/* ============================================================
   卓研数据 · 蓝色科技主题（浅色）
   ============================================================ */
:root {
    --primary: #0a6cff;
    --primary-light: #4d9fff;
    --primary-dark: #0a4fd0;
    --accent: #00b8d9;
    --accent-soft: #d9f2fb;
    --bg: #f4f8ff;
    --bg-deep: #e8f0ff;
    --card: #ffffff;
    --text: #36486b;
    --text-muted: #6b7fa3;
    --text-heading: #0b2545;
    --border: #dbe7fb;
    --border-strong: #b3cbf2;
    --glow: rgba(10, 108, 255, 0.30);
    --shadow: 0 8px 30px rgba(43, 77, 145, 0.10);
    --shadow-hover: 0 14px 40px rgba(10, 108, 255, 0.18);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s ease;
    --hero-grad: linear-gradient(135deg, #0a6cff 0%, #1e9bff 55%, #38bdf8 100%);
    --hero-grad-deep: linear-gradient(135deg, #0849c9 0%, #0a6cff 50%, #1e9bff 100%);
    --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.max-wid { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-label {
    display: inline-block; font-size: 13px; letter-spacing: 4px; color: var(--primary);
    font-weight: 700; margin-bottom: 10px; text-transform: uppercase;
}
.section-label::before { content: ''; display: inline-block; width: 24px; height: 2px; background: var(--primary); vertical-align: middle; margin-right: 8px; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: 36px; color: var(--text-heading); font-weight: 700; }
.section-title p { color: var(--text-muted); margin-top: 12px; max-width: 640px; margin-inline: auto; }
.section { padding: 90px 0; }
.section-alt { background: var(--bg-deep); }

/* ---------- 科技背景装饰 ---------- */
.tech-bg { position: relative; }
.tech-bg::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(10,108,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10,108,255,0.06) 1px, transparent 1px);
    background-size: 42px 42px;
}
.grid-overlay {
    position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.14) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.14) 1px, transparent 1px);
    background-size: 44px 44px;
}
#particles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.particle {
    position: absolute; bottom: -10px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(77,159,255,0.25));
    width: 6px; height: 6px; opacity: 0; animation: floatUp linear infinite;
}
@keyframes floatUp {
    0% { transform: translateY(0); opacity: 0; }
    12% { opacity: 0.9; }
    85% { opacity: 0.5; }
    100% { transform: translateY(-110vh); opacity: 0; }
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600;
    border: 1px solid transparent; transition: var(--transition); white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #1e9bff);
    color: #fff; box-shadow: 0 8px 24px rgba(10,108,255,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(10,108,255,0.45); }
.btn-outline {
    background: rgba(255,255,255,0.95); color: var(--primary);
    border-color: var(--primary); box-shadow: 0 6px 20px rgba(10,108,255,0.15);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.btn-ghost { border-color: rgba(255,255,255,0.6); color: #fff; background: rgba(255,255,255,0.12); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: #fff; color: var(--primary); transform: translateY(-3px); }
.btn-sm { padding: 9px 20px; font-size: 13px; }

/* ---------- Header ---------- */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.88); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border); transition: var(--transition);
}
.header.scrolled { background: rgba(255,255,255,0.97); box-shadow: var(--shadow); }
.header-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: var(--text-heading); }
.logo-icon {
    width: 42px; height: 42px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary), #38bdf8); color: #fff; font-size: 15px; font-weight: 800;
    box-shadow: 0 6px 16px rgba(10,108,255,0.4); letter-spacing: 1px;
}
.logo span { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 6px; }
.nav-item { position: relative; }
.nav-link {
    display: inline-flex; align-items: center; gap: 4px; padding: 10px 14px;
    color: var(--text-heading); font-size: 15px; font-weight: 500; border-radius: 8px;
}
.nav-link i { font-style: normal; font-size: 11px; color: var(--text-muted); transition: var(--transition); }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 700; }
.nav-link.active::after { content: ''; display: block; height: 2px; background: var(--primary); border-radius: 2px; margin-top: 2px; }
.dropdown {
    position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(12px);
    min-width: 190px; background: #fff; border: 1px solid var(--border); border-radius: 12px;
    box-shadow: var(--shadow-hover); padding: 8px; opacity: 0; visibility: hidden; transition: var(--transition);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(6px); }
.dropdown a { display: block; padding: 10px 14px; border-radius: 8px; font-size: 14px; color: var(--text); }
.dropdown a:hover { background: var(--bg-deep); color: var(--primary); }

/* 移动端 */
.mobile-menu-btn { display: none; width: 42px; height: 42px; border: 1px solid var(--border); border-radius: 10px; background: #fff; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.mobile-menu-btn span { display: block; width: 20px; height: 2px; background: var(--text-heading); border-radius: 2px; transition: var(--transition); }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
    position: fixed; inset: 0; z-index: 999; background: rgba(244,248,255,0.98);
    backdrop-filter: blur(10px); padding: 90px 24px 40px; overflow-y: auto;
    opacity: 0; visibility: hidden; transition: var(--transition);
}
.mobile-nav.open { opacity: 1; visibility: visible; }
.mobile-nav a { display: block; padding: 14px 8px; font-size: 17px; color: var(--text-heading); font-weight: 600; border-bottom: 1px solid var(--border); }
.mobile-nav a:active, .mobile-nav a:hover { color: var(--primary); }
.mobile-nav .sub-group { padding-left: 18px; }
.mobile-nav .sub-group a { font-size: 15px; font-weight: 400; color: var(--text-muted); }

