/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #147D7A;
        --primary-dark: #0E5C5A;
        --primary-darker: #0A4846;
        --primary-deep: #093E3D;
        --accent: #E8834A;
        --accent-hover: #D96F36;
        --accent-active: #B85A28;
        --accent-light: #F2B64B;
        --bg-warm: #F6F4EF;
        --bg-light-teal: #EAF2F0;
        --bg-deep: #0B3D3C;
        --text-dark: #1E2D32;
        --text-body: #3F4F55;
        --text-muted: #7A8B8F;
        --text-light: rgba(255, 255, 255, 0.85);
        --text-lighter: rgba(255, 255, 255, 0.65);
        --border-light: #E7E3DA;
        --border-teal: #C8DEDA;
        --radius-lg: 20px;
        --radius-md: 12px;
        --radius-sm: 8px;
        --radius-pill: 999px;
        --shadow-hover: 0 4px 14px rgba(14, 92, 90, 0.08);
        --shadow-btn: 0 4px 0 #B85A28;
        --shadow-btn-hover: 0 6px 0 #A34E1F;
        --line-decor: 2px;
        --spacing-section: 88px;
        --spacing-sm: 40px;
        --container-max: 1200px;
        --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    /* ===== Reset ===== */
    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

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

    body {
        font-family: var(--font-main);
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-body);
        background-color: var(--bg-warm);
        -webkit-font-smoothing: antialiased;
    }

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

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

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

    ul, ol {
        list-style: none;
    }

    /* ===== 容器 ===== */
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 16px;
        font-weight: 600;
        line-height: 1.4;
        padding: 12px 32px;
        border-radius: var(--radius-sm);
        transition: all 0.3s ease;
        text-align: center;
        white-space: nowrap;
        border: 1px solid transparent;
    }

    .btn svg {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
    }

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

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

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

    .btn-primary:active {
        background-color: var(--accent-active);
        transform: translateY(2px);
        box-shadow: 0 2px 0 #A34E1F;
    }

    .btn-outline-light {
        background: transparent;
        border-color: rgba(255, 255, 255, 0.6);
        color: #fff;
    }

    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.12);
        border-color: #fff;
        color: #fff;
    }

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

    .btn-outline-teal:hover {
        background: var(--bg-light-teal);
        color: var(--primary-dark);
    }

    .btn-outline-teal:active {
        background: var(--border-teal);
    }

    /* ===== 徽章标签 ===== */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        font-weight: 500;
        letter-spacing: 0.02em;
        padding: 4px 14px;
        border-radius: var(--radius-pill);
        background: var(--bg-light-teal);
        color: var(--primary-dark);
        border: 1px solid var(--border-teal);
    }

    .badge-accent {
        background: rgba(232, 131, 74, 0.1);
        color: var(--accent-hover);
        border-color: rgba(232, 131, 74, 0.25);
    }

    /* ===== 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(246, 244, 239, 0.96);
        backdrop-filter: blur(8px);
        border-bottom: 0.5px solid var(--border-light);
        transition: box-shadow 0.3s ease;
    }

    .site-header.scrolled {
        box-shadow: 0 2px 12px rgba(14, 92, 90, 0.06);
    }

    .nav-container {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
    }

    .nav-left, .nav-right {
        display: flex;
        align-items: center;
        gap: 8px;
        flex: 1;
    }

    .nav-right {
        justify-content: flex-end;
    }

    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        align-items: center;
        gap: 10px;
        z-index: 2;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--primary-dark);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .logo-badge {
        font-size: 11px;
        background: var(--accent);
        color: #fff;
        padding: 2px 8px;
        border-radius: var(--radius-pill);
        letter-spacing: 0.06em;
        transform: translateY(-2px);
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
        padding: 8px 14px;
        border-radius: var(--radius-sm);
        position: relative;
        transition: color 0.25s ease, background 0.25s ease;
    }

    .nav-link:hover {
        color: var(--primary);
        background: rgba(20, 125, 122, 0.06);
    }

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

    .nav-link.active::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 14px;
        right: 14px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }

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

    .nav-download {
        font-size: 14px;
        padding: 6px 18px;
        background: var(--primary);
        color: #fff;
        border-radius: var(--radius-pill);
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: background 0.25s ease, box-shadow 0.25s ease;
    }

    .nav-download:hover {
        background: var(--primary-darker);
        box-shadow: 0 2px 8px rgba(14, 92, 90, 0.2);
        color: #fff;
    }

    .mobile-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: var(--radius-sm);
        align-items: center;
        justify-content: center;
        color: var(--text-body);
        transition: background 0.2s;
    }

