/* roulang page: index */
:root {
            --bg-deep: #07111F;
            --bg-panel: #0C192A;
            --bg-card: #0F2033;
            --brand: #19A7CE;
            --brand-light: #67E8F9;
            --accent: #F4B942;
            --text-main: #E6EEF7;
            --text-secondary: #9FB3C8;
            --text-weak: #6D8299;
            --border: rgba(255, 255, 255, .08);
            --border-light: rgba(255, 255, 255, .12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-soft: 0 8px 30px rgba(2, 8, 20, .25);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4 {
            margin: 0;
            line-height: 1.25;
            letter-spacing: .01em;
        }

        p {
            margin: 0;
        }

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 17, 31, .72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(7, 17, 31, .9);
            border-bottom-color: rgba(255, 255, 255, .07);
            box-shadow: 0 8px 30px rgba(2, 8, 20, .25);
        }

        .topline {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.25rem;
            padding-top: .9rem;
            padding-bottom: .6rem;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: .75rem;
            min-width: 0;
        }

        .brand-badge {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(25, 167, 206, .18), rgba(25, 167, 206, .5));
            border: 1px solid rgba(103, 232, 249, .3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: #67E8F9;
            letter-spacing: 0;
        }

        .brand-text {
            font-size: 1.18rem;
            font-weight: 800;
            letter-spacing: .02em;
            white-space: nowrap;
            background: linear-gradient(90deg, #E6EEF7 0%, #67E8F9 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .topline-actions {
            display: flex;
            align-items: center;
            gap: .75rem;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: .6rem;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: 999px;
            padding: .45rem .9rem;
            width: 210px;
        }

        .search-box svg {
            width: 15px;
            height: 15px;
            color: var(--text-secondary);
            flex: 0 0 auto;
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            font-size: .82rem;
            width: 100%;
            color: var(--text-main);
        }

        .search-box input::placeholder {
            color: var(--text-weak);
        }

        .menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .05);
            color: var(--text-main);
        }

        .menu-toggle svg {
            width: 20px;
            height: 20px;
        }

        .main-nav-line {
            border-top: 1px solid rgba(255, 255, 255, .05);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: .25rem;
            overflow-x: auto;
            scrollbar-width: none;
            padding-top: .3rem;
            padding-bottom: .3rem;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            position: relative;
            padding: .6rem .8rem;
            font-size: .95rem;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
            transition: color .2s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
        }

        .nav-link.active {
            color: #67E8F9;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: .8rem;
            right: .8rem;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #19A7CE, #67E8F9);
            box-shadow: 0 0 8px rgba(25, 167, 206, .6);
        }

        .nav-hot {
            display: flex;
            align-items: center;
            gap: .35rem;
            margin-left: auto;
            font-size: .75rem;
            color: var(--text-weak);
            white-space: nowrap;
        }

        .nav-hot span {
            border: 1px solid rgba(255, 255, 255, .08);
            padding: .18rem .6rem;
            border-radius: 999px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, .03);
            font-weight: 500;
        }

        /* hero */
        .hero {
            position: relative;
            overflow: hidden;
            background-image: linear-gradient(rgba(7, 17, 31, .82), rgba(7, 17, 31, .88)), url(/assets/images/backpic/back-1.png);
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }

        .hero:before {
            content: "";
            position: absolute;
            inline-size: 480px;
            block-size: 480px;
            border-radius: 50%;
            background: rgba(25, 167, 206, .16);
            filter: blur(90px);
            top: -160px;
            right: -80px;
            pointer-events: none;
        }

        .hero:after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: radial-gradient(ellipse at center, black, transparent 75%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr);
            gap: 2.5rem;
            align-items: center;
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .8rem;
            letter-spacing: .12em;
            color: #67E8F9;
            background: rgba(25, 167, 206, .1);
            border: 1px solid rgba(25, 167, 206, .2);
            border-radius: 999px;
            padding: .3rem .85rem;
            text-transform: uppercase;
        }

        .hero-title {
            margin-top: 1.2rem;
            font-size: clamp(2rem, 4.6vw, 3.4rem);
            line-height: 1.18;
            font-weight: 800;
            color: #F2F8FD;
            letter-spacing: .01em;
        }

        .hero-title .txt-brand {
            background: linear-gradient(90deg, #67E8F9 0%, #19A7CE 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            margin-top: 1.2rem;
            max-width: 620px;
            color: #B9CBDD;
            font-size: 1.02rem;
            line-height: 1.9;
        }

        .hero-meta-points {
            margin-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: .75rem;
        }

        .hero-meta-points li {
            list-style: none;
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, .08);
            background: rgba(255, 255, 255, .03);
            border-radius: 999px;
            padding: .35rem .9rem;
        }

        .hero-meta-points li svg {
            width: 14px;
            height: 14px;
            color: #67E8F9;
            flex: none;
        }

        .hero-actions {
            margin-top: 2.2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border-radius: 12px;
            min-height: 48px;
            padding: .6rem 1.6rem;
            font-size: .96rem;
            font-weight: 600;
            letter-spacing: .02em;
            transition: all .25s ease;
            border: 1px solid transparent;
            outline: none;
        }

        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 2px solid rgba(103, 232, 249, .5);
            outline-offset: 2px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #19A7CE 0%, #0B63C5 100%);
            color: #fff;
            box-shadow: 0 0 0 rgba(25, 167, 206, 0);
        }

        .btn-primary:hover {
            box-shadow: 0 0 20px rgba(25, 167, 206, .35);
            transform: translateY(-1px);
            filter: brightness(1.08);
        }

        .btn-primary:active {
            transform: translateY(1px) scale(.99);
        }

        .btn-glass {
            background: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02));
            border-color: rgba(255, 255, 255, .12);
            color: var(--text-main);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
        }

        .btn-glass:hover {
            border-color: rgba(103, 232, 249, .35);
            color: #67E8F9;
            background: rgba(25, 167, 206, .08);
            transform: translateY(-1px);
        }

        .btn-arrow svg {
            width: 16px;
            height: 16px;
            transition: transform .2s ease;
        }

        .btn-primary:hover .btn-arrow svg {
            transform: translateX(4px);
        }

        .quick-panel {
            border-radius: 24px;
            padding: 1.4rem;
            background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
            border: 1px solid rgba(255, 255, 255, .1);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 12px 40px rgba(2, 8, 20, .2);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .quick-panel-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .75rem;
            margin-bottom: 1rem;
        }

        .quick-panel-title {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .quick-panel-tag {
            font-size: .75rem;
            color: #67E8F9;
            background: rgba(25, 167, 206, .14);
            border: 1px solid rgba(25, 167, 206, .25);
            border-radius: 999px;
            padding: .14rem .55rem;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: .8rem;
        }

        .quick-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            padding: .85rem .8rem;
            display: flex;
            align-items: center;
            gap: .6rem;
            transition: all .2s ease;
            color: var(--text-secondary);
            font-size: .84rem;
        }

        .quick-item:hover {
            background: rgba(25, 167, 206, .1);
            border-color: rgba(25, 167, 206, .3);
            transform: translateY(-2px);
        }

        .quick-item .q-i {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(25, 167, 206, .12);
            border: 1px solid rgba(25, 167, 206, .2);
            color: #67E8F9;
        }

        .quick-item svg {
            width: 17px;
            height: 17px;
        }

        /* metrics strip */
        .metrics-strip {
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            background: #0A1726;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        .metric-cell {
            padding: 1.8rem 1rem;
            text-align: left;
            position: relative;
        }

        .metric-cell + .metric-cell {
            border-left: 1px solid rgba(255, 255, 255, .05);
        }

        .metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: #67E8F9;
            line-height: 1.15;
            letter-spacing: -.02em;
            font-variant-numeric: tabular-nums;
        }

        .metric-name {
            margin-top: .2rem;
            font-weight: 600;
            color: var(--text-main);
            font-size: .95rem;
        }

        .metric-desc {
            margin-top: .5rem;
            color: var(--text-weak);
            font-size: .82rem;
            line-height: 1.65;
        }

        /* section */
        .section {
            position: relative;
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .section-hidden {
            overflow: hidden;
        }

        .section-head {
            max-width: 860px;
            margin-bottom: 2.5rem;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: .78rem;
            letter-spacing: .14em;
            text-transform: uppercase;
            color: #67E8F9;
            margin-bottom: .6rem;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.55rem, 3vw, 2.2rem);
            line-height: 1.3;
            font-weight: 700;
        }

        .section-sub {
            margin-top: .75rem;
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* steps */
        .steps-wrap {
            margin-top: 2rem;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            position: relative;
            counter-reset: stepCount;
        }

        .step-block {
            position: relative;
            padding: 1.75rem 1.6rem;
            background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 20px;
            transition: transform .25s ease, border-color .25s ease;
            counter-increment: stepCount;
        }

        .step-block:hover {
            transform: translateY(-3px);
            border-color: rgba(25, 167, 206, .3);
        }

        .step-block:not(:first-child) {
            margin-left: -1px;
        }

        .step-number {
            display: flex;
            align-items: center;
            gap: .75rem;
            margin-bottom: 1rem;
        }

        .step-num {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(25, 167, 206, .18), rgba(11, 99, 197, .18));
            border: 1px solid rgba(103, 232, 249, .25);
            color: #67E8F9;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1);
        }

        .step-line {
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, rgba(103, 232, 249, .4), rgba(255, 255, 255, .05));
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .55rem;
        }

        .step-desc {
            color: var(--text-secondary);
            font-size: .9rem;
            line-height: 1.8;
        }

        .step-desc + .step-desc {
            margin-top: .6rem;
            border-top: 1px dashed rgba(255, 255, 255, .08);
            padding-top: .6rem;
        }

        .step-tag-list {
            list-style: none;
            margin: .85rem 0 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: .45rem;
        }

        .step-tag-list li {
            font-size: .75rem;
            border: 1px solid rgba(255, 255, 255, .1);
            padding: .1rem .6rem;
            border-radius: 999px;
            color: var(--text-secondary);
        }

        /* cards utility */
        .card-panel {
            background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .01));
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 20px;
            padding: 1.5rem;
            transition: border-color .2s ease, transform .25s ease;
        }

        .card-panel:hover {
            border-color: rgba(25, 167, 206, .3);
        }

        /* channel info cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 2rem;
        }

        .feature-card {
            border-radius: 20px;
            padding: 1.5rem 1.35rem;
            background: #0D1B2D;
            border: 1px solid rgba(255, 255, 255, .06);
            position: relative;
            overflow: hidden;
            transition: all .25s ease;
        }

        .feature-card::after {
            content: "";
            position: absolute;
            right: -32px;
            top: -32px;
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(25, 167, 206, .12), transparent 70%);
            pointer-events: none;
        }

        .feature-card:hover {
            transform: translateY(-3px);
            border-color: rgba(25, 167, 206, .25);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(25, 167, 206, .1);
            border: 1px solid rgba(25, 167, 206, .2);
            color: #67E8F9;
            margin-bottom: 1rem;
        }

        .feature-icon svg {
            width: 20px;
            height: 20px;
        }

        .feature-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: .5rem;
        }

        .feature-desc {
            font-size: .85rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .feature-link {
            margin-top: .9rem;
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .82rem;
            color: #67E8F9;
            font-weight: 500;
        }

        .feature-link svg {
            width: 14px;
            height: 14px;
        }

        /* news info list */
        .news-section {
            background: radial-gradient(circle at 90% 10%, rgba(25, 167, 206, .07), transparent 30%), linear-gradient(180deg, #081523 0%, #0C192A 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.4rem;
        }

        .news-card {
            border-radius: 20px;
            background: #0D1B2C;
            border: 1px solid rgba(255, 255, 255, .07);
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            transition: all .25s ease;
            min-height: 250px;
        }

        .news-card:hover {
            transform: translateY(-3px);
            border-color: rgba(103, 232, 249, .35);
            box-shadow: 0 10px 30px rgba(2, 8, 20, .35);
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .75rem;
            font-size: .78rem;
            color: var(--text-weak);
            margin-bottom: 1.1rem;
        }

        .cat-tag {
            font-size: .78rem;
            border: 1px solid rgba(103, 232, 249, .35);
            color: #67E8F9;
            border-radius: 999px;
            padding: .12rem .7rem;
            background: rgba(25, 167, 206, .06);
            white-space: nowrap;
        }

        .news-card h3 {
            font-size: 1.06rem;
            font-weight: 700;
            line-height: 1.65;
            margin-bottom: .75rem;
            color: #EAF3FB;
        }

        .news-desc {
            font-size: .88rem;
            line-height: 1.75;
            color: var(--text-secondary);
            margin-bottom: 1.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .75rem;
            font-size: .78rem;
            color: var(--text-weak);
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            color: #67E8F9;
            font-weight: 500;
            transition: gap .2s ease;
        }

        .news-more:hover {
            gap: .5rem;
        }

        .news-more svg {
            width: 13px;
            height: 13px;
        }

        .news-empty {
            grid-column: 1 / -1;
            padding: 2.8rem 1.5rem;
            text-align: center;
            border-radius: 20px;
            border: 1px dashed rgba(103, 232, 249, .35);
            color: var(--text-secondary);
            font-size: .95rem;
            background: rgba(25, 167, 206, .03);
        }

        .news-view-all {
            margin-top: 2rem;
            text-align: center;
        }

        /* scene area */
        .scene-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }

        .scene-media {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .08);
            aspect-ratio: 4 / 3;
        }

        .scene-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scene-media:after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 17, 31, .06) 0%, rgba(7, 17, 31, .72) 100%);
        }

        .scene-caption {
            position: absolute;
            z-index: 2;
            left: 1.5rem;
            right: 1.5rem;
            bottom: 1.5rem;
        }

        .scene-caption strong {
            display: block;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: .25rem;
        }

