/* ============================================================
   一万眼科技 企业官网 · 全站样式
   主色：医疗蓝 #1B5FD9 | 辅色：#0E3E9E / #F5F8FF
   ============================================================ */
:root {
  --primary: #1B5FD9;
  --primary-dark: #0E3E9E;
  --primary-light: #EAF1FE;
  --ink: #1A2233;
  --ink-2: #4A5568;
  --ink-3: #8A94A6;
  --bg: #FFFFFF;
  --bg-soft: #F5F8FF;
  --line: #E3E9F4;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(27, 95, 217, .10);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 15px; letter-spacing: .5px;
  box-shadow: var(--shadow);
}
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.logo-text small { display: block; font-size: 10px; font-weight: 400; color: var(--ink-3); letter-spacing: 2px; }

.nav { display: flex; gap: 8px; }
.nav a {
  padding: 8px 18px; border-radius: 8px; font-size: 15px; color: var(--ink-2);
  transition: all .25s;
}
.nav a:hover { color: var(--primary); background: var(--primary-light); }
.nav a.active { color: var(--primary); font-weight: 600; background: var(--primary-light); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0B2A6B 0%, #0E3E9E 45%, #1B5FD9 100%);
  color: #fff;
  padding: 110px 0 130px;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.14) 0%, transparent 70%);
}
.hero::before { width: 620px; height: 620px; top: -220px; right: -140px; }
.hero::after  { width: 420px; height: 420px; bottom: -180px; left: -100px; }

.hero-inner { position: relative; z-index: 1; max-width: 820px; }
.hero-tag {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.35); font-size: 13px; letter-spacing: 2px;
  margin-bottom: 28px; color: rgba(255,255,255,.9);
}
.hero h1 { font-size: 46px; line-height: 1.3; font-weight: 700; letter-spacing: 1px; }
.hero h1 .accent { color: #9CC2FF; }
.hero p.sub {
  margin-top: 24px; font-size: 18px; color: rgba(255,255,255,.82);
  max-width: 640px;
}
.hero-actions { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 13px 34px; border-radius: 8px;
  font-size: 15px; font-weight: 600; transition: all .25s; cursor: pointer;
}
.btn-primary { background: #fff; color: var(--primary-dark); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.2); }
.btn-ghost { border: 1px solid rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }

/* ---------- 通用 Section ---------- */
.section { padding: 96px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .kicker {
  font-size: 13px; letter-spacing: 3px; color: var(--primary); font-weight: 600;
  text-transform: uppercase;
}
.section-head h2 { font-size: 32px; margin-top: 12px; font-weight: 700; }
.section-head p { margin-top: 14px; color: var(--ink-2); max-width: 720px; margin-left: auto; margin-right: auto; }

/* ---------- 数据统计 ---------- */
.stats { background: #fff; padding: 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  transform: translateY(-56px);
  background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--line);
}
.stat-item { text-align: center; padding: 34px 16px; }
.stat-item + .stat-item { border-left: 1px solid var(--line); }
.stat-num { font-size: 38px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.stat-num span { font-size: 16px; font-weight: 600; margin-left: 4px; }
.stat-label { margin-top: 6px; color: var(--ink-3); font-size: 14px; }

/* ---------- 卡片 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 48px; align-items: center; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 30px; transition: all .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card .icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 22px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 数字人 / 超级大脑 板块 ---------- */
.brain-panel {
  background: linear-gradient(135deg, #0B2A6B, #1B5FD9);
  border-radius: 20px; color: #fff; padding: 56px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.brain-panel h3 { font-size: 28px; margin-bottom: 16px; }
.brain-panel p { color: rgba(255,255,255,.82); font-size: 15px; }
.brain-list { margin-top: 24px; display: grid; gap: 12px; }
.brain-list li {
  display: flex; gap: 10px; align-items: flex-start; font-size: 15px;
  color: rgba(255,255,255,.92);
}
.brain-list li::before { content: "✓"; color: #9CC2FF; font-weight: 700; }
.brain-visual {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  border-radius: 16px; padding: 36px; text-align: center;
}
.brain-visual .big { font-size: 56px; font-weight: 700; letter-spacing: 1px; }
.brain-visual .desc { margin-top: 10px; font-size: 13px; letter-spacing: 2px; color: rgba(255,255,255,.7); }

/* ---------- 服务流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.flow-step { text-align: center; padding: 0 20px; position: relative; }
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; top: 28px; right: -50%; width: 100%;
  height: 2px; background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.flow-num {
  position: relative; z-index: 1; width: 56px; height: 56px; margin: 0 auto 18px;
  border-radius: 50%; background: var(--primary-light); color: var(--primary);
  font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--primary);
}
.flow-step h4 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 页脚 CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--primary-dark), var(--primary));
  border-radius: 20px; padding: 64px 56px; color: #fff; text-align: center;
}
.cta-band h2 { font-size: 30px; margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.82); margin-bottom: 32px; }
.cta-band .btn { background: #fff; color: var(--primary-dark); }

/* ---------- 页脚 ---------- */
.footer { background: #0C1830; color: rgba(255,255,255,.72); padding: 72px 0 0; margin-top: 96px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 56px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer li { margin-bottom: 12px; font-size: 14px; }
.footer a:hover { color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 300px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.45);
}

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.info-card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; margin-bottom: 20px; display: flex; gap: 18px; align-items: flex-start;
}
.info-card .icon {
  flex: none; width: 48px; height: 48px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.info-card h4 { font-size: 16px; margin-bottom: 4px; }
.info-card p { font-size: 14px; color: var(--ink-2); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit; color: var(--ink); background: #FBFCFE;
  transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--primary); background: #fff;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; background: var(--primary); color: #fff; border: none; padding: 14px; font-size: 16px; font-weight: 600; border-radius: 8px; cursor: pointer; transition: background .2s; }
.form-submit:hover { background: var(--primary-dark); }

/* ---------- 关于我们时间线 ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 2px; background: var(--line);
}
.timeline-item { position: relative; padding-bottom: 36px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -30px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--primary); border: 3px solid var(--primary-light);
}
.timeline-item .year { font-size: 18px; font-weight: 700; color: var(--primary); }
.timeline-item h4 { font-size: 16px; margin: 4px 0; }
.timeline-item p { font-size: 14px; color: var(--ink-2); }

.values-list li {
  display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px;
}
.values-list .v-icon {
  flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--primary-light);
  color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.values-list h4 { font-size: 15.5px; }
.values-list p { font-size: 13.5px; color: var(--ink-2); margin-top: 2px; }

/* ---------- 页头横幅（内页） ---------- */
.page-hero {
  background: linear-gradient(135deg, #0B2A6B, #1B5FD9);
  color: #fff; padding: 84px 0; text-align: center;
}
.page-hero h1 { font-size: 38px; letter-spacing: 2px; }
.page-hero p { margin-top: 12px; color: rgba(255,255,255,.8); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); transform: translateY(-40px); }
  .stat-item:nth-child(3) { border-left: none; }
  .stat-item:nth-child(n+3) { border-top: 1px solid var(--line); }
  .brain-panel { grid-template-columns: 1fr; padding: 40px 28px; }
  .grid-2, .contact-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .flow-step:not(:last-child)::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
  .section-head h2 { font-size: 26px; }
}
@media (max-width: 620px) {
  .nav { display: none; }
  .grid-3, .grid-4, .flow, .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 72px 0 90px; }
  .hero h1 { font-size: 28px; }
}