/* roulang page: index */
:root {
        --primary-dark: #12161C;
        --accent-orange: #FF5A1F;
        --bg-warm: #F5F4F0;
        --card-dark: #1D242D;
        --success-green: #0E8A5E;
        --warning-yellow: #E6B800;
        --text-main: #2A2E34;
        --text-muted: #6B7280;
        --text-on-dark: #E8E6E1;
        --border-light: #E2E0DA;
        --border-dark: rgba(255, 255, 255, 0.08);
        --radius-md: 8px;
        --radius-sm: 4px;
        --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
        --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
        --container-max: 1200px;
        --space-section-desktop: 110px;
        --space-section-tablet: 72px;
        --space-section-mobile: 48px;
        --font-main: "Noto Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        --font-display: "Inter", "Noto Sans SC", system-ui, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-main);
        font-size: 16px;
        line-height: 1.75;
        color: var(--text-main);
        background-color: var(--bg-warm);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

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

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

    a:hover {
        color: #E04A12;
    }

    a:focus-visible, button:focus-visible, input:focus-visible {
        outline: 2px solid var(--accent-orange);
        outline-offset: 2px;
        border-radius: var(--radius-sm);
    }

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

    .section {
        padding: var(--space-section-desktop) 0;
    }

    .section-tight {
        padding: 72px 0;
    }

    .section-bg-light {
        background-color: var(--bg-warm);
    }

    .section-bg-white {
        background-color: #FFFFFF;
    }

    .section-bg-dark {
        background-color: var(--primary-dark);
        color: var(--text-on-dark);
    }

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

    .text-accent {
        color: var(--accent-orange);
    }

    .section-heading {
        font-family: var(--font-display);
        font-size: clamp(1.6rem, 3vw, 2.4rem);
        font-weight: 700;
        line-height: 1.25;
        letter-spacing: -0.02em;
        margin-bottom: 16px;
        color: var(--text-main);
    }

    .section-bg-dark .section-heading {
        color: var(--text-on-dark);
    }

    .section-sub {
        font-size: 1rem;
        color: var(--text-muted);
        max-width: 620px;
        line-height: 1.7;
        margin-bottom: 48px;
    }

    .section-bg-dark .section-sub {
        color: rgba(232, 230, 225, 0.7);
    }

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

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

    /* ===== 导航 ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background-color: rgba(18, 22, 28, 0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid transparent;
        transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .site-header.scrolled {
        background-color: rgba(18, 22, 28, 0.96);
        border-bottom-color: rgba(255, 255, 255, 0.06);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .nav-wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 76px;
    }

    .brand-logo {
        font-family: var(--font-display);
        font-size: 1.15rem;
        font-weight: 800;
        color: #FFFFFF;
        letter-spacing: -0.01em;
        display: flex;
        align-items: center;
        gap: 6px;
        white-space: nowrap;
    }

    .brand-logo .logo-highlight {
        color: var(--accent-orange);
    }

    .brand-logo:hover {
        color: #FFFFFF;
    }

    .nav-menu {
        display: flex;
        align-items: center;
        gap: 32px;
        list-style: none;
        margin: 0;
    }

    .nav-menu li a {
        color: rgba(255, 255, 255, 0.75);
        font-size: 0.95rem;
        font-weight: 500;
        padding: 10px 0;
        position: relative;
        transition: color 0.25s ease;
    }

    .nav-menu li a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 2px;
        width: 0;
        height: 2px;
        background-color: var(--accent-orange);
        transition: width 0.25s ease;
    }

    .nav-menu li a:hover {
        color: #FFFFFF;
    }

    .nav-menu li a:hover::after {
        width: 100%;
    }

    .nav-menu li a.active {
        color: #FFFFFF;
        font-weight: 600;
    }

    .nav-menu li a.active::after {
        width: 100%;
    }

    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background-color: var(--accent-orange);
        color: #FFFFFF !important;
        padding: 10px 20px !important;
        border-radius: var(--radius-md);
        font-weight: 600 !important;
        font-size: 0.9rem !important;
        transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
        box-shadow: 0 2px 10px rgba(255, 90, 31, 0.25);
    }

    .nav-cta:hover {
        background-color: #FF6B36;
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(255, 90, 31, 0.35);
    }

    .nav-cta::after {
        display: none;
    }

    .hamburger-btn {
        display: none;
        background: none;
        border: none;
        color: #FFFFFF;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 8px;
        line-height: 1;
        border-radius: var(--radius-sm);
    }

    .hamburger-btn:hover {
        color: var(--accent-orange);
    }

    /* 移动端抽屉 */
    .mobile-drawer {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100%;
        background-color: #0D0F12;
        z-index: 1200;
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -8px 0 30px rgba(0, 0, 0, 0.5);
        display: flex;
        flex-direction: column;
        padding: 24px 28px;
    }

    .mobile-drawer.open {
        right: 0;
    }

    .drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 40px;
    }

    .drawer-brand {
        font-family: var(--font-display);
        font-weight: 800;
        font-size: 1rem;
        color: #FFFFFF;
    }

    .drawer-close {
        background: none;
        border: none;
        color: rgba(255, 255, 255, 0.7);
        font-size: 1.4rem;
        cursor: pointer;
        padding: 6px;
        line-height: 1;
    }

    .drawer-close:hover {
        color: var(--accent-orange);
    }

    .drawer-menu {
        list-style: none;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .drawer-menu li a {
        display: block;
        color: rgba(255, 255, 255, 0.75);
        font-size: 1.05rem;
        font-weight: 500;
        padding: 14px 12px;
        border-radius: var(--radius-md);
        transition: background 0.25s ease, color 0.25s ease;
    }

    .drawer-menu li a:hover {
        background-color: rgba(255, 90, 31, 0.12);
        color: #FFFFFF;
    }

    .drawer-menu li a.active {
        background-color: rgba(255, 90, 31, 0.15);
        color: var(--accent-orange);
        font-weight: 600;
    }

    .drawer-cta {
        display: block;
        text-align: center;
        background-color: var(--accent-orange);
        color: #FFFFFF;
        font-weight: 600;
        padding: 14px 20px;
        border-radius: var(--radius-md);
        margin-top: 20px;
        transition: background 0.25s ease, transform 0.2s ease;
    }

    .drawer-cta:hover {
        background-color: #FF6B36;
        transform: translateY(-1px);
    }

    .drawer-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.6);
        z-index: 1100;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .drawer-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 100vh;
        display: flex;
        align-items: center;
        background-image: linear-gradient(115deg, rgba(18, 22, 28, 0.92) 30%, rgba(18, 22, 28, 0.65) 70%), url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center center;
        background-repeat: no-repeat;
        padding: 140px 0 80px;
        color: #FFFFFF;
    }

    .hero-inner {
        max-width: 760px;
        position: relative;
        z-index: 2;
    }

    .hero-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background-color: rgba(255, 90, 31, 0.18);
        border: 1px solid rgba(255, 90, 31, 0.35);
        color: #FFB69E;
        font-size: 0.85rem;
        font-weight: 500;
        padding: 6px 16px;
        border-radius: 100px;
        margin-bottom: 28px;
        letter-spacing: 0.02em;
    }

    .hero h1 {
        font-family: var(--font-display);
        font-size: clamp(2.4rem, 5.5vw, 4.2rem);
        font-weight: 800;
        line-height: 1.15;
        letter-spacing: -0.02em;
        margin-bottom: 24px;
        text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    .hero h1 .highlight {
        color: var(--accent-orange);
        position: relative;
    }

    .hero-desc {
        font-size: 1.125rem;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.82);
        max-width: 600px;
        margin-bottom: 40px;
    }

    .hero-actions {
        display: flex;
        align-items: center;
        gap: 24px;
        flex-wrap: wrap;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        font-family: var(--font-main);
        font-size: 0.95rem;
        font-weight: 600;
        padding: 14px 32px;
        border-radius: var(--radius-md);
        border: none;
        cursor: pointer;
        transition: all 0.25s ease;
        text-decoration: none;
    }

    .btn-primary {
        background-color: var(--accent-orange);
        color: #FFFFFF;
        box-shadow: 0 4px 20px rgba(255, 90, 31, 0.3);
    }

    .btn-primary:hover {
        background-color: #FF6B36;
        color: #FFFFFF;
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(255, 90, 31, 0.4);
    }

    .btn-dark {
        background-color: var(--primary-dark);
        color: #FFFFFF;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    }

