/* roulang page: index */
:root {
        --brand: #2f6bff;
        --brand-dark: #1952d6;
        --brand-darker: #123f9b;
        --brand-soft: #ebf2ff;
        --teal: #1f9e8f;
        --teal-soft: #e6f7f4;
        --amber: #f0a64a;
        --amber-soft: #fff4e3;
        --bg: #f6f9fc;
        --bg-muted: #eef2f7;
        --surface: #ffffff;
        --line: #d9e2ec;
        --title: #162b3a;
        --text: #2d4255;
        --secondary: #416174;
        --muted: #7b8f9e;
        --radius: 14px;
        --radius-sm: 10px;
        --radius-lg: 20px;
        --shadow-sm: 0 2px 10px rgba(20, 50, 80, .05);
        --shadow: 0 4px 20px rgba(20, 50, 80, .06);
        --shadow-hover: 0 12px 28px rgba(20, 50, 80, .12);
        --container: 1200px;
        --font: "PingFang SC", "Microsoft YaHei", "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);
        color: var(--text);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: inherit;
        text-decoration: none;
    }
    img {
        display: block;
        max-width: 100%;
    }
    ul,
    ol {
        list-style: none;
    }
    button,
    input {
        font-family: inherit;
    }
    button {
        cursor: pointer;
        border: none;
        background: none;
    }
    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }
    .section {
        padding: 80px 0;
    }
    .section-head {
        max-width: 760px;
        margin-bottom: 40px;
    }
    .section-head h2 {
        font-size: 30px;
        color: var(--title);
        font-weight: 800;
        letter-spacing: -.3px;
        margin: 8px 0 12px;
    }
    .section-head p {
        color: var(--secondary);
        max-width: 680px;
    }
    .kicker {
        display: inline-block;
        font-weight: 800;
        letter-spacing: .1em;
        font-size: 13px;
        color: var(--brand);
        background: var(--brand-soft);
        padding: 4px 12px;
        border-radius: 999px;
    }
    .split-head {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 20px;
    }

    /* Header */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 80;
        background: rgba(255, 255, 255, .92);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--line);
    }
    .header-container {
        display: flex;
        align-items: center;
        gap: 16px;
        min-height: 70px;
        flex-wrap: wrap;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-weight: 800;
        color: var(--title);
        white-space: nowrap;
        font-size: 19px;
        letter-spacing: .2px;
    }
    .logo-mark {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        background: var(--brand);
        color: #fff;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
        box-shadow: 0 6px 14px rgba(47, 107, 255, .24);
    }
    .logo-text em {
        font-style: normal;
        color: var(--brand);
    }
    .header-nav ul {
        display: flex;
        gap: 4px;
        align-items: center;
    }
    .header-nav a {
        display: inline-flex;
        align-items: center;
        padding: 8px 15px;
        border-radius: 999px;
        font-weight: 700;
        color: var(--secondary);
        position: relative;
        transition: .2s;
    }
    .header-nav a:hover {
        color: var(--brand);
        background: var(--brand-soft);
    }
    .header-nav a.active {
        color: var(--brand);
        background: var(--brand-soft);
    }
    .header-nav a.active::after {
        content: "";
        position: absolute;
        left: 15px;
        right: 15px;
        bottom: 3px;
        height: 3px;
        border-radius: 99px;
        background: var(--brand);
    }
    .header-search {
        flex: 1;
        min-width: 260px;
    }
    .search-bar {
        display: flex;
        align-items: center;
        height: 44px;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 999px;
        padding: 0 6px 0 16px;
        transition: .2s;
        box-shadow: var(--shadow-sm);
    }
    .search-bar:focus-within {
        border-color: var(--brand);
        box-shadow: 0 0 0 4px rgba(47, 107, 255, .12);
    }
    .search-bar > svg {
        color: var(--muted);
        margin-right: 8px;
        flex: 0 0 auto;
    }
    .search-bar input {
        border: none;
        outline: none;
        flex: 1;
        min-width: 60px;
        background: transparent;
        color: var(--text);
        font-size: 14px;
    }
    .search-bar input::placeholder {
        color: #9aabba;
    }
    .search-kbd {
        color: var(--muted);
        background: var(--bg-muted);
        padding: 2px 7px;
        border-radius: 6px;
        font-size: 12px;
        margin: 0 8px;
        font-family: ui-monospace, monospace;
    }
    .search-btn {
        height: 32px;
        padding: 0 15px;
        border-radius: 999px;
        background: var(--brand);
        color: #fff;
        font-weight: 700;
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        transition: .2s;
    }
    .search-btn:hover {
        background: var(--brand-dark);
    }
    .nav-trigger {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        border: 1px solid var(--line);
        background: var(--surface);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
    }
    .nav-trigger span {
        display: block;
        width: 18px;
        height: 2px;
        background: var(--title);
        transition: .3s;
    }
    .nav-trigger[aria-expanded="true"] span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 3px);
    }
    .nav-trigger[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }
    .nav-trigger[aria-expanded="true"] span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -3px);
    }
    .header-action {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--brand);
        font-weight: 700;
        white-space: nowrap;
        padding: 0 6px;
    }
    .header-action:hover {
        color: var(--brand-dark);
    }

    /* Hero */
    .hero {
        position: relative;
        overflow: hidden;
        padding: 78px 0 88px;
        background: linear-gradient(135deg, #f5f9ff 0%, #ffffff 50%, #eef6fc 100%);
    }
    .hero-backdrop {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: .12;
        pointer-events: none;
    }
    .hero-inner {
        position: relative;
        display: grid;
        grid-template-columns: 1.05fr .95fr;
        gap: 48px;
        align-items: center;
    }
    .hero-copy {
        max-width: 600px;
    }
    .hero-eyebrow {
        display: inline-block;
        background: var(--teal-soft);
        color: var(--teal);
        font-weight: 800;
        padding: 5px 14px;
        border-radius: 999px;
        font-size: 13px;
        letter-spacing: .04em;
        margin-bottom: 18px;
    }
    .hero h1 {
        font-size: 42px;
        line-height: 1.35;
        font-weight: 800;
        color: var(--title);
        letter-spacing: -.4px;
        margin-bottom: 16px;
    }
    .hero-highlight {
        color: var(--brand);
    }
    .hero-sub {
        font-size: 17px;
        color: var(--secondary);
        line-height: 1.8;
        margin-bottom: 30px;
        max-width: 540px;
    }
    .hero-search {
        display: flex;
        align-items: center;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 20px;
        box-shadow: var(--shadow);
        height: 60px;
        padding: 0 8px 0 20px;
        max-width: 560px;
        transition: .2s;
        scroll-margin-top: 140px;
    }
    .hero-search:focus-within {
        box-shadow: 0 0 0 5px rgba(47, 107, 255, .12);
        border-color: var(--brand);
    }
    .hero-search > svg {
        color: var(--muted);
        margin-right: 12px;
    }
    .hero-search input {
        border: none;
        outline: none;
        flex: 1;
        min-width: 50px;
        font-size: 16px;
        color: var(--text);
        background: transparent;
    }
    .hero-search input::placeholder {
        color: #9aabba;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: 999px;
        font-weight: 800;
        transition: all .2s;
    }
    .btn-hero {
        height: 44px;
        padding: 0 24px;
        background: var(--brand);
        color: #fff;
    }
    .btn-hero:hover {
        background: var(--brand-dark);
        transform: translateY(-1px);
        box-shadow: 0 10px 18px rgba(47, 107, 255, .25);
    }
    .hero-actions {
        display: flex;
        align-items: center;
        gap: 16px;
        margin-top: 22px;
        flex-wrap: wrap;
    }
    .hero-btn-secondary {
        padding: 10px 20px;
        border-radius: 999px;
        border: 1px solid var(--line);
        background: #fff;
        font-weight: 700;
        color: var(--secondary);
        transition: .2s;
    }
    .hero-btn-secondary:hover {
        border-color: var(--brand);
        color: var(--brand);
        box-shadow: var(--shadow-sm);
    }
    .hero-btn-link {
        color: var(--brand);
        font-weight: 700;
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 8px 4px;
    }
    .hero-btn-link span {
        transition: transform .2s;
    }
    .hero-btn-link:hover span {
        transform: translateX(4px);
    }
    .hot-searches {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
        margin-top: 28px;
    }
    .hot-searches .hs-label {
        color: var(--muted);
        font-weight: 700;
        font-size: 13px;
        margin-right: 4px;
    }
    .hot-tag {
        display: inline-flex;
        align-items: center;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 999px;
        color: var(--secondary);
        font-size: 13px;
        font-weight: 600;
        padding: 5px 13px;
        transition: .2s;
    }
    .hot-tag:hover {
        color: var(--brand);
        background: var(--brand-soft);
        border-color: transparent;
    }
    .hero-stage {
        position: relative;
        min-height: 430px;
    }
    .stage-main {
        width: 330px;
        margin-left: auto;
        margin-top: 40px;
        border-radius: 26px;
        overflow: hidden;
        background: #fff;
        box-shadow: var(--shadow-hover);
        transform: rotate(2deg);
        transition: .4s;
    }
    .stage-main img {
        width: 100%;
        height: 350px;
        object-fit: cover;
    }
    .stage-secondary {
        position: absolute;
        left: 0;
        bottom: 10px;
        width: 210px;
        border-radius: 20px;
        overflow: hidden;
        border: 6px solid #fff;
        box-shadow: var(--shadow-hover);
        transform: rotate(-5deg);
    }
    .stage-secondary img {
        width: 100%;
        height: 150px;
        object-fit: cover;
    }
    .stage-float {
        position: absolute;
        right: 10px;
        top: 10px;
        background: rgba(255, 255, 255, .92);
        border-radius: 999px;
        padding: 10px 16px;
        box-shadow: var(--shadow);
        color: var(--title);
        font-weight: 700;
        font-size: 13px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .stage-float .dot {
        width: 9px;
        height: 9px;
        background: #23c6a7;
        border-radius: 99px;
        box-shadow: 0 0 0 4px rgba(35, 198, 167, .18);
    }

