:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bg: #f6f4ef;
  --surface: #ffffff;
  --text: #24212b;
  --text-soft: #6d6875;
  --border: #e8e3da;
  --accent: #ff7a9e;
  --accent-deep: #c2416a;
  --accent-soft: #fff0f4;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 1px 2px rgba(30, 25, 45, 0.04), 0 6px 18px rgba(30, 25, 45, 0.06);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  font-family: var(--font);
}

.wrap { max-width: 760px; margin: 0 auto; padding: 32px 20px 0; }

/* ---------- 顶部导航 ---------- */
.topnav { background: #fbfaf7; border-bottom: 1px solid var(--border); }
.topnav-in {
  max-width: 760px; margin: 0 auto;
  padding: 8px 20px;
  display: flex; align-items: center; justify-content: flex-end; gap: 4px;
  font-size: 14px;
}
.tn-link,
.tn-menu > summary {
  color: var(--text-soft); text-decoration: none; cursor: pointer;
  padding: 5px 10px; border-radius: 8px; white-space: nowrap;
  list-style: none;
}
.tn-menu > summary::-webkit-details-marker { display: none; }
.tn-menu > summary::after { content: " ▾"; font-size: 11px; }
.tn-link:hover, .tn-menu > summary:hover { background: #f1eee8; color: var(--text); }
.tn-menu { position: relative; }
.tn-menu[open] > summary { background: #f1eee8; color: var(--text); }
.tn-panel {
  position: absolute; right: 0; top: calc(100% + 7px);
  min-width: 170px; z-index: 10;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow);
  padding: 10px 12px;
}
.tn-empty { margin: 0; color: var(--text-soft); font-size: 13px; white-space: nowrap; }

/* ---------- 顶部 ---------- */
.hero { display: flex; align-items: center; gap: 16px; padding: 8px 4px 24px; }
.logo { width: 64px; height: 64px; border-radius: 16px; box-shadow: var(--shadow); flex: 0 0 auto; }
.hero-text { min-width: 0; }
.hero h1 { margin: 0; font-size: 26px; letter-spacing: 0.5px; }
.tagline { margin: 4px 0 0; color: var(--text-soft); font-size: 14.5px; line-height: 1.6; }

/* ---------- 面板 ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  margin-bottom: 18px;
}
.panel > *:last-child { margin-bottom: 0; }
.sec { margin: 0 0 12px; font-size: 17px; }
.panel p { margin: 0 0 10px; }

/* ---------- 最新版 ---------- */
.latest { border-color: #ffd9e4; background: linear-gradient(180deg, #fff8fa, #ffffff); }
.panel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.pill {
  background: var(--accent); color: #fff; font-size: 12.5px; font-weight: 600;
  border-radius: 999px; padding: 2px 10px;
}
.panel-head strong { font-size: 20px; }
.panel-head .date { color: var(--text-soft); font-size: 13.5px; }

.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.dl-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; padding: 16px;
}
.dl-card h2 { margin: 0 0 4px; font-size: 17px; }
.dl-meta { margin: 0 0 14px; color: var(--text-soft); font-size: 13.5px; }
.btn {
  margin-top: auto; display: block; text-align: center; text-decoration: none;
  background: var(--accent); color: #fff; font-weight: 600;
  padding: 11px 16px; border-radius: 11px;
  box-shadow: 0 4px 12px rgba(255, 122, 158, 0.35);
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(255, 122, 158, 0.45); }
.btn:active { transform: translateY(0); }
.dl-note { margin: 10px 0 0; color: var(--text-soft); font-size: 12.5px; line-height: 1.6; }
.sha { margin: 8px 0 0; font-size: 12px; color: var(--text-soft); }
.sha summary { cursor: pointer; }
.sha code {
  display: block; margin-top: 6px; word-break: break-all;
  font-size: 11.5px; line-height: 1.5;
  background: var(--accent-soft); padding: 6px 8px; border-radius: 8px;
}

/* ---------- 更新说明 ---------- */
.changelog { margin: 0; padding-left: 20px; }
.changelog li { margin-bottom: 6px; }
.changelog b { color: var(--accent-deep); }

/* ---------- 安装说明 ---------- */
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.help-grid h3 { margin: 0 0 6px; font-size: 15px; }
.help-grid ol { margin: 0; padding-left: 20px; font-size: 14px; color: var(--text-soft); }
.help-grid li { margin-bottom: 5px; }

code {
  font-family: Consolas, Menlo, monospace; font-size: 0.92em;
  background: #f1eee8; padding: 1px 5px; border-radius: 5px;
}
.sha code { background: var(--accent-soft); }

/* ---------- 历史版本 ---------- */
.vers { list-style: none; margin: 0; padding: 0; }
.vers li {
  display: flex; align-items: baseline; flex-wrap: wrap;
  gap: 4px 12px; padding: 11px 0; border-bottom: 1px solid var(--border);
}
.vers li:last-child { border-bottom: 0; padding-bottom: 2px; }
.v-tag { font-weight: 700; min-width: 38px; }
.v-date { color: var(--text-soft); font-size: 13px; min-width: 86px; }
.v-dl { display: flex; flex-wrap: wrap; gap: 12px; }
.v-dl a {
  color: var(--accent-deep); font-weight: 600; font-size: 14px;
  text-decoration: none; border-bottom: 1px solid #ffd0de;
}
.v-note { flex: 1 1 180px; color: var(--text-soft); font-size: 13px; line-height: 1.6; }
.foot-note { margin: 12px 0 0; font-size: 12.5px; color: var(--text-soft); }

/* ---------- 页脚 ---------- */
.foot { padding: 6px 4px 40px; text-align: center; color: var(--text-soft); font-size: 12.5px; }
.foot p { margin: 0; }

/* ---------- 窄屏 ---------- */
@media (max-width: 620px) {
  .wrap { padding: 20px 14px 0; }
  .topnav-in { padding: 6px 14px; }
  .dl-grid, .help-grid { grid-template-columns: 1fr; }
  .hero { padding: 4px 2px 18px; gap: 13px; }
  .hero h1 { font-size: 22px; }
  .logo { width: 54px; height: 54px; border-radius: 14px; }
  .panel { padding: 16px; }
  .br-m { display: none; }
}