/* ============================================
   渠道联盟 GEO信源系统 - 统一前端样式
   企业AI信源中心聚合平台
   ============================================ */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-lighter: #818cf8;
    --secondary: #8b5cf6;
    --accent: #22d3ee;
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 60%, #8b5cf6 100%);
    --gradient-soft: linear-gradient(135deg, rgba(79,70,229,.08), rgba(139,92,246,.08));
    --dark: #0f172a;
    --dark-2: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --bg-blue: #eef2ff;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 20px rgba(15,23,42,.06);
    --shadow-lg: 0 20px 50px rgba(15,23,42,.10);
    --shadow-primary: 0 8px 24px rgba(79,70,229,.28);
    --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-light); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-lg { max-width: 1320px; }

/* ========== 导航栏 ========== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226,232,240,.7);
    transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(15,23,42,.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--gradient);
    color: #fff; font-weight: 700; font-size: 19px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-primary);
}
.logo-text { font-size: 19px; font-weight: 700; color: var(--dark); }
.logo-text em { font-style: normal; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
    padding: 8px 16px; border-radius: 8px; font-size: 14.5px; font-weight: 500;
    color: var(--text); position: relative;
}
.site-nav a:hover, .site-nav a.active { color: var(--primary); background: var(--bg-blue); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 11px 24px; border-radius: 10px; font-size: 14.5px; font-weight: 600;
    cursor: pointer; border: none; transition: all .25s; white-space: nowrap;
}
.btn-primary {
    background: var(--gradient); color: #fff !important;
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(79,70,229,.4); }
.btn-outline {
    background: transparent; color: var(--primary) !important;
    border: 1.5px solid var(--primary-light);
}
.btn-outline:hover { background: var(--bg-blue); transform: translateY(-2px); }
.btn-lg { padding: 14px 32px; font-size: 15.5px; border-radius: 12px; }
.btn-sm { padding: 8px 16px; font-size: 13.5px; border-radius: 8px; }
.btn-white { background: #fff; color: var(--primary) !important; box-shadow: 0 8px 24px rgba(15,23,42,.15); }
.btn-white:hover { transform: translateY(-2px); }

/* 移动端菜单按钮 */
.menu-toggle {
    display: none; width: 42px; height: 42px; border: 1px solid var(--border);
    border-radius: 10px; background: #fff; cursor: pointer; align-items: center;
    justify-content: center; flex-direction: column; gap: 5px;
}
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--dark); border-radius: 2px; transition: .3s; }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Hero 区域 ========== */
.hero {
    position: relative; overflow: hidden;
    padding: 110px 0 90px;
    background:
        radial-gradient(1000px 500px at 85% -10%, rgba(139,92,246,.14), transparent 60%),
        radial-gradient(800px 420px at 10% 10%, rgba(34,211,238,.12), transparent 55%),
        linear-gradient(180deg, #f5f3ff 0%, #eef2ff 30%, #ffffff 100%);
}
.hero::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image: linear-gradient(rgba(99,102,241,.05) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(99,102,241,.05) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(600px 400px at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(600px 400px at 50% 30%, #000 30%, transparent 75%);
}
.hero .container { position: relative; z-index: 2; text-align: center; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 18px; border-radius: 100px;
    background: rgba(255,255,255,.8); border: 1px solid rgba(99,102,241,.2);
    font-size: 13px; font-weight: 600; color: var(--primary);
    box-shadow: 0 4px 16px rgba(79,70,229,.08);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--secondary); animation: pulse 1.8s infinite; }
.hero h1 {
    font-size: 52px; font-weight: 800; color: var(--dark); line-height: 1.25;
    margin: 26px auto 20px; max-width: 860px; letter-spacing: -1px;
}
.hero h1 .gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-sub { font-size: 17.5px; color: var(--text-light); max-width: 760px; margin: 0 auto 26px; line-height: 1.9; }
.hero-cta { display: flex; justify-content: center; gap: 16px; margin-bottom: 34px; flex-wrap: wrap; }
.hero-flow {
    max-width: 1000px; margin: 0 auto; padding: 22px 28px;
    background: rgba(255,255,255,.75); border: 1px solid rgba(226,232,240,.9);
    border-radius: var(--radius); backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}
.hero-flow-items { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.flow-item { flex: 1; min-width: 120px; padding: 8px 14px; text-align: center; }
.flow-item .fi-name { font-size: 14.5px; font-weight: 700; color: var(--dark); }
.flow-item .fi-sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.flow-arrow { color: var(--primary-lighter); font-size: 18px; flex-shrink: 0; }
.hero-brand {
    margin-top: 34px; display: flex; align-items: center; justify-content: center; gap: 14px;
    opacity: .85;
}
.hero-brand .brand-logo {
    width: 44px; height: 44px; border-radius: 12px; background: var(--gradient);
    display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 20px;
    box-shadow: var(--shadow-primary);
}
.hero-brand .brand-text { text-align: left; }
.hero-brand .bt-1 { font-size: 18px; font-weight: 700; color: var(--dark); letter-spacing: 2px; }
.hero-brand .bt-2 { font-size: 11.5px; color: var(--text-muted); letter-spacing: .5px; }

