/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #4F8BC7;
        --primary-dark: #3A6D99;
        --primary-light: #9BC2E6;
        --primary-bg: #F0F4F8;
        --accent: #D4A574;
        --accent-hover: #C49564;
        --text-dark: #1E2A3A;
        --text-body: #3D4F66;
        --text-muted: #7A8FA3;
        --text-white: #FFFFFF;
        --border-color: #E2E8F0;
        --shadow-color: rgba(79, 139, 199, 0.1);
        --shadow-color-strong: rgba(79, 139, 199, 0.18);
        --card-radius: 12px;
        --btn-radius: 8px;
        --input-radius: 8px;
        --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
        --spacing-section: 90px;
        --spacing-section-mobile: 50px;
        --transition-base: 0.3s ease;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--text-white);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--transition-base); }
    a:hover { color: var(--accent); }
    a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    button { cursor: pointer; background: none; }
    h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 600; line-height: 1.3; }

    /* ===== Container ===== */
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) {
        .container { padding: 0 16px; }
    }

    /* ===== Header & Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: var(--text-white);
        box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        z-index: 1000;
        display: flex;
        align-items: center;
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
    }
    .site-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 24px;
        font-weight: 700;
        color: var(--text-dark);
        letter-spacing: -0.5px;
        flex-shrink: 0;
    }
    .site-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: var(--primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        font-size: 16px;
    }
    .site-logo .logo-text { color: var(--text-dark); }
    .site-logo .logo-text span { color: var(--primary); }

    .main-nav { display: flex; align-items: center; gap: 8px; }
    .main-nav a {
        display: block;
        padding: 8px 18px;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-body);
        border-radius: 6px;
        transition: all var(--transition-base);
        position: relative;
        letter-spacing: 0.3px;
    }
    .main-nav a:hover { color: var(--primary); background: var(--primary-bg); }
    .main-nav a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 18px;
        right: 18px;
        height: 2px;
        background: var(--primary);
        border-radius: 1px;
    }
    .nav-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 10px 28px;
        background: var(--primary);
        color: var(--text-white) !important;
        border-radius: var(--btn-radius);
        font-weight: 500;
        font-size: 16px;
        transition: all var(--transition-base);
        letter-spacing: 0.5px;
        margin-left: 12px;
    }
    .nav-cta:hover { background: var(--primary-dark); color: var(--text-white) !important; box-shadow: 0 4px 16px var(--shadow-color); transform: translateY(-1px); }
    .nav-cta:active { transform: scale(0.97); }

    /* Hamburger */
    .hamburger {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 6px;
        cursor: pointer;
        background: none;
        border: none;
    }
    .hamburger span {
        display: block;
        width: 26px;
        height: 2.5px;
        background: var(--text-dark);
        border-radius: 2px;
        transition: all var(--transition-base);
    }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* Mobile Nav */
    .mobile-nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--text-white);
        padding: 32px 24px;
        flex-direction: column;
        gap: 8px;
        z-index: 999;
        overflow-y: auto;
        box-shadow: 0 8px 32px rgba(0,0,0,0.08);
    }
    .mobile-nav.open { display: flex; }
    .mobile-nav a {
        display: block;
        padding: 14px 20px;
        font-size: 18px;
        font-weight: 500;
        color: var(--text-body);
        border-radius: 8px;
        transition: all var(--transition-base);
    }
    .mobile-nav a:hover { background: var(--primary-bg); color: var(--primary); }
    .mobile-nav a.active { color: var(--primary); font-weight: 600; background: var(--primary-bg); }
    .mobile-nav .nav-cta {
        margin-left: 0;
        margin-top: 12px;
        text-align: center;
        padding: 14px 28px;
    }

    @media (max-width: 768px) {
        .main-nav { display: none; }
        .hamburger { display: flex; }
    }
    @media (min-width: 769px) {
        .mobile-nav { display: none !important; }
    }