    /* Category Cards */
    .category-section {
        background: var(--surface);
    }
    .category-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    .category-card {
        display: flex;
        align-items: stretch;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 22px;
        overflow: hidden;
        transition: all .25s;
        box-shadow: var(--shadow-sm);
    }
    .category-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(47, 107, 255, .28);
    }
    .category-cover {
        width: 42%;
        overflow: hidden;
        min-height: 230px;
        background: var(--bg-muted);
        flex: 0 0 42%;
    }
    .category-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .4s;
    }
    .category-card:hover .category-cover img {
        transform: scale(1.03);
    }
    .category-content {
        padding: 28px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .category-top {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 12px;
    }
    .chip-icon {
        width: 32px;
        height: 32px;
        border-radius: 9px;
        background: var(--brand-soft);
        color: var(--brand);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        font-weight: 800;
    }
    .category-content h3 {
        font-size: 24px;
        color: var(--title);
        margin-bottom: 12px;
        font-weight: 800;
    }
    .category-content p {
        color: var(--secondary);
        font-size: 15px;
        line-height: 1.8;
        margin-bottom: 18px;
    }
    .category-more {
        display: inline-flex;
        align-items: center;
        color: var(--brand);
        font-weight: 800;
        gap: 8px;
        font-size: 15px;
    }
    .category-more span:last-child {
        transition: transform .2s;
    }
    .category-card:hover .category-more span:last-child {
        transform: translateX(4px);
    }

    /* Latest CMS */
    .latest-wrap {
        background: var(--bg);
        border-radius: 24px;
        padding: 34px;
        border: 1px solid var(--line);
    }
    .latest-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px;
    }
    .news-card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        padding: 16px;
        display: flex;
        gap: 16px;
        transition: .25s;
    }
    .news-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
        border-color: rgba(47, 107, 255, .24);
    }
    .news-thumb {
        flex: 0 0 116px;
        width: 116px;
        height: 118px;
        border-radius: 12px;
        overflow: hidden;
        background: var(--bg-muted);
    }
    .news-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .news-body {
        flex: 1;
        min-width: 0;
        display: flex;
        flex-direction: column;
    }
    .news-meta-top {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 7px;
    }
    .chip {
        display: inline-flex;
        align-items: center;
        padding: 2px 10px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 800;
    }
    .chip-blue {
        background: var(--brand-soft);
        color: var(--brand);
    }
    .chip-teal {
        background: var(--teal-soft);
        color: var(--teal);
    }
    .chip-amber {
        background: var(--amber-soft);
        color: #b06a21;
    }
    .news-meta-top time {
        font-size: 12px;
        color: var(--muted);
    }
    .news-body h3 {
        font-size: 16px;
        color: var(--title);
        font-weight: 800;
        line-height: 1.5;
        overflow: hidden;
    }
    .news-body h3 a {
        transition: color .2s;
    }
    .news-body h3 a:hover {
        color: var(--brand);
    }
    .news-body p {
        font-size: 13px;
        color: var(--secondary);
        margin-top: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.6;
        flex: 1;
    }
    .news-more {
        color: var(--brand);
        font-size: 13px;
        font-weight: 800;
        margin-top: 8px;
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .news-more span {
        transition: transform .2s;
    }
    .news-card:hover .news-more span {
        transform: translateX(4px);
    }
    .empty-state {
        grid-column: 1 / -1;
        padding: 60px 20px;
        text-align: center;
        color: var(--muted);
        font-size: 16px;
        font-weight: 600;
    }
    .empty-state::before {
        content: "";
        display: block;
        width: 54px;
        height: 54px;
        margin: 0 auto 18px;
        border-radius: 20px;
        background: var(--bg-muted) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 24 24' fill='none' stroke='%237b8f9e' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M14 3H6a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7z'/%3E%3Cpath d='M14 3v4h4'/%3E%3Cpath d='M9 13h6M9 17h6'/%3E%3C/svg%3E") center no-repeat;
        background-size: 26px;
    }

    /* Insight / Tabs */
    .insight-section {
        background: var(--surface);
    }
    .insights-panel {
        border: 1px solid var(--line);
        background: var(--bg);
        border-radius: 24px;
        padding: 30px;
    }
    .tab-nav {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-bottom: 24px;
    }
    .tab-btn {
        padding: 9px 20px;
        border-radius: 999px;
        font-weight: 800;
        border: 1px solid var(--line);
        background: #fff;
        color: var(--secondary);
        transition: .2s;
    }
    .tab-btn:hover {
        border-color: var(--brand);
        color: var(--brand);
    }
    .tab-btn.active {
        background: var(--brand);
        color: #fff;
        border-color: var(--brand);
        box-shadow: 0 8px 18px rgba(47, 107, 255, .2);
    }
    .tab-pane {
        display: none;
    }
    .tab-pane.active {
        display: block;
        animation: fadeIn .3s ease;
    }
    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(6px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .insight-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    .insight-card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: .25s;
        display: flex;
        flex-direction: column;
    }
    .insight-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
    }
    .insight-card img {
        width: 100%;
        height: 140px;
        object-fit: cover;
        background: var(--bg-muted);
    }
    .insight-content {
        padding: 18px 20px 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .insight-content .chip {
        align-self: flex-start;
        margin-bottom: 10px;
    }
    .insight-content h3 {
        font-size: 17px;
        color: var(--title);
        font-weight: 800;
        line-height: 1.5;
        margin-bottom: 8px;
    }
    .insight-content p {
        color: var(--secondary);
        font-size: 14px;
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }
    .card-foot {
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: var(--muted);
        font-size: 13px;
        margin-top: 14px;
    }
    .card-foot .arrow {
        color: var(--brand);
        font-weight: 800;
        font-size: 18px;
        transition: .2s;
    }
    .insight-card:hover .card-foot .arrow {
        transform: translateX(4px);
    }

    /* Value strip */
    .value-strip {
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        background: #fbfdff;
        padding: 56px 0;
    }
    .value-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .value-item {
        padding: 22px;
        background: #fff;
        border-radius: 18px;
        border: 1px solid var(--line);
        transition: .2s;
    }
    .value-item:hover {
        box-shadow: var(--shadow-hover);
        border-color: rgba(47, 107, 255, .18);
        transform: translateY(-3px);
    }
    .value-icon {
        width: 44px;
        height: 44px;
        border-radius: 14px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        background: var(--brand-soft);
        color: var(--brand);
        margin-bottom: 12px;
    }
    .value-item h3 {
        font-size: 17px;
        color: var(--title);
        margin-bottom: 6px;
        font-weight: 800;
    }
    .value-item p {
        color: var(--secondary);
        font-size: 14px;
        line-height: 1.7;
    }

    /* FAQ */
    .faq-layout {
        display: grid;
        grid-template-columns: .75fr 1.45fr;
        gap: 50px;
    }
    .faq-intro h2 {
        font-size: 30px;
        color: var(--title);
        font-weight: 800;
        margin-top: 12px;
        line-height: 1.4;
    }
    .faq-intro p {
        color: var(--secondary);
        margin: 14px 0 20px;
    }
    .text-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--brand);
        font-weight: 800;
    }
    .text-link span {
        transition: transform .2s;
    }
    .text-link:hover span {
        transform: translateX(4px);
    }
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .faq-item {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 16px;
        overflow: hidden;
        transition: .2s;
    }
    .faq-item[open] {
        border-color: rgba(47, 107, 255, .18);
        box-shadow: var(--shadow-sm);
    }
    .faq-summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        cursor: pointer;
        color: var(--title);
        font-weight: 800;
        padding: 18px 22px;
        transition: .2s;
        font-size: 16px;
    }
    .faq-summary::-webkit-details-marker {
        display: none;
    }
    .faq-summary:hover {
        background: var(--brand-soft);
    }
    .faq-icon {
        width: 26px;
        height: 26px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--brand-soft);
        color: var(--brand);
        font-weight: 800;
        font-size: 16px;
        flex: 0 0 auto;
        transition: transform .25s;
    }
    .faq-item[open] .faq-icon {
        transform: rotate(45deg);
        background: var(--brand);
        color: #fff;
    }
    .faq-answer {
        padding: 0 22px 20px;
        color: var(--secondary);
        font-size: 15px;
        line-height: 1.85;
    }

    /* CTA */
    .cta-panel-section {
        padding: 20px 0 80px;
    }
    .cta-panel {
        background: linear-gradient(135deg, #122c4e 0%, #0e2139 100%);
        border-radius: 28px;
        padding: 54px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 28px;
        color: #fff;
        overflow: hidden;
        position: relative;
    }
    .cta-panel::after {
        content: "";
        position: absolute;
        right: -80px;
        top: -80px;
        width: 260px;
        height: 260px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(47, 107, 255, .45), transparent 70%);
    }
    .cta-copy h2 {
        font-size: 28px;
        font-weight: 800;
        line-height: 1.5;
        margin-bottom: 8px;
    }
    .cta-copy p {
        color: rgba(255, 255, 255, .72);
        max-width: 560px;
        margin-bottom: 24px;
        line-height: 1.8;
        font-size: 15px;
    }
    .cta-buttons {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }
    .btn-light {
        background: #fff;
        color: #0e2139;
        padding: 12px 26px;
        border-radius: 999px;
        font-weight: 800;
    }
    .btn-light:hover {
        background: var(--brand-soft);
        transform: translateY(-2px);
        box-shadow: 0 10px 18px rgba(0, 0, 0, .2);
    }
    .btn-outline-light {
        border: 1px solid rgba(255, 255, 255, .5);
        color: #fff;
        padding: 12px 26px;
        border-radius: 999px;
        font-weight: 800;
        transition: .2s;
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, .12);
        transform: translateY(-2px);
    }

    /* Footer */
    .site-footer {
        background: #0b1823;
        color: #c4d2de;
        margin-top: 20px;
        padding-top: 64px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 44px;
        padding-bottom: 44px;
    }
    .footer-logo {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: #fff;
        font-size: 20px;
        font-weight: 800;
        margin-bottom: 16px;
    }
    .footer-logo em {
        color: #5e93ff;
        font-style: normal;
    }
    .footer-brand p {
        color: #93a9b8;
        font-size: 14px;
        max-width: 360px;
        line-height: 1.8;
        margin-top: 10px;
    }
    .footer-col h4 {
        color: #e7eef4;
        font-size: 15px;
        letter-spacing: .05em;
        margin-bottom: 16px;
    }
    .footer-col ul {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }
    .footer-col a {
        color: #a4b7c6;
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        padding: 6px 0;
        transition: .2s;
    }
    .footer-col a:hover {
        color: #7eb0ff;
        padding-left: 4px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, .08);
        padding: 22px 0;
        color: #6f8799;
        font-size: 13px;
    }
    .footer-bottom-inner {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 10px;
    }

