/* roulang page: index */
:root {
        --primary: #1563C0;
        --primary-deep: #0F4C95;
        --primary-soft: #E8F0F8;
        --accent: #E4571B;
        --accent-hover: #C94712;
        --bg: #F6F9FC;
        --white: #FFFFFF;
        --text: #101828;
        --text-sub: #475467;
        --text-light: #667085;
        --border: #E4E7EC;
        --radius: 12px;
        --radius-lg: 16px;
        --shadow-card: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.1);
        --shadow-hover: 0 12px 24px -8px rgba(21,99,192,.16);
        --container: 1240px;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

    * {
        box-sizing: border-box;
    }
    ::selection {
        background: rgba(21, 99, 192, .18);
    }

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

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

    button,
    input {
        font: inherit;
    }

    .container {
        max-width: var(--container);
        margin-left: auto;
        margin-right: auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(255, 255, 255, .92);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border);
        transition: box-shadow .25s ease;
    }

    .header-scrolled {
        box-shadow: 0 4px 16px rgba(16, 24, 40, .08);
    }

    .nav-wrap {
        display: flex;
        align-items: center;
        height: 64px;
        gap: 24px;
        justify-content: space-between;
        position: relative;
    }

    .logo {
        display: inline-flex;
        align-items: center;
        gap: 9px;
        flex-shrink: 0;
        font-weight: 700;
        font-size: 22px;
        line-height: 1;
        color: var(--text);
        letter-spacing: -.01em;
    }

    .logo-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 38px;
        height: 30px;
        padding: 0 8px;
        background: var(--primary);
        color: #fff;
        border-radius: 7px;
        font-size: 18px;
        font-weight: 800;
        letter-spacing: .01em;
    }
    .logo-text-line {
        display: flex;
        flex-direction: column;
        line-height: 1.05;
        gap: 3px;
    }
    .logo-sub {
        font-size: 10px;
        letter-spacing: .4em;
        color: var(--primary-deep);
        background: var(--primary-soft);
        padding: 2px 7px;
        border-radius: 4px;
        line-height: 1.4;
        font-weight: 600;
        display: inline-block;
        width: fit-content;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 4px;
        flex: 1;
        justify-content: center;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        height: 64px;
        padding: 0 16px;
        color: var(--text-sub);
        font-size: 15px;
        font-weight: 500;
        position: relative;
        transition: color .2s ease;
        white-space: nowrap;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: -1px;
        height: 3px;
        background: var(--primary);
        border-radius: 4px 4px 0 0;
        opacity: 0;
        transform: scaleX(.6);
        transition: all .22s ease;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--primary);
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        opacity: 1;
        transform: scaleX(1);
    }

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

    .search-box {
        position: relative;
        display: flex;
        align-items: center;
    }

    .hot-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: #FEF5F0;
        color: var(--accent);
        border-radius: 999px;
        padding: 5px 12px;
        font-size: 13px;
        font-weight: 500;
        white-space: nowrap;
        border: 1px solid #F7DCCD;
        transition: all .2s ease;
    }

    .hot-chip:hover {
        border-color: var(--accent);
        background: #FDECE2;
    }

    .hot-dot {
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background: var(--accent);
        color: #fff;
        font-size: 10px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
    }

    .burger-btn {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 9px;
        border: 1px solid var(--border);
        background: #fff;
        color: var(--text);
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }
    .burger-btn:hover {
        border-color: var(--primary);
        color: var(--primary);
    }

    .mobile-drawer {
        display: none;
        position: fixed;
        inset: 0;
        z-index: 80;
        pointer-events: none;
    }
    .mobile-drawer.open {
        pointer-events: auto;
    }
    .drawer-mask {
        position: absolute;
        inset: 0;
        background: rgba(16, 24, 40, .34);
        opacity: 0;
        transition: opacity .25s ease;
    }
    .mobile-drawer.open .drawer-mask {
        opacity: 1;
    }
    .drawer-panel {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(360px, 86vw);
        background: #fff;
        padding: 24px 20px;
        transform: translateX(100%);
        transition: transform .28s ease;
        overflow-y: auto;
        box-shadow: -12px 0 32px rgba(16,24,40,.12);
    }
    .mobile-drawer.open .drawer-panel {
        transform: translateX(0);
    }
    .drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 22px;
    }
    .drawer-close {
        width: 38px;
        height: 38px;
        border: 1px solid var(--border);
        border-radius: 9px;
        background: #fff;
        color: var(--text);
        cursor: pointer;
    }
    .drawer-close:hover {
        border-color: var(--primary);
        color: var(--primary);
    }
    .drawer-links {
        display: flex;
        flex-direction: column;
        font-size: 16px;
        font-weight: 500;
    }
    .drawer-links a {
        border-radius: 10px;
        padding: 13px 10px;
        color: var(--text);
        border-bottom: 1px solid #F2F4F7;
    }
    .drawer-links a:hover {
        background: var(--primary-soft);
        color: var(--primary);
    }

    /* 按钮 */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: 8px;
        font-weight: 600;
        height: 44px;
        padding: 0 22px;
        border: 1px solid transparent;
        transition: all .2s ease;
        cursor: pointer;
        white-space: nowrap;
        font-size: 15px;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 1px 2px rgba(21,99,192,.2);
    }
    .btn-primary:hover {
        background: var(--primary-deep);
        box-shadow: 0 8px 20px -6px rgba(21,99,192,.4);
        transform: translateY(-1px);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 6px rgba(21,99,192,.3);
    }
    .btn-outline {
        background: #fff;
        border-color: #D0D5DD;
        color: var(--text);
    }
    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: #FBFCFE;
    }
    .btn-orange {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 1px 2px rgba(228,87,27,.2);
    }
    .btn-orange:hover {
        background: var(--accent-hover);
        box-shadow: 0 8px 20px -6px rgba(228,87,27,.36);
        transform: translateY(-1px);
    }
    .btn:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }

    .tag {
        display: inline-flex;
        align-items: center;
        background: var(--primary-soft);
        color: var(--primary-deep);
        border-radius: 999px;
        padding: 4px 11px;
        font-size: 12px;
        font-weight: 600;
        line-height: 1.5;
    }
    .tag-orange {
        background: #FDEEE7;
        color: var(--accent);
    }

    /* Hero */
    .hero-section {
        position: relative;
        overflow: hidden;
        background: linear-gradient(180deg, #F9FBFE 0%, #EFF6FD 100%);
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url("/assets/images/backpic/back-1.png");
        background-size: cover;
        background-position: center 32%;
        opacity: .45;
        pointer-events: none;
    }
    .hero-bg-mask {
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.82) 45%, rgba(246,249,252,.55) 100%);
    }
    .hero-inner {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1.08fr .92fr;
        gap: 44px;
        align-items: center;
        padding-top: 74px;
        padding-bottom: 74px;
    }

    .hero-live-chip {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border: 1px solid #CFE0F0;
        background: #fff;
        padding: 7px 14px;
        border-radius: 999px;
        margin-bottom: 20px;
        color: var(--primary-deep);
        font-size: 13px;
        font-weight: 600;
        box-shadow: 0 1px 2px rgba(16,24,40,.04);
    }
    .live-pulse {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        position: relative;
    }
    .live-pulse::after {
        content: "";
        position: absolute;
        inset: -4px;
        border-radius: 50%;
        border: 2px solid var(--accent);
        animation: pulse 1.8s ease-out infinite;
    }
    @keyframes pulse {
        0% {
            transform: scale(.65);
            opacity: .85;
        }
        100% {
            transform: scale(1.6);
            opacity: 0;
        }
    }

    .hero-title {
        font-size: clamp(30px, 4vw, 46px);
        line-height: 1.18;
        font-weight: 700;
        color: var(--text);
        letter-spacing: -.02em;
        margin-bottom: 18px;
    }
    .hero-title span {
        color: var(--primary);
    }
    .hero-desc {
        font-size: 16px;
        color: var(--text-sub);
        line-height: 1.85;
        max-width: 560px;
        margin-bottom: 28px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }
    .hero-cols {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        align-items: center;
        margin-top: 26px;
    }
    .hero-mini {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        background: #fff;
        border: 1px solid #E4E7EC;
        padding: 8px 14px;
        border-radius: 999px;
        color: var(--text-sub);
        font-size: 13px;
        box-shadow: 0 1px 2px rgba(16,24,40,.04);
    }
    .hero-mini strong {
        color: var(--primary);
        font-weight: 700;
    }

    .hero-card {
        position: relative;
        background: #fff;
        border-radius: 18px;
        box-shadow: 0 20px 44px -18px rgba(21,99,192,.2);
        overflow: hidden;
        border: 1px solid #EDF0F4;
        transition: transform .3s ease, box-shadow .3s ease;
    }
    .hero-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 28px 56px -20px rgba(21,99,192,.26);
    }
    .hero-card img {
        width: 100%;
        height: 340px;
        object-fit: cover;
    }
    .hero-card-badge {
        position: absolute;
        left: 16px;
        top: 16px;
        background: rgba(255,255,255,.9);
        backdrop-filter: blur(4px);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        padding: 5px 12px;
        border-radius: 999px;
        box-shadow: 0 2px 8px rgba(16,24,40,.08);
    }
    .hero-card-foot {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 18px;
        background: #fff;
        border-top: 1px solid #F2F4F7;
    }
    .hero-card-foot .hf-title {
        font-size: 14px;
        font-weight: 600;
        color: var(--text);
    }
    .hero-card-foot .hf-sub {
        font-size: 12px;
        color: var(--text-light);
        margin-top: 1px;
    }

    /* section padding */
    .section {
        padding-top: 88px;
        padding-bottom: 88px;
    }

    .section-title {
        font-size: 30px;
        line-height: 1.25;
        font-weight: 700;
        color: var(--text);
        letter-spacing: -.01em;
        margin-bottom: 12px;
    }
    .section-sub {
        color: var(--text-sub);
        max-width: 720px;
        font-size: 15px;
        line-height: 1.75;
    }
    .section-head {
        max-width: 820px;
        margin-bottom: 38px;
    }
    .section-title-sm {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        margin-bottom: 10px;
        text-transform: uppercase;
        letter-spacing: .06em;
        display: block;
    }
    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-soft);
        border-radius: 999px;
        padding: 5px 13px;
        margin-bottom: 16px;
    }

