/* ═════════════════════════════════════════════════════════════
   CTGU · Design System v12.0 — Appica Minimal
   全站唯一样式源：token / base / 组件 / 页面 全部收敛于此
   风格：纯白纸面 · 近黑主文字 · 细边框分层 · 圆角卡片 · 阴影归零
   进度范式：标签左 · 数值右 · 细轨道在下（环形值居中，标签在环下）
   ═════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ============================================================
   1. PRIMITIVES
   ============================================================ */
:root {
  color-scheme: light;

  /* neutral scale */
  --n-0: #ffffff;
  --n-25: #fafafa;
  --n-50: #f5f5f5;
  --n-100: #ececee;
  --n-200: #e4e4e7;
  --n-300: #d4d4d8;
  --n-400: #a1a1aa;
  --n-500: #71717a;
  --n-600: #52525b;
  --n-700: #3f3f46;
  --n-800: #27272a;
  --n-900: #18181b;
  --n-950: #0a0a0c;

  /* semantic hues */
  --h-success: oklch(62% 0.17 149);
  --h-warning: oklch(75% 0.16 70);
  --h-danger: oklch(58% 0.22 27);
  --h-info: oklch(58% 0.19 255);
}

/* ============================================================
   2. SEMANTIC TOKENS
   ============================================================ */
:root {
  --background: var(--n-0);
  --foreground: var(--n-950);

  --card: var(--n-0);
  --card-foreground: var(--n-950);
  --secondary: var(--n-100);
  --secondary-hover: var(--n-200);
  --muted-foreground: var(--n-500);

  --border: var(--n-200);
  --border-strong: var(--n-300);
  --input-border: var(--n-300);
  --ring: var(--n-900);

  /* semantic emphasis + subtle surfaces (Appica 范式) */
  --success-emphasis: var(--h-success);
  --success-subtle: color-mix(in srgb, var(--h-success) 12%, white);
  --warning-emphasis: color-mix(in srgb, var(--h-warning) 78%, black);
  --warning-subtle: color-mix(in srgb, var(--h-warning) 14%, white);
  --danger-emphasis: var(--h-danger);
  --danger-subtle: color-mix(in srgb, var(--h-danger) 10%, white);
  --info-emphasis: var(--h-info);
  --info-subtle: color-mix(in srgb, var(--h-info) 10%, white);

  --overlay: rgb(10 10 12 / 44%);
  --shadow-pop: 0 1px 2px rgb(10 10 12 / 5%), 0 8px 24px -8px rgb(10 10 12 / 12%);
  --shadow-float: 0 2px 6px rgb(10 10 12 / 6%), 0 20px 48px -12px rgb(10 10 12 / 22%);

  /* typography */
  --font-sans: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;

  /* radius */
  --radius-xl: 14px;
  --radius-lg: 10px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-full: 999px;

  /* spacing (4pt) */
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px;

  /* motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 150ms;
  --dur-med: 260ms;
}

.dark {
  color-scheme: dark;

  --background: var(--n-950);
  --foreground: var(--n-50);

  --card: #121214;
  --card-foreground: var(--n-50);
  --secondary: #1d1d21;
  --secondary-hover: #28282d;
  --muted-foreground: var(--n-400);

  --border: #26262a;
  --border-strong: #3a3a40;
  --input-border: #3a3a40;
  --ring: var(--n-100);

  --success-emphasis: color-mix(in srgb, var(--h-success) 88%, white);
  --success-subtle: color-mix(in srgb, var(--h-success) 18%, var(--n-950));
  --warning-emphasis: color-mix(in srgb, var(--h-warning) 92%, white);
  --warning-subtle: color-mix(in srgb, var(--h-warning) 16%, var(--n-950));
  --danger-emphasis: color-mix(in srgb, var(--h-danger) 84%, white);
  --danger-subtle: color-mix(in srgb, var(--h-danger) 15%, var(--n-950));
  --info-emphasis: color-mix(in srgb, var(--h-info) 80%, white);
  --info-subtle: color-mix(in srgb, var(--h-info) 16%, var(--n-950));