    .mobile-toggle:hover {
        background: var(--bg-light-teal);
    }

    .mobile-toggle svg {
        width: 24px;
        height: 24px;
    }

    .mobile-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-warm);
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 8px 24px rgba(14, 92, 90, 0.06);
        padding: 12px 24px 20px;
        z-index: 99;
        max-height: calc(100vh - 72px);
        overflow-y: auto;
    }

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

    .mobile-menu .nav-link {
        display: flex;
        padding: 14px 8px;
        font-size: 16px;
        border-bottom: 1px solid var(--border-light);
        border-radius: 0;
        color: var(--text-body);
    }

    .mobile-menu .nav-link:last-of-type {
        border-bottom: none;
    }

    .mobile-menu .nav-link.active {
        color: var(--primary);
    }

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

    .mobile-menu .nav-download {
        margin-top: 10px;
        justify-content: center;
        background: var(--primary);
        color: #fff;
        border-radius: var(--radius-sm);
        padding: 12px;
        border-bottom: none;
        font-weight: 600;
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 640px;
        height: 90vh;
        max-height: 860px;
        display: flex;
        align-items: center;
        background: linear-gradient(135deg, #0B3D3C 0%, #0E5C5A 55%, #147D7A 100%);
        overflow: hidden;
    }

    .hero-bg-image {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.18;
        mix-blend-mode: luminosity;
    }

    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 61, 60, 0.88) 0%, rgba(14, 92, 90, 0.75) 50%, rgba(20, 125, 122, 0.55) 100%);
    }

    .hero-decor {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        pointer-events: none;
    }

    .hero-decor-line {
        position: absolute;
        width: 60%;
        height: 1px;
        background: rgba(255, 255, 255, 0.08);
        transform: rotate(-18deg);
        top: 20%;
        left: -10%;
        border-top: 1px dashed rgba(255, 255, 255, 0.14);
    }

    .hero-decor-line-2 {
        top: 65%;
        left: 50%;
        width: 45%;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1.1fr 1fr;
        gap: 60px;
        align-items: center;
        padding-top: 24px;
        padding-bottom: 24px;
    }

    .hero-left {
        padding-left: 0;
    }

    .hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        font-weight: 500;
        color: var(--accent-light);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.15);
        padding: 5px 16px;
        border-radius: var(--radius-pill);
        margin-bottom: 24px;
        letter-spacing: 0.02em;
    }

    .hero-eyebrow svg {
        width: 15px;
        height: 15px;
    }

    .hero h1 {
        font-size: 44px;
        line-height: 1.3;
        font-weight: 700;
        color: #fff;
        margin-bottom: 20px;
        letter-spacing: -0.01em;
    }

    .hero h1 .highlight {
        color: var(--accent-light);
    }

    .hero-sub {
        font-size: 18px;
        line-height: 1.8;
        color: var(--text-light);
        margin-bottom: 32px;
        max-width: 480px;
    }

    .hero-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
        margin-bottom: 16px;
    }

    .hero-right {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero-window {
        position: relative;
        width: 100%;
        max-width: 520px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: var(--radius-lg);
        padding: 14px;
        backdrop-filter: blur(4px);
        box-shadow: 0 24px 48px rgba(0, 0, 0, 0.22);
    }

    .hero-window-header {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 6px 8px 14px;
    }

    .hero-window-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.2);
    }

    .hero-window-dot.on {
        background: var(--accent);
    }

    .hero-window-img {
        border-radius: 10px;
        overflow: hidden;
        background: rgba(255, 255, 255, 0.08);
        min-height: 260px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero-window-img img {
        width: 100%;
        height: auto;
        min-height: 240px;
        object-fit: cover;
    }

    .hero-status-card {
        position: absolute;
        bottom: 18px;
        right: -16px;
        display: flex;
        align-items: center;
        gap: 10px;
        background: #fff;
        border-radius: var(--radius-md);
        padding: 12px 20px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
        animation: float 3s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-6px); }
    }

    .hero-status-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #2DCE89;
        box-shadow: 0 0 0 3px rgba(45, 206, 137, 0.2);
    }

    .hero-status-text {
        font-size: 13px;
        color: var(--text-body);
        font-weight: 500;
        line-height: 1.4;
    }

    .hero-status-text strong {
        display: block;
        color: var(--text-dark);
        font-size: 14px;
    }

    .hero-scroll {
        position: absolute;
        bottom: 28px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        align-items: center;
        gap: 8px;
        color: rgba(255, 255, 255, 0.5);
        font-size: 13px;
        z-index: 2;
        letter-spacing: 0.03em;
    }

    .hero-scroll svg {
        width: 16px;
        height: 16px;
        animation: scrollHint 1.8s ease-in-out infinite;
    }

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

    /* ===== 信任徽章 ===== */
    .trust-bar {
        background: var(--bg-warm);
        border-bottom: 1px solid var(--border-light);
        padding: 28px 0;
    }

