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

:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #ea580c;
  --danger: #dc2626;
  --purple: #9333ea;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --text-muted: #475569;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; max-width: 100%; }
html, body {
  margin: 0; padding: 0;
  width: 100%; max-width: 100%;
  height: 100%;
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-overflow-scrolling: touch;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  position: relative;
  -webkit-text-size-adjust: 100%;
}
img, table, canvas, video { max-width: 100%; }
table { table-layout: auto; }

::placeholder { color: #94a3b8; opacity: 1; }
::-webkit-input-placeholder { color: #94a3b8; }
::-moz-placeholder { color: #94a3b8; opacity: 1; }

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

/* 侧边栏 */
.sidebar {
  width: 220px;
  background: linear-gradient(180deg, #1e3a5f 0%, #162942 100%);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}
.logo { padding: 20px 16px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.logo-icon { font-size: 28px; }
.logo-title { color: #fff; font-weight: 700; font-size: 13px; white-space: nowrap; }
.logo-sub { font-size: 11px; color: #94a3b8; }
.nav { flex: 1; padding: 12px 8px; overflow-y: auto; min-height: 0; -webkit-overflow-scrolling: touch; }
.nav-item {
  display: block; padding: 10px 14px; border-radius: 8px;
  color: #cbd5e1; text-decoration: none; cursor: pointer;
  margin-bottom: 2px; font-size: 13.5px; transition: all 0.15s;
}
.nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.sidebar-footer { padding: 16px; border-top: 1px solid rgba(255,255,255,0.08); }
.countdown-mini { text-align: center; font-size: 12px; color: #94a3b8; }
.countdown-mini strong { color: #fbbf24; font-size: 18px; display: block; }

/* 主内容 */
.main { flex: 1; margin-left: 220px; padding: 24px 28px; max-width: 100%; }
.view { display: none; }
.view.active { display: block; animation: fadeIn 0.2s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 10px; }
.page-header h1 { font-size: 22px; font-weight: 700; }
.page-count-badge {
  display: inline-block; background: #eff6ff; color: #2563eb;
  font-size: 13px; font-weight: 600; padding: 4px 12px; border-radius: 20px;
  margin-left: 12px; vertical-align: middle;
}
.today-label { color: var(--text-muted); font-size: 13px; }

.card { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; overflow: hidden; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.card-header h3 { font-size: 15px; font-weight: 600; }
.card h3 { font-size: 15px; font-weight: 600; margin-bottom: 14px; }
.section-title { font-size: 15px; font-weight: 600; margin: 24px 0 12px; color: var(--text); }

/* 英雄卡片 */
.hero-card {
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  border-radius: var(--radius); padding: 28px 32px; color: #fff;
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px; box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}
.hero-label { font-size: 14px; opacity: 0.85; }
.hero-days { font-size: 56px; font-weight: 800; line-height: 1.1; margin: 4px 0; }
.hero-date { font-size: 13px; opacity: 0.75; }
.hero-right { display: flex; gap: 32px; }
.hero-stat { text-align: center; }
.hero-num { font-size: 28px; font-weight: 700; display: block; }
.hero-unit { font-size: 12px; opacity: 0.8; }

.badge { background: var(--primary-light); color: var(--primary-dark); padding: 2px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }

.btn {
  padding: 8px 16px; border-radius: 8px; border: none; cursor: pointer;
  font-size: 13px; font-weight: 500; transition: all 0.15s;
  display: inline-flex; align-items: center; gap: 4px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-danger { background: var(--danger); color: #fff; }

.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.input {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 13px; outline: none; background: #fff; transition: border-color 0.15s;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.input-sm { padding: 4px 8px; width: 90px; }

/* 任务列表 */
.task-list { display: flex; flex-direction: column; gap: 8px; }
.task-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: #f8fafc; border-radius: 8px; border: 1px solid var(--border); }
.task-item.done .task-text { text-decoration: line-through; color: var(--text-muted); }
.task-check {
  width: 20px; height: 20px; border: 2px solid var(--border); border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.15s;
}
.task-check.checked { background: var(--success); border-color: var(--success); color: #fff; font-size: 12px; }
.task-text { flex: 1; }
.task-subject { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: var(--primary-light); color: var(--primary-dark); flex-shrink: 0; }
.task-actions { display: flex; gap: 4px; }
.task-actions button { background: none; border: none; cursor: pointer; font-size: 13px; padding: 2px 6px; border-radius: 4px; color: var(--text-muted); }
.task-actions button:hover { background: #e2e8f0; color: var(--danger); }
.task-drag-handle { cursor: grab; color: #94a3b8; font-size: 16px; padding: 0 4px; user-select: none; flex-shrink: 0; }
.task-drag-handle:active { cursor: grabbing; }
.task-item[draggable="true"] { cursor: default; }
.empty-state { text-align: center; padding: 32px; color: var(--text-muted); font-size: 13px; }

/* 记录列表 */
.record-list { display: flex; flex-direction: column; gap: 10px; }
.record-item { padding: 12px 14px; background: #f8fafc; border-radius: 8px; border-left: 3px solid var(--primary); }
.record-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.record-subject { font-weight: 600; font-size: 13px; }
.record-duration { font-size: 12px; color: var(--primary); font-weight: 600; }
.record-content { font-size: 13px; color: var(--text); }
.record-notes { font-size: 12px; color: var(--text-muted); margin-top: 4px; font-style: italic; }
.record-date { font-size: 11px; color: var(--text-muted); }