  --overlay: rgb(0 0 0 / 60%);
}

/* ============================================================
   3. RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}
html, body { margin: 0; padding: 0; }

body {
  min-height: 100dvh;
  overflow-x: clip;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

::selection { background: color-mix(in srgb, var(--foreground) 14%, transparent); }

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.num, .tabular { font-variant-numeric: tabular-nums; }

/* ============================================================
   4. LAYOUT & UTILITIES
   ============================================================ */
.container-xl {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-10);
}
.container-wide {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-10);
}

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.caps-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--foreground);
}
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
}

.page-enter { animation: pageIn 0.45s var(--ease-out) both; }
@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out);
}
.reveal.in { opacity: 1; transform: translateY(0); }

.stagger > * { transition-delay: calc(var(--i, 0) * 60ms); }
.stagger > *:nth-child(2) { transition-delay: 60ms; }
.stagger > *:nth-child(3) { transition-delay: 120ms; }
.stagger > *:nth-child(4) { transition-delay: 180ms; }
.stagger > *:nth-child(5) { transition-delay: 240ms; }

.section-block { margin-top: var(--space-8); }
.section-block > .section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.section-head-info { font-size: 13px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }

.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* ============================================================
   5. NAVIGATION — sticky hairline bar + segmented control
   ============================================================ */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--background) 86%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  height: 56px;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-md);
  background: var(--foreground);
  color: var(--background);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}
.brand-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-tagline { font-size: 13px; color: var(--muted-foreground); }

.nav-right { display: flex; align-items: center; gap: var(--space-2); }
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  font-size: 13px;
  font-weight: 500;
  max-width: 160px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-icon { width: 14px; height: 14px; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted-foreground);
  transition: color var(--dur-fast) ease, background var(--dur-fast) ease;
}
.nav-link:hover { color: var(--foreground); background: var(--secondary); }
.hamburger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--foreground);
  transition: background var(--dur-fast) ease;
}
.hamburger-btn:hover { background: var(--secondary); }

/* segmented control（滑动指示器 Tab） */
.switch-tab {
  position: relative;
  display: inline-flex;
  padding: 3px;
  border-radius: var(--radius-full);
  background: var(--secondary);
}
.switch-tab-bg {
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: 0;
  width: 0;
  border-radius: var(--radius-full);
  background: var(--background);
  box-shadow: 0 1px 3px rgb(10 10 12 / 10%), 0 0 0 1px rgb(10 10 12 / 4%);
  transition: transform var(--dur-med) var(--ease-out), width var(--dur-med) var(--ease-out);
}
.switch-tab-item {
  position: relative;
  z-index: 1;
  border: 0;
  background: transparent;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted-foreground);
  transition: color var(--dur-fast) ease;
  white-space: nowrap;
}
.switch-tab-item.active { color: var(--foreground); }
.switch-tab-item:hover:not(.active) { color: var(--foreground); }

/* 单页双面板切换容器 */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: pageIn 0.35s var(--ease-out) both; }

/* ============================================================
   6. PAGE HEADER
   ============================================================ */
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.page-header-title { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; }
.page-header-sub { margin-top: 6px; font-size: 14px; color: var(--muted-foreground); }
.page-header-actions { display: flex; align-items: center; gap: var(--space-2); }

.page-hero { padding: var(--space-2) 0 var(--space-6); }
.page-hero-title { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.page-hero-sub { margin-top: 6px; font-size: 14px; color: var(--muted-foreground); }

.sem-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: var(--card);
  font-size: 13.5px;
  font-weight: 500;
  transition: border-color var(--dur-fast) ease, background var(--dur-fast) ease;
}
.sem-trigger:hover { background: var(--secondary); }
.sem-trigger svg { color: var(--muted-foreground); }
.sem-trigger-label { max-width: 180px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ============================================================
   7. ANNOUNCEMENT
   ============================================================ */
.announcement {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--info-subtle);
}
.announcement-badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  border-radius: var(--radius-full);
  background: var(--info-emphasis);
  color: white;
  font-size: 12px;
  font-weight: 600;
}
.announcement-content { min-width: 0; font-size: 13.5px; line-height: 1.5; }
.announcement-content strong { font-weight: 600; }
.announcement-content span { color: color-mix(in srgb, var(--foreground) 72%, transparent); }