    /* 卖点三连差异化布局 */
    .feature-grid {
        display: grid;
        grid-template-columns: .9fr 1.15fr 1fr;
        gap: 22px;
    }
    .feature-box {
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow-card);
        border: 1px solid #EDF0F4;
        padding: 30px 26px;
        transition: all .24s ease;
        position: relative;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }
    .feature-box:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }
    .feat-num {
        display: flex;
        align-items: baseline;
        gap: 4px;
        font-size: 42px;
        line-height: 1;
        color: var(--primary);
        font-weight: 800;
        letter-spacing: -.03em;
        margin-bottom: 14px;
    }
    .feat-num span {
        font-size: 18px;
        font-weight: 700;
    }
    .feature-support {
        font-size: 13px;
        color: var(--text-light);
        line-height: 1.6;
        padding-top: 16px;
        border-top: 1px dashed var(--border);
        margin-top: auto;
    }
    .feature-line-title {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 12px;
        color: var(--text);
    }
    .feature-quote {
        border-left: 3px solid var(--accent);
        padding: 6px 0 6px 16px;
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-top: 8px;
        font-style: normal;
    }
    .feature-img {
        width: 100%;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
    }
    .feature-split {
        display: flex;
        align-items: center;
        gap: 18px;
        margin-top: 12px;
    }
    .feature-split img {
        width: 92px;
        height: 92px;
        object-fit: cover;
        border-radius: 11px;
        flex-shrink: 0;
    }
    .feature-split p {
        font-size: 14px;
        color: var(--text-sub);
    }

    /* 路径/流程 */
    .flow-section {
        background: #fff;
        border-top: 1px solid #F2F4F7;
        border-bottom: 1px solid #F2F4F7;
    }
    .flow-content {
        display: grid;
        grid-template-columns: .88fr 1.12fr;
        gap: 52px;
        align-items: center;
    }
    .step-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
        counter-reset: step;
    }
    .step-item {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        background: #fff;
        border: 1px solid #E9EDF2;
        border-radius: 12px;
        padding: 18px 20px;
        transition: all .2s ease;
        counter-increment: step;
    }
    .step-item:hover {
        border-color: #CFE0F0;
        box-shadow: var(--shadow-hover);
    }
    .step-item::before {
        counter-increment: step;
        content: counter(step);
        width: 30px;
        height: 30px;
        flex-shrink: 0;
        border-radius: 8px;
        background: var(--primary-soft);
        color: var(--primary);
        font-size: 15px;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .step-item .step-title {
        font-weight: 700;
        font-size: 16px;
        color: var(--text);
        margin-bottom: 3px;
    }
    .step-item .step-desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
    }

    /* news-section */
    .news-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }
    .news-card {
        background: #fff;
        border-radius: var(--radius);
        overflow: hidden;
        border: 1px solid #EDF0F4;
        box-shadow: var(--shadow-card);
        display: flex;
        flex-direction: column;
        transition: all .25s ease;
    }
    .news-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .news-cover {
        width: 100%;
        height: 200px;
        object-fit: cover;
        display: block;
        background: #DCE7F0;
    }
    .news-body {
        padding: 20px 22px 22px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .news-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 12px;
        flex-wrap: wrap;
    }
    .news-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        color: var(--text-light);
        font-size: 12px;
        margin-bottom: 8px;
    }
    .news-title {
        font-size: 18px;
        line-height: 1.5;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .news-title a:hover {
        color: var(--primary);
    }
    .news-summary {
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 14px;
    }
    .news-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: auto;
        padding-top: 16px;
        border-top: 1px solid #F2F4F7;
    }
    .news-link {
        color: var(--primary);
        font-weight: 600;
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap .2s ease;
    }
    .news-link:hover {
        gap: 10px;
        color: var(--primary-deep);
    }
    .news-empty {
        background: #fff;
        border: 1px dashed #C4D6E8;
        border-radius: 14px;
        color: var(--text-light);
        text-align: center;
        padding: 48px 24px;
        font-size: 15px;
        grid-column: 1 / -1;
    }
    .section-bar {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 20px;
        margin-bottom: 34px;
    }
    .section-more {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--primary);
        font-weight: 600;
        font-size: 14px;
        padding: 8px 2px;
        white-space: nowrap;
        border-bottom: 2px solid transparent;
        transition: border-color .2s ease;
    }
    .section-more:hover {
        border-color: var(--primary);
    }

    /* stats 社会认同 */
    .trust-line {
        background: var(--primary-deep);
        border-radius: 16px;
        color: #fff;
        padding: 44px 44px 40px;
        position: relative;
        overflow: hidden;
    }
    .trust-line .bg-icon {
        position: absolute;
        right: -10px;
        top: -20px;
        font-size: 140px;
        opacity: .06;
        pointer-events: none;
    }
    .trust-header {
        font-size: 15px;
        font-weight: 500;
        color: rgba(255,255,255,.72);
        margin-bottom: 10px;
    }
    .trust-title {
        font-size: 28px;
        line-height: 1.3;
        font-weight: 700;
        max-width: 900px;
    }
    .trust-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        margin-top: 34px;
    }
    .trust-item {
        background: rgba(255,255,255,.1);
        border: 1px solid rgba(255,255,255,.18);
        border-radius: 12px;
        padding: 20px 18px;
    }
    .trust-item .trust-num {
        font-size: 30px;
        font-weight: 800;
        line-height: 1.2;
        letter-spacing: -.02em;
        color: #fff;
    }
    .trust-item .trust-label {
        margin-top: 6px;
        font-size: 13px;
        line-height: 1.55;
        color: rgba(255,255,255,.74);
    }

    /* faq */
    .faq-wrap {
        max-width: 900px;
    }
    .faq-item {
        background: #fff;
        border: 1px solid #E9EDF2;
        border-radius: 12px;
        margin-bottom: 12px;
        overflow: hidden;
        transition: box-shadow .2s ease;
    }
    .faq-item.active {
        box-shadow: 0 8px 20px -10px rgba(21,99,192,.14);
        border-color: #CFE0F0;
    }
    .faq-q {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        padding: 19px 22px;
        font-weight: 600;
        font-size: 16px;
        color: var(--text);
        cursor: pointer;
        transition: color .2s ease;
        line-height: 1.5;
    }
    .faq-q:hover {
        color: var(--primary);
    }
    .faq-item.active .faq-q {
        color: var(--primary);
    }
    .faq-icon {
        width: 22px;
        height: 22px;
        border-radius: 50%;
        background: var(--primary-soft);
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 17px;
        flex-shrink: 0;
        line-height: 1;
        transform: rotate(0deg);
        transition: transform .25s ease;
    }
    .faq-item.active .faq-icon {
        transform: rotate(45deg);
    }
    .faq-a {
        display: none;
        padding: 0 22px 20px;
        color: var(--text-sub);
        line-height: 1.8;
        font-size: 15px;
    }
    .faq-item.active .faq-a {
        display: block;
    }

    /* CTA */
    .cta-strip {
        background: linear-gradient(135deg, #E9F2FB 0%, #DCEAFA 100%);
        border-radius: 20px;
        padding: 58px 50px;
        display: flex;
        align-items: center;
        gap: 32px;
        justify-content: space-between;
        position: relative;
        overflow: hidden;
        border: 1px solid #DDECF7;
    }
    .cta-strip::after {
        content: "";
        position: absolute;
        right: -80px;
        top: -100px;
        width: 280px;
        height: 280px;
        background: radial-gradient(circle, rgba(21,99,192,.10) 0%, transparent 65%);
        border-radius: 50%;
        pointer-events: none;
    }
    .cta-title {
        font-size: 30px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text);
        letter-spacing: -.01em;
        margin-bottom: 12px;
    }
    .cta-sub {
        color: var(--text-sub);
        font-size: 16px;
        line-height: 1.75;
        max-width: 650px;
    }

    /* footer */
    .footer {
        background: #fff;
        border-top: 1px solid var(--border);
        margin-top: 40px;
        padding-top: 54px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 40px;
        padding-bottom: 42px;
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 14px;
    }
    .footer-desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.75;
        max-width: 315px;
    }
    .footer-col-title {
        font-size: 15px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 16px;
    }
    .footer-col a,
    .footer-col span {
        display: block;
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 11px;
        line-height: 1.6;
        transition: color .2s ease;
    }
    .footer-col a:hover {
        color: var(--primary);
    }
    .footer-bottom {
        border-top: 1px solid #F0F2F5;
        padding: 20px 0;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 10px;
        color: var(--text-light);
        font-size: 13px;
    }

    /* 移动端底部固定条 */
    .bottom-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 60;
        background: rgba(255,255,255,.96);
        backdrop-filter: blur(8px);
        border-top: 1px solid var(--border);
        box-shadow: 0 -10px 30px rgba(16,24,40,.1);
        transform: translateY(0);
        transition: transform .3s ease;
    }
    .bottom-bar.hide {
        transform: translateY(100%);
    }
    .bar-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        height: 68px;
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 18px;
    }
    .bar-text {
        font-size: 14px;
        color: var(--text);
        font-weight: 500;
        line-height: 1.4;
    }
    .bar-text small {
        display: block;
        color: var(--text-light);
        font-weight: 400;
        font-size: 12px;
    }
    .bar-actions {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .bar-close {
        width: 32px;
        height: 32px;
        background: transparent;
        border: none;
        color: var(--text-light);
        cursor: pointer;
        border-radius: 50%;
        transition: all .2s ease;
    }
    .bar-close:hover {
        background: #F2F4F7;
        color: var(--text);
    }
    .btn-sm {
        height: 38px;
        padding: 0 16px;
        border-radius: 7px;
        font-size: 14px;
    }

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

    /* 响应式 */
    @media (max-width: 1024px) {
        .main-nav,
        .header-actions .hot-chip,
        .header-actions .search-link {
            display: none;
        }
        .burger-btn {
            display: inline-flex;
        }
        .hero-inner {
            grid-template-columns: 1fr;
            padding-top: 52px;
            padding-bottom: 56px;
        }
        .feature-grid {
            grid-template-columns: 1fr 1fr;
        }
        .flow-content {
            grid-template-columns: 1fr;
            gap: 34px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .trust-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 767px) {
        .section {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .section-title {
            font-size: 25px;
        }
        .section-head {
            margin-bottom: 28px;
        }
        .logo {
            font-size: 20px;
        }
        .hero-inner {
            gap: 34px;
        }
        .hero-title {
            font-size: 32px;
        }
        .hero-card img {
            height: 220px;
        }
        .feature-grid,
        .news-grid {
            grid-template-columns: 1fr;
        }
        .news-cover {
            height: 180px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 26px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            padding-bottom: 90px;
        }
        .trust-line {
            padding: 28px 22px;
        }
        .trust-grid {
            grid-template-columns: 1fr 1fr;
        }
        .trust-item {
            padding: 16px 12px;
        }
        .trust-item .trust-num {
            font-size: 25px;
        }
        .cta-strip {
            flex-direction: column;
            padding: 36px 22px;
            align-items: flex-start;
        }
        .cta-title {
            font-size: 25px;
        }
        .bar-text {
            display: none;
        }
        .bar-inner {
            justify-content: center;
            padding: 0 12px;
            height: 62px;
        }
        .bar-actions .btn {
            width: min(88vw, 360px);
        }
        .btn {
            height: 42px;
            padding: 0 18px;
        }
        .section-bar {
            flex-direction: column;
            align-items: flex-start;
            margin-bottom: 22px;
        }
    }