    .btn-dark:hover {
        background-color: #1F2731;
        color: #FFFFFF;
        transform: translateY(-2px);
    }

    .btn-outline {
        background: transparent;
        border: 1.5px solid rgba(255, 255, 255, 0.35);
        color: #FFFFFF;
    }

    .btn-outline:hover {
        border-color: var(--accent-orange);
        color: var(--accent-orange);
        background-color: rgba(255, 90, 31, 0.06);
        transform: translateY(-2px);
    }

    .btn-large {
        padding: 16px 40px;
        font-size: 1.05rem;
    }

    .hero-trust {
        display: flex;
        gap: 36px;
        margin-top: 56px;
        flex-wrap: wrap;
    }

    .trust-item {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.65);
    }

    .trust-item i {
        color: var(--success-green);
        font-size: 1.1rem;
    }

    .scroll-indicator {
        position: absolute;
        bottom: 32px;
        left: 50%;
        transform: translateX(-50%);
        color: rgba(255, 255, 255, 0.5);
        font-size: 1.2rem;
        animation: bounce-down 2s infinite ease-in-out;
    }

    @keyframes bounce-down {
        0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
        50% { transform: translateX(-50%) translateY(10px); opacity: 1; }
    }

    /* ===== 卖点三连区 ===== */
    .feature-points {
        background-color: var(--bg-warm);
        padding: var(--space-section-desktop) 0;
        border-bottom: 1px solid #E8E5DF;
    }

    .feature-grid {
        display: grid;
        grid-template-columns: 1fr 1.2fr 1fr;
        gap: 40px;
        align-items: stretch;
    }

    .feature-item {
        position: relative;
        padding: 32px 8px 24px;
        transition: background 0.3s ease;
    }

    .feature-item:not(:last-child)::after {
        content: "";
        position: absolute;
        top: 24px;
        right: -20px;
        height: calc(100% - 48px);
        width: 1px;
        background-color: rgba(0, 0, 0, 0.06);
    }

    .feature-number {
        font-family: var(--font-display);
        font-size: 3.2rem;
        font-weight: 800;
        color: var(--accent-orange);
        line-height: 1;
        margin-bottom: 20px;
        letter-spacing: -0.03em;
        display: block;
    }

    .feature-item h2 {
        font-family: var(--font-display);
        font-size: 1.35rem;
        font-weight: 700;
        letter-spacing: -0.01em;
        margin-bottom: 12px;
        color: var(--text-main);
        line-height: 1.3;
    }

    .feature-item p {
        font-size: 0.95rem;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 20px;
    }

    .feature-line {
        width: 48px;
        height: 3px;
        background-color: var(--accent-orange);
        border-radius: 3px;
    }

    /* ===== 场景演示区 ===== */
    .scenario-section {
        background-color: #FFFFFF;
        padding: var(--space-section-desktop) 0;
    }

    .scenario-block {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 64px;
        align-items: center;
        margin-bottom: 96px;
    }

    .scenario-block:last-child {
        margin-bottom: 0;
    }

    .scenario-block.reverse .scenario-media {
        order: 2;
    }

    .scenario-block.reverse .scenario-content {
        order: 1;
    }

    .scenario-media {
        position: relative;
    }

    .scenario-media img {
        width: 100%;
        aspect-ratio: 16/10;
        object-fit: cover;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-card);
    }

    .scenario-tag {
        position: absolute;
        top: 16px;
        left: 16px;
        background-color: var(--accent-orange);
        color: #FFFFFF;
        font-size: 0.8rem;
        font-weight: 600;
        padding: 6px 14px;
        border-radius: 100px;
        box-shadow: 0 2px 8px rgba(255, 90, 31, 0.3);
    }

    .scenario-content h3 {
        font-family: var(--font-display);
        font-size: 1.6rem;
        font-weight: 700;
        line-height: 1.3;
        letter-spacing: -0.01em;
        margin-bottom: 16px;
        color: var(--text-main);
    }

    .scenario-content p {
        color: var(--text-muted);
        font-size: 0.95rem;
        line-height: 1.75;
        margin-bottom: 24px;
    }

    .scenario-list {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .scenario-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        font-size: 0.95rem;
        color: var(--text-main);
        line-height: 1.6;
    }

    .scenario-list li i {
        color: var(--success-green);
        margin-top: 4px;
        font-size: 0.9rem;
    }

    /* ===== 最新资讯 ===== */
    .news-section {
        background-color: var(--bg-warm);
        padding: var(--space-section-desktop) 0;
    }

    .news-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }

    .news-card {
        background-color: #FFFFFF;
        border-radius: var(--radius-md);
        padding: 28px;
        box-shadow: var(--shadow-card);
        transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        border: 1px solid transparent;
        display: flex;
        flex-direction: column;
        min-height: 260px;
    }

    .news-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(255, 90, 31, 0.15);
    }

    .news-card .news-tag {
        display: inline-block;
        background-color: rgba(255, 90, 31, 0.1);
        color: var(--accent-orange);
        font-size: 0.75rem;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: 4px;
        margin-bottom: 14px;
        width: fit-content;
    }

    .news-card .news-tag.green {
        background-color: rgba(14, 138, 94, 0.1);
        color: var(--success-green);
    }

    .news-card .news-tag.yellow {
        background-color: rgba(230, 184, 0, 0.12);
        color: #A88600;
    }

    .news-card h3 {
        font-family: var(--font-display);
        font-size: 1.1rem;
        font-weight: 650;
        line-height: 1.4;
        color: var(--text-main);
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-card p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.65;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 16px;
        flex: 1;
    }

    .news-card .news-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: 1px solid #F0EEE9;
        padding-top: 14px;
    }

    .news-card .news-date {
        font-size: 0.8rem;
        color: #9CA3AF;
    }

    .news-card .news-link {
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--text-main);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: color 0.25s ease, gap 0.25s ease;
    }

    .news-card .news-link:hover {
        color: var(--accent-orange);
        gap: 10px;
    }

    .news-card .news-link i {
        font-size: 0.75rem;
    }

    .empty-news {
        grid-column: 1 / -1;
        background-color: #FFFFFF;
        border-radius: var(--radius-md);
        padding: 60px 32px;
        text-align: center;
        box-shadow: var(--shadow-card);
        border: 2px dashed #E2E0DA;
    }

    .empty-news i {
        font-size: 2.5rem;
        color: #D1D5DB;
        margin-bottom: 16px;
        display: block;
    }

    .empty-news p {
        color: var(--text-muted);
        font-size: 1rem;
    }

    /* ===== 社会认同区 ===== */
    .social-proof {
        background-color: var(--primary-dark);
        color: var(--text-on-dark);
        padding: var(--space-section-desktop) 0;
        position: relative;
        overflow: hidden;
    }

    .social-proof::before {
        content: "";
        position: absolute;
        top: -30%;
        right: -10%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(255, 90, 31, 0.12) 0%, transparent 70%);
        pointer-events: none;
    }

    .proof-heading {
        color: #FFFFFF;
        margin-bottom: 16px;
    }

    .proof-stats {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        margin-bottom: 64px;
    }

    .stat-item {
        text-align: center;
        padding: 32px 16px;
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-md);
        transition: border-color 0.3s ease, background 0.3s ease;
    }

    .stat-item:hover {
        border-color: rgba(255, 90, 31, 0.4);
        background-color: rgba(255, 90, 31, 0.03);
    }

    .stat-number {
        font-family: var(--font-display);
        font-size: 2.5rem;
        font-weight: 800;
        color: var(--accent-orange);
        line-height: 1.2;
        margin-bottom: 8px;
    }

    .stat-label {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.5;
    }

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

    .quote-card {
        background-color: var(--card-dark);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: var(--radius-md);
        padding: 28px;
        transition: transform 0.3s ease, border-color 0.3s ease;
    }

    .quote-card:hover {
        transform: translateY(-3px);
        border-color: rgba(255, 90, 31, 0.2);
    }

    .quote-card .stars {
        color: var(--warning-yellow);
        font-size: 0.85rem;
        margin-bottom: 14px;
        letter-spacing: 4px;
    }

    .quote-card blockquote {
        font-size: 0.92rem;
        line-height: 1.7;
        color: rgba(232, 230, 225, 0.85);
        margin-bottom: 16px;
        border: none;
        padding: 0;
    }