    @media (max-width: 1023px) {
        .header-nav {
            display: none;
            position: absolute;
            top: 68px;
            left: 20px;
            right: 20px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            box-shadow: var(--shadow-hover);
            padding: 12px;
            z-index: 90;
        }
        .header-nav.open {
            display: block;
        }
        .header-nav ul {
            flex-direction: column;
            align-items: stretch;
        }
        .header-nav a {
            padding: 12px 16px;
            border-radius: 12px;
        }
        .header-nav a.active::after {
            display: none;
        }
        .nav-trigger {
            display: inline-flex;
        }
        .header-action {
            display: none;
        }
        .hero-inner {
            grid-template-columns: 1fr;
        }
        .hero-stage {
            display: none;
        }
        .category-grid {
            grid-template-columns: 1fr;
        }
        .latest-grid {
            grid-template-columns: 1fr;
        }
        .insight-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .value-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .faq-layout {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .cta-panel {
            flex-direction: column;
            align-items: flex-start;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .footer-brand {
            grid-column: 1 / -1;
        }
    }
    @media (max-width: 768px) {
        .header-container {
            min-height: 60px;
            gap: 8px;
        }
        .logo {
            font-size: 17px;
        }
        .header-search {
            order: 8;
            flex: 1 1 100%;
        }
        .search-bar {
            height: 44px;
        }
        .section {
            padding: 60px 0;
        }
        .split-head {
            flex-direction: column;
            align-items: flex-start;
        }
        .section-head h2 {
            font-size: 24px;
        }
        .hero {
            padding: 56px 0 60px;
        }
        .hero h1 {
            font-size: 30px;
        }
        .hero-sub {
            font-size: 15px;
        }
        .hero-search {
            height: 54px;
            border-radius: 16px;
            padding-left: 14px;
        }
        .hero-search input {
            font-size: 15px;
        }
        .btn-hero {
            height: 40px;
            padding: 0 18px;
        }
        .latest-wrap {
            padding: 20px;
        }
        .news-card {
            flex-direction: column;
        }
        .news-thumb {
            width: 100%;
            height: 160px;
            flex-basis: auto;
        }
        .insight-grid {
            grid-template-columns: 1fr;
        }
        .value-grid {
            grid-template-columns: 1fr;
        }
        .cta-panel {
            padding: 34px 24px;
        }
        .cta-copy h2 {
            font-size: 24px;
        }
        .cta-buttons {
            flex-direction: column;
            width: 100%;
        }
        .cta-buttons a {
            justify-content: center;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-brand {
            grid-column: auto;
        }
        .footer-bottom-inner {
            flex-direction: column;
        }
    }
    @media (max-width: 480px) {
        .container {
            padding: 0 16px;
        }
        .search-kbd {
            display: none;
        }
        .search-btn {
            padding: 0 12px;
        }
        .hero-search input {
            min-width: 0;
        }
        .category-cover {
            min-height: 180px;
        }
        .category-content {
            padding: 20px;
        }
    }

/* roulang page: category1 */
:root{
        --primary:#2472c9;
        --primary-deep:#1c5fb5;
        --primary-soft:#eaf3fc;
        --primary-light:rgba(36,114,201,.12);
        --teal:#0e8f7a;
        --teal-soft:#e1f6f1;
        --amber:#c78e2f;
        --amber-soft:#fdf3df;
        --bg:#f6f9fc;
        --surface:#ffffff;
        --section-alt:#eef4f9;
        --ink:#162b3a;
        --text:#416174;
        --muted:#7b8f9e;
        --line:#d9e2ec;
        --border:#dfeaf2;
        --radius-md:12px;
        --radius-lg:16px;
        --radius-xl:20px;
        --shadow-sm:0 4px 20px rgba(20,50,80,.06);
        --shadow-lg:0 12px 28px rgba(20,50,80,.12);
        --container:1240px;
        --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    }

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

    html{
        scroll-behavior:smooth;
    }

    body{
        margin:0;
        font-family:var(--font);
        font-size:16px;
        line-height:1.75;
        background:var(--bg);
        color:var(--ink);
        -webkit-font-smoothing:antialiased;
    }

    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;
    }

    :focus-visible{
        outline:3px solid rgba(36,114,201,.35);
        outline-offset:3px;
        border-radius:6px;
    }

    ::placeholder{
        color:#9aacbb;
    }

    .container{
        width:min(var(--container), 100% - 32px);
        margin-inline:auto;
    }

    .btn{
        display:inline-flex;
        align-items:center;
        justify-content:center;
        gap:8px;
        min-height:46px;
        padding:0 24px;
        border-radius:999px;
        font-weight:700;
        font-size:15px;
        line-height:1;
        border:none;
        cursor:pointer;
        transition:all .22s ease;
        white-space:nowrap;
    }

    .btn svg{
        width:17px;
        height:17px;
    }

    .btn-primary{
        background:var(--primary);
        color:#fff;
        box-shadow:0 8px 18px rgba(36,114,201,.25);
    }

    .btn-primary:hover{
        background:var(--primary-deep);
        transform:translateY(-2px);
        box-shadow:0 12px 24px rgba(36,114,201,.3);
    }

    .btn-primary:active{
        transform:translateY(0);
        box-shadow:0 6px 14px rgba(36,114,201,.2);
    }

    .btn-secondary{
        background:var(--surface);
        color:var(--primary-deep);
        border:1px solid #c4d6ea;
    }

    .btn-secondary:hover{
        border-color:var(--primary);
        background:var(--primary-soft);
        transform:translateY(-2px);
    }

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

    .section{
        padding:80px 0;
    }

    .section-alt{
        background:var(--section-alt);
    }

    .sec-head{
        display:flex;
        align-items:flex-end;
        justify-content:space-between;
        gap:30px;
        margin-bottom:34px;
    }

    .sec-head-left .eyebrow{
        display:inline-block;
        color:var(--primary);
        font-weight:700;
        font-size:13px;
        letter-spacing:.08em;
        background:var(--primary-light);
        padding:4px 12px;
        border-radius:999px;
        margin-bottom:12px;
    }

    .sec-head h2{
        font-size:30px;
        line-height:1.3;
        color:var(--ink);
        letter-spacing:-.01em;
        font-weight:800;
    }

    .sec-head p{
        font-size:15px;
        color:var(--text);
        max-width:620px;
    }

    .text-link{
        display:inline-flex;
        align-items:center;
        gap:6px;
        color:var(--primary-deep);
        font-weight:700;
        font-size:14px;
        transition:gap .22s ease;
    }

    .text-link:hover{
        gap:10px;
        color:var(--primary);
    }

    .site-header{
        position:sticky;
        top:0;
        z-index:100;
        background:rgba(255,255,255,.92);
        backdrop-filter:blur(14px);
        -webkit-backdrop-filter:blur(14px);
        border-bottom:1px solid #e3eaf1;
    }

    .header-container{
        display:flex;
        align-items:center;
        gap:18px;
        min-height:72px;
        position:relative;
    }

    .logo{
        display:inline-flex;
        align-items:center;
        gap:10px;
        flex-shrink:0;
    }

    .logo-mark{
        width:36px;
        height:36px;
        display:grid;
        place-items:center;
        border-radius:11px;
        background:var(--primary);
        color:#fff;
        box-shadow:0 6px 14px rgba(36,114,201,.22);
    }

    .logo-text{
        font-size:18px;
        font-weight:800;
        color:var(--ink);
        letter-spacing:-.02em;
        white-space:nowrap;
    }

    .logo-text em{
        font-style:normal;
        color:var(--primary);
        margin-left:4px;
    }

    .header-nav{
        margin-left:12px;
    }

    .header-nav ul{
        display:flex;
        align-items:center;
        gap:26px;
    }

    .header-nav a{
        display:block;
        position:relative;
        font-size:15px;
        font-weight:600;
        color:var(--text);
        padding:8px 0;
        transition:color .2s ease;
    }

    .header-nav a::after{
        content:"";
        position:absolute;
        left:0;
        right:0;
        bottom:-1px;
        height:3px;
        border-radius:99px;
        background:var(--primary);
        transform:scaleX(0);
        transform-origin:center;
        transition:transform .24s ease;
    }

    .header-nav a:hover{
        color:var(--primary-deep);
    }

    .header-nav a.active{
        color:var(--primary-deep);
        font-weight:800;
    }

    .header-nav a.active::after{
        transform:scaleX(1);
    }

    .header-search{
        flex:1;
        max-width:520px;
        margin-left:auto;
    }

    .search-bar{
        display:flex;
        align-items:center;
        gap:8px;
        background:#fff;
        border:1px solid var(--border);
        border-radius:999px;
        padding:4px 4px 4px 18px;
        min-height:46px;
        transition:border-color .2s, box-shadow .2s;
    }

    .search-bar:focus-within{
        border-color:var(--primary);
        box-shadow:0 0 0 4px rgba(36,114,201,.14);
    }

    .search-bar > svg{
        flex-shrink:0;
        color:#7890a4;
    }

    .search-bar input{
        flex:1;
        min-width:0;
        border:none;
        outline:none;
        background:transparent;
        font-size:14px;
        color:var(--ink);
        padding:8px 0;
    }

    .search-kbd{
        font-size:12px;
        font-weight:600;
        color:#93a5b6;
        background:#f2f6fa;
        border:1px solid #e1e9f0;
        border-radius:6px;
        padding:2px 7px;
        flex-shrink:0;
    }

    .search-btn{
        flex-shrink:0;
        background:var(--primary);
        border:none;
        color:#fff;
        min-height:36px;
        padding:0 16px;
        border-radius:999px;
        font-size:14px;
        font-weight:700;
        cursor:pointer;
        transition:background .2s ease;
    }

    .search-btn:hover{
        background:var(--primary-deep);
    }

    .nav-trigger{
        display:none;
        width:42px;
        height:42px;
        background:#fff;
        border:1px solid var(--border);
        border-radius:10px;
        cursor:pointer;
        flex-direction:column;
        align-items:center;
        justify-content:center;
        gap:5px;
        margin-left:auto;
        padding:0;
    }

