/* 泽视官网 —— 北京泽视科技有限公司
 * 纯静态，无外部依赖（字体走系统栈，无 CDN）。 */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f8fc;
  --bg-hero: linear-gradient(135deg, #eaf1ff 0%, #f6f8fc 55%, #ffffff 100%);
  --text: #16203a;
  --text-muted: #5a6276;
  --text-faint: #8b93a6;
  --accent: #1d6fe0;
  --accent-dark: #1657b8;
  --border: #e6eaf2;
  --card: #ffffff;
  --shadow: 0 1px 2px rgba(22, 32, 58, .04), 0 8px 24px rgba(22, 32, 58, .06);
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

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

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand .logo-mark { width: 34px; height: 34px; border-radius: 9px; display: block; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  background: var(--bg-hero);
  border-bottom: 1px solid var(--border);
  padding: 96px 0 88px;
  text-align: center;
}
.hero .logo-badge { width: 76px; height: 76px; border-radius: 20px; margin: 0 auto 28px; display: block; box-shadow: var(--shadow); }
.hero h1 { font-size: 46px; line-height: 1.2; margin: 0 0 18px; letter-spacing: 1px; }
.hero .lead { font-size: 19px; color: var(--text-muted); max-width: 660px; margin: 0 auto 14px; }
.hero .platforms { margin-top: 26px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.pill {
  display: inline-block; padding: 7px 16px; border-radius: 999px;
  background: #fff; border: 1px solid var(--border); color: var(--text-muted);
  font-size: 14px; font-weight: 500;
}

/* ---------- 通用 section ---------- */
.section { padding: 76px 0; }
.section.alt { background: var(--bg-alt); }
.section h2 { font-size: 30px; margin: 0 0 14px; text-align: center; }
.section .sub { text-align: center; color: var(--text-muted); max-width: 680px; margin: 0 auto 48px; }
.section .body-text { max-width: 760px; margin: 0 auto; color: var(--text); font-size: 17px; }
.section .body-text p { margin: 0 0 18px; }

/* ---------- 功能卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; max-width: 880px; margin: 0 auto; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}
.card .ico { width: 40px; height: 40px; margin-bottom: 14px; color: var(--accent); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--text-muted); font-size: 15px; }

/* ---------- 联系/主体信息 ---------- */
.info-grid { max-width: 680px; margin: 0 auto; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--card); box-shadow: var(--shadow); }
.info-row { display: flex; padding: 18px 26px; border-bottom: 1px solid var(--border); font-size: 16px; }
.info-row:last-child { border-bottom: none; }
.info-row .k { width: 160px; flex-shrink: 0; color: var(--text-muted); }
.info-row .v { color: var(--text); word-break: break-all; }

/* ---------- 法务页正文 ---------- */
.legal { padding: 56px 0 72px; }
.legal-doc { max-width: 800px; margin: 0 auto; }
.legal-doc h1 { font-size: 30px; margin: 0 0 6px; }
.legal-doc h2 { font-size: 21px; margin: 38px 0 12px; padding-top: 8px; }
.legal-doc h3 { font-size: 17px; margin: 24px 0 8px; }
.legal-doc p, .legal-doc li { color: var(--text); font-size: 16px; }
.legal-doc ul { padding-left: 22px; }
.legal-doc li { margin: 6px 0; }
.legal-doc hr { border: none; border-top: 1px solid var(--border); margin: 34px 0 18px; }
.legal-doc blockquote { margin: 0; padding: 12px 18px; background: var(--bg-alt); border-left: 3px solid var(--accent); border-radius: 6px; color: var(--text-muted); }
.legal-back { display: inline-block; margin-bottom: 28px; color: var(--text-muted); font-size: 15px; }

/* ---------- 页脚（备案号居中） ---------- */
.site-footer {
  background: #0f1626; color: #b8c0d4; padding: 40px 0 34px; text-align: center; font-size: 14px;
}
.site-footer a { color: #cdd6ec; }
.site-footer a:hover { color: #fff; }
.footer-links { margin-bottom: 14px; display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }
.footer-legal { color: #8893ac; line-height: 1.9; }
.footer-legal .beian { display: inline-block; margin-top: 4px; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 34px; }
  .hero .lead { font-size: 17px; }
  .section { padding: 56px 0; }
  .section h2 { font-size: 25px; }
  .cards { grid-template-columns: 1fr; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
  .info-row { flex-direction: column; gap: 4px; padding: 14px 18px; }
  .info-row .k { width: auto; }
  .brand { font-size: 17px; }
}