    .quote-card .quote-author {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.5);
    }

    /* ===== FAQ ===== */
    .faq-section {
        background-color: #FFFFFF;
        padding: var(--space-section-desktop) 0;
    }

    .faq-list {
        max-width: 780px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background-color: var(--bg-warm);
        border-radius: var(--radius-md);
        border: 1px solid #ECE9E3;
        overflow: hidden;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .faq-item:hover {
        border-color: rgba(255, 90, 31, 0.25);
    }

    .faq-item.active {
        border-color: rgba(255, 90, 31, 0.4);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 20px 24px;
        cursor: pointer;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-main);
        transition: color 0.2s ease;
        border-left: 3px solid transparent;
    }

    .faq-item.active .faq-question {
        color: var(--accent-orange);
        border-left-color: var(--accent-orange);
    }

    .faq-icon {
        color: var(--text-muted);
        transition: transform 0.35s ease, color 0.3s ease;
        flex-shrink: 0;
        font-size: 1rem;
    }

    .faq-item.active .faq-icon {
        transform: rotate(45deg);
        color: var(--accent-orange);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
    }

    .faq-item.active .faq-answer {
        max-height: 500px;
    }

    .faq-answer-inner {
        padding: 0 24px 20px 24px;
        color: var(--text-muted);
        font-size: 0.93rem;
        line-height: 1.8;
        border-top: 1px solid #E5E1D9;
        padding-top: 16px;
        margin-left: 24px;
        margin-right: 24px;
        padding-left: 0;
        padding-right: 0;
        padding-bottom: 16px;
    }

    /* ===== CTA ===== */
    .cta-section {
        background-image: linear-gradient(120deg, rgba(18, 22, 28, 0.94) 40%, rgba(18, 22, 28, 0.7)), url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        padding: 120px 0;
        text-align: center;
        position: relative;
    }

    .cta-section h2 {
        font-family: var(--font-display);
        font-size: clamp(1.8rem, 3.8vw, 2.8rem);
        font-weight: 800;
        color: #FFFFFF;
        line-height: 1.25;
        margin-bottom: 20px;
        letter-spacing: -0.02em;
    }

    .cta-section p {
        color: rgba(255, 255, 255, 0.75);
        font-size: 1.05rem;
        max-width: 560px;
        margin: 0 auto 40px;
        line-height: 1.75;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background-color: #0E1116;
        color: rgba(255, 255, 255, 0.65);
        padding: 80px 0 28px;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 48px;
        margin-bottom: 56px;
    }

    .footer-brand {
        font-family: var(--font-display);
        font-size: 1.2rem;
        font-weight: 800;
        color: #FFFFFF;
        margin-bottom: 16px;
        letter-spacing: -0.01em;
    }

    .footer-brand span {
        color: var(--accent-orange);
    }

    .footer-desc {
        font-size: 0.9rem;
        line-height: 1.7;
        max-width: 320px;
    }

    .footer-col h4 {
        color: #FFFFFF;
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 20px;
    }

    .footer-col ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .footer-col ul li a {
        color: rgba(255, 255, 255, 0.6);
        font-size: 0.9rem;
        transition: color 0.25s ease, transform 0.25s ease;
        display: inline-block;
    }

    .footer-col ul li a:hover {
        color: var(--accent-orange);
        transform: translateX(4px);
    }

    .footer-contact {
        font-size: 0.9rem;
        line-height: 1.9;
    }

    .footer-contact i {
        width: 20px;
        color: var(--accent-orange);
        margin-right: 4px;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding-top: 28px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.8rem;
    }

    .footer-bottom a {
        color: rgba(255, 255, 255, 0.45);
    }

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

    /* ===== 底部固定转化条 ===== */
    .bottom-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: #0D0F12;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 14px 0;
        z-index: 1050;
        display: flex;
        align-items: center;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    }

    .bottom-bar.hide-bar {
        transform: translateY(110%);
    }

    .bottom-bar .bar-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        width: 100%;
    }

    .bottom-bar .bar-text {
        color: #FFFFFF;
        font-size: 0.95rem;
        font-weight: 500;
    }

    .bottom-bar .bar-actions {
        display: flex;
        align-items: center;
        gap: 14px;
        flex-shrink: 0;
    }

    .bottom-bar .bar-btn {
        background-color: var(--accent-orange);
        color: #FFFFFF;
        border: none;
        padding: 10px 24px;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 0.9rem;
        cursor: pointer;
        transition: background 0.25s ease, transform 0.2s ease;
    }

    .bottom-bar .bar-btn:hover {
        background-color: #FF6B36;
        transform: translateY(-1px);
    }

    .bottom-bar .bar-close {
        background: none;
        border: none;
        color: rgba(255, 255, 255, 0.5);
        font-size: 1.1rem;
        cursor: pointer;
        padding: 6px;
        line-height: 1;
        transition: color 0.25s ease;
    }

    .bottom-bar .bar-close:hover {
        color: var(--accent-orange);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1023px) {
        .container {
            padding: 0 32px;
        }

        .section {
            padding: var(--space-section-tablet) 0;
        }

        .nav-menu {
            gap: 20px;
        }

        .nav-menu li a {
            font-size: 0.88rem;
        }

        .feature-grid {
            gap: 28px;
        }

        .feature-item:not(:last-child)::after {
            right: -14px;
        }

        .scenario-block {
            gap: 40px;
        }

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

        .proof-stats {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

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

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

    @media (max-width: 767px) {
        .container {
            padding: 0 20px;
        }

        .section {
            padding: var(--space-section-mobile) 0;
        }

        .nav-wrap {
            height: 64px;
        }

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

        .nav-menu {
            display: none;
        }

        .hamburger-btn {
            display: block;
        }

        .hero {
            min-height: 90vh;
            padding: 100px 0 60px;
        }

        .hero h1 {
            font-size: clamp(1.9rem, 7vw, 2.5rem);
        }

        .hero-desc {
            font-size: 1rem;
        }

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

        .hero-trust {
            gap: 16px;
            justify-content: center;
        }

        .trust-item {
            font-size: 0.8rem;
        }

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

        .feature-item {
            padding: 16px 0;
        }

        .feature-item:not(:last-child)::after {
            display: none;
        }

        .feature-number {
            font-size: 2.4rem;
            margin-bottom: 12px;
        }

        .scenario-block {
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 64px;
        }

        .scenario-block.reverse .scenario-media {
            order: 1;
        }

        .scenario-block.reverse .scenario-content {
            order: 2;
        }

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

        .proof-stats {
            grid-template-columns: 1fr;
        }

        .proof-quotes {
            grid-template-columns: 1fr;
        }

        .stat-number {
            font-size: 2rem;
        }

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

        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }

        .bottom-bar .bar-text {
            font-size: 0.82rem;
        }

        .bottom-bar .bar-btn {
            padding: 8px 16px;
            font-size: 0.82rem;
            white-space: nowrap;
        }

        .bottom-bar .bar-actions {
            gap: 8px;
        }

        .section-heading {
            font-size: 1.4rem;
        }

        .section-sub {
            font-size: 0.9rem;
        }
    }

    @media (max-width: 420px) {
        .bottom-bar .bar-text {
            display: none;
        }

        .bottom-bar .bar-actions {
            width: 100%;
            justify-content: space-between;
        }
    }

/* roulang page: category1 */
:root {
  --primary-dark: #12161C;
  --primary-darker: #0C0F14;
  --primary-card: #1D242D;
  --accent: #FF5A1F;
  --accent-light: rgba(255, 90, 31, 0.12);
  --accent-glow: rgba(255, 90, 31, 0.28);
  --bg-warm: #F5F4F0;
  --bg-white: #FFFFFF;
  --bg-gray: #EDECE7;
  --text-main: #2A2E34;
  --text-muted: #6B7280;
  --text-invert: #E8E6E1;
  --border-light: #E2E0DB;
  --border-dark: rgba(255, 255, 255, 0.08);
  --success: #0E8A5E;
  --warning: #E6B800;
  --radius-md: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.10);
  --transition-base: all 0.25s ease;
  --container-lg: 1200px;
  --space-section-lg: 110px;
  --space-section-md: 72px;
  --space-section-sm: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans SC", "HarmonyOS Sans SC", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-warm);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: #E64A12;
}

ul, ol {
  list-style: none;
}

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

input, textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(18, 22, 28, 0.98);
  transition: var(--transition-base);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header.scrolled {
  background: rgba(18, 22, 28, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(255, 90, 31, 0.20);
}

