* { box-sizing: border-box; }

:root {
  --bg: #f5f5f2;
  --surface: #ffffff;
  --surface-soft: #fafaf8;
  --text: #202124;
  --muted: #74777c;
  --line: #e7e7e2;
  --blue: #1677ff;
  --blue-soft: #eef6ff;
  --green: #2c9c69;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

html, body { height: 100%; }
body {
  display: flex; flex-direction: column;
  margin: 0;
  width: 100%;
  background: var(--bg); color: var(--text);
  font: 16px/1.7 var(--font);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ===== Header ===== */
.mh { flex-shrink: 0; background: var(--surface); border-bottom: 1px solid var(--line); }
.mh-row { display: flex; align-items: center; gap: 8px; padding: 0 12px; height: 65px; }
.mh-brand {
  width: 34px; height: 34px; flex-shrink: 0; display: grid; place-items: center;
  border-radius: 10px; background: var(--text); color: #fff;
  font-size: 14px; font-weight: 800;
}
.mh-nav { display: flex; flex: 1; gap: 0; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; margin-left: 6px; }
.mh-nav::-webkit-scrollbar { display: none; }
.mh-nav a { flex-shrink: 0; padding: 4px 8px; font-size: 18px; font-weight: 600; color: #5f6368; white-space: nowrap; }
.mh-nav a.active { color: var(--text); }


/* ===== Footer ===== */
.mf { flex-shrink: 0; padding: 16px 14px 24px; text-align: center; color: var(--muted); font-size: 13px; }
.mf nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-bottom: 8px; }
.mf a:hover { color: var(--blue); }
.mf p { margin: 0; }

/* ===== 面包屑 ===== */
.mbc { display: flex; align-items: center; gap: 6px; padding: 8px 14px 2px; color: var(--muted); font-size: 14px; }
.mbc span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mbc a:hover { color: var(--blue); }

/* ===== 页面内容 ===== */
main { flex: 1; }
.mp { padding: 14px 0 24px; }

/* ===== 详情摘要 ===== */
.md-summary-panel,
.md-content-panel {
  margin: 0 0 12px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}
.md-intro { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 14px; align-items: start; padding: 0 0 12px; border-bottom: 1px solid var(--line); }
.md-intro img { width: 100px; height: 100px; object-fit: cover; border-radius: 16px; border: 1px solid var(--line); background: var(--surface-soft); }
.md-info { overflow: hidden; }
.md-info h1 { margin: 0 0 4px; font-size: 22px; line-height: 1.25; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.md-desc { margin: 0 0 8px; color: var(--muted); font-size: 14px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-clamp: 2; overflow: hidden; }
.md-tags { display: flex; flex-wrap: wrap; gap: 4px; max-height: 25px; overflow: hidden; }
.md-tags a { padding: 2px 7px; border-radius: 99px; background: #f2f2ef; color: #66696e; font-size: 13px; font-weight: 600; }
.md-tags a:hover { background: var(--blue-soft); color: var(--blue); }

/* ===== 下载信息 ===== */
.md-params { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.md-params dt { color: var(--muted); font-size: 12px; margin-bottom: 1px; }
.md-params dd { margin: 0; font-size: 15px; font-weight: 700; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.md-btn { display: grid; place-items: center; height: 48px; margin: 12px 0 0; border-radius: 14px; background: var(--blue); color: #fff; font-size: 16px; font-weight: 700; width: 100%; box-shadow: 0 8px 20px rgba(22,119,255,.2); }
.md-btn:hover { background: #0969da; }

/* ===== 正文 ===== */
.resource-content { color: #4e5156; padding: 0; }
.resource-content h2 { margin: 0; padding: 14px 0 0; font-size: 19px; line-height: 1.35; letter-spacing: -.3px; }
.resource-content h2:first-child { padding-top: 0; }
.resource-content h2::before { content: ""; display: inline-block; width: 6px; height: 6px; margin: 0 8px 3px 0; border-radius: 50%; background: var(--blue); }
.resource-content p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.content-note {
  margin-top: 8px;
  padding: 12px 12px 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  color: #4e5156;
  font-size: 14px;
  line-height: 1.65;
}