    /* ===== Hero ===== */
    .hero {
        padding-top: var(--header-height);
        min-height: 75vh;
        display: flex;
        align-items: center;
        background: linear-gradient(135deg, #F0F4F8 0%, #E8F0F8 100%);
        position: relative;
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.20;
        z-index: 1;
    }
    .hero .container {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 60px;
        padding-top: 40px;
        padding-bottom: 40px;
    }
    .hero-content { flex: 1 1 55%; }
    .hero-image { flex: 1 1 45%; }
    .hero-image img {
        width: 100%;
        border-radius: var(--card-radius);
        box-shadow: 0 12px 40px var(--shadow-color);
        aspect-ratio: 4/3;
        object-fit: cover;
    }
    .hero h1 {
        font-size: 42px;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1.2;
        letter-spacing: -0.5px;
        margin-bottom: 20px;
    }
    .hero h1 .highlight { color: var(--primary); }
    .hero-sub {
        font-size: 20px;
        line-height: 1.6;
        color: var(--text-body);
        max-width: 600px;
        margin-bottom: 32px;
    }
    .hero-cta {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 14px 40px;
        background: var(--primary);
        color: var(--text-white);
        font-size: 18px;
        font-weight: 500;
        border-radius: var(--btn-radius);
        transition: all var(--transition-base);
        letter-spacing: 0.5px;
    }
    .hero-cta:hover { background: var(--primary-dark); color: var(--text-white); box-shadow: 0 6px 24px var(--shadow-color-strong); transform: translateY(-2px); }
    .hero-cta:active { transform: scale(0.97); }

    @media (max-width: 1024px) {
        .hero h1 { font-size: 34px; }
        .hero-sub { font-size: 18px; }
    }
    @media (max-width: 768px) {
        .hero { min-height: 60vh; }
        .hero .container { flex-direction: column; gap: 32px; padding-top: 24px; padding-bottom: 24px; }
        .hero-content { flex: none; width: 100%; text-align: center; }
        .hero-image { flex: none; width: 100%; max-width: 480px; margin: 0 auto; }
        .hero h1 { font-size: 28px; }
        .hero-sub { font-size: 16px; max-width: 100%; }
        .hero-cta { padding: 12px 32px; font-size: 16px; }
    }

    /* ===== Section Shared ===== */
    .section { padding: var(--spacing-section) 0; }
    .section-alt { background: var(--primary-bg); }
    .section-title {
        font-size: 28px;
        font-weight: 600;
        color: var(--text-dark);
        text-align: center;
        margin-bottom: 12px;
        letter-spacing: -0.3px;
    }
    .section-subtitle {
        text-align: center;
        font-size: 18px;
        color: var(--text-muted);
        max-width: 680px;
        margin: 0 auto 48px auto;
        line-height: 1.6;
    }
    @media (max-width: 768px) {
        .section { padding: var(--spacing-section-mobile) 0; }
        .section-title { font-size: 22px; }
        .section-subtitle { font-size: 16px; margin-bottom: 32px; }
    }

    /* ===== Brand Story ===== */
    .brand-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
        margin-top: 16px;
    }
    .brand-item { text-align: center; padding: 32px 20px; background: var(--text-white); border-radius: var(--card-radius); box-shadow: 0 4px 20px var(--shadow-color); transition: all var(--transition-base); }
    .brand-item:hover { box-shadow: 0 8px 40px var(--shadow-color-strong); transform: translateY(-4px); }
    .brand-item .icon {
        width: 64px;
        height: 64px;
        margin: 0 auto 16px;
        background: var(--primary-bg);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 28px;
        color: var(--primary);
    }
    .brand-item h3 { font-size: 22px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
    .brand-item h3 span { color: var(--primary); }
    .brand-item p { font-size: 15px; color: var(--text-body); line-height: 1.7; }
    @media (max-width: 768px) {
        .brand-grid { grid-template-columns: 1fr; gap: 24px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .brand-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== Featured Cards ===== */
    .featured-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    .featured-card {
        background: var(--text-white);
        border-radius: var(--card-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        overflow: hidden;
        transition: all var(--transition-base);
        display: flex;
        flex-direction: column;
    }
    .featured-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.12); transform: translateY(-4px); }
    .featured-card .card-img {
        aspect-ratio: 16/9;
        object-fit: cover;
        width: 100%;
        display: block;
    }
    .featured-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .featured-card .card-tag {
        display: inline-block;
        background: var(--primary-bg);
        color: var(--primary);
        font-size: 13px;
        font-weight: 500;
        padding: 4px 12px;
        border-radius: 4px;
        margin-bottom: 12px;
        width: fit-content;
    }
    .featured-card .card-title {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 10px;
        line-height: 1.4;
    }
    .featured-card .card-desc {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.7;
        flex: 1;
        margin-bottom: 16px;
    }
    .featured-card .card-link {
        font-weight: 500;
        color: var(--primary);
        font-size: 15px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: color var(--transition-base);
    }
    .featured-card .card-link:hover { color: var(--accent); }
    .featured-card .card-link::after { content: '→'; transition: transform var(--transition-base); display: inline-block; }
    .featured-card .card-link:hover::after { transform: translateX(4px); }