    .nav-trigger span{
        width:18px;
        height:2px;
        border-radius:4px;
        background:var(--ink);
        transition:transform .2s ease, opacity .2s ease;
    }

    .nav-trigger.active span:nth-child(1){
        transform:translateY(7px) rotate(45deg);
    }

    .nav-trigger.active span:nth-child(2){
        opacity:0;
    }

    .nav-trigger.active span:nth-child(3){
        transform:translateY(-7px) rotate(-45deg);
    }

    .category-hero{
        position:relative;
        overflow:hidden;
        padding:64px 0 72px;
        background:
            radial-gradient(circle at 82% 16%, rgba(36,114,201,.09), transparent 28%),
            radial-gradient(circle at 20% 90%, rgba(14,143,122,.06), transparent 24%),
            linear-gradient(135deg, #f2f8fd 0%, #f7fbfe 64%, #ffffff 100%);
        border-bottom:1px solid #e7eef5;
    }

    .category-hero::before{
        content:"";
        position:absolute;
        inset:0;
        pointer-events:none;
        background-image:radial-gradient(rgba(36,114,201,.13) 1px, transparent 1px);
        background-size:26px 26px;
        opacity:.3;
        mask-image:linear-gradient(90deg, transparent, #000 20%, #000 70%, transparent);
    }

    .hero-grid{
        position:relative;
        display:grid;
        grid-template-columns:minmax(0, 1.1fr) minmax(0,.9fr);
        gap:64px;
        align-items:center;
    }

    .breadcrumb{
        display:flex;
        align-items:center;
        gap:8px;
        font-size:13px;
        color:var(--muted);
        margin-bottom:22px;
        flex-wrap:wrap;
    }

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

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

    .breadcrumb i{
        font-style:normal;
        color:#bccad7;
    }

    .category-hero h1{
        font-size:clamp(32px, 4vw, 46px);
        line-height:1.23;
        font-weight:800;
        letter-spacing:-.02em;
        color:var(--ink);
        margin-bottom:14px;
    }

    .category-hero h1 .hero-divider{
        color:var(--primary);
        padding:0 6px;
    }

    .hero-sub{
        font-size:16px;
        line-height:1.9;
        color:var(--text);
        max-width:560px;
    }

    .hero-actions{
        display:flex;
        align-items:center;
        gap:14px;
        flex-wrap:wrap;
        margin-top:30px;
    }

    .hero-tags{
        display:flex;
        align-items:center;
        flex-wrap:wrap;
        gap:10px;
        margin-top:30px;
    }

    .hero-tags span{
        display:inline-block;
        font-size:13px;
        font-weight:600;
        color:#415d75;
        background:rgba(255,255,255,.85);
        border:1px solid #d7e2ed;
        border-radius:999px;
        padding:4px 12px;
        transition:all .2s ease;
    }

    .hero-tags span:hover{
        border-color:var(--primary);
        color:var(--primary);
        background:var(--primary-soft);
    }

    .hero-visual{
        position:relative;
        max-width:500px;
        justify-self:end;
        width:100%;
    }

    .hero-visual-main{
        border-radius:22px;
        overflow:hidden;
        box-shadow:var(--shadow-lg);
        background:#dceaff;
        border:1px solid #f0f6fb;
    }

    .hero-visual-main img{
        width:100%;
        aspect-ratio:4/3;
        object-fit:cover;
    }

    .hero-visual-note{
        display:flex;
        align-items:center;
        gap:10px;
        width:calc(100% - 40px);
        margin:-30px 20px 0;
        position:relative;
        z-index:2;
        background:rgba(255,255,255,.94);
        border:1px solid #e6edf4;
        border-radius:14px;
        box-shadow:var(--shadow-sm);
        padding:12px 15px;
        backdrop-filter:blur(8px);
    }

    .hero-visual-note svg{
        flex-shrink:0;
        width:20px;
        height:20px;
        color:var(--primary);
    }

    .hero-visual-note strong{
        display:block;
        font-size:14px;
        color:var(--ink);
    }

    .hero-visual-note small{
        font-size:12px;
        color:var(--muted);
        line-height:1.5;
    }

    .topic-card-grid{
        display:grid;
        grid-template-columns:repeat(4,minmax(0,1fr));
        gap:24px;
    }

    .topic-card{
        display:flex;
        flex-direction:column;
        background:var(--surface);
        border:1px solid #edf3f8;
        border-radius:var(--radius-lg);
        overflow:hidden;
        box-shadow:var(--shadow-sm);
        transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
    }

    .topic-card:hover{
        transform:translateY(-5px);
        box-shadow:var(--shadow-lg);
        border-color:#cfe0ef;
    }

    .topic-card figure{
        aspect-ratio:16/9;
        background:#e9f1f8;
        overflow:hidden;
        border-bottom:1px solid #edf2f6;
    }

    .topic-card figure img{
        width:100%;
        height:100%;
        object-fit:cover;
        transition:transform .6s ease;
    }

    .topic-card:hover figure img{
        transform:scale(1.05);
    }

    .topic-card-body{
        display:flex;
        flex-direction:column;
        flex:1;
        padding:20px 20px 18px;
    }

    .topic-card-title{
        display:flex;
        align-items:center;
        gap:8px;
        font-size:17px;
        font-weight:800;
        color:var(--ink);
        line-height:1.45;
        transition:color .2s;
    }

    .topic-card:hover .topic-card-title{
        color:var(--primary);
    }

    .topic-card-body > p{
        margin-top:8px;
        font-size:13px;
        line-height:1.75;
        color:var(--text);
    }

    .topic-card-foot{
        margin-top:auto;
        padding-top:16px;
    }

    .topic-card-foot a{
        font-size:13px;
        font-weight:700;
        color:var(--primary-deep);
        transition:color .2s;
    }

    .topic-card-foot a:hover{
        color:var(--primary);
    }

    .steps-section{
        background:#fbfcfe;
        border-top:1px solid #e9eff5;
    }

    .step-grid{
        display:grid;
        grid-template-columns:repeat(4,minmax(0,1fr));
        gap:24px;
        counter-reset:stepcount;
    }

    .step-item{
        position:relative;
        background:#fff;
        border:1px solid #e4edf4;
        border-radius:var(--radius-lg);
        padding:26px 22px 22px;
        overflow:hidden;
        transition:transform .24s ease, box-shadow .24s ease;
    }

    .step-item::before{
        counter-increment:stepcount;
        content:"0" counter(stepcount);
        position:absolute;
        right:14px;
        top:4px;
        font-weight:800;
        font-size:52px;
        line-height:1.3;
        color:rgba(36,114,201,.08);
        letter-spacing:-.04em;
    }

    .step-item:hover{
        transform:translateY(-4px);
        box-shadow:var(--shadow-lg);
    }

    .step-icon{
        display:inline-flex;
        width:46px;
        height:46px;
        border-radius:13px;
        align-items:center;
        justify-content:center;
        color:#fff;
        background:linear-gradient(135deg, #2e80db, #226bc8);
        margin-bottom:16px;
        box-shadow:0 8px 16px rgba(36,114,201,.24);
    }

    .step-icon svg{
        width:22px;
        height:22px;
    }

    .step-item h3{
        font-size:18px;
        font-weight:800;
        color:var(--ink);
        margin-bottom:6px;
    }

    .step-item p{
        font-size:14px;
        color:var(--text);
    }

    .update-strip{
        border-bottom:1px solid var(--line);
        background:#fff;
    }

    .update-strip-inner{
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:22px;
        padding:18px 0;
        flex-wrap:wrap;
    }

    .update-strip-message{
        display:flex;
        align-items:center;
        gap:12px;
        max-width:760px;
    }

    .update-strip-message svg{
        flex-shrink:0;
        width:22px;
        height:22px;
        color:var(--amber);
    }

    .update-strip-message strong{
        font-size:14px;
        display:block;
        color:var(--ink);
    }

    .update-strip-message p{
        font-size:13px;
        color:var(--text);
    }

    .safety-grid{
        display:grid;
        grid-template-columns:repeat(4,minmax(0,1fr));
        gap:24px;
    }

    .safety-item{
        background:#fff;
        border:1px solid #e6eef5;
        border-radius:var(--radius-lg);
        padding:24px;
        transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .safety-item:hover{
        transform:translateY(-3px);
        box-shadow:var(--shadow-sm);
        border-color:#bcd7ef;
    }

    .safety-icon{
        width:42px;
        height:42px;
        border-radius:12px;
        display:grid;
        place-items:center;
        color:var(--teal);
        background:var(--teal-soft);
        margin-bottom:14px;
    }

    .safety-icon svg{
        width:21px;
        height:21px;
    }

    .safety-item h3{
        font-size:16px;
        font-weight:800;
        margin-bottom:6px;
    }

    .safety-item p{
        font-size:13px;
        color:var(--text);
        line-height:1.8;
    }

    .faq-section{
        background:var(--section-alt);
    }

    .faq-wrap{
        display:grid;
        grid-template-columns:.92fr 1.08fr;
        gap:58px;
        align-items:start;
    }

    .faq-intro h2{
        font-size:28px;
        line-height:1.4;
        margin-bottom:12px;
    }

    .faq-intro p{
        color:var(--text);
        margin-bottom:18px;
        font-size:15px;
    }

    .faq-helper{
        display:inline-flex;
        align-items:center;
        gap:8px;
        font-size:13px;
        color:var(--primary-deep);
        background:#fff;
        border-radius:999px;
        border:1px solid #d6e3ef;
        padding:5px 14px;
    }

    .faq-list{
        display:flex;
        flex-direction:column;
        gap:13px;
    }

    .faq-item{
        background:#fff;
        border:1px solid #e3eaf1;
        border-radius:14px;
        overflow:hidden;
        transition:box-shadow .2s ease, border-color .2s;
    }

    .faq-item[open]{
        border-color:#c7dcef;
        box-shadow:var(--shadow-sm);
    }

    .faq-item summary{
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:20px;
        padding:18px 20px;
        cursor:pointer;
        font-weight:700;
        font-size:15px;
        color:var(--ink);
        user-select:none;
        transition:background .18s ease;
        list-style:none;
    }