.site-header .container {
  height: 76px;
  display: flex;
  align-items: center;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-invert);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  white-space: nowrap;
  line-height: 1.2;
}

.brand-logo .logo-highlight {
  color: var(--accent);
  margin-left: 4px;
}

.desktop-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
}

.nav-menu > li {
  margin: 0;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  color: rgba(232, 230, 225, 0.85);
  font-size: 0.925rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  position: relative;
  letter-spacing: 0.01em;
}

.nav-menu a:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

.nav-menu a.active {
  color: #FFFFFF;
  background: rgba(255, 90, 31, 0.15);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-menu a.nav-cta {
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 600;
  padding: 8px 22px;
  margin-left: 10px;
  box-shadow: 0 2px 10px rgba(255, 90, 31, 0.25);
}

.nav-menu a.nav-cta:hover {
  background: #FF6B37;
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(255, 90, 31, 0.35);
}

.hamburger-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--text-invert);
  padding: 8px;
  border-radius: var(--radius-sm);
}

/* 抽屉导航 */
.drawer-nav {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: #0C0F14;
  z-index: 2000;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  box-shadow: -8px 0 40px rgba(0, 0, 0, 0.5);
}

.drawer-nav.open {
  right: 0;
}

.drawer-nav-header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 16px;
}

.drawer-nav-header .drawer-close {
  color: var(--text-invert);
  font-size: 1.4rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.drawer-nav-header .drawer-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

.drawer-nav ul li {
  margin-bottom: 4px;
}

.drawer-nav ul li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  color: rgba(232, 230, 225, 0.9);
  font-size: 1.05rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.drawer-nav ul li a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

.drawer-nav ul li a.active {
  background: rgba(255, 90, 31, 0.18);
  color: var(--accent);
}

.drawer-nav .drawer-cta {
  margin-top: 24px;
  background: var(--accent);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.drawer-nav .drawer-cta:hover {
  background: #FF6B37;
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

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

/* ===== Category Hero ===== */
.cat-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  background-color: var(--primary-dark);
  background-image: linear-gradient(90deg, rgba(18, 22, 28, 0.92) 0%, rgba(18, 22, 28, 0.75) 45%, rgba(18, 22, 28, 0.4) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
  color: var(--text-invert);
  overflow: hidden;
}

.cat-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-warm), transparent);
  pointer-events: none;
}

.cat-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 90, 31, 0.15);
  border: 1px solid rgba(255, 90, 31, 0.3);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.cat-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  color: #FFFFFF;
}

.cat-hero h1 .text-accent {
  color: var(--accent);
  position: relative;
}

.cat-hero .hero-lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: rgba(232, 230, 225, 0.85);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.cat-hero .hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  box-shadow: 0 4px 14px rgba(255, 90, 31, 0.3);
}

.btn-primary:hover {
  background: #FF6B37;
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 90, 31, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-invert);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition-base);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: #FFFFFF;
}

.cat-hero .hero-stats {
  position: absolute;
  bottom: 50px;
  right: 60px;
  display: flex;
  gap: 36px;
}

.cat-hero .hero-stats .stat-item {
  text-align: right;
}

.cat-hero .hero-stats .stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
}

.cat-hero .hero-stats .stat-label {
  font-size: 0.78rem;
  color: rgba(232, 230, 225, 0.6);
  letter-spacing: 0.06em;
}

/* ===== Section Base ===== */
.section {
  padding: var(--space-section-md) 0;
}

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

.section-header {
  margin-bottom: 48px;
}

.section-header .section-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-header .section-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 640px;
  line-height: 1.7;
}

.section-header.text-light h2 {
  color: #FFFFFF;
}

.section-header.text-light .section-sub {
  color: rgba(232, 230, 225, 0.7);
}

/* ===== 内容区块 1：四步流程 ===== */
.guide-steps-section {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 20px;
}

.step-item {
  position: relative;
  padding: 36px 28px 28px;
  background: var(--bg-warm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 90, 31, 0.3);
}

.step-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  display: block;
  opacity: 0.9;
}

.step-item h3 {
  font-size: 1.1rem;
  font-weight: 650;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.step-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 内容区块 2：环境准备 ===== */
.pre-check-section {
  background: var(--primary-dark);
  color: var(--text-invert);
  position: relative;
  overflow: hidden;
}

.pre-check-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 90, 31, 0.12) 0%, transparent 70%);
}

.checklist-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.checklist-content {
  padding: 40px;
  background: var(--primary-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
}

.check-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.check-item:last-child {
  border-bottom: none;
}

.check-item .check-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 90, 31, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}

.check-item .check-text h4 {
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.check-item .check-text p {
  color: rgba(232, 230, 225, 0.65);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0;
}

.check-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.check-visual img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.check-visual .visual-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(18, 22, 28, 0.85);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.check-visual .visual-tag i {
  color: var(--accent);
}

/* ===== 内容区块 3：入口场景 / 内容卡片 ===== */
.scene-cards-section {
  background: var(--bg-warm);
}

.scene-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.scene-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(18, 22, 28, 0.4), transparent 60%);
}

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

.card-label {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: var(--accent);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-body h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--primary-dark);
  line-height: 1.4;
  margin-bottom: 10px;
}

.card-body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}

.card-footer .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.card-footer .card-link:hover {
  color: #E64A12;
  gap: 10px;
}

.card-footer .card-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== 内容区块 4：浏览器兼容速查 ===== */
.browser-section {
  background: var(--bg-white);
}

.browser-table-wrap {
  background: var(--bg-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 12px;
}

.browser-table {
  width: 100%;
  border-collapse: collapse;
}

.browser-table th {
  background: var(--primary-dark);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 14px 20px;
  text-align: left;
  letter-spacing: 0.03em;
}

.browser-table td {
  padding: 14px 20px;
  font-size: 0.875rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-light);
  line-height: 1.6;
}

.browser-table tr:last-child td {
  border-bottom: none;
}

.browser-table tr:hover td {
  background: rgba(255, 90, 31, 0.04);
}

.browser-state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}

.browser-state .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.browser-state .dot.dot-success {
  background: var(--success);
}

.browser-state .dot.dot-warning {
  background: var(--warning);
}

.browser-state .dot.dot-accent {
  background: var(--accent);
}

.browser-note {
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 18px;
  background: var(--accent-light);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--text-main);
  line-height: 1.7;
}

.browser-note i {
  color: var(--accent);
  margin-top: 2px;
}

/* ===== 图文对照区块 ===== */
.visual-guide-section {
  background: var(--bg-warm);
}

.visual-rows {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.visual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.visual-row.row-reverse .visual-info {
  order: 2;
}

.visual-row.row-reverse .visual-media {
  order: 1;
}

.visual-media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.visual-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.visual-media .media-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(18, 22, 28, 0.85);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  backdrop-filter: blur(8px);
}

.visual-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 14px;
  line-height: 1.35;
}

.visual-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.visual-info ul li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.88rem;
  color: var(--text-main);
  padding: 5px 0;
  line-height: 1.7;
}

.visual-info ul li i {
  color: var(--accent);
  margin-top: 5px;
  font-size: 0.75rem;
}

/* ===== FAQ 区 ===== */
.faq-section {
  background: var(--primary-dark);
  color: var(--text-invert);
}

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--primary-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(255, 90, 31, 0.3);
}

.faq-item.open {
  border-color: rgba(255, 90, 31, 0.4);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #FFFFFF;
  background: transparent;
  transition: var(--transition-base);
  border-left: 3px solid transparent;
  text-align: left;
}

.faq-item:hover .faq-question {
  border-left-color: var(--accent);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 90, 31, 0.15);
  color: var(--accent);
  font-size: 0.8rem;
  transition: var(--transition-base);
  margin-left: 16px;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  color: rgba(232, 230, 225, 0.75);
  font-size: 0.875rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  padding: 0 24px 22px;
  max-height: 400px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-item.open .faq-answer-inner {
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  background-color: var(--primary-darker);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 96px 0;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(18, 22, 28, 0.92) 0%, rgba(18, 22, 28, 0.78) 100%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.cta-inner p {
  color: rgba(232, 230, 225, 0.8);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.cta-inner .cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-inner .btn-primary {
  padding: 14px 36px;
  font-size: 1rem;
}