    @media (max-width: 768px) {
        .featured-grid { grid-template-columns: 1fr; gap: 20px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .featured-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== Trust ===== */
    .trust-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 50px;
        align-items: center;
    }
    .trust-logos {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    .trust-logos .logo-item {
        background: var(--text-white);
        border-radius: 8px;
        padding: 16px 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 12px var(--shadow-color);
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
        text-align: center;
        min-height: 60px;
        border: 1px solid var(--border-color);
    }
    .trust-stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    .trust-stat { text-align: center; padding: 24px 16px; }
    .trust-stat .number {
        font-size: 42px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.1;
        margin-bottom: 6px;
    }
    .trust-stat .number .suffix { font-size: 20px; font-weight: 500; color: var(--primary); }
    .trust-stat .label { font-size: 15px; color: var(--text-body); font-weight: 500; }
    @media (max-width: 768px) {
        .trust-grid { grid-template-columns: 1fr; gap: 32px; }
        .trust-logos { grid-template-columns: repeat(3, 1fr); gap: 12px; }
        .trust-stat .number { font-size: 32px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .trust-logos { grid-template-columns: repeat(3, 1fr); }
        .trust-stat .number { font-size: 36px; }
    }

    /* ===== News / CMS List ===== */
    .news-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    .news-card {
        background: var(--text-white);
        border-radius: var(--card-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        overflow: hidden;
        transition: all var(--transition-base);
        display: flex;
        flex-direction: column;
    }
    .news-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.12); transform: translateY(-3px); }
    .news-card .card-img {
        aspect-ratio: 16/9;
        object-fit: cover;
        width: 100%;
        display: block;
    }
    .news-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .news-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 12px;
        flex-wrap: wrap;
    }
    .news-card .card-tag {
        display: inline-block;
        background: var(--primary-bg);
        color: var(--primary);
        font-size: 12px;
        font-weight: 500;
        padding: 3px 10px;
        border-radius: 4px;
    }
    .news-card .card-date {
        font-size: 13px;
        color: var(--text-muted);
    }
    .news-card .card-title {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 10px;
        line-height: 1.4;
    }
    .news-card .card-desc {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.7;
        flex: 1;
        margin-bottom: 14px;
    }
    .news-card .card-link {
        font-weight: 500;
        color: var(--primary);
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: color var(--transition-base);
    }
    .news-card .card-link:hover { color: var(--accent); }
    .news-card .card-link::after { content: '→'; transition: transform var(--transition-base); display: inline-block; }
    .news-card .card-link:hover::after { transform: translateX(4px); }

    .news-empty {
        grid-column: 1 / -1;
        text-align: center;
        padding: 40px 20px;
        color: var(--text-muted);
        font-size: 16px;
        background: var(--text-white);
        border-radius: var(--card-radius);
        box-shadow: 0 2px 12px var(--shadow-color);
    }

    @media (max-width: 768px) {
        .news-grid { grid-template-columns: 1fr; gap: 20px; }
    }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item {
        background: var(--text-white);
        border-radius: var(--card-radius);
        box-shadow: 0 2px 12px var(--shadow-color);
        margin-bottom: 16px;
        overflow: hidden;
        transition: box-shadow var(--transition-base);
    }
    .faq-item:hover { box-shadow: 0 4px 24px var(--shadow-color-strong); }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        font-size: 17px;
        font-weight: 500;
        color: var(--text-dark);
        cursor: pointer;
        transition: color var(--transition-base);
        gap: 16px;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-question .icon {
        flex-shrink: 0;
        font-size: 20px;
        color: var(--primary);
        transition: transform var(--transition-base);
        line-height: 1;
    }
    .faq-item.open .faq-question .icon { transform: rotate(45deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
        color: var(--text-body);
        font-size: 15px;
        line-height: 1.8;
    }
    .faq-item.open .faq-answer {
        max-height: 400px;
        padding: 0 24px 20px 24px;
    }
    @media (max-width: 768px) {
        .faq-question { font-size: 15px; padding: 16px 18px; }
        .faq-item.open .faq-answer { padding: 0 18px 16px 18px; font-size: 14px; }
    }

