/* roulang page: index */
:root {
        --color-primary: #5B8DEF;
        --color-primary-dark: #2B5C9E;
        --color-primary-light: #EAF1F9;
        --color-accent: #FF9F45;
        --color-success: #34C77B;
        --color-bg: #F7FAFD;
        --color-card: #FFFFFF;
        --color-text: #172B4D;
        --color-text-secondary: #5A7189;
        --color-text-muted: #8CA3B9;
        --color-border: #E3EBF3;
        --radius-btn: 10px;
        --radius-card: 16px;
        --radius-image: 12px;
        --radius-dock: 100px;
        --shadow-card: 0 8px 24px rgba(39, 80, 132, 0.08);
        --shadow-hover: 0 14px 36px rgba(39, 80, 132, 0.14);
        --shadow-dock: 0 10px 30px rgba(39, 80, 132, 0.12);
        --shadow-hero: 0 24px 60px rgba(39, 80, 132, 0.15);
        --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        --transition: 200ms ease;
    }

    /* Reset & Base */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font);
        background: var(--color-bg);
        color: var(--color-text);
        line-height: 1.7;
        font-size: 15px;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--color-primary-dark);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 24px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        border: 1px solid transparent;
        cursor: pointer;
        transition: all var(--transition);
        line-height: 1.4;
        text-align: center;
    }
    .btn-primary {
        background: var(--color-primary);
        color: #fff;
    }
    .btn-primary:hover {
        background: var(--color-primary-dark);
        color: #fff;
        box-shadow: 0 6px 16px rgba(43, 92, 158, 0.25);
    }
    .btn-outline {
        background: transparent;
        border-color: var(--color-primary);
        color: var(--color-primary-dark);
    }
    .btn-outline:hover {
        background: var(--color-primary-light);
        border-color: var(--color-primary-dark);
        color: var(--color-primary-dark);
    }
    .btn-white {
        background: #fff;
        color: var(--color-primary-dark);
    }
    .btn-white:hover {
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
    }
    .btn-sm {
        padding: 8px 18px;
        font-size: 13px;
    }
    .btn-lg {
        padding: 14px 32px;
        font-size: 15px;
    }
    .btn:focus-visible {
        outline: 3px solid rgba(91, 141, 239, 0.4);
        outline-offset: 2px;
    }

    /* Badge & Tag */
    .badge {
        display: inline-block;
        padding: 4px 12px;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        border-radius: 100px;
        font-size: 12px;
        font-weight: 500;
        line-height: 1.4;
    }

    /* Dock Navigation */
    .dock-nav {
        position: fixed;
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
        width: 940px;
        max-width: calc(100% - 40px);
        background: rgba(255, 255, 255, 0.88);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-dock);
        box-shadow: var(--shadow-dock);
        transition: box-shadow var(--transition);
    }
    .dock-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 16px 10px 24px;
        border-radius: var(--radius-dock);
    }
    .dock-logo {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .logo-mark {
        width: 34px;
        height: 34px;
        background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        font-size: 15px;
        flex-shrink: 0;
    }
    .logo-text {
        font-size: 17px;
        font-weight: 700;
        color: var(--color-text);
        letter-spacing: -0.3px;
    }
    .dock-links {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .dock-link {
        padding: 8px 18px;
        border-radius: 100px;
        font-size: 14px;
        font-weight: 500;
        color: var(--color-text-secondary);
        position: relative;
    }
    .dock-link:hover {
        color: var(--color-primary);
        background: rgba(91, 141, 239, 0.06);
    }
    .dock-link.active {
        color: var(--color-primary-dark);
        font-weight: 600;
    }
    .dock-link.active::after {
        content: "";
        position: absolute;
        bottom: 4px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        border-radius: 3px;
        background: var(--color-primary);
    }
    .dock-actions {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .hamburger {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
        border-radius: 8px;
    }
    .hamburger span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--color-text);
        margin: 4px 0;
        border-radius: 2px;
        transition: all var(--transition);
    }
    .hamburger.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    .mobile-menu {
        display: none;
    }