/* 打印样式：浅色网页风格，目标学校圆环显示 */
@media print {
  @page { size: A4 landscape; margin: 5mm; }
  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }
  html, body { height: auto !important; overflow: visible !important; }
  body { background: #fff !important; color: #1e293b; font-family: "Microsoft YaHei", sans-serif; margin: 0; padding: 0; text-align: center !important; }
  .sidebar, .topbar, .hamburger, .mobile-header, .mobile-title, .sidebar-overlay,
  .page-header button, .score-list, #scoreList,
  .view:not(#view-scores), .toast, .modal-overlay,
  .score-card-drag, .score-card-actions, .goal-actions,
  .school-card-drag, .school-card-actions, .school-card-total, .school-card-note {
    display: none !important; visibility: hidden !important; opacity: 0 !important;
    width: 0 !important; height: 0 !important; padding: 0 !important; margin: 0 !important;
    position: static !important; }
  #view-scores { display: block !important; page-break-after: auto !important; page-break-inside: auto !important; background: #fff !important; width: 100% !important; margin: 0 auto !important; text-align: left !important; }
  #view-scores .card:nth-of-type(2) { height: auto !important; max-height: none !important; overflow: visible !important; }
  #view-scores .card:nth-of-type(3) { height: auto !important; max-height: none !important; overflow: visible !important; }
  #view-scores .card { page-break-inside: avoid !important; break-inside: avoid !important; }
  #view-scores .card:nth-of-type(4) { height: auto !important; max-height: none !important; overflow: visible !important; width: 100% !important; box-sizing: border-box !important; margin-top: 8px !important; text-align: center !important; page-break-inside: avoid !important; }
  #view-scores #chartScoreTrend { height: 160px !important; max-height: 160px !important; min-height: 160px !important; width: 90% !important; margin: 0 auto !important; display: block !important; }
  #view-scores #chartScoreTrendImg { width: 90% !important; max-height: 160px !important; height: auto !important; margin: 0 auto !important; display: block !important; object-fit: contain !important; }
  .main { margin-left: 0 !important; padding: 0 !important; background: #fff; height: auto !important; flex: none !important; display: block !important; }
  .app { display: block !important; height: auto !important; min-height: auto !important; }
  .page-header { text-align: center; margin-bottom: 4px; padding: 2px 0; background: transparent !important; border-bottom: 1px solid #e2e8f0 !important; display: block !important; visibility: visible !important; opacity: 1 !important; width: auto !important; height: auto !important; position: static !important; }
  .page-header h1 { font-size: 14px; color: #1e40af; margin: 0; text-align: center; font-weight: 700; }
  .page-header h1 { font-size: 16px; color: #1e40af; margin: 0; }
  .card { background: #fff; border: none; box-shadow: none;
    margin: 0 0 3px 0; padding: 4px 8px; break-inside: auto; border-radius: 0;
    height: auto !important; max-height: none !important; min-height: 0 !important; overflow: visible !important; }
  #view-scores .weak-subjects, #view-scores .school-grid { height: auto !important; max-height: none !important; overflow: visible !important; }
  .card h3 { font-size: 12px; color: #1e40af; margin: 0 0 4px 0; text-align: left !important; border-left: none; }
  .card-header-row { justify-content: flex-start !important; }
  .card-header-row h3 { text-align: left !important; }
  .trend-subject-filter { display: none !important; }
  /* 目标学校：flex强制一行，用高优先级选择器覆盖普通样式 */
  #view-scores .school-grid { display: flex !important; flex-wrap: nowrap !important; gap: 4px !important; }
  #view-scores .school-card, #view-scores .school-card.above, #view-scores .school-card.below {
    position: relative; background: transparent !important; border: none !important; border-left: none !important;
    padding: 4px 2px !important; font-size: 10px !important; color: #1e293b; border-radius: 0;
    display: flex; flex-direction: column; align-items: center; text-align: center; min-height: 100px;
    flex: 1 1 0 !important; max-width: none !important; min-width: 0 !important; box-shadow: none !important; gap: 2px !important; min-height: 60px !important; }
  #view-scores .school-card::before, #view-scores .school-card::after { display: none !important; }
  #view-scores .school-ring { display: block; margin: 0 auto 2px auto; flex-shrink: 0; }
  #view-scores .school-card-name { font-size: 10px !important; font-weight: 700 !important; color: #1e293b; order: 2; margin-top: 1px; line-height: 1.2; }
  #view-scores .school-card-diff { font-size: 9px !important; padding: 1px 6px !important; border-radius: 8px; order: 3; margin-top: 1px; font-weight: 600; }
  #view-scores .school-card.above .school-card-diff { background: #dcfce7; color: #059669; }
  #view-scores .school-card.below .school-card-diff { background: #fef3c7; color: #d97706; }
  /* 薄弱科目：恢复长条列表样式，缩小尺寸，铺满全宽 */
  #view-scores .weak-subjects { display: flex !important; flex-direction: column !important; gap: 3px !important; width: 100% !important; }
  #view-scores .weak-item { display: flex !important; flex-direction: row !important; align-items: center !important; gap: 8px !important; padding: 2px 12px !important; background: #f8fafc !important; border: 1px solid #e2e8f0 !important; border-radius: 6px !important; width: 100% !important; box-sizing: border-box !important; min-height: 15px !important; }
  #view-scores .weak-rank { width: 18px !important; height: 18px !important; font-size: 10px !important; flex-shrink: 0 !important; }
  #view-scores .weak-name { font-size: 11px !important; min-width: 55px !important; font-weight: 700 !important; flex-shrink: 0 !important; }
  #view-scores .weak-score { font-size: 10px !important; min-width: 48px !important; flex-shrink: 0 !important; }
  #view-scores .weak-bar-wrap { flex: 1 !important; height: 7px !important; min-width: 60px !important; }
  #view-scores .weak-rate { font-size: 10px !important; min-width: 38px !important; text-align: right !important; font-weight: 700 !important; flex-shrink: 0 !important; }
  #view-scores .weak-tag { font-size: 9px !important; padding: 2px 6px !important; flex-shrink: 0 !important; white-space: nowrap !important; }
  #view-scores > div:nth-child(5) { display: none !important; }
  