    .trust-list {
        display: flex;
        align-items: center;
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 24px;
    }

    .trust-item {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
    }

    .trust-item svg {
        width: 22px;
        height: 22px;
        flex-shrink: 0;
        color: var(--primary);
    }

    .trust-item span {
        white-space: nowrap;
    }

    /* ===== 区块通用 ===== */
    .section {
        padding: var(--spacing-section) 0;
    }

    .section-head {
        text-align: center;
        max-width: 640px;
        margin: 0 auto 56px;
    }

    .section-kicker {
        display: inline-block;
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: var(--primary);
        background: var(--bg-light-teal);
        padding: 6px 18px;
        border-radius: var(--radius-pill);
        margin-bottom: 16px;
    }

    .section-head h2 {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-dark);
        margin-bottom: 14px;
    }

    .section-head p {
        font-size: 17px;
        line-height: 1.7;
        color: var(--text-muted);
    }

    .section-title-left {
        text-align: left;
        margin-left: 0;
        margin-right: 0;
    }

    /* ===== 功能亮点 ===== */
    .features {
        background: #fff;
        padding: var(--spacing-section) 0;
    }

    .features-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr;
        gap: 56px;
        align-items: center;
    }

    .features-slider {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: 0 8px 30px rgba(14, 92, 90, 0.08);
        background: var(--bg-light-teal);
    }

    .slider-track {
        display: flex;
        transition: transform 0.45s ease;
    }

    .slider-slide {
        min-width: 100%;
        position: relative;
    }

    .slider-slide img {
        width: 100%;
        aspect-ratio: 16 / 10;
        object-fit: cover;
        display: block;
    }

    .slider-caption {
        position: absolute;
        bottom: 16px;
        left: 16px;
        right: 16px;
        background: rgba(11, 61, 60, 0.82);
        color: #fff;
        border-radius: 8px;
        padding: 10px 16px;
        font-size: 14px;
        font-weight: 500;
        backdrop-filter: blur(4px);
    }

    .slider-arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.55);
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: var(--primary-dark);
        transition: background 0.25s, transform 0.25s;
        z-index: 5;
        backdrop-filter: blur(4px);
    }

    .slider-arrow:hover {
        background: rgba(255, 255, 255, 0.85);
    }

    .slider-arrow:focus-visible {
        outline: 2px solid var(--primary);
    }

    .slider-prev {
        left: 14px;
    }

    .slider-next {
        right: 14px;
    }

    .slider-arrow svg {
        width: 18px;
        height: 18px;
    }

    .slider-dots {
        position: absolute;
        bottom: 58px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 8px;
        z-index: 5;
    }

    .slider-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.55);
        transition: all 0.3s;
    }

    .slider-dot.active {
        background: var(--accent);
        width: 24px;
        border-radius: var(--radius-pill);
    }

    .features-list {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }

    .feature-item {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        padding: 18px;
        border-radius: var(--radius-md);
        background: var(--bg-warm);
        border: 1px solid transparent;
        transition: border-color 0.25s, box-shadow 0.25s;
    }

    .feature-item:hover {
        border-color: var(--border-teal);
        box-shadow: var(--shadow-hover);
    }

    .feature-icon {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        border-radius: var(--radius-md);
        background: var(--bg-light-teal);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
    }

    .feature-icon svg {
        width: 24px;
        height: 24px;
    }

    .feature-text h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 6px;
        line-height: 1.4;
    }

    .feature-text p {
        font-size: 14px;
        line-height: 1.7;
        color: var(--text-muted);
    }

    /* ===== 系统要求 ===== */
    .system-req {
        background: var(--bg-light-teal);
        padding: var(--spacing-section) 0;
    }

    .system-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        align-items: stretch;
    }

    .system-card {
        background: #fff;
        border-radius: 16px;
        padding: 32px;
        border: 1px solid rgba(20, 125, 122, 0.08);
        transition: box-shadow 0.3s;
    }

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

    .system-card-header {
        display: flex;
        align-items: center;
        gap: 14px;
        margin-bottom: 24px;
    }

    .system-card-icon {
        width: 44px;
        height: 44px;
        border-radius: var(--radius-md);
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

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

    .system-card-header h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-dark);
        line-height: 1.4;
    }

    .system-subtitle {
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 16px;
        font-weight: 500;
    }

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

    .system-list-item {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 14px;
        line-height: 1.6;
        color: var(--text-body);
        padding: 8px 12px;
        background: var(--bg-warm);
        border-radius: var(--radius-sm);
    }

    .system-list-item svg {
        width: 16px;
        height: 16px;
        flex-shrink: 0;
        margin-top: 3px;
        color: var(--primary);
    }

