/* ===== 走也 Run on · 技术支持/隐私政策 站点样式 =====
   与 App 图标一致：红底径向渐变 + 白色剪影 + 大圆角 + 简洁排版 */

:root {
  --red: #E8402A;
  --red-deep: #C22B18;
  --red-grad: radial-gradient(120% 120% at 30% 25%, #FF6A50 0%, #E8402A 45%, #B72713 100%);
  --ink: #1D1D1F;
  --ink-soft: #55565A;
  --ink-faint: #8E8E93;
  --bg: #FFFFFF;
  --bg-soft: #F5F5F7;
  --card: #FFFFFF;
  --line: #E8E8ED;
  --radius: 22px;
  --shadow: 0 12px 40px rgba(29, 29, 31, .10);
  --maxw: 1080px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC",
    "Helvetica Neue", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 60px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--red-grad);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 10px rgba(232, 64, 42, .35);
}
.brand-icon svg { width: 18px; height: 18px; fill: #fff; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 15px; }
.nav-links a { color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 640px) { .nav-links .hide-sm { display: none; } }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 84px;
  background:
    radial-gradient(900px 480px at 78% -10%, rgba(232, 64, 42, .10), transparent 60%),
    radial-gradient(700px 420px at 8% 110%, rgba(232, 64, 42, .06), transparent 60%);
  text-align: center;
}
.hero h1 { font-size: clamp(34px, 6vw, 56px); font-weight: 800; letter-spacing: -1.2px; line-height: 1.18; }
.hero p { color: var(--ink-soft); font-size: 19px; max-width: 640px; margin: 20px auto 0; }
.hero-cta { margin-top: 36px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px;
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease;
  border: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--red-grad); color: #fff; box-shadow: 0 10px 26px rgba(232, 64, 42, .35); }
.btn-primary:hover { box-shadow: 0 14px 32px rgba(232, 64, 42, .45); }
.btn-ghost { background: #fff; color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink-faint); }

/* ---------- 卡片区 ---------- */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-soft); }
.section-title { font-size: 34px; font-weight: 800; letter-spacing: -0.5px; text-align: center; }
.section-sub { color: var(--ink-faint); text-align: center; margin: 10px auto 48px; max-width: 560px; font-size: 16px; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; max-width: 900px; margin: 0 auto; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 34px 30px;
  box-shadow: var(--shadow); border: 1px solid var(--line);
  transition: transform .2s ease;
}
.card:hover { transform: translateY(-6px); }
.card h3 { font-size: 21px; font-weight: 800; letter-spacing: -.3px; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 15px; }
.card a.btn { margin-top: 18px; }

/* ---------- 法律文档页 ---------- */
.doc { max-width: 820px; margin: 0 auto; padding: 64px 24px 96px; }
.doc-header { border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 36px; }
.doc-header h1 { font-size: 32px; font-weight: 800; letter-spacing: -.5px; }
.doc-header .meta { color: var(--ink-faint); font-size: 14px; margin-top: 8px; }
.doc h2 { font-size: 21px; font-weight: 700; margin: 36px 0 12px; }
.doc h3 { font-size: 17px; font-weight: 700; margin: 22px 0 8px; }
.doc p, .doc li { color: var(--ink-soft); font-size: 15.5px; }
.doc ul, .doc ol { padding-left: 22px; margin: 10px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14.5px; }
.doc th, .doc td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.doc th { background: var(--bg-soft); font-weight: 600; }
.doc .updated { color: var(--ink-faint); font-size: 13px; margin-top: 48px; border-top: 1px solid var(--line); padding-top: 16px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-soft); border-top: 1px solid var(--line); padding: 48px 0 40px; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between;
}
.footer .f-brand { font-weight: 700; font-size: 16px; margin-bottom: 10px; }
.footer .f-col h5 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); margin-bottom: 10px; }
.footer .f-col a { display: block; color: var(--ink-soft); font-size: 14.5px; padding: 3px 0; }
.footer .f-bottom {
  max-width: var(--maxw); margin: 36px auto 0; padding: 18px 24px 0;
  border-top: 1px solid var(--line); color: var(--ink-faint); font-size: 13px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}

/* ---------- 首页产品展示区（2026-09-17 新增：应用官网需要有下载入口 + 应用介绍） ---------- */
.hero-icon {
  width: 108px; height: 108px; border-radius: 24px; display: block;
  margin: 0 auto 26px; box-shadow: 0 16px 40px rgba(29, 29, 31, .18);
}
.hero .official-name { font-size: 14px; color: var(--ink-faint); margin-top: 14px; }
.hero-badge { display: inline-block; margin-top: 30px; }
.hero-badge img { height: 54px; width: auto; display: block; }
.hero-badge:hover { text-decoration: none; }
.hero-badge:hover img { opacity: .86; }
.meta-chips {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  margin-top: 26px; list-style: none; padding: 0;
}
.meta-chips li {
  font-size: 13px; color: var(--ink-soft); line-height: 1.6;
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 13px;
}
.shots {
  display: flex; gap: 20px; overflow-x: auto; padding: 4px 0 16px;
  scroll-snap-type: x mandatory;
}
.shots img {
  width: 240px; flex: 0 0 auto; display: block; border-radius: 16px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  scroll-snap-align: start;
}