    .faq-item summary::-webkit-details-marker{
        display:none;
    }

    .faq-item summary:hover{
        background:#fafcff;
    }

    .faq-item .faq-q{
        max-width:560px;
    }

    .faq-item .faq-plus{
        flex-shrink:0;
        width:26px;
        height:26px;
        display:grid;
        place-items:center;
        border-radius:50%;
        background:var(--primary-soft);
        color:var(--primary);
        position:relative;
        transition:transform .22s ease, background .22s ease;
    }

    .faq-item .faq-plus span{
        display:block;
        width:12px;
        height:2px;
        background:currentColor;
        border-radius:3px;
    }

    .faq-item .faq-plus span::after{
        content:"";
        display:block;
        width:2px;
        height:12px;
        background:currentColor;
        border-radius:3px;
        transform:translateY(-5px);
        margin-left:5px;
    }

    .faq-item[open] .faq-plus{
        transform:rotate(45deg);
        background:var(--primary);
        color:#fff;
    }

    .faq-item .faq-a{
        padding:0 22px 20px;
        font-size:14px;
        line-height:1.9;
        color:var(--text);
        border-top:1px dashed #e8eef4;
        margin-top:-2px;
        padding-top:14px;
    }

    .cta-section{
        padding:76px 0 86px;
    }

    .cta-panel{
        position:relative;
        background:linear-gradient(115deg, #f2f8fd, #ffffff 52%, #e7f5f2);
        border:1px solid #daeaec;
        border-radius:28px;
        padding:54px 56px;
        overflow:hidden;
        text-align:center;
        box-shadow:var(--shadow-sm);
    }

    .cta-panel::before{
        content:"";
        position:absolute;
        width:260px;
        height:260px;
        border:32px solid rgba(36,114,201,.06);
        border-radius:50%;
        top:-80px;
        right:-70px;
        pointer-events:none;
    }

    .cta-panel h2{
        font-size:clamp(24px, 3vw, 34px);
        font-weight:800;
        letter-spacing:-.02em;
    }

    .cta-panel > p{
        color:var(--text);
        margin:14px auto 28px;
        max-width:520px;
        font-size:15px;
    }

    .cta-actions{
        display:flex;
        justify-content:center;
        gap:14px;
        flex-wrap:wrap;
    }

    .site-footer{
        background:#0e2230;
        color:#c7d6e1;
        padding-top:64px;
    }

    .footer-grid{
        display:grid;
        grid-template-columns:1.5fr .8fr .9fr;
        gap:60px;
        padding-bottom:46px;
    }

    .footer-logo{
        display:inline-flex;
        align-items:center;
        color:#fff;
        font-weight:800;
        font-size:20px;
        margin-bottom:14px;
    }

    .footer-logo em{
        font-style:normal;
        color:#8fc6f2;
        margin-left:6px;
    }

    .footer-brand p{
        color:#94afc2;
        line-height:1.9;
        font-size:14px;
        max-width:330px;
    }

    .footer-col h4{
        color:#fff;
        font-size:15px;
        font-weight:700;
        margin-bottom:16px;
    }

    .footer-col ul{
        display:flex;
        flex-direction:column;
        gap:10px;
    }

    .footer-col a{
        color:#a7bdd0;
        font-size:14px;
        transition:color .2s ease, padding-left .2s ease;
    }

    .footer-col a:hover{
        color:#fff;
        padding-left:4px;
    }

    .footer-bottom{
        border-top:1px solid rgba(255,255,255,.12);
    }

    .footer-bottom-inner{
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:20px;
        flex-wrap:wrap;
        padding:19px 0;
        font-size:12px;
        color:#819aad;
    }

    .footer-bottom-inner a{
        color:#b6ccdb;
    }

    @media (max-width: 1100px){
        .header-container{
            gap:12px;
        }

        .header-nav ul{
            gap:16px;
        }

        .logo-text{
            font-size:16px;
        }

        .topic-card-grid,
        .step-grid,
        .safety-grid{
            grid-template-columns:repeat(2,minmax(0,1fr));
        }

        .faq-wrap{
            gap:34px;
        }
    }

    @media (hover:hover){
        .topic-card,
        .step-item,
        .safety-item{
            cursor:default;
        }
    }

    @media (max-width: 991px){
        .header-container{
            flex-wrap:wrap;
            padding-top:12px;
            padding-bottom:12px;
            min-height:auto;
        }

        .logo{
            margin-right:auto;
        }

        .nav-trigger{
            display:inline-flex;
            margin-left:0;
        }

        .header-nav{
            display:none;
            flex-basis:100%;
            order:4;
            background:#fff;
            border:1px solid #e4edf5;
            border-radius:14px;
            padding:6px 12px;
            box-shadow:var(--shadow-sm);
            margin-top:6px;
        }

        .header-nav.open{
            display:block;
        }

        .header-nav ul{
            flex-direction:column;
            align-items:stretch;
            gap:0;
        }

        .header-nav a{
            padding:12px 10px;
            border-radius:8px;
        }

        .header-nav a::after,
        .header-nav a.active::after{
            display:none;
        }

        .header-nav a.active{
            background:var(--primary-soft);
        }

        .header-search{
            order:3;
            flex-basis:100%;
            max-width:100%;
            margin:10px 0 0;
        }

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

        .hero-visual{
            justify-self:center;
        }
    }

    @media (max-width: 767px){
        .section{
            padding:56px 0;
        }

        .sec-head{
            flex-direction:column;
            gap:10px;
        }

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

        .category-hero{
            padding:46px 0 42px;
        }

        .category-hero h1{
            font-size:30px;
        }

        .topic-card-grid,
        .step-grid,
        .safety-grid{
            grid-template-columns:1fr;
        }

        .topic-card-title{
            font-size:16px;
        }

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

        .cta-panel{
            padding:42px 22px;
            border-radius:18px;
        }

        .cta-actions .btn{
            width:100%;
        }

        .cta-actions .btn + .btn{
            margin-top:0;
        }

        .footer-grid{
            grid-template-columns:1fr;
            gap:34px;
            padding-bottom:34px;
        }

        .footer-brand p{
            max-width:100%;
        }

        .update-strip-inner{
            padding:20px 0;
        }

        .step-item::before{
            font-size:44px;
        }
    }

    @media (max-width: 560px){
        .header-container{
            width:min(100% - 22px, var(--container));
        }

        .search-kbd{
            display:none;
        }

        .search-btn{
            min-width:52px;
            padding:0 13px;
        }

        .hero-sub{
            font-size:15px;
        }

        .hero-actions .btn{
            width:100%;
        }

        .hero-visual-note small{
            display:none;
        }

        .footer-bottom-inner{
            flex-direction:column;
            justify-content:flex-start;
            text-align:left;
        }
    }

/* roulang page: article */
:root {
            --primary: #1769e0;
            --primary-dark: #1056c2;
            --primary-soft: #e8f1fd;
            --accent: #0ea5a4;
            --accent-soft: #e1f5f4;
            --amber: #e8a13d;
            --amber-soft: #fdf2df;
            --ink: #162b3a;
            --ink-2: #416174;
            --ink-3: #7b8f9e;
            --line: #d9e2ec;
            --line-soft: #eaf0f5;
            --bg: #f6f9fc;
            --white: #ffffff;
            --footer-bg: #10232f;
            --footer-bg2: #0c1d27;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 12px rgba(20, 50, 80, .05);
            --shadow: 0 4px 20px rgba(20, 50, 80, .06);
            --shadow-lg: 0 12px 28px rgba(20, 50, 80, .12);
            --space: 88px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a:hover {
            color: var(--primary);
        }

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line-soft);
            box-shadow: 0 1px 0 rgba(22, 43, 58, .02);
        }

        .header-container {
            position: relative;
            display: flex;
            align-items: center;
            gap: 18px;
            min-height: 72px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            font-weight: 800;
            font-size: 20px;
            color: var(--ink);
            flex-shrink: 0;
            letter-spacing: .2px;
        }

        .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background .25s ease, transform .25s ease;
        }

        .logo:hover .logo-mark {
            background: var(--primary);
            color: #fff;
            transform: rotate(-6deg);
        }

        .logo-text em {
            font-style: normal;
            color: var(--primary);
        }

        .header-nav {
            margin-left: 6px;
        }

        .header-nav ul {
            display: flex;
            gap: 4px;
        }

        .header-nav a {
            display: block;
            padding: 9px 15px;
            border-radius: var(--radius-pill);
            color: var(--ink-2);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            white-space: nowrap;
            transition: background .22s ease, color .22s ease;
        }

        .header-nav a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .header-nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 700;
        }

        .header-search {
            flex: 1 1 460px;
            max-width: 560px;
            margin-left: auto;
        }

        .search-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-pill);
            padding: 5px 6px 5px 16px;
            box-shadow: var(--shadow-sm);
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .search-bar:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(23, 105, 224, .12), var(--shadow-sm);
        }

        .search-bar>svg {
            color: var(--ink-3);
            flex-shrink: 0;
        }

        .search-bar input {
            flex: 1;
            min-width: 0;
            background: transparent;
            color: var(--ink);
            font-size: 15px;
        }

        .search-bar input::placeholder {
            color: #98a8b6;
        }

        .search-kbd {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 9px;
            border: 1px solid var(--line);
            border-radius: 8px;
            background: var(--bg);
            color: var(--ink-3);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .5px;
            flex-shrink: 0;
        }

        .search-btn {
            height: 38px;
            padding: 0 20px;
            border-radius: var(--radius-pill);
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: .4px;
            transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
        }

        .search-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(23, 105, 224, .25);
        }

        .nav-trigger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--line);
            background: #fff;
            flex-shrink: 0;
        }

        .nav-trigger span {
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--ink);
            transition: transform .25s ease, opacity .25s ease;
        }

        .nav-trigger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-trigger.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-trigger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .article-page-main {
            padding-bottom: 80px;
        }

        .breadcrumbs {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            padding: 28px 0 14px;
            font-size: 13px;
            color: var(--ink-3);
        }

        .breadcrumbs a {
            color: var(--ink-2);
            font-weight: 500;
            transition: color .2s ease;
        }

        .breadcrumbs a:hover {
            color: var(--primary);
        }

        .breadcrumbs .sep {
            color: #b5c3cf;
        }

        .breadcrumbs .current {
            max-width: 480px;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
            color: var(--ink);
            font-weight: 600;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 32px;
            align-items: start;
        }