/* ========== 通用区块 ========== */
.section { padding: 90px 0; }
.section-soft { background: var(--bg-soft); }
.section-blue { background: var(--bg-blue); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.section-head .section-tag {
    display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary);
    background: rgba(99,102,241,.1); padding: 5px 14px; border-radius: 100px; margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-head h2 { font-size: 34px; font-weight: 800; color: var(--dark); margin-bottom: 14px; letter-spacing: -.5px; }
.section-head .section-desc { font-size: 16px; color: var(--text-light); line-height: 1.8; }
.section-head .en-title {
    display: block; font-size: 13px; letter-spacing: 3px; color: var(--text-muted);
    text-transform: uppercase; margin-top: 8px; font-weight: 500;
}

/* ========== 核心理念 ========== */
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.concept-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px 30px; transition: all .3s; position: relative; overflow: hidden;
}
.concept-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--gradient); transform: scaleX(0); transform-origin: left; transition: transform .35s;
}
.concept-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.concept-card:hover::before { transform: scaleX(1); }
.concept-icon {
    width: 54px; height: 54px; border-radius: 14px; margin-bottom: 20px;
    background: var(--gradient-soft); display: flex; align-items: center; justify-content: center;
    font-size: 24px; color: var(--primary);
}
.concept-card h3 { font-size: 20px; color: var(--dark); margin-bottom: 12px; font-weight: 700; }
.concept-card p { font-size: 14.5px; color: var(--text-light); line-height: 1.85; }

/* ========== 企业知识库地图 ========== */
.map-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 40px; }
.map-filter {
    padding: 8px 18px; border-radius: 100px; font-size: 13.5px; font-weight: 500;
    background: #fff; border: 1px solid var(--border); color: var(--text); cursor: pointer; transition: all .2s;
}
.map-filter:hover { border-color: var(--primary-light); color: var(--primary); }
.map-filter.active {
    background: var(--gradient); color: #fff; border-color: transparent;
    box-shadow: var(--shadow-primary);
}
.company-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.company-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 28px; transition: all .3s; position: relative;
}
.company-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(99,102,241,.3); }
.company-card .company-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.company-card .company-name { font-size: 18px; font-weight: 700; color: var(--dark); flex: 1; }
.company-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.company-tag {
    font-size: 12px; padding: 3px 10px; border-radius: 6px;
    background: var(--bg-blue); color: var(--primary); font-weight: 500;
}
.company-card .company-main { font-size: 14px; color: var(--text-light); margin-bottom: 16px; line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.company-stats { display: flex; gap: 22px; padding: 14px 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); margin-bottom: 16px; }
.company-stats .cs-item { display: flex; align-items: baseline; gap: 5px; }
.company-stats .cs-num { font-size: 22px; font-weight: 800; color: var(--dark); }
.company-stats .cs-num.highlight { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.company-stats .cs-label { font-size: 13px; color: var(--text-muted); }
.company-card .company-link { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; font-weight: 600; }
.company-card .company-link:hover { gap: 8px; }

