/* ============================================================
   元力共生 · 原型设计系统 v0.1
   tokens + 组件 + 布局。不使用任何外部依赖。
   ============================================================ */

:root {
  --bg: #F5F7FB;
  --surface: #FFFFFF;
  --line: #E6EAF2;
  --line-strong: #D3DAE6;

  --ink: #0B1220;
  --ink-2: #334155;
  --muted: #6B7787;
  --muted-2: #94A0B2;

  --primary: #2D5BFF;
  --primary-weak: #EDF2FF;
  --primary-ink: #FFFFFF;

  --ok: #0E9F6E;
  --ok-weak: #E7F8F0;
  --warn: #B7791F;
  --warn-weak: #FFF6E5;
  --danger: #D92D20;
  --danger-weak: #FEECEB;
  --info: #175CD3;
  --info-weak: #EAF2FF;

  --nav: #0B1220;
  --nav-ink: #AEB7C6;
  --nav-dim: #5D6B82;

  --r: 14px;
  --r-sm: 9px;
  --shadow: 0 1px 2px rgba(11, 18, 32, .04), 0 10px 28px -14px rgba(11, 18, 32, .14);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p { margin: 0; }
a { color: var(--primary); text-decoration: none; }
button { font-family: inherit; }

.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.strong { font-weight: 650; }
.hidden { display: none !important; }

.app { display: flex; min-height: 100vh; }

/* ---------------- 侧栏 ---------------- */

.sidebar {
  width: 246px;
  flex: 0 0 246px;
  background: var(--nav);
  color: var(--nav-ink);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 22px 20px 18px;
}

.logo { width: 30px; height: 30px; color: #6E8BFF; flex: 0 0 auto; }

.brand-t { display: flex; flex-direction: column; line-height: 1.25; }
.brand-t strong { color: #fff; font-size: 15px; letter-spacing: .01em; }
.brand-t span { color: var(--nav-dim); font-size: 11px; margin-top: 2px; }

#nav { flex: 1 1 auto; overflow-y: auto; padding: 4px 12px 12px; }
#nav::-webkit-scrollbar { width: 6px; }
#nav::-webkit-scrollbar-thumb { background: #263043; border-radius: 99px; }

.nav-label {
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--nav-dim);
  padding: 16px 10px 7px;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--nav-ink);
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: background .14s, color .14s;
}

.nav-item:hover { background: rgba(255, 255, 255, .06); color: #fff; }

.nav-item.on {
  background: linear-gradient(90deg, rgba(45, 91, 255, .26), rgba(45, 91, 255, .08));
  color: #fff;
}

.nav-item.on::before {
  content: "";
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 2.5px;
  border-radius: 2px;
  background: #6E8BFF;
}

.nav-item .k { margin-left: auto; font-size: 11px; color: var(--nav-dim); }
.nav-item.on .k { color: #9DB2FF; }

.side-foot {
  border-top: 1px solid #1A2334;
  padding: 13px 20px;
  font-size: 11px;
  color: var(--nav-dim);
  display: flex;
  align-items: center;
  gap: 7px;
}

.dot { width: 6px; height: 6px; border-radius: 50%; background: #34D399; flex: 0 0 auto; }

/* ---------------- 主区 ---------------- */

.main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: 62px;
  flex: 0 0 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 28px;
  background: rgba(245, 247, 251, .88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.crumb { font-size: 12.5px; color: var(--muted); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.crumb b { color: var(--ink-2); font-weight: 600; }
.top-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.top-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

/* 移动端汉堡按钮与抽屉遮罩：桌面隐藏 */
.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
}
.menu-btn:hover { border-color: #B9C3D2; }
.menu-btn svg { width: 18px; height: 18px; }

.side-close { display: none; }

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, .5);
  opacity: 0;
  pointer-events: none;
  z-index: 55;
}

.role-chip {
  font-size: 12px;
  color: var(--info);
  background: var(--info-weak);
  border: 1px solid #D6E4FF;
  padding: 4px 10px;
  border-radius: 999px;
}

.view { padding: 24px 28px 36px; max-width: 1440px; width: 100%; flex: 1 1 auto; }

/* ---------------- 页脚 ---------------- */

.site-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 28px 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, .55);
}

.site-footer .sf-left strong { color: var(--ink-2); font-weight: 650; }

.sf-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-weak);
  border: 1px solid #D6E4FF;
  border-radius: 999px;
  padding: 6px 14px;
  white-space: nowrap;
  transition: .14s;
}

.sf-link:hover { background: #E2EAFF; border-color: #BFCFFF; }
.sf-link .sf-meta { font-weight: 400; font-size: 11.5px; color: #5B6B84; }