    /* Hero */
    .hero {
        position: relative;
        padding: 160px 0 90px;
        background: var(--color-bg);
        overflow: hidden;
        min-height: 620px;
        display: flex;
        align-items: center;
    }
    .hero::before {
        content: "";
        position: absolute;
        top: -180px;
        right: -120px;
        width: 480px;
        height: 480px;
        background: radial-gradient(circle, rgba(91, 141, 239, 0.12), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .hero::after {
        content: "";
        position: absolute;
        bottom: -80px;
        left: 10%;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(52, 199, 123, 0.06), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .hero .container {
        position: relative;
        z-index: 2;
    }
    .hero-grid {
        display: flex;
        align-items: center;
        gap: 60px;
    }
    .hero-left {
        flex: 0 0 42%;
        max-width: 42%;
    }
    .hero-right {
        flex: 1;
        display: flex;
        justify-content: center;
        position: relative;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        padding: 5px 14px;
        border-radius: 100px;
        font-size: 12px;
        font-weight: 500;
        margin-bottom: 20px;
    }
    .hero h1 {
        font-size: 38px;
        font-weight: 700;
        line-height: 1.25;
        color: var(--color-text);
        margin-bottom: 20px;
        letter-spacing: -0.5px;
    }
    .hero-sub {
        font-size: 16px;
        color: var(--color-text-secondary);
        line-height: 1.7;
        margin-bottom: 32px;
        max-width: 380px;
    }
    .hero-cta {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

    /* Phone Card */
    .phone-card {
        width: 290px;
        height: 460px;
        border-radius: 28px;
        background: #fff;
        box-shadow: var(--shadow-hero);
        transform: rotate(1.5deg);
        position: relative;
        overflow: hidden;
        transition: transform var(--transition);
    }
    .phone-card:hover {
        transform: rotate(0deg) translateY(-6px);
    }
    .phone-bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        filter: blur(5px);
        transform: scale(1.08);
    }
    .phone-cover {
        position: absolute;
        top: 24px;
        left: 24px;
        right: 24px;
        bottom: 24px;
        border-radius: 18px;
        overflow: hidden;
        box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
    }
    .phone-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .phone-badge {
        position: absolute;
        bottom: 16px;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(8px);
        padding: 6px 18px;
        border-radius: 100px;
        font-size: 12px;
        color: var(--color-primary-dark);
        font-weight: 500;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        white-space: nowrap;
    }
    .phone-float-icon {
        position: absolute;
        top: 36px;
        right: -6px;
        width: 38px;
        height: 38px;
        background: #fff;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
        color: var(--color-primary);
        font-size: 15px;
    }

    /* Section Common */
    .section {
        padding: 100px 0;
    }
    .section-alt {
        background: #fff;
    }
    .section-header {
        text-align: center;
        max-width: 640px;
        margin: 0 auto 56px;
    }
    .section-tag {
        display: inline-block;
        padding: 4px 14px;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        border-radius: 100px;
        font-size: 12px;
        font-weight: 500;
        margin-bottom: 14px;
    }
    .section-header h2 {
        font-size: 30px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--color-text);
        margin-bottom: 12px;
        letter-spacing: -0.4px;
    }
    .section-header p {
        font-size: 15px;
        color: var(--color-text-secondary);
        line-height: 1.7;
    }

    /* Feature Cards */
    .feature-card {
        background: var(--color-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
        border: 1px solid rgba(227, 235, 243, 0.5);
    }
    .feature-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-6px);
    }
    .card-img {
        height: 180px;
        overflow: hidden;
        position: relative;
    }
    .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }
    .feature-card:hover .card-img img {
        transform: scale(1.03);
    }
    .img-overlay {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        padding: 30px 16px 12px;
        background: linear-gradient(to top, rgba(23, 43, 77, 0.55), transparent);
        color: #fff;
        font-size: 13px;
        font-weight: 500;
    }
    .card-body {
        padding: 24px;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
    }
    .card-body .badge {
        align-self: flex-start;
        margin-bottom: 10px;
    }
    .card-body h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--color-text);
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .card-body p {
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.6;
        margin-bottom: 16px;
        flex-grow: 1;
    }
    .card-link {
        font-size: 14px;
        font-weight: 500;
        color: var(--color-primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        transition: gap var(--transition);
    }
    .card-link:hover {
        gap: 10px;
        color: var(--color-primary-dark);
    }