  /* 手机端打印：缩小尺寸确保一页 */
  @media (max-width: 900px) {
    #view-scores #chartScoreTrend { height: 120px !important; max-height: 120px !important; min-height: 120px !important; }
    #view-scores .school-ring { width: 44px !important; height: 44px !important; }
  }
}

/* 节点提醒 */
.milestone-alerts { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.alert-item {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px;
  border-radius: var(--radius); background: #fff; box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
}
.alert-item.urgent { border-left-color: var(--danger); background: #fef2f2; }
.alert-item.soon { border-left-color: var(--warning); background: #fff7ed; }
.alert-days { text-align: center; min-width: 60px; }
.alert-days strong { font-size: 24px; font-weight: 700; display: block; color: var(--primary); }
.alert-item.urgent .alert-days strong { color: var(--danger); }
.alert-item.soon .alert-days strong { color: var(--warning); }
.alert-days span { font-size: 11px; color: var(--text-muted); }
.alert-info { flex: 1; }
.alert-name { font-weight: 600; font-size: 14px; }
.alert-desc { font-size: 12px; color: var(--text-muted); }
.alert-date { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

/* 测试提醒 */
.test-alert {
  display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.test-card {
  flex: 1; min-width: 240px; padding: 16px 20px; border-radius: var(--radius);
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
}
.test-card.error { background: linear-gradient(135deg, #fdf4ff 0%, #fae8ff 100%); border-color: #e9d5ff; }
.test-card.done { background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%); border-color: #bbf7d0; }
.test-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.test-subjects { font-size: 18px; font-weight: 700; color: var(--primary); }
.test-card.error .test-subjects { color: var(--purple); }
.test-card.done .test-subjects { color: var(--success); }
.test-date { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 仪表盘网格 */
.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.overview-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.overview-card {
  background: var(--card); border-radius: var(--radius); padding: 16px;
  box-shadow: var(--shadow); cursor: pointer; transition: transform 0.15s;
  text-align: center;
}
.overview-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.ov-icon { font-size: 24px; margin-bottom: 4px; }
.ov-label { font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.ov-value { font-size: 18px; font-weight: 700; }
.ov-value small { font-size: 11px; color: var(--text-muted); font-weight: 400; }
.ov-progress { height: 5px; background: var(--border); border-radius: 3px; margin-top: 6px; overflow: hidden; }
.ov-progress-bar { height: 100%; background: var(--success); border-radius: 3px; transition: width 0.3s; }

/* 知识积累 */
.knowledge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.counter-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.counter-row label { font-size: 13px; color: var(--text-muted); }
.counter-hint { font-size: 12px; color: var(--text-muted); margin: 8px 0; }
.counter-progress { display: flex; align-items: center; gap: 10px; margin: 12px 0; }
.cp-bar { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.cp-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--success)); border-radius: 4px; transition: width 0.3s; }
.counter-progress span { font-weight: 700; font-size: 13px; min-width: 40px; text-align: right; }

/* 成绩分析 */
.school-compare { display: flex; flex-direction: column; gap: 12px; }
.school-item {
  padding: 14px 16px; background: #f8fafc; border-radius: 8px;
  border: 1px solid var(--border);
}
.school-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.school-name { font-weight: 700; font-size: 15px; }
.school-diff { font-weight: 700; font-size: 16px; padding: 2px 10px; border-radius: 10px; }
.school-diff.above { color: var(--success); background: #dcfce7; }
.school-diff.below { color: var(--danger); background: #fee2e2; }
.school-detail { font-size: 13px; color: var(--text-muted); }
.school-actions { display: flex; gap: 6px; margin-top: 8px; }
.school-actions button { font-size: 12px; padding: 3px 8px; border-radius: 5px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.school-actions button:hover { border-color: var(--danger); color: var(--danger); }