    .system-download-card {
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-deep) 100%);
        border-radius: 16px;
        padding: 32px;
        color: #fff;
        display: flex;
        flex-direction: column;
        justify-content: center;
        position: relative;
        overflow: hidden;
    }

    .system-download-card::before {
        content: "";
        position: absolute;
        top: -30px;
        right: -30px;
        width: 120px;
        height: 120px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.06);
    }

    .system-download-card h3 {
        font-size: 22px;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .system-download-card p {
        font-size: 15px;
        line-height: 1.7;
        color: var(--text-light);
        margin-bottom: 24px;
    }

    .system-download-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        align-self: flex-start;
        background: var(--accent);
        color: #fff;
        font-weight: 600;
        font-size: 15px;
        padding: 10px 28px;
        border-radius: var(--radius-sm);
        box-shadow: 0 3px 0 #B85A28;
        transition: all 0.3s;
    }

    .system-download-btn:hover {
        background: var(--accent-hover);
        box-shadow: 0 5px 0 #B85A28;
        transform: translateY(-1px);
        color: #fff;
    }

    .system-tip {
        margin-top: 16px;
        font-size: 13px;
        color: var(--text-lighter);
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .system-tip svg {
        width: 15px;
        height: 15px;
    }

    /* ===== 用户评价 ===== */
    .testimonials {
        background: var(--bg-warm);
        padding: var(--spacing-section) 0;
    }

    .testimonial-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .testimonial-card {
        background: #fff;
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        padding: 28px;
        transition: box-shadow 0.3s, transform 0.3s;
        display: flex;
        flex-direction: column;
    }

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

    .testimonial-stars {
        display: flex;
        gap: 4px;
        margin-bottom: 16px;
        color: var(--accent);
    }

    .testimonial-stars svg {
        width: 16px;
        height: 16px;
        fill: var(--accent);
    }

    .testimonial-text {
        font-size: 15px;
        line-height: 1.8;
        color: var(--text-body);
        flex: 1;
        margin-bottom: 20px;
    }

    .testimonial-person {
        display: flex;
        align-items: center;
        gap: 12px;
        border-top: 1px solid var(--border-light);
        padding-top: 18px;
    }

    .testimonial-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--bg-light-teal);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 16px;
        flex-shrink: 0;
    }

    .testimonial-name {
        font-size: 14px;
        font-weight: 600;
        color: var(--text-dark);
        line-height: 1.4;
    }

    .testimonial-role {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.4;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: #fff;
        padding: var(--spacing-section) 0;
    }

    .faq-list {
        max-width: 760px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background: var(--bg-warm);
        border: 1px solid transparent;
        border-radius: var(--radius-md);
        padding: 24px 28px;
        transition: border-color 0.3s, box-shadow 0.3s;
    }

    .faq-item.active {
        border-color: var(--primary);
        background: #fff;
        box-shadow: var(--shadow-hover);
    }

    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-dark);
        text-align: left;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        line-height: 1.5;
        transition: color 0.25s;
    }

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

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

    .faq-icon {
        flex-shrink: 0;
        width: 24px;
        height: 24px;
        position: relative;
        border-radius: 50%;
        background: var(--bg-light-teal);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s;
    }

    .faq-icon::before {
        content: "+";
        font-size: 18px;
        font-weight: 500;
        line-height: 1;
    }

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

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        font-size: 15px;
        line-height: 1.7;
        color: var(--text-body);
    }

    .faq-item.active .faq-answer {
        max-height: 320px;
        padding-top: 14px;
        margin-top: 14px;
        border-top: 1px solid var(--border-light);
    }

    .faq-answer p {
        margin-bottom: 8px;
    }

    .faq-answer p:last-child {
        margin-bottom: 0;
    }

    /* ===== 最新信息 ===== */
    .latest-info {
        background: var(--bg-light-teal);
        padding: var(--spacing-section) 0;
    }

    .news-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        margin-bottom: 36px;
    }

    .news-card {
        background: #fff;
        border: 1px solid var(--border-light);
        border-left: 3px solid var(--primary);
        border-radius: var(--radius-md);
        padding: 24px;
        transition: box-shadow 0.3s, transform 0.3s;
        display: flex;
        flex-direction: column;
    }

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

    .news-card-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 12px;
        gap: 12px;
    }

    .news-tag {
        font-size: 13px;
        font-weight: 500;
        color: var(--primary);
        background: var(--bg-light-teal);
        padding: 3px 12px;
        border-radius: var(--radius-pill);
        letter-spacing: 0.02em;
    }

    .news-time {
        font-size: 13px;
        color: var(--text-muted);
        white-space: nowrap;
    }

    .news-title {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.5;
        margin-bottom: 8px;
    }

