/* ============ 基础 ============ */
:root {
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-bg: #eef2ff;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --warning: #d97706;
  --text: #1e293b;
  --text-2: #64748b;
  --text-3: #94a3b8;
  --border: #e2e8f0;
  --bg: #f1f5f9;
  --card: #ffffff;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--primary); text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.hidden { display: none !important; }

/* ============ 顶部导航 ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { font-size: 26px; }
.brand-name { font-size: 19px; font-weight: 700; color: var(--text); }
.brand-sub {
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 600;
}

.main-nav { display: flex; gap: 4px; }

.nav-link {
  padding: 8px 14px;
  border-radius: 10px;
  color: var(--text-2);
  font-size: 14.5px;
  font-weight: 500;
  transition: all .18s;
}

.nav-link:hover { background: var(--primary-bg); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(79, 70, 229, .35); }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 20px;
  width: 40px;
  height: 40px;
}

/* ============ 布局 ============ */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 20px 60px;
  width: 100%;
  flex: 1;
}

.view { animation: fadeIn .25s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.page-head { margin-bottom: 24px; }
.page-head h1 { font-size: 28px; font-weight: 700; }
.page-head p { color: var(--text-2); margin-top: 6px; }

/* ============ 卡片 ============ */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.card-head h2 { font-size: 18px; font-weight: 600; }
.link { font-size: 13.5px; font-weight: 500; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.grid-2 > .card { padding: 26px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 14.5px;
  font-weight: 600;
  transition: all .18s;
}

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79, 70, 229, .3); }
.btn-primary:hover { background: #4338ca; transform: translateY(-1px); }

.btn-ghost { background: var(--primary-bg); color: var(--primary); }
.btn-ghost:hover { background: #e0e7ff; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-sm { padding: 7px 14px; font-size: 13px; }

/* ============ 仪表盘 Hero ============ */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 36px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  border: none;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
}

.hero-info { flex: 1; position: relative; z-index: 1; }
.hero-info h1 { font-size: 28px; font-weight: 700; margin-bottom: 10px; line-height: 1.35; }
.hero-info p { color: rgba(255, 255, 255, .85); max-width: 520px; line-height: 1.75; }

.hero-meta { display: flex; gap: 10px; margin: 20px 0 24px; }

.chip {
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .25);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .btn-primary { background: #fff; color: var(--primary); box-shadow: none; }
.hero .btn-primary:hover { background: #f3f4f6; }
.hero .btn-ghost { background: rgba(255, 255, 255, .14); color: #fff; }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, .24); }

/* 进度环 */
.hero-ring { position: relative; z-index: 1; flex-shrink: 0; }

.progress-ring { width: 140px; height: 140px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: rgba(255, 255, 255, .2); stroke-width: 10; }
.ring-fg {
  fill: none;
  stroke: #fff;
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset .6s ease;
}

.ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ring-text strong { font-size: 30px; line-height: 1.1; }
.ring-text span { font-size: 13px; color: rgba(255, 255, 255, .8); }

/* ============ 统计卡 ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.stat-card { display: flex; align-items: center; gap: 14px; padding: 20px 22px; }

.stat-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-body { display: flex; flex-direction: column; }
.stat-body strong { font-size: 20px; line-height: 1.35; }
.stat-body span { font-size: 13px; color: var(--text-3); margin-top: 3px; }

/* ============ 今日预览 / 里程碑 ============ */
.today-preview { }

.today-title { font-weight: 600; font-size: 15px; margin-bottom: 6px; }
.today-desc { color: var(--text-2); font-size: 13.5px; margin-bottom: 14px; line-height: 1.7; }

.task-mini { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }

.task-mini-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  background: var(--bg);
  border-radius: 10px;
  font-size: 13.5px;
  line-height: 1.5;
}

.task-mini-item.done { opacity: .75; }
.task-mini-item.done .mini-title { text-decoration: line-through; }

.mini-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
  flex-shrink: 0;
  background: transparent;
}

.task-mini-item.done .mini-check { background: var(--success); border-color: var(--success); }
.mini-title { flex: 1; }

.today-bar { margin-bottom: 8px; }
.today-count { font-size: 12.5px; color: var(--text-3); }

/* 进度条 */
.bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-light)); border-radius: 999px; transition: width .4s ease; }

/* 里程碑 */
.milestone-list { display: flex; flex-direction: column; gap: 12px; }

.milestone { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--bg); border-radius: 12px; }
.milestone.done { background: var(--success-bg); }

.ms-icon { font-size: 22px; flex-shrink: 0; }
.ms-body { flex: 1; display: flex; flex-direction: column; }
.ms-body strong { font-size: 14px; line-height: 1.4; }
.ms-body span { font-size: 12.5px; color: var(--text-2); margin-top: 3px; }