    /* Checklist Section */
    .checklist-wrap {
        display: flex;
        gap: 60px;
        align-items: flex-start;
    }
    .checklist-left {
        flex: 0 0 40%;
        max-width: 40%;
    }
    .checklist-left h2 {
        font-size: 28px;
        font-weight: 700;
        margin-bottom: 16px;
        color: var(--color-text);
        line-height: 1.3;
    }
    .checklist-left p {
        font-size: 15px;
        color: var(--color-text-secondary);
        line-height: 1.7;
        margin-bottom: 24px;
    }
    .checklist-left .mini-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .mini-item {
        background: var(--color-card);
        border-radius: var(--radius-image);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all var(--transition);
    }
    .mini-item:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .mini-item img {
        width: 100%;
        height: 96px;
        object-fit: cover;
    }
    .mini-item span {
        display: block;
        padding: 10px 12px;
        font-size: 13px;
        font-weight: 500;
        color: var(--color-text);
        line-height: 1.4;
    }
    .checklist-right {
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .checklist-item {
        display: flex;
        align-items: center;
        gap: 16px;
        background: var(--color-card);
        border-radius: 12px;
        padding: 16px 20px;
        box-shadow: var(--shadow-card);
        border: 1px solid rgba(227, 235, 243, 0.5);
        transition: all var(--transition);
        min-height: 76px;
    }
    .checklist-item:hover {
        box-shadow: var(--shadow-hover);
        transform: translateX(4px);
    }
    .checklist-num {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 600;
        font-size: 16px;
        flex-shrink: 0;
        transition: all var(--transition);
    }
    .checklist-item:hover .checklist-num {
        background: var(--color-primary);
        color: #fff;
    }
    .checklist-info {
        flex: 1;
    }
    .checklist-info h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--color-text);
        margin-bottom: 2px;
        line-height: 1.4;
    }
    .checklist-info p {
        font-size: 13px;
        color: var(--color-text-secondary);
        line-height: 1.5;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .checklist-tag {
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        border-radius: 100px;
        padding: 4px 12px;
        font-size: 12px;
        font-weight: 500;
        white-space: nowrap;
    }

    /* Testimonials */
    .testimonial-card {
        background: var(--color-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 28px;
        height: 100%;
        display: flex;
        flex-direction: column;
        transition: all var(--transition);
        border: 1px solid rgba(227, 235, 243, 0.5);
    }
    .testimonial-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
    }
    .testimonial-top {
        display: flex;
        align-items: center;
        gap: 14px;
        margin-bottom: 16px;
    }
    .testimonial-avatar {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--color-primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-primary-dark);
        font-weight: 600;
        font-size: 14px;
        flex-shrink: 0;
    }
    .testimonial-name {
        font-size: 14px;
        font-weight: 600;
        color: var(--color-text);
    }
    .testimonial-role {
        font-size: 12px;
        color: var(--color-text-muted);
    }
    .stars {
        color: var(--color-accent);
        font-size: 13px;
        letter-spacing: 1px;
        margin-left: auto;
    }
    .testimonial-card p {
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.6;
        flex-grow: 1;
    }
    .testimonial-meta {
        margin-top: 16px;
        padding-top: 14px;
        border-top: 1px solid var(--color-border);
        font-size: 12px;
        color: var(--color-text-muted);
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    /* CTA Section */
    .cta-card {
        position: relative;
        background: linear-gradient(135deg, #2B5C9E, #1E3D6E);
        border-radius: 24px;
        padding: 60px 56px;
        overflow: hidden;
        box-shadow: 0 24px 60px rgba(30, 61, 110, 0.25);
    }
    .cta-card::after {
        content: "";
        position: absolute;
        top: -40px;
        right: -40px;
        width: 220px;
        height: 220px;
        background: radial-gradient(circle, rgba(255, 255, 255, 0.06), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .cta-card .cta-decor-img {
        position: absolute;
        right: 40px;
        bottom: 0;
        width: 260px;
        height: 180px;
        object-fit: cover;
        border-radius: 16px 16px 0 0;
        opacity: 0.85;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    }
    .cta-content {
        position: relative;
        z-index: 2;
        max-width: 480px;
    }
    .cta-content h2 {
        font-size: 30px;
        font-weight: 700;
        color: #fff;
        line-height: 1.3;
        margin-bottom: 12px;
        letter-spacing: -0.3px;
    }
    .cta-content p {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.8);
        line-height: 1.7;
        margin-bottom: 28px;
    }
    .cta-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

    /* News List */
    .news-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        max-width: 860px;
        margin: 0 auto;
    }
    .news-item {
        display: flex;
        align-items: center;
        gap: 20px;
        background: var(--color-card);
        border-radius: 14px;
        padding: 20px 24px;
        box-shadow: var(--shadow-card);
        border: 1px solid rgba(227, 235, 243, 0.5);
        transition: all var(--transition);
    }
    .news-item:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .news-date {
        flex-shrink: 0;
        width: 60px;
        text-align: center;
        background: var(--color-primary-light);
        border-radius: 12px;
        padding: 8px 4px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .news-day {
        font-size: 24px;
        font-weight: 700;
        color: var(--color-primary-dark);
        line-height: 1.2;
    }
    .news-month {
        font-size: 12px;
        color: var(--color-text-secondary);
    }
    .news-content {
        flex: 1;
        min-width: 0;
    }
    .news-content .badge {
        margin-bottom: 6px;
        font-size: 11px;
    }
    .news-content h3 {
        font-size: 16px;
        font-weight: 600;
        color: var(--color-text);
        margin-bottom: 4px;
        line-height: 1.4;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .news-content p {
        font-size: 13px;
        color: var(--color-text-secondary);
        line-height: 1.5;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .news-arrow {
        flex-shrink: 0;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        transition: all var(--transition);
    }
    .news-item:hover .news-arrow {
        background: var(--color-primary);
        color: #fff;
    }
    .empty-state {
        text-align: center;
        padding: 80px 20px;
        background: var(--color-card);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        border: 1px dashed var(--color-border);
    }
    .empty-icon {
        width: 56px;
        height: 56px;
        background: var(--color-primary-light);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
        font-size: 22px;
        color: var(--color-primary);
    }
    .empty-state p {
        font-size: 14px;
        color: var(--color-text-secondary);
    }