.weak-subjects { display: flex; flex-direction: column; gap: 8px; }
.weak-item {
  display: flex; align-items: center; gap: 12px; padding: 10px 14px;
  background: #f8fafc; border-radius: 8px; border: 1px solid var(--border);
}
.weak-rank { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 12px; color: #fff; flex-shrink: 0; }
.weak-rank.r1 { background: var(--danger); }
.weak-rank.r2 { background: var(--warning); }
.weak-rank.r3 { background: #ca8a04; }
.weak-rank.rn { background: var(--text-muted); }
.weak-name { font-weight: 600; min-width: 80px; }
.weak-score { font-size: 13px; color: var(--text-muted); }
.weak-bar-wrap { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.weak-bar { height: 100%; border-radius: 4px; transition: width 0.3s; }
.weak-rate { font-size: 13px; font-weight: 600; min-width: 50px; text-align: right; }
.weak-tag { font-size: 11px; padding: 2px 8px; border-radius: 10px; font-weight: 600; }
.weak-tag.danger { background: #fee2e2; color: var(--danger); }
.weak-tag.warn { background: #fff7ed; color: var(--warning); }
.weak-tag.ok { background: #dcfce7; color: var(--success); }

.score-list { display: flex; flex-direction: column; gap: 10px; }
.score-item { padding: 12px 16px; background: #f8fafc; border-radius: 8px; border: 1px solid var(--border); }
.score-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.score-exam { font-weight: 600; }
.score-total { font-weight: 700; color: var(--primary); font-size: 16px; }
.score-subjects { font-size: 12px; color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 8px; }
.score-actions { display: flex; gap: 6px; margin-top: 8px; }
.score-actions button { font-size: 12px; padding: 3px 8px; border-radius: 5px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.score-actions button:hover { border-color: var(--primary); color: var(--primary); }
.score-actions .del:hover { border-color: var(--danger); color: var(--danger); }

/* 目标拆解 */
.goal-calc { max-width: 500px; }
.calc-result {
  margin-top: 16px; padding: 16px; background: var(--primary-light);
  border-radius: 8px; font-size: 14px; line-height: 1.8;
}
.calc-result .big { font-size: 24px; font-weight: 800; color: var(--primary); }
.goal-list { display: flex; flex-direction: column; gap: 10px; }
.goal-item {
  padding: 14px 16px; background: #f8fafc; border-radius: 8px;
  border: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center;
}
.goal-info { flex: 1; }
.goal-name { font-weight: 600; font-size: 14px; }
.goal-detail { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.goal-days { font-size: 20px; font-weight: 800; color: var(--primary); text-align: center; min-width: 80px; }
.goal-days small { display: block; font-size: 11px; font-weight: 400; color: var(--text-muted); }
.goal-actions { display: flex; gap: 6px; margin-left: 12px; }
.goal-actions button { font-size: 12px; padding: 3px 8px; border-radius: 5px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.goal-actions button:hover { border-color: var(--danger); color: var(--danger); }

/* 时间线 */
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.tl-item { position: relative; padding: 16px 20px; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 14px; }
.tl-item::before {
  content: ''; position: absolute; left: -24px; top: 22px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--primary); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--primary);
}
.tl-item.past::before { background: var(--text-muted); box-shadow: 0 0 0 2px var(--text-muted); }
.tl-item.urgent::before { background: var(--danger); box-shadow: 0 0 0 2px var(--danger); }
.tl-head { display: flex; justify-content: space-between; align-items: center; }
.tl-name { font-weight: 700; font-size: 15px; }
.tl-countdown { font-size: 13px; font-weight: 600; color: var(--primary); }
.tl-item.urgent .tl-countdown { color: var(--danger); }
.tl-item.past .tl-countdown { color: var(--text-muted); }
.tl-date { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.tl-desc { font-size: 13px; color: var(--text); margin-top: 6px; }
.tl-actions { display: flex; gap: 6px; margin-top: 10px; }
.tl-actions button { font-size: 12px; padding: 4px 10px; border-radius: 6px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.tl-actions button:hover { border-color: var(--primary); color: var(--primary); }
.tl-actions .del:hover { border-color: var(--danger); color: var(--danger); }

/* 统计 */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.stats-grid .card canvas { max-height: 280px; }
.stat-summary { display: flex; flex-direction: column; gap: 12px; padding: 10px 0; }
.stat-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.stat-row:last-child { border-bottom: none; }
.stat-row .label { color: var(--text-muted); font-size: 13px; }
.stat-row .value { font-weight: 700; font-size: 16px; }

/* 数据管理 */
.data-actions { display: flex; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.muted { color: var(--text-muted); font-size: 13px; margin-bottom: 8px; }
.form-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.form-row label { min-width: 100px; font-size: 13px; color: var(--text-muted); }
.score-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.score-table th, .score-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
.score-table th { background: #f8fafc; font-weight: 600; }
.score-table .total-row { font-weight: 700; background: var(--primary-light); }
.score-table .total-row td { border-bottom: none; }