/* ============================================================
   8. BUTTONS
   ============================================================ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  user-select: none;
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease,
              border-color var(--dur-fast) ease, opacity var(--dur-fast) ease,
              transform var(--dur-fast) ease;
}
.btn:active:not(:disabled) { transform: translateY(0.5px); }
.btn:disabled { opacity: 0.45; pointer-events: none; }
.btn svg { flex-shrink: 0; }

.btn-primary { background: var(--foreground); color: var(--background); }
.btn-primary:hover { background: color-mix(in srgb, var(--foreground) 86%, var(--background)); }

.btn-soft { background: var(--secondary); color: var(--foreground); }
.btn-soft:hover { background: var(--secondary-hover); }

.btn-outline { background: var(--card); border-color: var(--border-strong); color: var(--foreground); }
.btn-outline:hover { background: var(--secondary); }

.btn-ghost { color: var(--foreground); }
.btn-ghost:hover { background: var(--secondary); }

.btn-danger { background: var(--danger-subtle); color: var(--danger-emphasis); }
.btn-danger:hover { background: color-mix(in srgb, var(--h-danger) 18%, white); }
.dark .btn-danger:hover { background: color-mix(in srgb, var(--h-danger) 26%, var(--n-950)); }

.btn-sm { height: 30px; padding: 0 11px; font-size: 13px; border-radius: var(--radius-md); gap: 6px; }
.btn-lg { height: 44px; padding: 0 20px; font-size: 15px; border-radius: var(--radius-lg); }

.btn .btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
}
.btn.loading .btn-spinner { display: inline-block; }
.btn.loading .btn-text { opacity: 0.85; }
@keyframes spin { to { transform: rotate(360deg); } }

.qq-badge { display: inline-flex; width: 18px; height: 18px; color: var(--info-emphasis); }

/* ============================================================
   9. FORMS
   ============================================================ */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-4); }
.field label { font-size: 13px; font-weight: 500; }

input[type="text"], input[type="password"], input[type="email"], textarea, select {
  width: 100%;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-lg);
  background: var(--card);
  color: var(--foreground);
  font-size: 14px;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
textarea { height: auto; min-height: 76px; padding: 10px 12px; resize: vertical; line-height: 1.5; }
input::placeholder, textarea::placeholder { color: var(--n-400); }
.dark input::placeholder, .dark textarea::placeholder { color: var(--n-600); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 14%, transparent);
}
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 49%, var(--muted-foreground) 50%),
                    linear-gradient(-45deg, transparent 49%, var(--muted-foreground) 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

.admin-input { width: 100%; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}
.admin-form-field { display: flex; flex-direction: column; gap: 6px; }
.admin-form-field label { font-size: 13px; font-weight: 500; }
.admin-form-field.span-2 { grid-column: span 2; }

.admin-form-inline { display: inline-flex; align-items: center; gap: 6px; margin: 0; }
.admin-inline-input, .admin-inline-select {
  width: 96px;
  height: 30px;
  padding: 0 8px;
  font-size: 13px;
  border-radius: var(--radius-md);
}

/* ============================================================
   10. NOTICES & BANNERS
   ============================================================ */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  line-height: 1.5;
  margin-bottom: var(--space-4);
}
.notice span { min-width: 0; }
.notice-error, .notice.error {
  background: var(--danger-subtle);
  color: var(--danger-emphasis);
}
.notice-info { background: var(--info-subtle); color: var(--info-emphasis); }
.notice-success { background: var(--success-subtle); color: var(--success-emphasis); }

.jw-error-banner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--danger-subtle);
  color: var(--danger-emphasis);
  font-size: 13.5px;
  line-height: 1.5;
}
.jw-error-banner svg { flex-shrink: 0; margin-top: 2px; }