/* ---------- 首页 Hero 轮播 ---------- */
.hero-slider { position: relative; height: 100vh; min-height: 620px; max-height: 860px; overflow: hidden; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.2s ease; }
.hero-slide.active { opacity: 1; }
.hero-bg {
    position: absolute; inset: 0; background-size: cover; background-position: center;
    background-image: linear-gradient(135deg, rgba(8,73,201,0.82) 0%, rgba(10,108,255,0.55) 50%, rgba(56,189,248,0.35) 100%);
}
.hero-content {
    position: relative; z-index: 3; height: 100%; display: flex; flex-direction: column;
    justify-content: center; align-items: center; text-align: center; color: #fff; padding: 0 24px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; border-radius: 50px;
    background: rgba(255,255,255,0.16); border: 1px solid rgba(255,255,255,0.4);
    font-size: 13px; letter-spacing: 3px; backdrop-filter: blur(6px); margin-bottom: 26px;
}
.hero-content h1 { font-size: 56px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; text-shadow: 0 4px 24px rgba(8,73,201,0.35); }
.hero-content h1 em { font-style: normal; color: #7df3ff; }
.hero-content p { font-size: 18px; max-width: 720px; opacity: 0.95; margin-bottom: 36px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.hero-stats { display: flex; gap: 48px; margin-top: 56px; flex-wrap: wrap; justify-content: center; }
.hero-stat { text-align: center; }
.hero-stat b { display: block; font-size: 34px; font-weight: 800; color: #fff; }
.hero-stat span { font-size: 13px; opacity: 0.85; letter-spacing: 1px; }
.hero-dots { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.hero-dots button { width: 12px; height: 12px; border-radius: 50%; border: 2px solid rgba(255,255,255,0.7); background: transparent; padding: 0; }
.hero-dots button.active { background: #fff; border-color: #fff; box-shadow: 0 0 12px rgba(255,255,255,0.8); }
.hero-arrows button {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
    width: 52px; height: 52px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.12); color: #fff; font-size: 22px; backdrop-filter: blur(6px); transition: var(--transition);
}
.hero-arrows button:hover { background: #fff; color: var(--primary); }
.hero-prev { left: 30px; }
.hero-next { right: 30px; }

/* ---------- 首页 About 模块 ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.about-slogan { font-size: 24px; font-weight: 700; color: var(--text-heading); line-height: 1.6; margin-bottom: 20px; }
.about-slogan em { color: var(--primary); font-style: normal; }
.about-left p { color: var(--text-muted); margin-bottom: 16px; }
.about-more { margin-top: 20px; }
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.stat-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 14px; text-align: center; box-shadow: var(--shadow); transition: var(--transition);
}
.stat-item:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: var(--shadow-hover); }
.stat-item b { display: block; font-size: 30px; color: var(--primary); font-weight: 800; }
.stat-item span { font-size: 13px; color: var(--text-muted); }
.about-visual { position: relative; min-height: 420px; }
.about-visual-img {
    position: absolute; inset: 0; border-radius: var(--radius); background-size: cover; background-position: center;
    border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover); overflow: hidden;
}
.about-visual-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(10,108,255,0.18), rgba(255,255,255,0.05)); }
.orbit-ring {
    position: absolute; border-radius: 50%; border: 2px dashed rgba(10,108,255,0.35);
}
.orbit-ring.r1 { inset: -70px -70px auto auto; width: 320px; height: 320px; }
.orbit-ring.r2 { inset: auto auto -90px -90px; width: 260px; height: 260px; }
.orbit-ring.r3 { inset: 20% auto auto 10%; width: 190px; height: 190px; }
.orbit-float { position: absolute; width: 56px; height: 56px; border-radius: 16px; background: #fff; border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover); display: flex; align-items: center; justify-content: center; font-size: 24px; animation: float 4s ease-in-out infinite; }
.orbit-float.f1 { top: 12%; right: 12%; }
.orbit-float.f2 { bottom: 16%; left: 6%; animation-delay: 1.2s; }
.orbit-float.f3 { top: 42%; right: 2%; animation-delay: 2s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* ---------- 通用卡片网格 ---------- */
.omni-grid, .feature-grid, .overseas-grid, .app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.omni-card, .feature-card, .overseas-card, .app-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 34px 28px; transition: var(--transition); position: relative; overflow: hidden;
}
.omni-card::before, .feature-card::before, .overseas-card::before, .app-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent)); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.omni-card:hover, .feature-card:hover, .overseas-card:hover, .app-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.omni-card:hover::before, .feature-card:hover::before, .overseas-card:hover::before, .app-card:hover::before { transform: scaleX(1); }
.omni-icon, .feature-icon, .overseas-icon, .app-icon {
    width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
    font-size: 28px; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); margin-bottom: 20px;
}
.omni-card h3, .feature-card h3, .overseas-card h3, .app-card h3 { font-size: 19px; color: var(--text-heading); margin-bottom: 12px; }
.omni-card p, .feature-card p, .overseas-card p, .app-card p { font-size: 14px; color: var(--text-muted); }
.omni-card ul { margin-top: 12px; }
.omni-card ul li { font-size: 13px; color: var(--text-muted); padding: 4px 0 4px 16px; position: relative; }
.omni-card ul li::before { content: '▸'; position: absolute; left: 0; color: var(--primary); }