    /* FAQ */
    .faq-list {
        max-width: 760px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: var(--color-card);
        border-radius: 12px;
        box-shadow: var(--shadow-card);
        overflow: hidden;
        border: 1px solid rgba(227, 235, 243, 0.5);
        transition: all var(--transition);
    }
    .faq-item.open {
        background: var(--color-primary-light);
        box-shadow: var(--shadow-hover);
    }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        cursor: pointer;
        font-size: 15px;
        font-weight: 600;
        color: var(--color-text);
        transition: color var(--transition);
    }
    .faq-question:hover {
        color: var(--color-primary-dark);
    }
    .faq-icon {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: var(--color-primary-light);
        color: var(--color-primary-dark);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        flex-shrink: 0;
        transition: all var(--transition);
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
        background: var(--color-primary);
        color: #fff;
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        padding: 0 24px;
    }
    .faq-answer-inner {
        padding: 0 0 20px;
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.7;
        border-top: 1px solid rgba(227, 235, 243, 0.6);
        padding-top: 14px;
    }

    /* Footer */
    .footer {
        background: #1F3E6A;
        color: rgba(255, 255, 255, 0.75);
        padding: 60px 0 0;
        margin-top: 40px;
    }
    .footer-grid {
        display: flex;
        gap: 40px;
        flex-wrap: wrap;
        padding-bottom: 40px;
    }
    .footer-col {
        flex: 1;
        min-width: 220px;
    }
    .footer-col.footer-brand {
        flex: 1.4;
    }
    .footer-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 16px;
        font-size: 20px;
        font-weight: 700;
        color: #fff;
    }
    .footer-logo .logo-mark {
        background: #fff;
        color: var(--color-primary-dark);
    }
    .footer-brand p {
        font-size: 14px;
        line-height: 1.7;
        max-width: 260px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 14px;
    }
    .footer-col a {
        display: block;
        color: rgba(255, 255, 255, 0.7);
        padding: 5px 0;
        font-size: 14px;
        transition: color var(--transition);
    }
    .footer-col a:hover {
        color: #fff;
    }
    .footer-contact {
        font-size: 14px;
        line-height: 1.8;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding: 18px 0;
        text-align: center;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.5);
    }

    /* Back to top */
    .back-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--color-primary);
        color: #fff;
        border: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 8px 20px rgba(91, 141, 239, 0.3);
        transition: all var(--transition);
        z-index: 999;
    }
    .back-top:hover {
        background: var(--color-primary-dark);
        transform: translateY(-4px);
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .hero {
            padding: 140px 0 60px;
            min-height: auto;
        }
        .hero-grid {
            gap: 32px;
        }
        .hero-left {
            flex: 0 0 50%;
            max-width: 50%;
        }
        .hero h1 {
            font-size: 30px;
        }
        .phone-card {
            width: 250px;
            height: 420px;
        }
        .section {
            padding: 80px 0;
        }
        .checklist-wrap {
            gap: 32px;
        }
    }