.ms-state { font-size: 12px; font-weight: 600; color: var(--warning); background: #fef3c7; padding: 3px 10px; border-radius: 999px; }
.milestone.done .ms-state { color: var(--success); background: #bbf7d0; }

/* ============ 培训计划 ============ */
.plan-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }

.plan-card { padding: 22px; display: flex; flex-direction: column; gap: 10px; cursor: pointer; transition: all .2s; border-top: 3px solid transparent; }
.plan-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(15, 23, 42, .12); }
.plan-card.today { border-top-color: var(--primary); background: linear-gradient(180deg, #f5f3ff 0%, #fff 55%); }
.plan-card.complete { border-top-color: var(--success); }
.plan-card.complete h3 { color: var(--text-2); }

.plan-day { font-size: 12px; font-weight: 700; letter-spacing: .12em; color: var(--primary); }
.plan-stage { font-size: 12px; color: var(--text-3); }
.plan-card h3 { font-size: 17px; }
.plan-desc { font-size: 13px; color: var(--text-2); flex: 1; }

.plan-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.plan-foot { margin-top: 4px; }
.plan-status { display: flex; justify-content: space-between; margin-top: 6px; font-size: 12.5px; color: var(--text-3); }
.ps-label { font-weight: 600; color: var(--text-2); }
.plan-card.complete .ps-label { color: var(--success); }

/* ============ 标签 ============ */
.tag { font-size: 11.5px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.tag-read { background: #e0f2fe; color: #0369a1; }
.tag-video { background: #fae8ff; color: #a21caf; }
.tag-practice { background: #ffedd5; color: #c2410c; }
.tag-quiz { background: #fef9c3; color: #a16207; }
.tag-submit { background: #dcfce7; color: #15803d; }

/* ============ 每日任务 ============ */
.task-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

.day-switch { display: flex; align-items: center; gap: 10px; }
.day-switch span { font-weight: 700; min-width: 56px; text-align: center; }

.task-day-card { padding: 26px; }

.task-day-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 20px; flex-wrap: wrap; }
.task-day-head h2 { font-size: 20px; margin-bottom: 4px; }
.task-day-head p { color: var(--text-2); font-size: 14px; }
.task-day-progress { min-width: 220px; }
.task-day-progress .bar { margin-bottom: 6px; }
.task-day-progress span { font-size: 12.5px; color: var(--text-3); }

.task-list { display: flex; flex-direction: column; gap: 12px; }

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg);
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all .2s;
}

.task-item:hover { border-color: var(--primary-light); }
.task-item.done { opacity: .75; }
.task-item.done .task-title { text-decoration: line-through; color: var(--text-3); }

.task-check {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--text-3);
  background: #fff;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  transition: all .18s;
}

.task-check:hover { border-color: var(--primary); }
.task-item.done .task-check { background: var(--success); border-color: var(--success); }

.task-body { flex: 1; }
.task-title-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.task-title { font-weight: 600; font-size: 15px; }
.task-desc { font-size: 13px; color: var(--text-2); margin: 3px 0; }
.task-meta { font-size: 12px; color: var(--text-3); }

.task-go-quiz { flex-shrink: 0; }

.task-summary { margin-top: 18px; padding: 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.task-summary h2 { font-size: 18px; margin-bottom: 4px; }
.task-summary p { color: var(--text-2); font-size: 14px; }

/* ============ 考核 ============ */
.quiz-list { display: flex; flex-direction: column; gap: 16px; }

.quiz-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px; flex-wrap: wrap; }
.quiz-info { flex: 1; min-width: 260px; }
.quiz-info h3 { font-size: 18px; margin-bottom: 6px; }
.quiz-info p { color: var(--text-2); font-size: 13.5px; }
.quiz-meta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; }
.quiz-meta span { font-size: 12.5px; color: var(--text-3); }

.quiz-side { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.quiz-score { text-align: center; padding: 10px 18px; border-radius: 12px; min-width: 140px; }
.quiz-score strong { font-size: 24px; display: block; }
.quiz-score span { font-size: 13px; }
.quiz-score small { font-size: 11px; color: var(--text-3); }
.quiz-score.pass { background: var(--success-bg); color: var(--success); }
.quiz-score.fail { background: var(--danger-bg); color: var(--danger); }
.quiz-score.none { background: var(--bg); color: var(--text-3); }

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .55);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: 20px;
  width: 100%;
  max-width: 680px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, .25);
  animation: popIn .22s ease;
}

.modal-sm { max-width: 420px; }
.modal-wide { max-width: 880px; }

/* ============ 管理员内容编辑器 ============ */
.page-head-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.page-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; padding-top: 4px; }

.admin-hint { font-size: 12.5px; color: var(--text-3); line-height: 1.7; }

.editor-toolbar { display: flex; align-items: flex-end; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.editor-toolbar .edit-field { flex: 1; min-width: 180px; }

