:root {
  --bg: #f8fafc;
  --bg-2: #ffffff;
  --card: #ffffff;
  --card-2: #f1f5f9;
  --line: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-2: #0ea5e9;
  --primary-weak: #eff6ff;
  --radius: 20px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .04), 0 10px 40px rgba(0, 0, 0, .05);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, .02), 0 20px 60px rgba(0, 0, 0, .08);
  --shadow-xl: 0 8px 12px rgba(0, 0, 0, .03), 0 30px 80px rgba(0, 0, 0, .1);
  --shadow-glow: 0 0 60px rgba(37, 99, 235, .15);
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(37, 99, 235, .08) 0%, rgba(14, 165, 233, .08) 100%);
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
  --transition-slow: .4s cubic-bezier(.4, 0, .2, 1);
  --maxw: 1280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(37, 99, 235, .06), transparent 60%),
    radial-gradient(900px 520px at 85% 0%, rgba(14, 165, 233, .06), transparent 55%),
    radial-gradient(900px 520px at 70% 85%, rgba(14, 165, 233, .04), transparent 60%),
    radial-gradient(600px 400px at 50% 50%, rgba(37, 99, 235, .02), transparent 50%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }

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

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, .6);
  transition: var(--transition);
}
.nav:hover {
  background: rgba(255, 255, 255, .95);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 14px; font-weight: 700; }
.brand-txt { display: grid; gap: 2px; line-height: 1.1; }
.brand-name { font-size: 17px; letter-spacing: .3px; }
.brand-sub { font-size: 12px; font-weight: 600; color: var(--muted); letter-spacing: .5px; text-transform: uppercase; }
.brand .logo { width: 42px; height: 42px; border-radius: 14px; background: var(--gradient-primary); color: #fff; display: grid; place-items: center; box-shadow: 0 6px 20px rgba(37, 99, 235, .3); overflow: hidden; position: relative; transition: var(--transition); }
.brand:hover .logo { transform: scale(1.05); box-shadow: 0 8px 25px rgba(37, 99, 235, .4); }
.brand .logo-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.brand .logo-fallback { position: absolute; inset: 0; display: grid; place-items: center; font-size: 18px; font-weight: 900; }
.nav-links { display: flex; gap: 32px; font-size: 15px; color: var(--muted); }
.nav-links a { position: relative; transition: var(--transition); }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--gradient-primary); border-radius: 1px; transition: var(--transition); }
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; align-items: center; justify-content: center; height: 36px; padding: 0 12px; border-radius: 12px; border: 1px solid var(--line); background: #ffffff; color: var(--text); font-weight: 700; cursor: pointer; transition: var(--transition); }
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; font-size: 13px; background: #ffffff; transition: var(--transition); }
.lang-switch:hover { border-color: rgba(37, 99, 235, .3); }
.lang-switch button { border: 0; background: transparent; padding: 6px 12px; cursor: pointer; color: var(--muted); transition: var(--transition); }
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active { background: var(--primary-weak); color: var(--primary); font-weight: 600; }
.btn { display: inline-flex; align-items: center; gap: 8px; border: 0; cursor: pointer; font-size: 15px; padding: 11px 20px; border-radius: 14px; font-weight: 700; transition: var(--transition); position: relative; overflow: hidden; }
.btn::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,.2) 0%, rgba(255,255,255,0) 100%); opacity: 0; transition: var(--transition); }
.btn:hover::before { opacity: 1; }
.btn-primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 14px rgba(37, 99, 235, .3); }
.btn-primary:hover { box-shadow: 0 8px 24px rgba(37, 99, 235, .4); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { background: #ffffff; color: var(--text); border: 1px solid var(--line); box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.btn-ghost:hover { border-color: rgba(37, 99, 235, .4); box-shadow: 0 0 0 4px rgba(37, 99, 235, .08), 0 4px 12px rgba(0,0,0,.06); transform: translateY(-1px); }