        .article-main-column {
            min-width: 0;
        }

        .article-card {
            background: #fff;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 44px 46px 38px;
        }

        .article-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: .3px;
            margin-bottom: 16px;
            background: var(--primary-soft);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
        }

        .article-eyebrow::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .article-heading {
            font-size: 34px;
            line-height: 1.4;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: .2px;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 22px;
            padding-top: 14px;
            padding-bottom: 14px;
            border-top: 1px dashed var(--line);
            border-bottom: 1px dashed var(--line);
            margin-top: 4px;
            font-size: 14px;
            color: var(--ink-3);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-item svg {
            width: 15px;
            height: 15px;
            color: var(--ink-3);
        }

        .meta-item strong {
            color: var(--ink-2);
            font-weight: 600;
        }

        .article-description {
            margin-top: 18px;
            padding: 16px 20px;
            background: #f2f7fc;
            border-left: 3px solid var(--primary);
            border-radius: 10px;
            color: var(--ink-2);
            font-size: 15px;
            line-height: 1.9;
        }

        .article-body {
            margin-top: 28px;
            font-size: 16.5px;
            line-height: 1.9;
            color: #2c4456;
            overflow-wrap: break-word;
        }

        .article-body h2 {
            font-size: 24px;
            color: var(--ink);
            font-weight: 800;
            line-height: 1.5;
            margin: 2.4rem 0 1rem;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--line-soft);
        }

        .article-body h3 {
            font-size: 20px;
            color: var(--ink);
            font-weight: 700;
            margin: 2.2rem 0 .8rem;
        }

        .article-body h4 {
            font-size: 17px;
            color: var(--ink);
            font-weight: 700;
            margin: 1.6rem 0 .6rem;
        }

        .article-body p {
            margin: 1.1rem 0;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary-dark);
            text-decoration: none;
            background: var(--primary-soft);
            border-radius: 4px;
        }

        .article-body ul,
        .article-body ol {
            margin: 1.3rem 0;
            padding-left: 1.5em;
        }

        .article-body ul li,
        .article-body ol li {
            margin: .55rem 0;
        }

        .article-body ul li::marker {
            color: var(--primary);
        }

        .article-body ol li::marker {
            color: var(--primary);
            font-weight: 600;
        }

        .article-body blockquote {
            margin: 1.6rem 0;
            padding: 18px 22px;
            background: #f7f9fb;
            border-left: 4px solid var(--accent);
            border-radius: 4px 12px 12px 4px;
            color: var(--ink-2);
            font-size: 15.5px;
        }

        .article-body blockquote p {
            margin: 0;
        }

        .article-body code {
            background: #eef2f7;
            border: 1px solid var(--line-soft);
            color: #ae4b4b;
            padding: 2px 7px;
            border-radius: 6px;
            font-size: .92em;
        }

        .article-body pre {
            background: #1a2a36;
            color: #e6f0f7;
            border-radius: 14px;
            padding: 20px 22px;
            overflow: auto;
            line-height: 1.7;
            margin: 1.6rem 0;
        }

        .article-body pre code {
            background: transparent;
            border: none;
            color: inherit;
            padding: 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 15px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--line);
            padding: 12px 14px;
            text-align: left;
        }

        .article-body th {
            background: #f2f7fc;
            font-weight: 700;
            color: var(--ink);
        }

        .article-body img {
            border-radius: 14px;
            margin: 1.6rem 0;
            box-shadow: var(--shadow-sm);
        }

        .article-tailbar {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            margin-top: 36px;
            padding-top: 26px;
            border-top: 1px solid var(--line-soft);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }

        .tag-label {
            font-size: 13px;
            color: var(--ink-3);
            font-weight: 600;
            margin-right: 4px;
        }

        .post-tag {
            display: inline-flex;
            align-items: center;
            min-height: 30px;
            padding: 0 14px;
            background: #f1f5f9;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-pill);
            color: var(--ink-2);
            font-size: 13px;
            font-weight: 600;
            transition: background .2s ease, border-color .2s ease, color .2s ease;
        }

        .post-tag:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: #c6dcf6;
        }

        .article-share {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            height: 40px;
            padding: 0 16px;
            border-radius: var(--radius-pill);
            background: #fff;
            border: 1px solid var(--line);
            color: var(--ink-2);
            font-size: 14px;
            font-weight: 600;
            transition: border-color .22s ease, color .22s ease, background .22s ease, transform .2s ease;
        }

        .share-btn svg {
            width: 15px;
            height: 15px;
        }

        .share-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }

        .not-found-card {
            padding: 56px 24px 48px;
            text-align: center;
        }

        .not-found-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 22px;
            border-radius: 20px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .not-found-card h1 {
            font-size: 28px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .not-found-card p {
            color: var(--ink-2);
            margin-bottom: 26px;
        }

        .article-aside {
            min-width: 0;
            position: sticky;
            top: 92px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .aside-card {
            background: #fff;
            border: 1px solid var(--line-soft);
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }

        .aside-card h3 {
            font-size: 15px;
            font-weight: 800;
            color: var(--ink);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            letter-spacing: .2px;
        }

        .aside-card h3::before {
            content: "";
            width: 4px;
            height: 16px;
            border-radius: 4px;
            background: var(--primary);
        }

        .author-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 18px;
        }

        .author-avatar {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            background: linear-gradient(145deg, #dce9f8, #bddaF3);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .author-info {
            flex: 1;
            min-width: 0;
        }

        .author-info strong {
            display: block;
            font-size: 15px;
            color: var(--ink);
        }

        .author-info span {
            font-size: 13px;
            color: var(--ink-3);
        }

        .aside-site-intro {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.8;
            padding-top: 16px;
            border-top: 1px dashed var(--line);
        }

        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hot-list li {
            counter-increment: hot;
            display: flex;
            align-items: baseline;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink-2);
            padding: 9px 4px;
            border-bottom: 1px dashed var(--line-soft);
            transition: color .2s ease, padding-left .2s ease;
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list li::before {
            content: counter(hot, decimal-leading-zero);
            font-size: 12px;
            font-weight: 800;
            color: #a9bccc;
            flex-shrink: 0;
        }

        .hot-list li:hover {
            color: var(--primary);
            padding-left: 8px;
        }

        .quick-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .quick-nav a {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            min-height: 44px;
            padding: 0 12px;
            border-radius: 12px;
            background: #f5f8fb;
            color: var(--ink-2);
            font-size: 14px;
            font-weight: 600;
            transition: background .22s ease, color .22s ease, transform .2s ease;
        }

        .quick-nav a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .side-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .side-tag-cloud span {
            display: inline-flex;
            height: 32px;
            padding: 0 14px;
            align-items: center;
            border-radius: var(--radius-pill);
            background: var(--bg);
            border: 1px solid var(--line);
            color: var(--ink-3);
            font-size: 13px;
            font-weight: 600;
            cursor: default;
        }

        .side-tag-cloud span:hover {
            color: var(--primary);
            border-color: #bcd4f2;
            background: var(--primary-soft);
        }

        .related-section {
            margin-top: 40px;
        }

        .related-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 18px;
        }

        .related-head h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: .2px;
        }

        .related-head p {
            font-size: 14px;
            color: var(--ink-3);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 20px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--line-soft);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #cfe1f6;
        }

        .related-cover {
            aspect-ratio: 16 / 9;
            background: #e7eef5;
            overflow: hidden;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }

        .related-card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .related-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.6;
        }

        .related-card-body p {
            color: var(--ink-2);
            font-size: 14px;
            line-height: 1.8;
            flex: 1;
        }

        .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--ink-3);
            font-size: 13px;
            border-top: 1px dashed var(--line-soft);
            padding-top: 12px;
        }

        .related-meta a {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .related-meta a svg {
            width: 13px;
            height: 13px;
            transition: transform .2s ease;
        }

        .related-meta a:hover svg {
            transform: translateX(4px);
        }

        .article-return {
            margin-top: 44px;
            background: linear-gradient(135deg, #f0f6fc, #e7f2fb);
            border: 1px solid #d7e6f5;
            border-radius: var(--radius-lg);
            padding: 32px 34px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .article-return h2 {
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .article-return p {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.7;
        }

        .return-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 22px;
            border-radius: var(--radius-pill);
            background: var(--primary);
            color: #fff !important;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 6px 16px rgba(23, 105, 224, .18);
            transition: background .22s ease, transform .2s ease, box-shadow .22s ease;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(23, 105, 224, .24);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 22px;
            border-radius: var(--radius-pill);
            background: #fff;
            color: var(--primary);
            border: 1px solid #c7d8ec;
            font-weight: 700;
            font-size: 14px;
            transition: border-color .22s ease, background .22s ease, transform .2s ease;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }

        .site-footer {
            background: var(--footer-bg);
            color: #b9c8d3;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 56px;
            padding-top: 56px;
            padding-bottom: 44px;
        }

        .footer-logo {
            display: flex;
            flex-direction: column;
            font-size: 23px;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .footer-logo em {
            font-style: normal;
            color: #8fbff0;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            max-width: 340px;
            color: #8fa3b1;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #eef4f8;
            margin-bottom: 18px;
            letter-spacing: .3px;
        }

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

        .footer-col a {
            font-size: 14px;
            color: #9bb0bd;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-col a::before {
            content: "·";
            color: #587b92;
        }

        .footer-col a:hover {
            color: #e8f2fa;
            padding-left: 4px;
        }

        .footer-bottom {
            background: var(--footer-bg2);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            padding-top: 18px;
            padding-bottom: 18px;
            font-size: 13px;
            color: #718999;
        }