    /* ===== CTA ===== */
    .cta-section {
        background: var(--primary);
        padding: 80px 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.08;
        z-index: 1;
    }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 {
        font-size: 32px;
        font-weight: 600;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: -0.3px;
    }
    .cta-section p {
        font-size: 18px;
        color: rgba(255,255,255,0.85);
        max-width: 560px;
        margin: 0 auto 32px;
        line-height: 1.6;
    }
    .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 44px;
        background: var(--text-white);
        color: var(--primary);
        font-size: 18px;
        font-weight: 500;
        border-radius: var(--btn-radius);
        transition: all var(--transition-base);
        letter-spacing: 0.5px;
    }
    .cta-btn:hover { background: var(--accent); color: var(--text-white); box-shadow: 0 6px 24px rgba(0,0,0,0.15); transform: translateY(-2px); }
    .cta-btn:active { transform: scale(0.97); }
    @media (max-width: 768px) {
        .cta-section { padding: 50px 0; }
        .cta-section h2 { font-size: 24px; }
        .cta-section p { font-size: 16px; }
        .cta-btn { padding: 12px 32px; font-size: 16px; }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--primary-dark);
        color: rgba(255,255,255,0.9);
        padding: 64px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,0.15);
    }
    .footer-brand .footer-logo {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .footer-brand .footer-logo .logo-icon {
        width: 32px;
        height: 32px;
        background: rgba(255,255,255,0.2);
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        color: var(--text-white);
    }
    .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.7); max-width: 280px; }
    .footer-col h4 {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: 0.3px;
    }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a {
        font-size: 14px;
        color: rgba(255,255,255,0.7);
        transition: color var(--transition-base);
    }
    .footer-col ul li a:hover { color: var(--primary-light); }
    .footer-contact p {
        font-size: 14px;
        color: rgba(255,255,255,0.7);
        margin-bottom: 8px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .footer-contact p i { width: 18px; color: var(--primary-light); }
    .footer-bottom {
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: rgba(255,255,255,0.5);
    }
    .footer-bottom a { color: rgba(255,255,255,0.6); }
    .footer-bottom a:hover { color: var(--primary-light); }

    @media (max-width: 768px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        .footer-brand { grid-column: 1 / -1; }
    }
    @media (max-width: 520px) {
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .mt-16 { margin-top: 16px; }
    .mb-16 { margin-bottom: 16px; }
    .gap-8 { gap: 8px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }

    /* ===== Responsive fine-tune ===== */
    @media (max-width: 480px) {
        .hero h1 { font-size: 24px; }
        .hero-sub { font-size: 15px; }
        .trust-stats { grid-template-columns: 1fr 1fr; gap: 16px; }
        .trust-stat .number { font-size: 28px; }
    }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #4F8BC7;
            --primary-dark: #3A6D99;
            --primary-light: #9BC2E6;
            --primary-bg: #F0F4F8;
            --accent: #D4A574;
            --text-dark: #1E2A3A;
            --text-body: #3D4F66;
            --text-muted: #7A8FA3;
            --border: #E2E8F0;
            --white: #FFFFFF;
            --shadow: rgba(79, 139, 199, 0.1);
            --shadow-hover: rgba(79, 139, 199, 0.2);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-img: 8px;
            --radius-input: 8px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --max-width: 1200px;
            --content-width: 780px;
            --header-height: 72px;
            --space-section: 80px;
            --space-section-mobile: 48px;
            --transition: 0.3s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-img);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 600;
            line-height: 1.3;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--white);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--text-dark);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: var(--white);
            border-radius: 8px;
            font-size: 20px;
            font-weight: 700;
        }
        .logo span:last-child {
            letter-spacing: -0.3px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            letter-spacing: 0.3px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav .nav-cta {
            background: var(--primary);
            color: var(--white) !important;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            transition: background var(--transition), transform var(--transition);
            letter-spacing: 0.5px;
        }
        .main-nav .nav-cta::after {
            display: none;
        }
        .main-nav .nav-cta:hover {
            background: var(--primary-dark);
            color: var(--white) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px var(--shadow-hover);
        }
        .main-nav .nav-cta:active {
            transform: scale(0.97);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 30px;
            height: 30px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Nav */
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--white);
                flex-direction: column;
                align-items: flex-start;
                padding: 100px 32px 40px;
                gap: 20px;
                box-shadow: -4px 0 24px rgba(0, 0, 0, 0.08);
                transition: right 0.4s ease;
                z-index: 999;
            }
            .main-nav.open {
                right: 0;
            }
            .main-nav a {
                font-size: 18px;
                width: 100%;
                padding: 8px 0;
            }
            .main-nav a::after {
                bottom: 4px;
            }
            .main-nav .nav-cta {
                text-align: center;
                padding: 12px 0;
                width: 100%;
                margin-top: 12px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding-top: calc(var(--header-height) + 24px);
            padding-bottom: 12px;
            background: var(--primary-bg);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Article Main ===== */
        .article-section {
            padding: 40px 0 var(--space-section);
            background: var(--white);
        }
        .article-wrapper {
            max-width: var(--content-width);
            margin: 0 auto;
        }
        .article-header {
            margin-bottom: 32px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 24px;
        }
        .article-header h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            font-size: 14px;
            color: var(--primary-light);
        }
        .article-meta .category-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 600;
            margin: 36px 0 16px;
            color: var(--text-dark);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 500;
            margin: 28px 0 12px;
            color: var(--text-dark);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-body blockquote {
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            color: var(--text-body);
            font-style: normal;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body img {
            margin: 24px auto;
            border-radius: var(--radius-img);
            max-width: 100%;
            height: auto;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-body table th {
            background: var(--primary);
            color: var(--white);
            padding: 12px 16px;
            text-align: left;
            font-weight: 500;
        }
        .article-body table td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .article-body table tr:nth-child(even) td {
            background: var(--primary-bg);
        }
        .article-body table tr:hover td {
            background: rgba(79, 139, 199, 0.05);
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--accent);
        }
        .article-footer-nav {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-nav .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 15px;
            transition: color var(--transition);
        }
        .article-footer-nav .back-link:hover {
            color: var(--primary);
        }
        .article-footer-nav .back-link i {
            font-size: 14px;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--text-body);
            transition: background var(--transition), color var(--transition);
            font-size: 15px;
        }
        .article-share a:hover {
            background: var(--primary);
            color: var(--white);
        }

        /* Article not found */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-muted);
        }
        .article-not-found i {
            font-size: 56px;
            color: var(--border);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 24px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            font-size: 16px;
            margin-bottom: 24px;
        }
        .article-not-found a {
            display: inline-block;
            padding: 10px 28px;
            background: var(--primary);
            color: var(--white);
            border-radius: var(--radius-btn);
            transition: background var(--transition), transform var(--transition);
        }
        .article-not-found a:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--shadow-hover);
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--primary-bg);
        }
        .related-section .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 32px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 4px 20px var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 8px 40px var(--shadow-hover);
        }
        .related-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-bg);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 24px 24px;
        }
        .related-card .card-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 13px;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            font-weight: 500;
        }
        .related-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-title a {
            color: var(--text-dark);
            transition: color var(--transition);
        }
        .related-card .card-title a:hover {
            color: var(--primary);
        }
        .related-card .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .related-card .card-link:hover {
            color: var(--accent);
        }
        .related-card .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .related-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--white);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            background: rgba(255, 255, 255, 0.2);
            color: var(--white);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.8);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 8px;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: var(--space-section-mobile);
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .article-footer-nav {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-section {
                padding: 24px 0 var(--space-section);
            }
        }
        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 20px;
            }
            .article-meta {
                gap: 10px 16px;
                font-size: 13px;
            }
            .article-body {
                font-size: 14px;
                line-height: 1.75;
            }
            .article-body blockquote {
                padding: 12px 16px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Smooth loading ===== */
        .fade-in {
            animation: fadeIn 0.5s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category1 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #4F8BC7;
            --primary-dark: #3A6D99;
            --primary-light: #6DA4D9;
            --secondary: #9BC2E6;
            --bg-light: #F0F4F8;
            --accent: #D4A574;
            --text-heading: #1E2A3A;
            --text-body: #3D4F66;
            --text-weak: #7A8FA3;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-color: rgba(79, 139, 199, 0.1);
            --shadow-hover: rgba(79, 139, 199, 0.18);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-sm: 6px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --transition: 0.3s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 600;
            line-height: 1.3;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--white);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.3px;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 8px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .logo span:last-child {
            color: var(--text-heading);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            transition: color var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.nav-cta {
            background: var(--primary);
            color: var(--white);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: background var(--transition), transform 0.2s;
        }
        .main-nav a.nav-cta::after {
            display: none;
        }
        .main-nav a.nav-cta:hover {
            background: var(--accent);
            color: var(--white);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text-heading);
            border-radius: 3px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Mobile Nav Overlay ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            height: calc(100vh - var(--header-height));
            background: var(--white);
            z-index: 999;
            padding: 32px 24px;
            flex-direction: column;
            gap: 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            overflow-y: auto;
        }
        .mobile-nav-overlay.open {
            display: flex;
        }
        .mobile-nav-overlay a {
            font-size: 20px;
            font-weight: 500;
            color: var(--text-body);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: color var(--transition);
        }
        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--primary);
        }
        .mobile-nav-overlay a.nav-cta {
            background: var(--primary);
            color: var(--white);
            text-align: center;
            padding: 14px 0;
            border-radius: var(--radius-btn);
            border-bottom: none;
            margin-top: 12px;
        }
        .mobile-nav-overlay a.nav-cta:hover {
            background: var(--accent);
            color: var(--white);
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--bg-light) 0%, #E8F0F8 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center/cover;
            opacity: 0.15;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .page-hero-text {
            flex: 1;
            max-width: 600px;
        }
        .page-hero-text h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .page-hero-text h1 span {
            color: var(--primary);
        }
        .page-hero-text p {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 32px;
            max-width: 520px;
        }
        .page-hero-text .hero-cta {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 17px;
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: background var(--transition), transform 0.2s;
        }
        .page-hero-text .hero-cta:hover {
            background: var(--accent);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--shadow-hover);
        }
        .page-hero-image {
            flex: 1;
            max-width: 480px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 12px 40px var(--shadow-color);
        }
        .page-hero-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }

        /* ===== Section共用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.3px;
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .section-header .subtitle-tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== 品牌承诺 ===== */
        .brand-promise {
            background: var(--white);
            padding: 80px 0;
        }
        .brand-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            text-align: center;
        }
        .brand-item {
            padding: 32px 20px;
            border-radius: var(--radius-card);
            background: var(--bg-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .brand-item:hover {
            box-shadow: 0 8px 32px var(--shadow-color);
            transform: translateY(-4px);
        }
        .brand-item .icon-wrap {
            font-size: 40px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .brand-item h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-heading);
        }
        .brand-item p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== 核心诊疗项目 ===== */
        .service-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 4px 20px var(--shadow-color);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: 0 12px 40px var(--shadow-hover);
            transform: translateY(-6px);
        }
        .service-card .card-img {
            height: 200px;
            overflow: hidden;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.05);
        }
        .service-card .card-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-heading);
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }
        .service-card .card-link {
            margin-top: 16px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .service-card .card-link:hover {
            color: var(--accent);
        }
        .service-card .card-link i {
            font-size: 14px;
            transition: transform var(--transition);
        }
        .service-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 诊疗流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 32px 20px;
            text-align: center;
            box-shadow: 0 4px 16px var(--shadow-color);
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .process-step:hover {
            box-shadow: 0 8px 32px var(--shadow-hover);
            transform: translateY(-4px);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 4px 12px var(--shadow-color);
        }
        .process-step .icon-wrap {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 14px;
            margin-top: 8px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-heading);
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* ===== 信任背书 ===== */
        .trust-section {
            background: var(--primary);
            color: var(--white);
            padding: 80px 0;
        }
        .trust-section .section-header h2 {
            color: var(--white);
        }
        .trust-section .section-header p {
            color: rgba(255, 255, 255, 0.85);
        }
        .trust-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .trust-logos {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .trust-logos .logo-item {
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: 16px 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            text-align: center;
            min-height: 60px;
            backdrop-filter: blur(4px);
            transition: background 0.3s;
        }
        .trust-logos .logo-item:hover {
            background: rgba(255, 255, 255, 0.25);
        }
        .trust-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .trust-stat {
            text-align: center;
        }
        .trust-stat .number {
            font-size: 48px;
            font-weight: 700;
            color: var(--white);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .trust-stat .label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            letter-spacing: 0.3px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-heading);
            padding: 4px 0;
            transition: color var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 0 0 0;
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 14px 0 6px 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 0;
            text-align: center;
            color: var(--white);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-block;
            background: var(--white);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: var(--radius-btn);
            font-size: 17px;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: background var(--transition), color var(--transition), transform 0.2s;
        }
        .cta-section .cta-btn:hover {
            background: var(--accent);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--white);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }
        .footer-col h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col p,
        .footer-col li {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo .logo-icon {
            background: var(--white);
            color: var(--primary-dark);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            max-width: 300px;
        }
        .footer-col ul li {
            padding: 4px 0;
        }
        .footer-contact p {
            padding: 3px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom {
            text-align: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-hero-text h1 {
                font-size: 34px;
            }
            .service-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .trust-logos {
                grid-template-columns: repeat(4, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .page-hero {
                padding: 120px 0 60px;
            }
            .page-hero .container {
                flex-direction: column;
                gap: 32px;
            }
            .page-hero-text h1 {
                font-size: 28px;
            }
            .page-hero-text p {
                font-size: 16px;
            }
            .page-hero-image {
                max-width: 100%;
            }
            .page-hero-image img {
                height: 220px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .brand-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .service-cards {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .trust-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .trust-stat .number {
                font-size: 36px;
            }
            .trust-logos {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
        }