/* ---------- Hero ---------- */
.hero { padding: 120px 0 100px; position: relative; }
.hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(1000px 500px at 50% 50%, rgba(37, 99, 235, .04), transparent 60%); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-copy { text-align: left; }
.hero .eyebrow { display: inline-block; font-size: 13px; color: var(--primary); background: var(--primary-weak); border: 1px solid rgba(37, 99, 235, .12); padding: 8px 18px; border-radius: 999px; margin-bottom: 24px; letter-spacing: 1px; text-transform: uppercase; font-weight: 600; transition: var(--transition); }
.hero .eyebrow:hover { background: rgba(37, 99, 235, .12); border-color: rgba(37, 99, 235, .2); }
.hero h1 { font-size: 56px; line-height: 1.1; margin: 0 0 20px; letter-spacing: -1px; background: linear-gradient(135deg, var(--text) 0%, #1e293b 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 18px; color: var(--muted); max-width: 560px; margin: 0 0 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: flex-start; flex-wrap: wrap; }
.hero-metrics { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.metric { display: inline-flex; align-items: baseline; gap: 10px; padding: 12px 18px; border-radius: 16px; background: #ffffff; border: 1px solid var(--line); box-shadow: 0 4px 12px rgba(0,0,0,.03); transition: var(--transition); }
.metric:hover { border-color: rgba(37, 99, 235, .2); box-shadow: 0 8px 24px rgba(0,0,0,.06); transform: translateY(-2px); }
.metric .n { font-size: 24px; font-weight: 900; letter-spacing: .3px; color: var(--primary); }
.metric .l { color: var(--muted); font-size: 14px; font-weight: 600; }
.hero-visual-frame { position: relative; border-radius: calc(var(--radius) + 8px); overflow: hidden; background: #ffffff; border: 1px solid var(--line); box-shadow: var(--shadow-xl); padding: 10px; transition: var(--transition-slow); }
.hero-visual-frame:hover { box-shadow: var(--shadow-xl), var(--shadow-glow); transform: translateY(-6px); }
.hero-visual-frame::before { content: ""; position: absolute; inset: 0; background:
  radial-gradient(900px 420px at 15% 12%, rgba(37, 99, 235, .06), transparent 60%),
  radial-gradient(680px 380px at 85% 30%, rgba(14, 165, 233, .06), transparent 62%);
  pointer-events: none; opacity: .8;
}
.hero-visual-frame img { display: block; width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover; border-radius: calc(var(--radius) - 2px); }

/* ---------- 区块 ---------- */
.section { padding: 100px 0; position: relative; }
.section-alt { background: #ffffff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; }
.section-alt::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(1200px 600px at 50% 0%, rgba(37, 99, 235, .03), transparent 50%); pointer-events: none; }
.section-head { text-align: center; margin-bottom: 56px; position: relative; z-index: 1; }
.section-head .kicker { color: var(--primary); font-size: 14px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 12px; display: inline-block; }
.section-head h2 { font-size: 40px; margin: 12px 0 12px; letter-spacing: -.5px; font-weight: 800; }
.section-head p { color: var(--muted); margin: 0; max-width: 640px; margin-left: auto; margin-right: auto; font-size: 17px; line-height: 1.6; }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: var(--transition); position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); opacity: 0; transition: var(--transition); }
.card:hover { transform: translateY(-5px); border-color: rgba(37, 99, 235, .25); box-shadow: var(--shadow-lg); }
.card:hover::before { opacity: 1; }

/* 服务卡片 */
.service .ico { width: 64px; height: 64px; border-radius: 18px; background: var(--primary-weak); border: 1px solid rgba(37, 99, 235, .12); display: grid; place-items: center; margin-bottom: 20px; overflow: hidden; box-shadow: 0 8px 24px rgba(37, 99, 235, .1); transition: var(--transition); }
.service:hover .ico { transform: scale(1.08); box-shadow: 0 12px 30px rgba(37, 99, 235, .18); }
.service .ico img { width: 100%; height: 100%; object-fit: cover; display: block; }
.service .ico span { font-size: 28px; color: var(--primary); }
.service h3 { margin: 0 0 10px; font-size: 20px; font-weight: 700; }
.service p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; }

