/* Roxy 公开站点 — 暗色主题，与 QQ 卡片视觉呼应。
   调色板取自 QQBot/tools/card_renderer.py：
   _BG(27,30,39) _PANEL(36,40,52) _TEXT(242,244,248)
   _TEXT_DIM(180,186,200) _TEXT_FAINT(128,136,152) */

:root {
  --bg: #1b1e27;
  --panel: #242834;
  --panel-2: #2b3040;
  --text: #f2f4f8;
  --text-dim: #b4bac8;
  --text-faint: #808898;
  --green: #4caf50;
  --blue: #3a8ce8;
  --purple: #7a5ce8;
  --gold: #e8b53a;
  --cyan: #3ab4c8;
  --red: #e8503a;
  --gray: #6e748c;
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ── hero ─────────────────────────────────────────────── */
.hero {
  padding: 96px 24px 72px;
  text-align: center;
  background:
    radial-gradient(1000px 400px at 50% -10%, rgba(58, 140, 232, 0.18), transparent 70%),
    radial-gradient(700px 300px at 80% 10%, rgba(122, 92, 232, 0.14), transparent 70%);
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid rgba(58, 140, 232, 0.5);
  color: var(--blue);
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 64px;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #6fb1ff, #a98bff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.slogan { margin-top: 14px; font-size: 20px; color: var(--text-dim); }
.hero-hint { margin-top: 8px; font-size: 14px; color: var(--text-faint); }
.hero-actions { margin-top: 28px; display: flex; gap: 12px; justify-content: center; }

.btn {
  display: inline-block;
  padding: 10px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 15px;
  transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-ghost { border: 1px solid var(--gray); color: var(--text-dim); }

/* ── sections ─────────────────────────────────────────── */
.section { max-width: 960px; margin: 0 auto; padding: 56px 24px; }
.section h2 { font-size: 30px; margin-bottom: 6px; }
.section-sub { color: var(--text-faint); margin-bottom: 28px; }
.section-sub b { color: var(--text-dim); }

/* scenario cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 22px;
}
.card-ico { font-size: 28px; margin-bottom: 10px; }
.card h3 { font-size: 18px; margin-bottom: 6px; }
.card p { color: var(--text-dim); font-size: 14px; }

/* how-to */
.howto-list { display: flex; flex-direction: column; gap: 14px; }
.howto {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.howto h3 { font-size: 16px; margin-bottom: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 13px;
  background: var(--panel-2);
  color: var(--cyan);
  border: 1px solid rgba(58, 180, 200, 0.35);
  border-radius: 8px;
  padding: 5px 12px;
  cursor: pointer;
  transition: background .12s ease;
}
.chip:hover { background: #343a4c; }
.chip-inline { display: inline; padding: 2px 8px; }
.nl { margin-top: 10px; font-size: 13px; color: var(--text-faint); }
.nl-q { color: var(--gold); }
.copy-tip {
  margin-top: 12px; font-size: 13px; color: var(--green);
}

/* demo */
.demo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.demo-gallery figure {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  overflow: hidden;
}
.demo-gallery img { width: 100%; display: block; }
.demo-gallery figcaption {
  padding: 10px 14px; font-size: 13px; color: var(--text-dim);
  background: var(--panel-2);
}
.demo-placeholder {
  border: 1px dashed var(--gray);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--text-faint);
  font-size: 14px;
}

/* changelog */
.changelog-box { display: flex; flex-direction: column; gap: 18px; }
.cl-entry {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.cl-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.cl-version {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 3px 14px;
  border-radius: 999px;
}
.cl-date { color: var(--text-faint); font-size: 13px; }
.cl-change { display: flex; align-items: flex-start; gap: 10px; margin-top: 8px; }
.cl-type {
  flex: 0 0 auto;
  color: #fff;
  font-size: 12px;
  padding: 1px 10px;
  border-radius: 999px;
  margin-top: 2px;
}
.cl-text { color: var(--text-dim); font-size: 14px; }
.muted { color: var(--text-faint); font-size: 14px; }

/* footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 40px 24px 56px;
  text-align: center;
  color: var(--text-dim);
  font-size: 14px;
}
.footer p { margin: 6px 0; }
.footer .muted { margin-top: 16px; font-size: 12px; }

@media (max-width: 600px) {
  .hero { padding: 64px 20px 48px; }
  .hero h1 { font-size: 44px; }
  .slogan { font-size: 17px; }
}