    .news-title a {
        color: var(--text-dark);
        transition: color 0.25s;
    }

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

    .news-excerpt {
        font-size: 14px;
        line-height: 1.7;
        color: var(--text-muted);
        margin-bottom: 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-more {
        font-size: 14px;
        font-weight: 500;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        margin-top: auto;
        transition: gap 0.25s;
    }

    .news-more:hover {
        gap: 8px;
        color: var(--accent-hover);
    }

    .news-empty {
        grid-column: 1 / -1;
        text-align: center;
        padding: 48px 24px;
        background: #fff;
        border-radius: var(--radius-md);
        border: 1px dashed var(--border-teal);
    }

    .news-empty svg {
        width: 48px;
        height: 48px;
        color: var(--text-muted);
        margin: 0 auto 16px;
        opacity: 0.4;
    }

    .news-empty p {
        font-size: 15px;
        color: var(--text-muted);
    }

    .news-footer {
        text-align: center;
    }

    .news-footer .btn {
        background: transparent;
        border: 1px solid var(--primary);
        color: var(--primary);
    }

    .news-footer .btn:hover {
        background: var(--bg-light-teal);
    }

    /* ===== CTA 横幅 ===== */
    .cta-banner {
        background: var(--bg-warm);
        padding: var(--spacing-section) 0;
    }

    .cta-inner {
        position: relative;
        background: linear-gradient(135deg, #0B3D3C 0%, #0E5C5A 60%, #147D7A 100%);
        border-radius: var(--radius-lg);
        padding: 64px 48px;
        text-align: center;
        color: #fff;
        overflow: hidden;
    }

    .cta-decor {
        position: absolute;
        width: 180px;
        height: 1px;
        background: transparent;
        border-top: 1px dashed rgba(255, 255, 255, 0.2);
        top: 50%;
    }

    .cta-decor-left {
        left: -40px;
        transform: rotate(-18deg);
    }

    .cta-decor-right {
        right: -40px;
        transform: rotate(18deg);
    }

    .cta-inner h2 {
        font-size: 30px;
        font-weight: 700;
        line-height: 1.3;
        margin-bottom: 14px;
        letter-spacing: -0.01em;
    }

    .cta-inner p {
        font-size: 17px;
        color: var(--text-light);
        margin-bottom: 32px;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    .cta-inner .btn-primary {
        font-size: 17px;
        padding: 14px 40px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-deep);
        color: rgba(255, 255, 255, 0.78);
        padding: 64px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 48px;
    }

    .footer-brand .logo {
        position: static;
        transform: none;
        justify-content: flex-start;
        margin-bottom: 16px;
    }

    .footer-brand .logo-text {
        color: #fff;
        font-size: 20px;
    }

    .footer-brand .logo-icon {
        width: 32px;
        height: 32px;
    }

    .footer-desc {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.55);
        max-width: 300px;
    }

    .footer-col-title {
        font-size: 15px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 18px;
        letter-spacing: 0.02em;
    }

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

    .footer-links a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.55);
        transition: color 0.25s;
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
    }

    .footer-bottom span {
        margin: 0 6px;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .hero-content {
            grid-template-columns: 1fr;
            text-align: center;
            gap: 40px;
        }

        .hero-sub {
            margin-left: auto;
            margin-right: auto;
        }

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

        .hero-right {
            max-width: 520px;
            margin: 0 auto;
            width: 100%;
        }

        .hero-status-card {
            right: 10px;
        }

        .features-grid {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .features-slider {
            max-width: 720px;
            margin: 0 auto;
        }

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

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

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

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

    @media (max-width: 768px) {
        .nav-left, .nav-right {
            display: none;
        }

        .mobile-toggle {
            display: flex;
        }

        .mobile-menu {
            display: block;
        }

        .hero {
            min-height: 640px;
            height: auto;
            padding: 80px 0 70px;
        }

        .hero-content {
            padding-top: 0;
            padding-bottom: 0;
            gap: 32px;
        }

        .hero h1 {
            font-size: 34px;
        }

        .hero-sub {
            font-size: 16px;
        }

        .section {
            padding: 64px 0;
        }

        .section-head h2 {
            font-size: 26px;
        }

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

        .testimonial-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

        .cta-inner {
            padding: 48px 24px;
        }

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

        .cta-inner .btn-primary {
            padding: 12px 32px;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .logo-text {
            font-size: 17px;
        }

        .logo-badge {
            display: none;
        }

        .hero h1 {
            font-size: 28px;
        }

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

        .hero-actions {
            flex-direction: column;
            width: 100%;
        }