/* 模态框 */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 1000; justify-content: center; align-items: center; }
.modal-overlay.show { display: flex; }
.modal { background: #fff; border-radius: var(--radius); width: 90%; max-width: 520px; max-height: 85vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.2); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 16px; }
.modal-close { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--text-muted); }
.modal-body { padding: 20px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 4px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 13px; outline: none; font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-group textarea { resize: vertical; min-height: 60px; }
.modal-footer { padding: 0 20px 20px; display: flex; gap: 10px; justify-content: flex-end; }
.score-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* Toast */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: #1e293b; color: #fff; padding: 10px 20px; border-radius: 8px; font-size: 13px; opacity: 0; transition: all 0.25s; z-index: 2000; pointer-events: none; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 响应式 */
@media (max-width: 900px) {
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .logo-title, .logo-sub, .sidebar-footer { display: none; }
  .nav-item { text-align: center; padding: 12px 0; font-size: 20px; }
  .main { margin-left: 60px; padding: 16px; }
  .hero-card { flex-direction: column; text-align: center; gap: 16px; }
  .hero-right { gap: 20px; }
  .dash-grid, .stats-grid { grid-template-columns: 1fr; }
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 登录注册层 */
.auth-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
  display: flex; align-items: center; justify-content: center;
  z-index: 3000;
}
.auth-overlay.hidden { display: none; }
.auth-box {
  background: #fff; border-radius: 16px; padding: 36px 32px;
  width: 360px; max-width: 90vw; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  text-align: center;
}
.auth-logo { font-size: 48px; margin-bottom: 8px; }
.auth-title { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 20px; }
.auth-tabs { display: flex; gap: 0; margin-bottom: 20px; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
.auth-tab {
  flex: 1; padding: 10px; border: none; background: #f8fafc;
  cursor: pointer; font-size: 14px; color: var(--text-muted); font-weight: 500;
}
.auth-tab.active { background: var(--primary); color: #fff; }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-input {
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; transition: border-color 0.15s;
}
.auth-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.pwd-wrap { position: relative; }
.pwd-wrap .auth-input, .pwd-wrap .input { width: 100%; padding-right: 40px; }
.pwd-toggle { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); cursor: pointer; font-size: 16px; user-select: none; z-index: 2; }
/* 隐藏浏览器自带的密码显示按钮 */
input::-ms-reveal, input::-ms-clear { display: none; }
input::-webkit-credentials-auto-fill-button { display: none; }
.auth-btn {
  padding: 12px; border: none; border-radius: 8px; background: var(--primary);
  color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background 0.15s; margin-top: 4px;
}
.auth-btn:hover { background: var(--primary-dark); }
.auth-btn-guest { background: #64748b; font-size: 13px; padding: 9px; margin-top: 8px; }
.auth-btn-guest:hover { background: #475569; }
.readonly-badge {
  display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 4px;
  background: #dc2626; color: #fff; font-weight: 700; margin-left: 6px;
  letter-spacing: 1px;
}

/* 公告滚动栏 */
.announcement-bar {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border: 1px solid #f59e0b; border-radius: 10px;
  padding: 10px 16px; margin-bottom: 20px;
  position: relative;
}
.announcement-icon { font-size: 18px; flex-shrink: 0; }
.announcement-scroll {
  flex: 1; min-width: 0; overflow: hidden; white-space: nowrap;
  font-size: 14px; color: #92400e; font-weight: 500;
}
.announcement-scroll .ann-item { display: inline-block; padding-right: 60px; }
.announcement-scroll .ann-title { font-weight: 700; margin-right: 8px; }
.announcement-close {
  background: rgba(146,64,14,0.1); border: none; color: #92400e;
  padding: 4px 10px; border-radius: 6px; font-size: 12px; cursor: pointer;
  flex-shrink: 0; white-space: nowrap;
}
.announcement-close:hover { background: rgba(146,64,14,0.2); }

/* 侧边栏公告红点 */
.nav-ann-badge {
  display: inline-block; background: #dc2626; color: #fff;
  font-size: 10px; font-weight: 700; padding: 1px 6px;
  border-radius: 10px; margin-left: 6px; vertical-align: middle;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

/* 公告管理列表 */
.announcement-manage-list { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.announcement-manage-item {
  padding: 14px 18px; background: #f8fafc; border-radius: 8px;
  border: 1px solid var(--border); border-left: 4px solid var(--primary);
}
.announcement-manage-item.important { border-left-color: #dc2626; }
.announcement-manage-title { font-weight: 700; font-size: 15px; margin-bottom: 4px; }
.announcement-manage-content { color: var(--text-muted); font-size: 13px; margin-bottom: 8px; }
.announcement-manage-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-muted); }
.announcement-manage-actions { display: flex; gap: 8px; }
.announcement-manage-actions button {
  background: none; border: 1px solid var(--border); padding: 4px 10px;
  border-radius: 6px; font-size: 12px; cursor: pointer; color: var(--text-muted);
  white-space: nowrap; flex-shrink: 0;
}
.announcement-manage-actions button:hover { border-color: var(--danger); color: var(--danger); }