/* ===== 固定底部转化条 ===== */
.fixed-convert-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 1200;
  background: var(--primary-darker);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 -6px 30px rgba(0, 0, 0, 0.3);
  transition: transform 0.4s ease;
}

.fixed-convert-bar.hidden {
  transform: translateY(100%);
}

.convert-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 14px 20px;
  position: relative;
}

.convert-bar-inner .bar-text {
  color: var(--text-invert);
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0;
}

.convert-bar-inner .bar-text span {
  color: var(--accent);
  font-weight: 700;
}

.convert-bar-inner .bar-btn {
  background: var(--accent);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 22px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.convert-bar-inner .bar-btn:hover {
  background: #FF6B37;
}

.bar-close {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(232, 230, 225, 0.5);
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.bar-close:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.1);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-darker);
  color: rgba(232, 230, 225, 0.7);
  padding: 64px 0 0;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 90, 31, 0.3), transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.footer-brand span {
  color: var(--accent);
  margin-left: 4px;
  font-weight: 700;
}

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(232, 230, 225, 0.6);
  max-width: 300px;
  margin-bottom: 0;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.03em;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: rgba(232, 230, 225, 0.6);
  font-size: 0.875rem;
  padding: 2px 0;
  display: inline-block;
  transition: var(--transition-base);
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact div {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(232, 230, 225, 0.6);
  padding: 6px 0;
}

.footer-contact div i {
  color: var(--accent);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom span {
  font-size: 0.8rem;
  color: rgba(232, 230, 225, 0.4);
}

/* ===== Focus visible ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ===== Responsive ===== */
@media screen and (max-width: 1023px) {
  .desktop-nav {
    display: none;
  }

  .hamburger-btn {
    display: block;
  }

  .section {
    padding: var(--space-section-md) 0;
  }

  .footer-top {
    grid-template-columns: 1fr 0.7fr 0.7fr 1fr;
    gap: 28px;
  }

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

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

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

  .cat-hero .hero-stats {
    display: none;
  }

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

  .visual-row.row-reverse .visual-info {
    order: 1;
  }

  .visual-row.row-reverse .visual-media {
    order: 2;
  }
}

@media screen and (max-width: 767px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: var(--space-section-sm) 0;
  }

  .brand-logo {
    font-size: 1.05rem;
  }

  .site-header .container {
    height: 64px;
  }

  .cat-hero {
    padding: 110px 0 60px;
    min-height: 360px;
  }

  .cat-hero h1 {
    font-size: 1.8rem;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    justify-content: center;
  }

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

  .step-item {
    padding: 24px 20px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding: 20px 0;
  }

  .calculate-grid,
  .visual-rows {
    gap: 24px;
  }

  .browser-table {
    font-size: 0.8rem;
  }

  .browser-table th,
  .browser-table td {
    padding: 10px 12px;
  }

  .browser-state {
    font-size: 0.75rem;
  }

  .convert-bar-inner {
    padding: 10px 40px 10px 16px;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .convert-bar-inner .bar-text {
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .convert-bar-inner .bar-btn {
    padding: 7px 14px;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .cta-section {
    padding: 60px 0;
  }

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

  .cta-inner .cta-actions a {
    width: 100%;
    justify-content: center;
  }
}

@media screen and (max-width: 639px) {
  .browser-table th:nth-child(2),
  .browser-table td:nth-child(2) {
    display: none;
  }

  .cat-hero .hero-lead {
    font-size: 0.9rem;
  }

  .checklist-content {
    padding: 24px;
  }

  .visual-media img {
    height: 200px;
  }
}

/* ===== Reveal animation ===== */
.fade-in-initial {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* roulang page: article */
:root {
            --primary: #12161C;
            --primary-light: #1D242D;
            --accent: #FF5A1F;
            --accent-light: rgba(255, 90, 31, 0.12);
            --accent-hover: #ff6d3d;
            --bg: #F5F4F0;
            --card-bg: #FFFFFF;
            --text: #2A2E34;
            --text-light: #6B7280;
            --text-dark: #E8E6E1;
            --border: #D1D5DB;
            --radius: 8px;
            --radius-sm: 4px;
            --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-top: 72px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        .container.container-narrow {
            max-width: 760px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: var(--primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(18, 22, 28, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }

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

        .brand-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            line-height: 1.2;
        }

        .brand-logo .logo-highlight {
            color: var(--accent);
        }

        .desktop-nav .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .desktop-nav .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.9375rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .desktop-nav .nav-menu li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .desktop-nav .nav-menu li a.active {
            color: #fff;
            background: rgba(255, 90, 31, 0.15);
            font-weight: 600;
        }

        .desktop-nav .nav-menu li a.nav-cta {
            margin-left: 8px;
            padding: 10px 22px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
        }

        .desktop-nav .nav-menu li a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 90, 31, 0.3);
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.2);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.25rem;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

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

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: #0d1117;
            z-index: 300;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.3);
        }

        .mobile-drawer.open {
            right: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .drawer-brand {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .drawer-close {
            background: none;
            border: none;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.4rem;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .drawer-close:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .drawer-nav {
            flex: 1;
            padding: 12px 0;
            overflow-y: auto;
        }

        .drawer-nav li a {
            display: block;
            padding: 14px 24px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            font-weight: 500;
            border-left: 3px solid transparent;
            transition: var(--transition);
        }

        .drawer-nav li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            border-left-color: var(--accent);
        }

        .drawer-nav li a.active {
            color: #fff;
            background: rgba(255, 90, 31, 0.12);
            border-left-color: var(--accent);
        }

        .drawer-footer {
            padding: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .drawer-footer .btn-primary {
            width: 100%;
            justify-content: center;
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 250;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius);
            font-size: 0.9375rem;
            font-weight: 650;
            line-height: 1;
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 90, 31, 0.3);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 26px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius);
            font-size: 0.9375rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: rgba(255, 90, 31, 0.1);
            border-color: var(--accent);
            color: #fff;
        }

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

        .article-main {
            background: var(--bg);
        }

        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid #e8e8e3;
            padding: 16px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--text-light);
            gap: 8px;
        }

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

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

        .breadcrumb .sep {
            color: #d0d0ca;
            font-size: 0.8rem;
        }

        .breadcrumb .current {
            color: var(--text);
            max-width: 420px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-section {
            padding: 48px 0 64px;
        }

        .article-section .article-header {
            text-align: left;
            margin-bottom: 32px;
        }

        .article-title {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.875rem;
            color: var(--text-light);
            padding-bottom: 20px;
            border-bottom: 1px solid #e8e8e3;
        }

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

        .article-meta .meta-tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 20px;
            font-size: 0.8125rem;
            font-weight: 600;
        }

        .article-content {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: var(--text);
        }

        .article-content p {
            margin-bottom: 1.4em;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin: 2em 0 0.8em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--accent);
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 650;
            color: var(--primary);
            margin: 1.8em 0 0.6em;
        }

        .article-content ul {
            list-style: disc;
            padding-left: 1.5em;
            margin-bottom: 1.4em;
        }

        .article-content ol {
            list-style: decimal;
            padding-left: 1.5em;
            margin-bottom: 1.4em;
        }

        .article-content li {
            margin-bottom: 0.4em;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-light);
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.6em 0;
            color: var(--text);
            font-style: normal;
        }

        .article-content blockquote p {
            margin-bottom: 0;
        }

        .article-content pre {
            background: var(--primary);
            color: var(--text-dark);
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.6em 0;
            font-size: 0.9375rem;
            line-height: 1.6;
        }

        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-family: "SF Mono", "Fira Code", "Consolas", monospace;
        }

        .article-content code {
            background: #f0f0ee;
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-family: "SF Mono", "Fira Code", "Consolas", monospace;
            font-size: 0.9em;
        }

        .article-content img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 1.6em auto;
        }

        .article-content a {
            color: var(--accent);
            border-bottom: 1px solid transparent;
        }

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 0.9375rem;
        }

        .article-content table th {
            background: var(--primary);
            color: #fff;
            text-align: left;
            padding: 10px 16px;
        }

        .article-content table td {
            padding: 10px 16px;
            border-bottom: 1px solid #e8e8e3;
        }

        .article-content table tr:hover td {
            background: #fafaf8;
        }

        .article-not-found {
            text-align: center;
            padding: 64px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .article-not-found i {
            font-size: 3rem;
            color: #d0d0ca;
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

