* { box-sizing: border-box; }
body { margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif; background:#f5f7fa; color:#1f2937; }
a { color:#2563eb; text-decoration:none; }
button, .btn { cursor:pointer; }
.btn { display:inline-block; background:#2563eb; color:#fff; border:0; padding:8px 16px; border-radius:8px; font-size:14px; transition:.15s; box-shadow:0 1px 2px rgba(37,99,235,.22); }
.btn:hover { background:#1d4ed8; transform:translateY(-1px); box-shadow:0 4px 12px rgba(37,99,235,.26); }
.btn:active { transform:translateY(0); }
.btn-sm { padding:5px 10px; font-size:13px; }
.btn-ghost { background:#e5e7eb; color:#374151; box-shadow:none; }
.btn-ghost:hover { background:#d1d5db; transform:translateY(-1px); }
.btn-danger { background:#dc2626; box-shadow:0 1px 2px rgba(220,38,38,.22); }
.btn-danger:hover { background:#b91c1c; box-shadow:0 4px 12px rgba(220,38,38,.26); }
.btn-green { background:#16a34a; box-shadow:0 1px 2px rgba(22,163,74,.22); }
.btn-green:hover { background:#15803d; box-shadow:0 4px 12px rgba(22,163,74,.26); }
input[type=text], input[type=password], input[type=number], select, textarea {
  width:100%; padding:8px 10px; border:1px solid #d1d5db; border-radius:6px; font-size:14px; margin:4px 0;
}
label { font-size:13px; color:#4b5563; display:block; margin-top:8px; }
.card { background:#fff; border-radius:12px; padding:20px; box-shadow:0 1px 3px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.04); }
.grid { display:grid; gap:14px; }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.grid-4 { grid-template-columns:repeat(4,1fr); }
@media(max-width:800px){ .layout{ grid-template-columns:1fr; } }

/* 登录 */
.login-wrap { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,#2563eb,#1e40af); }
.login-box { width:360px; background:#fff; border-radius:12px; padding:30px; box-shadow:0 10px 30px rgba(0,0,0,.2); }
.login-box h1 { font-size:22px; margin:0 0 6px; }
.login-box .sub { color:#6b7280; font-size:13px; margin-bottom:18px; }

/* 工作台登录页（清新浅色，与首页风格统一） */
.login-fresh { background:linear-gradient(165deg,#f4f8fe 0%,#e9f0fa 100%); }
.login-fresh .login-box { width:380px; border:1px solid #e6ecf7; box-shadow:0 14px 40px rgba(15,23,42,.10); }
.login-fresh .btn-block { width:100%; padding:12px; font-size:15px; text-align:center; }
.login-brand { display:flex; align-items:center; gap:14px; margin-bottom:22px; }
.login-logo { width:52px; height:52px; border-radius:14px; background:#2563eb; display:flex; align-items:center; justify-content:center; flex:0 0 auto; box-shadow:0 8px 20px rgba(37,99,235,.25); }
.login-logo svg { width:28px; height:28px; fill:#fff; }
.login-brand h1 { font-size:20px; margin:0 0 4px; letter-spacing:2px; color:#0f172a; }
.login-brand .sub { color:#64748b; font-size:12.5px; margin:0; }
.login-fresh label { margin-top:14px; color:#475569; }
.login-fresh input { width:100%; box-sizing:border-box; margin-top:6px; padding:12px 14px; font-size:15px; border:1px solid #d8e0ee; border-radius:10px; background:#fbfdff; }
.login-fresh input:focus { outline:none; border-color:#2563eb; box-shadow:0 0 0 3px rgba(37,99,235,.12); }
.login-err { color:#dc2626; font-size:13px; margin-top:12px; }
.login-back { display:inline-block; margin-top:18px; color:#2563eb; font-size:13px; text-decoration:none; }
.login-back:hover { text-decoration:underline; }