        @media (max-width: 480px) {
            .page-hero-text h1 {
                font-size: 24px;
            }
            .page-hero-text .hero-cta {
                padding: 12px 28px;
                font-size: 15px;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .trust-logos {
                grid-template-columns: 1fr 1fr;
            }
            .trust-stats {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .trust-stat .number {
                font-size: 30px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ===== Back to top (optional) ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 16px var(--shadow-hover);
            z-index: 99;
            transition: background var(--transition), transform 0.2s;
            opacity: 0;
            pointer-events: none;
        }
        .back-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-top:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #4F8BC7;
            --primary-dark: #3A6D99;
            --primary-light: #9BC2E6;
            --primary-bg: #F0F4F8;
            --accent: #D4A574;
            --accent-light: #E8C9A8;
            --text-dark: #1E2A3A;
            --text-body: #3D4F66;
            --text-muted: #7A8FA3;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow: rgba(79, 139, 199, 0.1);
            --shadow-hover: rgba(79, 139, 199, 0.18);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-img: 8px;
            --radius-badge: 4px;
            --font-base: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            color: var(--text-body);
            background-color: var(--white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-img);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            text-align: center;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

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

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            z-index: 1000;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            text-decoration: none;
        }
        .logo:hover {
            color: var(--text-dark);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: var(--white);
            border-radius: 8px;
            font-size: 20px;
            font-weight: 700;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            letter-spacing: 0.3px;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .main-nav a.active::after {
            width: 100%;
        }

        .main-nav .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: var(--white);
            padding: 8px 24px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: background var(--transition), transform var(--transition);
        }
        .main-nav .nav-cta::after {
            display: none;
        }
        .main-nav .nav-cta:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
        }
        .main-nav .nav-cta:active {
            transform: scale(0.97);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            width: 100%;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            padding: 16px 24px;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
            opacity: 0;
            transform: translateY(-8px);
            transition: opacity 0.3s ease, transform 0.3s ease;
            pointer-events: none;
        }
        .mobile-nav.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .mobile-nav a {
            font-size: 17px;
            font-weight: 500;
            color: var(--text-body);
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
        }
        .mobile-nav .nav-cta-mobile {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: var(--white);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            margin-top: 4px;
            border-bottom: none;
        }
        .mobile-nav .nav-cta-mobile:hover {
            background: var(--primary-dark);
            color: var(--white);
        }

        /* ===== Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #F0F4F8 0%, #E8F0F8 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .page-hero .container {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .page-hero-text {
            flex: 1 1 50%;
        }
        .page-hero-text h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 20px;
        }
        .page-hero-text h1 span {
            color: var(--primary);
        }
        .page-hero-text p {
            font-size: 18px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 560px;
            margin-bottom: 28px;
        }
        .page-hero-text .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: var(--white);
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-size: 17px;
            font-weight: 500;
            transition: background var(--transition), transform var(--transition);
        }
        .page-hero-text .hero-cta:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
        }
        .page-hero-text .hero-cta:active {
            transform: scale(0.97);
        }
        .page-hero-image {
            flex: 1 1 50%;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(79, 139, 199, 0.12);
        }
        .page-hero-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            display: block;
        }