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

        .trust-item {
            font-size: 14px;
        }

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

        .feature-item {
            padding: 14px;
        }

        .feature-icon {
            width: 40px;
            height: 40px;
        }

        .system-card {
            padding: 24px;
        }

        .testimonial-card {
            padding: 22px;
        }

        .faq-item {
            padding: 18px;
        }

        .news-card {
            padding: 20px;
        }

        .cta-inner {
            padding: 36px 20px;
            border-radius: var(--radius-md);
        }

        .cta-inner h2 {
            font-size: 22px;
        }

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

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

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

        .hero-scroll {
            display: none;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #147D7A;
            --primary-dark: #0E5C5A;
            --primary-darker: #0A4846;
            --accent: #E8834A;
            --accent-hover: #D96F36;
            --accent-active: #B85A28;
            --bg-warm: #F6F4EF;
            --bg-light: #EAF2F0;
            --bg-dark: #0B3D3C;
            --text-main: #222B2A;
            --text-sub: #5A6B68;
            --border-color: rgba(20, 125, 122, 0.12);
            --white: #FFFFFF;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 12px rgba(14, 92, 90, 0.06);
            --shadow-hover: 0 4px 14px rgba(14, 92, 90, 0.08);
            --font-base: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --space-section: 88px;
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg-warm);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button {
            font-family: var(--font-base);
            border: none;
            cursor: pointer;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: var(--font-base);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(246, 244, 239, 0.96);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(14, 92, 90, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding: 8px 2px;
            letter-spacing: 0.02em;
            transition: color 0.2s ease, border-color 0.2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.28s ease;
        }

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

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

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

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            padding: 8px 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            display: block;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            line-height: 1.4;
            border: 1px solid transparent;
            transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, transform 0.15s ease;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 0 #B85A28;
        }

        .btn-accent:hover {
            background-color: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 0 #B85A28;
        }

        .btn-accent:active {
            background-color: var(--accent-active);
            transform: translateY(2px);
            box-shadow: 0 2px 0 #B85A28;
        }

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

        .btn-outline:hover {
            background-color: var(--bg-light);
            color: var(--primary-dark);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
            box-shadow: none;
        }

        .btn-sm.btn-accent:hover {
            box-shadow: 0 2px 0 #B85A28;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--white);
        }

        .nav-toggle svg {
            width: 22px;
            height: 22px;
            stroke: var(--text-main);
        }

        .mobile-menu {
            display: none;
            background-color: var(--bg-warm);
            border-top: 1px solid var(--border-color);
            padding: 16px 0;
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.2s ease, color 0.2s ease;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            background-color: var(--bg-light);
        }

        /* ===== Page Hero (分类页顶部) ===== */
        .page-hero {
            background: linear-gradient(135deg, #E8F1EF 0%, #F6F4EF 100%);
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

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

        .breadcrumb .sep {
            color: rgba(34, 43, 42, 0.35);
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            max-width: 720px;
        }

        .page-hero .lead {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 680px;
            margin-bottom: 8px;
        }

        /* ===== Section Head ===== */
        .section-head {
            margin-bottom: 48px;
            max-width: 620px;
        }

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

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== Guide Section (垂直条目流) ===== */
        .guide-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-warm);
        }

        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .guide-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .guide-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(20, 125, 122, 0.25);
        }

        .guide-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--bg-light);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            border: 1px solid rgba(20, 125, 122, 0.15);
        }

        .guide-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .guide-content p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-sub);
            max-width: 680px;
        }

        /* ===== Scenario Section ===== */
        .scenario-section {
            padding: var(--space-section) 0;
            background-color: var(--white);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .scenario-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .scenario-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .scenario-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 16px;
        }

        .scenario-media::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 61, 60, 0.35) 100%);
            border-radius: 16px;
            pointer-events: none;
        }

        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
            margin-top: 28px;
        }

        .scenario-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .scenario-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--accent);
            flex-shrink: 0;
            margin-top: 10px;
            box-shadow: 0 0 0 4px rgba(232, 131, 74, 0.15);
        }

        .scenario-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .scenario-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        /* ===== Notice Section ===== */
        .notice-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-light);
        }

        .notice-card {
            background-color: var(--white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 48px;
            align-items: center;
        }

        .notice-card h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .notice-card .notice-intro {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .notice-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .notice-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 18px;
            background-color: var(--bg-light);
            border-radius: 12px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            border-left: 3px solid var(--primary);
        }

        .notice-item svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--primary);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-warm);
        }

        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 0;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: background-color 0.2s ease;
        }

        .faq-question:hover {
            background-color: rgba(20, 125, 122, 0.03);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--bg-light);
            color: var(--primary);
            font-size: 20px;
            font-weight: 400;
            flex-shrink: 0;
            transition: transform 0.3s ease, background-color 0.3s ease;
        }

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

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-sub);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 22px;
            padding-top: 2px;
        }