    @media (max-width: 768px) {
        .dock-nav {
            width: calc(100% - 32px);
            top: 12px;
        }
        .dock-inner {
            padding: 8px 14px 8px 18px;
        }
        .dock-links {
            display: none;
        }
        .hamburger {
            display: block;
        }
        .mobile-menu {
            display: block;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 20px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 0 0 20px 20px;
        }
        .mobile-menu.active {
            max-height: 260px;
            padding: 16px 20px 20px;
        }
        .mobile-link {
            display: block;
            padding: 12px 0;
            font-size: 15px;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-link.active {
            color: var(--color-primary-dark);
            font-weight: 600;
        }
        .hero {
            padding: 120px 0 60px;
        }
        .hero-grid {
            flex-direction: column;
            gap: 48px;
        }
        .hero-left {
            flex: none;
            max-width: 100%;
            text-align: center;
        }
        .hero-sub {
            margin-left: auto;
            margin-right: auto;
        }
        .hero-cta {
            justify-content: center;
        }
        .phone-card {
            width: 260px;
            height: 430px;
        }
        .section {
            padding: 60px 0;
        }
        .section-header h2 {
            font-size: 24px;
        }
        .checklist-wrap {
            flex-direction: column;
            gap: 32px;
        }
        .checklist-left {
            flex: none;
            max-width: 100%;
        }
        .checklist-left .mini-list {
            grid-template-columns: repeat(3, 1fr);
        }
        .footer-grid {
            flex-direction: column;
            gap: 28px;
        }
        .cta-card {
            padding: 40px 24px;
        }
        .cta-card .cta-decor-img {
            display: none;
        }
        .news-item {
            flex-wrap: wrap;
            gap: 12px;
            padding: 16px;
        }
        .news-date {
            width: 50px;
        }
        .news-content h3,
        .news-content p {
            white-space: normal;
        }
        .back-top {
            bottom: 20px;
            right: 20px;
        }
    }

    @media (max-width: 520px) {
        .hero h1 {
            font-size: 24px;
        }
        .hero-sub {
            font-size: 14px;
        }
        .btn-lg {
            padding: 12px 24px;
            font-size: 14px;
        }
        .checklist-left .mini-list {
            grid-template-columns: repeat(2, 1fr);
        }
        .testimonial-card {
            padding: 20px;
        }
        .cta-actions {
            flex-direction: column;
            align-items: stretch;
        }
        .cta-actions .btn {
            width: 100%;
        }
        .section-header h2 {
            font-size: 22px;
        }
        .checklist-info p {
            white-space: normal;
        }
    }

/* roulang page: category1 */
:root {
            --color-primary: #5B8DEF;
            --color-primary-dark: #2B5C9E;
            --color-primary-light: #EAF1F9;
            --color-accent: #FF9F45;
            --color-success: #34C77B;
            --color-bg: #F7FAFD;
            --color-card: #FFFFFF;
            --color-text: #172B4D;
            --color-muted: #5A7189;
            --color-light: #8CA3B9;
            --color-border: #E3EBF3;
            --radius-btn: 10px;
            --radius-card: 16px;
            --radius-img: 12px;
            --radius-dock: 100px;
            --shadow-card: 0 8px 24px rgba(39, 80, 132, 0.08);
            --shadow-hover: 0 14px 36px rgba(39, 80, 132, 0.14);
            --shadow-dock: 0 10px 30px rgba(39, 80, 132, 0.12);
            --shadow-hero: 0 24px 60px rgba(39, 80, 132, 0.15);
            --space-section: 100px;
            --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }

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

        p {
            margin: 0 0 16px;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0 0 12px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-text);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 12px;
        }

        .row .columns {
            padding: 0 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            cursor: pointer;
            transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
            font-family: var(--font-family);
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(43, 92, 158, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }

        .btn-outline:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 16px;
            border-radius: 12px;
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-white {
            background: #ffffff;
            color: var(--color-primary-dark);
            border-color: #ffffff;
        }

        .btn-white:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-light);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
        }

        .btn:focus,
        .dock-link:focus,
        .hamburger:focus,
        .faq-question:focus,
        .back-top:focus {
            outline: 3px solid rgba(91, 141, 239, 0.4);
            outline-offset: 2px;
        }

        /* ========= Dock 导航 ========= */
        .dock-nav {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 999;
            width: 920px;
            max-width: calc(100% - 32px);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-dock);
            box-shadow: var(--shadow-dock);
            padding: 8px 12px;
        }

        .dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .dock-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            flex-shrink: 0;
        }

        .dock-logo:hover {
            opacity: 0.85;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #ffffff;
            border-radius: 10px;
            font-size: 17px;
            font-weight: 800;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }

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

        .dock-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            border-radius: 100px;
            transition: color 0.25s ease, background 0.25s ease;
        }

        .dock-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

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

        .dock-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 10px;
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            cursor: pointer;
            padding: 8px;
            transition: background 0.25s ease;
        }

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

        .hamburger span {
            display: block;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

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

        .hamburger.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 0 6px;
            border-top: 1px solid var(--color-border);
            margin-top: 10px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-muted);
            border-radius: 10px;
            transition: background 0.25s ease, color 0.25s ease;
        }

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

        .mobile-link.active {
            color: var(--color-primary-dark);
            font-weight: 600;
            background: var(--color-primary-light);
        }