/* ---------- 案例 ---------- */
.case-tabs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.case-tabs button {
    padding: 10px 22px; border-radius: 50px; border: 1px solid var(--border-strong);
    background: #fff; color: var(--text); font-size: 14px; transition: var(--transition);
}
.case-tabs button:hover { border-color: var(--primary); color: var(--primary); }
.case-tabs button.active { background: linear-gradient(135deg, var(--primary), #1e9bff); color: #fff; border-color: transparent; box-shadow: 0 6px 18px rgba(10,108,255,0.3); }
.case-panel { display: none; }
.case-panel.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.case-card {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition);
}
.case-card:hover { box-shadow: var(--shadow-hover); border-color: var(--primary); }
.case-img { min-height: 340px; background-size: cover; background-position: center; }
.case-info { padding: 44px; }
.case-tag { display: inline-block; padding: 5px 14px; border-radius: 50px; background: var(--accent-soft); color: var(--primary); font-size: 12px; font-weight: 700; margin-bottom: 16px; }
.case-info h3 { font-size: 26px; color: var(--text-heading); margin-bottom: 14px; }
.case-info p { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.case-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 24px; }
.case-points span { font-size: 13px; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }
.case-more { color: var(--primary); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.case-more:hover { gap: 12px; }

/* 案例列表页 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    transition: var(--transition); display: block;
}
.case-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.case-item-img { height: 210px; background-size: cover; background-position: center; position: relative; }
.case-item-img .case-tag { position: absolute; top: 16px; left: 16px; background: rgba(255,255,255,0.92); }
.case-item-body { padding: 24px; }
.case-item-body h3 { font-size: 19px; color: var(--text-heading); margin-bottom: 8px; }
.case-item-body p { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 案例详情 */
.case-detail { display: grid; grid-template-columns: 1fr 1fr; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.case-detail-img { min-height: 520px; background-size: cover; background-position: center; }
.case-detail-info { padding: 50px; }
.case-detail-info h2 { color: var(--text-heading); font-size: 30px; margin-bottom: 20px; }
.case-detail-info > p { color: var(--text-muted); margin-bottom: 24px; }
.case-detail-info h3 { color: var(--primary); font-size: 18px; margin: 26px 0 12px; position: relative; padding-left: 14px; }
.case-detail-info h3::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 4px; background: linear-gradient(var(--primary), var(--accent)); }
.case-detail-info ul { list-style: none; }
.case-detail-info li { margin-bottom: 10px; padding-left: 20px; position: relative; color: var(--text); font-size: 15px; }
.case-detail-info li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #cfe0ff; margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a { color: #fff; }
.breadcrumb a:hover { opacity: 0.8; }

/* ---------- 合作伙伴 ---------- */
.partners-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.partner-logo {
    height: 92px; display: flex; align-items: center; justify-content: center; gap: 10px;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    font-weight: 800; font-size: 18px; color: var(--text-muted); transition: var(--transition); letter-spacing: 1px;
}
.partner-logo:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.partner-logo i { font-style: normal; width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, rgba(10,108,255,0.14), rgba(0,184,217,0.14)); display: flex; align-items: center; justify-content: center; font-size: 18px; }

/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 24px; text-align: center; transition: var(--transition); position: relative; overflow: hidden;
}
.team-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); transform: scaleX(0); transition: var(--transition); }
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.team-card:hover::after { transform: scaleX(1); }
.team-avatar {
    width: 84px; height: 84px; margin: 0 auto 16px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(10,108,255,0.14), rgba(0,184,217,0.14));
    border: 2px solid var(--border-strong); display: flex; align-items: center; justify-content: center; font-size: 36px;
}
.team-info h4 { color: var(--text-heading); font-size: 17px; }
.team-info .role { color: var(--primary); font-size: 13px; font-weight: 600; margin: 4px 0 10px; }
.team-info p { font-size: 13px; color: var(--text-muted); }