    @media (max-width: 520px) {
        .hero-actions {
            flex-direction: column;
            width: 100%;
        }
        .hero-actions .btn {
            width: 100%;
        }
        .feature-split {
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-split img {
            width: 100%;
            height: 160px;
        }
        .faq-q {
            padding: 16px 16px;
            font-size: 15px;
        }
    }

/* roulang page: category1 */
:root {
        --primary: #1563C0;
        --primary-dark: #0F4C95;
        --primary-light: #E8F0F8;
        --accent: #E4571B;
        --accent-dark: #C94712;
        --text: #101828;
        --text-sub: #475467;
        --text-faint: #667085;
        --bg: #F6F9FC;
        --line: #E4E7EC;
        --radius-card: 12px;
        --radius-img: 16px;
        --shadow-card: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .1);
        --shadow-hover: 0 12px 24px -8px rgba(21, 99, 192, .14);
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--text);
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

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

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

    button,
    input,
    textarea {
        font-family: inherit;
    }

    .container {
        width: 100%;
        max-width: 1240px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        height: 68px;
        background: #fff;
        border-bottom: 1px solid var(--line);
        transition: box-shadow .3s ease;
    }

    .site-header.scrolled {
        box-shadow: 0 6px 18px rgba(16, 24, 40, .06);
    }

    .nav-wrap {
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }

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

    .logo-badge {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--primary);
        color: #fff;
        font-weight: 800;
        font-size: 16px;
        letter-spacing: .02em;
    }

    .logo-text-line {
        display: inline-flex;
        flex-direction: column;
        line-height: 1.15;
    }

    .logo-text-line span:first-child {
        font-size: 20px;
        font-weight: 800;
        color: var(--text);
        letter-spacing: .01em;
    }

    .logo-sub {
        font-size: 12px;
        font-weight: 500;
        color: var(--primary);
        letter-spacing: .08em;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 30px;
        margin: 0 auto 0 34px;
    }

    .nav-link {
        position: relative;
        font-size: 15px;
        font-weight: 500;
        color: var(--text);
        padding: 22px 0 18px;
        white-space: nowrap;
        transition: color .2s ease;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 2px;
        background: var(--primary);
        transform: scaleX(0);
        transform-origin: center;
        transition: transform .25s ease;
    }

    .nav-link:hover,
    .nav-link:focus-visible {
        color: var(--primary);
        outline: none;
    }

    .nav-link.active {
        color: var(--primary);
        font-weight: 600;
    }

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

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .hot-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 32px;
        padding: 0 12px 0 7px;
        border-radius: 999px;
        background: #FFF4EC;
        border: 1px solid #F7D6C4;
        font-size: 13px;
        font-weight: 600;
        color: var(--accent-dark);
        transition: border-color .2s ease, background .2s ease;
    }

    .hot-chip:hover,
    .hot-chip:focus-visible {
        background: #FDE8DB;
        border-color: var(--accent);
        outline: none;
    }

    .hot-dot {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 20px;
        padding: 0 7px;
        border-radius: 999px;
        background: var(--accent);
        color: #fff;
        font-size: 11px;
        font-weight: 700;
    }

    .burger-btn {
        display: none;
        width: 40px;
        height: 40px;
        border: 0;
        border-radius: 8px;
        background: transparent;
        align-items: center;
        justify-content: center;
        color: var(--text);
        cursor: pointer;
        transition: background .2s ease;
    }

    .burger-btn:hover {
        background: var(--brand-light);
    }

    .section-pad {
        padding-top: 72px;
        padding-bottom: 72px;
    }

    .bg-paper {
        background: var(--bg);
    }

    .crumb-line {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 14px;
        color: var(--text-faint);
    }

    .crumb-line a {
        color: var(--text-sub);
        transition: color .2s ease;
    }

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

    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 700;
        letter-spacing: .12em;
        color: var(--primary);
        margin-bottom: 10px;
    }

    .section-title {
        font-size: 30px;
        line-height: 1.25;
        font-weight: 700;
        color: var(--text);
        letter-spacing: -.01em;
        margin: 0 0 12px;
    }

    .section-desc {
        font-size: 16px;
        color: var(--text-sub);
        max-width: 680px;
        margin: 0;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 44px;
        padding: 0 22px;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 600;
        border: 1px solid transparent;
        cursor: pointer;
        transition: all .2s ease;
        white-space: nowrap;
    }

    .btn:focus-visible {
        outline: 3px solid rgba(21, 99, 192, .3);
        outline-offset: 2px;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }

    .btn-primary:hover {
        background: var(--primary-dark);
        border-color: var(--primary-dark);
        box-shadow: var(--shadow-hover);
        transform: translateY(-1px);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-accent {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
    }

    .btn-accent:hover {
        background: var(--accent-dark);
        border-color: var(--accent-dark);
        box-shadow: 0 10px 20px -8px rgba(228, 87, 27, .35);
        transform: translateY(-1px);
    }

    .btn-outline {
        background: #fff;
        color: var(--text);
        border-color: #D0D5DD;
    }

    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: #FDFEFF;
        transform: translateY(-1px);
    }

    .card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        transition: box-shadow .25s ease, transform .25s ease;
    }

    .card-hover:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }

    .tag {
        display: inline-flex;
        align-items: center;
        min-height: 26px;
        padding: 0 12px;
        gap: 4px;
        border-radius: 999px;
        background: var(--brand-light);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        white-space: nowrap;
    }

    .hero-block {
        position: relative;
        overflow: hidden;
        padding: 64px 0 64px;
        background:
            linear-gradient(120deg, rgba(246, 249, 252, .96) 0%, rgba(232, 240, 248, .72) 55%, rgba(232, 240, 248, .38) 100%);
        border-bottom: 1px solid var(--line);
    }

    .hero-block::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image: url("/assets/images/backpic/back-2.webp");
        background-position: center right;
        background-size: cover;
        opacity: .12;
        pointer-events: none;
    }

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

    .news-thumb {
        border-radius: var(--radius-img);
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .media-card {
        position: relative;
        border-radius: var(--radius-img);
        overflow: hidden;
        border: 1px solid var(--line);
        background: var(--primary-light);
    }

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

    .list-check {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 8px 0;
    }

    .list-check-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        flex-shrink: 0;
        margin-top: 4px;
        font-size: 11px;
    }

    .feature-card {
        border-radius: var(--radius-card);
        background: #fff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow-card);
        padding: 22px;
        transition: box-shadow .25s ease, transform .25s ease;
    }

    .feature-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }

    .chip-row {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .soft-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 36px;
        padding: 0 14px;
        border-radius: 999px;
        background: #fff;
        border: 1px solid var(--line);
        color: var(--text-sub);
        font-size: 14px;
        font-weight: 500;
        transition: all .2s ease;
    }

    .soft-chip:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: #F8FBFF;
    }

    .step-num {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--primary);
        color: #fff;
        font-weight: 700;
        font-size: 15px;
    }

    .stat-box {
        text-align: center;
        padding: 22px 12px;
    }

    .stat-num {
        font-size: 32px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
    }

    .stat-label {
        margin-top: 6px;
        font-size: 14px;
        color: var(--text-faint);
    }

    .faq-item {
        border: 1px solid var(--line);
        border-radius: 12px;
        background: #fff;
        overflow: hidden;
        transition: box-shadow .22s ease;
    }

    .faq-item:hover {
        box-shadow: var(--shadow-card);
    }

    .faq-q {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        background: transparent;
        border: 0;
        text-align: left;
        padding: 18px 20px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        transition: color .2s ease;
    }

    .faq-q:hover,
    .faq-q:focus-visible {
        color: var(--primary);
        outline: none;
    }

    .faq-arrow {
        transition: transform .25s ease;
        color: var(--text-faint);
        flex-shrink: 0;
    }

    .faq-item.open .faq-arrow {
        transform: rotate(180deg);
        color: var(--primary);
    }

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

    .faq-a-inner {
        padding: 0 20px 18px;
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.8;
    }

    .cta-panel {
        background: linear-gradient(135deg, #F0F7FF 0%, #E3EEFA 100%);
        border: 1px solid #D6E6F5;
        border-radius: 20px;
        overflow: hidden;
        position: relative;
    }

    .cta-panel-inner {
        padding: 52px 48px;
        position: relative;
        z-index: 2;
    }

    .footer {
        background: #fff;
        border-top: 1px solid var(--line);
        padding: 56px 0 28px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr .9fr .9fr 1.1fr;
        gap: 36px;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 12px;
    }

    .footer-desc {
        font-size: 14px;
        line-height: 1.85;
        color: var(--text-faint);
        max-width: 360px;
        margin: 0;
    }

    .footer-col-title {
        font-size: 15px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 12px;
    }

    .footer-col {
        display: flex;
        flex-direction: column;
        gap: 10px;
        font-size: 14px;
        color: var(--text-sub);
    }

    .footer-col a {
        transition: color .2s ease;
        width: fit-content;
    }

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

    .footer-bottom {
        margin-top: 46px;
        padding-top: 20px;
        border-top: 1px solid var(--line);
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 10px;
        font-size: 13px;
        color: var(--text-faint);
    }

    .sticky-cta {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        border-top: 1px solid var(--line);
        box-shadow: 0 -8px 26px rgba(16, 24, 40, .08);
        z-index: 45;
        transform: translateY(0);
        transition: transform .3s ease;
    }

    .sticky-cta.close {
        transform: translateY(110%);
    }

    .sticky-cta-inner {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 18px;
        min-height: 62px;
        flex-wrap: wrap;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .sticky-cta p {
        margin: 0;
        font-size: 14px;
        color: var(--text-sub);
    }

    .btn-sm {
        height: 38px;
        padding: 0 18px;
        font-size: 14px;
    }

    .sticky-close {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        border: 0;
        background: #F2F4F7;
        color: var(--text-faint);
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        transition: background .2s ease, color .2s ease;
    }

    .sticky-close:hover {
        background: #E4E7EC;
        color: var(--text);
    }

    .focus-grid {
        display: grid;
        grid-template-columns: 1.35fr .85fr;
        gap: 24px;
    }

    .text-block {
        max-width: 720px;
    }

    .lead-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        margin: 14px 0 0;
        padding: 0;
        list-style: none;
    }