        .scene-caption span {
            color: #C5D6E8;
            font-size: .85rem;
        }

        .scene-list {
            margin-top: .5rem;
            list-style: none;
            padding: 0;
            display: grid;
            gap: 1rem;
        }

        .scene-item {
            display: flex;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            align-items: flex-start;
        }

        .scene-item-num {
            color: #67E8F9;
            font-weight: 800;
            font-size: .9rem;
            font-variant-numeric: tabular-nums;
            width: 34px;
            flex: 0 0 auto;
            height: 32px;
            border: 1px solid rgba(103, 232, 249, .2);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(103, 232, 249, .04);
        }

        .scene-item h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 .3rem;
        }

        .scene-item p {
            font-size: .86rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* faq */
        .faq-section {
            background: #0A1524;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 2.2rem;
        }

        .faq-side {
            position: sticky;
            top: 140px;
            align-self: start;
        }

        .faq-head {
            margin-bottom: 1rem;
        }

        .faq-head .section-eyebrow {
            color: var(--accent);
        }

        .faq-help {
            padding: 1.1rem 1.2rem;
            border-radius: 20px;
            background: rgba(244, 185, 66, .06);
            border: 1px solid rgba(244, 185, 66, .16);
            font-size: .9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-top: 1rem;
        }

        .faq-list {
            display: grid;
            gap: 1rem;
        }

        .faq-item {
            border-radius: 18px;
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item:hover {
            border-color: rgba(103, 232, 249, .14);
        }

        .faq-item[data-open="true"] {
            border-color: rgba(103, 232, 249, .25);
        }

        .faq-q {
            display: flex;
            align-items: center;
            gap: .9rem;
            width: 100%;
            text-align: left;
            background: transparent;
            border: 0;
            padding: 1.2rem 1.3rem;
            color: var(--text-main);
            font-size: .98rem;
            font-weight: 600;
        }

        .faq-q .q-mark {
            width: 24px;
            height: 24px;
            flex: 0 0 auto;
            border-radius: 8px;
            background: rgba(25, 167, 206, .13);
            border: 1px solid rgba(25, 167, 206, .25);
            color: #67E8F9;
            font-size: .82rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .faq-chevron {
            margin-left: auto;
            width: 18px;
            height: 18px;
            color: var(--text-weak);
            flex: 0 0 auto;
            transition: transform .25s ease;
        }

        .faq-item[data-open="true"] .faq-chevron {
            transform: rotate(180deg);
            color: #67E8F9;
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-a-inner {
            padding: 0 1.3rem 1.2rem 3rem;
            color: var(--text-secondary);
            font-size: .9rem;
            line-height: 1.85;
        }

        /* CTA */
        .cta-band {
            position: relative;
            overflow: hidden;
            background-image: linear-gradient(rgba(7, 17, 31, .82), rgba(7, 17, 31, .9)), url(/assets/images/backpic/back-2.png);
            background-size: cover;
            background-position: center;
        }

        .cta-band:before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(25, 167, 206, .2);
            filter: blur(100px);
            top: -80px;
            left: 20%;
        }

        .cta-box {
            position: relative;
            z-index: 2;
            border-radius: 28px;
            padding: clamp(2rem, 5vw, 4rem);
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 2rem;
            align-items: center;
            background: rgba(13, 22, 36, .55);
            border: 1px solid rgba(255, 255, 255, .12);
            backdrop-filter: blur(10px);
        }

        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.28;
        }

        .cta-actions {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: .8rem;
        }

        .cta-note {
            color: var(--text-weak);
            font-size: .8rem;
        }

        /* continue bar */
        .more-strip {
            background: #091626;
            border-top: 1px solid rgba(255, 255, 255, .06);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .site-footer {
            background: #06101C;
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-bottom: 1.8rem;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr 1fr;
            gap: 2rem;
            padding: 3rem 0 2rem;
        }

        .footer-brandtext {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: .02em;
            background: linear-gradient(90deg, #EAF3FB, #67E8F9);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-desc {
            color: var(--text-secondary);
            margin-top: .8rem;
            font-size: .88rem;
            line-height: 1.85;
        }

        .footer-tags {
            margin-top: 1.2rem;
            display: flex;
            flex-wrap: wrap;
            gap: .45rem;
        }

        .footer-tags span {
            font-size: .76rem;
            border: 1px solid rgba(255, 255, 255, .08);
            padding: .12rem .65rem;
            border-radius: 999px;
            color: var(--text-weak);
        }

        .footer-title {
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: .8rem;
            color: #E4EEF9;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: .6rem;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: .86rem;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: #67E8F9;
        }

        .footer-contact p {
            color: var(--text-secondary);
            font-size: .84rem;
            margin-bottom: .5rem;
            display: flex;
            gap: .5rem;
            align-items: center;
        }

        .footer-contact svg {
            width: 15px;
            height: 15px;
            flex: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            color: var(--text-weak);
            font-size: .82rem;
        }

        /* mobile drawer */
        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 80;
            background: rgba(4, 10, 18, .82);
            backdrop-filter: blur(10px);
            display: flex;
            transition: opacity .3s ease;
            overflow-y: auto;
        }

        .mobile-drawer.closed {
            opacity: 0;
            pointer-events: none;
        }

        .drawer-panel {
            width: min(380px, 92%);
            margin-left: auto;
            background: #0A1625;
            border-left: 1px solid rgba(255, 255, 255, .1);
            min-height: 100%;
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: .8rem;
        }

        .drawer-panel a {
            padding: .9rem .8rem;
            border-radius: 16px;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 500;
            border: 1px solid transparent;
        }

        .drawer-panel a:hover,
        .drawer-panel a.active {
            background: rgba(25, 167, 206, .1);
            border-color: rgba(25, 167, 206, .2);
            color: #67E8F9;
        }

        .drawer-close {
            margin-bottom: .6rem;
            align-self: flex-end;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, .12);
            background: rgba(255, 255, 255, .05);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .drawer-close svg {
            width: 20px;
            height: 20px;
        }

        .drawer-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: .7rem;
        }

        .drawer-note {
            margin-top: 1rem;
            font-size: .8rem;
            color: var(--text-weak);
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 1rem;
            line-height: 1.75;
        }

        /* responsive */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-inner {
                grid-template-columns: 1fr;
                padding-top: 3.5rem;
            }

            .quick-panel {
                max-width: 100%;
            }

            .footer-top {
                grid-template-columns: repeat(2, 1fr);
                gap: 2rem;
            }

            .scene-wrap {
                grid-template-columns: 1fr;
            }

            .faq-grid {
                grid-template-columns: 1fr;
            }

            .faq-side {
                position: static;
            }

            .cta-box {
                grid-template-columns: 1fr;
                text-align: left;
            }

            .cta-actions {
                flex-direction: row;
                flex-wrap: wrap;
                align-items: center;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .topline {
                padding-top: .6rem;
                padding-bottom: .45rem;
            }

            .search-box {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .main-nav-line {
                display: none;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .metric-cell:nth-child(2n + 1) {
                border-left: 0;
            }

            .metric-cell:nth-child(n + 3) {
                border-top: 1px solid rgba(255, 255, 255, .05);
            }

            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .step-block:not(:first-child) {
                margin-left: 0;
            }

            .news-grid,
            .features-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding-top: 3.2rem;
                padding-bottom: 3.2rem;
            }

            .hero-inner {
                padding-top: 3rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
            }

            .hero-desc {
                font-size: .94rem;
            }

            .footer-top {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 420px) {
            .quick-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: .5rem;
            }

            .quick-item {
                padding: .65rem;
                font-size: .8rem;
                gap: .35rem;
            }

            .brand-text {
                font-size: 1rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .metric-cell {
                border-left: 0 !important;
                border-top: 1px solid rgba(255, 255, 255, .05);
            }
        }

/* roulang page: category1 */
:root {
        --bg-deep: #07111F;
        --bg-sub: #0C192A;
        --bg-card: #102134;
        --accent: #19A7CE;
        --accent-light: #67E8F9;
        --accent-deep: #0B63C5;
        --amber: #F4B942;
        --text-main: #E6EEF7;
        --text-sub: #9FB3C8;
        --text-dim: #6D8299;
        --border: rgba(255, 255, 255, 0.08);
        --border-light: rgba(255, 255, 255, 0.14);
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-card: 0 8px 30px rgba(2, 8, 20, 0.25);
    }
    * {
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        margin: 0;
        background: var(--bg-deep);
        color: var(--text-main);
        font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: inherit;
        text-decoration: none;
    }
    button,
    input {
        font-family: inherit;
        font-size: inherit;
    }
    ul,
    ol {
        margin: 0;
        padding: 0;
        list-style: none;
    }
    h1,
    h2,
    h3,
    h4,
    p {
        margin: 0;
        padding: 0;
    }
    .container {
        width: 100%;
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (min-width: 768px) {
        .container {
            padding: 0 32px;
        }
    }

    /* Header & nav */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 120;
        width: 100%;
        background: rgba(7, 17, 31, 0.82);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        transition: background .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled {
        background: rgba(7, 17, 31, 0.94);
        box-shadow: 0 10px 36px rgba(2, 8, 20, 0.35);
    }
    .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 72px;
        gap: 20px;
    }
    .brand-logo {
        display: inline-flex;
        align-items: baseline;
        flex-shrink: 0;
        font-size: 22px;
        font-weight: 800;
        letter-spacing: 0.02em;
        color: var(--text-main);
    }
    .brand-logo .brand-core {
        color: var(--accent-light);
    }
    .brand-logo small {
        display: block;
        font-size: 11px;
        font-weight: 500;
        letter-spacing: 0.14em;
        color: var(--text-dim);
        margin-left: 10px;
    }
    .header-search {
        display: none;
        align-items: center;
        flex: 1;
        max-width: 360px;
    }
    .header-search form {
        display: flex;
        align-items: center;
        width: 100%;
        height: 42px;
        background: rgba(12, 25, 42, 0.8);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 0 6px 0 14px;
        transition: border-color .2s ease, box-shadow .2s ease;
    }
    .header-search form:focus-within {
        border-color: rgba(25, 167, 206, 0.6);
        box-shadow: 0 0 0 3px rgba(25, 167, 206, 0.12);
    }
    .header-search input {
        width: 100%;
        background: transparent;
        border: 0;
        outline: none;
        color: var(--text-main);
        font-size: 14px;
    }
    .header-search input::placeholder {
        color: var(--text-dim);
    }
    .header-search button {
        height: 30px;
        padding: 0 12px;
        border: 0;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.06);
        color: var(--text-sub);
        font-size: 13px;
        cursor: pointer;
        transition: background .2s ease;
    }
    .header-search button:hover {
        background: rgba(255, 255, 255, 0.12);
        color: var(--text-main);
    }
    @media (min-width: 768px) {
        .header-search {
            display: flex;
        }
    }
    .menu-label {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border: 1px solid var(--border-light);
        border-radius: 11px;
        background: rgba(255, 255, 255, 0.04);
        cursor: pointer;
        transition: all .2s ease;
    }
    .menu-label:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.2);
    }
    .menu-label svg {
        width: 20px;
        height: 20px;
        stroke: var(--text-main);
    }
    @media (min-width: 1024px) {
        .menu-label {
            display: none;
        }
    }

    .nav-bar {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        min-height: 52px;
        display: flex;
        align-items: center;
    }
    .main-nav {
        display: none;
        align-items: center;
        flex-wrap: wrap;
        gap: 4px;
        width: 100%;
    }
    @media (min-width: 1024px) {
        .main-nav {
            display: flex;
        }
    }
    .nav-link {
        display: inline-flex;
        align-items: center;
        height: 38px;
        padding: 0 14px;
        margin: 6px 2px;
        border-radius: 9px;
        color: var(--text-sub);
        font-size: 15px;
        font-weight: 500;
        transition: all .2s ease;
    }
    .nav-link:hover {
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.05);
    }
    .nav-link.active {
        color: var(--accent-light);
        background: rgba(25, 167, 206, 0.12);
        box-shadow: inset 0 0 0 1px rgba(25, 167, 206, 0.18);
    }
    .nav-hot {
        display: none;
        align-items: center;
        gap: 6px;
        margin-left: auto;
    }
    .nav-hot span {
        font-size: 12px;
        line-height: 24px;
        padding: 0 10px;
        color: var(--text-dim);
        border: 1px solid var(--border);
        border-radius: 999px;
        white-space: nowrap;
    }
    @media (min-width: 1100px) {
        .nav-hot {
            display: flex;
        }
    }