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

        @media (max-width: 1100px) {
            :root {
                --space: 64px;
            }
            .header-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--line);
                border-radius: 0 0 18px 18px;
                box-shadow: 0 18px 30px rgba(20, 50, 80, .10);
                padding: 10px 24px 18px;
                margin-left: 0;
            }
            .header-nav.open {
                display: block;
            }
            .header-nav ul {
                flex-direction: column;
                gap: 2px;
            }
            .header-nav a {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 16px;
            }
            .nav-trigger {
                display: inline-flex;
            }
            .header-search {
                flex: 1 1 auto;
                max-width: 520px;
            }
            .article-layout {
                grid-template-columns: minmax(0, 1fr) 300px;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 860px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-aside {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .aside-card {
                padding: 20px;
            }
            .article-card {
                padding: 32px 26px 28px;
            }
            .article-heading {
                font-size: 28px;
            }
            .article-return {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-container {
                flex-wrap: wrap;
                min-height: 66px;
                gap: 8px;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .logo {
                order: 1;
                font-size: 18px;
            }
            .logo-mark {
                width: 30px;
                height: 30px;
            }
            .header-search {
                order: 3;
                flex: 1 0 100%;
                max-width: 100%;
            }
            .search-bar {
                height: 44px;
            }
            .search-btn {
                height: 36px;
                padding: 0 16px;
                font-size: 14px;
            }
            .search-kbd {
                display: none;
            }
            .nav-trigger {
                order: 2;
                margin-left: auto;
                width: 42px;
                height: 42px;
            }
            .breadcrumbs {
                padding-top: 20px;
            }
            .article-card {
                padding: 26px 18px 24px;
                border-radius: 16px;
            }
            .article-heading {
                font-size: 24px;
                line-height: 1.55;
            }
            .article-eyebrow {
                font-size: 12px;
            }
            .article-meta {
                gap: 8px 14px;
                font-size: 13px;
            }
            .article-body {
                font-size: 15.5px;
                line-height: 1.9;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-tailbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-share {
                width: 100%;
            }
            .article-aside {
                grid-template-columns: 1fr;
            }
            .related-head {
                align-items: flex-start;
                flex-direction: column;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-return {
                padding: 26px 22px;
            }
            .return-actions {
                width: 100%;
            }
            .return-actions .btn-primary,
            .return-actions .btn-secondary {
                flex: 1;
                min-width: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
                padding-top: 44px;
                padding-bottom: 34px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom-inner {
                flex-direction: column;
                text-align: left;
            }
        }

        @media (max-width: 480px) {
            .logo-text {
                font-size: 16px;
            }
            .logo-mark {
                display: none;
            }
            .search-btn {
                padding: 0 12px;
            }
            .article-card {
                padding: 22px 14px 20px;
            }
            .article-heading {
                font-size: 22px;
            }
            .article-description {
                padding: 14px 16px;
            }
            .related-card-body {
                padding: 16px;
            }
            .quick-nav {
                grid-template-columns: 1fr;
            }
        }

        @media (hover: none) {
            .related-card:hover,
            .btn-primary:hover,
            .btn-secondary:hover,
            .related-cover img:hover {
                transform: none;
            }
        }

/* roulang page: category2 */
:root{
  --brand:#1d6fd1;
  --brand-dark:#1559ad;
  --brand-light:#e8f2fd;
  --brand-grad:linear-gradient(135deg,#1d6fd1,#1a86b8);
  --teal:#1ca39a;
  --teal-light:#e2f6f2;
  --teal-dark:#118078;
  --amber:#dfa32b;
  --amber-light:#fbf1dc;
  --bg:#f5f9fd;
  --surface:#ffffff;
  --surface-2:#eef3f9;
  --heading:#142c3e;
  --text:#405c6f;
  --muted:#7c90a0;
  --border:#d8e3ee;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:22px;
  --radius-pill:999px;
  --shadow-sm:0 4px 20px rgba(18,45,70,.06);
  --shadow-md:0 12px 30px rgba(18,45,70,.11);
  --shadow-lg:0 18px 44px rgba(18,45,70,.14);
  --space:clamp(56px,9vw,96px);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul,ol{list-style:none;}
button,input{font:inherit;color:inherit;}
input::placeholder{color:#9aabb7;}
.container{max-width:1240px;margin:0 auto;padding:0 20px;}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
.header-container{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:74px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  flex-shrink:0;
  color:var(--heading);
  transition:opacity .2s ease;
}
.logo:hover{opacity:.88;}
.logo-mark{
  width:38px;height:38px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  background:var(--brand-grad);
  box-shadow:0 6px 16px rgba(29,111,209,.24);
}
.logo-text{
  font-size:1.18rem;
  font-weight:800;
  color:var(--heading);
  line-height:1.15;
  white-space:nowrap;
}
.logo-text em{
  display:block;
  font-style:normal;
  color:var(--brand);
  font-size:.54rem;
  font-weight:700;
  letter-spacing:.18em;
}
.header-nav ul{display:flex;gap:6px;}
.header-nav li a{
  display:block;
  padding:8px 16px;
  border-radius:999px;
  color:#3a586b;
  font-weight:600;
  font-size:.95rem;
  white-space:nowrap;
  transition:all .22s ease;
}
.header-nav li a:hover{color:var(--brand);background:var(--brand-light);}
.header-nav li a.active{
  color:#fff;
  background:var(--brand);
  box-shadow:0 6px 14px rgba(29,111,209,.22);
}
.header-search{
  flex:1;
  max-width:560px;
  margin-left:auto;
}
.search-bar{
  display:flex;
  align-items:center;
  gap:10px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:999px;
  padding:6px 7px 6px 16px;
  transition:border-color .22s,box-shadow .22s;
}
.search-bar:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(29,111,209,.12);
}
.search-bar > svg{
  color:var(--muted);
  flex-shrink:0;
}
.search-bar input{
  flex:1;
  min-width:0;
  border:none;
  outline:none;
  background:transparent;
  font-size:.92rem;
  padding:8px 0;
}
.search-kbd{
  background:#eef2f7;
  color:var(--muted);
  font-size:.72rem;
  border-radius:6px;
  padding:3px 8px;
  white-space:nowrap;
}
.search-btn{
  height:40px;
  min-width:74px;
  border:0;
  border-radius:999px;
  background:var(--brand);
  color:#fff;
  font-weight:700;
  font-size:.9rem;
  padding:0 20px;
  cursor:pointer;
  transition:background .22s,transform .15s,box-shadow .22s;
  white-space:nowrap;
}
.search-btn:hover{background:var(--brand-dark);box-shadow:0 6px 16px rgba(29,111,209,.26);}
.search-btn:active{transform:translateY(1px);}
.nav-trigger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  cursor:pointer;
  transition:border-color .2s;
  box-shadow:var(--shadow-sm);
}
.nav-trigger span{
  display:block;
  width:17px;height:2px;
  border-radius:999px;
  background:var(--heading);
  transition:transform .25s,opacity .25s;
}
.nav-trigger:hover{border-color:var(--brand);}
.site-header.nav-open .nav-trigger span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header.nav-open .nav-trigger span:nth-child(2){opacity:0;}
.site-header.nav-open .nav-trigger span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  padding:13px 28px;
  font-weight:700;
  font-size:.95rem;
  line-height:1;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  cursor:pointer;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn:focus-visible,.search-btn:focus-visible,.nav-trigger:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 8px 20px rgba(29,111,209,.2);
}
.btn-primary:hover{
  background:var(--brand-dark);
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(29,111,209,.26);
}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:#fff;
  color:var(--brand-dark);
  border-color:#c8d9ea;
}
.btn-outline:hover{
  border-color:var(--brand);
  color:var(--brand);
  background:var(--brand-light);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(18,45,70,.08);
}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--brand-dark);
  border-color:transparent;
}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand);}

/* ---------- Breadcrumb ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.86rem;
  color:var(--muted);
  margin-bottom:22px;
}
.crumbs a{color:var(--muted);transition:color .2s;}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{opacity:.55;}

/* ---------- Category Hero ---------- */
.category-hero{
  position:relative;
  padding:64px 0 72px;
  background:#fff;
  overflow:hidden;
}
.category-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-2.webp") center top / cover no-repeat;
  opacity:.08;
  pointer-events:none;
}
.category-hero::after{
  content:"";
  position:absolute;
  right:-100px;
  top:-120px;
  width:360px;
  height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(29,111,209,.12),transparent 68%);
  pointer-events:none;
}
.hero-stack{
  position:relative;
  z-index:2;
  max-width:940px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:var(--amber-light);
  color:#8f6111;
  font-size:.8rem;
  font-weight:700;
  padding:5px 13px;
  border-radius:999px;
  margin-bottom:20px;
}
.category-hero h1{
  color:var(--heading);
  font-size:clamp(1.9rem,4vw,3rem);
  font-weight:800;
  line-height:1.22;
  letter-spacing:.01em;
  max-width:760px;
}
.category-hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-lead{
  margin:18px 0 30px;
  font-size:1.08rem;
  color:var(--text);
  max-width:690px;
  line-height:1.8;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:32px;
}
.hero-note-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  font-size:.88rem;
  color:var(--muted);
}
.hero-note-list span{
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.hero-note-list svg{
  color:var(--teal);
  flex-shrink:0;
}

/* ---------- Section heading ---------- */
.block{
  padding:var(--space) 0;
}
.block-white{background:#fff;}
.block-soft{background:#fff;}
.section-head{
  margin:0 auto 48px;
  max-width:720px;
  text-align:center;
}
.section-head.left{
  text-align:left;
  margin-left:0;
  max-width:100%;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand-dark);
  background:var(--brand-light);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.04em;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head h2{
  color:var(--heading);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  font-weight:800;
  line-height:1.3;
}
.section-head .section-desc{
  margin-top:12px;
  font-size:1rem;
  color:var(--muted);
  line-height:1.8;
}

/* ---------- Topic cards ---------- */
.topic-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.topic-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:28px 26px 24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:all .28s ease;
}
.topic-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:#c5d8e9;
}
.topic-card:focus-within{
  outline:2px solid var(--brand);
  outline-offset:3px;
}
.topic-icon{
  width:52px;
  height:52px;
  border-radius:15px;
  background:var(--brand-light);
  color:var(--brand-dark);
  display:flex;
  align-items:center;
  justify-content:center;
}
.topic-card:nth-child(2) .topic-icon{background:var(--teal-light);color:var(--teal-dark);}
.topic-card:nth-child(3) .topic-icon{background:var(--amber-light);color:#93661b;}
.topic-card:nth-child(4) .topic-icon{background:#eae7f9;color:#6452b8;}
.topic-card h3{
  color:var(--heading);
  font-size:1.06rem;
  font-weight:800;
}
.topic-card p{
  color:var(--muted);
  font-size:.9rem;
  line-height:1.75;
  flex:1;
}
.topic-card .topic-meta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:700;
  font-size:.85rem;
}
.topic-card .topic-meta.is-static{
  color:var(--muted);
  font-weight:500;
}