        /* ===== CTA Bar ===== */
        .cta-bar {
            padding: 64px 0;
            background-color: var(--bg-dark);
            background-image: linear-gradient(135deg, #0B3D3C 0%, #0E5C5A 100%);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 40px 48px;
            position: relative;
            overflow: hidden;
        }

        .cta-inner::before,
        .cta-inner::after {
            content: "";
            position: absolute;
            width: 120px;
            height: 2px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 2px;
        }

        .cta-inner::before {
            top: 24px;
            left: 24px;
            transform: rotate(-30deg);
        }

        .cta-inner::after {
            bottom: 24px;
            right: 24px;
            transform: rotate(-30deg);
        }

        .cta-inner p {
            font-size: 24px;
            font-weight: 700;
            color: var(--bg-warm);
            line-height: 1.4;
            max-width: 520px;
            margin: 0;
        }

        .cta-inner .btn-accent {
            flex-shrink: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: #0B3D3C;
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand .logo-text {
            color: var(--bg-warm);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            margin-top: 12px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--bg-warm);
            margin-bottom: 16px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            align-items: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 20px;
            }

            .logo-text {
                font-size: 20px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                min-height: 64px;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-inner .logo {
                order: 2;
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }

            .header-inner .nav-toggle {
                order: 1;
            }

            .page-hero {
                padding: 48px 0 40px;
            }

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

            .page-hero .lead {
                font-size: 16px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .guide-item {
                padding: 20px;
                gap: 16px;
            }

            .guide-num {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }

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

            .notice-card {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 32px 24px;
            }

            .cta-inner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }

            .cta-inner p {
                font-size: 20px;
            }

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

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

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }

            .guide-item {
                flex-direction: column;
            }

            .guide-num {
                margin-bottom: 4px;
            }

            .scenario-item {
                gap: 12px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: article */
/* ===== Design Tokens ===== */
        :root {
            --primary: #147D7A;
            --primary-dark: #0E5C5A;
            --primary-darker: #0A4846;
            --accent: #E8834A;
            --accent-hover: #D96F36;
            --accent-dark: #B85A28;
            --bg: #F6F4EF;
            --bg-teal: #EAF2F0;
            --footer-bg: #0B3D3C;
            --text: #1E2B2A;
            --text-light: #5A6B6A;
            --text-lighter: #8A9A99;
            --border: #E0E4E2;
            --white: #FFFFFF;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 8px rgba(14, 92, 90, 0.06);
            --shadow: 0 4px 14px rgba(14, 92, 90, 0.08);
            --shadow-lg: 0 8px 24px rgba(14, 92, 90, 0.12);
            --container: 1200px;
            --section-space: 80px;
            --block-space: 40px;
            --transition: 0.2s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

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

        input, textarea, select {
            font-family: inherit;
            font-size: 16px;
        }

        ul, ol {
            list-style: none;
        }

        /* ===== Layout ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.2;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 0 var(--accent-dark);
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 4px 0 #A34D1F;
            transform: translateY(-1px);
        }

        .btn-accent:active {
            background: var(--accent-dark);
            transform: translateY(2px);
            box-shadow: 0 2px 0 #8F451C;
        }

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

        .btn-outline:hover {
            background: var(--bg-teal);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255,255,255,0.6);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            color: #fff;
        }

        .btn-large {
            padding: 16px 36px;
            font-size: 17px;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(246, 244, 239, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 0.5px solid var(--border);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(14, 92, 90, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            height: 72px;
            position: relative;
        }

        .site-header .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            margin: 0 auto;
            order: 2;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            order: 1;
            margin-right: auto;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
            order: 3;
            margin-left: auto;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            padding: 6px 2px;
            position: relative;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }

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

        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-download {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            border-bottom: none;
            font-weight: 600;
            transition: background 0.2s;
        }

        .nav-download:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
            box-shadow: 0 8px 24px rgba(14, 92, 90, 0.08);
            z-index: 99;
        }

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

        .mobile-nav-link {
            display: block;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            border-bottom: 0.5px solid var(--border);
            transition: background 0.2s;
        }

        .mobile-nav-link:hover {
            background: var(--bg-teal);
            color: var(--primary);
        }

        .mobile-nav-link:last-child {
            border-bottom: none;
        }

        .mobile-nav-cta {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, #EAF2F0 0%, #F6F4EF 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(20, 125, 122, 0.03);
        }

        .article-hero::after {
            content: '';
            position: absolute;
            left: -40px;
            bottom: -80px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(232, 131, 74, 0.04);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }

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

        .breadcrumb-sep {
            color: var(--text-lighter);
        }

        .breadcrumb-current {
            color: var(--text-light);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-light);
        }

        .meta-item svg {
            width: 15px;
            height: 15px;
            flex-shrink: 0;
        }