    .input-nav-toggle {
        position: absolute;
        opacity: 0;
        pointer-events: none;
    }
    .drawer-backdrop {
        position: fixed;
        inset: 0;
        z-index: 600;
        background: rgba(2, 8, 20, 0.72);
        backdrop-filter: blur(3px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .3s ease;
    }
    .mobile-drawer {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 610;
        width: min(86vw, 368px);
        background: var(--bg-sub);
        border-left: 1px solid var(--border-light);
        padding: 28px 24px 40px;
        transform: translateX(100%);
        transition: transform .35s cubic-bezier(.22, 1, .36, 1);
        overflow-y: auto;
    }
    .drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 26px;
        padding-bottom: 18px;
        border-bottom: 1px solid var(--border);
    }
    .drawer-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--accent-light);
    }
    .drawer-close {
        display: inline-flex;
        width: 34px;
        height: 34px;
        border: 1px solid var(--border-light);
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.05);
        cursor: pointer;
        align-items: center;
        justify-content: center;
        color: var(--text-sub);
    }
    .drawer-menu li + li {
        margin-top: 4px;
    }
    .drawer-menu a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 14px;
        border-radius: 12px;
        color: var(--text-sub);
        font-size: 16px;
        transition: all .2s ease;
        border: 1px solid transparent;
    }
    .drawer-menu a:hover,
    .drawer-menu a.active {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.08);
        color: var(--text-main);
    }
    .drawer-menu a.active {
        color: var(--accent-light);
    }
    .drawer-search {
        margin: 24px 0;
    }
    .drawer-search input {
        width: 100%;
        height: 46px;
        padding: 0 14px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: rgba(7, 17, 31, 0.7);
        color: var(--text-main);
        outline: none;
    }
    .drawer-search input:focus {
        border-color: var(--accent);
    }
    .input-nav-toggle:checked ~ .drawer-backdrop {
        opacity: 1;
        pointer-events: auto;
    }
    .input-nav-toggle:checked ~ .mobile-drawer {
        transform: translateX(0);
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 44px;
        padding: 0 24px;
        border-radius: var(--radius-md);
        font-size: 15px;
        font-weight: 600;
        white-space: nowrap;
        cursor: pointer;
        border: 1px solid transparent;
        transition: all .25s ease;
        gap: 8px;
    }
    .btn svg {
        width: 16px;
        height: 16px;
        transition: transform .2s ease;
    }
    .btn-primary {
        background: linear-gradient(135deg, #19A7CE 0%, #0B63C5 100%);
        color: #fff;
        box-shadow: 0 10px 26px rgba(25, 167, 206, 0.22);
    }
    .btn-primary:hover {
        filter: brightness(1.12);
        box-shadow: 0 0 22px rgba(25, 167, 206, 0.38);
    }
    .btn-primary:hover svg {
        transform: translateX(3px);
    }
    .btn-primary:active {
        transform: translateY(1px);
        box-shadow: none;
    }
    .btn-ghost {
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
        border-color: rgba(255, 255, 255, 0.14);
        color: var(--text-main);
    }
    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.28);
        box-shadow: inset 0 0 16px rgba(255, 255, 255, 0.04);
    }
    .btn-amber {
        background: linear-gradient(135deg, #F4B942, #e6991a);
        color: #0B1B29;
        box-shadow: 0 10px 28px rgba(244, 185, 66, 0.16);
    }
    .btn-amber:hover {
        filter: brightness(1.08);
        box-shadow: 0 0 20px rgba(244, 185, 66, 0.28);
    }
    .btn:focus-visible,
    .nav-link:focus-visible,
    a:focus-visible {
        outline: 2px solid var(--accent-light);
        outline-offset: 2px;
    }

    .glass-panel {
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)), rgba(16, 33, 52, 0.6);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), var(--shadow-card);
        border-radius: var(--radius-lg);
    }

    /* Crumb bar */
    .crumb-bar {
        display: flex;
        align-items: center;
        gap: 8px;
        padding-top: 18px;
        padding-bottom: 6px;
        font-size: 13px;
        color: var(--text-dim);
    }
    .crumb-bar a {
        color: var(--text-sub);
        transition: color .2s ease;
    }
    .crumb-bar a:hover {
        color: var(--accent-light);
    }
    .crumb-sep {
        color: rgba(255, 255, 255, 0.2);
    }

    /* category hero */
    .cat-hero {
        position: relative;
        border-radius: 24px;
        margin-top: 16px;
        margin-bottom: 34px;
        overflow: hidden;
        padding: 44px 32px 40px;
        display: grid;
        gap: 34px;
        align-items: center;
        background:
            radial-gradient(800px 300px at 10% -10%, rgba(25, 167, 206, 0.18), transparent 60%),
            linear-gradient(115deg, rgba(7, 17, 31, 0.95) 0%, rgba(9, 24, 40, 0.84) 50%, rgba(11, 35, 52, 0.92) 100%),
            url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        border: 1px solid var(--border);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), var(--shadow-card);
    }
    .cat-hero .deco-ring {
        position: absolute;
        width: 420px;
        height: 420px;
        right: -110px;
        top: -170px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(103, 232, 249, 0.08) 0%, transparent 62%);
        pointer-events: none;
    }
    .cat-hero .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        letter-spacing: 0.08em;
        color: var(--accent-light);
        background: rgba(25, 167, 206, 0.12);
        border: 1px solid rgba(25, 167, 206, 0.22);
        border-radius: 999px;
        padding: 4px 12px;
        margin-bottom: 22px;
    }
    .cat-hero h1 {
        max-width: 680px;
        font-size: clamp(30px, 5.2vw, 46px);
        line-height: 1.18;
        letter-spacing: -0.01em;
        font-weight: 800;
        color: #fff;
    }
    .cat-hero .lead {
        max-width: 620px;
        color: var(--text-sub);
        font-size: 16px;
        margin: 18px 0 24px;
    }
    .cat-hero .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }
    .hero-quick-panel {
        padding: 22px;
        border-radius: 20px;
        max-width: 420px;
    }
    .hero-quick-panel h2 {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 14px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .hero-quick-panel h2 span {
        display: inline-flex;
        width: 22px;
        height: 22px;
        align-items: center;
        justify-content: center;
        background: rgba(25, 167, 206, 0.2);
        color: var(--accent-light);
        border-radius: 7px;
        font-size: 13px;
    }
    .quick-line {
        display: flex;
        gap: 10px;
        padding: 10px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
    }
    .quick-line:first-of-type {
        border-top: 0;
    }
    .quick-line svg {
        flex: 0 0 auto;
        width: 17px;
        height: 17px;
        margin-top: 3px;
        color: var(--accent);
    }
    @media (min-width: 1024px) {
        .cat-hero {
            grid-template-columns: 1fr minmax(320px, 420px);
            padding: 58px 48px;
        }
    }

    /* generic section */
    .section {
        padding-top: 52px;
        padding-bottom: 52px;
    }
    @media (min-width: 768px) {
        .section {
            padding-top: 68px;
            padding-bottom: 68px;
        }
    }
    .section-head {
        max-width: 760px;
        margin-bottom: 34px;
    }
    .section-head .kicker {
        color: var(--accent-light);
        font-size: 13px;
        letter-spacing: 0.06em;
        font-weight: 600;
        margin-bottom: 6px;
    }
    .section-head h2 {
        font-size: 28px;
        line-height: 1.25;
        font-weight: 800;
        color: #fff;
        letter-spacing: -0.01em;
    }
    .section-head p {
        color: var(--text-sub);
        margin-top: 12px;
        font-size: 15px;
    }

    /* editorial split */
    .editorial-grid {
        display: grid;
        gap: 32px;
        align-items: start;
    }
    @media (min-width: 1024px) {
        .editorial-grid {
            grid-template-columns: minmax(0, 1fr) 332px;
        }
    }
    .guide-article {
        background: linear-gradient(180deg, rgba(12, 25, 42, 0.7), rgba(10, 21, 36, 0.94));
        border: 1px solid var(--border);
        border-radius: 24px;
        overflow: hidden;
    }
    .guide-article .art-cover {
        position: relative;
        aspect-ratio: 16/7;
        overflow: hidden;
    }
    .guide-article .art-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .guide-article .art-cover::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 35%, rgba(10, 21, 36, 0.7) 100%);
    }
    .art-body {
        padding: 30px 24px;
    }
    @media (min-width: 768px) {
        .art-body {
            padding: 38px 42px;
        }
    }
    .art-body h2 {
        font-size: 26px;
        line-height: 1.3;
        font-weight: 800;
        color: #fff;
        margin: 20px 0 14px;
    }
    .art-body h3 {
        font-size: 19px;
        font-weight: 700;
        color: var(--text-main);
        margin-top: 26px;
        margin-bottom: 10px;
    }
    .art-body p {
        color: var(--text-sub);
        margin-bottom: 14px;
        font-size: 15px;
        line-height: 1.85;
    }
    .art-body p strong {
        color: var(--text-main);
        font-weight: 600;
    }

    .guide-note-cards {
        display: grid;
        gap: 12px;
        margin: 18px 0 8px;
    }
    @media (min-width: 640px) {
        .guide-note-cards {
            grid-template-columns: repeat(3, 1fr);
        }
    }
    .guide-note-card {
        padding: 16px;
        background: rgba(255, 255, 255, 0.035);
        border: 1px solid var(--border);
        border-radius: 16px;
    }
    .guide-note-card .icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 10px;
        background: rgba(25, 167, 206, 0.1);
        margin-bottom: 10px;
    }
    .guide-note-card .icon svg {
        width: 18px;
        height: 18px;
        color: var(--accent-light);
    }
    .guide-note-card strong {
        display: block;
        font-size: 14px;
        color: var(--text-main);
        margin-bottom: 4px;
    }
    .guide-note-card span {
        font-size: 13px;
        color: var(--text-dim);
        line-height: 1.6;
    }

    .prep-list {
        display: grid;
        gap: 10px;
        margin-top: 12px;
    }
    .prep-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 14px 16px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 14px;
        font-size: 14px;
        color: var(--text-sub);
    }
    .prep-list svg {
        flex: 0 0 auto;
        width: 18px;
        height: 18px;
        margin-top: 3px;
        color: var(--accent-light);
    }

    .steps-list {
        margin: 18px 0 6px;
        counter-reset: step;
    }
    .step-item {
        display: grid;
        grid-template-columns: 40px 1fr;
        gap: 16px;
        padding: 18px 0;
        border-bottom: 1px solid var(--border);
    }
    .step-item:last-child {
        border-bottom: 0;
    }
    .step-num {
        width: 40px;
        height: 40px;
        border-radius: 13px;
        background: linear-gradient(135deg, rgba(25, 167, 206, 0.2), rgba(11, 99, 197, 0.15));
        border: 1px solid rgba(25, 167, 206, 0.25);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-light);
        font-weight: 800;
        font-size: 16px;
        font-variant-numeric: tabular-nums;
    }
    .step-txt h4 {
        color: var(--text-main);
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 4px;
    }
    .step-txt p {
        font-size: 14px;
        color: var(--text-sub);
        margin: 0;
    }
    .step-tip {
        margin-top: 8px;
        background: rgba(244, 185, 66, 0.06);
        border-left: 2px solid rgba(244, 185, 66, 0.4);
        border-radius: 0 8px 8px 0;
        padding: 7px 12px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.72);
    }

    .warn-block {
        display: flex;
        gap: 12px;
        padding: 16px 18px;
        border-radius: 14px;
        background: rgba(244, 185, 66, 0.05);
        border: 1px solid rgba(244, 185, 66, 0.25);
        align-items: flex-start;
        margin: 18px 0 4px;
    }
    .warn-block svg {
        flex: 0 0 auto;
        width: 18px;
        height: 18px;
        color: var(--amber);
        margin-top: 4px;
    }
    .warn-block p {
        color: var(--text-sub);
        font-size: 14px;
        margin: 0;
        line-height: 1.75;
    }

    /* aside rail */
    .rail-card + .rail-card {
        margin-top: 20px;
    }
    .rail-card {
        padding: 22px;
        border-radius: 20px;
    }
    .rail-card .rail-title {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 16px;
        color: #fff;
        font-size: 17px;
        font-weight: 700;
    }
    .rail-card .rail-title svg {
        width: 18px;
        height: 18px;
        color: var(--accent-light);
    }
    .rail-links li {
        margin-bottom: 4px;
    }
    .rail-links a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        padding: 12px 12px;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.025);
        border: 1px solid rgba(255, 255, 255, 0.05);
        color: var(--text-sub);
        transition: all .2s ease;
        font-size: 14px;
    }
    .rail-links a:hover {
        background: rgba(255, 255, 255, 0.07);
        border-color: rgba(255, 255, 255, 0.14);
        color: var(--text-main);
        transform: translateX(3px);
    }
    .rail-links a span {
        color: var(--text-dim);
        flex: 0 0 auto;
    }
    .rail-links a svg {
        width: 14px;
        height: 14px;
        color: var(--accent);
    }
    .mini-note {
        display: flex;
        gap: 10px;
        padding: 12px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        align-items: flex-start;
        font-size: 13px;
        color: var(--text-sub);
        line-height: 1.65;
    }
    .mini-note:last-child {
        border-bottom: 0;
    }
    .mini-note svg {
        flex: 0 0 auto;
        width: 16px;
        height: 16px;
        margin-top: 3px;
        color: var(--amber);
    }

    /* FAQ */
    .faq-cols {
        display: grid;
        gap: 22px;
    }
    @media (min-width: 992px) {
        .faq-cols {
            grid-template-columns: 300px 1fr;
        }
    }
    .faq-intro-card {
        align-self: start;
        padding: 24px;
        border-radius: 20px;
    }
    .faq-intro-card h2 {
        font-size: 23px;
        line-height: 1.3;
        font-weight: 800;
        color: #fff;
        margin-bottom: 10px;
    }
    .faq-intro-card p {
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 18px;
    }
    .faq-stack details {
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 15px;
        margin-bottom: 10px;
        overflow: hidden;
        transition: border-color .2s ease;
    }
    .faq-stack details[open] {
        background: rgba(255, 255, 255, 0.045);
        border-color: rgba(25, 167, 206, 0.3);
    }
    .faq-stack summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 16px 18px;
        cursor: pointer;
        list-style: none;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.5;
    }
    .faq-stack summary::-webkit-details-marker {
        display: none;
    }
    .faq-stack summary::after {
        content: "+";
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 22px;
        height: 22px;
        border-radius: 7px;
        background: rgba(25, 167, 206, 0.12);
        color: var(--accent-light);
        font-weight: 700;
        font-size: 18px;
        transition: transform .25s ease;
    }
    .faq-stack details[open] summary::after {
        transform: rotate(45deg);
    }
    .faq-stack details .answer {
        padding: 0 18px 16px 22px;
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.8;
    }