/* 案例卡片 */
.case { cursor: pointer; }
.case .cover { height: 160px; border-radius: 16px; margin-bottom: 16px; overflow: hidden; background: #f8fafc; border: 1px solid var(--line); position: relative; transition: var(--transition); }
.case:hover .cover { border-color: rgba(37, 99, 235, .2); }
.case .cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: var(--transition-slow); }
.case:hover .cover img { transform: scale(1.05); }
.case .cover .fallback { width: 100%; height: 100%; display: grid; place-items: center; color: var(--primary); font-size: 30px; background:
  radial-gradient(800px 320px at 15% 20%, rgba(37, 99, 235, .08), transparent 60%),
  radial-gradient(680px 320px at 85% 30%, rgba(14, 165, 233, .08), transparent 62%),
  linear-gradient(180deg, #ffffff, #f8fafc);
}
.case .tag { display: inline-block; font-size: 12px; color: var(--primary); background: var(--primary-weak); border: 1px solid rgba(37, 99, 235, .12); padding: 4px 10px; border-radius: 999px; margin-bottom: 10px; font-weight: 700; transition: var(--transition); }
.case:hover .tag { background: rgba(37, 99, 235, .12); }
.case h3 { margin: 0 0 6px; font-size: 17px; }
.case p { margin: 0; color: var(--muted); font-size: 14px; }
.case .meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line); background: #ffffff; color: var(--muted); font-size: 12px; font-weight: 700; transition: var(--transition); }
.chip:hover { border-color: rgba(37, 99, 235, .2); }
.chip strong { color: var(--text); }

/* 关于 + 数据 */
.about-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: 36px; font-weight: 800; }
.about-text p { color: var(--muted); line-height: 1.8; font-size: 16px; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: var(--transition); position: relative; overflow: hidden; }
.stat::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); opacity: 0; transition: var(--transition); }
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat:hover::before { opacity: 1; }
.stat .num { font-size: 40px; font-weight: 800; color: var(--primary); letter-spacing: -1px; }
.stat .lbl { color: var(--muted); font-size: 15px; margin-top: 6px; }

/* 团队 */
.member { text-align: center; transition: var(--transition); }
.member:hover { transform: translateY(-3px); }
.member .avatar { width: 74px; height: 74px; border-radius: 50%; background: var(--gradient-primary); color: #fff; display: grid; place-items: center; font-size: 26px; margin: 0 auto 14px; overflow: hidden; border: 3px solid #ffffff; box-shadow: 0 8px 24px rgba(37, 99, 235, .25); transition: var(--transition); }
.member:hover .avatar { box-shadow: 0 12px 30px rgba(37, 99, 235, .35); transform: scale(1.05); }
.member .avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.member h4 { margin: 0 0 2px; font-size: 16px; }
.member .role { color: var(--primary); font-size: 13px; margin-bottom: 6px; font-weight: 600; }
.member p { color: var(--muted); font-size: 13px; margin: 0; }

/* 资讯 */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.news-item { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); background: #ffffff; box-shadow: var(--shadow); transition: var(--transition); cursor: pointer; position: relative; overflow: hidden; }
.news-item::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); opacity: 0; transition: var(--transition); }
.news-item:hover { border-color: rgba(37, 99, 235, .25); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-item:hover::before { opacity: 1; }
.news-cover-wrap { position: relative; }
.news-cover { width: 100%; height: 180px; overflow: hidden; background: #f8fafc; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: var(--transition-slow); }
.news-item:hover .news-cover img { transform: scale(1.05); }
.news-tag { position: absolute; top: 12px; left: 12px; display: inline-block; font-size: 12px; color: #fff; background: var(--gradient-primary); padding: 4px 12px; border-radius: 999px; font-weight: 600; box-shadow: 0 2px 8px rgba(37, 99, 235, .3); }
.news-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.news-meta { margin-bottom: 10px; }
.news-date { color: var(--muted); font-size: 13px; }
.news-body h4 { margin: 0 0 8px; font-size: 17px; line-height: 1.4; transition: var(--transition); }
.news-item:hover .news-body h4 { color: var(--primary); }
.news-body p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-readmore { display: inline-block; margin-top: 14px; color: var(--primary); font-size: 13px; font-weight: 600; transition: var(--transition); }
.news-item:hover .news-readmore { transform: translateX(4px); }