/* 用户管理 */
.user-list { display: flex; flex-direction: column; gap: 10px; }
.user-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: #f8fafc; border-radius: 8px;
  border: 1px solid var(--border);
}
.user-item.banned { opacity: 0.6; background: #fef2f2; }
.user-name { font-weight: 700; font-size: 15px; min-width: 100px; }
.user-tags { display: flex; gap: 6px; flex: 1; }
.user-tag {
  font-size: 11px; padding: 2px 8px; border-radius: 10px; font-weight: 600;
}
.user-tag.admin { background: #dbeafe; color: #1d4ed8; }
.user-tag.readonly { background: #fef3c7; color: #92400e; }
.user-tag.banned { background: #fee2e2; color: #dc2626; }
.user-tag.normal { background: #dcfce7; color: #16a34a; }
.user-meta { font-size: 12px; color: var(--text-muted); }
.user-actions { display: flex; gap: 8px; }
.user-actions button {
  padding: 5px 12px; border-radius: 6px; font-size: 12px; cursor: pointer;
  border: 1px solid var(--border); background: #fff; color: var(--text);
}
.user-actions button.ban-btn:hover { border-color: var(--danger); color: var(--danger); }
.user-actions button.unban-btn:hover { border-color: var(--success); color: var(--success); }

/* 磁盘空间 */
.storage-info { display: flex; flex-direction: column; gap: 8px; }
.storage-bar-wrap { background: #e2e8f0; border-radius: 6px; height: 24px; overflow: hidden; position: relative; }
.storage-bar { height: 100%; background: linear-gradient(90deg, #2563eb, #60a5fa); transition: width 0.3s; }
.storage-bar.warn { background: linear-gradient(90deg, #ea580c, #fb923c); }
.storage-bar.danger { background: linear-gradient(90deg, #dc2626, #f87171); }
.storage-bar-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 12px; font-weight: 600; color: #1e293b; }
.storage-detail { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); }

/* 反馈列表 */
.feedback-list { display: flex; flex-direction: column; gap: 12px; }
.feedback-item {
  padding: 14px 18px; background: #fff; border-radius: 10px;
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.feedback-item.unread { border-left: 4px solid var(--primary); }
.feedback-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.feedback-user { font-weight: 700; font-size: 14px; }
.feedback-type { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: #f1f5f9; color: var(--text-muted); margin-left: 8px; }
.feedback-date { font-size: 12px; color: var(--text-muted); }
.feedback-content { font-size: 14px; line-height: 1.6; color: var(--text); margin-bottom: 10px; }
.feedback-actions { display: flex; gap: 8px; }
.feedback-actions button {
  padding: 4px 10px; border-radius: 6px; font-size: 12px; cursor: pointer;
  border: 1px solid var(--border); background: #fff; color: var(--text-muted);
}
.feedback-actions button:hover { border-color: var(--primary); color: var(--primary); }
.feedback-actions button.del:hover { border-color: var(--danger); color: var(--danger); }
.auth-error { color: var(--danger); font-size: 13px; margin-bottom: 12px; min-height: 18px; text-align: left; }
.auth-hint { font-size: 12px; color: var(--text-muted); margin-top: 16px; }

/* 用户信息 */
.user-info {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 12px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px; color: #94a3b8;
}
.user-info span { color: #e2e8f0; font-weight: 500; }
.logout-btn {
  background: rgba(255,255,255,0.1); border: none; color: #cbd5e1;
  padding: 4px 10px; border-radius: 6px; font-size: 11px; cursor: pointer;
}
.logout-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }
.pwd-btn {
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
  color: #fff; padding: 3px 8px; border-radius: 4px; font-size: 11px;
  cursor: pointer; margin-left: 6px;
}
.pwd-btn:hover { background: rgba(255,255,255,0.2); }

/* 邀请码列表 */
.invite-list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.invite-item {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 18px; background: #f8fafc; border-radius: 8px;
  border: 1px solid var(--border);
}
.invite-code {
  font-size: 22px; font-weight: 800; letter-spacing: 4px;
  color: var(--primary); font-family: monospace;
  min-width: 140px;
}
.invite-item.used .invite-code { color: var(--text-muted); text-decoration: line-through; }
.invite-info { flex: 1; font-size: 12px; color: var(--text-muted); }
.invite-status {
  font-size: 12px; padding: 3px 10px; border-radius: 10px; font-weight: 600;
}
.invite-status.unused { background: #dcfce7; color: var(--success); }
.invite-status.used { background: #f1f5f9; color: var(--text-muted); }
.invite-copy {
  background: var(--primary); color: #fff; border: none; padding: 5px 12px;
  border-radius: 6px; font-size: 12px; cursor: pointer;
}
.invite-copy:hover { background: var(--primary-dark); }
.invite-del {
  background: none; border: 1px solid var(--border); padding: 5px 10px;
  border-radius: 6px; font-size: 12px; cursor: pointer; color: var(--text-muted);
}
.invite-del:hover { border-color: var(--danger); color: var(--danger); }

/* 已使用邀请码折叠区域 */
.invite-used-section { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 12px; }
.invite-used-toggle {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px; background: #f8fafc; border-radius: 8px;
  cursor: pointer; font-size: 13px; color: var(--text-muted); font-weight: 600;
  transition: background 0.15s;
}
.invite-used-toggle:hover { background: #f1f5f9; }
.invite-toggle-arrow { font-size: 10px; }
.invite-used-list { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.invite-item-compact { padding: 8px 14px; }
.invite-item-compact .invite-code { font-size: 16px; letter-spacing: 2px; }