    /* CTA */
    .cta-band {
        position: relative;
        margin-top: 16px;
        border-radius: 26px;
        overflow: hidden;
        padding: 42px 28px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 28px;
        border: 1px solid rgba(255, 255, 255, 0.1);
        background:
            radial-gradient(700px 260px at 80% 30%, rgba(25, 167, 206, 0.18), transparent 60%),
            linear-gradient(120deg, rgba(12, 25, 42, 0.95), rgba(16, 33, 52, 0.82)),
            url('/assets/images/backpic/back-3.png') center/cover;
    }
    @media (min-width: 760px) {
        .cta-band {
            padding: 52px 48px;
        }
    }
    .cta-copy {
        max-width: 560px;
    }
    .cta-copy h2 {
        font-size: 26px;
        line-height: 1.3;
        color: #fff;
        font-weight: 800;
        margin-bottom: 10px;
    }
    .cta-copy p {
        color: var(--text-sub);
        line-height: 1.8;
        font-size: 15px;
    }
    .cta-actions {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
    }
    @media (max-width: 600px) {
        .cta-band {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    /* Footer */
    .site-footer {
        border-top: 1px solid rgba(255, 255, 255, 0.09);
        background: var(--bg-sub);
        margin-top: 72px;
        padding-top: 52px;
    }
    .site-footer .container {
        padding-bottom: 24px;
    }
    .footer-top {
        display: grid;
        grid-template-columns: 1fr;
        gap: 34px;
        padding-bottom: 32px;
    }
    @media (min-width: 768px) {
        .footer-top {
            grid-template-columns: 1.6fr 0.9fr 1fr 1.2fr;
        }
    }
    .footer-brandtext {
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        letter-spacing: 0.01em;
        margin-bottom: 8px;
    }
    .footer-brandtext .core {
        color: var(--accent-light);
    }
    .footer-desc {
        font-size: 13.5px;
        line-height: 1.8;
        color: var(--text-sub);
        margin: 10px 0 14px;
    }
    .footer-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .footer-tags span {
        font-size: 12px;
        line-height: 26px;
        padding: 0 10px;
        border-radius: 999px;
        color: var(--text-sub);
        border: 1px solid var(--border);
    }
    .footer-title {
        color: var(--text-main);
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 14px;
    }
    .footer-links li + li {
        margin-top: 8px;
    }
    .footer-links a {
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.55;
        transition: color .2s ease, padding-left .2s ease;
    }
    .footer-links a:hover {
        color: var(--accent-light);
        padding-left: 4px;
    }
    .footer-contact p {
        display: flex;
        align-items: flex-start;
        gap: 8px;
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 10px;
        line-height: 1.6;
    }
    .footer-contact svg {
        flex: 0 0 auto;
        width: 16px;
        height: 16px;
        margin-top: 4px;
        color: var(--text-dim);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.07);
        padding: 16px 0;
        color: var(--text-dim);
        font-size: 13px;
        display: flex;
        flex-direction: column;
        gap: 4px;
    }
    @media (min-width: 768px) {
        .footer-bottom {
            flex-direction: row;
            justify-content: space-between;
            align-items: center;
        }
    }

/* roulang page: article */
:root {
            --bg-deep: #07111F;
            --bg-panel: #0C192A;
            --bg-soft: #102134;
            --brand: #19A7CE;
            --brand-light: #67E8F9;
            --brand-deep: #0B63C5;
            --accent: #F4B942;
            --text-primary: #E6EEF7;
            --text-secondary: #9FB3C8;
            --text-muted: #6D8299;
            --line: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.12);
            --glass-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            --radius-xs: 6px;
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --shadow-card: 0 8px 30px rgba(2, 8, 20, 0.25);
            --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input {
            font: inherit;
            color: inherit;
        }

        button {
            border: 0;
            background: none;
            cursor: pointer;
        }

        :focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            width: min(1280px, 100% - 40px);
            margin-inline: auto;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 22px;
            border-radius: 14px;
            background: linear-gradient(135deg, #19A7CE, #0B63C5);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(25, 167, 206, 0.22);
            transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 0 26px rgba(25, 167, 206, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(25, 167, 206, 0.18);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 0 18px;
            border-radius: 12px;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #DCE8F5;
            font-size: 14px;
            font-weight: 500;
            transition: border-color .2s ease, background .2s ease, transform .2s ease;
        }

        .btn-ghost:hover {
            border-color: rgba(103, 232, 249, 0.4);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-1px);
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 17, 31, 0.66);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--line);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(7, 18, 31, 0.92);
            box-shadow: 0 12px 30px rgba(2, 8, 20, 0.25);
        }

        .header-top {
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            flex: none;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, #67E8F9, #0B63C5);
            border-radius: 10px;
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .04em;
            box-shadow: 0 0 18px rgba(25, 167, 206, 0.24);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: #F1F6FC;
            white-space: nowrap;
            letter-spacing: .01em;
        }

        .brand-name em {
            font-style: normal;
            color: var(--brand-light);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-search {
            width: 286px;
            height: 40px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            color: var(--text-secondary);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .header-search:hover,
        .header-search:focus-within {
            border-color: rgba(103, 232, 249, 0.38);
            box-shadow: 0 0 0 3px rgba(25, 167, 206, 0.08);
        }

        .header-search svg {
            width: 17px;
            height: 17px;
            flex: none;
        }

        .header-search input {
            width: 100%;
            border: 0;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
        }

        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            flex-direction: column;
            gap: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 19px;
            height: 2px;
            background: #cddcf0;
            border-radius: 2px;
        }

        .header-nav {
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .header-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 54px;
            gap: 20px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 14px;
            position: relative;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: color .2s ease, background .2s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: var(--brand-light);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 0;
            height: 2px;
            border-radius: 999px;
            background: var(--brand);
            box-shadow: 0 0 12px rgba(25, 167, 206, 0.6);
        }

        .nav-hot {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-hot span {
            font-size: 12px;
            color: var(--text-muted);
            padding: 5px 11px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            white-space: nowrap;
        }

        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 2000;
            background: rgba(4, 8, 16, 0.76);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            visibility: hidden;
            opacity: 0;
            transition: opacity .3s ease, visibility .3s ease;
        }

        .mobile-drawer.open {
            visibility: visible;
            opacity: 1;
        }

        .mobile-drawer-panel {
            position: absolute;
            top: 0;
            right: 0;
            height: 100%;
            width: min(88%, 380px);
            background: #0A1624;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 24px 40px;
            transform: translateX(20px);
            transition: transform .3s ease;
            overflow-y: auto;
        }

        .mobile-drawer.open .mobile-drawer-panel {
            transform: translateX(0);
        }

        .drawer-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .drawer-head .brand-name {
            font-size: 18px;
        }

        .drawer-close {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: grid;
            place-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
            font-size: 22px;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .drawer-nav a {
            display: block;
            padding: 13px 14px;
            border-radius: 12px;
            color: #D8E4F0;
            font-size: 15px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: border-color .2s ease, color .2s ease;
        }

        .drawer-nav a:hover,
        .drawer-nav a.active {
            color: var(--brand-light);
            border-color: rgba(25, 167, 206, 0.35);
        }

        .drawer-hot {
            margin-top: 22px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .drawer-hot span {
            font-size: 12px;
            color: var(--text-secondary);
            padding: 6px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.03);
        }

        /* article main */
        .article-main {
            background:
                radial-gradient(ellipse at 70% 0%, rgba(25, 167, 206, 0.09), transparent 40%),
                radial-gradient(ellipse at 10% 30%, rgba(11, 99, 197, 0.06), transparent 36%),
                var(--bg-deep);
        }

        .article-hero {
            position: relative;
            padding: 58px 0 54px;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            opacity: .18;
        }

        .article-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 17, 31, 0.58) 0%, var(--bg-deep) 100%);
        }

        .article-hero-inner {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }

        .breadcrumb a:hover {
            color: var(--brand-light);
        }

        .crumb-sep {
            color: rgba(255, 255, 255, 0.15);
            font-size: 12px;
        }

        .crumb-current {
            color: var(--text-secondary);
            max-width: 350px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-cat-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            color: var(--brand-light);
            background: rgba(25, 167, 206, 0.08);
            border: 1px solid rgba(103, 232, 249, 0.22);
            border-radius: 999px;
            padding: 6px 14px;
            font-weight: 500;
            letter-spacing: .04em;
            margin-bottom: 18px;
        }

        .article-title {
            font-size: clamp(28px, 4.6vw, 44px);
            line-height: 1.24;
            font-weight: 700;
            color: #F0F5FB;
            max-width: 1020px;
            margin: 0 0 24px;
            letter-spacing: .01em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 22px;
            color: var(--text-muted);
            font-size: 14px;
            padding-top: 2px;
            border-top: 1px dashed rgba(255, 255, 255, 0.1);
            padding-top: 20px;
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
        }

        .article-meta .meta-item svg {
            width: 16px;
            height: 16px;
        }

        .article-meta .meta-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.14);
        }

        /* article body */
        .article-section {
            padding: 52px 0 68px;
        }

        .article-body-inner {
            max-width: 940px;
            margin-inline: auto;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.012));
            border: 1px solid var(--line);
            border-radius: 28px;
            padding: clamp(28px, 5vw, 62px);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-body-inner::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 28px;
            pointer-events: none;
            background: radial-gradient(ellipse at top, rgba(103, 232, 249, 0.03), transparent 50%);
        }

        .article-prose {
            font-size: 17px;
            line-height: 1.85;
            color: #C8D6E5;
            position: relative;
        }

        .article-prose > *:first-child {
            margin-top: 0;
        }

        .article-prose p {
            margin: 1.05em 0;
        }

        .article-prose h2 {
            font-size: 26px;
            line-height: 1.4;
            color: #E9F0F8;
            font-weight: 700;
            margin: 36px 0 14px;
            padding-left: 14px;
            border-left: 4px solid var(--brand);
            border-radius: 2px;
        }

        .article-prose h3 {
            font-size: 21px;
            color: #DFE9F3;
            margin: 30px 0 12px;
        }

        .article-prose a {
            color: var(--brand-light);
            border-bottom: 1px solid rgba(103, 232, 249, 0.26);
            transition: border-color .2s ease;
        }

        .article-prose a:hover {
            border-bottom-color: var(--brand-light);
        }

        .article-prose ul,
        .article-prose ol {
            margin: 1em 0;
            padding-left: 1.4em;
        }

        .article-prose li {
            margin: 0.4em 0;
        }

        .article-prose blockquote {
            margin: 26px 0;
            padding: 18px 22px;
            background: rgba(255, 255, 255, 0.04);
            border-left: 3px solid var(--brand);
            border-radius: 0 14px 14px 0;
            color: var(--text-secondary);
        }

        .article-prose img {
            border-radius: 16px;
            margin: 28px auto;
            border: 1px solid rgba(255, 255, 255, 0.06);
            background: #0a1420;
        }

        .article-prose strong {
            color: #EAF1F8;
        }

        .article-prose code {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 2px 6px;
            border-radius: 6px;
            font-size: .9em;
        }

        .article-tail {
            margin-top: 34px;
            padding: 20px 0 30px;
            border-top: 1px dashed rgba(255, 255, 255, 0.12);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
        }

        .article-tail p {
            margin: 0;
            color: var(--text-muted);
            font-size: 14px;
        }

        .article-tail-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* related */
        .related-section {
            border-top: 1px solid var(--line);
            padding: 72px 0 76px;
            background: linear-gradient(180deg, transparent, rgba(16, 33, 52, 0.4));
        }

        .section-head {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 34px;
        }

        .section-eyebrow {
            margin: 0;
            font-size: 13px;
            color: var(--brand-light);
            letter-spacing: .1em;
            font-weight: 600;
        }

        .section-head h2 {
            margin: 0;
            font-size: 30px;
            font-weight: 700;
            color: #EAF1F8;
        }

        .section-head p:not(.section-eyebrow) {
            margin: 0;
            color: var(--text-muted);
            max-width: 640px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            border-radius: 20px;
            overflow: hidden;
            background: var(--bg-panel);
            border: 1px solid var(--line);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(103, 232, 249, 0.28);
            box-shadow: 0 16px 40px rgba(2, 8, 20, 0.35);
        }

        .related-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: radial-gradient(circle at 70% 20%, rgba(25, 167, 206, 0.16), transparent 55%), #0a1624;
        }

        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

        .related-card:hover .related-img img {
            transform: scale(1.04);
        }

        .related-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-body h3 {
            margin: 0;
            font-size: 17px;
            font-weight: 600;
            color: #E5EEF7;
        }

        .related-body p {
            margin: 0;
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--brand-light);
            font-size: 13px;
            margin-top: auto;
        }

        .related-link svg {
            width: 14px;
            height: 14px;
            transition: transform .2s ease;
        }

        .related-card:hover .related-link svg {
            transform: translateX(3px);
        }

        /* empty */
        .article-empty {
            padding: 130px 20px;
        }

        .not-found-card {
            max-width: 640px;
            margin-inline: auto;
            text-align: center;
            background: var(--bg-panel);
            border: 1px dashed rgba(255, 255, 255, 0.14);
            border-radius: 24px;
            padding: 70px 30px;
            box-shadow: var(--shadow-card);
        }

        .nf-icon {
            width: 68px;
            height: 68px;
            margin: 0 auto 24px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: rgba(25, 167, 206, 0.1);
            border: 1px solid rgba(103, 232, 249, 0.2);
            color: var(--brand-light);
        }

        .nf-icon svg {
            width: 30px;
            height: 30px;
        }

        .not-found-card h1 {
            margin: 0 0 12px;
            font-size: 26px;
            color: #E9F1F9;
        }

        .not-found-card p {
            margin: 0 0 26px;
            color: var(--text-muted);
            font-size: 15px;
        }

        /* footer */
        .site-footer {
            border-top: 1px solid var(--line);
            background: #060E18;
            padding-top: 70px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 52px;
        }