        /* ========= 分类页 Banner ========= */
        .page-banner {
            position: relative;
            padding: 150px 0 70px;
            background: linear-gradient(135deg, rgba(23, 43, 77, 0.82), rgba(43, 92, 158, 0.72)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            color: #ffffff;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            right: 0;
            bottom: 0;
            width: 280px;
            height: 180px;
            background: radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.12), transparent 65%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 22px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.25s ease;
        }

        .breadcrumb a:hover {
            color: #ffffff;
        }

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            line-height: 1.25;
            letter-spacing: 0.5px;
        }

        .page-banner .banner-desc {
            font-size: 16px;
            max-width: 620px;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 26px;
            line-height: 1.7;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #ffffff;
            font-size: 13px;
            font-weight: 500;
            padding: 7px 14px;
            border-radius: 100px;
            backdrop-filter: blur(4px);
        }

        .banner-tag i {
            font-size: 12px;
            color: var(--color-accent);
        }

        /* ========= 通用板块 ========= */
        .section {
            padding: var(--space-section) 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .section-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .section-header p {
            color: var(--color-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ========= 安全能力卡片 ========= */
        .capability-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .capability-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .capability-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .capability-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .capability-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(23, 43, 77, 0.45), transparent 60%);
        }

        .capability-icon {
            position: absolute;
            left: 20px;
            bottom: -22px;
            z-index: 2;
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #ffffff;
            border-radius: 14px;
            font-size: 20px;
            box-shadow: 0 8px 18px rgba(91, 141, 239, 0.35);
        }

        .capability-body {
            padding: 36px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .capability-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .capability-body p {
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .capability-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.25s ease;
        }

        .capability-link:hover {
            gap: 8px;
            color: var(--color-primary-dark);
        }

        /* ========= 适用场景 ========= */
        .scene-wrap {
            display: flex;
            align-items: center;
            gap: 56px;
            flex-wrap: wrap;
        }

        .scene-media {
            flex: 0 0 46%;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-hero);
            position: relative;
        }

        .scene-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .scene-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(43, 92, 158, 0.12), transparent 40%);
            pointer-events: none;
        }

        .scene-content {
            flex: 1;
            min-width: 300px;
        }

        .scene-content h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .scene-content .lead {
            color: var(--color-muted);
            font-size: 16px;
            margin-bottom: 26px;
            line-height: 1.7;
        }

        .scene-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .scene-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .scene-list li:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }

        .scene-list .scene-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            border-radius: 12px;
            font-size: 18px;
        }

        .scene-list h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .scene-list p {
            color: var(--color-muted);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========= 安全流程 ========= */
        .steps-section {
            background: linear-gradient(180deg, var(--color-primary-light), #ffffff);
        }

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

        .step-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            text-align: center;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            border-radius: 14px;
            box-shadow: 0 8px 20px rgba(91, 141, 239, 0.3);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .step-card p {
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            transform: translateY(-50%);
            color: var(--color-light);
            font-size: 18px;
            z-index: 2;
        }

        /* ========= 数据条带 ========= */
        .stats-bar {
            background: linear-gradient(135deg, var(--color-primary-dark), #1E3D6E);
            border-radius: 24px;
            padding: 44px 48px;
            color: #ffffff;
            box-shadow: var(--shadow-hero);
            position: relative;
            overflow: hidden;
        }

        .stats-bar::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            padding: 10px;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.5;
        }

        /* ========= FAQ ========= */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, background 0.25s ease;
        }

        .faq-card.open {
            background: #F0F5FB;
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            padding: 22px 24px;
            cursor: pointer;
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: color 0.25s ease;
        }

        .faq-question:hover {
            color: var(--color-primary-dark);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 18px;
            font-weight: 400;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
        }

        .faq-card.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #ffffff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 24px;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.7;
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
            margin-top: 0;
        }

        .faq-card.open .faq-answer {
            max-height: 240px;
        }

        /* ========= CTA ========= */
        .cta-section {
            padding-bottom: var(--space-section);
        }

        .cta-card {
            position: relative;
            background: linear-gradient(135deg, var(--color-primary-dark), #1E3D6E);
            border-radius: 24px;
            padding: 60px 64px;
            overflow: hidden;
            box-shadow: var(--shadow-hero);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            right: 80px;
            bottom: -100px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 480px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

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

        .cta-card .cta-visual {
            flex-shrink: 0;
            width: 180px;
            height: 220px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
            border: 3px solid rgba(255, 255, 255, 0.12);
            transform: rotate(3deg);
            position: relative;
            z-index: 2;
        }