/* ---------------- 页头 ---------------- */

.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 4px;
}

.page-title { font-size: 22px; font-weight: 650; letter-spacing: -.01em; line-height: 1.35; }
.page-sub { font-size: 13px; color: var(--muted); margin-top: 5px; }
.page-actions { display: flex; gap: 9px; flex: 0 0 auto; padding-top: 4px; }

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 550;
  cursor: pointer;
  white-space: nowrap;
  transition: .14s;
}

.btn:hover { border-color: #B9C3D2; background: #FAFBFD; }

.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(45, 91, 255, .28);
}
.btn.primary:hover { background: #2450E6; border-color: #2450E6; }

.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { background: #C02419; }

.btn.ghost { background: transparent; }
.btn.sm { height: 28px; padding: 0 10px; font-size: 12px; border-radius: 7px; }
.btn:disabled { opacity: .45; cursor: not-allowed; background: #F2F4F8; border-color: var(--line); color: var(--muted); }

/* ---------------- 卡片 / 网格 ---------------- */

.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mt8 { margin-top: 8px; } .mt12 { margin-top: 12px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.card-hd h3 { font-size: 14px; font-weight: 650; }
.card-hd .hint { font-size: 12px; color: var(--muted); }
.card-bd { padding: 18px; }
.card-bd.tight { padding: 12px 18px; }
.card-ft {
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: #FAFBFD;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ---------------- 指标 ---------------- */

.stat { padding: 16px 18px; }
.stat-label { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.stat-value { font-size: 27px; font-weight: 660; letter-spacing: -.02em; margin-top: 6px; line-height: 1.2; }
.stat-value .unit { font-size: 14px; font-weight: 550; color: var(--muted); margin-left: 2px; }
.stat-meta { font-size: 12px; color: var(--muted); margin-top: 8px; }

.delta { font-size: 11.5px; font-weight: 600; padding: 1px 6px; border-radius: 5px; }
.delta.up { color: var(--ok); background: var(--ok-weak); }
.delta.down { color: var(--danger); background: var(--danger-weak); }

/* ---------------- 进度条 ---------------- */

.bar { height: 6px; background: #EDF0F6; border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 99px; background: var(--primary); transition: width .3s; }
.bar.tall { height: 9px; }
.bar > i.ok { background: var(--ok); }
.bar > i.warn { background: #E9A23B; }
.bar > i.danger { background: var(--danger); }
.bar > i.slim { background: linear-gradient(90deg, #6E8BFF, #2D5BFF); }

/* ---------------- 徽标 ---------------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 550;
  padding: 2px 9px;
  border-radius: 999px;
  line-height: 1.7;
  white-space: nowrap;
}

.pill-ok { color: var(--ok); background: var(--ok-weak); }
.pill-warn { color: var(--warn); background: var(--warn-weak); }
.pill-danger { color: var(--danger); background: var(--danger-weak); }
.pill-info { color: var(--info); background: var(--info-weak); }
.pill-neutral { color: #475569; background: #F1F4F9; }
.pill-primary { color: var(--primary); background: var(--primary-weak); }
.pill-dot::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

.tag {
  display: inline-block;
  font-size: 11.5px;
  color: #475569;
  background: #F3F6FA;
  border: 1px solid #E6EAF2;
  padding: 1px 8px;
  border-radius: 6px;
  margin: 0 4px 4px 0;
}

/* ---------------- 表格 ---------------- */

.table-wrap { overflow-x: auto; }

table.tb { width: 100%; border-collapse: collapse; font-size: 13.5px; }

table.tb th {
  text-align: left;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
  padding: 9px 14px;
  background: #FAFBFD;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

table.tb td {
  padding: 12px 14px;
  border-bottom: 1px solid #EFF2F7;
  vertical-align: middle;
}

table.tb tbody tr:hover { background: #FAFCFF; }
table.tb tbody tr:last-child td { border-bottom: 0; }
table.tb .r { text-align: right; }
table.tb .muted-cell { color: var(--muted); font-size: 12.5px; }

/* ---------------- 键值 ---------------- */

.kv { display: grid; grid-template-columns: 110px 1fr; gap: 10px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; color: var(--ink-2); }

/* ---------------- 时间线 ---------------- */

.timeline { position: relative; padding-left: 20px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 7px; bottom: 9px;
  width: 1px;
  background: var(--line-strong);
}

.tl-item { position: relative; padding-bottom: 18px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item .tl-dot {
  position: absolute;
  left: -20px; top: 5px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--line-strong);
}
.tl-item.done .tl-dot { background: var(--ok); border-color: var(--ok); }
.tl-item.now .tl-dot { background: var(--primary); border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-weak); }
.tl-item .tl-t { font-size: 13px; font-weight: 600; }
.tl-item .tl-d { font-size: 12px; color: var(--muted); margin-top: 1px; }

