/* 站点基础样式：轻量、移动优先、无框架 */
:root {
  --bg: #0b0d12;
  --card: #121621;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --primary: #4c8bf5;
  --primary-600: #3b6fd1;
  --ring: rgba(76, 139, 245, 0.35);
  --border: #1f2633;
  --good: #4cc38a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background: radial-gradient(1000px 600px at 70% -20%, rgba(76,139,245,0.08), transparent 60%),
              radial-gradient(800px 500px at 10% -10%, rgba(76,139,245,0.07), transparent 60%),
              var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11,13,18,0.8);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}
.brand { display: inline-flex; gap: 10px; align-items: center; text-decoration: none; color: var(--text); }
.brand-logo { width: 28px; height: 28px; display: block; }
.brand-name { font-weight: 700; letter-spacing: 0.3px; }
.site-nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 14px; }
.site-nav a:hover { color: var(--text); }

/* Hero */
.hero { padding: 72px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(28px, 4vw, 40px); margin: 0 0 10px; }
.subtitle { color: var(--muted); margin: 0 0 22px; }
.cta { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* Buttons */
.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--border); color: var(--text); text-decoration: none; font-weight: 600; background: linear-gradient(180deg, #141a26, #0e131d); box-shadow: inset 0 1px 0 rgba(255,255,255,0.03); }
.btn:hover { border-color: #2a3446; }
.btn.primary { background: linear-gradient(180deg, #4c8bf5, #3b6fd1); border-color: transparent; box-shadow: 0 6px 18px var(--ring); }
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; }

/* Cards */
.apps-list { padding: 24px 0 64px; }
.card-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: linear-gradient(180deg, #141926, #0f1420); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; display: grid; grid-template-rows: auto 1fr; }
.card-media { padding: 20px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--border); background: #0f1420; }
.card-media img { width: 72px; height: 72px; }
.card-body { padding: 16px; }
.card-title { margin: 0 0 6px; font-size: 18px; }
.card-text { margin: 0 0 14px; color: var(--muted); }
.card-actions { display: flex; gap: 10px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 24px 0; background: rgba(10,12,18,0.7); }
.footer-inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; align-items: start; }
.footer-col h4 { margin: 0 0 10px; font-size: 14px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: .6px; }
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col a { color: var(--text); text-decoration: none; }
.footer-col a:hover { text-decoration: underline; }
.muted { color: var(--muted); }

.copyright { padding-top: 14px; border-top: 1px solid var(--border); margin-top: 14px; text-align: center; }

/* App page */
.app-hero { padding: 56px 0 12px; text-align: center; }
.app-hero h1 { margin: 6px 0; font-size: clamp(26px, 4vw, 36px); }
.app-meta { color: var(--muted); margin: 6px 0 18px; }

.features { padding: 24px 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.feature { background: linear-gradient(180deg, #141926, #0f1420); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.feature h3 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); }

.gallery { padding: 10px 0 24px; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.screenshot { background: #0e131d; border: 1px solid var(--border); border-radius: 10px; aspect-ratio: 9 / 19.5; display: flex; align-items: center; justify-content: center; color: var(--muted); }

.faq { padding: 12px 0 28px; }
.faq details { background: #0f1420; border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }

.legal {
  padding: 40px 0 60px;
}
.legal article {
  background: linear-gradient(180deg, #141926, #0f1420);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  line-height: 1.7;
}
.legal h1 { font-size: 24px; margin: 0 0 10px; }
.legal h2 { font-size: 18px; margin: 18px 0 8px; }
.legal p, .legal li { color: var(--text); }
.legal .muted { color: var(--muted); }