/* ---------- 咨询阶段 ---------- */
.stage-flow { display: flex; align-items: stretch; gap: 0; justify-content: center; flex-wrap: wrap; }
.stage-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 20px; text-align: center; width: 200px; transition: var(--transition); position: relative;
}
.stage-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.stage-num {
    width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; color: #fff;
    background: linear-gradient(135deg, var(--primary), #38bdf8); display: flex; align-items: center; justify-content: center;
    font-size: 17px; font-weight: 800; box-shadow: 0 6px 16px rgba(10,108,255,0.35);
}
.stage-item h4 { color: var(--text-heading); font-size: 15px; margin-bottom: 6px; }
.stage-item p { font-size: 12px; color: var(--text-muted); }
.stage-arrow { display: flex; align-items: center; color: var(--primary); font-size: 22px; padding: 0 10px; }

/* ---------- CTA ---------- */
.cta-box {
    position: relative; border-radius: 24px; overflow: hidden; padding: 70px 48px; text-align: center; color: #fff;
    background: var(--hero-grad-deep);
}
.cta-box h2 { font-size: 34px; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-box p { opacity: 0.92; margin-bottom: 30px; position: relative; z-index: 2; }
.cta-box .btn { position: relative; z-index: 2; }

/* ---------- Footer ---------- */
.footer {
    background: linear-gradient(160deg, #0a3da0 0%, #0b2545 100%);
    color: #dbe7fb; padding: 70px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer .logo { color: #fff; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; position: relative; padding-left: 12px; }
.footer h4::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 3px; background: var(--accent); border-radius: 3px; }
.footer p { font-size: 13px; line-height: 2; }
.footer a:hover { color: #7df3ff; }
.social-links { display: flex; gap: 10px; margin-top: 18px; }
.social-links a { width: 40px; height: 40px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.25); display: flex; align-items: center; justify-content: center; font-size: 17px; }
.social-links a:hover { background: #fff; color: var(--primary); border-color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(219,231,251,0.7); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 浮动工具 ---------- */
.float-tools { position: fixed; right: 22px; bottom: 30px; display: flex; flex-direction: column; gap: 10px; z-index: 800; }
.float-tools a {
    width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    background: #fff; border: 1px solid var(--border-strong); color: var(--primary); font-size: 19px;
    box-shadow: var(--shadow); transition: var(--transition);
}
.float-tools a:hover { background: linear-gradient(135deg, var(--primary), #1e9bff); color: #fff; transform: translateY(-4px); }

/* ============================================================
   内页通用
   ============================================================ */
.page-hero {
    position: relative; padding: 150px 0 90px; color: #fff; text-align: center; overflow: hidden;
    background: var(--hero-grad-deep);
}
.page-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.18; }
.page-hero .max-wid { position: relative; z-index: 2; }
.page-hero .section-label { color: #9ee6ff; }
.page-hero .section-label::before { background: #9ee6ff; }
.page-hero h1 { font-size: 46px; font-weight: 800; margin-bottom: 14px; text-shadow: 0 4px 20px rgba(8,73,201,0.4); }
.page-hero p { font-size: 17px; opacity: 0.9; max-width: 680px; margin-inline: auto; }

/* 子导航（锚点导航） */
.sub-nav {
    position: sticky; top: 72px; z-index: 500; background: rgba(255,255,255,0.94);
    backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); box-shadow: 0 4px 14px rgba(43,77,145,0.06);
}
.sub-nav-inner { display: flex; gap: 4px; overflow-x: auto; padding: 8px 0; scrollbar-width: none; }
.sub-nav-inner::-webkit-scrollbar { display: none; }
.sub-nav a {
    flex-shrink: 0; padding: 9px 20px; border-radius: 50px; font-size: 14px; color: var(--text);
    border: 1px solid transparent; white-space: nowrap;
}
.sub-nav a:hover { color: var(--primary); }
.sub-nav a.active { background: linear-gradient(135deg, var(--primary), #1e9bff); color: #fff; box-shadow: 0 6px 16px rgba(10,108,255,0.3); }

.page-section { padding: 90px 0; }
.page-section-alt { background: var(--bg-deep); }

/* ---------- 关于：公司简介 ---------- */
.company-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.company-info-list { margin-top: 10px; }
.company-info-list li { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--border-strong); font-size: 15px; }
.company-info-list li b { color: var(--primary); font-weight: 700; flex-shrink: 0; }
.company-info-list li span { color: var(--text); }
.company-visual { position: relative; min-height: 460px; }
.company-visual-img { position: absolute; inset: 0; border-radius: var(--radius); background-size: cover; background-position: center; border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover); }
.company-card {
    position: absolute; background: rgba(255,255,255,0.96); border: 1px solid var(--border);
    border-radius: 14px; padding: 14px 18px; box-shadow: var(--shadow-hover); display: flex; align-items: center; gap: 12px; animation: float 4s ease-in-out infinite;
}
.company-card-icon { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, rgba(10,108,255,0.14), rgba(0,184,217,0.14)); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.company-card b { display: block; color: var(--text-heading); font-size: 14px; }
.company-card span { font-size: 12px; color: var(--text-muted); }
.company-card.c1 { top: 8%; left: -30px; }
.company-card.c2 { bottom: 14%; right: -20px; animation-delay: 1.4s; }
.mission-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 20px; }
.mission-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 26px; text-align: center; transition: var(--transition); }
.mission-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.mission-card i { font-style: normal; font-size: 36px; display: block; margin-bottom: 14px; }
.mission-card h3 { color: var(--text-heading); font-size: 18px; margin-bottom: 8px; }
.mission-card p { font-size: 14px; color: var(--text-muted); }