        .footer-brandtext {
            font-size: 22px;
            font-weight: 700;
            color: #EDF3FA;
            letter-spacing: .02em;
            margin-bottom: 10px;
        }

        .footer-desc {
            margin: 0 0 22px;
            color: var(--text-muted);
            font-size: 14px;
            max-width: 380px;
        }

        .footer-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-tags span {
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 999px;
            padding: 5px 12px;
        }

        .footer-title {
            font-size: 15px;
            color: #D9E5F1;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: .04em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 14px;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: var(--brand-light);
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact p {
            margin: 0;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .footer-contact svg {
            width: 18px;
            height: 18px;
            flex: none;
            margin-top: 3px;
            opacity: .7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 18px 0 22px;
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom-inner p {
            margin: 0;
        }

        @media (max-width: 1280px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 1024px) {
            .header-nav {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .header-search {
                width: 220px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 32px, 1280px);
            }

            .header-search {
                display: none;
            }

            .brand-name {
                font-size: 17px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
            }

            .article-hero {
                padding: 36px 0 38px;
            }

            .article-meta {
                gap: 8px 14px;
                font-size: 13px;
            }

            .article-meta .meta-divider {
                display: none;
            }

            .article-title {
                font-size: 28px;
            }

            .article-section {
                padding: 36px 0 46px;
            }

            .article-body-inner {
                padding: 26px 22px;
                border-radius: 20px;
            }

            .article-prose {
                font-size: 16px;
                line-height: 1.8;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-section {
                padding: 50px 0 54px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .article-tail {
                align-items: flex-start;
                flex-direction: column;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 36px;
            }
        }

        @media (max-width: 540px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .breadcrumb .crumb-current {
                max-width: 160px;
            }

            .article-body-inner {
                padding: 22px 17px;
            }
        }

/* roulang page: category2 */
:root{
    --bg-deep:#07111F;
    --bg-navy:#0C192A;
    --bg-panel:#102134;
    --brand:#19A7CE;
    --brand-light:#67E8F9;
    --brand-blue:#0B63C5;
    --amber:#F4B942;
    --text-main:#E6EEF7;
    --text-sub:#9FB3C8;
    --text-mute:#6D8299;
    --line:rgba(255,255,255,0.08);
    --line-soft:rgba(255,255,255,0.12);
    --radius:20px;
    --radius-sm:12px;
    --radius-tag:6px;
    --shadow:0 8px 30px rgba(2,8,20,.25);
    --max-width:1280px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-deep);
    color:var(--text-main);
    font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  body.is-scrolled .site-header{
    background:rgba(7,17,31,.86);
    backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(255,255,255,.06);
    box-shadow:0 10px 30px rgba(2,8,20,.35);
  }
  .container{
    max-width:var(--max-width);
    margin-left:auto;
    margin-right:auto;
    padding:0 24px;
  }
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  img{display:block;max-width:100%;}
  h1,h2,h3,h4,p{margin-top:0;}
  .relative{position:relative;}

  .site-header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(7,17,31,.74);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.04);
    transition:all .25s ease;
  }
  .header-top{
    border-bottom:1px solid rgba(255,255,255,.05);
    padding:10px 0;
  }
  .header-top .header-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
  }
  .header-brand{
    font-size:21px;
    font-weight:800;
    letter-spacing:.02em;
    color:var(--text-main);
    display:inline-flex;
    align-items:center;
    gap:10px;
  }
  .header-brand .brand-spark{
    width:10px;
    height:10px;
    border-radius:50%;
    background:var(--brand-light);
    box-shadow:0 0 12px rgba(103,232,249,.85);
  }
  .header-side{
    display:flex;
    align-items:center;
    gap:12px;
    color:var(--text-sub);
    font-size:13px;
  }
  .header-side .side-pin{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--text-sub);
    padding:5px 10px;
    border:1px solid var(--line);
    border-radius:999px;
    font-size:12px;
  }
  .header-side .side-pin::before{
    content:"";
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--amber);
  }
  .nav-shell{
    padding:8px 0;
  }
  .main-nav{
    display:flex;
    align-items:center;
    flex-wrap:nowrap;
    gap:4px;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .main-nav::-webkit-scrollbar{display:none;}
  .main-nav .nav-link{
    color:var(--text-sub);
    font-size:15px;
    line-height:1;
    padding:10px 15px;
    border-radius:999px;
    white-space:nowrap;
    transition:all .2s ease;
  }
  .main-nav .nav-link:hover{
    color:var(--text-main);
    background:rgba(255,255,255,.05);
  }
  .main-nav .nav-link.active{
    color:#ffffff;
    background:linear-gradient(135deg,rgba(25,167,206,.25),rgba(11,99,197,.15));
    box-shadow:inset 0 0 0 1px rgba(103,232,249,.35), 0 0 20px rgba(25,167,206,.18);
    font-weight:600;
  }
  .nav-hot{
    display:flex;
    align-items:center;
    gap:8px;
    margin-left:auto;
    padding-left:14px;
  }
  .nav-hot span{
    color:var(--text-mute);
    font-size:12px;
    border:1px solid rgba(255,255,255,.06);
    border-radius:999px;
    padding:4px 10px;
    white-space:nowrap;
    background:rgba(255,255,255,.02);
  }
  .nav-hot span:first-child{
    color:var(--amber);
    border-color:rgba(244,185,66,.22);
  }

  .page-hero{
    position:relative;
    background:
      linear-gradient(130deg, rgba(7,17,31,.97), rgba(7,17,31,.78) 40%, rgba(16,33,52,.86)),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-bottom:1px solid var(--line);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    right:-120px;
    top:-100px;
    width:420px;
    height:420px;
    background:radial-gradient(circle,rgba(25,167,206,.18),transparent 60%);
    pointer-events:none;
  }
  .hero-inner{
    position:relative;
    z-index:2;
    padding:58px 0 62px;
  }
  .hero-breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-mute);
    margin-bottom:18px;
  }
  .hero-breadcrumb a{
    color:var(--text-sub);
  }
  .hero-breadcrumb a:hover{
    color:var(--brand-light);
  }
  .hero-breadcrumb .crumb-now{
    color:var(--brand-light);
  }
  .hero-title{
    max-width:960px;
    font-size:clamp(32px,5vw,52px);
    line-height:1.2;
    font-weight:700;
    letter-spacing:.02em;
    margin:0 0 18px;
  }
  .hero-title .gradient-text{
    background:linear-gradient(90deg,#F4B942,#67E8F9);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-sub{
    max-width:760px;
    color:var(--text-sub);
    font-size:17px;
    margin-bottom:32px;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    align-items:center;
  }
  .btn-primary,.btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:48px;
    padding:0 24px;
    border-radius:12px;
    font-size:15px;
    font-weight:600;
    transition:all .2s ease;
  }
  .btn-primary{
    background:linear-gradient(135deg,#19A7CE,#0B63C5);
    color:#ffffff;
    box-shadow:0 0 20px rgba(25,167,206,.22);
  }
  .btn-primary:hover{
    filter:brightness(1.1);
    box-shadow:0 0 26px rgba(25,167,206,.45);
    transform:translateY(-1px);
  }
  .btn-primary:active{
    transform:translateY(1px);
    box-shadow:0 4px 10px rgba(2,8,20,.3);
  }
  .btn-ghost{
    background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.12);
    color:var(--text-main);
  }
  .btn-ghost:hover{
    border-color:rgba(103,232,249,.38);
    box-shadow:0 0 18px rgba(25,167,206,.1);
  }
  .hero-quick{
    display:flex;
    align-items:center;
    gap:10px;
    margin-top:46px;
    font-size:14px;
    color:var(--text-mute);
    flex-wrap:wrap;
  }
  .quick-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--text-sub);
    border:1px solid rgba(255,255,255,.09);
    background:rgba(255,255,255,.02);
    border-radius:999px;
    padding:6px 13px;
    font-size:13px;
  }
  .quick-tag::before{
    content:"";
    width:5px;
    height:5px;
    border-radius:50%;
    background:var(--brand-light);
  }

  .stats-strip{
    border-bottom:1px solid var(--line);
    background:rgba(12,25,42,.6);
  }
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:18px;
    padding:24px 0;
  }
  .stats-item{
    display:flex;
    align-items:center;
    gap:12px;
  }
  .stats-icon{
    width:36px;
    height:36px;
    border-radius:10px;
    background:rgba(25,167,206,.12);
    border:1px solid rgba(25,167,206,.18);
    color:var(--brand-light);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    flex:none;
  }
  .stats-item strong{
    font-size:18px;
    font-weight:700;
    display:block;
    line-height:1.2;
  }
  .stats-item span{
    font-size:12px;
    color:var(--text-mute);
  }

  .section{
    padding:64px 0;
  }
  .section-alt{
    background:linear-gradient(180deg,#0A1727,#0C192A);
  }
  .section-head{
    margin-bottom:34px;
    max-width:760px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--brand-light);
    font-size:13px;
    letter-spacing:.08em;
    margin-bottom:12px;
    text-transform:none;
  }
  .eyebrow::before{
    content:"";
    width:22px;
    height:1px;
    background:var(--brand);
  }
  h2.section-title{
    font-size:30px;
    line-height:1.3;
    font-weight:700;
    margin-bottom:10px;
  }
  .section-desc{
    color:var(--text-sub);
    font-size:15px;
    margin-bottom:20px;
  }
  .state-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:18px;
  }
  .state-card{
    background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:24px;
    position:relative;
    overflow:hidden;
    transition:all .2s ease;
  }
  .state-card:hover{
    border-color:rgba(103,232,249,.28);
    transform:translateY(-3px);
    box-shadow:var(--shadow);
  }
  .state-card .state-pin{
    display:inline-flex;
    align-items:center;
    font-size:12px;
    padding:5px 10px;
    border-radius:6px;
    color:var(--brand-light);
    background:rgba(25,167,206,.12);
    border:1px solid rgba(25,167,206,.18);
    margin-bottom:12px;
  }
  .state-card h3{
    font-size:18px;
    font-weight:600;
    margin-bottom:8px;
  }
  .state-card p{
    color:var(--text-sub);
    font-size:14px;
    margin-bottom:0;
  }

  .flow-block{
    display:grid;
    grid-template-columns:minmax(0,1fr) 340px;
    gap:26px;
  }
  .flow-main .steps-list{
    display:grid;
    gap:14px;
    margin:0;
  }
  .step-item{
    list-style:none;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:rgba(255,255,255,.02);
    padding:22px 24px;
    display:flex;
    gap:18px;
    align-items:flex-start;
    transition:all .2s ease;
  }
  .step-item:hover{
    background:rgba(16,33,52,.55);
    border-color:rgba(103,232,249,.28);
    transform:translateX(3px);
  }
  .step-no{
    flex:none;
    width:44px;
    height:44px;
    border-radius:14px;
    background:linear-gradient(135deg,rgba(25,167,206,.22),rgba(11,99,197,.16));
    border:1px solid rgba(103,232,249,.3);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:700;
    color:var(--brand-light);
  }
  .step-body h3{
    margin:0 0 6px;
    font-size:17px;
    font-weight:700;
  }
  .step-body p{
    margin:0;
    color:var(--text-sub);
    font-size:14px;
  }
  .flow-aside{
    background:
      linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),
      rgba(16,33,52,.65);
    border:1px solid rgba(255,255,255,.1);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:28px;
    align-self:start;
    position:sticky;
    top:110px;
  }
  .flow-aside h2{
    font-size:20px;
    margin-bottom:16px;
  }
  .flow-aside p{
    color:var(--text-sub);
    font-size:14px;
    margin-bottom:16px;
  }
  .aside-nav{
    list-style:none;
    margin:0;
    padding:0;
    display:grid;
    gap:4px;
  }
  .aside-nav a{
    color:var(--text-sub);
    font-size:14px;
    padding:8px 10px;
    border-radius:10px;
    display:flex;
    align-items:center;
    gap:8px;
  }
  .aside-nav a::before{
    content:"→";
    color:var(--brand);
  }
  .aside-nav a:hover{
    background:rgba(255,255,255,.05);
    color:var(--text-main);
  }

  .panel-card{
    overflow:hidden;
    border:1px solid var(--line);
    border-radius:22px;
    background:rgba(255,255,255,.02);
    display:grid;
    grid-template-columns:1fr 1fr;
  }
  .panel-info{
    padding:30px;
  }
  .panel-info h2{
    font-size:24px;
    margin:0 0 12px;
  }
  .panel-info p{
    font-size:15px;
    color:var(--text-sub);
    margin-bottom:14px;
  }
  .panel-image{
    background:
      linear-gradient(180deg,rgba(7,17,31,.2),rgba(7,17,31,.7)),
      url('/assets/images/coverpic/cover-5.webp') center/cover no-repeat;
    min-height:300px;
  }
  .hotline-tips{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
    margin-top:28px;
  }
  .tip-mini{
    background:rgba(255,255,255,.03);
    border:1px solid var(--line);
    border-radius:16px;
    padding:18px;
  }
  .tip-mini h3{
    font-size:16px;
    margin-bottom:6px;
  }
  .tip-mini p{
    color:var(--text-sub);
    font-size:13px;
    margin:0;
  }

  .faq-area{
    background:linear-gradient(180deg,#0A1727,#07111F);
    border-top:1px solid var(--line);
  }
  .faq-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:16px;
  }
  .faq-item{
    background:rgba(255,255,255,.03);
    border:1px solid var(--line);
    border-radius:18px;
    height:fit-content;
  }
  .faq-question{
    width:100%;
    background:none;
    border:0;
    padding:18px 22px;
    color:var(--text-main);
    font-size:15px;
    text-align:left;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:16px;
    cursor:pointer;
  }
  .faq-question::before{
    content:"Q";
    color:var(--brand-light);
    font-weight:800;
    flex:none;
    background:rgba(25,167,206,.12);
    width:26px;
    height:26px;
    border-radius:8px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:13px;
  }
  .faq-chevron{
    color:var(--text-mute);
    transition:transform .25s ease;
    flex:none;
  }
  .faq-item.open .faq-chevron{
    transform:rotate(180deg);
  }
  .faq-answer{
    display:none;
    padding:0 22px 20px 50px;
    color:var(--text-sub);
    font-size:14px;
  }
  .faq-item.open .faq-answer{
    display:block;
  }