/* ---------- Resource feature ---------- */
.resource-feature{
  background:linear-gradient(180deg,#fff,#f3f8fd);
}
.resource-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:26px;
  align-items:stretch;
}
.feature-main{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .28s,transform .28s;
}
.feature-main:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.feature-cover{
  position:relative;
  aspect-ratio:16/7;
  overflow:hidden;
  background:#e4edf5;
}
.feature-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.feature-main:hover .feature-cover img{transform:scale(1.03);}
.card-label{
  position:absolute;
  top:16px;
  left:16px;
  background:rgba(255,255,255,.92);
  color:var(--brand-dark);
  font-size:.78rem;
  font-weight:700;
  padding:5px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.feature-info{
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-title{
  color:var(--heading);
  font-size:1.25rem;
  font-weight:800;
  line-height:1.45;
}
.card-desc{
  color:var(--muted);
  font-size:.92rem;
  line-height:1.8;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:5px;
  background:#f0f5fa;
  color:#4c6b7e;
  font-size:.78rem;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  transition:background .2s,color .2s,transform .2s;
}
.tag:hover{
  background:var(--brand-light);
  color:var(--brand-dark);
  transform:translateY(-1px);
}
.meta-date{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--muted);
  font-size:.82rem;
}
.feature-sub{
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:26px;
}
.feature-sub-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  gap:20px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .28s,transform .28s;
}
.feature-sub-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.sub-cover{
  width:46%;
  min-width:180px;
  aspect-ratio:5/4.6;
  background:#edf3f8;
  overflow:hidden;
}
.sub-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.feature-sub-card:hover .sub-cover img{transform:scale(1.05);}
.sub-info{
  flex:1;
  padding:18px 20px 18px 0;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.sub-info h3{
  font-size:1.03rem;
  font-weight:800;
  color:var(--heading);
  line-height:1.45;
}
.sub-info p{
  color:var(--muted);
  font-size:.88rem;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-dark);
  font-weight:700;
  font-size:.86rem;
  transition:color .2s,gap .2s;
}
.article-link:hover{color:var(--brand);gap:10px;}
.article-link svg{flex-shrink:0;}
.center-box{text-align:center;margin-top:40px;}

/* ---------- Steps ---------- */
.steps-wrap{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:64px;
  align-items:center;
}
.steps-copy .section-tag{margin-bottom:12px;}
.steps-copy h2{color:var(--heading);font-size:1.9rem;margin-bottom:14px;}
.steps-copy p{color:var(--muted);line-height:1.85;}
.steps-panel{
  display:flex;
  flex-direction:column;
  position:relative;
}
.step-item{
  display:flex;
  gap:20px;
  padding:28px 0;
  position:relative;
}
.step-item:not(:last-child)::after{
  content:"";
  position:absolute;
  left:28px;
  bottom:-2px;
  width:1px;
  background:linear-gradient(to bottom,var(--border),transparent);
}
.step-num{
  width:56px;
  height:56px;
  border-radius:18px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-weight:800;
  font-size:1.05rem;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  box-shadow:inset 0 0 0 1px rgba(29,111,209,.1);
}
.step-item:nth-child(2) .step-num{background:var(--teal-light);color:var(--teal-dark);}
.step-item:nth-child(3) .step-num{background:var(--amber-light);color:#8d5f18;}
.step-info h3{color:var(--heading);font-size:1.1rem;margin-bottom:8px;}
.step-info p{color:var(--muted);font-size:.92rem;line-height:1.8;}

/* ---------- Chips / Tags cluster ---------- */
.chip-panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px;
  box-shadow:var(--shadow-sm);
}
.chip-panel-title{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--heading);
  font-weight:800;
  font-size:1.05rem;
  margin-bottom:6px;
}
.chip-panel-title svg{color:var(--brand);}
.chip-panel-desc{color:var(--muted);font-size:.9rem;margin-bottom:24px;}
.chip-list{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:#f3f7fb;
  border:1px solid transparent;
  color:var(--heading);
  padding:8px 6px 8px 18px;
  border-radius:999px;
  font-size:.9rem;
  font-weight:600;
  cursor:default;
  transition:background .2s,border-color .2s,transform .2s;
}
.chip::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand);
  opacity:.5;
  flex-shrink:0;
}
.chip:hover{background:var(--brand-light);border-color:#c5d8eb;transform:translateY(-2px);}
.chip-count{
  background:#e7eef6;
  color:var(--muted);
  font-size:.75rem;
  padding:2px 12px;
  border-radius:999px;
  margin-left:8px;
}

/* ---------- Disclaimer strip ---------- */
.notice-strip{
  display:flex;
  align-items:flex-start;
  gap:14px;
  background:var(--amber-light);
  color:#7a5416;
  border-radius:var(--radius);
  padding:18px 22px;
  font-size:.9rem;
  line-height:1.7;
}
.notice-strip svg{flex-shrink:0;margin-top:2px;}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;
  gap:14px;
  max-width:840px;
  margin:0 auto;
}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:0 22px;
  transition:border-color .2s,box-shadow .22s;
}
.faq-item:hover{border-color:#c5d8eb;box-shadow:var(--shadow-sm);}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 0;
  list-style:none;
  cursor:pointer;
  color:var(--heading);
  font-weight:700;
  border-radius:var(--radius);
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-dark);}
.faq-q-icon{
  width:26px;height:26px;
  border-radius:50%;
  background:var(--teal-light);
  color:var(--teal-dark);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:.82rem;
  flex-shrink:0;
}
.faq-icon{
  margin-left:auto;
  width:28px;height:28px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:#f1f5f8;
  color:var(--muted);
  transition:transform .25s,background .2s,color .2s;
}
.faq-icon svg{width:14px;height:14px;}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand-light);color:var(--brand-dark);}
.faq-answer{
  padding:0 0 22px 40px;
  color:#4c697e;
  font-size:.95rem;
  line-height:1.85;
}
.faq-answer a{
  color:var(--brand-dark);
  border-bottom:1px solid rgba(29,111,209,.3);
  transition:border-color .2s;
}
.faq-answer a:hover{border-color:var(--brand);}

/* ---------- CTA ---------- */
.cta-panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:calc(var(--radius-lg) + 8px);
  padding:56px;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.cta-panel::before{
  content:"";
  position:absolute;
  left:10%;
  right:10%;
  bottom:0;
  height:90px;
  background:url("/assets/images/backpic/back-3.png") center bottom / cover no-repeat;
  border-radius:50%;
  opacity:.06;
  pointer-events:none;
}
.cta-panel h2{
  color:var(--heading);
  font-size:clamp(1.45rem,2.6vw,2rem);
  margin-bottom:14px;
}
.cta-panel .cta-sub{
  color:var(--muted);
  max-width:620px;
  margin:0 auto 32px;
  line-height:1.85;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
}
.cta-tip{
  display:inline-block;
  margin-top:24px;
  color:var(--muted);
  font-size:.85rem;
}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:0;
  background:#102433;
  color:#b2c1cd;
  border-top:3px solid var(--brand);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:56px;
  padding:80px 20px 48px;
}
.footer-logo{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  color:#fff;
  font-size:1.25rem;
  font-weight:800;
}
.footer-logo em{
  font-style:normal;
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--brand);
}
.footer-brand p{
  margin-top:14px;
  font-size:.9rem;
  line-height:1.8;
  color:#9db0bd;
  max-width:320px;
}
.footer-col h4{
  color:#fff;
  font-size:.98rem;
  margin-bottom:16px;
  font-weight:700;
}
.footer-col ul{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-col ul a{
  color:#a9bac6;
  font-size:.9rem;
  transition:color .2s,transform .2s;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.footer-col ul a:hover{
  color:#fff;
  transform:translateX(3px);
}
.footer-col ul li:not(:last-child)::after{display:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;
}
.footer-bottom-inner{
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:.82rem;
  color:#7f99aa;
  flex-wrap:wrap;
}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .feature-sub{
    grid-template-rows:auto auto;
  }
}
@media (max-width:991px){
  .header-nav,.header-search{display:none;}
  .nav-trigger{display:inline-flex;}
  .header-container{flex-wrap:wrap;padding-top:7px;padding-bottom:7px;}
  .site-header.nav-open .header-nav,
  .site-header.nav-open .header-search{
    display:block;
    width:100%;
    flex:0 0 100%;
    padding-bottom:14px;
  }
  .site-header.nav-open .header-nav ul{
    flex-direction:column;
    gap:4px;
  }
  .header-nav li a{padding:11px 14px;border-radius:12px;}
  .header-search{max-width:none;}
  .topic-grid{grid-template-columns:repeat(2,1fr);}
  .resource-grid{grid-template-columns:1fr;}
  .feature-sub{grid-template-columns:1fr;grid-template-rows:auto;}
  .steps-wrap{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding-top:56px;}
  .cta-panel{padding:40px 24px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .category-hero{padding:48px 0 60px;}
  .category-hero h1{font-size:1.7rem;}
  .hero-lead{font-size:1rem;}
  .topic-grid{grid-template-columns:1fr;}
  .feature-cover{aspect-ratio:16/9;}
  .feature-sub-card{flex-direction:column;}
  .sub-cover{
    width:100%;
    min-width:0;
    aspect-ratio:16/8;
  }
  .sub-info{padding:4px 20px 20px;}
  .feature-info{padding:20px;}
  .step-item{padding:18px 0;}
  .step-num{width:48px;height:48px;font-size:.95rem;}
  .faq-answer{padding-left:0;}
  .faq-q-icon{margin-left:-2px;}
  .question{padding-left:20px;}
  .chip-list{gap:8px;}
  .chip{padding:7px 5px 7px 14px;font-size:.84rem;}
  .cta-panel{padding:36px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 16px 32px;}
  .footer-bottom-inner{flex-direction:column;text-align:center;}
  .footer-col ul{gap:10px;}
  .section-tag{margin-bottom:10px;}
  .section-head{margin-bottom:32px;}
  .notice-strip{padding:14px 16px;}
}
@media (max-width:520px){
  .header-search{min-width:0;}
  .search-bar{padding-left:12px;}
  .search-kbd{display:none;}
  #searchBtnText{display:none;}
  .search-btn{min-width:48px;padding:0 14px;font-size:0;}
  .search-btn::before{content:"搜";font-size:.9rem;}
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}