/* ========== GEO对比 ========== */
.compare-wrap { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow); }
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 20px 24px; text-align: left; vertical-align: top; }
.compare-table thead th { font-size: 17px; font-weight: 700; }
.compare-table thead th:first-child { width: 20%; }
.compare-table th.old { background: #f1f5f9; color: var(--text-light); }
.compare-table th.new { background: var(--gradient); color: #fff; }
.compare-table tbody tr { border-top: 1px solid var(--border); }
.compare-table tbody td:first-child {
    width: 20%; font-weight: 600; color: var(--dark); background: #f8fafc; font-size: 14px;
}
.compare-table tbody td:last-child { background: rgba(99,102,241,.04); }
.compare-table tbody td { font-size: 14.5px; line-height: 1.8; }
.compare-table .tag-item { display: block; color: var(--text-light); font-size: 14px; }
.compare-table .tag-item strong { color: var(--dark); }
.compare-table .compare-check { color: var(--primary); font-weight: 700; }

/* ========== 建设流程 ========== */
.process-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.process-step {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 22px; text-align: center; position: relative; transition: all .3s;
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.process-num {
    width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 50%;
    background: var(--gradient-soft); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 800; border: 2px solid rgba(99,102,241,.2);
}
.process-step h3 { font-size: 17px; color: var(--dark); margin-bottom: 10px; }
.process-step p { font-size: 13px; color: var(--text-light); line-height: 1.8; }
.process-step::after {
    content: '→'; position: absolute; right: -17px; top: 50%; transform: translateY(-50%);
    color: var(--primary-lighter); font-size: 20px; z-index: 2; font-weight: 700;
}
.process-grid .process-step:last-child::after { display: none; }

/* ========== 平台集合 ========== */
.collection-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.collection-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 32px 20px; text-align: center; transition: all .3s; cursor: pointer; display: block;
    position: relative; overflow: hidden;
}
.collection-card::before {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
    background: var(--gradient); transform: scaleX(0); transition: transform .3s;
}
.collection-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.collection-card:hover::before { transform: scaleX(1); }
.collection-icon {
    width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px;
    background: var(--gradient); color: #fff; font-size: 26px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-primary);
}
.collection-card h3 { font-size: 17px; color: var(--dark); margin-bottom: 8px; }
.collection-card p { font-size: 13px; color: var(--text-muted); }

/* ========== FAQ ========== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    margin-bottom: 14px; overflow: hidden; transition: box-shadow .3s;
}
.faq-item.active { box-shadow: var(--shadow); border-color: rgba(99,102,241,.35); }
.faq-question {
    padding: 20px 24px; display: flex; align-items: center; justify-content: space-between;
    cursor: pointer; font-size: 16px; font-weight: 600; color: var(--dark); gap: 16px;
}
.faq-question .q-icon { color: var(--primary); font-weight: 700; }
.faq-question .chevron { transition: transform .3s; color: var(--text-muted); flex-shrink: 0; }
.faq-item.active .chevron { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
}
.faq-answer-inner { padding: 0 24px 22px 48px; color: var(--text-light); font-size: 14.5px; line-height: 1.9; }