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

        .related-section {
            padding: 72px 0;
            background: #fff;
            border-top: 1px solid #e8e8e3;
        }

        .related-section .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 40px;
            letter-spacing: -0.01em;
        }

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

        .related-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid transparent;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 90, 31, 0.3);
        }

        .related-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

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

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

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 3px 12px;
            background: var(--accent);
            color: #fff;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

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

        .related-card .card-title {
            font-size: 1.0625rem;
            font-weight: 650;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .related-card .card-desc {
            font-size: 0.875rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-card .card-link:hover {
            gap: 10px;
        }

        .related-footer {
            text-align: center;
            margin-top: 40px;
        }

        .related-footer a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 10px 24px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
        }

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

        .faq-section {
            padding: 72px 0;
            background: var(--bg);
        }

        .faq-section .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .faq-section .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 0.9375rem;
            margin-bottom: 40px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-item.active {
            border-left: 3px solid var(--accent);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question:focus {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }

        .faq-icon {
            font-size: 1.25rem;
            color: var(--text-light);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.9375rem;
            color: var(--text-light);
            line-height: 1.7;
            border-top: 1px solid #f0f0ee;
            padding-top: 14px;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        .cta-section {
            padding: 80px 0;
            position: relative;
            background: linear-gradient(rgba(18, 22, 28, 0.88), rgba(18, 22, 28, 0.92)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-primary {
            padding: 14px 36px;
            font-size: 1rem;
        }

        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand {
            font-size: 1.375rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .site-footer ul li {
            margin-bottom: 8px;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.875rem;
            transition: var(--transition);
        }

        .site-footer ul li a:hover {
            color: var(--accent);
        }

        .footer-contact div {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1023.98px) {
            .desktop-nav {
                display: none;
            }

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

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

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

        @media (max-width: 639.98px) {
            body {
                padding-top: 64px;
            }

            .nav-wrap {
                height: 64px;
            }

            .brand-logo {
                font-size: 1.0625rem;
            }

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

            .article-section {
                padding: 32px 0 48px;
            }

            .related-section,
            .faq-section {
                padding: 48px 0;
            }

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

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

            .article-meta {
                gap: 12px;
                flex-wrap: wrap;
            }

            .article-title {
                font-size: 1.5rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --color-dark: #12161C;
            --color-dark-card: #1D242D;
            --color-primary: #FF5A1F;
            --color-primary-light: rgba(255, 90, 31, 0.1);
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-text: #2A2E34;
            --color-text-light: #6B7280;
            --color-text-dark-bg: #E8E6E1;
            --color-success: #0E8A5E;
            --color-warning: #E6B800;
            --color-border: #E5E7EB;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --transition-base: all 0.3s ease;
            --container-width: 1200px;
            --space-section-lg: 100px;
            --space-section-md: 72px;
            --space-section-sm: 48px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'HarmonyOS Sans', system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition-base); }
        ul, ol { list-style: none; }
        button { background: none; border: none; cursor: pointer; font-family: inherit; }
        input, textarea { font-family: inherit; }

        .container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; width: 100%; }
        .section { padding: var(--space-section-lg) 0; }
        .section-tight { padding: var(--space-section-md) 0; }
        .section-alt { background: var(--color-surface); }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(18, 22, 28, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(18, 22, 28, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            font-size: 1.25rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .brand-logo .logo-highlight { color: var(--color-primary); }
        .desktop-nav .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0;
        }
        .desktop-nav .nav-menu li a {
            color: #B0B5BD;
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
        }
        .desktop-nav .nav-menu li a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-base);
        }
        .desktop-nav .nav-menu li a:hover { color: #FFFFFF; }
        .desktop-nav .nav-menu li a:hover::after { width: 100%; }
        .desktop-nav .nav-menu li a.active { color: #FFFFFF; }
        .desktop-nav .nav-menu li a.active::after { width: 100%; }
        .desktop-nav .nav-menu li a.nav-cta {
            background: var(--color-primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition-base), transform var(--transition-base);
        }
        .desktop-nav .nav-menu li a.nav-cta:hover {
            background: #FF6B3A;
            transform: translateY(-1px);
        }
        .desktop-nav .nav-menu li a.nav-cta::after { display: none; }
        .hamburger-btn {
            display: none;
            font-size: 1.5rem;
            color: #FFFFFF;
            padding: 8px;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(18, 22, 28, 0.92), rgba(18, 22, 28, 0.72)), url('/assets/images/backpic/back-1.png') center center / cover;
            padding: 160px 0 100px;
            color: #FFFFFF;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 0.8125rem;
            color: #D0D4DA;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
        }
        .hero-badge i { color: var(--color-primary); font-size: 0.75rem; }
        .hero-section h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.12;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
            max-width: 720px;
        }
        .hero-section h1 .highlight { color: var(--color-primary); }
        .hero-section .hero-subtitle {
            font-size: clamp(1rem, 1.6vw, 1.25rem);
            line-height: 1.8;
            color: #C7CBD1;
            max-width: 560px;
            margin-bottom: 36px;
        }
        .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .btn-primary:hover {
            background: #FF6B3A;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 90, 31, 0.3);
            color: #FFFFFF;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 500;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #FFFFFF;
        }
        .hero-meta {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.875rem;
            color: #A5ABB3;
        }
        .hero-meta-item i { color: var(--color-primary); }

        /* ===== 指标统计区 ===== */
        .metrics-section {
            background: var(--color-surface);
            padding: 64px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .metric-item {
            text-align: center;
            padding: 24px 16px;
        }
        .metric-number {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: var(--color-text);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .metric-number span { color: var(--color-primary); }
        .metric-label {
            font-size: 0.875rem;
            color: var(--color-text-light);
            margin-top: 8px;
        }

        /* ===== 板块标题 ===== */
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 560px;
            line-height: 1.7;
        }
        .section-head { margin-bottom: 48px; }

        /* ===== 评测维度区（对齐清单） ===== */
        .dimension-section {
            background: var(--color-bg);
        }
        .dimension-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .dimension-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
        }
        .dimension-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(255, 90, 31, 0.3);
        }
        .dimension-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 1.375rem;
            font-weight: 800;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .dimension-content { flex: 1; }
        .dimension-content h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .dimension-content p {
            font-size: 0.9375rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .dimension-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
        }
        .dimension-link:hover { gap: 10px; color: var(--color-primary); }
        .dimension-tag {
            display: inline-block;
            background: rgba(14, 138, 94, 0.1);
            color: var(--color-success);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 100px;
            margin-bottom: 10px;
        }

        /* ===== 评测场景 / 内容入口 ===== */
        .scenario-section { background: var(--color-surface); }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background-color: var(--color-dark-card);
        }
        .scenario-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scenario-card:hover .scenario-card-image img { transform: scale(1.03); }
        .scenario-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(18, 22, 28, 0.35), transparent 40%);
            pointer-events: none;
        }
        .scenario-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: var(--color-primary);
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            letter-spacing: 0.02em;
        }
        .scenario-badge.green { background: var(--color-success); }
        .scenario-badge.warning { background: var(--color-warning); color: #1A1A1A; }
        .scenario-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-card-body h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .scenario-card-body p {
            font-size: 0.875rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .scenario-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
            font-size: 0.8125rem;
            color: var(--color-text-light);
        }
        .scenario-link {
            color: var(--color-primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base);
        }
        .scenario-link:hover { gap: 10px; }

        /* ===== 用户反馈 ===== */
        .feedback-section {
            background: var(--color-dark);
            color: var(--color-text-dark-bg);
        }
        .feedback-section .section-title { color: #FFFFFF; }
        .feedback-section .section-subtitle { color: #A5ABB3; }
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feedback-card {
            background: var(--color-dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: border-color var(--transition-base), transform var(--transition-base);
        }
        .feedback-card:hover {
            border-color: rgba(255, 90, 31, 0.4);
            transform: translateY(-2px);
        }
        .feedback-stars { color: var(--color-warning); font-size: 0.875rem; margin-bottom: 16px; letter-spacing: 2px; }
        .feedback-text {
            font-size: 0.9375rem;
            line-height: 1.8;
            color: #D0D4DA;
            margin-bottom: 20px;
        }
        .feedback-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .feedback-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.875rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .feedback-name { font-size: 0.875rem; font-weight: 600; color: #FFFFFF; }
        .feedback-role { font-size: 0.75rem; color: #8A919B; }