/* 首页门户（未登录导航卡片，由超管后台「首页卡片」配置驱动）—— 清新浅色卡片导航 */
.portal { min-height:100vh; min-height:100dvh; display:flex; flex-direction:column;
  background:linear-gradient(165deg,#f4f8fe 0%,#e9f0fa 100%); }
/* 顶栏：左导航 / 中 logo+站名 / 右搜索 */
.portal-top { display:flex; align-items:center; gap:14px; padding:14px 22px; background:rgba(255,255,255,.72); backdrop-filter:blur(8px); border-bottom:1px solid #e6ecf7; position:sticky; top:0; z-index:20; }
.pt-left { display:flex; gap:6px; flex:1 1 0; min-width:0; overflow-x:auto; }
.pn-item { padding:8px 12px; border-radius:10px; color:#475569; font-size:14.5px; white-space:nowrap; text-decoration:none; }
.pn-item:hover { background:#eef4ff; color:#2563eb; }
.pt-center { display:flex; align-items:center; gap:12px; flex:0 0 auto; text-decoration:none; color:inherit; }
.pt-logo-box { width:46px; height:46px; border-radius:13px; background:#2563eb; display:flex; align-items:center; justify-content:center; box-shadow:0 8px 20px rgba(37,99,235,.28); flex:0 0 auto; }
.pt-logo-box svg { width:26px; height:26px; fill:#fff; }
.pt-logo-img { width:46px; height:46px; object-fit:contain; border-radius:13px; background:#fff; }
.pt-name { font-size:22px; font-weight:800; letter-spacing:3px; color:#0f172a; }
.pt-sub { font-size:12.5px; color:#64748b; letter-spacing:.5px; }
.pt-right { display:flex; gap:8px; flex:1 1 0; justify-content:flex-end; min-width:0; }
.pt-search { width:100%; max-width:220px; padding:8px 12px; border:1px solid #d8e0ee; border-radius:10px; font-size:14px; background:#fff; }
.pt-search:focus { outline:none; border-color:#2563eb; box-shadow:0 0 0 3px rgba(37,99,235,.12); }
/* 主体 + 分类区块（分类名称在上、卡片在下） */
.portal-main { flex:1; width:100%; max-width:980px; margin:0 auto; padding:28px 18px 40px; }
.pc-sec { margin-bottom:30px; }
.pc-sec-title { color:#334155; font-size:15px; font-weight:700; letter-spacing:2px; margin:0 0 14px; }
.pc-sec-grid { display:grid; gap:20px; grid-template-columns:repeat(auto-fit,minmax(220px,260px)); justify-content:start; }
.portal-loading { color:#94a3b8; text-align:center; padding:24px; }
.portal-card { background:#fff; border:1px solid #e6ecf7; border-radius:18px; padding:26px 24px;
  box-shadow:0 8px 24px rgba(15,23,42,.06); color:#1f2937; text-decoration:none; display:flex; flex-direction:column; position:relative; transition:.18s; }
.portal-card:hover { transform:translateY(-4px); box-shadow:0 16px 36px rgba(37,99,235,.16); border-color:#cfddf7; }
.pc-icon { width:50px; height:50px; border-radius:14px; background:#eef4ff; color:#2563eb; display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.pc-icon svg { width:26px; height:26px; fill:#2563eb; }
.pc-title { font-size:19px; font-weight:700; color:#0f172a; }
.pc-desc { font-size:13.5px; color:#6b7280; margin-top:8px; line-height:1.7; flex:1; }
.pc-go { margin-top:18px; color:#2563eb; font-weight:600; font-size:15px; }
.pc-label { position:absolute; top:14px; right:14px; background:#f59e0b; color:#fff; font-size:11px; font-weight:600; padding:3px 10px; border-radius:999px; }
/* 底栏：友情链接 / 版权 / 备案 */
.portal-bot { background:#fff; border-top:1px solid #e6ecf7; padding:20px 22px; text-align:center; color:#64748b; }
.pb-links { display:flex; justify-content:center; gap:16px; flex-wrap:wrap; margin-bottom:8px; }
.pb-links a { color:#2563eb; font-size:13.5px; }
.pb-cp { font-size:13px; }
.pb-record { display:flex; justify-content:center; gap:14px; flex-wrap:wrap; margin-top:6px; font-size:12.5px; }
.pb-record a { color:#94a3b8; }
/* 后台仪表盘统计 / 快捷入口 */
.dash-stats { display:grid; gap:14px; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); }
.dash-stat { text-align:center; cursor:pointer; transition:.15s; }
.dash-stat:hover { transform:translateY(-2px); box-shadow:0 10px 26px rgba(37,99,235,.14); }
.dash-num { font-size:30px; font-weight:800; color:#2563eb; }
.dash-lab { font-size:13.5px; color:#6b7280; margin-top:4px; }
.dash-quick { display:grid; gap:12px; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); }
.dash-tile { text-align:center; padding:18px 10px; cursor:pointer; font-weight:600; color:#0f172a; transition:.15s; }
.dash-tile:hover { transform:translateY(-2px); box-shadow:0 10px 26px rgba(37,99,235,.14); }
.sys-row .btn { flex:0 0 auto; }
@media (max-width:640px) {
  .portal-top { flex-wrap:wrap; justify-content:center; gap:10px; padding:12px 14px; }
  .pt-left, .pt-right { flex:1 1 100%; justify-content:center; }
  .pt-search { max-width:none; }
  .pc-sec-grid { grid-template-columns:1fr; }
  .portal-main { padding:20px 14px 30px; }
}