  .cta-banner{
    position:relative;
    border-radius:24px;
    overflow:hidden;
    padding:44px 46px;
    background:
      linear-gradient(120deg,rgba(7,17,31,.88),rgba(16,33,52,.72)),
      url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    border:1px solid rgba(255,255,255,.1);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:30px;
  }
  .cta-banner h2{
    font-size:26px;
    margin-bottom:6px;
  }
  .cta-banner p{
    color:var(--text-sub);
    font-size:15px;
    margin-bottom:0;
  }
  .cta-actions{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
    flex:none;
  }

  .site-footer{
    background:linear-gradient(180deg,#08121F,#060D17);
    border-top:1px solid var(--line);
    padding-top:60px;
    margin-top:60px;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:36px;
    padding-bottom:36px;
  }
  .footer-brandtext{
    font-size:24px;
    font-weight:800;
    margin-bottom:10px;
  }
  .footer-desc{
    color:var(--text-sub);
    font-size:14px;
    max-width:320px;
  }
  .footer-tags{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:16px;
  }
  .footer-tags span{
    border:1px solid var(--line);
    border-radius:999px;
    padding:4px 12px;
    font-size:12px;
    color:var(--text-mute);
  }
  .footer-title{
    color:var(--text-main);
    font-weight:600;
    font-size:16px;
    margin-bottom:14px;
  }
  .footer-links{
    list-style:none;
    margin:0;
    padding:0;
    display:grid;
    gap:8px;
  }
  .footer-links a{
    color:var(--text-sub);
    font-size:14px;
    transition:all .2s ease;
  }
  .footer-links a:hover{
    color:var(--brand-light);
    padding-left:3px;
  }
  .footer-contact{
    display:grid;
    gap:10px;
    color:var(--text-sub);
    font-size:14px;
  }
  .footer-contact svg{
    width:16px;
    height:16px;
    flex:none;
  }
  .footer-contact p{
    display:flex;
    align-items:flex-start;
    gap:8px;
    margin:0;
    color:var(--text-sub);
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.05);
    padding:18px 0;
    color:var(--text-mute);
    font-size:13px;
    display:flex;
    gap:14px;
    justify-content:space-between;
    flex-wrap:wrap;
  }
  .footer-bottom .tech-line{
    color:var(--text-mute);
  }

  @media (max-width: 1024px){
    .state-grid,.hotline-tips{
      grid-template-columns:repeat(2,1fr);
    }
    .flow-block{
      grid-template-columns:1fr;
    }
    .flow-aside{
      position:static;
    }
    .panel-card{
      grid-template-columns:1fr;
    }
    .panel-image{
      min-height:220px;
    }
    .footer-top{
      grid-template-columns:repeat(2,1fr);
    }
  }
  @media (max-width: 768px){
    .container{padding:0 20px;}
    .section{padding:44px 0;}
    .stats-grid{
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .stats-item{
      align-items:flex-start;
    }
    .faq-grid{
      grid-template-columns:1fr;
    }
    .cta-banner{
      padding:30px 22px;
      flex-direction:column;
      align-items:flex-start;
    }
    .cta-actions{
      width:100%;
    }
    .cta-actions .btn-primary,.cta-actions .btn-ghost{
      width:100%;
    }
    .state-grid,.hotline-tips{
      grid-template-columns:1fr;
    }
    .panel-info{
      padding:24px;
    }
    .footer-top{
      grid-template-columns:1fr 1fr;
      gap:28px;
    }
  }
  @media (max-width: 520px){
    .header-brand{
      font-size:19px;
    }
    .header-side .side-pin{
      display:none;
    }
    .footer-top{
      grid-template-columns:1fr;
    }
    .hero-title{
      font-size:30px;
    }
    .hero-sub{
      font-size:16px;
    }
    .stats-grid{
      grid-template-columns:1fr;
    }
    .stats-item{
      border-bottom:1px solid rgba(255,255,255,.05);
      padding-bottom:12px;
    }
    .step-item{
      flex-direction:column;
      gap:10px;
    }
    .step-no{
      width:38px;
      height:38px;
      border-radius:12px;
      font-size:16px;
    }
    .section-title{
      font-size:24px;
    }
  }

/* roulang page: category3 */
:root{
        --bg:#07111F;
        --bg-deep:#040B14;
        --bg-soft:#0C192A;
        --bg-panel:#102134;
        --brand-cyan:#19A7CE;
        --brand-blue:#0B63C5;
        --brand-glow:#67E8F9;
        --accent:#F4B942;
        --text-main:#E6EEF7;
        --text-sub:#9FB3C8;
        --text-weak:#6D8299;
        --border:rgba(255,255,255,.08);
        --border-bright:rgba(255,255,255,.16);
        --radius-xs:6px;
        --radius-sm:12px;
        --radius-lg:20px;
        --radius-xl:28px;
        --shadow-card:0 8px 30px rgba(2,8,20,.25);
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
        font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
        background:
            radial-gradient(900px 380px at 85% -120px, rgba(25,167,206,.10), transparent 62%),
            radial-gradient(700px 340px at -10% 5%, rgba(11,99,197,.12), transparent 55%),
            var(--bg);
        color:var(--text-main);
        font-size:16px;
        line-height:1.75;
        -webkit-font-smoothing:antialiased;
        text-rendering:optimizeLegibility;
    }
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit;color:inherit}
    ul,ol{list-style:none}
    .container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:24px}
    .section{padding-block:64px}
    .section-sm{padding-block:40px}
    .section-title{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:.01em;margin-bottom:8px}
    .section-sub{color:var(--text-sub);font-size:16px;max-width:760px;margin-bottom:24px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.1em;color:var(--brand-glow);font-weight:600;text-transform:uppercase;margin-bottom:12px}
    .eyebrow:before{content:"";width:18px;height:1px;background:linear-gradient(90deg,transparent,var(--brand-cyan))}
    .eyebrow.text-left:before{background:linear-gradient(90deg,var(--brand-cyan),transparent);order:2}

    .site-header{
        position:sticky;top:0;z-index:60;
        background:rgba(7,17,31,.82);
        border-bottom:1px solid var(--border);
        backdrop-filter:blur(18px);
        -webkit-backdrop-filter:blur(18px);
    }
    .header-main{min-height:60px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:.015em;white-space:nowrap}
    .brand-mark{width:32px;height:32px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;color:#07111F;background:linear-gradient(135deg,var(--brand-cyan),var(--brand-blue));box-shadow:0 0 0 1px rgba(255,255,255,.25),0 6px 18px rgba(25,167,206,.35)}
    .brand-mark svg{width:19px;height:19px}
    .header-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
    .header-search{display:none;align-items:center;gap:8px;width:min(320px,30vw);height:36px;border:1px solid var(--border-bright);border-radius:12px;background:rgba(12,25,42,.8);padding:0 12px;color:var(--text-weak);transition:.25s}
    .header-search:focus-within{border-color:rgba(25,167,206,.7);box-shadow:0 0 0 3px rgba(25,167,206,.18)}
    .header-search svg{width:16px;height:16px;flex:0 0 auto}
    .header-search input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--text-main)}
    .header-memo{display:none;color:var(--text-weak);font-size:13px;align-items:center;gap:8px;padding-left:16px;border-left:1px solid var(--border)}
    .header-memo svg{width:16px;height:16px;color:var(--accent)}
    .menu-label{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:12px;background:var(--bg-soft);color:var(--text-main);align-items:center;justify-content:center;font-size:23px;cursor:pointer;transition:.2s}
    .menu-label:hover{border-color:rgba(25,167,206,.55);color:var(--brand-glow)}
    .menu-label svg{width:21px;height:21px}
    .navigation{display:block;overflow-x:auto;scrollbar-width:none}
    .navigation::-webkit-scrollbar{display:none}
    .nav-flex{border-top:1px solid var(--border);display:flex;gap:6px;align-items:center;min-height:49px;padding-inline:0}
    .main-nav{display:flex;gap:4px;align-items:center;width:auto}
    .main-nav .nav-link,.nav-inner-link{
        display:inline-flex;align-items:center;white-space:nowrap;padding:10px 15px;font-size:14px;color:var(--text-sub);
        border-radius:10px;transition:.22s;position:relative;line-height:1.2;font-weight:500
    }
    .nav-link:hover,.nav-inner-link:hover{color:#fff;background:rgba(255,255,255,.06)}
    .nav-link.active{color:var(--brand-glow);background:rgba(25,167,206,.08)}
    .nav-link.active:after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:linear-gradient(90deg,var(--brand-cyan),transparent);border-radius:99px;box-shadow:0 0 12px rgba(25,167,206,.55)}
    .nav-hot{margin-left:auto;display:flex;gap:8px;align-items:center;padding-left:20px}
    .nav-hot span{font-size:12px;line-height:1;padding:7px 10px;border:1px solid var(--border);border-radius:99px;color:var(--text-sub);background:rgba(255,255,255,.03)}
    .nav-hot span:first-child{color:var(--accent);border-color:rgba(244,185,66,.28);background:rgba(244,185,66,.08)}

    .page-hero{position:relative;overflow:hidden;background:
        linear-gradient(100deg, rgba(7,17,31,.96) 0%, rgba(12,25,42,.88) 48%, rgba(16,33,52,.68) 100%),
        url('/assets/images/backpic/back-2.png'),#0C192A;
        background-size:cover;background-position:center;padding:84px 0 74px}
    .page-hero:after{content:"";position:absolute;width:320px;height:320px;right:6%;top:20%;border-radius:50%;background:rgba(25,167,206,.10);filter:blur(60px);pointer-events:none}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:var(--text-weak);font-size:13px;margin-bottom:22px}
    .breadcrumb a{color:var(--text-sub)}
    .breadcrumb a:hover{color:var(--brand-glow)}
    .breadcrumb i{font-style:normal;color:var(--text-weak);opacity:.65}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr);gap:52px;align-items:center;position:relative;z-index:2}
    .hero-title{font-size:clamp(32px,5vw,56px);line-height:1.22;font-weight:800;letter-spacing:.01em;margin-bottom:18px}
    .hero-title .cyan{color:var(--brand-glow)}
    .hero-lead{font-size:17px;line-height:1.9;color:var(--text-sub);max-width:640px;margin-bottom:30px}
    .btn-row{display:flex;flex-wrap:wrap;gap:12px}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:12px;padding:0 22px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.22s}
    .btn svg{width:18px;height:18px;transition:transform .22s}
    .btn-primary{background:linear-gradient(135deg,#19A7CE,#0B63C5);color:#04101c;box-shadow:0 12px 24px rgba(10,70,130,.28),inset 0 1px 0 rgba(255,255,255,.22)}
    .btn-primary:hover{box-shadow:0 0 20px rgba(25,167,206,.38),0 12px 30px rgba(10,70,130,.3);filter:brightness(1.12)}
    .btn-primary:hover svg{transform:translateX(4px)}
    .btn-primary:active{transform:translateY(1px)}
    .btn-ghost{background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.03));border-color:var(--border-bright);color:var(--text-main);box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
    .btn-ghost:hover{border-color:rgba(25,167,206,.65);color:#fff;box-shadow:0 0 16px rgba(25,167,206,.1)}
    .btn-ghost:hover svg{transform:translateX(3px)}
    .hero-panel{background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.02)),rgba(16,33,52,.76);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:24px 22px;box-shadow:var(--shadow-card);backdrop-filter:blur(14px)}
    .hero-panel-title{display:flex;align-items:center;gap:8px;font-weight:700;font-size:16px;margin-bottom:16px;color:var(--text-main)}
    .hero-panel-title svg{width:17px;height:17px;color:var(--brand-glow)}
    .hero-panel-list{display:flex;flex-direction:column;gap:10px}
    .hero-panel-item{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-sub)}
    .hero-panel-item span:nth-child(1){width:20px;height:20px;border-radius:7px;background:rgba(25,167,206,.12);display:grid;place-items:center;color:var(--brand-glow);font-size:11px;margin-top:1px;border:1px solid rgba(25,167,206,.12)}
    .hero-panel-note{margin-top:18px;padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--text-weak)}
    .kicker{font-size:13px;letter-spacing:.04em;color:var(--text-sub);display:flex;gap:8px;align-items:flex-start;margin-top:6px}