/* ========== 移动端适配 ========== */
.mobile-header {
  display: none;
  position: fixed; top: 0; left: 0; right: 0;
  height: 52px; background: linear-gradient(135deg, #1e3a5f, #162942);
  color: #fff; align-items: center; padding: 0 16px;
  z-index: 99; box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.hamburger {
  background: none; border: none; color: #fff; font-size: 22px;
  cursor: pointer; padding: 6px 10px; margin-right: 12px;
}
.mobile-title { font-size: 16px; font-weight: 600; }
.sidebar-overlay {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5); z-index: 98;
}

@media (max-width: 768px) {
  .mobile-header { display: flex; }
  .sidebar-overlay.active { display: block; }

  .sidebar {
    transform: translateX(-100%); transition: transform 0.25s ease;
    width: 260px;
    padding-top: 0;
    display: block !important;
    overflow-y: auto !important;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }
  .sidebar.open { transform: translateX(0); }

  /* 侧边栏内部紧凑 */
  .sidebar .logo { padding: 60px 14px 12px; display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; width: 100%; box-sizing: border-box; }
  .sidebar .logo > div { width: 100%; text-align: center; }
  .sidebar .logo-icon { font-size: 28px; }
  .sidebar .logo-title { font-size: 11px; white-space: normal; line-height: 1.3; word-break: break-all; width: 100%; display: block !important; visibility: visible !important; opacity: 1 !important; color: #fff !important; }
  .sidebar .logo-sub { font-size: 10px; display: block !important; color: #94a3b8 !important; }
  .sidebar .nav { padding: 8px 6px; display: block; overflow: visible; flex: none; }
  .sidebar .nav-item { padding: 8px 12px; font-size: 12.5px; margin-bottom: 1px; }
  .sidebar .sidebar-footer { padding: 10px 12px 30px; display: block; }
  .sidebar .countdown-mini { font-size: 11px; }
  .sidebar .countdown-mini strong { font-size: 15px; }
  .sidebar .user-info { font-size: 11px; flex-wrap: wrap; gap: 4px; display: flex; }

  .main {
    margin-left: 0; padding: 68px 14px 20px;
  }

  .page-header h1 { font-size: 18px; }
  .card { padding: 14px; }
  .hero-card { padding: 18px 16px; flex-direction: column; gap: 14px; align-items: flex-start; }
  .hero-days { font-size: 40px; }
  .hero-right { gap: 20px; width: 100%; justify-content: space-around; }
}

/* ========== 成绩分析 - 网格卡片 ========== */
.school-grid {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 14px !important;
}
.school-card {
  flex: 1 1 220px !important;
  max-width: 280px !important;
  min-width: 200px !important;
  border-radius: 12px !important;
  padding: 18px !important;
  border: 1px solid #e5e7eb !important;
  background: #fff !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 10px !important;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08) !important;
  transition: transform 0.15s, box-shadow 0.15s !important;
}
.school-card:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12) !important;
}
.school-card.above { border-left: 4px solid #10b981 !important; background: linear-gradient(135deg, #f0fdf4 0%, #fff 100%) !important; }
.school-card.below { border-left: 4px solid #f59e0b !important; background: linear-gradient(135deg, #fffbeb 0%, #fff 100%) !important; }
.school-card-name { font-weight: 600; font-size: 15px; color: #1f2937; line-height: 1.4; }
.school-card-note { font-size: 12px; color: #6b7280; background: #f3f4f6; padding: 3px 8px; border-radius: 4px; display: inline-block; width: fit-content; }
.school-card-total { font-size: 26px; font-weight: 700; color: #111827; }
.school-card-total small { font-size: 13px; font-weight: 400; color: #6b7280; }
.school-card-diff { font-size: 14px; font-weight: 600; padding: 4px 10px; border-radius: 6px; display: inline-block; width: fit-content; }
.school-card.above .school-card-diff { color: #059669; background: #d1fae5; }
.school-card.below .school-card-diff { color: #b45309; background: #fef3c7; }
.school-card-actions { display: flex; gap: 8px; margin-top: auto; }
.school-card-actions button {
  flex: 1; padding: 6px 10px; font-size: 12px; border: 1px solid #d1d5db;
  background: #fff; border-radius: 6px; cursor: pointer; color: #374151;
}
.school-card-actions button:hover { background: #f3f4f6; }
.school-card-actions .del { color: #dc2626; border-color: #fca5a5; }

.school-card-drag {
  font-size: 11px; color: #9ca3af; text-align: center; cursor: grab;
  padding: 2px 0; user-select: none; letter-spacing: 2px;
}
.school-card-drag:active { cursor: grabbing; }
.school-card.drag-over {
  border: 2px dashed #2563eb !important;
  transform: scale(1.02);
}

.score-filter {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
  padding: 10px 14px; background: #f9fafb; border-radius: 8px;
}
.score-filter label { font-size: 13px; color: #6b7280; }
.score-filter select {
  padding: 5px 10px; border: 1px solid #d1d5db; border-radius: 6px;
  font-size: 13px; background: #fff;
}
.score-count { font-size: 12px; color: #9ca3af; margin-left: auto; }