/* ========== CTA表单 ========== */
.cta-section {
    position: relative; overflow: hidden;
    background:
        radial-gradient(800px 400px at 80% 0%, rgba(139,92,246,.2), transparent 60%),
        radial-gradient(700px 400px at 10% 100%, rgba(34,211,238,.15), transparent 55%),
        linear-gradient(135deg, #312e81 0%, #4f46e5 55%, #6d28d9 100%);
    padding: 100px 0;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(700px 450px at 50% 40%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(700px 450px at 50% 40%, #000 20%, transparent 75%);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-box {
    max-width: 900px; margin: 0 auto; background: rgba(255,255,255,.97);
    border-radius: 24px; padding: 50px 54px; box-shadow: 0 30px 80px rgba(15,23,42,.25);
}
.cta-box .section-head { margin-bottom: 36px; }
.cta-box .section-head h2 { color: var(--dark); }
.cta-box .section-head .section-desc { font-size: 15px; }
.cta-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cta-form-grid .full { grid-column: 1 / -1; }
.form-item label { display: block; font-size: 13.5px; font-weight: 600; color: var(--dark-2); margin-bottom: 7px; }
.form-item input, .form-item textarea {
    width: 100%; padding: 12px 16px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-size: 14px; font-family: inherit; transition: all .2s; background: #fff; color: var(--text);
}
.form-item input:focus, .form-item textarea:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
.form-item textarea { min-height: 90px; resize: vertical; }
.need-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.need-option {
    border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px;
    display: flex; align-items: center; gap: 10px; cursor: pointer; transition: all .2s; font-size: 14px;
}
.need-option:hover { border-color: var(--primary-light); }
.need-option input { width: 17px; height: 17px; accent-color: var(--primary); }
.need-option.checked { border-color: var(--primary); background: var(--bg-blue); color: var(--primary); font-weight: 500; }
.form-submit-row { display: flex; justify-content: center; margin-top: 26px; }
.form-tip { text-align: center; font-size: 12.5px; color: var(--text-muted); margin-top: 14px; }
.form-msg { text-align: center; padding: 14px; border-radius: 10px; margin-top: 16px; font-size: 14px; display: none; }
.form-msg.success { display: block; background: #ecfdf5; color: #059669; border: 1px solid #a7f3d0; }
.form-msg.error { display: block; background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }

/* ========== 页脚 ========== */
.site-footer { background: var(--dark); color: #94a3b8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .logo-text { color: #fff; font-size: 20px; }
.footer-brand .footer-desc { font-size: 14px; margin: 16px 0 20px; line-height: 1.8; color: #94a3b8; }
.footer-brand .footer-badge {
    display: inline-block; font-size: 12px; padding: 5px 12px; border-radius: 100px;
    background: rgba(255,255,255,.08); color: #c7d2fe; border: 1px solid rgba(255,255,255,.1);
}
.footer-col h4 { font-size: 15px; color: #fff; margin-bottom: 18px; font-weight: 600; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 28px; height: 2px; background: var(--gradient); }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul a { color: #94a3b8; font-size: 14px; }
.footer-col ul a:hover { color: #fff; }
.footer-contact li { font-size: 14px; margin-bottom: 12px; display: flex; gap: 8px; align-items: flex-start; }
.footer-contact .fc-icon { color: var(--primary-lighter); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; text-align: center;
    font-size: 13px; color: #64748b;
}
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

/* ========== 列表页通用 ========== */
.page-hero {
    position: relative; overflow: hidden; padding: 76px 0 56px; text-align: center;
    background:
        radial-gradient(700px 350px at 80% -20%, rgba(139,92,246,.15), transparent 60%),
        radial-gradient(600px 300px at 10% 0%, rgba(34,211,238,.12), transparent 55%),
        linear-gradient(180deg, #f5f3ff, #ffffff);
}
.page-hero h1 { font-size: 38px; font-weight: 800; color: var(--dark); margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--text-light); max-width: 640px; margin: 0 auto; }
.page-hero .breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; }
.page-hero .breadcrumb a { color: var(--primary); }

/* 筛选栏 */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 16px 20px; margin-bottom: 34px;
}

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 44px; flex-wrap: wrap; }
.pagination a, .pagination span {
    min-width: 40px; height: 40px; padding: 0 14px; display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border); border-radius: 10px; font-size: 14px; color: var(--text); background: #fff; transition: .2s;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--gradient); color: #fff; border-color: transparent; }

/* 空状态 */
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state .empty-icon { font-size: 56px; margin-bottom: 16px; opacity: .4; }
.empty-state p { color: var(--text-muted); font-size: 15px; }