/* 合作伙伴 */
.partners { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.partner { display: inline-flex; align-items: center; gap: 10px; background: #ffffff; border: 1px solid var(--line); border-radius: 999px; padding: 12px 18px; color: var(--text); font-weight: 800; box-shadow: 0 4px 12px rgba(0,0,0,.04); transition: var(--transition); }
.partner:hover { border-color: rgba(37, 99, 235, .3); box-shadow: 0 8px 24px rgba(0,0,0,.08); transform: translateY(-3px); }
.partner img { width: 22px; height: 22px; border-radius: 6px; object-fit: cover; }

/* 联系 */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: 15px; margin-bottom: 8px; color: var(--muted); font-weight: 500; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); border-radius: 16px; font-size: 15px; font-family: inherit; background: #ffffff; color: var(--text); box-shadow: 0 2px 6px rgba(0,0,0,.02); transition: var(--transition);
}
.form-row input:hover, .form-row textarea:hover, .form-row select:hover {
  border-color: rgba(37, 99, 235, .3);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-weak), 0 4px 12px rgba(37, 99, 235, .1); }
.contact-info p { color: var(--muted); margin: 6px 0; }
.contact-info .big { font-size: 18px; color: var(--text); font-weight: 600; }

/* 页脚 */
.footer { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); color: #cbd5e1; padding: 60px 0; margin-top: 60px; border-top: 1px solid #1e293b; position: relative; overflow: hidden; }
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(800px 400px at 50% 0%, rgba(37, 99, 235, .1), transparent 60%); pointer-events: none; }
.footer a { color: #cbd5e1; transition: var(--transition); }
.footer a:hover { color: #fff; }
.footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; position: relative; z-index: 1; }
.footer .copy { font-size: 13px; color: #64748b; }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%) translateY(20px); background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); color: #fff; padding: 12px 20px; border-radius: 10px; opacity: 0; transition: var(--transition); z-index: 100; box-shadow: 0 10px 30px rgba(0,0,0,.2); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.modal { position: fixed; inset: 0; display: none; place-items: center; z-index: 200; }
.modal.show { display: grid; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, .7); backdrop-filter: blur(10px); }
.modal-card { position: relative; width: min(860px, calc(100vw - 32px)); max-height: min(76vh, 720px); overflow: auto; border-radius: calc(var(--radius) + 8px); background: #ffffff; border: 1px solid var(--line); box-shadow: 0 40px 100px rgba(0,0,0,.25); animation: modalIn .3s ease-out; }
@keyframes modalIn { from { opacity: 0; transform: scale(.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-close { position: absolute; top: 14px; right: 14px; height: 36px; padding: 0 12px; border-radius: 12px; border: 1px solid var(--line); background: #f8fafc; color: var(--text); cursor: pointer; font-weight: 800; transition: var(--transition); }
.modal-close:hover { background: #e2e8f0; transform: scale(1.05); }
.modal-body { padding: 26px; }
.modal-hero { display: grid; grid-template-columns: 220px 1fr; gap: 18px; align-items: start; }
.modal-cover { width: 100%; height: 150px; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); background: #f8fafc; }
.modal-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.modal-title { font-size: 22px; font-weight: 900; margin: 0 0 6px; letter-spacing: -.2px; color: var(--text); }
.modal-sub { margin: 0; color: var(--muted); }
.modal-content { margin-top: 16px; color: #334155; white-space: pre-wrap; line-height: 1.7; }