/* 布局 */
.layout { display:grid; grid-template-columns:210px 1fr; min-height:100vh; }
.sidebar { background:#1f2937; color:#cbd5e1; padding:16px 10px; }
.sidebar .brand { color:#fff; font-weight:700; font-size:17px; padding:10px 12px 16px; }
.sidebar .nav-item { padding:10px 12px; border-radius:6px; margin:3px 0; cursor:pointer; font-size:14px; }
.sidebar .nav-item:hover, .sidebar .nav-item.active { background:#374151; color:#fff; }
.main { padding:18px 22px; }
.topbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; }
.topbar .who { font-size:14px; color:#4b5563; }
.main h3 { font-size:17px; font-weight:600; color:#0f172a; margin:0 0 14px; padding-left:11px; border-left:3px solid #2563eb; line-height:1.3; }
.main h4 { font-size:15px; font-weight:600; color:#1e293b; margin:0 0 10px; }
.card-tile { background:#fff; border-radius:10px; padding:16px; box-shadow:0 1px 3px rgba(0,0,0,.08); cursor:pointer; transition:.15s; }
.card-tile:hover { transform:translateY(-2px); box-shadow:0 4px 12px rgba(0,0,0,.12); }
.card-tile .t { font-size:15px; font-weight:600; }
.card-tile .d { font-size:12px; color:#6b7280; margin-top:4px; }

table { width:100%; border-collapse:collapse; background:#fff; border-radius:8px; overflow:hidden; }
th,td { text-align:left; padding:9px 12px; border-bottom:1px solid #f1f5f9; font-size:14px; }
th { background:#f8fafc; color:#475569; }
tr:hover td { background:#f9fafb; }

.tag { display:inline-block; padding:2px 8px; border-radius:999px; font-size:12px; }
.tag-green { background:#dcfce7; color:#166534; }
.tag-gray { background:#e5e7eb; color:#374151; }
.tag-blue { background:#dbeafe; color:#1e40af; }

.modal-bg { position:fixed; inset:0; background:rgba(0,0,0,.4); display:flex; align-items:center; justify-content:center; z-index:50; }
.modal { background:#fff; border-radius:10px; padding:24px; width:420px; max-width:92vw; }
.modal h3 { margin:0 0 14px; }

.stat { font-size:26px; font-weight:700; color:#2563eb; }
.muted { color:#6b7280; font-size:13px; }
.row { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.spacer { flex:1; }
.toast { position:fixed; bottom:24px; left:50%; transform:translateX(-50%); background:#111827; color:#fff; padding:10px 18px; border-radius:8px; z-index:99; font-size:14px; }
.hidden { display:none; }

/* 非阻塞的「建议修改密码」提示条 */
.pw-suggest { background:#fffbeb; border:1px solid #fde68a; border-radius:10px; padding:14px 16px; margin-bottom:14px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; }
.pw-suggest-txt { color:#92400e; font-size:14px; flex:1; min-width:220px; }

/* 仪表盘统计卡 */
.stat-card { text-align:center; padding:16px; }
.stat-card .stat { font-size:28px; font-weight:700; color:#2563eb; line-height:1.2; }

/* 点名签到网格 */
.roll-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(112px,1fr)); gap:10px; margin-top:10px; }
.student-tile { background:#fff; border:1px solid #e5e7eb; border-radius:8px; padding:12px 8px; text-align:center; cursor:pointer; transition:.12s; font-size:14px; user-select:none; }
.student-tile:hover { border-color:#2563eb; box-shadow:0 2px 6px rgba(37,99,235,.18); }
.student-tile .st-label { font-size:12px; margin-top:6px; color:#6b7280; }
.student-tile.st-none { background:#f9fafb; }
.student-tile.st-default { background:#dcfce7; border-color:#16a34a; }
.student-tile.st-default .st-label { color:#166534; }
.student-tile.st-other { background:#dbeafe; border-color:#2563eb; }
.student-tile.st-other .st-label { color:#1e40af; }
.status-bar { margin-top:14px; display:flex; gap:8px; flex-wrap:wrap; align-items:center; }

/* 小标签 chip（名单条目 / 状态统计 / 抽题选项） */
.chip { display:inline-block; background:#eef2ff; color:#3730a3; border:1px solid #c7d2fe; border-radius:999px; padding:3px 11px; font-size:13px; margin:2px; }