/* ---------------- 播放器 ---------------- */

.player {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  background: radial-gradient(120% 130% at 18% 6%, #1E293B 0%, #0B1220 62%);
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid #1A2334;
}

.player .play {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .13);
  border: 1px solid rgba(255, 255, 255, .32);
  display: grid; place-items: center;
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(4px);
}

.player .player-meta {
  position: absolute; left: 14px; bottom: 11px;
  color: rgba(255, 255, 255, .82);
  font-size: 11.5px;
  letter-spacing: .02em;
}

.player .player-tag {
  position: absolute; right: 14px; top: 12px;
  font-size: 11px; color: rgba(255, 255, 255, .75);
  border: 1px solid rgba(255, 255, 255, .22);
  padding: 2px 8px; border-radius: 999px;
}

.lesson {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 12.8px;
  color: var(--ink-2);
  cursor: pointer;
}
.lesson:hover { background: #F6F8FC; }
.lesson.on { background: var(--primary-weak); color: var(--info); font-weight: 600; }
.lesson .idx { width: 16px; color: var(--muted-2); font-variant-numeric: tabular-nums; }
.lesson .st { margin-left: auto; font-size: 11px; color: var(--muted-2); }
.lesson.done .st { color: var(--ok); }

/* ---------------- Tabs ---------------- */

.tabbar {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  padding: 0 18px;
  background: #FCFDFF;
  overflow-x: auto;
}

.tab {
  border: 0;
  background: transparent;
  padding: 11px 12px 10px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
}

.tab:hover { color: var(--ink-2); }
.tab.on { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------------- 列表行 ---------------- */

.list-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #EFF2F7;
}
.list-row:last-child { border-bottom: 0; }
.list-row .lr-main { flex: 1 1 auto; min-width: 0; }
.list-row .lr-t { font-size: 13.2px; font-weight: 550; }
.list-row .lr-d { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ---------------- 会员卡 ---------------- */

.member-card {
  border-radius: 16px;
  padding: 24px 26px;
  color: #fff;
  background: linear-gradient(125deg, #0B1220 0%, #16307A 52%, #2D5BFF 100%);
  position: relative;
  overflow: hidden;
}
.member-card::after {
  content: "";
  position: absolute;
  width: 320px; height: 320px;
  right: -90px; top: -140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 65%);
}
.member-card .mc-k { font-size: 11.5px; letter-spacing: .12em; color: rgba(255, 255, 255, .62); text-transform: uppercase; }
.member-card .mc-t { font-size: 20px; font-weight: 650; margin-top: 8px; letter-spacing: -.01em; }
.member-card .mc-m { font-size: 12.5px; color: rgba(255, 255, 255, .74); margin-top: 8px; }
.member-card .mc-actions { position: absolute; right: 26px; top: 24px; z-index: 2; }
.member-card .btn { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); color: #fff; }
.member-card .btn:hover { background: rgba(255, 255, 255, .22); }

/* ---------------- 等级徽章 ---------------- */

.level-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--primary-weak);
  border: 1px solid #DCE6FF;
}
.level-badge .lv { font-size: 30px; font-weight: 700; color: var(--primary); letter-spacing: -.03em; line-height: 1; }
.level-badge .lv-n { font-size: 13px; color: var(--info); font-weight: 600; }

/* ---------------- Chips ---------------- */

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 12.5px;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  padding: 4px 11px;
  border-radius: 999px;
  cursor: pointer;
}
.chip.on { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------------- 标注 ---------------- */

.note {
  display: none;
  margin-top: 14px;
  padding: 9px 12px;
  border: 1px dashed #E9A23B;
  border-radius: 9px;
  background: #FFFCF3;
  color: #7A5200;
  font-size: 12px;
  line-height: 1.65;
}
body.annotate .note { display: block; }
.note .fr {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #8A5A00;
  background: #FDEBC8;
  border-radius: 4px;
  padding: 0 5px;
  margin-right: 6px;
}

/* ---------------- 提示条 ---------------- */

.tip {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 11px 14px;
  border-radius: 10px;
  background: var(--info-weak);
  border: 1px solid #DBE8FF;
  font-size: 12.5px;
  color: #1D3C74;
}
.tip.warn { background: var(--warn-weak); border-color: #F6E2B8; color: #7A5200; }
.tip.danger { background: var(--danger-weak); border-color: #FBD5D2; color: #8A1F16; }