/* ===== 推荐面板 ===== */
.ms-panel { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); overflow: hidden; margin-bottom: 14px; }
.ms-panel-heading { padding: 14px 12px 10px; }
.ms-panel-heading span { display: block; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
.ms-panel-heading h3 { margin: 5px 0 0; font-size: 18px; line-height: 1.35; }
.ms-list { list-style: none; padding: 0; margin: 0; counter-reset: li; }
.ms-list li { counter-increment: li; display: grid; grid-template-columns: 28px minmax(0, 1fr); align-items: start; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.ms-list li:last-child { border-bottom: 0; }
.ms-list li::before { content: counter(li, decimal-leading-zero); color: var(--blue); font-size: 11px; font-weight: 800; font-style: normal; align-self: start; margin-top: 2px; }
.ms-list a { display: block; }
.ms-list strong { font-size: 16px; font-weight: 700; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ms-list a:hover strong { color: var(--blue); }
.ms-tgs { grid-column: 2; display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; max-height: 25px; overflow: hidden; }
.ms-tgs a { padding: 1px 6px; border-radius: 99px; background: #f2f2ef; color: #66696e; font-size: 13px; font-weight: 600; }
.ms-tgs a:hover { background: var(--blue-soft); color: var(--blue); }

.ms-tagcloud { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 12px 14px; }
.ms-tagcloud a { padding: 4px 12px; border-radius: 99px; background: #f2f2ef; color: #66696e; font-size: 13px; font-weight: 600; }
.ms-tagcloud a:hover { background: var(--blue-soft); color: var(--blue); }

/* ===== 移动端分类页 ===== */
.mc-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 6px; }
.mc-head h1 { margin: 0; font-size: 22px; }
.mc-desc { margin: 0 0 14px; color: var(--muted); font-size: 14px; line-height: 1.55; }
.mc-intro-panel,
.mc-subnav-panel {
  margin: 0 0 12px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}
.mc-intro-panel .mc-desc { margin-bottom: 0; }
.mc-panel-heading { padding: 14px 12px 10px; }
.mc-panel-heading span {
  display: block;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.mc-panel-heading h2 { margin: 5px 0 0; font-size: 18px; line-height: 1.35; }

.mc-list { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--surface); }
.mc-row { display: flex; gap: 14px; padding: 12px; border-bottom: 1px solid var(--line); align-items: center; }
.mc-row:last-child { border-bottom: 0; }
.mc-cover-link { display: block; flex: 0 0 100px; }
.mc-row img { width: 100px; height: 100px; display: block; object-fit: cover; border-radius: 14px; border: 1px solid var(--line); background: var(--surface-soft); }
.mc-info { min-width: 0; flex: 1; align-self: center; }
.mc-title { display: block; font-size: 16px; font-weight: 700; line-height: 1.3; color: inherit; text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mc-title:hover { color: var(--blue); }
.mc-info p { margin: 2px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-clamp: 2; overflow: hidden; }
.mc-subnav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; padding: 0; }
.mc-subnav::-webkit-scrollbar { display: none; }
.mc-subnav a { flex-shrink: 0; padding: 4px 10px; border-radius: 99px; background: #f2f2ef; color: #66696e; font-size: 15px; font-weight: 600; white-space: nowrap; }
.mc-subnav a.active { background: var(--blue); color: #fff; }
.mc-subnav a:hover:not(.active) { background: var(--blue-soft); color: var(--blue); }

.mc-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.mc-tags a { padding: 2px 8px; border-radius: 99px; background: #f2f2ef; color: #66696e; font-size: 11px; font-weight: 600; }
.mc-tags a:hover { background: var(--blue-soft); color: var(--blue); }

.mc-page { display: flex; align-items: center; justify-content: center; gap: 6px; margin: 0; padding: 14px 12px 16px; flex-wrap: wrap; }
.mc-page a, .mp-on, .mp-off { display: grid; place-items: center; min-width: 38px; height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; font-weight: 600; color: var(--text); text-decoration: none; }
.mc-page a:hover { border-color: var(--blue); color: var(--blue); }
.mp-on { border-color: var(--blue); background: var(--blue); color: #fff; }
.mp-off { color: #ccc; cursor: default; }

/* ===== 移动端404 ===== */
.mnf { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 40px 20px 60px; }
.mnf-box { text-align: center; }
.mnf-code { margin: 0 0 4px; font-size: 80px; font-weight: 700; line-height: 1; color: var(--text); letter-spacing: -3px; }
.mnf-label { margin: 0 0 8px; color: var(--blue); font-size: 18px; font-weight: 600; }
.mnf-desc { margin: 0 0 28px; color: var(--muted); font-size: 15px; }
.mnf-actions { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.mnf-btn { display: grid; place-items: center; width: 100%; max-width: 280px; height: 46px; border: 1px solid var(--line); border-radius: 12px; color: var(--text); font-size: 15px; font-weight: 600; text-decoration: none; }
.mnf-btn:hover { border-color: var(--blue); color: var(--blue); }
.mnf-btn-primary { border-color: var(--blue); background: var(--blue); color: #fff; }
.mnf-btn-primary:hover { background: #0969da; color: #fff; }