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

        /* ========= 页脚 ========= */
        .footer {
            background: #1F3E6A;
            color: rgba(255, 255, 255, 0.82);
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-logo:hover {
            color: #ffffff;
            opacity: 0.9;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            padding: 6px 0;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

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

        .footer-contact p {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 4px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ========= 返回顶部 ========= */
        .back-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            border: none;
            box-shadow: 0 8px 20px rgba(43, 92, 158, 0.3);
            font-size: 16px;
            cursor: pointer;
            z-index: 998;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: opacity 0.25s ease, transform 0.25s ease, background 0.25s ease, visibility 0.25s;
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--color-primary-dark);
        }

        /* ========= 响应式 ========= */
        @media (max-width: 1199px) {
            .dock-nav {
                width: 860px;
            }

            .steps-grid {
                gap: 16px;
            }

            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 1023px) {
            :root {
                --space-section: 80px;
            }

            .dock-nav {
                width: calc(100% - 32px);
            }

            .dock-links {
                gap: 2px;
            }

            .dock-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .page-banner h1 {
                font-size: 34px;
            }

            .scene-wrap {
                flex-direction: column;
                gap: 40px;
            }

            .scene-media {
                flex: 0 0 100%;
                width: 100%;
            }

            .scene-media img {
                height: 320px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

            .cta-card {
                flex-direction: column;
                text-align: center;
                padding: 48px 36px;
            }

            .cta-content p {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .cta-actions {
                justify-content: center;
            }

            .cta-card .cta-visual {
                display: none;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 56px;
            }

            .container,
            .row {
                padding-left: 16px;
                padding-right: 16px;
            }

            .dock-nav {
                top: 12px;
                border-radius: 20px;
                padding: 8px 10px;
            }

            .dock-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .dock-actions .btn-primary {
                display: none;
            }

            .mobile-menu {
                border-radius: 0 0 16px 16px;
            }

            .page-banner {
                padding: 130px 0 48px;
            }

            .page-banner h1 {
                font-size: 28px;
            }

            .page-banner .banner-desc {
                font-size: 15px;
            }

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

            .section-header p {
                font-size: 15px;
            }

            .scenes .row .columns,
            .capabilities .row .columns {
                margin-bottom: 20px;
            }

            .scene-media img {
                height: 220px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

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

            .stat-number {
                font-size: 30px;
            }

            .faq-question {
                font-size: 15px;
                padding: 18px 16px;
            }

            .faq-answer-inner {
                padding: 0 16px 20px;
                font-size: 14px;
            }

            .cta-card {
                padding: 36px 24px;
                border-radius: 18px;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .cta-content p {
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .back-top {
                right: 16px;
                bottom: 16px;
                width: 40px;
                height: 40px;
            }
        }

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

            .banner-tag {
                font-size: 12px;
                padding: 6px 10px;
            }