/* 任务 / 题库 分类与子任务 */
.cat-node { border:1px solid #eef2f7; border-radius:8px; padding:10px 12px; margin-bottom:10px; background:#fbfdff; }
.cat-head { display:flex; align-items:center; gap:6px; flex-wrap:wrap; margin-bottom:8px; }
.subtasks { display:flex; flex-wrap:wrap; gap:8px; }
.subtask { background:#fff; border:1px solid #e5e7eb; border-radius:8px; padding:10px; min-width:160px; }

/* 配额进度条 */
.bar { height:8px; background:#e5e7eb; border-radius:999px; margin-top:10px; overflow:hidden; }
.bar-in { height:100%; background:#2563eb; border-radius:999px; transition:width .3s; }

/* 团队内联链接 */
.lk { color:#2563eb; font-size:12px; margin-left:4px; cursor:pointer; }
.lk-name { font-weight:600; }

/* 超管后台 - 首页卡片管理 */
.hc-row { border:1px solid #eef2f7; border-radius:10px; padding:12px 14px; margin-bottom:10px; background:#fbfdff; }
.hc-head { display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-bottom:10px; }
.hc-idx { width:22px; height:22px; line-height:22px; text-align:center; background:#2563eb; color:#fff; border-radius:50%; font-size:12px; flex:0 0 auto; }
.hc-type { max-width:150px; }
.hc-en { display:inline-flex; align-items:center; gap:4px; font-size:13px; color:#374151; margin:0; }
.hc-ops { margin-left:auto; display:flex; gap:6px; flex-wrap:wrap; }
.hc-cats { background:#f8fafc; border:1px solid #eef2f7; border-radius:10px; padding:14px; margin-top:6px; }
.hc-sub { font-size:14px; font-weight:700; color:#1f2937; margin-bottom:8px; }
.chips { display:flex; flex-wrap:wrap; gap:6px; align-items:center; }
.chip-x { border:0; background:transparent; color:#6b7280; cursor:pointer; font-size:14px; line-height:1; padding:0 2px; margin-left:2px; }
.chip-x:hover { color:#dc2626; }
.hc-sec { border:1px dashed #dfe4ea; border-radius:10px; padding:12px; margin-top:10px; background:#fff; }
.hc-sec-t { font-size:13px; font-weight:600; color:#2563eb; margin-bottom:8px; }

/* ===================== 多端自适应 ===================== */
/* 移动端视口高度（避免手机地址栏遮挡） */
.login-wrap, .portal { min-height:100vh; min-height:100dvh; }

/* 平板（≤800px）：网格降为 2 列，侧边栏转为顶部横向滑动导航 */
@media (max-width:800px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns:repeat(2,1fr); }
  .layout { grid-template-columns:1fr; }
  /* 侧边栏 → 顶部吸顶横滑标签栏 */
  .sidebar {
    position:sticky; top:0; z-index:30;
    display:flex; align-items:center; gap:4px;
    flex-wrap:nowrap; overflow-x:auto; overflow-y:hidden;
    padding:8px 10px; white-space:nowrap;
    -webkit-overflow-scrolling:touch;
  }
  .sidebar .brand { font-size:15px; padding:6px 12px 6px 2px; flex:0 0 auto; }
  .sidebar .nav-item { margin:0 2px; flex:0 0 auto; padding:8px 12px; }
  .main { padding:12px; }
  .topbar { flex-wrap:wrap; gap:8px; }
  /* 表格在窄屏可横向滚动，避免列被压扁 */
  table { display:block; width:100%; overflow-x:auto; -webkit-overflow-scrolling:touch; }
}

/* 手机（≤480px）：全部单列，放大点按目标，登录框自适应宽度 */
@media (max-width:480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns:1fr; }
  body { font-size:15px; }
  .main { padding:10px; }
  .card { padding:14px; }
  .topbar { margin-bottom:12px; }
  .roll-grid { grid-template-columns:repeat(auto-fill,minmax(84px,1fr)); gap:8px; }
  .student-tile { padding:10px 6px; font-size:13px; }
  .btn { padding:10px 16px; }
  .btn-sm { padding:8px 12px; }
  .login-box, .portal .login-box { width:100%; max-width:360px; padding:22px; }
  th, td { padding:7px 9px; font-size:13px; }
  .stat-card .stat { font-size:24px; }
  .modal { padding:18px; }
  /* 分类树缩进在窄屏适当减小，避免内容被挤出 */
  .cat-node[style*="margin-left"] { margin-left:8px !important; }
}