    .directory-wrap{margin-top:16px;overflow:hidden;border-radius:20px;border:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.005));box-shadow:var(--shadow-card)}
    .dir-head{display:flex;align-items:flex-start;gap:12px;padding:18px 20px;background:rgba(16,33,52,.7);border-bottom:1px solid var(--border)}
    .dir-head:nth-child(n+1):not(:first-child){border-top:1px solid var(--border)}
    .dir-index{background:linear-gradient(135deg,rgba(25,167,206,.2),rgba(11,99,197,.2));border:1px solid rgba(25,167,206,.22);color:var(--brand-glow);font-size:13px;min-width:34px;height:30px;display:grid;place-items:center;border-radius:9px;font-weight:700}
    .dir-head-copy h3{font-size:17px;font-weight:700;letter-spacing:.01em;margin-bottom:3px;color:#fff}
    .dir-head-copy p{font-size:13px;color:var(--text-sub);line-height:1.6}
    .dir-num{margin-left:auto;text-align:right;color:var(--text-weak);font-size:12px;white-space:nowrap;padding-top:2px}
    .dir-list{border-top:1px solid rgba(255,255,255,.07)}
    .dir-row{display:grid;grid-template-columns:.55fr 1.7fr 1fr .5fr;gap:14px;padding:14px 20px;align-items:center;border-bottom:1px solid rgba(255,255,255,.05);transition:.2s}
    .dir-row:last-child{border-bottom:0}
    .dir-row:hover{background:rgba(25,167,206,.06)}
    .dir-name{font-weight:600;font-size:15px;color:var(--text-main)}
    .dir-desc{font-size:14px;color:var(--text-sub);line-height:1.7}
    .dir-type{display:inline-flex;width:max-content;font-size:12px;line-height:1;padding:5px 10px;border-radius:99px;border:1px solid var(--border-bright);color:var(--text-sub);background:rgba(255,255,255,.02)}
    .dir-tag{font-size:13px;color:var(--text-weak);text-align:right;white-space:nowrap}
    .cover-figure{position:relative;border-radius:20px;overflow:hidden;min-height:240px}
    .cover-figure img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .cover-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,11,22,.04),rgba(4,11,22,.95));z-index:1}
    .cover-caption{position:absolute;left:22px;right:22px;bottom:18px;z-index:2;color:#fff;font-size:16px;font-weight:700;line-height:1.7}
    .sure-list{display:flex;flex-direction:column;margin-top:16px}
    .sure-row{display:flex;gap:12px;border-bottom:1px solid rgba(255,255,255,.07);padding:13px 2px;font-size:15px;color:var(--text-main);align-items:flex-start}
    .sure-row:last-child{border:0}
    .check-ico{width:23px;height:23px;flex:0 0 auto;border-radius:7px;border:1px solid rgba(25,167,206,.3);display:grid;place-items:center;color:var(--brand-glow);margin-top:2px}
    .sure-row b{font-weight:700;display:block;font-size:15px;margin-bottom:1px}
    .sure-row span{font-size:13px;color:var(--text-sub)}

    .timeline{margin-top:18px;display:flex;align-items:stretch;gap:14px}
    .tl-item{position:relative;flex:1;padding:22px 18px;border:1px solid var(--border);border-radius:16px;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.008));transition:.22s}
    .tl-item:hover{border-color:rgba(25,167,206,.35)}
    .tl-item:not(:last-child):after{content:"";position:absolute;top:50%;right:-10px;width:20px;height:1px;background:rgba(25,167,206,.35)}
    .tl-index{font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;min-width:35px;height:26px;border-radius:8px;background:rgba(25,167,206,.15);color:var(--brand-glow);border:1px solid rgba(25,167,206,.18);margin-bottom:14px}
    .tl-item h3{font-size:16px;font-weight:700;margin-bottom:9px;color:#fff}
    .tl-item p{font-size:13px;color:var(--text-sub);line-height:1.7}

    .notice-band{border:1px solid rgba(244,185,66,.22);background:linear-gradient(90deg,rgba(244,185,66,.1),rgba(244,185,66,.02));border-radius:16px;padding:22px 26px;display:flex;gap:16px;align-items:flex-start;color:var(--text-sub)}
    .notice-band svg{width:22px;height:22px;color:var(--accent);flex:0 0 auto;margin-top:2px}
    .notice-band strong{display:block;color:#fff;font-weight:700;margin-bottom:2px;font-size:16px}
    .notice-band p{font-size:15px;line-height:1.7}

    .faq-section{background:linear-gradient(180deg,rgba(16,33,52,.5),rgba(16,33,52,.18));border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:16px}
    .faq-item{border:1px solid var(--border);border-radius:16px;background:rgba(7,17,31,.55);overflow:hidden;transition:.22s}
    .faq-item:hover{border-color:rgba(25,167,206,.3)}
    .faq-q{list-style:none;width:100%;display:flex;gap:12px;align-items:center;justify-content:space-between;padding:17px 19px;font-size:15px;font-weight:600;color:var(--text-main);cursor:pointer;text-align:left;background:transparent;border:0}
    .faq-q:hover{background:rgba(255,255,255,.03)}
    .qno{background:rgba(25,167,206,.12);color:var(--brand-glow);min-width:26px;height:26px;display:grid;place-items:center;border-radius:8px;font-size:12px;font-weight:700;flex:0 0 auto}
    .faq-q .qtext{flex:1;line-height:1.5}
    .faq-q .faq-icon{flex:0 0 auto;width:20px;height:20px;color:var(--text-weak);transition:transform .3s}
    .faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);color:var(--brand-glow)}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
    .faq-answer-inner{padding:0 19px 19px 57px;color:var(--text-sub);font-size:14px;line-height:1.85}
    .faq-answer-inner p{font-size:14px;line-height:1.85}

    .cta-panel{position:relative;overflow:hidden;padding:54px;border-radius:28px;border:1px solid rgba(255,255,255,.1);background:rgba(16,33,52,.8),url('/assets/images/backpic/back-3.png');background-image:linear-gradient(120deg,rgba(7,17,31,.97),rgba(12,25,42,.9)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;box-shadow:var(--shadow-card)}
    .cta-panel-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;position:relative;z-index:2}
    .cta-text h2{font-size:clamp(22px,3vw,31px);line-height:1.35;font-weight:800;margin-bottom:8px}
    .cta-text p{color:var(--text-sub);max-width:700px;font-size:15px;line-height:1.8}
    .cta-tools{display:flex;gap:12px;flex-wrap:wrap}

    .site-footer{border-top:1px solid var(--border);background:#050E1A;padding:64px 0 24px;margin-top:0}
    .footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--border)}
    .footer-brandtext{font-size:22px;font-weight:800;letter-spacing:.01em;display:flex;align-items:center;gap:9px;margin-bottom:12px}
    .footer-brandtext svg{color:var(--brand-cyan)}
    .footer-desc{color:var(--text-sub);font-size:14px;line-height:1.9;max-width:400px;margin-bottom:18px}
    .footer-tags{display:flex;flex-wrap:wrap;gap:8px}
    .footer-tags span{font-size:12px;line-height:1;color:var(--text-sub);border:1px solid var(--border);padding:7px 11px;border-radius:99px;background:rgba(255,255,255,.02)}
    .footer-title{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff}
    .footer-links{display:flex;flex-direction:column;gap:9px}
    .footer-links a{color:var(--text-sub);font-size:14px;transition:.2s}
    .footer-links a:hover{color:var(--brand-glow);padding-left:4px}
    .footer-contact p{display:flex;align-items:flex-start;gap:9px;margin-bottom:13px;color:var(--text-sub);font-size:14px}
    .footer-contact svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:var(--text-weak)}
    .footer-copy{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:24px;color:var(--text-weak);font-size:13px}
    .footer-copy a{color:#899db1}
    .footer-copy a:hover{color:var(--brand-glow)}

    @media(max-width:1100px){
        .dir-row{grid-template-columns:.5fr 1.4fr 1fr;gap:10px}
        .dir-tag{display:none}
        .hero-grid{grid-template-columns:1fr 1fr;gap:30px}
        .hero-panel{padding:20px}
        .footer-top{grid-template-columns:1fr 1fr}
    }
    @media(max-width:1023px){
        .header-memo{display:none}
        .menu-label{display:inline-flex}
        .navigation{display:none;position:absolute;left:auto;right:0;top:0;bottom:0;height:100vh;width:min(350px,82vw);background:#08121f;padding:70px 24px 30px;z-index:90;box-shadow:-28px 0 60px rgba(0,0,0,.45);border-left:1px solid var(--border-bright);overflow-y:auto}
        .menu-open:focus-within .navigation,.site-header:focus-within .navigation,.navigation.is-open{display:block}
        .nav-close{display:flex;position:absolute;top:18px;right:18px;width:32px;height:32px;align-items:center;justify-content:center;border-radius:9px;font-size:20px;color:var(--text-sub);cursor:pointer}
        .nav-close:hover{color:#fff}
    }
    @media(max-width:1024px){
        .section{padding-block:50px}
        .hero-title{font-size:38px}
        .timeline{flex-direction:column}
        .tl-item:not(:last-child):after{display:none}
        .page-hero{padding:58px 0 60px}
    }
    @media(max-width:900px){
        .hero-grid{grid-template-columns:1fr}
        .hero-panel{max-width:580px}
        .nav-hot{display:none}
        .faq-grid{grid-template-columns:1fr}
        .dir-row{grid-template-columns:1fr;gap:6px;padding:15px 18px}
        .dir-tag{display:inline-flex;justify-content:flex-start}
    }
    @media(max-width:767px){
        .container{padding-inline:16px}
        .brand{font-size:18px}
        .section{padding-block:38px}
        .hero-title{font-size:31px}
        .hero-lead{font-size:15px}
        .btn{width:100%;max-width:340px}
        .footer-top{grid-template-columns:1fr;gap:26px}
        .cta-panel{padding:30px 22px}
        .footer-copy{flex-direction:column}
        .dir-head{flex-wrap:wrap}
        .dir-num{display:block;width:100%;text-align:left;padding-left:46px;padding-top:0}
        .hero-panel-title{font-size:15px}
        .header-search{display:none}
    }
    @media(min-width:1024px){
        .nav-close{display:none}
    }
    .focus-ring:focus-visible{outline:2px solid rgba(25,167,206,.7);outline-offset:3px;border-radius:8px}

/* roulang page: category4 */
:root {
            --bg-deep: #07111F;
            --bg-sub: #0C192A;
            --bg-panel: #102134;
            --brand: #19A7CE;
            --brand-bright: #67E8F9;
            --brand-deep: #0B63C5;
            --accent: #F4B942;
            --text-main: #E6EEF7;
            --text-sub: #9FB3C8;
            --text-weak: #6D8299;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.13);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 30px rgba(2, 8, 20, 0.25);
            --font: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font: inherit;
            cursor: pointer;
            border: 0;
            background: none;
        }

        img {
            display: block;
            max-width: 100%;
        }

        svg {
            flex-shrink: 0;
        }

        :focus-visible {
            outline: 2px solid var(--brand-bright);
            outline-offset: 3px;
            border-radius: var(--radius-md);
        }

        .container {
            width: min(1280px, 100% - 48px);
            margin-inline: auto;
        }

        @media (max-width: 640px) {
            .container {
                width: calc(100% - 32px);
            }
        }

        ::selection {
            background: rgba(25, 167, 206, 0.3);
            color: #fff;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(7, 17, 31, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            transition: background .3s ease, border .3s ease, box-shadow .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(7, 17, 31, 0.92);
            border-bottom-color: var(--border);
            box-shadow: 0 12px 40px rgba(2, 8, 20, 0.35);
        }

        .header-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 66px;
            gap: 16px;
            padding-top: 8px;
            padding-bottom: 8px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            line-height: 1.2;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .brand-badge {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(25, 167, 206, 0.16), rgba(11, 99, 197, 0.28));
            border: 1px solid rgba(103, 232, 249, 0.28);
            border-radius: 12px;
            color: var(--brand-bright);
            box-shadow: 0 0 18px rgba(25, 167, 206, 0.1);
        }

        .brand-name {
            white-space: nowrap;
        }

        .brand-name em {
            font-style: normal;
            color: var(--brand-bright);
            margin-left: 4px;
        }

        .header-tip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            line-height: 1.2;
        }

        .header-tip svg {
            width: 15px;
            height: 15px;
            color: var(--brand-bright);
        }

        .header-external {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            color: var(--text-main);
        }

        .menu-toggle svg {
            width: 22px;
            height: 22px;
        }

        .nav-wrap {
            border-top: 1px solid transparent;
            transition: border-color .3s;
            scrollbar-width: none;
        }

        .nav-wrap::-webkit-scrollbar {
            display: none;
        }

        .site-header.is-scrolled .nav-wrap {
            border-top-color: rgba(255, 255, 255, 0.05);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            width: min(1280px, 100% - 48px);
            margin-inline: auto;
            min-height: 54px;
            padding: 8px 0;
            position: relative;
        }

        .main-nav .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 16px;
            min-height: 40px;
            margin: 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 999px;
            line-height: 1.2;
            border: 1px solid transparent;
            transition: color .2s, background .2s, border-color .2s, box-shadow .2s;
        }

        .main-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.06);
        }

        .main-nav .nav-link.active {
            color: var(--brand-bright);
            background: rgba(25, 167, 206, 0.1);
            border-color: rgba(103, 232, 249, 0.18);
            box-shadow: inset 0 0 20px rgba(25, 167, 206, 0.06), 0 0 12px rgba(25, 167, 206, 0.1);
            position: relative;
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 2px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--brand-bright), transparent);
            border-radius: 999px;
            opacity: 0.85;
        }

        .nav-hot {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            flex-shrink: 0;
            padding-left: 18px;
            position: relative;
        }

        .nav-hot::before {
            content: "";
            width: 1px;
            height: 20px;
            background: rgba(255, 255, 255, 0.1);
            margin-right: 6px;
        }

        .nav-hot span {
            font-size: 12px;
            color: var(--text-weak);
            padding: 5px 10px;
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 999px;
            line-height: 1;
            white-space: nowrap;
            background: rgba(255, 255, 255, 0.02);
            transition: color .2s, border-color .2s;
        }

        .nav-hot span:hover {
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.14);
        }

        @media (max-width: 1023px) {
            .menu-toggle {
                display: inline-flex;
            }

            .header-tip {
                display: none;
            }

            .nav-wrap {
                border-top: 0;
                overflow: visible;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                margin-inline: 0;
                padding: 10px 24px 18px;
                background: rgba(9, 19, 34, 0.98);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 24px 40px rgba(2, 8, 20, 0.45);
            }

            .site-header.nav-open .main-nav {
                display: flex;
            }

            .main-nav .nav-link {
                width: 100%;
                justify-content: flex-start;
                border-radius: var(--radius-md);
            }