/* 产品库/行业库/FAQ库/案例库卡片 */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.industry-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px; text-align: center; transition: all .3s; display: block;
}
.industry-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(99,102,241,.3); }
.industry-card .ic-icon {
    width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 16px;
    background: var(--gradient-soft); color: var(--primary); font-size: 24px;
    display: flex; align-items: center; justify-content: center;
}
.industry-card h3 { font-size: 18px; color: var(--dark); margin-bottom: 8px; }
.industry-card p { font-size: 13.5px; color: var(--text-muted); }

.product-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; transition: all .3s; display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.product-card .pc-img { height: 190px; background: #f1f5f9; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-card .pc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-card:hover .pc-img img { transform: scale(1.05); }
.product-card .pc-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.product-card .pc-cat { font-size: 12px; color: var(--primary); background: var(--bg-blue); display: inline-block; padding: 3px 10px; border-radius: 6px; align-self: flex-start; margin-bottom: 10px; font-weight: 500; }
.product-card h3 { font-size: 15.5px; color: var(--dark); margin-bottom: 10px; line-height: 1.6; height: 48px; overflow: hidden; }
.product-card .pc-price { color: #ef4444; font-weight: 700; font-size: 16px; margin-bottom: 12px; }
.product-card .pc-meta { font-size: 12.5px; color: var(--text-muted); padding-top: 12px; border-top: 1px dashed var(--border); display: flex; justify-content: space-between; }

.faq-collection-item {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 22px 26px; margin-bottom: 14px; transition: all .25s;
}
.faq-collection-item:hover { box-shadow: var(--shadow); border-color: rgba(99,102,241,.3); }
.faq-collection-item .fci-q { font-size: 15.5px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.faq-collection-item .fci-q .fci-icon { color: var(--primary); }
.faq-collection-item .fci-a { font-size: 14px; color: var(--text-light); line-height: 1.8; }
.faq-collection-item .fci-company { font-size: 12.5px; color: var(--text-muted); margin-top: 10px; }
.faq-collection-item .fci-company a { color: var(--primary); }

.case-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; transition: all .3s; display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.case-card .case-cover { height: 190px; background: var(--gradient-soft); position: relative; overflow: hidden; }
.case-card .case-cover img { width: 100%; height: 100%; object-fit: cover; }
.case-card .case-body { padding: 22px; flex: 1; }
.case-card .case-body h3 { font-size: 16px; color: var(--dark); margin-bottom: 10px; }
.case-card .case-body p { font-size: 13.5px; color: var(--text-light); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.case-card .case-footer { padding: 14px 22px; border-top: 1px dashed var(--border); display: flex; justify-content: space-between; font-size: 13px; color: var(--text-muted); }

/* ========== 动画 ========== */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .4; transform: scale(.8); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(26px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp .7s ease both; }

/* 浮动光球 */
.float-orb { position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; animation: floatOrb 8s ease-in-out infinite; }
.float-orb.o1 { width: 260px; height: 260px; background: rgba(99,102,241,.2); top: -80px; right: 10%; }
.float-orb.o2 { width: 200px; height: 200px; background: rgba(34,211,238,.18); bottom: -60px; left: 8%; animation-delay: -4s; }
@keyframes floatOrb {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-24px); }
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .process-grid { grid-template-columns: repeat(3, 1fr); }
    .process-step::after { display: none; }
    .collection-grid { grid-template-columns: repeat(3, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .site-nav {
        position: fixed; top: 68px; left: 0; right: 0; background: #fff;
        flex-direction: column; padding: 16px 20px 24px; gap: 4px;
        border-bottom: 1px solid var(--border); box-shadow: 0 20px 40px rgba(15,23,42,.1);
        transform: translateY(-120%); transition: transform .35s; z-index: 99;
    }
    .site-nav.open { transform: translateY(0); }
    .site-nav a { width: 100%; padding: 12px 14px; font-size: 15px; }
    .header-actions .btn-outline { display: none; }
    .menu-toggle { display: flex; }
    .hero { padding: 70px 0 60px; }
    .hero h1 { font-size: 32px; }
    .hero-sub { font-size: 15.5px; }
    .hero-cta .btn { padding: 12px 20px; }
    .flow-arrow { display: none; }
    .hero-flow-items { gap: 8px; }
    .flow-item { min-width: 100px; }
    .section { padding: 60px 0; }
    .section-head h2 { font-size: 26px; }
    .concept-grid { grid-template-columns: 1fr; }
    .company-grid { grid-template-columns: 1fr; }
    .compare-table thead th { font-size: 15px; }
    .compare-table th, .compare-table td { padding: 14px 14px; }
    .compare-table tbody td:first-child, .compare-table thead th:first-child { width: 32%; }
    .process-grid { grid-template-columns: 1fr 1fr; }
    .collection-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-box { padding: 34px 22px; border-radius: 18px; }
    .cta-form-grid { grid-template-columns: 1fr; }
    .need-options { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .page-hero h1 { font-size: 28px; }
}