/* 文章详情 */
.article-detail { max-width: 100%; }
.article-cover { width: 100%; height: 280px; border-radius: 16px; overflow: hidden; margin-bottom: 24px; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.article-header { margin-bottom: 20px; }
.article-tag { display: inline-block; font-size: 12px; color: #fff; background: var(--gradient-primary); padding: 4px 14px; border-radius: 999px; font-weight: 600; margin-bottom: 12px; }
.article-title { font-size: 26px; font-weight: 800; margin: 0 0 12px; line-height: 1.3; color: var(--text); }
.article-meta { display: flex; gap: 16px; color: var(--muted); font-size: 14px; }
.article-summary { font-size: 17px; color: var(--text); line-height: 1.7; padding: 18px; background: var(--primary-weak); border-radius: 14px; border-left: 4px solid var(--primary); margin-bottom: 24px; }
.article-content { font-size: 15px; color: #334155; line-height: 1.8; white-space: pre-wrap; }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .about-wrap, .contact-wrap { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; position: fixed; left: 16px; right: 16px; top: 74px; flex-direction: column; gap: 14px; padding: 16px; border-radius: 18px; background: #ffffff; border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0,0,0,.15); }
  body.nav-open .nav-links { display: flex; }
  .news-item { grid-template-columns: 1fr; }
  .news-cover { width: 100%; height: 160px; }
  .modal-hero { grid-template-columns: 1fr; }
}

/* 手机端适配 */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  
  /* 导航栏 */
  .nav-inner { height: 56px; }
  .brand .logo { width: 30px; height: 30px; border-radius: 10px; }
  .brand-name { font-size: 13px; }
  .brand-sub { font-size: 10px; }
  .nav-right { gap: 8px; }
  .nav-toggle { height: 32px; padding: 0 10px; font-size: 13px; border-radius: 10px; }
  .lang-switch { font-size: 12px; }
  .lang-switch button { padding: 5px 10px; }
  .btn { font-size: 14px; padding: 10px 16px; border-radius: 12px; }
  
  /* Hero区域 */
  .hero { padding: 60px 0 50px; }
  .hero .eyebrow { font-size: 11px; padding: 5px 10px; margin-bottom: 14px; }
  .hero h1 { font-size: 28px; line-height: 1.2; margin-bottom: 12px; }
  .hero p { font-size: 15px; margin-bottom: 20px; }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-metrics { gap: 8px; margin-top: 14px; }
  .metric { padding: 8px 10px; border-radius: 12px; }
  .metric .n { font-size: 16px; }
  .metric .l { font-size: 12px; }
  .hero-visual-frame { border-radius: 16px; padding: 6px; margin-top: 24px; }
  
  /* 区块通用 */
  .section { padding: 50px 0; }
  .section-head { margin-bottom: 30px; }
  .section-head .kicker { font-size: 12px; }
  .section-head h2 { font-size: 24px; margin: 8px 0 6px; }
  .section-head p { font-size: 14px; }
  
  /* 网格布局 */
  .grid { gap: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  
  /* 卡片 */
  .card { padding: 20px; border-radius: 16px; }
  
  /* 服务卡片 */
  .service .ico { width: 48px; height: 48px; border-radius: 14px; margin-bottom: 12px; }
  .service h3 { font-size: 16px; }
  .service p { font-size: 13px; }
  
  /* 案例卡片 */
  .case .cover { height: 140px; border-radius: 14px; margin-bottom: 12px; }
  .case .tag { font-size: 11px; padding: 3px 8px; margin-bottom: 8px; }
  .case h3 { font-size: 15px; }
  .case p { font-size: 13px; }
  .case .meta { margin-top: 10px; }
  .chip { padding: 5px 8px; font-size: 11px; }
  
  /* 关于 */
  .about-wrap { gap: 24px; }
  .about-text p { font-size: 14px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat { padding: 16px; border-radius: 16px; }
  .stat .num { font-size: 28px; }
  .stat .lbl { font-size: 13px; }
  