.warning-banner {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  background: var(--warning-subtle);
  color: var(--warning-emphasis);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: var(--space-4);
}

/* ============================================================
   11. CARDS & PANELS
   ============================================================ */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
}
.card + .card, .card + section.card { margin-top: var(--space-4); }
.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5) 0;
}
.card-title { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
.pct { font-size: 13px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }
.card-body { padding: var(--space-4) var(--space-5) var(--space-5); }

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
  overflow: hidden;
}
.panel-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.panel-sub { font-size: 13px; color: var(--muted-foreground); }
.panel-body { padding: var(--space-4) var(--space-5); }

/* ============================================================
   12. STATS — 数字卡 / 环形进度 / 线性进度（Appica 范式）
   ============================================================ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(190px, 100%), 1fr));
  gap: var(--space-3);
}
.stat-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: border-color var(--dur-fast) ease;
}
.stat-card:hover { border-color: var(--border-strong); }
.stat-label { font-size: 13px; font-weight: 500; color: var(--muted-foreground); }
.stat-value {
  font-size: 30px;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat-value .unit {
  margin-left: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted-foreground);
  letter-spacing: 0;
}
.stat-sub { font-size: 13px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }

/* 环形进度：SVG ring，值居中，标签在环下 */
.ring-chart {
  position: relative;
  width: 104px;
  height: 104px;
  margin: 0 auto;
}
.ring-chart svg { width: 104px; height: 104px; transform: rotate(-90deg); }
.ring-chart .track {
  fill: none;
  stroke: var(--secondary);
  stroke-width: 8;
}
.ring-chart .progress {
  fill: none;
  stroke: var(--foreground);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.9s var(--ease-out);
}
.ring-score {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.ring-score .num {
  font-size: 23px;
  font-weight: 650;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}
.ring-score .denom { font-size: 11px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }
.stat-ring { align-items: center; text-align: center; }
.stat-ring-label { font-size: 13px; font-weight: 500; color: var(--muted-foreground); margin-top: var(--space-2); }

/* 线性进度：标签左 · 数值右 · 细轨道在下 */
.pg { display: flex; flex-direction: column; gap: 7px; }
.pg-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: 13px;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
}
.pg-row .pg-label { color: inherit; }
.pg-row .pg-value { font-weight: 600; color: var(--foreground); }
.pg-track {
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  overflow: hidden;
}
.pg-fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: var(--foreground);
  transition: width 0.5s var(--ease-out);
}
.pg-fill.pg-success { background: var(--success-emphasis); }
.pg-fill.pg-warning { background: var(--warning-emphasis); }
.pg-fill.pg-danger { background: var(--danger-emphasis); }

/* 任务进度卡内的大号进度条 */
.progress-track {
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: var(--foreground);
  transition: width 0.45s var(--ease-out);
}

/* ============================================================
   13. STEPS
   ============================================================ */
.steps { display: flex; flex-direction: column; gap: var(--space-4); counter-reset: step; }
.step { display: flex; gap: var(--space-3); align-items: flex-start; }
.step-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  color: var(--foreground);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12.5px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.step-body { min-width: 0; padding-top: 2px; }
.step-title { font-size: 14px; font-weight: 600; line-height: 1.35; }
.step-desc { margin-top: 2px; font-size: 13px; color: var(--muted-foreground); line-height: 1.5; }

.intro-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted-foreground);
  line-height: 1.5;
}
.intro-note-icon { flex-shrink: 0; width: 15px; height: 15px; margin-top: 2px; }

/* ============================================================
   14. DATA LISTS — 成绩行 / 课程行 / 标签
   ============================================================ */
.data-list {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
  overflow: hidden;
}
.data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 13px 18px;
  border-top: 1px solid var(--border);
  transition: background var(--dur-fast) ease;
}
.data-row:first-child { border-top: 0; }
.data-row[data-index], .data-row[role="button"] { cursor: pointer; }
.data-row:hover { background: var(--secondary); }
label.data-row:hover { background: var(--secondary); }