            .main-nav .nav-link.active::after {
                display: none;
            }

            .nav-hot {
                width: 100%;
                margin-left: 0;
                padding-left: 0;
                margin-top: 10px;
                flex-wrap: wrap;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                padding-top: 12px;
            }

            .nav-hot::before {
                display: none;
            }
        }

        .section {
            padding: 84px 0;
        }

        .cat-hero {
            position: relative;
            padding: 88px 0 76px;
            background:
                radial-gradient(900px 420px at 12% -10%, rgba(25, 167, 206, 0.16), transparent 60%),
                radial-gradient(760px 360px at 92% 10%, rgba(11, 99, 197, 0.18), transparent 60%),
                linear-gradient(180deg, rgba(7, 17, 31, 0.6), rgba(7, 17, 31, 0.92)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 56px 56px;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 90%);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 46px;
            position: relative;
            z-index: 2;
            color: var(--text-sub);
            font-size: 14px;
        }

        .breadcrumb a {
            color: var(--text-weak);
            transition: color .2s;
        }

        .breadcrumb a:hover {
            color: var(--brand-bright);
        }

        .breadcrumb span {
            color: var(--text-sub);
        }

        .breadcrumb svg {
            width: 14px;
            height: 14px;
            color: rgba(255, 255, 255, 0.28);
            margin: 0 2px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--brand-bright);
            background: rgba(103, 232, 249, 0.08);
            border: 1px solid rgba(103, 232, 249, 0.14);
            border-radius: 999px;
            padding: 6px 14px;
            line-height: 1;
        }

        .hero-copy h1 {
            margin-top: 20px;
            font-size: clamp(32px, 4vw, 52px);
            line-height: 1.18;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            max-width: 680px;
        }

        .hero-sub {
            margin-top: 20px;
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 620px;
        }

        .hero-cta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }

        .hero-note {
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-weak);
            padding-left: 2px;
        }

        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 46px;
            padding: 0 22px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            transition: transform .2s, box-shadow .2s, background .2s, border-color .2s, filter .2s;
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, #19A7CE, #0B63C5);
            border: 1px solid rgba(103, 232, 249, 0.22);
            box-shadow: 0 0 20px rgba(25, 167, 206, 0.18);
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            box-shadow: 0 0 26px rgba(25, 167, 206, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px) scale(0.99);
            box-shadow: 0 0 10px rgba(25, 167, 206, 0.2);
        }

        .btn-primary svg {
            width: 17px;
            height: 17px;
            transition: transform .2s;
        }

        .btn-primary:hover svg {
            transform: translateX(3px);
        }

        .btn-ghost {
            color: var(--text-main);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            border-color: rgba(103, 232, 249, 0.35);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
            color: #fff;
        }

        .hero-art {
            position: relative;
            z-index: 3;
        }

        .hero-card {
            border-radius: var(--radius-xl);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)), rgba(16, 33, 52, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.11);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            padding: 20px;
            backdrop-filter: blur(14px);
            overflow: hidden;
        }

        .hero-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            margin-bottom: 14px;
        }

        .hero-card-top span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .hero-card-top small {
            color: var(--brand-bright);
            background: rgba(103, 232, 249, 0.1);
            border: 1px solid rgba(103, 232, 249, 0.14);
            border-radius: 999px;
            padding: 4px 10px;
            font-size: 12px;
        }

        .hero-card img {
            width: 100%;
            height: 230px;
            object-fit: cover;
            border-radius: 18px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-card-list {
            list-style: none;
            margin-top: 14px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 12px;
        }

        .hero-card-list li {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 13px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            padding: 7px 10px;
            min-height: 36px;
        }

        .hero-card-list li svg {
            width: 15px;
            height: 15px;
            color: var(--brand-bright);
        }

        @media (max-width: 1023px) {
            .cat-hero {
                padding: 56px 0 48px;
            }

            .breadcrumb {
                margin-bottom: 28px;
            }

            .hero-art {
                margin-top: 24px;
                max-width: 520px;
            }
        }

        @media (max-width: 520px) {
            .hero-card-list {
                grid-template-columns: 1fr;
            }
        }

        .service-rack {
            position: relative;
            z-index: 4;
            padding: 28px 0 24px;
            margin-top: -40px;
            border-bottom: 1px solid var(--border);
            background: var(--bg-deep);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .service-tile {
            display: block;
            padding: 18px 18px;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)), #0F1F31;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: transform .2s, border-color .2s, background .2s, box-shadow .2s;
            min-height: 120px;
            position: relative;
            overflow: hidden;
        }

        .service-tile::after {
            content: "";
            position: absolute;
            top: -36px;
            right: -36px;
            width: 100px;
            height: 100px;
            background: radial-gradient(circle, rgba(25, 167, 206, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .service-tile:hover {
            transform: translateY(-3px);
            border-color: rgba(103, 232, 249, 0.2);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01)), #11243A;
            box-shadow: 0 12px 30px rgba(2, 8, 20, 0.3);
        }

        .service-tile strong {
            display: block;
            color: #fff;
            font-size: 16px;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }

        .service-tile span {
            display: block;
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.5;
            position: relative;
            z-index: 1;
        }

        .service-tile em {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 9px;
            background: rgba(25, 167, 206, 0.12);
            color: var(--brand-bright);
            border: 1px solid rgba(103, 232, 249, 0.16);
            font-style: normal;
            font-size: 12px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .service-tile.is-current {
            background: rgba(25, 167, 206, 0.06);
            border-color: rgba(103, 232, 249, 0.14);
            box-shadow: inset 0 0 20px rgba(25, 167, 206, 0.03);
        }

        @media (max-width: 900px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 540px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
            .service-tile {
                min-height: 0;
            }
        }

        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-size: clamp(24px, 3vw, 34px);
            line-height: 1.3;
            font-weight: 700;
            color: #fff;
            margin-top: 14px;
        }

        .section-heading p {
            margin-top: 12px;
            max-width: 720px;
            color: var(--text-sub);
            font-size: 15px;
        }

        .qa-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
            align-items: start;
        }

        .qa-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .qa-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)), rgba(16, 33, 52, 0.42);
            transition: border-color .25s, background .25s;
            overflow: hidden;
        }

        .qa-item:hover {
            border-color: rgba(255, 255, 255, 0.13);
        }

        .qa-item.open {
            border-color: rgba(103, 232, 249, 0.2);
            background: linear-gradient(180deg, rgba(25, 167, 206, 0.05), transparent), rgba(16, 33, 52, 0.68);
        }

        .qa-question {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            text-align: left;
            padding: 18px 18px;
            min-height: 60px;
            color: var(--text-main);
        }

        .q-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            border-radius: 11px;
            background: rgba(25, 167, 206, 0.1);
            border: 1px solid rgba(103, 232, 249, 0.14);
            color: var(--brand-bright);
            font-size: 13px;
            font-weight: 600;
        }

        .qa-question-text {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.45;
        }

        .qa-chev {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            color: var(--text-weak);
            transition: transform .3s, color .2s, background .2s;
        }

        .qa-chev svg {
            width: 15px;
            height: 15px;
        }

        .qa-item.open .qa-chev {
            transform: rotate(180deg);
            color: var(--brand-bright);
            background: rgba(25, 167, 206, 0.08);
        }

        .qa-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .35s ease;
        }

        .qa-answer-inner {
            overflow: hidden;
            min-height: 0;
        }

        .qa-answer-inner p {
            padding: 0 20px 20px 66px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            border-top: 0;
        }

        .qa-item.open .qa-answer {
            grid-template-rows: 1fr;
        }

        .qa-aside {
            position: sticky;
            top: 148px;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .side-note {
            border-radius: var(--radius-xl);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01)), rgba(16, 33, 52, 0.62);
            border: 1px solid var(--border-strong);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            padding: 24px;
        }

        .side-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand-bright);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        .side-label svg {
            width: 18px;
            height: 18px;
        }

        .side-note h2 {
            font-size: 22px;
            color: #fff;
            margin: 14px 0 10px;
            line-height: 1.4;
            font-weight: 700;
        }

        .side-note>p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .process-list {
            list-style: none;
            margin-top: 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .process-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 12px;
        }

        .process-list li b {
            flex: 1;
            font-weight: 600;
            color: var(--text-main);
            font-size: 14px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }

        .process-list li b span {
            color: var(--text-weak);
            font-size: 12px;
            text-align: right;
            font-weight: 400;
        }

        .process-list li i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 7px;
            background: rgba(244, 185, 66, 0.12);
            border: 1px solid rgba(244, 185, 66, 0.16);
            color: var(--accent);
            font-style: normal;
            font-size: 12px;
            font-weight: 600;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .related-box {
            border-radius: var(--radius-lg);
            background: rgba(12, 25, 42, 0.7);
            border: 1px solid var(--border);
            padding: 20px;
        }

        .related-box-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .related-box a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 14px;
            color: var(--text-sub);
            padding: 9px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: color .2s;
        }

        .related-box a:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .related-box a:hover {
            color: var(--brand-bright);
        }

        .related-box a svg {
            width: 15px;
            height: 15px;
            color: rgba(255, 255, 255, 0.24);
        }

        @media (max-width: 1023px) {
            .qa-layout {
                grid-template-columns: 1fr;
            }

            .qa-aside {
                position: static;
                margin-top: 8px;
            }
        }

        @media (max-width: 560px) {
            .qa-answer-inner p {
                padding: 2px 18px 20px 18px;
            }

            .qa-question {
                padding: 14px;
                align-items: flex-start;
            }

            .q-no {
                margin-top: 2px;
            }

            .qa-question-text {
                font-size: 14px;
            }
        }

        .check-steps-section {
            background: linear-gradient(180deg, var(--bg-deep), #091726, var(--bg-deep));
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .check-grid {
            display: grid;
            grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
            gap: 60px;
            align-items: center;
        }

        .check-visual {
            position: relative;
        }

        .check-visual img {
            width: 100%;
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255, 255, 255, 0.09);
            object-fit: cover;
            aspect-ratio: 4 / 3;
            box-shadow: var(--shadow-card);
        }

        .check-float {
            position: absolute;
            left: -14px;
            bottom: 22px;
            background: rgba(12, 25, 42, 0.9);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-strong);
            border-radius: 16px;
            padding: 12px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: var(--shadow-card);
            animation: floatHint 3s ease-in-out infinite;
        }

        .check-float svg {
            width: 22px;
            height: 22px;
            color: var(--brand-bright);
        }

        .check-float span {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.4;
        }

        @keyframes floatHint {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }

        .check-copy-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-top: 30px;
        }

        .check-node {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 16px;
            transition: border-color .2s, transform .2s;
        }

        .check-node:hover {
            border-color: rgba(103, 232, 249, 0.16);
            transform: translateX(4px);
        }

        .check-node-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 13px;
            background: linear-gradient(135deg, rgba(25, 167, 206, 0.14), rgba(11, 99, 197, 0.10));
            border: 1px solid rgba(103, 232, 249, 0.18);
            color: var(--brand-bright);
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .check-node-text {
            flex: 1;
        }

        .check-node-text strong {
            color: #fff;
            font-size: 16px;
            line-height: 1.4;
            display: block;
        }

        .check-node-text p {
            margin-top: 5px;
            font-size: 14px;
            color: var(--text-sub);
        }

        @media (max-width: 900px) {
            .check-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 36px;
        }

        .tip-cell {
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent), rgba(12, 25, 42, 0.55);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            overflow: hidden;
            transition: transform .2s, border-color .2s;
        }

        .tip-cell:hover {
            transform: translateY(-3px);
            border-color: rgba(255, 255, 255, 0.14);
        }

        .tip-icon {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(25, 167, 206, 0.1);
            border: 1px solid rgba(103, 232, 249, 0.14);
            color: var(--brand-bright);
            margin-bottom: 16px;
        }

        .tip-icon.warn {
            background: rgba(244, 185, 66, 0.08);
            border-color: rgba(244, 185, 66, 0.16);
            color: var(--accent);
        }

        .tip-icon svg {
            width: 20px;
            height: 20px;
        }

        .tip-cell h3 {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .tip-cell p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        @media (max-width: 900px) {
            .tips-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 600px) {
            .tips-grid {
                grid-template-columns: 1fr;
            }
        }

        .cta-final {
            position: relative;
            border-top: 1px solid var(--border);
            background:
                radial-gradient(880px 300px at 14% 24%, rgba(25, 167, 206, 0.14), transparent 60%),
                linear-gradient(180deg, var(--bg-deep), rgba(11, 99, 197, 0.14), var(--bg-deep)),
                url('/assets/images/backpic/back-3.png') center 70% / cover no-repeat;
            overflow: hidden;
            padding: 84px 0;
        }

        .cta-panel {
            border-radius: var(--radius-xl);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)), rgba(9, 20, 35, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.11);
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-panel h2 {
            font-size: clamp(21px, 2.6vw, 30px);
            font-weight: 700;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .cta-panel p {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 680px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        @media (max-width: 760px) {
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-ghost {
                width: 100%;
            }
        }

        .site-footer {
            background: #060D17;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 26px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.9fr 1fr 1.1fr;
            gap: 34px;
            margin-bottom: 36px;
        }

        .footer-brandtext {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .footer-brandtext em {
            font-style: normal;
            color: var(--brand-bright);
        }

        .footer-desc {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .footer-tags span {
            font-size: 12px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 999px;
            padding: 4px 10px;
            line-height: 1.4;
        }

        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.5;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: var(--brand-bright);
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact p {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.5;
        }

        .footer-contact svg {
            width: 18px;
            height: 18px;
            color: var(--text-weak);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, 0.46);
            font-size: 12px;
        }

        @media (max-width: 1023px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 26px;
            }
        }

        @media (max-width: 540px) {
            .footer-top {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }