/* ====== 深色奢华主题变量 ====== */
    :root {
        --primary: #1a1a2e;
        --primary-2: #16213e;
        --primary-3: #0f3460;
        --accent: #e94560;
        --accent-soft: rgba(233,69,96,0.15);
        --gold: #f5a623;
        --gold-soft: rgba(245,166,35,0.12);
        --text: #e8eaf0;
        --text-strong: #ffffff;
        --text-muted: #a6abc0;
        --text-dim: #7c8296;
        --panel: rgba(255,255,255,0.04);
        --panel-2: rgba(255,255,255,0.06);
        --border: rgba(255,255,255,0.10);
        --border-strong: rgba(255,255,255,0.18);
        --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
        --gradient-accent: linear-gradient(135deg, #e94560, #f5a623);
        --shadow: 0 10px 40px rgba(0,0,0,0.35);
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 17px; }
    body {
        font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        color: var(--text); background: var(--primary); line-height: 1.85; font-size: 1rem;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; height: auto; }
    ul { list-style: none; }

    .container { max-width: 1140px; margin: 0 auto; padding: 0 28px; }
    .section { padding: 96px 0; }
    .section-sub { font-size: 0.95rem; font-weight: 600; color: var(--accent); letter-spacing: 3px; margin-bottom: 10px; }
    .section-title { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; color: var(--text-strong); line-height: 1.25; margin-bottom: 16px; }
    .section-desc { font-size: 1.05rem; color: var(--text-muted); max-width: 720px; line-height: 1.9; margin-bottom: 56px; }
    .text-center { text-align: center; }
    .mx-auto { margin-left: auto; margin-right: auto; }

    /* ====== NAV ====== */
    nav {
        position: fixed; top: 0; left: 0; right: 0; z-index: 100;
        background: rgba(26,26,46,0.9); backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        transition: box-shadow 0.3s;
    }
    nav.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.4); }
    .nav-inner {
        max-width: 1140px; margin: 0 auto; padding: 0 28px;
        display: flex; align-items: center; justify-content: space-between; height: 70px;
    }
    .logo-wrap { display: flex; align-items: center; gap: 12px; }
    .logo-img { height: 44px; width: auto; flex-shrink: 0; border-radius: 8px; }
    .logo-name { font-size: 1.05rem; font-weight: 700; color: var(--text-strong); }
    .logo-sub { font-size: 0.72rem; color: var(--text-dim); letter-spacing: 1px; }
    .nav-links { display: flex; align-items: center; gap: 6px; }
    .nav-links a {
        padding: 9px 16px; font-size: 0.95rem; color: var(--text-muted);
        border-radius: 8px; transition: all 0.2s; white-space: nowrap;
    }
    .nav-links a:hover { background: var(--panel-2); color: var(--text-strong); }
    .nav-cta {
        background: var(--accent); color: #fff !important; padding: 9px 20px !important;
        font-weight: 600; border-radius: 8px !important;
    }
    .nav-cta:hover { background: #d6384a !important; }
    .menu-toggle { display: none; background: none; border: none; padding: 8px; cursor: pointer; }
    .menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text-strong); margin: 5px 0; border-radius: 2px; }

    /* ====== HERO ====== */
    .hero {
        padding: 160px 0 90px; background: var(--gradient-hero);
        position: relative; overflow: hidden;
    }
    .hero::before {
        content: ''; position: absolute; inset: 0;
        background:
            radial-gradient(ellipse at 18% 30%, rgba(233,69,96,0.18) 0%, transparent 55%),
            radial-gradient(ellipse at 85% 15%, rgba(245,166,35,0.10) 0%, transparent 50%);
    }
    .hero::after {
        content: ''; position: absolute; inset: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
        background-size: 64px 64px;
    }
    .hero .container { position: relative; z-index: 1; }
    .hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
    .hero-badge {
        display: inline-flex; align-items: center; gap: 8px;
        background: var(--accent-soft); color: #ff8fa3;
        padding: 8px 16px; border-radius: 24px; font-size: 0.9rem; font-weight: 500; margin-bottom: 24px;
        border: 1px solid rgba(233,69,96,0.3);
    }
    .hero h1 { font-size: clamp(36px, 4.4vw, 60px); font-weight: 900; color: var(--text-strong); line-height: 1.18; margin-bottom: 20px; }
    .hero h1 .highlight { background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero p { font-size: 1.12rem; color: var(--text-muted); line-height: 1.95; margin-bottom: 36px; max-width: 560px; }
    .hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
    .btn-primary {
        display: inline-flex; align-items: center; gap: 8px;
        background: var(--accent); color: #fff; padding: 15px 32px;
        border-radius: 10px; font-size: 1.02rem; font-weight: 600;
        transition: all 0.2s; border: none; cursor: pointer;
    }
    .btn-primary:hover { background: #d6384a; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(233,69,96,0.4); }
    .btn-secondary {
        display: inline-flex; align-items: center;
        background: var(--panel-2); color: var(--text-strong); padding: 15px 32px;
        border: 1px solid var(--border-strong); border-radius: 10px; font-size: 1.02rem; font-weight: 500;
        transition: all 0.2s;
    }
    .btn-secondary:hover { background: rgba(255,255,255,0.12); }
    .hero-stats { display: flex; gap: 40px; margin-top: 48px; }
    .stat-num { font-size: 40px; font-weight: 900; background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.1; }
    .stat-label { font-size: 0.92rem; color: var(--text-dim); margin-top: 4px; }
    .hero-visual {
        background: var(--panel); border-radius: 18px; padding: 44px;
        box-shadow: var(--shadow); border: 1px solid var(--border);
        display: flex; flex-direction: column; gap: 22px;
    }
    .hero-visual h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-strong); margin-bottom: 6px; }
    .hero-visual > p { font-size: 1rem; color: var(--text-muted); margin: 0; }
    .hero-visual-item { padding: 18px; background: var(--panel-2); border-radius: 12px; border-left: 3px solid var(--accent); }
    .hero-visual-item h4 { font-size: 1.02rem; font-weight: 600; color: var(--text-strong); margin-bottom: 6px; }
    .hero-visual-item p { font-size: 0.95rem; color: var(--text-muted); }

    /* ====== ABOUT ====== */
    .about-section { background: var(--primary); }
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
    .about-text p { color: var(--text-muted); line-height: 2; margin-bottom: 18px; font-size: 1.02rem; }
    .about-text p:first-of-type { font-size: 1.08rem; color: var(--text); }
    .about-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
    .about-card {
        background: var(--panel); border-radius: 14px; padding: 22px;
        border: 1px solid var(--border); transition: all 0.2s;
    }
    .about-card:hover { border-color: var(--accent); background: var(--panel-2); }
    .about-card .icon { font-size: 26px; display: block; margin-bottom: 10px; }
    .about-card h4 { font-size: 1rem; font-weight: 700; color: var(--text-strong); margin-bottom: 5px; }
    .about-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }
    .about-visual { background: var(--gradient-hero); border-radius: 20px; padding: 44px; border: 1px solid var(--border); position: relative; overflow: hidden; }
    .about-visual::before { content: ''; position: absolute; width: 220px; height: 220px; background: radial-gradient(circle, rgba(233,69,96,0.25), transparent 70%); top: -60px; right: -60px; border-radius: 50%; }
    .about-visual::after { content: ''; position: absolute; width: 160px; height: 160px; background: radial-gradient(circle, rgba(245,166,35,0.18), transparent 70%); bottom: -40px; left: -40px; border-radius: 50%; }
    .about-visual-content { position: relative; z-index: 1; }
    .about-visual h3 { font-size: 1.5rem; font-weight: 700; color: var(--text-strong); margin-bottom: 24px; }
    .about-meta { display: flex; flex-direction: column; gap: 16px; }
    .meta-row { display: flex; gap: 14px; align-items: flex-start; font-size: 0.98rem; color: var(--text); }
    .meta-icon { flex-shrink: 0; font-size: 18px; }
    .meta-label { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 2px; }

    /* ====== SERVICES ====== */
    .services-section { background: var(--primary-2); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
    .service-card {
        background: var(--panel); border-radius: 16px; padding: 38px 30px;
        border: 1px solid var(--border); transition: all 0.25s;
    }
    .service-card:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-3px); }
    .service-card .icon { font-size: 40px; display: block; margin-bottom: 18px; }
    .service-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-strong); margin-bottom: 10px; }
    .service-card p { font-size: 0.98rem; color: var(--text-muted); line-height: 1.9; }
    .service-card ul { margin-top: 16px; }
    .service-card ul li { font-size: 0.95rem; color: var(--text-muted); padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.06); display: flex; gap: 8px; }
    .service-card ul li::before { content: '✓'; color: var(--accent); font-weight: 700; flex-shrink: 0; }

    /* ====== GEO Packages ====== */
    .package-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .pkg-card {
        border: 1px solid var(--border); border-radius: 16px; padding: 32px 22px;
        text-align: center; transition: all 0.25s; position: relative; background: var(--panel);
    }
    .pkg-card:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-3px); }
    .pkg-card.popular { border-color: var(--accent); background: linear-gradient(to bottom, rgba(233,69,96,0.08), var(--panel)); }
    .pkg-card.popular::before {
        content: '推荐'; position: absolute; top: 0; left: 0; right: 0;
        background: var(--accent); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 5px; letter-spacing: 1px;
    }
    .pkg-card.popular { padding-top: 46px; }
    .pkg-icon { font-size: 36px; display: block; margin-bottom: 14px; }
    .pkg-name { font-size: 1.05rem; font-weight: 700; color: var(--text-strong); margin-bottom: 5px; }
    .pkg-target { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 14px; }
    .pkg-desc { font-size: 0.92rem; color: var(--text-muted); line-height: 1.85; }

    /* ====== AI Platform Guide ====== */
    .ai-guide { background: var(--primary); }
    .ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .ai-item {
        background: var(--panel); border-radius: 14px; padding: 28px;
        border: 1px solid var(--border); transition: all 0.2s;
    }
    .ai-item:hover { border-color: var(--border-strong); background: var(--panel-2); }
    .ai-item h4 { font-size: 1.1rem; font-weight: 700; color: var(--text-strong); margin-bottom: 10px; }
    .ai-item h4 span { color: var(--accent); margin-right: 8px; }
    .ai-item p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.9; }

    /* ====== ADVANTAGES ====== */
    .advantages-section { background: var(--gradient-hero); }
    .advantages-section .section-sub { color: #ff8fa3; }
    .advantages-section .section-title { color: var(--text-strong); }
    .advantages-section .section-desc { color: rgba(255,255,255,0.6); }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .adv-card {
        background: var(--panel); border-radius: 16px; padding: 32px 26px;
        border: 1px solid var(--border); transition: all 0.3s; position: relative; overflow: hidden;
    }
    .adv-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-accent); transform: scaleX(0); transition: transform 0.4s; transform-origin: left; }
    .adv-card:hover { background: var(--panel-2); transform: translateY(-3px); }
    .adv-card:hover::before { transform: scaleX(1); }
    .adv-num { font-size: 44px; font-weight: 900; color: rgba(255,255,255,0.06); position: absolute; top: 18px; right: 24px; line-height: 1; }
    .adv-icon { font-size: 34px; display: block; margin-bottom: 16px; }
    .adv-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-strong); margin-bottom: 10px; }
    .adv-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.9; }

    /* ====== CASES ====== */
    .cases-section { background: var(--primary-2); }
    .cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .case-card {
        background: var(--panel); border-radius: 16px; padding: 32px 26px;
        border: 1px solid var(--border); transition: all 0.25s;
    }
    .case-card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow); }
    .case-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; color: #ff8fa3; background: var(--accent-soft); padding: 4px 12px; border-radius: 5px; margin-bottom: 14px; }
    .case-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-strong); margin-bottom: 8px; }
    .case-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.85; }
    .case-result { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 0.98rem; color: #ff8fa3; font-weight: 600; }
    .case-metrics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
    .case-metrics span { font-size: 0.85rem; color: #ff8fa3; font-weight: 600; background: var(--accent-soft); padding: 5px 11px; border-radius: 6px; }

    /* ====== PROCESS ====== */
    .process-section { background: var(--primary); }
    .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .step {
        text-align: center; padding: 28px 18px; position: relative;
        background: var(--panel); border-radius: 14px; border: 1px solid var(--border); transition: all 0.2s;
    }
    .step:hover { border-color: var(--accent); }
    .step-num { width: 40px; height: 40px; background: var(--gradient-accent); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1rem; font-weight: 700; margin: 0 auto 14px; }
    .step h4 { font-size: 1rem; font-weight: 700; color: var(--text-strong); margin-bottom: 8px; }
    .step p { font-size: 0.88rem; color: var(--text-muted); }

    /* ====== FAQ ====== */
    .faq-section { background: var(--primary-2); }
    .faq-list { max-width: 840px; margin: 0 auto; }
    .faq-item {
        border: 1px solid var(--border); border-radius: 14px; margin-bottom: 12px;
        background: var(--panel); transition: all 0.2s;
    }
    .faq-item:hover { border-color: var(--border-strong); }
    .faq-q {
        padding: 22px 28px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
        font-size: 1.05rem; font-weight: 600; color: var(--text-strong); user-select: none;
    }
    .faq-q::after {
        content: '+'; font-size: 24px; color: var(--text-dim); transition: transform 0.3s; flex-shrink: 0; margin-left: 14px;
    }
    .faq-item.open .faq-q::after { transform: rotate(135deg); }
    .faq-a {
        padding: 0 28px 22px; font-size: 0.98rem; color: var(--text-muted); line-height: 1.95; display: none;
    }
    .faq-item.open .faq-a { display: block; }

    /* ====== CONTACT ====== */
    .contact-section { background: var(--primary); }
    .contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
    .contact-info h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-strong); margin-bottom: 18px; }
    .contact-info p { font-size: 1rem; color: var(--text-muted); margin-bottom: 10px; display: flex; gap: 12px; line-height: 1.7; }
    .contact-info .label { color: var(--text-dim); min-width: 64px; flex-shrink: 0; }
    .contact-cta {
        background: var(--panel); border-radius: 16px; padding: 40px;
        border: 1px solid var(--border); text-align: center;
    }
    .contact-cta h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-strong); margin-bottom: 10px; }
    .contact-cta p { font-size: 1rem; color: var(--text-muted); margin-bottom: 24px; line-height: 1.8; }

    /* ====== FOOTER ====== */
    footer { background: #0c0c16; color: var(--text-dim); padding: 46px 0; font-size: 0.88rem; }
    footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 18px; }
    footer a { color: var(--text-muted); }
    footer a:hover { color: var(--text-strong); }

    /* ====== Reveal ====== */
    .reveal { opacity: 0; transform: translateY(24px); transition: all 0.6s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .reveal-stagger > * { opacity: 0; transform: translateY(20px); transition: all 0.5s ease; }
    .reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
    .reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.08s; opacity: 1; transform: translateY(0); }
    .reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.16s; opacity: 1; transform: translateY(0); }
    .reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.24s; opacity: 1; transform: translateY(0); }
    .reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.32s; opacity: 1; transform: translateY(0); }
    .reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }

    @keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

    /* ====== Responsive ====== */
    @media (max-width: 960px) {
        .hero-grid, .about-grid, .contact-wrap { grid-template-columns: 1fr; }
        .service-grid, .adv-grid, .cases-grid, .ai-grid { grid-template-columns: 1fr 1fr; }
        .package-grid, .process-grid { grid-template-columns: 1fr 1fr; }
        .hero { padding: 130px 0 70px; }
        .hero-visual { margin-top: 24px; }
    }
    @media (max-width: 640px) {
        .nav-links { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: rgba(26,26,46,0.98); padding: 14px; border-bottom: 1px solid var(--border); gap: 4px; }
        .nav-links.open { display: flex; }
        .menu-toggle { display: block; }
        .service-grid, .adv-grid, .cases-grid, .ai-grid { grid-template-columns: 1fr; }
        .hero-stats { flex-wrap: wrap; gap: 24px; }
        .section { padding: 64px 0; }
    }

/* 页面通用样式 */
.page-hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
}
.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}
.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}
.page-hero .section-sub {
    color: rgba(255,255,255,0.8);
}