.edit-item { border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 12px; background: var(--bg); }
.edit-item-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 10px; }
.edit-item-head strong { font-size: 13.5px; }

.edit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.edit-field { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; font-weight: 500; color: var(--text-2); }
.edit-field input,
.edit-field select,
.edit-field textarea {
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13.5px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color .15s;
  width: 100%;
}
.edit-field input:focus,
.edit-field select:focus,
.edit-field textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.edit-field textarea { resize: vertical; min-height: 40px; }

.edit-q-item .edit-field { margin-top: 8px; }
.edit-q-item .edit-field:first-child { margin-top: 0; }

#editModal .modal-body { padding-bottom: 28px; }
#editModal .modal-actions { position: sticky; bottom: 0; background: #fff; padding-top: 14px; border-top: 1px solid var(--border); margin-top: 8px; }

/* ============ 任务附件（学习材料） ============ */
.task-attachments { margin-top: 10px; border-top: 1px dashed var(--border); padding-top: 10px; }
.att-head { font-size: 12.5px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.att-list { display: flex; flex-direction: column; gap: 8px; }
.att-item { border: 1px solid var(--border); border-radius: 10px; padding: 8px; background: var(--bg); transition: border-color .2s, background .2s; }
.att-item.viewed { border-color: var(--success); background: var(--success-bg); }
.att-item video { width: 100%; max-height: 320px; border-radius: 8px; background: #000; display: block; }
.att-thumb { width: 100%; max-height: 240px; object-fit: cover; border-radius: 8px; cursor: zoom-in; display: block; }
.att-thumb:hover { opacity: .92; }
.att-status { font-size: 12px; color: var(--text-3); margin-top: 6px; }
.att-item.viewed .att-status { color: var(--success); font-weight: 600; }
.att-file-link { display: flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; color: var(--primary); text-decoration: none; word-break: break-all; }
.att-file-link:hover { text-decoration: underline; }

/* 自动完成型任务：勾选圈为只读状态 */
.task-check-auto { background: var(--bg); cursor: default; }
.task-check-auto:hover { transform: none; box-shadow: none; }

/* 管理员附件编辑器 */
.att-editor { margin-top: 12px; border-top: 1px dashed var(--border); padding-top: 10px; }
.att-editor-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 12.5px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.att-editor-list { display: flex; flex-wrap: wrap; gap: 8px; }
.att-chip { display: inline-flex; align-items: center; gap: 6px; background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; font-size: 12.5px; max-width: 260px; }
.att-chip-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.att-chip-del { border: none; background: none; color: var(--text-3); cursor: pointer; font-size: 15px; line-height: 1; padding: 0 2px; }
.att-chip-del:hover { color: var(--danger); }
.att-input { display: none; }

/* 图片大图预览 */
.img-modal { max-width: min(920px, 94vw); background: rgba(15, 23, 42, .92); border: none; box-shadow: none; padding: 12px; }
.img-modal img { width: 100%; max-height: 80vh; object-fit: contain; border-radius: 10px; display: block; }
.img-modal .modal-actions { justify-content: center; margin-top: 14px; }
.img-modal .btn-ghost { background: rgba(255, 255, 255, .12); color: #fff; }
.img-modal .btn-ghost:hover { background: rgba(255, 255, 255, .22); }

@media (max-width: 600px) {
  .edit-grid { grid-template-columns: 1fr; }
  .att-item video { max-height: 220px; }
}

@keyframes popIn {
  from { opacity: 0; transform: scale(.96); }
  to { opacity: 1; transform: none; }
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 1;
}

.modal-head h2 { font-size: 18px; }
.modal-close { background: none; border: none; font-size: 18px; color: var(--text-3); padding: 4px; border-radius: 8px; }
.modal-close:hover { background: var(--bg); color: var(--text); }

.modal-body { padding: 24px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* 考试界面 */
.quiz-progress { margin-bottom: 16px; }
.quiz-progress > span { font-size: 13px; color: var(--text-2); margin-bottom: 6px; display: block; }

.quiz-q { font-size: 17px; margin-bottom: 18px; }

.quiz-options { display: flex; flex-direction: column; gap: 10px; }

.quiz-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all .15s;
  font-size: 14.5px;
}

.quiz-option:hover { border-color: var(--primary-light); background: var(--primary-bg); }
.quiz-option.selected { border-color: var(--primary); background: var(--primary-bg); }

.opt-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-2);
  flex-shrink: 0;
}

.quiz-option.selected .opt-letter { background: var(--primary); color: #fff; }

.quiz-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 22px; }
.quiz-error { color: var(--danger); font-size: 13px; margin-top: 12px; }