.data-row-main { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.data-row-side { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }

.data-row-title {
  font-size: 14.5px;
  font-weight: 550;
  line-height: 1.35;
  overflow-wrap: anywhere;
}
.data-row-meta { margin-top: 2px; font-size: 12.5px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }

.score-chip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  background: var(--secondary);
  color: var(--foreground);
}
.score-chip.fail { background: var(--danger-subtle); color: var(--danger-emphasis); }

.row-chevron { width: 16px; height: 16px; color: var(--muted-foreground); flex-shrink: 0; }

.course-check {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--foreground);
  cursor: pointer;
  flex-shrink: 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  color: var(--muted-foreground);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.tag-success { background: var(--success-subtle); color: var(--success-emphasis); }
.tag-warning { background: var(--warning-subtle); color: var(--warning-emphasis); }
.tag-danger { background: var(--danger-subtle); color: var(--danger-emphasis); }
.tag-accent { background: var(--info-subtle); color: var(--info-emphasis); }

.select-actions, .result-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.result-actions { justify-content: flex-start; }

.failed-title { font-size: 13px; font-weight: 600; color: var(--danger-emphasis); margin-top: var(--space-4); }
.failed-list { margin-top: var(--space-2); display: flex; flex-direction: column; gap: 4px; }
.failed-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--danger-emphasis);
  font-variant-numeric: tabular-nums;
}
.failed-item svg { flex-shrink: 0; }

/* 结果统计 */
.stats-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); }
.stat-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
}
.stat-inner .num {
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-inner .num.ok { color: var(--success-emphasis); }
.stat-inner .num.fail { color: var(--danger-emphasis); }
.stat-inner .label { margin-top: 2px; font-size: 12.5px; color: var(--muted-foreground); }

/* ============================================================
   15. LOG BOX
   ============================================================ */
.log-box {
  margin-top: var(--space-4);
  max-height: 220px;
  overflow-y: auto;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--secondary);
  font-size: 12.5px;
  line-height: 1.6;
}
.log-entry { display: flex; gap: 10px; font-variant-numeric: tabular-nums; }
.log-time { flex-shrink: 0; color: var(--muted-foreground); }
.log-entry.success { color: var(--success-emphasis); }
.log-entry.error { color: var(--danger-emphasis); }
.log-entry.warning { color: var(--warning-emphasis); }

/* ============================================================
   16. SHEET (bottom drawer) & MODAL
   ============================================================ */
.sheet-overlay, .modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  background: var(--overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-med) ease, visibility 0s linear var(--dur-med);
}
.sheet-overlay { align-items: flex-end; }
.modal-overlay { align-items: center; padding: var(--space-4); }
.sheet-overlay.open, .modal-overlay.open {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--dur-med) ease;
}

.sheet {
  width: 100%;
  max-width: 520px;
  max-height: 82dvh;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  background: var(--card);
  box-shadow: var(--shadow-float);
  transform: translateY(24px);
  transition: transform var(--dur-med) var(--ease-out);
}
.sheet-overlay.open .sheet { transform: translateY(0); }
.sheet-grabber {
  flex-shrink: 0;
  width: 36px;
  height: 4px;
  margin: 10px auto 0;
  border-radius: var(--radius-full);
  background: var(--border-strong);
}
.sheet-head {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
}
.sheet-title { font-size: 15px; font-weight: 600; }
.sheet-close, .modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--muted-foreground);
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease;
}
.sheet-close:hover, .modal-close:hover { background: var(--secondary); color: var(--foreground); }
.sheet-body { overflow-y: auto; padding: 0 var(--space-3) var(--space-4); }

.sem-list { display: flex; flex-direction: column; gap: 2px; }
.sem-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: 11px 14px;
  border: 0;
  border-radius: var(--radius-lg);
  background: transparent;
  font-size: 14px;
  text-align: left;
  transition: background var(--dur-fast) ease;
}
.sem-option:hover { background: var(--secondary); }
.sem-option .check {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: var(--foreground);
  visibility: hidden;
}
.sem-option.active { font-weight: 600; }
.sem-option.active .check { visibility: visible; }
.sem-meta { margin-left: auto; font-size: 12.5px; color: var(--muted-foreground); }