        /* ===== FAQ 手风琴 ===== */
        .faq-section { background: var(--color-bg); }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(255, 90, 31, 0.2);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: transparent;
            transition: color var(--transition-base);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.875rem;
            transition: transform 0.3s ease;
            margin-left: 16px;
        }
        .faq-question.open .faq-icon { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 28px;
            font-size: 0.9375rem;
            line-height: 1.8;
            color: var(--color-text-light);
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0 28px 24px;
        }

        /* ===== 最终 CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(18, 22, 28, 0.94), rgba(18, 22, 28, 0.82)), url('/assets/images/backpic/back-2.webp') center center / cover;
            padding: 90px 0;
            color: #FFFFFF;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            color: #C7CBD1;
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0D0F13;
            color: #8A919B;
            padding: 72px 0 32px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
        }
        .footer-brand span { color: var(--color-primary); }
        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            color: #6E757E;
        }
        .footer-col h4 {
            color: #FFFFFF;
            font-size: 0.9375rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            font-size: 0.875rem;
            color: #8A919B;
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover { color: var(--color-primary); }
        .footer-contact div {
            font-size: 0.875rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #8A919B;
        }
        .footer-contact i { color: var(--color-primary); width: 16px; text-align: center; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8125rem;
            color: #6E757E;
        }

        /* ===== 焦点可访问性 ===== */
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1023px) {
            .hero-section { min-height: 80vh; padding: 140px 0 80px; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .scenario-grid { grid-template-columns: repeat(2, 1fr); }
            .feedback-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media screen and (max-width: 639px) {
            .section { padding: var(--space-section-sm) 0; }
            .container { padding: 0 20px; }
            .desktop-nav { display: none; }
            .hamburger-btn { display: block; }
            .hero-section { min-height: 90vh; padding: 120px 0 64px; }
            .hero-section h1 { font-size: clamp(2rem, 9vw, 2.6rem); }
            .hero-meta { gap: 16px; flex-direction: column; }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
            .metrics-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .metric-item { padding: 16px 8px; }
            .dimension-item { flex-direction: column; gap: 16px; padding: 20px; }
            .scenario-grid { grid-template-columns: 1fr; gap: 20px; }
            .feedback-grid { grid-template-columns: 1fr; }
            .faq-question { padding: 18px 20px; font-size: 0.9375rem; }
            .faq-answer { padding: 0 20px; }
            .faq-answer.open { padding: 0 20px 20px; }
            .cta-section { padding: 60px 0; }
            .footer-top { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media screen and (max-width: 520px) {
            .scenario-grid { grid-template-columns: 1fr; }
            .metrics-grid { grid-template-columns: 1fr 1fr; }
        }

/* roulang page: category2 */
:root {
            --primary: #12161C;
            --accent: #FF5A1F;
            --accent-soft: rgba(255, 90, 31, 0.10);
            --bg: #F5F4F0;
            --bg-deep: #1D242D;
            --success: #0E8A5E;
            --warning: #E6B800;
            --text: #2A2E34;
            --text-weak: #6B7280;
            --text-on-dark: #E8E6E1;
            --border: #E3E1DB;
            --white: #ffffff;
            --radius: 8px;
            --radius-sm: 4px;
            --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.10);
            --container: 1200px;
            --space-section: 96px;
            --space-section-tablet: 72px;
            --space-section-mobile: 48px;
        }

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

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

        body {
            font-family: "Noto Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(18, 22, 28, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.header-scrolled {
            background: rgba(18, 22, 28, 0.88);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            position: relative;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: -0.01em;
            white-space: nowrap;
            gap: 2px;
        }

        .brand-logo .logo-highlight {
            color: var(--accent);
            font-weight: 800;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }

        .nav-menu li {
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(232, 230, 225, 0.88);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: var(--radius);
            transition: color .25s ease, background .25s ease, transform .2s ease;
            line-height: 1.4;
        }

        .nav-menu li a:hover {
            color: var(--accent);
            background: rgba(255, 90, 31, 0.08);
        }

        .nav-menu li a.active {
            color: var(--accent);
            font-weight: 650;
            position: relative;
        }

        .nav-menu li a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-menu li a.nav-cta {
            background: var(--accent);
            color: #fff;
            font-weight: 650;
            padding: 10px 20px;
            margin-left: 8px;
            border-radius: var(--radius);
            box-shadow: 0 2px 8px rgba(255, 90, 31, 0.3);
            transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
        }

        .nav-menu li a.nav-cta:hover {
            background: #ff6d3f;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(255, 90, 31, 0.35);
            color: #fff;
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--white);
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background .2s ease, border-color .2s ease;
        }

        .hamburger-btn:hover {
            background: rgba(255, 90, 31, 0.15);
            border-color: var(--accent);
        }

        .mobile-nav-head {
            display: none;
        }

        .mobile-nav-close {
            display: none;
        }

        /* Page Hero */
        .entry-hero {
            position: relative;
            background: var(--primary) url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            min-height: 78vh;
            display: flex;
            align-items: center;
            padding: 160px 0 100px;
            isolation: isolate;
        }

        .entry-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(18, 22, 28, 0.94) 0%, rgba(18, 22, 28, 0.78) 55%, rgba(18, 22, 28, 0.45) 100%);
            z-index: -1;
        }

        .entry-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(18, 22, 28, 0.75) 0%, transparent 45%);
            z-index: -1;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 90, 31, 0.16);
            border: 1px solid rgba(255, 90, 31, 0.45);
            color: #ff9a74;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 22px;
            text-transform: uppercase;
        }

        .entry-hero h1 {
            color: #ffffff;
            font-size: clamp(2.5rem, 5.6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.12;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 720px;
            position: relative;
            padding-left: 20px;
        }

        .entry-hero h1::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;
            width: 4px;
            background: var(--accent);
            border-radius: 4px;
        }

        .entry-hero .hero-sub {
            color: rgba(232, 230, 225, 0.86);
            font-size: 1.12rem;
            line-height: 1.85;
            max-width: 640px;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 650;
            padding: 14px 32px;
            border-radius: var(--radius);
            border: 2px solid transparent;
            cursor: pointer;
            transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
            box-shadow: 0 4px 16px rgba(255, 90, 31, 0.3);
            line-height: 1.4;
        }

        .btn-primary:hover {
            background: #ff6d3f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 90, 31, 0.4);
            color: #fff;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(232, 230, 225, 0.88);
            font-size: 1rem;
            font-weight: 500;
            padding: 12px 8px;
            border-bottom: 2px solid transparent;
            transition: color .25s ease, border-color .25s ease;
            line-height: 1.4;
        }

        .btn-link i {
            font-size: 0.85rem;
            transition: transform .25s ease;
        }

        .btn-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .btn-link:hover i {
            transform: translateX(4px);
        }

        /* Ticker Bar */
        .ticker-bar {
            background: var(--primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
            position: relative;
        }

        .ticker-inner {
            display: flex;
            align-items: center;
            gap: 36px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .ticker-inner::-webkit-scrollbar {
            display: none;
        }

        .ticker-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(232, 230, 225, 0.78);
            font-size: 0.86rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .ticker-item i {
            color: var(--accent);
            font-size: 0.78rem;
        }

        .ticker-item strong {
            color: var(--white);
            font-weight: 650;
        }

        /* Section common */
        .section-block {
            padding: var(--space-section) 0;
        }

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

        .section-block.deep-bg {
            background: var(--primary);
            color: var(--text-on-dark);
        }

        .section-head {
            margin-bottom: 48px;
            max-width: 760px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-eyebrow::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            display: inline-block;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 750;
            line-height: 1.25;
            letter-spacing: -0.015em;
            color: var(--text);
        }

        .deep-bg .section-title {
            color: var(--white);
        }

        .section-desc {
            margin-top: 14px;
            color: var(--text-weak);
            font-size: 1rem;
            line-height: 1.8;
        }

        .deep-bg .section-desc {
            color: rgba(232, 230, 225, 0.65);
        }

        /* Core points */
        .core-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr 1fr;
            gap: 28px;
        }

        .core-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 30px;
            box-shadow: var(--shadow);
            border: 1px solid transparent;
            border-bottom: 3px solid var(--accent);
            transition: box-shadow .3s ease, transform .3s ease;
            position: relative;
        }

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

        .core-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            letter-spacing: -0.04em;
            margin-bottom: 18px;
            display: block;
            font-family: "Inter", system-ui, sans-serif;
        }