/* ---------- 资格认证 ---------- */
.credentials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.credential-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px 30px; text-align: center; transition: var(--transition); position: relative; overflow: hidden;
}
.credential-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(10,108,255,0.06), transparent); }
.credential-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.cred-icon { width: 84px; height: 84px; margin: 0 auto 20px; border-radius: 50%; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); border: 2px dashed var(--border-strong); display: flex; align-items: center; justify-content: center; font-size: 38px; transition: var(--transition); }
.credential-card:hover .cred-icon { border-style: solid; border-color: var(--primary); }
.credential-card h3 { color: var(--text-heading); font-size: 19px; margin-bottom: 10px; }
.credential-card p { font-size: 14px; color: var(--text-muted); }

/* ---------- 核心优势 ---------- */
.advantage-list { max-width: 860px; margin: 0 auto; }
.advantage-item { display: flex; gap: 26px; padding: 34px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 22px; transition: var(--transition); align-items: flex-start; }
.advantage-item:hover { transform: translateX(10px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.adv-num { flex-shrink: 0; font-size: 44px; font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.adv-content h3 { color: var(--text-heading); font-size: 21px; margin-bottom: 10px; }
.adv-content p { color: var(--text-muted); font-size: 14px; }

/* ---------- 全域数据 / 出海 / 方案 板块 ---------- */
.block { padding: 90px 0; scroll-margin-top: 130px; }
.block-alt { background: var(--bg-deep); }
.block .section-title { margin-bottom: 42px; }
.channel-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.channel-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; display: flex; gap: 16px; align-items: flex-start; transition: var(--transition); }
.channel-item:hover { box-shadow: var(--shadow-hover); border-color: var(--primary); transform: translateY(-4px); }
.channel-item i { font-style: normal; font-size: 26px; flex-shrink: 0; }
.channel-item h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 6px; }
.channel-item p { font-size: 13px; color: var(--text-muted); }

.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.method-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; transition: var(--transition); }
.method-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.method-card .m-icon { font-size: 30px; margin-bottom: 14px; }
.method-card h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 8px; }
.method-card p { font-size: 13px; color: var(--text-muted); }

.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.industry-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; transition: var(--transition); text-align: center; }
.industry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.industry-card i { font-style: normal; font-size: 32px; display: block; margin-bottom: 12px; }
.industry-card h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 6px; }
.industry-card p { font-size: 13px; color: var(--text-muted); }

.region-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.region-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; transition: var(--transition); }
.region-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.region-card h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.region-card h4 i { font-style: normal; }
.region-card p { font-size: 13px; color: var(--text-muted); }

.service-mode { display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; }
.mode-card { flex: 1; min-width: 260px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 28px; text-align: center; transition: var(--transition); }
.mode-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.mode-card i { font-style: normal; font-size: 40px; display: block; margin-bottom: 16px; }
.mode-card h4 { color: var(--text-heading); font-size: 18px; margin-bottom: 10px; }
.mode-card p { font-size: 13px; color: var(--text-muted); }

.solution-list { max-width: 980px; margin: 0 auto; }
.solution-item { display: grid; grid-template-columns: 70px 1fr; gap: 26px; padding: 36px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 24px; transition: var(--transition); }
.solution-item:hover { box-shadow: var(--shadow-hover); border-color: var(--primary); transform: translateY(-4px); }
.solution-num { font-size: 52px; font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.solution-content h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 10px; }
.solution-content p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.solution-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.solution-tags span { font-size: 12px; padding: 5px 14px; border-radius: 50px; background: var(--bg-deep); color: var(--primary); border: 1px solid var(--border-strong); }

/* 研究模型 10 步 */
.model-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 46px 40px; box-shadow: var(--shadow); }
.model-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.model-step { background: var(--bg-deep); border: 1px solid var(--border); border-radius: 12px; padding: 20px 12px; text-align: center; transition: var(--transition); }
.model-step:hover { background: linear-gradient(160deg, rgba(10,108,255,0.1), rgba(0,184,217,0.1)); border-color: var(--primary); transform: translateY(-4px); }
.model-step b { display: block; color: var(--primary); font-size: 22px; margin-bottom: 6px; }
.model-step span { font-size: 13px; color: var(--text); }
.model-note { margin-top: 24px; padding: 18px 24px; border-radius: 12px; background: var(--accent-soft); border: 1px solid var(--border-strong); font-size: 14px; color: var(--text); }

/* 定量定性应用 */
.app-tabs { display: flex; gap: 10px; justify-content: center; margin-bottom: 36px; }
.app-tabs button { padding: 10px 26px; border-radius: 50px; border: 1px solid var(--border-strong); background: #fff; color: var(--text); font-size: 14px; font-weight: 600; transition: var(--transition); }
.app-tabs button.active { background: linear-gradient(135deg, var(--primary), #1e9bff); color: #fff; border-color: transparent; box-shadow: 0 6px 18px rgba(10,108,255,0.3); }
.app-panel { display: none; }
.app-panel.active { display: block; animation: fadeIn 0.5s ease; }