.modal {
  width: 100%;
  max-width: 480px;
  max-height: 86dvh;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  background: var(--card);
  box-shadow: var(--shadow-float);
  transform: translateY(14px) scale(0.985);
  transition: transform var(--dur-med) var(--ease-out);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-header {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-5) 0;
}
.modal-title { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; line-height: 1.3; overflow-wrap: anywhere; }
.modal-sub { margin-top: 3px; font-size: 12.5px; color: var(--muted-foreground); font-variant-numeric: tabular-nums; }
.modal-body { overflow-y: auto; padding: var(--space-4) var(--space-5) var(--space-5); }

.modal-score-row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.modal-score { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; line-height: 1; }
.modal-score.pass { color: var(--foreground); }
.modal-score.fail { color: var(--danger-emphasis); }
.modal-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--secondary);
  color: var(--muted-foreground);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.modal-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--space-3); }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--border);
}
.detail-item { background: var(--card); padding: 10px 12px; }
.detail-item.full { grid-column: span 2; }
.detail-item .key { font-size: 12px; color: var(--muted-foreground); }
.detail-item .val { margin-top: 2px; font-size: 13.5px; font-weight: 500; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.detail-item .val.empty { color: var(--n-300); }
.dark .detail-item .val.empty { color: var(--n-700); }

/* ============================================================
   17. TABLES (admin)
   ============================================================ */
.admin-table-wrap {
  overflow-x: auto;
  scrollbar-width: thin;
}
.panel > .admin-table-wrap { border-top: 1px solid var(--border); }
.admin-table { min-width: 720px; font-size: 14px; }
.admin-table th {
  padding: 11px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted-foreground);
  background: var(--n-25);
  white-space: nowrap;
}
.dark .admin-table th { background: var(--secondary); }
.admin-table td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  vertical-align: middle;
}
.admin-table tbody tr:first-child td { border-top: 0; }
.admin-table tbody tr { transition: background var(--dur-fast) ease; }
.admin-table tbody tr:hover { background: color-mix(in srgb, var(--secondary) 55%, transparent); }
.admin-actions-cell { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.table-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
  overflow: hidden;
}
.table-card > .admin-table-wrap { border: 0; }

/* ============================================================
   18. TOAST
   ============================================================ */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 200;
  display: none;
  transform: translateX(-50%);
  max-width: min(92vw, 420px);
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--foreground);
  color: var(--background);
  font-size: 13.5px;
  font-weight: 500;
  text-align: center;
  box-shadow: var(--shadow-float);
  animation: toastIn 0.3s var(--ease-out) both;
}
.toast.error { background: var(--danger-emphasis); color: white; }
.toast.success { background: var(--foreground); color: var(--background); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ============================================================
   19. AUTH PAGES — login / bind / admin login
   ============================================================ */
.login-focus, .bind-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 140px);
  padding: var(--space-6) var(--space-4);
}
.login-announce { width: 100%; max-width: 396px; margin-bottom: var(--space-4); }

.auth-card {
  width: 100%;
  max-width: 396px;
  padding: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--card);
  animation: cardIn 0.5s var(--ease-out) both;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.login-logo, .auth-logo {
  width: 42px;
  height: 42px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--foreground);
  color: var(--background);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}
.login-focus-title, .auth-title {
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-align: center;
}
.login-focus-sub, .auth-sub {
  margin-top: 6px;
  margin-bottom: var(--space-5);
  font-size: 13.5px;
  color: var(--muted-foreground);
  text-align: center;
  line-height: 1.55;
}
.login-form .btn-lg { width: 100%; }