        .hero-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        /* ===== 板块通用 ===== */
        .bg-light {
            background: var(--primary-bg);
        }

        /* ===== 核心卖点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 8px;
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: 0 4px 20px var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 40px var(--shadow-hover);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: var(--primary-bg);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 28px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 适用场景 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .scene-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .scene-item:hover {
            box-shadow: 0 6px 24px var(--shadow);
            transform: translateY(-2px);
        }
        .scene-item .num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
        }
        .scene-item h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .scene-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 服务流程 ===== */
        .process-steps {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            counter-reset: step;
            flex-wrap: wrap;
        }
        .process-step {
            flex: 1 1 180px;
            text-align: center;
            position: relative;
            padding: 24px 16px;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 40px;
            right: -24px;
            width: 32px;
            height: 2px;
            background: var(--primary-light);
        }
        .process-step:last-child::after {
            display: none;
        }
        .process-step .step-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: var(--primary-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            border: 2px solid var(--primary-light);
            transition: background var(--transition), color var(--transition);
        }
        .process-step:hover .step-icon {
            background: var(--primary);
            color: var(--white);
        }
        .process-step h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== 数据/信任 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
        }
        .stat-item .number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .label {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* ===== 图文区块 ===== */
        .media-block {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .media-block.reverse {
            flex-direction: row-reverse;
        }
        .media-block .media-text {
            flex: 1 1 50%;
        }
        .media-block .media-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .media-block .media-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .media-block .media-text ul {
            margin-top: 12px;
        }
        .media-block .media-text ul li {
            font-size: 15px;
            color: var(--text-body);
            padding: 6px 0 6px 28px;
            position: relative;
        }
        .media-block .media-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .media-block .media-image {
            flex: 1 1 50%;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
        }
        .media-block .media-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: 0 2px 12px var(--shadow);
        }
        .faq-question {
            width: 100%;
            background: var(--white);
            border: none;
            padding: 18px 24px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-bg);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-card);
            padding: 56px 48px;
            text-align: center;
            color: var(--white);
        }
        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-block p {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--white);
            color: var(--primary);
            padding: 12px 36px;
            border-radius: var(--radius-btn);
            font-size: 17px;
            font-weight: 600;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .cta-block .cta-btn:hover {
            background: var(--accent);
            color: var(--white);
            transform: translateY(-2px);
        }
        .cta-block .cta-btn:active {
            transform: scale(0.97);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--white);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            background: var(--white);
            color: var(--primary-dark);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.85;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-contact p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            opacity: 0.7;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-hero-text h1 {
                font-size: 32px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                justify-content: center;
            }
            .process-step {
                flex: 1 1 160px;
            }
            .process-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }

            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero .container {
                flex-direction: column;
                gap: 32px;
            }
            .page-hero-text h1 {
                font-size: 28px;
            }
            .page-hero-text p {
                font-size: 16px;
            }
            .page-hero-image img {
                height: 220px;
            }

            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 16px;
                margin-bottom: 32px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .number {
                font-size: 32px;
            }
            .process-steps {
                flex-direction: column;
                align-items: center;
                gap: 24px;
            }
            .process-step {
                flex: 1 1 auto;
                width: 100%;
                max-width: 280px;
            }

            .media-block {
                flex-direction: column;
                gap: 24px;
            }
            .media-block.reverse {
                flex-direction: column;
            }
            .media-block .media-image img {
                height: 240px;
            }

            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block p {
                font-size: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero-text h1 {
                font-size: 24px;
            }
            .page-hero-text .hero-cta {
                padding: 10px 24px;
                font-size: 15px;
            }
            .stat-item .number {
                font-size: 28px;
            }
            .stat-item .label {
                font-size: 14px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 14px;
            }
            .cta-block {
                padding: 28px 16px;
            }
            .cta-block h2 {
                font-size: 20px;
            }
            .cta-block .cta-btn {
                padding: 10px 24px;
                font-size: 15px;
            }
        }