    .lead-list li {
        display: flex;
        align-items: flex-start;
        gap: 8px;
        font-size: 15px;
        color: var(--text-sub);
    }

    .lead-list li::before {
        content: "";
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        margin-top: 10px;
        flex-shrink: 0;
    }

    @media (max-width: 1100px) {
        .main-nav {
            gap: 18px;
            margin-left: 10px;
        }

        .hot-chip {
            display: none;
        }

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

    @media (max-width: 991px) {
        .main-nav {
            position: fixed;
            top: 68px;
            right: 0;
            width: 280px;
            max-width: 88vw;
            height: auto;
            margin: 0;
            background: #fff;
            border: 1px solid var(--line);
            border-right: 0;
            box-shadow: 0 18px 35px rgba(16, 24, 40, .12);
            border-radius: 16px 0 0 16px;
            padding: 18px 16px;
            flex-direction: column;
            align-items: stretch;
            gap: 2px;
            transform: translateX(105%);
            transition: transform .3s ease;
            display: flex;
        }

        .main-nav.open {
            transform: translateX(0);
        }

        .main-nav .nav-link {
            display: block;
            padding: 12px 10px;
            border-radius: 8px;
            font-size: 15px;
            white-space: normal;
        }

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

        .main-nav .nav-link.active,
        .main-nav .nav-link:hover {
            background: var(--brand-light);
            color: var(--primary);
        }

        .burger-btn {
            display: inline-flex;
        }

        .hero-block {
            padding: 48px 0 56px;
        }

        .section-pad {
            padding-top: 56px;
            padding-bottom: 56px;
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .cta-panel-inner {
            padding: 36px 28px;
        }
    }

    @media (max-width: 640px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }

        .logo-text-line span:first-child {
            font-size: 18px;
        }

        .logo-sub {
            font-size: 11px;
        }

        .section-title {
            font-size: 24px;
        }

        .stat-box {
            padding: 16px 8px;
        }

        .stat-num {
            font-size: 26px;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }

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

        .sticky-cta p {
            display: none;
        }

        .sticky-cta-inner {
            justify-content: flex-end;
            gap: 10px;
        }

        .sticky-cta-inner .btn {
            flex: 1;
        }

        .cta-panel-inner {
            padding: 32px 20px;
        }
    }

/* roulang page: article */
:root {
            --primary: #1563C0;
            --primary-dark: #0F4C95;
            --primary-light: #E8F0F8;
            --accent: #E4571B;
            --accent-dark: #C94712;
            --ink: #101828;
            --text-body: #475467;
            --muted: #667085;
            --line: #E4E7EC;
            --bg: #F6F9FC;
            --card: #FFFFFF;
            --radius: 12px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #ffffff;
            border-bottom: 1px solid #edf0f5;
            box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
            min-height: 64px;
        }

        .site-header .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            gap: 16px;
        }

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

        .logo-badge {
            background: var(--primary-dark);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -.02em;
        }

        .logo-text-line {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .logo-text-line > span:first-child {
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
        }

        .logo-sub {
            font-size: 11px;
            color: var(--muted);
            letter-spacing: .04em;
            font-weight: 600;
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 6px;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }

        .nav-link {
            position: relative;
            padding: 20px 14px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            transition: color .18s ease;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 10px;
            height: 2px;
            border-radius: 2px;
            background: transparent;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after,
        .nav-link:hover::after {
            background: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hot-chip {
            display: none;
            align-items: center;
            gap: 6px;
            background: #FFF7F3;
            border: 1px solid #FBE0D5;
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 12px;
            border-radius: 999px;
            transition: border-color .2s, background .2s;
            white-space: nowrap;
        }

        .hot-chip:hover {
            border-color: var(--accent);
            background: #fff;
        }

        .hot-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 18px;
            height: 18px;
            padding: 0 4px;
            font-size: 11px;
            font-weight: 800;
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
        }

        @media (min-width: 640px) {
            .hot-chip {
                display: inline-flex;
            }
        }

        .burger-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            color: var(--ink);
        }

        @media (min-width: 1024px) {
            .burger-btn {
                display: none;
            }
        }

        .burger-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(16, 24, 40, .35);
            z-index: 60;
            opacity: 0;
            visibility: hidden;
            transition: opacity .25s ease, visibility .25s ease;
        }

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

        .mobile-nav {
            position: fixed;
            top: 0;
            right: 0;
            width: min(320px, 84vw);
            height: 100%;
            background: #fff;
            z-index: 70;
            transform: translateX(105%);
            transition: transform .28s ease;
            padding: 20px 18px;
            overflow-y: auto;
        }

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

        .mobile-nav-brand {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 16px;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--line);
        }

        .mobile-link-row {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-link-row a {
            display: block;
            padding: 12px 8px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
        }

        .mobile-link-row a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-nav-foot {
            margin-top: 20px;
            padding: 14px;
            background: #FFF7F3;
            border: 1px solid #FBE0D5;
            border-radius: 12px;
            color: var(--accent-dark);
            font-size: 13px;
        }

        .close-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border: none;
            border-radius: 8px;
            background: #f2f4f7;
            color: var(--ink);
        }

        .close-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .section {
            padding: 64px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 88px 0;
            }
        }

        .article-hero {
            background:
                radial-gradient(circle at 78% 20%, rgba(232, 240, 248, .88), transparent 32%),
                linear-gradient(180deg, #ffffff 0%, #EAF2FA 100%);
            padding: 48px 0 64px;
            border-bottom: 1px solid #e6ecf3;
            position: relative;
            overflow: hidden;
        }

        .article-hero:before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center 32%;
            opacity: .06;
            pointer-events: none;
        }

        .article-hero .container {
            position: relative;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 28px;
        }

        .breadcrumb-nav a {
            color: var(--primary);
            font-weight: 600;
        }

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

        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 5px 13px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .article-tag.plain {
            background: var(--primary-light);
            color: var(--primary);
        }

        .article-title {
            margin: 0 0 14px;
            color: var(--ink);
            font-size: 32px;
            line-height: 1.3;
            font-weight: 800;
            max-width: 900px;
            letter-spacing: -.01em;
        }

        @media (min-width: 768px) {
            .article-title {
                font-size: 44px;
                line-height: 1.24;
            }
        }

        .article-summary {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 840px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 13px;
            color: var(--muted);
        }

        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-divider {
            width: 36px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 18px 0 0;
        }

        .content-wrap {
            max-width: 1160px;
            margin: 0 auto;
        }

        .article-paper {
            background: #fff;
            border: 1px solid #eef1f5;
            border-radius: 18px;
            box-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .08);
            padding: 24px 18px 36px;
            margin-top: -30px;
            position: relative;
        }

        @media (min-width: 768px) {
            .article-paper {
                padding: 48px;
            }
        }

        .article-cover {
            border-radius: 14px;
            overflow: hidden;
            margin: 4px 0 32px;
            border: 1px solid #edf0f5;
        }

        .article-cover img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            aspect-ratio: 16 / 7;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: #344054;
            letter-spacing: .005em;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }

        .article-body h2 {
            font-size: 24px;
            color: var(--ink);
            font-weight: 800;
            line-height: 1.4;
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }

        .article-body h3 {
            font-size: 19px;
            color: var(--ink);
            font-weight: 700;
            line-height: 1.5;
            margin: 34px 0 12px;
        }

        .article-body p {
            margin: 0 0 20px;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(21, 99, 192, .3);
            transition: border-color .2s, color .2s;
        }

        .article-body a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 22px;
            padding-left: 22px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
        }

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

        .article-body blockquote {
            margin: 28px 0;
            padding: 18px 20px;
            background: var(--primary-light);
            border-radius: 12px;
            border-left: 4px solid var(--primary);
            color: #1D3A5C;
            font-size: 15px;
        }

        .article-body img {
            border-radius: 12px;
            border: 1px solid #e9eef4;
            margin: 24px 0;
            height: auto;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            display: block;
            max-width: 100%;
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid var(--line);
            padding: 10px 12px;
            text-align: left;
            white-space: nowrap;
        }

        .article-body code {
            background: #f2f4f7;
            border: 1px solid #e6e9ef;
            border-radius: 6px;
            padding: 2px 6px;
            font-size: 14px;
            word-break: break-all;
        }

        .article-body pre {
            background: #101828;
            color: #E4E7EC;
            padding: 18px;
            border-radius: 12px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 24px 0;
        }

        .empty-state-card {
            text-align: center;
            padding: 56px 24px;
            background: #fff;
            border: 1px solid #eef1f5;
            border-radius: 16px;
            box-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .08);
            margin-top: -22px;
            position: relative;
        }

        .empty-state-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 16px;
            margin: 0 auto 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 30px;
            font-weight: 800;
        }

        .empty-state-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .empty-state-text {
            color: var(--muted);
            max-width: 460px;
            margin: 0 auto 24px;
        }

        .article-end-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 14px;
            max-width: 760px;
            margin: 30px auto 0;
            padding-top: 24px;
            border-top: 1px solid var(--line);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            border: 1px solid transparent;
            transition: all .18s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 1px 2px rgba(16, 24, 40, .1);
        }

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

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

        .btn-outline {
            border-color: #D0D5DD;
            background: #fff;
            color: var(--ink);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
        }

        .channels-preview {
            background: var(--bg);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }

        .section-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--ink);
            margin: 0;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 34px;
            }
        }

        .section-desc {
            color: var(--muted);
            max-width: 640px;
            font-size: 15px;
            margin: 8px 0 0;
        }

        .channel-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid #eef1f5;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .08);
            transition: box-shadow .22s ease, transform .22s ease;
            height: 100%;
        }

        .channel-card:hover {
            box-shadow: 0 12px 24px -8px rgba(21, 99, 192, .14);
            transform: translateY(-2px);
        }

        .channel-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }

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

        .channel-card:hover .channel-thumb img {
            transform: scale(1.03);
        }

        .channel-thumb .thumb-tag {
            position: absolute;
            left: 12px;
            top: 12px;
            background: rgba(255, 255, 255, .92);
            border: 1px solid rgba(21, 99, 192, .18);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

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

        .channel-card-title {
            font-size: 18px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .channel-card-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .channel-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-top: auto;
        }

        .channel-card-link:hover {
            color: var(--accent);
        }

        .cta-band {
            background: linear-gradient(145deg, #ffffff, #EAF2FA);
            border-top: 1px solid #dfe8f2;
            border-bottom: 1px solid #dfe8f2;
        }

        .cta-panel {
            border: 1px solid rgba(21, 99, 192, .2);
            background: #fff;
            border-radius: 20px;
            padding: 28px;
            box-shadow: 0 12px 28px -10px rgba(21, 99, 192, .12);
        }