.login-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0;
  font-size: 12px;
  color: var(--muted-foreground);
}
.login-divider::before, .login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.btn-qq { width: 100%; }
.wechat-tip {
  display: none;
  margin-top: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  background: var(--warning-subtle);
  color: var(--warning-emphasis);
  font-size: 13px;
  line-height: 1.5;
}
.login-hint {
  margin-top: var(--space-5);
  font-size: 12.5px;
  color: var(--muted-foreground);
  text-align: center;
  line-height: 1.6;
}
.login-footer {
  padding: var(--space-5) 0 var(--space-6);
  text-align: center;
  font-size: 12.5px;
  color: var(--muted-foreground);
}

.bind-avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  object-fit: cover;
}
.bind-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-foreground);
  background: var(--secondary);
}
.bind-avatar-placeholder svg { width: 22px; height: 22px; }
.bind-desc {
  margin-top: 6px;
  margin-bottom: var(--space-5);
  font-size: 13.5px;
  color: var(--muted-foreground);
  text-align: center;
  line-height: 1.6;
}
.bind-card form .btn, .auth-card form .btn { width: 100%; }

/* admin login 复用 auth-card */
#admin-login-main {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) var(--space-4);
  background: var(--background);
}
.admin-login-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--secondary);
  color: var(--foreground);
  display: flex;
  align-items: center;
  justify-content: center;
}
.admin-login-icon svg { width: 20px; height: 20px; }
.admin-submit { width: 100%; }

/* ============================================================
   20. LOADING / EMPTY STATES
   ============================================================ */
.loading-state, .empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-4);
  text-align: center;
}
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--foreground);
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
}
.empty-state h4 { font-size: 14.5px; font-weight: 600; }
.empty-state p { font-size: 13px; color: var(--muted-foreground); line-height: 1.5; }
.empty-icon { width: 36px; height: 36px; color: var(--n-300); }
.dark .empty-icon { color: var(--n-700); }

/* ============================================================
   21. FOOTER
   ============================================================ */
.site-footer {
  padding: var(--space-8) 0 var(--space-6);
  text-align: center;
  font-size: 12.5px;
  color: var(--muted-foreground);
}

/* ============================================================
   22. RESPONSIVE — 1024 / 768 / 480 / 320
   ============================================================ */
@media (max-width: 1024px) {
  .container-wide { max-width: 100%; }
}

@media (max-width: 768px) {
  body { font-size: 14.5px; }
  .container-xl, .container-wide { padding: var(--space-5) var(--space-4) var(--space-8); }
  .nav-inner { padding: 0 var(--space-4); }
  .brand-tagline { display: none; }
  .page-header { align-items: stretch; flex-direction: column; }
  .page-header-actions { width: 100%; }
  .page-header-actions .sem-trigger { width: 100%; justify-content: space-between; }
  .switch-tab-item { padding: 6px 14px; }
  .stats-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stat-value { font-size: 26px; }
  .form-grid { grid-template-columns: 1fr; }
  .admin-form-field.span-2 { grid-column: span 1; }
  .modal-overlay { padding: var(--space-3); align-items: flex-end; }
  .modal { max-width: 100%; border-radius: var(--radius-xl) var(--radius-xl) 0 0; transform: translateY(24px); }
  .modal-overlay.open .modal { transform: translateY(0); }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-item.full { grid-column: span 1; }
  .result-actions, .select-actions { flex-wrap: wrap; }
  .result-actions .btn, .select-actions .btn { flex: 1 1 auto; }
}

@media (max-width: 480px) {
  .user-badge { max-width: 96px; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-card { padding: var(--space-4); }
  .card-head { padding: var(--space-4) var(--space-4) 0; }
  .card-body { padding: var(--space-4); }
  .panel-head { padding: var(--space-3) var(--space-4); }
  .panel-body { padding: var(--space-3) var(--space-4); }
  .data-row { padding: 12px 14px; }
  .auth-card { padding: var(--space-5) var(--space-4); }
  .toast { bottom: 18px; }
}

@media (min-width: 320px) and (max-width: 374px) {
  .switch-tab-item { padding: 6px 11px; font-size: 13px; }
  .brand-text { font-size: 14px; }
}

/* ============================================================
   23. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}