/* 结果 */
.quiz-result { text-align: center; }
.result-icon { font-size: 52px; margin-bottom: 8px; }
.quiz-result h3 { font-size: 22px; margin-bottom: 6px; }
.result-score strong { font-size: 44px; color: var(--primary); }
.result-score span { font-size: 16px; color: var(--text-3); }
.quiz-result.fail .result-score strong { color: var(--warning); }
.quiz-result > p { color: var(--text-2); font-size: 14px; margin-top: 8px; }

.result-review {
  text-align: left;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 260px;
  overflow-y: auto;
}

.review-item { display: flex; gap: 10px; padding: 10px 12px; border-radius: 10px; background: var(--bg); }
.review-item.right { background: var(--success-bg); }
.review-item.wrong { background: var(--danger-bg); }

.review-icon { font-weight: 700; flex-shrink: 0; }
.review-item.right .review-icon { color: var(--success); }
.review-item.wrong .review-icon { color: var(--danger); }

.review-q { font-size: 13.5px; font-weight: 500; }
.review-a { font-size: 12.5px; color: var(--text-2); }

/* ============ 资源 ============ */
.resource-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }

.resource-card { display: flex; align-items: center; gap: 14px; padding: 18px; transition: all .2s; }
.resource-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(15, 23, 42, .12); }

.res-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.res-body { flex: 1; min-width: 0; }
.res-title-row { display: flex; align-items: center; gap: 8px; }
.res-title-row h3 { font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.res-body p { font-size: 13px; color: var(--text-2); margin: 3px 0; }
.res-type { font-size: 11.5px; color: var(--text-3); }

/* ============ 档案 ============ */
.form { display: flex; flex-direction: column; gap: 16px; margin-top: 20px; }
.form label { display: flex; flex-direction: column; gap: 7px; font-size: 13.5px; font-weight: 500; color: var(--text-2); }
.form input {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s;
  background: #fff;
}
.form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
.form .btn { margin-top: 8px; align-self: flex-start; }

.profile-stats { display: flex; flex-direction: column; gap: 16px; margin: 20px 0; }
.pstat { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.pstat span { font-size: 14px; color: var(--text-2); }
.pstat strong { font-size: 16px; }
.pstat .bar { flex-basis: 100%; margin-top: -4px; }

.profile-actions { margin-top: 16px; }
.hint { font-size: 12px; color: var(--text-3); margin-top: 10px; line-height: 1.7; }

/* ============ 页脚 / 提示 ============ */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text-3);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1e293b;
  color: #fff;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: all .3s ease;
  box-shadow: 0 12px 32px rgba(0, 0, 0, .25);
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ 空状态 ============ */
.empty { color: var(--text-3); font-size: 14px; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .hero { flex-direction: column; text-align: center; padding: 28px 20px; }
  .hero-info p { margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .hero-meta { justify-content: center; }
}

@media (max-width: 720px) {
  .menu-toggle { display: block; }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(15, 23, 42, .08);
  }

  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 14px; }

  .plan-grid, .resource-grid { grid-template-columns: 1fr; }
  .task-head { flex-direction: column; align-items: flex-start; }
}

/* ============ 登录 / 注册 ============ */
.login-mask {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #a855f7 100%);
}

.login-mask::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, .14) 0, transparent 42%),
    radial-gradient(circle at 85% 80%, rgba(255, 255, 255, .12) 0, transparent 46%);
}

.login-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 22px;
  box-shadow: 0 32px 80px rgba(15, 23, 42, .3);
  padding: 36px 36px 30px;
  animation: popIn .3s ease;
}

.login-brand { text-align: center; margin-bottom: 24px; }
.login-logo { font-size: 44px; line-height: 1; }
.login-brand h1 { font-size: 24px; margin-top: 10px; }
.login-brand p { color: var(--text-3); font-size: 13.5px; margin-top: 4px; }

.login-tabs {
  display: flex;
  background: var(--bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 20px;
}

.login-tab {
  flex: 1;
  padding: 9px 0;
  border: none;
  background: transparent;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  transition: all .18s;
}

.login-tab.active { background: #fff; color: var(--primary); box-shadow: 0 2px 8px rgba(15, 23, 42, .08); }

.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--text-2); }
.login-form input {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  transition: border-color .15s;
}
.login-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

.login-error { font-size: 12.5px; color: var(--danger); text-align: center; min-height: 16px; }
.login-btn { width: 100%; padding: 12px; font-size: 15px; }
.login-foot { text-align: center; font-size: 12.5px; color: var(--text-3); margin-top: 16px; }

.nav-user { display: flex; align-items: center; gap: 8px; }
.nav-username { font-size: 13.5px; font-weight: 600; color: var(--text); max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 480px) {
  .login-card { padding: 28px 22px 24px; }
  .login-logo { font-size: 38px; }
  .nav-username { display: none; }
}