        @media (min-width: 768px) {
            .cta-panel {
                padding: 44px 48px;
            }
        }

        .cta-grid {
            display: grid;
            gap: 24px;
            align-items: center;
        }

        @media (min-width: 900px) {
            .cta-grid {
                grid-template-columns: 1fr auto;
            }
        }

        .cta-title {
            font-size: 22px;
            line-height: 1.4;
            font-weight: 800;
            color: var(--ink);
            margin: 0 0 8px;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 26px;
            }
        }

        .cta-desc {
            color: var(--muted);
            font-size: 15px;
            margin: 0;
        }

        .cta-stack {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .service-points {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            max-width: 900px;
            margin-top: 20px;
        }

        @media (min-width: 640px) {
            .service-points {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .service-point {
            background: #fff;
            border: 1px solid #e6edf6;
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 14px;
            color: var(--ink);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .service-point i {
            color: var(--primary);
        }

        .footer {
            background: #101828;
            color: #C9D4E2;
            padding: 56px 0 0;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            gap: 34px;
            padding-bottom: 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
                gap: 28px;
            }
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .footer-brand .logo-badge {
            background: var(--primary);
            width: 38px;
            height: 38px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #93A4B8;
            max-width: 340px;
            margin: 0;
        }

        .footer-col-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 9px;
            font-size: 14px;
            color: #93A4B8;
        }

        .footer-col a {
            color: #93A4B8;
            transition: color .2s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0 28px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #74869B;
        }

        .bottom-fixed-cta {
            position: fixed;
            z-index: 40;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--line);
            box-shadow: 0 -4px 16px rgba(16, 24, 40, .07);
            opacity: 0;
            visibility: hidden;
            transform: translateY(16px);
            transition: opacity .24s ease, transform .24s ease, visibility .24s ease;
        }

        .bottom-fixed-cta.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .bottom-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            min-height: 56px;
            padding: 8px 12px;
        }

        @media (min-width: 640px) {
            .bottom-cta-inner {
                min-height: 60px;
            }
        }

        .bottom-cta-text {
            font-size: 14px;
            color: var(--ink);
            font-weight: 600;
            display: none;
        }

        @media (min-width: 640px) {
            .bottom-cta-text {
                display: block;
            }
        }

        .bottom-cta-inner .btn {
            height: 40px;
            font-size: 14px;
        }

        .bottom-cta-close {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border: none;
            background: transparent;
            border-radius: 8px;
            color: var(--muted);
        }

        .bottom-cta-close:hover {
            background: #f2f4f7;
            color: var(--ink);
        }

        body.has-bottom-cta {
            padding-bottom: 64px;
        }

        @media (max-width: 1023px) {
            .main-nav {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .article-paper {
                padding: 20px 14px 28px;
            }
            .article-title {
                font-size: 26px;
            }
            .section-head {
                align-items: flex-start;
            }
            .cta-price-row,
            .article-meta-row {
                gap: 10px;
            }
            .logo-text-line > span:first-child {
                font-size: 17px;
            }
            .logo-badge {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1563C0;
            --primary-deep: #0F4C95;
            --primary-soft: #E8F0F8;
            --accent: #E4571B;
            --accent-deep: #C94712;
            --bg: #F6F9FC;
            --surface: #FFFFFF;
            --heading: #101828;
            --body: #475467;
            --muted: #667085;
            --line: #E4E7EC;
            --shadow-sm: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .1);
            --shadow-md: 0 8px 16px -6px rgba(21, 99, 192, .14);
            --shadow-lg: 0 12px 24px -8px rgba(21, 99, 192, .14);
            --radius: 12px;
            --radius-lg: 16px;
            --radius-sm: 8px;
            --container: 1240px;
        }
        * {
            box-sizing: border-box;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--heading);
            background: var(--bg);
            padding-bottom: 76px;
            -webkit-font-smoothing: antialiased;
        }
        body.menu-open {
            overflow: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            width: min(100% - 48px, var(--container));
            margin-inline: auto;
        }
        .section {
            padding: 84px 0;
        }
        .section-head {
            margin-bottom: 46px;
            max-width: 760px;
        }
        .sec-no {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: .08em;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .sec-no::after {
            content: " /";
            letter-spacing: 0;
            color: var(--accent);
        }
        .section-head h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 14px;
            color: var(--heading);
        }
        .section-head p,
        .section-desc {
            color: var(--body);
            font-size: 16px;
            line-height: 1.8;
            margin: 0;
        }

        /* buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 22px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .15s ease;
        }
        .btn:hover {
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(21, 99, 192, .18);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-deep);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        .btn-outline {
            background: var(--surface);
            border-color: #D0D5DD;
            color: var(--heading);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-deep);
            color: #fff;
        }
        .btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: 7px;
        }

        /* header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .96);
            height: 64px;
            border-bottom: 1px solid var(--line);
            transition: box-shadow .25s ease;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 22px;
            height: 64px;
            position: relative;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--heading);
            font-weight: 800;
        }
        .logo-badge {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            letter-spacing: .02em;
            font-size: 13px;
            line-height: 1;
        }
        .logo-text-line {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text-line span:first-child {
            font-size: 17px;
            font-weight: 800;
            color: var(--heading);
        }
        .logo-sub {
            font-size: 11px;
            font-weight: 600;
            color: var(--muted);
            letter-spacing: .3px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 8px;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 64px;
            padding: 0 12px;
            color: var(--heading);
            font-weight: 600;
            font-size: 15px;
            transition: color .2s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 12px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transition: transform .22s ease;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .header-actions {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hot-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            height: 34px;
            padding: 0 13px 0 7px;
            background: var(--primary-soft);
            color: var(--primary-deep);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            transition: background .2s ease, color .2s ease;
        }
        .hot-chip:hover {
            background: #DCE8F4;
            color: var(--primary-deep);
        }
        .hot-dot {
            background: var(--accent);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 24px;
            height: 20px;
            padding: 0 5px;
            border-radius: 999px;
            font-size: 11px;
            font-weight: 700;
            line-height: 1;
        }
        .burger-btn {
            display: none;
            width: 36px;
            height: 36px;
            border: 1px solid var(--line);
            border-radius: 8px;
            background: var(--surface);
            color: var(--heading);
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .burger-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* page hero */
        .page-hero {
            position: relative;
            background: linear-gradient(128deg, rgba(255, 255, 255, .95) 0%, rgba(236, 244, 252, .88) 100%), url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
            border-bottom: 1px solid var(--line);
            padding: 64px 0 76px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 22px;
        }
        .breadcrumb a {
            color: var(--muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--heading);
            font-weight: 600;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr);
            gap: 44px;
            align-items: center;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 6px 12px;
            background: var(--primary-soft);
            border-radius: 999px;
            color: var(--primary-deep);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .eyebrow::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
        }
        .page-hero h1 {
            font-size: 46px;
            line-height: 1.16;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--heading);
            margin: 0 0 16px;
        }
        .lead {
            font-size: 17px;
            line-height: 1.85;
            color: var(--body);
            max-width: 36em;
            margin: 0 0 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 26px;
            margin: 0;
            padding: 22px 0 0;
            list-style: none;
            border-top: 1px solid rgba(21, 99, 192, .12);
        }
        .hero-points li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--body);
            font-size: 14px;
            font-weight: 500;
        }
        .point-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 18px;
            height: 18px;
            background: #067647;
            border-radius: 50%;
            color: #fff;
            font-size: 11px;
            line-height: 1;
            flex: none;
        }
        .hero-card {
            background: rgba(255, 255, 255, .86);
            border: 1px solid #DFEAF7;
            border-radius: 18px;
            box-shadow: var(--shadow-lg);
            padding: 28px;
        }
        .hero-card h2 {
            font-size: 18px;
            margin: 0 0 16px;
            color: var(--heading);
            line-height: 1.4;
        }
        .hero-list {
            list-style: none;
            margin: 0 0 22px;
            padding: 0;
        }
        .hero-list li {
            position: relative;
            padding: 8px 0 8px 28px;
            color: var(--body);
            font-size: 14px;
            line-height: 1.7;
            border-bottom: 1px dashed #EDF1F6;
        }
        .hero-list li:last-child {
            border-bottom: 0;
        }
        .hero-list li::before {
            content: "→";
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--primary);
            font-weight: 700;
        }
        .hero-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
        }

        /* steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .step-card {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
        }
        .step-card:hover {
            transform: translateY(-3px);
            border-color: rgba(21, 99, 192, .25);
            box-shadow: var(--shadow-lg);
        }
        .step-index {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            margin-bottom: 16px;
        }
        .step-card h3 {
            font-size: 17px;
            margin: 0 0 8px;
            color: var(--heading);
        }
        .step-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--body);
            margin: 0;
        }

        /* feature */
        .feature-wrap {
            display: grid;
            grid-template-columns: minmax(0, 1.16fr) minmax(300px, .84fr);
            gap: 24px;
            align-items: stretch;
        }
        .feature-main {
            display: grid;
            grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .feature-media {
            background: #DCE9F7;
            min-height: 280px;
        }
        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-body {
            padding: 34px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-body .tag {
            align-self: flex-start;
            margin-bottom: 14px;
        }
        .feature-body h3 {
            font-size: 22px;
            line-height: 1.4;
            margin: 0 0 12px;
            color: var(--heading);
        }
        .feature-body p {
            color: var(--body);
            font-size: 15px;
            line-height: 1.8;
            margin: 0 0 16px;
        }
        .feature-body ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .feature-body li {
            position: relative;
            padding: 5px 0 5px 24px;
            color: var(--body);
            font-size: 14px;
        }
        .feature-body li::before {
            content: "";
            position: absolute;
            left: 4px;
            top: 13px;
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
        }
        .feature-aside {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .side-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px 26px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .2s ease;
        }
        .side-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .side-card .tag {
            margin-bottom: 12px;
        }
        .side-card h3 {
            font-size: 18px;
            line-height: 1.4;
            margin: 0 0 8px;
        }
        .side-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--body);
            margin: 0;
        }
        .link-card {
            background: linear-gradient(140deg, #F0F6FD, #FFFFFF);
            border: 1px solid #DFEAF7;
            border-radius: var(--radius);
            padding: 22px 24px;
        }
        .link-card h3 {
            font-size: 16px;
            margin: 0 0 6px;
            color: var(--heading);
        }
        .link-card p {
            color: var(--body);
            font-size: 14px;
            margin: 0 0 14px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-soft);
            color: var(--primary-deep);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .03em;
        }
        .tag-accent {
            background: #FDE8DD;
            color: var(--accent-deep);
        }