/* ---------------- 评分行 ---------------- */

.rubric-row { display: grid; grid-template-columns: 1fr 120px 60px; gap: 12px; align-items: center; padding: 7px 0; font-size: 13px; }
.rubric-row .rr-k { color: var(--ink-2); }
.rubric-row .rr-v { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); font-size: 12.5px; }
.rubric-row .rr-s { text-align: right; font-weight: 650; font-variant-numeric: tabular-nums; }

/* ---------------- 表单 ---------------- */

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12.5px; color: var(--muted); }
.inp, textarea.inp, select.inp {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 8px 11px;
  font-size: 13px;
  font-family: inherit;
  color: var(--ink-2);
  background: #fff;
  outline: none;
}
.inp:focus, textarea.inp:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(45, 91, 255, .12); }
textarea.inp { min-height: 74px; resize: vertical; line-height: 1.6; }

input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 5px; border-radius: 99px; background: #E9EDF5; outline: none; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--primary); border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(45, 91, 255, .4); cursor: pointer;
}

.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); }
.check i {
  width: 16px; height: 16px; border-radius: 4px;
  background: var(--ok); color: #fff;
  display: grid; place-items: center;
  font-size: 10px; font-style: normal; flex: 0 0 auto;
}
.check.off i { background: #E9EDF5; color: #A9B4C4; }

/* ---------------- 辅助 ---------------- */

.row { display: flex; align-items: center; gap: 10px; }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }
.col { display: flex; flex-direction: column; }
.gap6 { gap: 6px; } .gap10 { gap: 10px; } .gap14 { gap: 14px; } .gap18 { gap: 18px; }

.divider { height: 1px; background: var(--line); margin: 14px 0; }

.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, #6E8BFF, #2D5BFF);
  color: #fff; font-size: 12px; font-weight: 600;
  display: grid; place-items: center; flex: 0 0 auto;
}

.stars { color: #F59E0B; letter-spacing: 2px; font-size: 13px; }

.big-num { font-size: 34px; font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }

/* ---------------- Toast ---------------- */

.toast {
  position: fixed;
  left: 50%; bottom: 32px;
  transform: translate(-50%, 14px);
  background: #0B1220;
  color: #fff;
  font-size: 12.5px;
  padding: 9px 16px;
  border-radius: 9px;
  box-shadow: 0 12px 32px rgba(11, 18, 32, .26);
  opacity: 0;
  pointer-events: none;
  transition: .22s;
  z-index: 90;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------------- 响应 ---------------- */

@media (max-width: 1180px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .app { flex-direction: column; }

  /* 抽屉式侧栏：默认移出屏幕，由顶栏汉堡按钮打开 */
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    width: 268px;
    flex: 0 0 auto;
    z-index: 60;
    transform: translateX(-100%);
    transition: transform .22s ease;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .38);
  }
  .sidebar.open { transform: translateX(0); }

  .side-close {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    right: 12px; top: 18px;
    width: 28px; height: 28px;
    border: 1px solid #243044;
    border-radius: 8px;
    background: transparent;
    color: var(--nav-ink);
    font-size: 13px;
    cursor: pointer;
  }
  .side-close:hover { background: rgba(255, 255, 255, .08); color: #fff; }

  .menu-btn { display: inline-flex; }

  .scrim {
    position: fixed;
    inset: 0;
    background: rgba(11, 18, 32, .5);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease;
    z-index: 55;
  }
  .scrim.on { opacity: 1; pointer-events: auto; }

  body.menu-open { overflow: hidden; }

  .main { width: 100%; }

  /* 内联 grid-template-columns 优先级高于类，这里强制单列 */
  .grid.g2, .grid.g3, .grid.g4 { grid-template-columns: 1fr !important; }

  .view { padding: 16px 14px 28px; }
  .topbar { padding: 0 14px; gap: 10px; }
  .page-head { flex-direction: column; gap: 12px; }
  .page-actions { padding-top: 0; flex-wrap: wrap; }
  .page-title { font-size: 20px; }

  .site-footer { flex-direction: column; align-items: flex-start; padding: 13px 14px 18px; }
  .site-footer .sf-link { width: 100%; justify-content: center; }

  .rubric-row { grid-template-columns: 1fr 96px 54px; gap: 8px; }
  .kv { grid-template-columns: 96px 1fr; }
}

@media (max-width: 560px) {
  .role-chip { display: none; }
  .top-actions .btn { height: 30px; padding: 0 10px; font-size: 12px; }
  .stat-value { font-size: 24px; }
  .page-actions .btn { flex: 1 1 auto; }
  .card-hd, .card-bd, .card-ft { padding-left: 14px; padding-right: 14px; }
  .tabbar { padding: 0 8px; }
  .crumb { font-size: 12px; }
}