/* ---------- 质量控制 ---------- */
.quality-process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.quality-step { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 24px; text-align: center; position: relative; transition: var(--transition); }
.quality-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.quality-icon { width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); display: flex; align-items: center; justify-content: center; font-size: 28px; }
.quality-step h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 8px; }
.quality-step p { font-size: 13px; color: var(--text-muted); }

.quality-arch { display: flex; align-items: stretch; justify-content: center; flex-wrap: wrap; }
.arch-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 20px; text-align: center; width: 210px; transition: var(--transition); }
.arch-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.arch-item .level { font-size: 30px; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.arch-item h4 { color: var(--text-heading); font-size: 16px; margin: 8px 0; }
.arch-item p { font-size: 13px; color: var(--text-muted); }
.arch-arrow { display: flex; align-items: center; color: var(--primary); font-size: 24px; padding: 0 8px; }

.qc-depts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.qc-dept { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; transition: var(--transition); }
.qc-dept:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.qc-dept h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 10px; }
.qc-dept p { font-size: 13px; color: var(--text-muted); }

.quality-std { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.quality-std-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 26px; transition: var(--transition); }
.quality-std-card:hover { box-shadow: var(--shadow-hover); border-color: var(--primary); transform: translateY(-4px); }
.quality-std-card h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 8px; }
.quality-std-card p { font-size: 13px; color: var(--text-muted); }

/* ---------- 出海调研 ---------- */
.or-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 32px; box-shadow: var(--shadow); }
.or-card h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 16px; position: relative; padding-left: 16px; }
.or-card h3::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 5px; border-radius: 5px; background: linear-gradient(var(--primary), var(--accent)); }
.or-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.or-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.or-tags span { padding: 8px 16px; border-radius: 50px; background: var(--bg-deep); border: 1px solid var(--border-strong); font-size: 13px; color: var(--primary); font-weight: 600; }

.strategy-pyramid { max-width: 760px; margin: 0 auto; }
.pyramid-level { border-radius: 14px; margin-bottom: 12px; padding: 22px 30px; display: flex; justify-content: space-between; align-items: center; background: var(--card); border: 1px solid var(--border); transition: var(--transition); }
.pyramid-level:hover { transform: translateX(8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.pyramid-level b { color: var(--primary); font-size: 15px; }
.pyramid-level span { color: var(--text); font-size: 14px; text-align: right; }
.pyramid-level.lv1 { margin-inline: 16%; }
.pyramid-level.lv2 { margin-inline: 10%; }
.pyramid-level.lv3 { margin-inline: 4%; }

/* ---------- 联系我们 ---------- */
.contact-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.contact-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; color: var(--text-heading); margin-bottom: 8px; font-size: 14px; font-weight: 600; }
.form-group input, .form-group textarea {
    width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
    background: var(--bg); color: var(--text); font-size: 15px; transition: var(--transition); font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,108,255,0.15); background: #fff; }
.form-message { margin-top: 16px; padding: 14px; border-radius: 8px; display: none; font-size: 14px; }
.form-message.success { display: block; background: #e7f9ef; color: #14804a; border: 1px solid #a3e6c1; }
.form-message.error { display: block; background: #fdecec; color: #c0392b; border: 1px solid #f5b5b5; }
.contact-info-side { display: grid; gap: 20px; }
.ci-card { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: var(--transition); box-shadow: var(--shadow); }
.ci-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.ci-icon { font-size: 28px; flex-shrink: 0; }
.ci-card h4 { color: var(--text-heading); margin-bottom: 4px; }
.ci-card p { color: var(--text-muted); font-size: 14px; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 28px; text-align: center; transition: var(--transition); box-shadow: var(--shadow); }
.info-card:hover { border-color: var(--primary); transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.info-icon { font-size: 40px; margin-bottom: 16px; }
.info-card h3 { color: var(--text-heading); font-size: 18px; margin-bottom: 8px; }
.info-card p { color: var(--text-muted); font-size: 14px; }

/* ---------- 内容区通用 ---------- */
.content-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.content-box h3 { color: var(--text-heading); font-size: 20px; margin-bottom: 14px; position: relative; padding-left: 14px; }
.content-box h3::before { content: ''; position: absolute; left: 0; top: 5px; bottom: 5px; width: 4px; border-radius: 4px; background: linear-gradient(var(--primary), var(--accent)); }
.content-box p { color: var(--text-muted); font-size: 15px; margin-bottom: 12px; }

/* ---------- 补充组件样式 ---------- */

/* 发展历程年份 */
.stage-year {
    width: auto; display: inline-block; padding: 8px 20px; margin: 0 auto 14px; border-radius: 50px;
    background: linear-gradient(135deg, var(--primary), #38bdf8); color: #fff;
    font-size: 16px; font-weight: 800; box-shadow: 0 6px 16px rgba(10,108,255,0.35);
}