  /* 团队 */
  .member .avatar { width: 60px; height: 60px; font-size: 22px; margin-bottom: 10px; }
  .member h4 { font-size: 14px; }
  .member .role { font-size: 12px; }
  .member p { font-size: 12px; }
  
  /* 资讯 */
  .news-grid { grid-template-columns: 1fr; }
  .news-cover { height: 160px; border-radius: 12px 12px 0 0; }
  .news-body { padding: 14px; }
  .news-body h4 { font-size: 15px; }
  .news-body p { font-size: 13px; }
  .news-item { 
    border-radius: 16px;
  }
  
  /* 合作伙伴 */
  .partners { gap: 10px; }
  .partner { 
    padding: 10px 14px; 
    font-size: 13px; 
    border-radius: 999px;
  }
  .partner img { width: 18px; height: 18px; }
  
  /* 联系表单 */
  .contact-wrap { gap: 24px; }
  .form-row { margin-bottom: 14px; }
  .form-row label { font-size: 13px; margin-bottom: 5px; }
  .form-row input, .form-row textarea, .form-row select {
    padding: 10px 12px;
    font-size: 14px;
    border-radius: 12px;
  }
  .contact-info .big { font-size: 16px; }
  
  /* 页脚 */
  .footer { padding: 36px 0; margin-top: 30px; }
  .footer .container { flex-direction: column; gap: 16px; }
  .footer .copy { font-size: 12px; }
  
  /* 弹窗 */
  .modal-card { 
    width: calc(100vw - 24px); 
    max-height: 85vh;
    border-radius: 20px;
  }
  .modal-close { 
    top: 10px; 
    right: 10px; 
    height: 32px; 
    padding: 0 10px;
    font-size: 13px;
  }
  .modal-body { padding: 20px; }
  .modal-cover { height: 120px; border-radius: 14px; }
  .modal-title { font-size: 18px; }
  .modal-sub { font-size: 13px; }
  .modal-content { font-size: 14px; margin-top: 12px; }
  
  /* Toast */
  .toast { 
    left: 16px; 
    right: 16px; 
    bottom: 24px; 
    transform: translateX(0) translateY(20px);
    padding: 10px 16px;
    font-size: 14px;
    border-radius: 12px;
  }
  .toast.show { transform: translateX(0) translateY(0); }
}

/* 小手机适配 (375px及以下) */
@media (max-width: 375px) {
  .container { padding: 0 12px; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 24px; }
  .hero p { font-size: 14px; }
  .section { padding: 40px 0; }
  .section-head h2 { font-size: 20px; }
  .card { padding: 16px; }
  .stat .num { font-size: 24px; }
  .metric .n { font-size: 14px; }
}

/* 动画效果 */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .7; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 渐入动画类 */
.fade-in-up { animation: fadeInUp .6s ease-out forwards; }
.fade-in { animation: fadeIn .6s ease-out forwards; }
.slide-in-left { animation: slideInLeft .6s ease-out forwards; }
.slide-in-right { animation: slideInRight .6s ease-out forwards; }

/* 延迟动画 */
.delay-1 { animation-delay: .1s; opacity: 0; }
.delay-2 { animation-delay: .2s; opacity: 0; }
.delay-3 { animation-delay: .3s; opacity: 0; }
.delay-4 { animation-delay: .4s; opacity: 0; }

/* 悬停光效 */
.hover-glow { transition: var(--transition); }
.hover-glow:hover { box-shadow: 0 0 30px rgba(37, 99, 235, .15); }

/* 渐变文字 */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 玻璃效果 */
.glass {
  background: rgba(255, 255, 255, .8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .2);
}

/* 科技感装饰线 */
.tech-line {
  position: relative;
}
.tech-line::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

/* 滚动动画触发 */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease-out, transform .6s ease-out;
}
[data-animate].animated {
  opacity: 1;
  transform: translateY(0);
}