.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.score-card {
  border-radius: 10px;
  padding: 16px;
  border: 1px solid #e5e7eb;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.score-card-head {
  display: flex; justify-content: space-between; align-items: center;
}
.score-card-exam { font-weight: 600; font-size: 14px; color: #1f2937; }
.score-card-date { font-size: 12px; color: #9ca3af; }
.score-card-total { font-size: 32px; font-weight: 700; color: #2563eb; }
.score-card-total small { font-size: 14px; font-weight: 400; color: #6b7280; }
.score-card-subs {
  display: flex; flex-wrap: wrap; gap: 5px;
}
.score-sub-tag {
  font-size: 11px; padding: 2px 7px; background: #f3f4f6;
  border-radius: 4px; color: #4b5563;
}
.score-sub-tag.highlight {
  background: #dbeafe; color: #1d4ed8; font-weight: 600;
}
.score-card-actions { display: flex; gap: 8px; margin-top: auto; }
.score-card-actions button {
  flex: 1; padding: 6px 10px; font-size: 12px; border: 1px solid #d1d5db;
  background: #fff; border-radius: 6px; cursor: pointer; color: #374151;
}
.score-card-actions button:hover { background: #f3f4f6; }
.score-card-actions .del { color: #dc2626; border-color: #fca5a5; }

.score-card-drag, .school-card-drag {
  font-size: 11px; color: #9ca3af; text-align: center; cursor: grab;
  padding: 2px 0; user-select: none; letter-spacing: 2px;
  display: flex; justify-content: center; align-items: center; gap: 8px;
}
.move-btn {
  display: inline-block; cursor: pointer; padding: 0 6px;
  font-size: 14px; font-weight: bold; color: #2563eb;
  border-radius: 3px; user-select: none;
}
.move-btn:hover { background: #eff6ff; color: #1d4ed8; }
.score-card-drag:active { cursor: grabbing; }
.score-card, .school-card {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
}
.score-card.drag-over {
  border: 2px dashed #2563eb !important;
  transform: scale(1.02);
}

.card-header-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.card-header-row h3 { margin: 0; }
.card-header-left {
  display: flex; align-items: center; gap: 12px; flex-shrink: 0;
}
.card-header-left h3 { white-space: nowrap; }
.card-header-left .btn { white-space: nowrap; flex-shrink: 0; }
.score-filter-inline {
  display: flex; align-items: center; gap: 8px;
}
.score-filter-inline select {
  padding: 5px 10px; border: 1px solid #d1d5db; border-radius: 6px;
  font-size: 13px; background: #fff;
}
.score-filter-inline .score-count {
  font-size: 12px; color: #9ca3af;
}

.trend-checkboxes {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end;
}
.trend-checkbox {
  display: flex; align-items: center; gap: 4px;
  font-size: 12px; color: #4b5563; cursor: pointer;
  padding: 3px 8px; background: #f3f4f6; border-radius: 4px;
}
.trend-checkbox input { cursor: pointer; }
.trend-checkbox:hover { background: #e5e7eb; }

@media (max-width: 480px) {
  .school-card { flex: 1 1 45% !important; min-width: 45% !important; max-width: 48% !important; }
  .score-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-num { font-size: 22px; }

  .btn { padding: 7px 12px; font-size: 12px; }
  .input { padding: 7px 10px; font-size: 13px; }
  .toolbar { gap: 6px; }

  /* 表格横向滚动 */
  .table-wrap, .card > table, .card > .table-wrap {
    display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
  }
  table { width: 100%; font-size: 12px; }
  th, td { padding: 8px 6px; white-space: nowrap; }

  /* 统计卡片网格 */
  .stats-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 10px; }
  .stat-card { padding: 12px; }
  .stat-num { font-size: 20px; }

  /* 表单 */
  .form-row { flex-direction: column; gap: 8px; }
  .form-group { margin-bottom: 10px; }
  .form-group label { font-size: 13px; }

  /* 登录页 */
  .auth-box { width: 90%; max-width: 360px; padding: 28px 20px; }
  .auth-title { font-size: 20px; }

  /* 弹窗 */
  .modal-content { width: 92%; max-width: 400px; max-height: 85vh; overflow-y: auto; }

  /* 公告栏 */
  .announcement-bar { font-size: 12px; padding: 6px 10px; }

  /* 用户信息区 */
  .user-info { font-size: 12px; }
  .pwd-btn, .logout-btn { padding: 3px 6px; font-size: 10px; }

  /* 知识积累卡片 */
  .counter-grid { grid-template-columns: repeat(2, 1fr) !important; }

  /* 里程碑时间线 */
  .milestone-list { padding-left: 20px; }

  /* 目标拆解 */
  .goal-item { flex-direction: column; gap: 8px; align-items: flex-start; }
  .goal-progress { width: 100%; }

  /* 成绩记录复选框 - 手机端4列整齐布局 */
  .trend-checkboxes { display: grid !important; grid-template-columns: repeat(4, 1fr) !important; gap: 6px !important; justify-content: flex-start !important; }
  .trend-checkbox { font-size: 11px !important; padding: 3px 6px !important; justify-content: center !important; }
  .score-count { grid-column: 1 / -1 !important; text-align: right !important; font-size: 11px !important; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr !important; }
  .counter-grid { grid-template-columns: 1fr !important; }
  .hero-right { flex-direction: column; gap: 10px; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar .btn, .toolbar .input { width: 100%; }
}