/* 理念卡片 */
.strategy-item {
    display: flex; gap: 18px; align-items: flex-start; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 26px;
    transition: var(--transition); margin-bottom: 18px;
}
.strategy-item:hover { transform: translateX(8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.strategy-icon { flex-shrink: 0; font-size: 30px; }
.strategy-item h3 { color: var(--text-heading); font-size: 17px; margin-bottom: 6px; }
.strategy-item p { color: var(--text-muted); font-size: 14px; }

/* 分布条形图 */
.age-bars { display: grid; gap: 12px; }
.age-row { display: grid; grid-template-columns: 110px 1fr 90px; align-items: center; gap: 16px; font-size: 13px; color: var(--text); }
.age-row .bar { height: 14px; border-radius: 50px; background: var(--bg-deep); border: 1px solid var(--border); overflow: hidden; }
.age-row .bar i { display: block; height: 100%; border-radius: 50px; background: linear-gradient(90deg, var(--primary), #38bdf8); width: var(--w, 0%); transition: width 1.2s ease; }
.age-row b { text-align: right; color: var(--primary); font-weight: 700; font-size: 13px; }

/* 小标签 chip */
.chip { display: inline-block; font-size: 12px; padding: 5px 14px; border-radius: 50px; background: var(--bg-deep); color: var(--primary); border: 1px solid var(--border-strong); }

/* 解决方案条目 */
.solution-index { font-size: 52px; font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.solution-body h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 10px; }
.solution-body p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.solution-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.solution-icon { width: 48px; height: 48px; border-radius: 14px; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); display: flex; align-items: center; justify-content: center; font-size: 22px; }
.solution-body h3 { margin-bottom: 0; }

/* 板块标题 */
.block-title { color: var(--text-heading); font-size: 24px; font-weight: 700; margin-bottom: 30px; text-align: center; }

/* 质量流程图标 */
.q-icon { width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); display: flex; align-items: center; justify-content: center; font-size: 28px; }

/* 质量关卡图标 */
.arch-icon { font-size: 40px; display: block; margin-bottom: 10px; }
.arch-item h3 { color: var(--text-heading); font-size: 17px; margin: 8px 0; }
.arch-item p { font-size: 13px; color: var(--text-muted); }

/* 资格认证图标 */
.credential-icon { width: 84px; height: 84px; margin: 0 auto 20px; border-radius: 50%; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); border: 2px dashed var(--border-strong); display: flex; align-items: center; justify-content: center; font-size: 38px; transition: var(--transition); }
.credential-card:hover .credential-icon { border-style: solid; border-color: var(--primary); }

/* 核心优势对比 */
.adv-icon { flex-shrink: 0; width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, rgba(10,108,255,0.12), rgba(0,184,217,0.12)); display: flex; align-items: center; justify-content: center; font-size: 26px; }
.adv-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.adv-compare div { padding: 12px 14px; border-radius: 10px; background: var(--bg); border: 1px solid var(--border); }
.adv-compare div:first-child { background: var(--accent-soft); border-color: var(--border-strong); }
.adv-compare b { display: block; font-size: 13px; color: var(--text-heading); margin-bottom: 4px; }
.adv-compare div:first-child b { color: var(--primary); }
.adv-compare span { font-size: 12px; color: var(--text-muted); line-height: 1.7; }

/* 联系布局与信息卡片 */
.contact-left h2 { color: var(--text-heading); font-size: 32px; margin: 12px 0 14px; }
.contact-left > p { color: var(--text-muted); font-size: 15px; margin-bottom: 30px; }
.info-item { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: var(--transition); box-shadow: var(--shadow); }
.info-item:hover { border-color: var(--primary); transform: translateY(-4px); }
.info-icon { font-size: 28px; flex-shrink: 0; }
.info-item h4 { color: var(--text-heading); margin-bottom: 4px; font-size: 15px; }
.info-item p { color: var(--text-muted); font-size: 14px; }

/* 全宽按钮 */
.btn-block { display: block; width: 100%; text-align: center; }

/* 联系表单输入 */
form[data-ajax] input, form[data-ajax] select, form[data-ajax] textarea {
    width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
    background: var(--bg); color: var(--text); font-size: 15px; transition: var(--transition);
    font-family: inherit; margin-bottom: 16px; box-sizing: border-box;
}
form[data-ajax] input:focus, form[data-ajax] select:focus, form[data-ajax] textarea:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,108,255,0.15); background: #fff;
}

/* 样本分布条形 */
.region-chart { display: grid; gap: 10px; }
.region-chart span {
    position: relative; display: block; font-size: 13px; color: var(--text); padding: 8px 12px;
    background: var(--bg-deep); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; z-index: 1;
}
.region-chart span::before {
    content: ''; position: absolute; inset: 0 auto 0 0; width: var(--w, 50%); z-index: -1;
    background: linear-gradient(90deg, rgba(10,108,255,0.22), rgba(56,189,248,0.18));
}
.region-card h3 { color: var(--text-heading); font-size: 17px; margin-bottom: 12px; }