        .meta-item .meta-label {
            color: var(--text-lighter);
        }

        /* ===== Article Body ===== */
        .article-wrapper {
            max-width: 760px;
            margin: 0 auto;
            padding: 56px 0 0;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin: 1.8em 0 0.8em;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
            margin: 1.6em 0 0.6em;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 1.4em 0 0.5em;
        }

        .article-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 1.5em 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 1em 0 1.5em;
            padding-left: 1.6em;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 0.5em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-teal);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }

        .article-body code {
            background: var(--bg-teal);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 14px;
        }

        .article-body pre {
            background: #1E2B2A;
            color: #E8E6E1;
            padding: 20px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 1.5em 0;
            line-height: 1.6;
            font-size: 14px;
        }

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

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 14px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--bg-teal);
            font-weight: 600;
            color: var(--primary-dark);
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 24px;
            background: var(--bg-teal);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .not-found h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        /* ===== Download Hint ===== */
        .article-download-hint {
            margin-top: 40px;
            padding: 16px 24px;
            background: var(--bg-teal);
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .article-download-hint .hint-link {
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px solid var(--primary);
            padding-bottom: 1px;
        }

        .article-download-hint .hint-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* ===== Bottom Links ===== */
        .article-bottom-links {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            margin-top: 48px;
            padding: 24px 0 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            text-decoration: none;
            padding: 8px 4px;
            transition: color 0.2s;
        }

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

        .back-link svg {
            width: 16px;
            height: 16px;
        }

        /* ===== Related Posts ===== */
        .related-posts {
            max-width: 760px;
            margin: 56px auto 0;
            padding-bottom: 16px;
        }

        .related-posts .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 24px;
            position: relative;
            padding-left: 18px;
        }

        .related-posts .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 4px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            display: block;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0;
            overflow: hidden;
            text-decoration: none;
            transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
            position: relative;
        }

        .related-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .related-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: var(--primary);
            text-decoration: none;
            color: inherit;
        }

        .related-card:hover::before {
            opacity: 1;
        }

        .related-card-image {
            height: 120px;
            overflow: hidden;
            background: var(--bg-teal);
        }

        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

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

        .related-card-content {
            padding: 16px 20px 20px;
        }

        .related-card .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--bg-teal);
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 8px;
            transition: color 0.2s;
        }

        .related-card:hover h3 {
            color: var(--primary);
        }

        .related-card p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-light);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-date {
            font-size: 13px;
            color: var(--text-lighter);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--section-space) 0 80px;
        }

        .cta-banner {
            background: linear-gradient(135deg, #0E5C5A 0%, #0B3D3C 100%);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            left: -40px;
            top: 50%;
            transform: translateY(-50%);
            width: 120px;
            height: 120px;
            border: 2px dashed rgba(255,255,255,0.2);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            right: -30px;
            bottom: -40px;
            width: 100px;
            height: 100px;
            border: 2px dashed rgba(255,255,255,0.15);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 16px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn {
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            text-decoration: none;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            max-width: 340px;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 20px 0 24px;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
            text-align: center;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.4);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-inner {
                gap: 16px;
            }

            .nav-left {
                gap: 20px;
            }

            .nav-right {
                gap: 20px;
            }

            .nav-link {
                font-size: 14px;
            }

            .nav-download {
                padding: 6px 16px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-inner {
                height: 64px;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .site-header .logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }

            .mobile-nav {
                display: none;
            }

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

            .article-hero {
                padding: 32px 0 28px;
            }

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

            .article-meta {
                gap: 14px;
            }

            .article-wrapper {
                padding-top: 32px;
            }

            .article-body {
                font-size: 15px;
                line-height: 1.85;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-card-image {
                height: 140px;
            }

            .cta-banner {
                padding: 40px 24px;
                border-radius: 16px;
            }

            .cta-banner h2 {
                font-size: 22px;
            }

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

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

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

            .related-posts .section-title {
                font-size: 22px;
            }
        }

        @media (max-width: 480px) {
            body {
                font-size: 15px;
            }

            .header-inner {
                height: 60px;
            }

            .logo-text {
                font-size: 18px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
            }

            .article-title {
                font-size: 20px;
            }

            .article-meta {
                gap: 10px;
                flex-direction: column;
                align-items: flex-start;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-download-hint {
                padding: 14px 16px;
                font-size: 14px;
            }

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

            .cta-section {
                padding: 48px 0;
            }

            .cta-banner {
                padding: 32px 20px;
            }

            .cta-banner h2 {
                font-size: 20px;
            }

            .cta-banner p {
                font-size: 14px;
            }

            .btn-large {
                padding: 14px 28px;
                font-size: 15px;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

        @media (min-width: 769px) {
            .mobile-nav {
                display: none !important;
            }
        }