@media (max-width: 480px) {
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { width: 100%; }
    .process-grid { grid-template-columns: 1fr; }
    .collection-grid { grid-template-columns: 1fr 1fr; }
    .collection-card { padding: 22px 14px; }
}

/* ============================================
   登录 / 注册 模态框
   ============================================ */
.uc-modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(15, 23, 42, .55);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    animation: ucFadeIn .2s ease;
}
.uc-modal {
    position: relative; width: 100%; max-width: 420px;
    background: #fff; border-radius: 18px;
    box-shadow: 0 30px 70px rgba(15,23,42,.3);
    padding: 34px 30px 28px;
    max-height: 90vh; overflow-y: auto;
    animation: ucSlideUp .25s ease;
}
.uc-modal-close {
    position: absolute; top: 14px; right: 16px;
    width: 32px; height: 32px; border: none; border-radius: 50%;
    background: var(--bg-soft); color: var(--text-light);
    font-size: 16px; cursor: pointer; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s, color .2s;
}
.uc-modal-close:hover { background: #fee2e2; color: #ef4444; }
.uc-modal-tabs {
    display: flex; gap: 8px; background: var(--bg-soft);
    padding: 4px; border-radius: 12px; margin-bottom: 24px;
}
.uc-tab-btn {
    flex: 1; padding: 10px 0; border: none; border-radius: 9px;
    background: transparent; color: var(--text-light);
    font-size: 15px; font-weight: 600; cursor: pointer;
    transition: all .2s;
}
.uc-tab-btn.active { background: #fff; color: var(--primary); box-shadow: 0 2px 8px rgba(15,23,42,.08); }
.uc-modal-title { font-size: 20px; color: var(--dark); margin-bottom: 4px; }
.uc-modal-sub { font-size: 13.5px; color: var(--text-muted); margin-bottom: 20px; }
.uc-modal-field { margin-bottom: 16px; }
.uc-modal-field label { display: block; font-size: 13.5px; color: var(--text); font-weight: 600; margin-bottom: 6px; }
.uc-modal-field input {
    width: 100%; padding: 11px 14px; border: 1px solid var(--border);
    border-radius: 10px; font-size: 14px; color: var(--text);
    outline: none; transition: border-color .2s, box-shadow .2s; background: #fff;
}
.uc-modal-field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.uc-modal-btn {
    width: 100%; padding: 12px; margin-top: 6px; border: none; border-radius: 11px;
    background: var(--gradient); color: #fff; font-size: 15.5px; font-weight: 700;
    cursor: pointer; transition: opacity .2s, transform .15s;
    box-shadow: var(--shadow-primary);
}
.uc-modal-btn:hover { opacity: .92; }
.uc-modal-btn:active { transform: scale(.98); }
.uc-modal-btn:disabled { opacity: .6; cursor: not-allowed; }
.uc-modal-msg {
    padding: 10px 12px; border-radius: 8px; font-size: 13.5px;
    margin-bottom: 14px; display: none;
}
.uc-modal-msg.error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.uc-modal-msg.success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }

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

@media (max-width: 480px) {
    .uc-modal { padding: 26px 20px 22px; max-width: 100%; }
}