/* 渠道列表文本项（credentials 页） */
.channel-list span { display: block; padding: 10px 14px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; font-size: 13px; color: var(--text); }

/* 合作流程步骤（模型步骤） */
.model-step i { font-style: normal; display: block; color: var(--primary); font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.model-step h4 { color: var(--text-heading); font-size: 14px; margin-bottom: 6px; }
.model-step p { font-size: 12px; color: var(--text-muted); }

/* ============================================================
   多语言切换器
   ============================================================ */
.lang-switch { position: relative; margin-left: 18px; flex: 0 0 auto; }
.lang-switch-btn {
    display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px;
    border: 1px solid var(--border); border-radius: 50px; background: #fff;
    color: var(--text-heading); font-size: 13px; font-weight: 600; cursor: pointer;
    transition: var(--transition); white-space: nowrap;
}
.lang-switch-btn:hover { border-color: var(--primary); color: var(--primary); }
.lang-switch-btn .lang-flag { font-size: 15px; line-height: 1; }
.lang-switch-btn .lang-caret { font-size: 9px; color: var(--text-muted); transition: var(--transition); }
.lang-switch.open .lang-switch-btn { border-color: var(--primary); color: var(--primary); }
.lang-switch.open .lang-caret { transform: rotate(180deg); }
.lang-switch-menu {
    position: absolute; top: calc(100% + 10px); right: 0; z-index: 1000;
    min-width: 178px; padding: 8px; background: #fff;
    border: 1px solid var(--border); border-radius: 14px;
    box-shadow: 0 18px 45px rgba(43, 77, 145, 0.18);
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: var(--transition);
}
.lang-switch.open .lang-switch-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switch-menu button {
    display: flex; align-items: center; gap: 10px; width: 100%;
    padding: 9px 12px; border: 0; border-radius: 10px; background: transparent;
    color: var(--text); font-size: 13.5px; text-align: left; cursor: pointer;
    transition: var(--transition); font-family: inherit;
}
.lang-switch-menu button:hover { background: var(--bg-deep); color: var(--primary); }
.lang-switch-menu button.active { background: var(--bg-deep); color: var(--primary); font-weight: 700; }
.lang-switch-menu button .lang-flag { font-size: 15px; }
.lang-switch-menu button .lang-check { margin-left: auto; font-size: 12px; color: var(--primary); }

/* 移动端导航中的语言列表 */
.mobile-nav .mobile-langs { padding: 16px 8px 0; border-bottom: 0; }
.mobile-nav .mobile-langs-title {
    display: block; padding: 0 0 10px; font-size: 13px; color: var(--text-muted);
    font-weight: 600; border-bottom: 0;
}
.mobile-nav .mobile-lang-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.mobile-nav .mobile-lang-list button {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 8px; border: 1px solid var(--border); border-radius: 10px;
    background: #fff; color: var(--text); font-size: 13px; font-family: inherit; cursor: pointer;
}
.mobile-nav .mobile-lang-list button.active { border-color: var(--primary); color: var(--primary); font-weight: 700; }

@media (max-width: 900px) { .lang-switch { display: none; } }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .omni-grid, .feature-grid, .overseas-grid, .app-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid, .team-grid, .credentials-grid, .channel-list, .method-grid, .industry-grid, .region-grid, .qc-depts { grid-template-columns: repeat(2, 1fr); }
    .model-steps { grid-template-columns: repeat(3, 1fr); }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-content h1 { font-size: 42px; }
}
@media (max-width: 900px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .about-grid, .company-layout { grid-template-columns: 1fr; }
    .case-card, .case-detail { grid-template-columns: 1fr; }
    .case-detail-img { min-height: 280px; }
    .case-detail-info { padding: 30px; }
    .contact-layout { grid-template-columns: 1fr; }
    .quality-process { grid-template-columns: repeat(2, 1fr); }
    .quality-std { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .section { padding: 60px 0; }
    .section-title h2 { font-size: 28px; }
    .hero-content h1 { font-size: 32px; }
    .hero-content p { font-size: 15px; }
    .hero-stats { gap: 24px; }
    .hero-stat b { font-size: 26px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .omni-grid, .feature-grid, .overseas-grid, .app-grid { grid-template-columns: 1fr; }
    .case-grid, .team-grid, .credentials-grid, .channel-list, .method-grid, .industry-grid, .region-grid, .qc-depts, .info-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .model-steps { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .page-hero h1 { font-size: 34px; }
    .page-hero { padding: 120px 0 60px; }
    .case-info { padding: 26px; }
    .case-points { grid-template-columns: 1fr; }
    .cta-box { padding: 50px 24px; }
    .solution-item { grid-template-columns: 1fr; gap: 14px; }
    .footer-grid { grid-template-columns: 1fr; }
    .mission-cards { grid-template-columns: 1fr; }
    .float-tools a { width: 42px; height: 42px; }
    .adv-compare { grid-template-columns: 1fr; }
    .age-row { grid-template-columns: 70px 1fr 70px; gap: 10px; font-size: 12px; }
    .info-grid { grid-template-columns: 1fr; }
}