            .scene-list li {
                flex-direction: column;
            }

            .btn-lg {
                width: 100%;
            }

            .cta-actions {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #5B8DEF;
            --color-primary-dark: #2B5C9E;
            --color-primary-light: #EAF1F9;
            --color-accent: #FF9F45;
            --color-success: #34C77B;
            --color-bg: #F7FAFD;
            --color-card: #FFFFFF;
            --color-text: #172B4D;
            --color-text-secondary: #5A7189;
            --color-text-light: #8CA3B9;
            --color-border: #E3EBF3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 24px rgba(39, 80, 132, 0.08);
            --shadow-hover: 0 14px 36px rgba(39, 80, 132, 0.14);
            --shadow-dock: 0 10px 30px rgba(39, 80, 132, 0.12);
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-narrow {
            max-width: 800px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            text-decoration: none;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(91, 141, 239, 0.3);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(43, 92, 158, 0.3);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 8px;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
        }
        .btn-block {
            display: block;
            width: 100%;
        }
        .dock-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: 960px;
            max-width: calc(100% - 32px);
            background: rgba(255, 255, 255, 0.88);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: 100px;
            box-shadow: var(--shadow-dock);
            z-index: 1000;
        }
        .dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px 10px 16px;
            gap: 16px;
        }
        .dock-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
        }
        .dock-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            justify-content: center;
        }
        .dock-link {
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            position: relative;
            transition: color 0.25s ease, background-color 0.25s ease;
        }
        .dock-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .dock-link.active {
            color: var(--color-primary-dark);
            background: var(--color-primary-light);
            font-weight: 600;
        }
        .dock-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary);
        }
        .dock-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.25s ease;
        }
        .hamburger:hover {
            background: var(--color-primary-light);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 16px;
            box-shadow: var(--shadow-dock);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            border-radius: 10px;
            transition: background 0.25s ease, color 0.25s ease;
        }
        .mobile-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .mobile-link.active {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            font-weight: 600;
        }
        .article-page {
            padding-top: 92px;
        }
        .breadcrumb-section {
            padding: 28px 0 8px;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: #C6D4E0;
        }
        .breadcrumb .current {
            color: var(--color-text-light);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 300px;
        }
        .article-header {
            padding: 40px 0 32px;
            background: linear-gradient(120deg, rgba(234, 241, 249, 0.85), rgba(247, 250, 253, 0.5)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }
        .article-header-inner {
            max-width: 800px;
            margin: 0 auto;
            text-align: left;
        }
        .article-category {
            display: inline-block;
            padding: 4px 14px;
            background: var(--color-primary-light);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary-dark);
            margin-bottom: 16px;
        }
        .article-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin: 0 0 20px;
            letter-spacing: -0.02em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-light);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--color-primary);
        }
        .article-content {
            padding: 40px 0 60px;
        }
        .article-cover {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            margin-bottom: 36px;
            object-fit: cover;
            max-height: 480px;
        }
        .article-content-body {
            font-size: 15px;
            line-height: 1.75;
            color: #3A4A60;
        }
        .article-content-body h2 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin: 40px 0 16px;
            padding-bottom: 8px;
        }
        .article-content-body h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin: 32px 0 12px;
        }
        .article-content-body p {
            margin-bottom: 20px;
        }
        .article-content-body ul,
        .article-content-body ol {
            margin: 0 0 20px;
            padding-left: 22px;
        }
        .article-content-body li {
            margin-bottom: 8px;
        }
        .article-content-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-light);
            padding: 16px 22px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-text-secondary);
            margin: 28px 0;
        }
        .article-content-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin: 28px 0;
        }
        .article-content-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content-body a:hover {
            color: var(--color-primary-dark);
        }
        .article-content-body code {
            background: var(--color-primary-light);
            border-radius: 6px;
            padding: 2px 8px;
            font-size: 14px;
            color: var(--color-primary-dark);
        }
        .article-content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            font-size: 14px;
        }
        .article-content-body th,
        .article-content-body td {
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-content-body th {
            background: var(--color-primary-light);
            font-weight: 600;
            color: var(--color-text);
        }
        .article-content-body pre {
            background: #F0F5FB;
            border-radius: var(--radius-md);
            padding: 20px;
            overflow-x: auto;
            margin: 24px 0;
        }
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .not-found-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: var(--color-primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--color-primary);
        }
        .not-found-box p {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 24px;
        }
        .related-section {
            padding: 60px 0 40px;
            background: #fff;
            border-top: 1px solid var(--color-border);
        }
        .section-head {
            margin-bottom: 32px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
        }
        .section-head p {
            font-size: 14px;
            color: var(--color-text-light);
            margin: 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            text-decoration: none;
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--color-primary-light);
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }
        .related-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
            color: var(--color-primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            box-shadow: 0 2px 8px rgba(39, 80, 132, 0.1);
        }
        .related-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin: 0 0 10px;
            transition: color 0.25s ease;
        }
        .related-card:hover .related-body h3 {
            color: var(--color-primary-dark);
        }
        .related-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-link i {
            transition: transform 0.25s ease;
        }
        .related-card:hover .related-link i {
            transform: translateX(4px);
        }
        .back-section {
            padding: 24px 0 80px;
            background: #fff;
        }
        .back-box {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .footer {
            background: #1F3E6A;
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            text-decoration: none;
            margin-bottom: 16px;
        }
        .footer-logo .logo-mark {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            padding: 6px 0;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom p {
            margin: 0;
        }
        @media screen and (max-width: 1024px) {
            .dock-nav {
                width: 720px;
            }
            .dock-link {
                padding: 8px 12px;
                font-size: 13px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 768px) {
            .dock-nav {
                width: calc(100% - 24px);
                top: 12px;
                border-radius: 24px;
            }
            .dock-inner {
                padding: 8px 12px 8px 10px;
            }
            .dock-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .logo-text {
                font-size: 16px;
            }
            .article-page {
                padding-top: 80px;
            }
            .breadcrumb-section {
                padding: 16px 0 4px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .article-header {
                padding: 28px 0 24px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-meta {
                gap: 10px;
                font-size: 12px;
            }
            .article-content {
                padding: 24px 0 40px;
            }
            .related-section {
                padding: 40px 0 28px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .back-section {
                padding: 16px 0 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media screen and (max-width: 520px) {
            .article-title {
                font-size: 22px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .breadcrumb-section {
                padding: 12px 0 0;
            }
            .breadcrumb .current {
                max-width: 160px;
            }
        }