        /* scope */
        .scope-wrap {
            background: linear-gradient(135deg, #EFF5FB, #FFFFFF);
            border: 1px solid #DFEAF7;
            border-radius: 20px;
            padding: 44px;
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 28px 36px;
        }
        .scope-block-main {
            grid-column: span 6;
        }
        .scope-block-sub {
            grid-column: span 6;
        }
        .scope-block-wide {
            grid-column: span 12;
            border-top: 1px solid #DDE8F3;
            padding-top: 26px;
        }
        .scope-block-main h3 {
            font-size: 20px;
            margin: 0 0 12px;
        }
        .scope-block-main p,
        .scope-block-sub p {
            color: var(--body);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
        }
        .scope-rows {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .scope-row {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--surface);
            border: 1px solid var(--line);
            padding: 14px 16px;
            border-radius: 10px;
        }
        .scope-row-dot {
            flex: none;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
        }
        .scope-row strong {
            display: block;
            color: var(--heading);
            font-size: 14px;
        }
        .scope-row span {
            color: var(--body);
            font-size: 14px;
            line-height: 1.7;
        }
        .blockquote-note {
            margin: 0;
            display: flex;
            gap: 16px;
            background: rgba(255, 255, 255, .65);
            border: 1px solid #EDF2F7;
            border-radius: 12px;
            padding: 18px 22px;
        }
        .blockquote-note::before {
            content: "提示";
            flex: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 26px;
            padding: 0 10px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            border-radius: 999px;
            font-weight: 700;
        }
        .blockquote-note p {
            color: var(--body);
            font-size: 14px;
            line-height: 1.75;
            margin: 0;
        }

        /* bridge */
        .bridge-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .bridge-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 28px 26px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .bridge-card:nth-child(2) {
            border-top: 3px solid var(--primary);
        }
        .bridge-card:nth-child(1) {
            border-top: 3px solid var(--accent);
        }
        .bridge-card:nth-child(3) {
            border-top: 3px solid #067647;
        }
        .bridge-card .step-index {
            background: var(--surface);
            color: var(--primary);
            border: 1px solid var(--primary);
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .bridge-card h3 {
            font-size: 18px;
            margin: 0 0 10px;
            color: var(--heading);
        }
        .bridge-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--body);
            margin: 0;
        }
        .chips-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
            align-items: center;
        }
        .chips-label {
            color: var(--body);
            font-size: 14px;
            font-weight: 600;
            margin-right: 4px;
        }
        .channel-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            background: var(--primary-soft);
            border-radius: 999px;
            color: var(--primary-deep);
            font-size: 14px;
            font-weight: 600;
            transition: background .2s ease, color .2s ease;
        }
        .channel-chip:hover {
            background: var(--primary);
            color: #fff;
        }

        /* faq */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .faq-item:hover {
            border-color: rgba(21, 99, 192, .24);
        }
        .faq-item.is-open {
            box-shadow: var(--shadow-sm);
            border-color: rgba(21, 99, 192, .35);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            background: transparent;
            border: 0;
            padding: 20px 24px;
            cursor: pointer;
            text-align: left;
            color: var(--heading);
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex: none;
            width: 26px;
            height: 26px;
            border: 1px solid var(--line);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-style: normal;
            transition: transform .25s ease, background .2s ease, color .2s ease;
        }
        .faq-item.is-open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--body);
            font-size: 15px;
            line-height: 1.85;
        }
        .faq-item.is-open .faq-answer {
            max-height: 300px;
        }

        /* cta */
        .cta-card {
            background: linear-gradient(135deg, #EFF6FF 0%, #FBFDFF 55%, #FFFFFF 100%);
            border: 1px solid #DDEAF6;
            border-radius: 24px;
            padding: 54px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 230px;
            height: 230px;
            background: radial-gradient(circle, rgba(228, 87, 27, .08) 0%, rgba(228, 87, 27, 0) 68%);
        }
        .cta-card h2 {
            font-size: 30px;
            line-height: 1.35;
            margin: 0 0 14px;
            color: var(--heading);
            letter-spacing: -0.01em;
            position: relative;
        }
        .cta-card p {
            max-width: 640px;
            margin: 0 auto 30px;
            color: var(--body);
            font-size: 16px;
            line-height: 1.85;
            position: relative;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            position: relative;
        }

        /* footer */
        .footer {
            background: #FFFFFF;
            border-top: 1px solid var(--line);
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.35fr;
            gap: 34px;
            padding-bottom: 40px;
            border-bottom: 1px solid #EDF1F6;
            margin-bottom: 24px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--heading);
        }
        .footer-desc {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            margin: 16px 0 0;
            max-width: 38em;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 16px;
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col a {
            color: var(--body);
            font-size: 14px;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-col span {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px 16px;
            color: var(--muted);
            font-size: 13px;
        }

        /* bottom bar */
        .bottom-bar {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 16px;
            z-index: 80;
            padding: 0 20px;
            transition: bottom .3s ease, opacity .3s ease;
            bottom: -90px;
            opacity: 0;
            pointer-events: none;
        }
        .bottom-bar.show {
            bottom: 16px;
            opacity: 1;
            pointer-events: auto;
        }
        .bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            max-width: 980px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 1px solid #DFEAF7;
            border-radius: 24px;
            padding: 9px 10px 9px 22px;
            box-shadow: 0 16px 40px -12px rgba(15, 76, 149, .22);
        }
        .bar-text {
            color: var(--heading);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            padding-right: 8px;
        }
        .bar-text small {
            display: block;
            color: var(--muted);
            font-weight: 400;
            font-size: 13px;
        }
        .bar-actions {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .bar-close {
            width: 36px;
            height: 36px;
            border: 1px solid var(--line);
            background: var(--surface);
            color: var(--muted);
            border-radius: 50%;
            font-size: 18px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            transition: border-color .2s, color .2s;
        }
        .bar-close:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* responsiveness */
        @media (max-width: 1023px) {
            .main-nav {
                position: fixed;
                left: 0;
                top: 64px;
                width: 100%;
                margin-left: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: stretch;
                padding: 14px 21px 24px;
                border-bottom: 1px solid var(--line);
                box-shadow: var(--shadow-lg);
                gap: 0;
                transform: translateY(-12px);
                opacity: 0;
                visibility: hidden;
                pointer-events: none;
                transition: transform .25s ease, opacity .22s ease, visibility .25s ease;
            }
            body.menu-open .main-nav {
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
            }
            .nav-link {
                width: 100%;
                height: auto;
                padding: 12px 0;
                border-bottom: 1px solid #F0F3F6;
            }
            .nav-link::after {
                display: none;
            }
            .burger-btn {
                display: inline-flex;
            }
            .hot-chip {
                display: none;
            }
            .section {
                padding: 68px 0;
            }
            .page-hero {
                padding: 48px 0 60px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-main {
                grid-template-columns: 1fr;
            }
            .feature-media {
                min-height: 220px;
                max-height: 300px;
            }
            .feature-wrap {
                grid-template-columns: 1fr;
            }
            .bridge-grid {
                grid-template-columns: 1fr;
            }
            .scope-wrap {
                grid-template-columns: 1fr;
                padding: 32px;
                gap: 24px;
            }
            .scope-block-main,
            .scope-block-sub,
            .scope-block-wide {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 26px;
            }
        }
        @media (max-width: 767px) {
            .container {
                width: calc(100% - 32px);
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .lead {
                font-size: 16px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 25px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .feature-body {
                padding: 26px 22px;
            }
            .scope-wrap {
                padding: 24px 18px;
            }
            .blockquote-note {
                flex-direction: column;
                gap: 6px;
            }
            .blockquote-note::before {
                align-self: flex-start;
            }
            .cta-card {
                padding: 40px 22px;
            }
            .cta-card h2 {
                font-size: 25px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
            .bar-text small {
                display: none;
            }
            .bar-text {
                font-size: 14px;
            }
            .bar-inner {
                padding: 8px 8px 8px 14px;
                border-radius: 18px;
            }
            .bar-inner .btn-sm {
                height: 36px;
                padding: 0 13px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .header-actions {
                gap: 6px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .points-wrap {
                gap: 6px;
            }
            .feature-main {
                border-radius: 12px;
            }
            .feature-body {
                padding: 22px 18px;
            }
            .hero-card {
                padding: 22px 18px;
            }
            .bridge-card {
                padding: 22px 18px;
            }
            .footer-bottom {
                align-items: flex-start;
            }
        }

/* roulang page: category3 */
:root {
        --primary: #1563C0;
        --primary-dark: #0F4C95;
        --primary-light: #E8F0F8;
        --accent: #E4571B;
        --accent-dark: #C94712;
        --ink: #101828;
        --sub: #475467;
        --faint: #667085;
        --line: #E4E7EC;
        --page: #F6F9FC;
        --card: #FFFFFF;
        --success: #067647;
        --danger: #B42318;
        --radius: 12px;
        --radius-lg: 16px;
        --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .1);
        --shadow-hover: 0 12px 24px -8px rgba(21, 99, 192, .14);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        font-size: 16px;
        line-height: 1.75;
        color: var(--ink);
        background: var(--page);
        -webkit-font-smoothing: antialiased;
        padding-bottom: 56px;
    }

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

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

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

    ul,
    ol {
        list-style: none;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
        outline: 3px solid rgba(21, 99, 192, .25);
        outline-offset: 2px;
    }

    .skip-link {
        position: fixed;
        top: -80px;
        left: 16px;
        z-index: 200;
        background: var(--primary);
        color: #fff;
        padding: 8px 14px;
        border-radius: 0 0 8px 8px;
        font-size: 14px;
        transition: top .2s ease;
    }

    .skip-link:focus {
        top: 0;
        color: #fff;
    }

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

    @media (max-width: 640px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
    }

    /* Header */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 80;
        background: rgba(255, 255, 255, .98);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
        backdrop-filter: blur(8px);
    }

    .nav-wrap {
        min-height: 64px;
        display: flex;
        align-items: center;
        gap: 24px;
        flex-wrap: nowrap;
        position: relative;
    }

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

    .logo-badge {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--primary);
        color: #fff;
        font-weight: 800;
        font-size: 15px;
        border-radius: 9px;
        letter-spacing: .02em;
        box-shadow: 0 2px 6px rgba(21, 99, 192, .24);
    }

    .logo-text-line {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .logo-text-line>span:first-child {
        font-size: 18px;
        font-weight: 800;
        color: var(--ink);
        letter-spacing: .01em;
    }

    .logo-sub {
        font-size: 11px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-light);
        padding: 2px 7px;
        border-radius: 999px;
        display: inline-block;
        align-self: flex-start;
        margin-top: 3px;
    }

    .main-nav {
        margin-left: auto;
        display: flex;
        align-items: center;
        gap: 28px;
    }