        .core-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .core-card p {
            font-size: 0.94rem;
            color: var(--text-weak);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .core-card::after {
            content: "";
            position: absolute;
            left: 30px;
            right: 30px;
            bottom: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .core-card:hover::after {
            opacity: 1;
        }

        /* Editorial blocks */
        .editorial-block {
            padding: var(--space-section) 0;
        }

        .editorial-block.offset-bg {
            background: var(--white);
        }

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

        .editorial-block.reverse .editorial-grid {
            direction: rtl;
        }

        .editorial-block.reverse .editorial-grid>* {
            direction: ltr;
        }

        .editorial-media {
            position: relative;
        }

        .editorial-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
        }

        .editorial-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            padding: 6px 14px;
            border-radius: 999px;
            text-transform: uppercase;
            z-index: 2;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
        }

        .editorial-content {
            max-width: 520px;
        }

        .editorial-content h3 {
            font-size: 1.5rem;
            font-weight: 750;
            line-height: 1.35;
            letter-spacing: -0.015em;
            margin-bottom: 18px;
            color: var(--text);
            position: relative;
            padding-bottom: 16px;
        }

        .editorial-content h3::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        .editorial-content p {
            color: var(--text-weak);
            font-size: 0.97rem;
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .editorial-content p strong {
            color: var(--text);
            font-weight: 650;
        }

        .editorial-list {
            margin-top: 10px;
        }

        .editorial-list li {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.94rem;
            color: var(--text-weak);
            line-height: 1.65;
        }

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

        .editorial-list .step-num {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 50%;
            font-size: 0.8rem;
            font-weight: 700;
            margin-top: 2px;
        }

        .editorial-list li strong {
            color: var(--text);
            font-weight: 650;
        }

        /* Process steps */
        .process-block {
            background: var(--white);
            padding: var(--space-section) 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 8px;
        }

        .process-item {
            position: relative;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 30px 24px;
            border-top: 3px solid var(--accent);
            transition: box-shadow .3s ease, transform .3s ease;
        }

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

        .process-num {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: "Inter", system-ui, sans-serif;
            color: var(--accent);
            opacity: 0.85;
            line-height: 1;
            display: block;
            margin-bottom: 14px;
        }

        .process-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .process-item p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .process-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            z-index: 2;
            transform: translateY(-50%);
            box-shadow: 0 2px 8px rgba(255, 90, 31, 0.4);
        }

        .process-item:last-child .process-arrow {
            display: none;
        }

        /* Trust metrics */
        .trust-block {
            background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: var(--space-section) 0;
            position: relative;
            isolation: isolate;
        }

        .trust-block::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 22, 28, 0.96) 0%, rgba(18, 22, 28, 0.86) 100%);
            z-index: -1;
        }

        .trust-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 40px;
        }

        .trust-stat {
            text-align: left;
            padding: 28px 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius);
            transition: background .3s ease, border-color .3s ease, transform .3s ease;
        }

        .trust-stat:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 90, 31, 0.4);
            transform: translateY(-2px);
        }

        .trust-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            font-family: "Inter", system-ui, sans-serif;
            margin-bottom: 8px;
        }

        .trust-stat .trust-label {
            color: var(--white);
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .trust-stat .trust-note {
            color: rgba(232, 230, 225, 0.55);
            font-size: 0.84rem;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-block {
            padding: var(--space-section) 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s ease, border-color .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 90, 31, 0.4);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }

        .faq-item.active {
            border-color: rgba(255, 90, 31, 0.5);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            text-align: left;
            font-size: 1.02rem;
            font-weight: 650;
            color: var(--text);
            transition: color .25s ease;
            line-height: 1.5;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border: 1.5px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--accent);
            transition: transform .3s ease, background .3s ease, border-color .3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-soft);
            border-color: var(--accent);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            color: var(--text-weak);
            font-size: 0.93rem;
            line-height: 1.8;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* Final CTA */
        .final-cta {
            background: var(--primary);
            padding: 88px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .final-cta::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -20%;
            width: 70%;
            height: 220%;
            background: radial-gradient(circle, rgba(255, 90, 31, 0.14) 0%, transparent 60%);
            pointer-events: none;
        }

        .final-cta h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--white);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            position: relative;
        }

        .final-cta p {
            color: rgba(232, 230, 225, 0.66);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 34px;
            line-height: 1.8;
            position: relative;
        }

        .final-cta .btn-primary {
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: #0C0F14;
            padding: 72px 0 0;
            color: rgba(232, 230, 225, 0.72);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1.1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(232, 230, 225, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 650;
            color: var(--white);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(232, 230, 225, 0.58);
            transition: color .25s ease, padding-left .25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact div {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(232, 230, 225, 0.58);
            margin-bottom: 10px;
        }

        .footer-contact div i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(232, 230, 225, 0.4);
        }

        .footer-bottom a {
            color: rgba(232, 230, 225, 0.55);
        }

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

        /* Scroll indicator */
        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.2rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: bounceDown 2s infinite;
        }

        .scroll-indicator span {
            font-size: 0.72rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translate(-50%, 0);
            }

            50% {
                transform: translate(-50%, 10px);
            }
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .container {
                padding: 0 24px;
            }

            .section-block,
            .editorial-block {
                padding: var(--space-section-tablet) 0;
            }

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

            .core-card {
                padding: 28px 24px;
            }

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

            .editorial-media img {
                height: 300px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .process-arrow {
                display: none;
            }

            .trust-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

        @media (max-width: 639px) {
            .container {
                padding: 0 20px;
            }

            .section-block,
            .editorial-block {
                padding: var(--space-section-mobile) 0;
            }

            .nav-wrap {
                height: 64px;
            }

            .brand-logo {
                font-size: 1.12rem;
            }

            .hamburger-btn {
                display: flex;
            }

            .desktop-nav {
                display: none;
            }

            .desktop-nav.nav-open {
                display: flex;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                width: 100%;
                height: 100%;
                background: #0C0F14;
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                padding: 0;
                z-index: 1000;
                overflow-y: auto;
            }

            .mobile-nav-head {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 18px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            .mobile-nav-title {
                color: var(--white);
                font-weight: 700;
                font-size: 1rem;
            }

            .mobile-nav-close {
                display: flex;
                align-items: center;
                justify-content: center;
                background: transparent;
                border: 1px solid rgba(255, 255, 255, 0.2);
                color: var(--white);
                width: 40px;
                height: 40px;
                border-radius: var(--radius);
                font-size: 1.2rem;
                cursor: pointer;
                transition: background .2s, border-color .2s;
            }

            .mobile-nav-close:hover {
                background: rgba(255, 90, 31, 0.15);
                border-color: var(--accent);
            }

            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 32px;
                gap: 4px;
                width: 100%;
            }

            .nav-menu li a {
                color: var(--white);
                font-size: 1.05rem;
                padding: 16px 16px;
                border-radius: var(--radius);
                width: 100%;
                justify-content: flex-start;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-menu li a.active::after {
                display: none;
            }

            .nav-menu li a.nav-cta {
                margin: 16px 0 0;
                justify-content: center;
                font-size: 1rem;
                border-bottom: none;
            }

            .entry-hero {
                min-height: auto;
                padding: 120px 0 80px;
            }

            .entry-hero h1 {
                font-size: 2.2rem;
                padding-left: 16px;
                margin-bottom: 14px;
            }

            .entry-hero .hero-sub {
                font-size: 1rem;
                margin-bottom: 28px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-link {
                width: 100%;
                justify-content: center;
            }

            .scroll-indicator {
                display: none;
            }

            .ticker-inner {
                gap: 20px;
            }

            .ticker-item {
                font-size: 0.8rem;
            }

            .core-card {
                padding: 24px 20px;
            }

            .editorial-media img {
                height: 220px;
                border-radius: 8px;
            }

            .editorial-content h3 {
                font-size: 1.25rem;
            }

            .process-grid,
            .trust-stats {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .trust-stat {
                padding: 22px 20px;
            }

            .trust-number {
                font-size: 2rem;
            }

            .faq-item .faq-question {
                font-size: 0.95rem;
                padding: 18px 18px;
            }

            .faq-answer {
                padding: 0 18px 18px;
            }

            .final-cta {
                padding: 56px 0;
            }

            .final-cta h2 {
                font-size: 1.6rem;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .footer-bottom span {
                display: block;
            }
        }