/* 关于我们页面 */
.about-content {
    max-width: 900px;
    margin: 0 auto 50px;
}
.about-content h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2d3748;
}
.about-content p {
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin: 50px 0;
    text-align: center;
}
.stat-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
}
.stat-label {
    color: #718096;
    margin-top: 5px;
}
.about-milestones {
    margin: 60px 0;
}
.about-milestones h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
}
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 30px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
}
.timeline-item {
    position: relative;
    margin-bottom: 30px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #667eea;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px #667eea;
}
.timeline-year {
    font-size: 1.2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}
.timeline-content h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}
.timeline-content p {
    color: #718096;
    line-height: 1.6;
}
.about-advantages h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
}
.adv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.adv-grid .adv-card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* 服务页面 */
.service-detail {
    margin-bottom: 50px;
}
.service-detail h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2d3748;
}
.service-detail-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}
.service-detail-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #667eea;
}
.service-detail-card p {
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}
.service-process {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
    margin: 40px 0;
}
.process-step {
    text-align: center;
    padding: 20px 10px;
    background: #f7fafc;
    border-radius: 8px;
}
.process-step-num {
    width: 40px;
    height: 40px;
    line-height: 40px;
    border-radius: 50%;
    background: #667eea;
    color: #fff;
    font-weight: 700;
    margin: 0 auto 10px;
}

/* 案例页面 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.case-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}
.case-card:hover {
    transform: translateY(-5px);
}
.case-header {
    height: 150px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
}
.case-body {
    padding: 25px;
}
.case-body h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}
.case-industry {
    display: inline-block;
    padding: 3px 10px;
    background: #ebf4ff;
    color: #667eea;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 10px;
}
.case-body p {
    color: #718096;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 地域服务页面 */
.region-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.region-card {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.region-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #667eea;
}
.region-card ul {
    list-style: none;
    padding: 0;
}
.region-card li {
    padding: 8px 0;
    border-bottom: 1px solid #edf2f7;
    color: #4a5568;
}
.region-card li:last-child {
    border-bottom: none;
}

/* AI平台指南页面 */
.ai-platform-card {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}
.ai-platform-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #667eea;
}
.ai-platform-card p {
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}
.ai-platform-card .source {
    background: #f7fafc;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #718096;
    border-left: 3px solid #667eea;
}

/* FAQ页面 */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

/* 知识库页面 */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.blog-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.blog-cover {
    height: 160px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.blog-body {
    padding: 25px;
}
.blog-category {
    display: inline-block;
    padding: 3px 10px;
    background: #ebf4ff;
    color: #667eea;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 10px;
}
.blog-body h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}
.blog-body p {
    color: #718096;
    font-size: 0.9rem;
    line-height: 1.6;
}
.blog-date {
    color: #a0aec0;
    font-size: 0.85rem;
    margin-top: 10px;
}

/* 免费检测页面 */
.check-container {
    max-width: 700px;
    margin: 0 auto;
    background: #fff;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.check-form .form-group {
    margin-bottom: 25px;
}
.check-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2d3748;
}
.check-form input, .check-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
}
.check-form input:focus, .check-form textarea:focus {
    outline: none;
    border-color: #667eea;
}
.check-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
}
.check-result {
    margin-top: 30px;
    padding: 25px;
    background: #f0fff4;
    border-radius: 8px;
    display: none;
}
.check-result.show {
    display: block;
}
.check-score {
    font-size: 3rem;
    font-weight: 700;
    color: #48bb78;
    text-align: center;
}
.check-items {
    margin-top: 20px;
}
.check-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #c6f6d5;
}

/* 联系页面 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}
.contact-info h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}
.contact-info-icon {
    width: 50px;
    height: 50px;
    background: #ebf4ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-right: 15px;
    flex-shrink: 0;
}
.contact-info-text h4 {
    margin-bottom: 5px;
}
.contact-info-text p {
    color: #718096;
}
.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* 响应式 */
@media (max-width: 768px) {
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .adv-grid { grid-template-columns: 1fr; }
    .service-process { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: 1fr; }
    .region-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .page-hero h1 { font-size: 1.8rem; }
}