    .nav-link {
        position: relative;
        font-size: 15px;
        font-weight: 500;
        color: var(--sub);
        padding: 20px 0;
        line-height: 1;
        white-space: nowrap;
    }

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

    .nav-link.active {
        color: var(--primary);
        font-weight: 700;
    }

    .nav-link.active::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        height: 2px;
        background: var(--primary);
        border-radius: 999px;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .hot-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        border: 1px solid var(--line);
        background: #fff;
        padding: 6px 12px;
        border-radius: 999px;
        font-size: 13px;
        font-weight: 600;
        color: var(--sub);
        transition: all .2s ease;
    }

    .hot-chip:hover {
        border-color: var(--primary);
        color: var(--primary);
        box-shadow: 0 4px 12px rgba(21, 99, 192, .08);
    }

    .hot-dot {
        width: 18px;
        height: 18px;
        border-radius: 999px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(228, 87, 27, .12);
        color: var(--accent);
        font-size: 11px;
        font-weight: 800;
    }

    .burger-btn {
        display: none;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: none;
        border-radius: 8px;
        color: var(--ink);
        background: #fff;
        cursor: pointer;
    }

    .burger-btn:hover {
        background: var(--primary-light);
        color: var(--primary);
    }

    .mobile-nav {
        position: absolute;
        top: calc(100% + 1px);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--line);
        padding: 8px 24px 20px;
        display: grid;
        gap: 4px;
        box-shadow: 0 14px 24px -14px rgba(16, 24, 40, .16);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: all .25s ease;
        z-index: -1;
    }

    .mobile-nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .mobile-nav a {
        display: block;
        padding: 12px 4px;
        font-size: 16px;
        font-weight: 500;
        color: var(--sub);
        border-bottom: 1px solid #F2F4F7;
    }

    .mobile-nav a:hover,
    .mobile-nav a.active {
        color: var(--primary);
        font-weight: 700;
    }

    @media (max-width: 1023.5px) {
        .main-nav {
            display: none;
        }
        .burger-btn {
            display: inline-flex;
        }
        .hot-chip {
            display: none;
        }
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        padding: 10px 20px;
        border-radius: 8px;
        font-weight: 600;
        line-height: 1.4;
        border: 1px solid transparent;
        transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
        cursor: pointer;
        text-align: center;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
    }

    .btn-primary:hover {
        background: var(--primary-dark);
        box-shadow: 0 8px 18px -6px rgba(21, 99, 192, .32);
        transform: translateY(-1px);
    }

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

    .btn-accent {
        background: var(--accent);
        color: #fff;
    }

    .btn-accent:hover {
        background: var(--accent-dark);
        box-shadow: 0 8px 18px -6px rgba(228, 87, 27, .26);
        transform: translateY(-1px);
    }

    .btn-outline {
        background: #fff;
        border-color: #D0D5DD;
        color: var(--ink);
    }

    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        box-shadow: 0 4px 12px rgba(21, 99, 192, .1);
    }

    .btn-lg {
        min-height: 52px;
        padding: 12px 28px;
        font-size: 16px;
    }

    /* Section blocks */
    .section-block {
        padding: 88px 0;
    }

    .section-label {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 13px;
        font-weight: 700;
        border-radius: 999px;
        padding: 6px 14px;
        letter-spacing: .01em;
    }

    .section-eyebrow {
        font-size: 13px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: .02em;
    }

    .block-tint {
        background: #fff;
    }

    .block-soft {
        background: linear-gradient(180deg, #F6F9FC 0%, #EDF4FB 100%);
    }

    @media (max-width: 767px) {
        .section-block {
            padding: 64px 0;
        }
    }

    /* Hero */
    .cat-hero {
        position: relative;
        border-bottom: 1px solid var(--line);
        background-image: linear-gradient(100deg, rgba(246, 249, 252, .96) 30%, rgba(232, 240, 248, .78)),
            url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        overflow: hidden;
    }

    .cat-hero .container {
        position: relative;
        z-index: 2;
        padding-top: 56px;
        padding-bottom: 64px;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 6px;
        font-size: 13px;
        color: var(--faint);
        margin-bottom: 24px;
    }

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

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

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, .9);
        border: 1px solid var(--line);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        padding: 6px 14px;
        border-radius: 999px;
        margin-bottom: 22px;
    }

    .hero-title {
        font-size: 44px;
        line-height: 1.2;
        font-weight: 800;
        letter-spacing: -0.01em;
        color: var(--ink);
        margin: 0 0 18px;
    }

    .hero-lead {
        max-width: 660px;
        font-size: 17px;
        color: var(--sub);
        line-height: 1.8;
        margin-bottom: 24px;
    }

    .hero-image-card {
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid #fff;
        box-shadow: var(--shadow-hover);
        background: var(--primary-light);
        transform: rotate(1.2deg);
        transition: transform .3s ease;
    }

    .hero-image-card:hover {
        transform: rotate(0deg) scale(1.01);
    }

    @media (max-width: 767px) {
        .hero-title {
            font-size: 34px;
        }
        .hero-lead {
            font-size: 16px;
        }
        .cat-hero .container {
            padding-top: 44px;
            padding-bottom: 48px;
        }
    }

    /* Service position / side nav */
    .side-nav-wrap {
        border: 1px solid var(--line);
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 20px 18px;
    }

    .side-nav-title {
        display: block;
        font-size: 14px;
        font-weight: 800;
        color: var(--ink);
        padding: 0 6px 12px;
        margin-bottom: 8px;
        border-bottom: 1px solid #F2F4F7;
    }

    .side-nav a {
        display: block;
        padding: 10px 12px;
        border-radius: 8px;
        color: var(--sub);
        font-size: 15px;
        font-weight: 500;
        margin-bottom: 4px;
        transition: all .2s ease;
    }

    .side-nav a:hover {
        background: var(--primary-light);
        color: var(--primary);
    }

    .service-position {
        gap: 40px;
    }

    .detail-block+.detail-block {
        margin-top: 40px;
    }

    .detail-card {
        border: 1px solid var(--line);
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 32px;
    }

    .icon-list {
        margin-top: 0;
        display: grid;
        gap: 10px;
    }

    .icon-list li {
        display: flex;
        gap: 10px;
        align-items: flex-start;
        font-size: 15px;
        color: var(--sub);
    }

    .icon-list .icon-dot {
        width: 20px;
        height: 20px;
        border-radius: 999px;
        background: var(--primary-light);
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        font-weight: 900;
        flex-shrink: 0;
        margin-top: 4px;
    }

    .info-note {
        background: #FFF8F3;
        border: 1px solid #FFE3D2;
        padding: 16px 20px;
        border-radius: var(--radius);
        color: #9A3412;
        font-size: 14px;
        line-height: 1.8;
    }

    .info-note strong {
        color: var(--accent-dark);
    }

    .service-check li {
        display: flex;
        gap: 8px;
        align-items: flex-start;
        color: var(--sub);
        font-size: 14px;
        line-height: 1.7;
    }

    .service-check li::before {
        content: "✓";
        margin-top: 2px;
        font-weight: 800;
        color: var(--success);
    }

    /* Cards */
    .card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        transition: box-shadow .25s ease, transform .25s ease;
        overflow: hidden;
    }

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

    .card-media {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 9;
        background: var(--primary-light);
    }

    .card-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .4s ease;
    }

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

    .card-body {
        padding: 28px;
    }

    .tag {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        padding: 4px 11px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 600;
        margin-bottom: 12px;
    }

    .service-sub-list {
        border-top: 1px solid #EEF2F6;
        margin-top: 16px;
        padding-top: 16px;
    }

    /* Process */
    .process-step {
        position: relative;
        border-radius: var(--radius);
        background: #fff;
        border: 1px solid var(--line);
        padding: 28px 24px;
        min-height: 180px;
        box-shadow: var(--shadow);
        transition: transform .2s ease, box-shadow .2s ease;
    }

    .process-step:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
    }

    .step-num {
        display: inline-flex;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        background: var(--primary-light);
        color: var(--primary);
        font-weight: 800;
        font-size: 18px;
        margin-bottom: 18px;
    }

    .step-arrow {
        position: absolute;
        right: -22px;
        top: 42px;
        color: var(--line);
        z-index: 2;
        display: none;
    }

    @media (min-width: 1024px) {
        .step-arrow {
            display: block;
        }
    }

    /* Scenario */
    .scene-item {
        display: flex;
        gap: 16px;
        padding: 22px 0;
        border-bottom: 1px solid #EEF2F6;
    }

    .scene-item:last-child {
        border-bottom: 0;
    }

    .scene-index {
        font-size: 14px;
        font-weight: 800;
        color: var(--primary);
        background: var(--primary-light);
        width: 34px;
        height: 34px;
        flex-shrink: 0;
        display: inline-flex;
        border-radius: 10px;
        align-items: center;
        justify-content: center;
    }

    /* FAQ */
    .faq-item {
        border: 1px solid var(--line);
        background: #fff;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        overflow: hidden;
        transition: border-color .2s ease;
    }

    .faq-item[open] {
        border-color: rgba(21, 99, 192, .22);
    }

    .faq-item summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 20px 24px;
        cursor: pointer;
        font-weight: 650;
        font-size: 16px;
        color: var(--ink);
        list-style: none;
    }

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

    .faq-item summary:hover {
        color: var(--primary);
    }

    .faq-icon {
        width: 26px;
        height: 26px;
        border-radius: 8px;
        background: var(--primary-light);
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        transition: transform .25s ease, background-color .2s ease, color .2s ease;
    }

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

    .faq-answer {
        padding: 0 24px 22px;
        font-size: 15px;
        color: var(--sub);
        line-height: 1.85;
        border-top: 1px dashed #EEF2F6;
        margin: 0 24px 0;
        padding-left: 0;
        padding-right: 0;
    }

    /* Form */
    .form-card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        box-shadow: 0 12px 30px -12px rgba(16, 24, 40, .12);
        padding: 36px;
    }

    .form-group {
        display: grid;
        gap: 8px;
        margin-bottom: 22px;
    }

    .form-label {
        display: block;
        font-size: 14px;
        font-weight: 600;
        color: var(--ink);
    }

    .form-control {
        width: 100%;
        min-height: 44px;
        padding: 10px 14px;
        background: #fff;
        border: 1px solid #D0D5DD;
        border-radius: 8px;
        color: var(--ink);
        font-size: 15px;
        line-height: 1.5;
        transition: border-color .2s ease, box-shadow .2s ease;
    }

    .form-control::placeholder {
        color: #98A2B3;
    }

    .form-control:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(21, 99, 192, .15);
        outline: none;
    }

    textarea.form-control {
        min-height: 116px;
        resize: vertical;
    }

    .form-hint {
        font-size: 13px;
        color: var(--faint);
        margin-top: 4px;
    }

    /* Footer */
    .footer {
        background: #ffffff;
        border-top: 1px solid var(--line);
        padding: 72px 0 0;
    }

    .footer .container {
        padding-bottom: 28px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid #EEF2F6;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 14px;
    }

    .footer-desc {
        color: var(--faint);
        font-size: 14px;
        line-height: 1.8;
        max-width: 360px;
    }

    .footer-col-title {
        color: var(--ink);
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 14px;
    }

    .footer-col {
        display: grid;
        gap: 10px;
    }

    .footer-col a {
        display: inline-block;
        color: var(--sub);
        font-size: 14px;
        width: fit-content;
    }

    .footer-col a:hover {
        color: var(--primary);
        transform: translateX(2px);
    }

    .footer-col span {
        display: block;
        color: var(--sub);
        font-size: 14px;
        line-height: 1.7;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        padding-top: 24px;
        color: var(--faint);
        font-size: 13px;
    }

    @media (max-width: 1023px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
    }

    @media (max-width: 640px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer {
            padding-top: 52px;
        }
    }

    /* Bottom CTA */
    .bottom-cta {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 90;
        background: rgba(255, 255, 255, .98);
        border-top: 1px solid var(--line);
        box-shadow: 0 -4px 16px -8px rgba(16, 24, 40, .12);
        backdrop-filter: blur(10px);
    }

    .bottom-cta-wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        min-height: 60px;
        padding-top: 8px;
        padding-bottom: 8px;
    }

    .bottom-cta-tip {
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--ink);
        font-size: 14px;
        font-weight: 600;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .bottom-cta-tip .dot {
        width: 8px;
        height: 8px;
        background: var(--success);
        border-radius: 999px;
        flex-shrink: 0;
    }

    .bottom-cta-action {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .bottom-cta .btn {
        min-height: 38px;
        padding: 6px 14px;
        font-size: 14px;
    }

    .cta-close {
        width: 30px;
        height: 30px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: #F2F4F7;
        border: none;
        border-radius: 8px;
        color: var(--faint);
        cursor: pointer;
    }

    .cta-close:hover {
        color: var(--danger);
        background: #FEF3F2;
    }

    .bottom-cta-mark {
        display: inline-block;
        font-size: 12px;
        color: var(--faint);
        margin-right: 8px;
    }

    @media (max-width: 640px) {
        body {
            padding-bottom: 64px;
        }
        .bottom-cta-tip {
            display: none;
        }
        .bottom-cta-wrap {
            justify-content: flex-end;
        }
        .bottom-cta .btn {
            min-height: 42px;
            width: 100%;
            padding: 8px 18px;
        }
        .bottom-cta-mark {
            display: none;
        }
    }

    /* Animation / extra helpers */
    .text-balance {
        text-wrap: balance;
    }

    .badge-primary {
        display: inline-block;
        padding: 4px 12px;
        border-radius: 999px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 13px;
        font-weight: 700;
    }

    .divider-dashed {
        height: 1px;
        background: repeating-linear-gradient(90deg, #E4E7EC 0, #E4E7EC 6px, transparent 6px, transparent 12px);
        border: 0;
    }

/* roulang page: category4 */
:root {
    --primary: #1563C0;
    --primary-deep: #0F4C95;
    --primary-light: #E8F0F8;
    --orangeat: #E4571B;
    --text: #101828;
    --sub: #475467;
    --mute: #667085;
    --line: #E4E7EC;
    --bg: #F6F9FC;
    --success: #067647;
    --alert: #B42318;
    --radius-card: 12px;
    --radius-img: 16px;
    --radius-btn: 8px;
    --shadow-card: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.1);
    --shadow-hover: 0 12px 24px -8px rgba(21,99,192,.14);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; outline: none; }
.container { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: 20px; padding-right: 20px; }
.text-ellipsis-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.text-ellipsis-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-trans { transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }

/* 顶部导航 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: #FFFFFF;
    box-shadow: 0 1px 2px rgba(16,24,40,.05);
    min-height: 64px;
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    gap: 16px;
}
.logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.logo-badge {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: .02em;
}
.logo-text-line { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text-line span:first-child { font-size: 18px; font-weight: 800; letter-spacing: .01em; color: var(--text); }
.logo-sub {
    font-size: 11px;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    padding: 2px 8px;
    margin-top: 3px;
    width: fit-content;
    font-weight: 400;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 18px 16px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    letter-spacing: .01em;
    transition: color .2s;
    white-space: nowrap;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .2s;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.hot-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--primary-deep);
    border: 1px solid #D0D5DD;
    background: #FFFFFF;
    border-radius: 999px;
    padding: 7px 14px;
    font-weight: 500;
    transition: border-color .2s, box-shadow .2s, transform .2s;
}
.hot-chip:hover { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,99,192,.08); transform: translateY(-1px); }
.hot-dot {
    color: #FFFFFF;
    background: var(--orangeat);
    font-size: 10px;
    border-radius: 99px;
    padding: 1px 6px;
    font-style: normal;
}
.burger-btn { width: 38px; height: 38px; border-radius: 8px; display: none; align-items: center; justify-content: center; color: var(--text); border: 1px solid var(--line); transition: all .2s; }
.burger-btn:hover { border-color: var(--primary); color: var(--primary); }
@media (max-width: 1023.9px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        box-shadow: 0 18px 30px -12px rgba(16,24,40,.16);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 16px 18px;
        border-top: 1px solid var(--line);
        gap: 2px;
    }
    .main-nav.open { display: flex; }
    .nav-link { padding: 14px 12px; border-radius: 8px; }
    .nav-link:hover { background: var(--primary-light); color: var(--primary); }
    .nav-link::after { display: none; }
    .burger-btn { display: inline-flex; }
    .hot-chip { display: none; }
}
@media (max-width: 380px) {
    .logo-text-line span:first-child { font-size: 16px; }
    .logo-sub { font-size: 10px; }
}

/* 按钮 */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #FFFFFF;
    height: 44px;
    padding: 0 26px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 1px 2px rgba(21,99,192,.2);
    transition: background .2s, box-shadow .2s, transform .2s;
}
.btn-primary:hover { background: var(--primary-deep); box-shadow: 0 8px 20px -6px rgba(21,99,192,.32); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 3px solid rgba(21,99,192,.25); outline-offset: 2px; }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
    color: var(--text);
    border: 1px solid #D0D5DD;
    height: 44px;
    padding: 0 22px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 500;
    transition: border-color .2s, box-shadow .2s, transform .2s, color .2s;
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); box-shadow: 0 0 0 3px rgba(21,99,192,.08); transform: translateY(-1px); }
.btn-orange {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--orangeat);
    color: #FFFFFF;
    height: 44px;
    padding: 0 26px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    transition: background .2s, box-shadow .2s, transform .2s;
}
.btn-orange:hover { background: var(--orangeat-deep); box-shadow: 0 8px 20px -6px rgba(228,87,27,.3); transform: translateY(-1px); }
@media (max-width: 520px) {
    .btn-primary, .btn-secondary, .btn-orange { width: 100%; max-width: 420px; }
}

/* 通用板块 */
.section-block { padding: 80px 0; }
.section-label {
    display: inline-flex;
    align-items: center;
    background: var(--primary-light);
    color: var(--primary-deep);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    letter-spacing: .02em;
}
.section-title {
    font-size: 28px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.01em;
    margin: 18px 0 10px;
}
.section-desc { color: var(--sub); font-size: 16px; max-width: 640px; line-height: 1.75; }
@media (max-width: 767.9px) {
    .section-block { padding: 56px 0; }
    .section-title { font-size: 23px; }
}

/* 通用卡片 */
.card {
    background: #FFFFFF;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(228,231,236,.7);
}
.card-hover { transition: transform .25s, box-shadow .25s, border-color .25s; }
.card-hover:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: rgba(21,99,192,.16); }
.tag-chip {
    display: inline-flex;
    align-items: center;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 999px;
    font-weight: 500;
}

/* 移动抽屉 */
@media (min-width: 1024px) { .mobile-only { display: none !important; } }
@media (max-width: 1023.9px) {
    .desktop-only { display: none !important; }
}

/* 页脚 */
.footer {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    padding: 60px 0 26px;
    margin-top: 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 42px;
}
.footer-brand { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.footer-desc { color: var(--mute); font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-col-title { font-size: 15px; font-weight: 600; margin-bottom: 16px; color: var(--text); }
.footer-col { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--sub); }
.footer-col a { width: fit-content; transition: color .2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { padding-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; color: var(--mute); font-size: 13px; }
@media (max-width: 820px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 20px; }
}
@media (max-width: 540px) {
    .footer-grid { grid-template-columns: 1fr; row-gap: 28px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* FAQ */
.faq-wrap { max-width: 880px; margin: 30px auto 0; }
.faq-item {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-bottom: 10px;
    box-shadow: 0 1px 2px rgba(16,24,40,.02);
    transition: border-color .2s, box-shadow .2s;
}
.faq-item.active { border-color: rgba(21,99,192,.35); box-shadow: 0 8px 24px -12px rgba(21,99,192,.15); }
.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
}
.faq-q .faq-icon { flex-shrink: 0; color: var(--primary); font-size: 13px; transform: rotate(0deg); transition: transform .3s; font-size: 20px; line-height: 1; }
.faq-item.active .faq-q { color: var(--primary); }
.faq-item.active .faq-icon { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 20px 20px; font-size: 14px; color: var(--sub); line-height: 1.8; }

/* 联系表单 */
.form-control {
    width: 100%;
    height: 46px;
    border: 1px solid #D0D5DD;
    border-radius: 8px;
    background: #FFFFFF;
    padding: 0 14px;
    font-size: 15px;
    color: var(--text);
    transition: border-color .2s, box-shadow .2s;
}
textarea.form-control { height: auto; padding-top: 12px; resize: vertical; min-height: 90px; }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,99,192,.15); }
.form-label { display: block; font-size: 14px; color: var(--text); margin-bottom: 7px; font-weight: 500; }

/* 图文步骤 */
.step-card { position: relative; }
.step-count {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    margin-bottom: 10px;
}

/* 面包屑 */
.breadcrumb-banner { position: relative; background: linear-gradient(120deg, #f0f6fc 0%, #F6F9FC 60%, #ffffff 100%); border-bottom: 1px solid var(--line); overflow: hidden; padding: 48px 0 44px; }
.breadcrumb-banner .bgmark { position: absolute; right: -20px; top: 20px; width: 360px; opacity: .6; pointer-events: none; }

/* 影响主视觉文本安全区样式，防止图片模糊影响阅读 */
.hero-safe-area { position: relative; z-index: 2; }