:root {
  --primary: #2f6fed;
  --primary-dark: #2559c9;
  --primary-light: #eef3ff;
  --success: #22a06b;
  --success-light: #e9f8f0;
  --danger: #e5484d;
  --danger-light: #fdecec;
  --warn: #e8a33d;
  --bg: #f4f6fa;
  --card: #ffffff;
  --border: #e6eaf2;
  --text: #1f2937;
  --muted: #6b7280;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(20, 40, 80, .06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.clearfix::after { content: ""; display: block; clear: both; }

/* 按钮 */
.btn { display: inline-block; padding: 8px 18px; border: 1px solid var(--primary); background: var(--primary); color: #fff; border-radius: 8px; cursor: pointer; font-size: 14px; transition: .15s; }
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn.gray { background: #fff; color: var(--muted); border-color: var(--border); }
.btn.gray:hover { background: #f3f5f9; color: var(--text); }
.btn.danger { background: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: #cf3a3f; }
.btn-danger-confirm, .btn.btn-danger-confirm { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger-confirm:hover, .btn.btn-danger-confirm:hover { background: #cf3a3f; border-color: #cf3a3f; color: #fff; }
.btn.sm { padding: 4px 12px; font-size: 13px; border-radius: 6px; }
.btn.lg { padding: 11px 30px; font-size: 15px; }
.btn.block { display: block; width: 100%; text-align: center; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* 顶部导航 */
.topbar { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.topbar .inner { display: flex; align-items: center; height: 60px; gap: 18px; }
.logo { font-size: 18px; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.logo span { display: inline-block; width: 28px; height: 28px; border-radius: 8px; background: var(--primary); color: #fff; text-align: center; line-height: 28px; font-size: 15px; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { padding: 7px 14px; border-radius: 8px; color: var(--text); font-size: 14px; }
.nav a:hover { background: var(--primary-light); color: var(--primary); }
.nav a.on { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.top-user { display: flex; align-items: center; gap: 10px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 600; overflow: hidden; }

/* 页脚 */
.footer { margin-top: 40px; padding: 26px 0; background: #fff; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; text-align: center; }
.footer p { margin: 3px 0; }
.footer-copy { padding-top: 4px; }

/* 页脚友情链接 */
.footer-links { padding: 2px 0 18px; margin-bottom: 16px; border-bottom: 1px dashed var(--border); }
.fl-title {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  font-size: 13px; font-weight: 600; color: var(--text); letter-spacing: 2px; margin-bottom: 14px;
}
.fl-title::before, .fl-title::after {
  content: ""; width: 34px; height: 1px;
}
.fl-title::before { background: linear-gradient(90deg, transparent, var(--border)); }
.fl-title::after { background: linear-gradient(90deg, var(--border), transparent); }
.fl-list { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.fl-list a {
  display: inline-block; padding: 6px 15px; border-radius: 20px;
  background: #fff; border: 1px solid var(--border);
  color: var(--muted); font-size: 13px; text-decoration: none;
  transition: color .18s, border-color .18s, background .18s, transform .15s;
}
.fl-list a:hover {
  color: var(--primary); border-color: var(--primary);
  background: var(--primary-light); transform: translateY(-1px);
}

/* 卡片 */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 16px; }
.card-hd { padding: 14px 18px; border-bottom: 1px solid var(--border); font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.card-hd .more { font-weight: 400; font-size: 13px; }
.card-bd { padding: 18px; }

/* 首页 hero */
.hero { background: linear-gradient(135deg, #2f6fed, #6b9bff); color: #fff; padding: 46px 0; margin-bottom: 22px; border-radius: 0 0 20px 20px; }
.hero h1 { font-size: 28px; margin: 0 0 8px; }
.hero p { margin: 0 0 22px; opacity: .92; }
.hero .search-box { display: flex; max-width: 560px; background: #fff; border-radius: 10px; overflow: hidden; }
.hero .search-box input { flex: 1; border: none; padding: 12px 16px; font-size: 15px; outline: none; }
.hero .search-box button { border: none; background: var(--primary); color: #fff; padding: 0 24px; cursor: pointer; font-size: 14px; }
.hero-stat { display: flex; gap: 34px; margin-top: 22px; flex-wrap: wrap; }
.hero-stat div b { display: block; font-size: 24px; font-weight: 600; }
.hero-stat div span { opacity: .9; font-size: 13px; }

/* 统计格 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat-box .n { font-size: 26px; font-weight: 700; color: var(--primary); }
.stat-box .t { color: var(--muted); font-size: 13px; }

/* 分类 */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cat-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; transition: .2s; }
.cat-item:hover { border-color: var(--primary); box-shadow: 0 6px 18px rgba(47, 111, 237, .12); transform: translateY(-2px); }
.cat-item h3 { margin: 0 0 6px; font-size: 15px; }
.cat-item p { margin: 0; color: var(--muted); font-size: 13px; }
.cat-item .meta { margin-top: 10px; font-size: 12px; color: var(--muted); display: flex; gap: 12px; }

/* 表格 */
table.tb { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tb th, table.tb td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
table.tb th { background: #fafbfe; font-weight: 600; color: var(--muted); white-space: nowrap; }
table.tb tr:hover td { background: #fafbff; }
table.tb td.nowrap { white-space: nowrap; }

/* 徽标 */
.badge { display: inline-block; padding: 1px 8px; border-radius: 20px; font-size: 12px; background: #eef1f6; color: var(--muted); }
.badge.blue { background: var(--primary-light); color: var(--primary); }
.badge.green { background: var(--success-light); color: var(--success); }
.badge.red { background: var(--danger-light); color: var(--danger); }
.badge.purple { background: #f3e8ff; color: #7c3aed; }
.badge.orange { background: #fff4e5; color: #c97b12; }

/* 表单 */
.form-item { margin-bottom: 16px; }
.form-item label { display: block; margin-bottom: 6px; font-size: 13px; color: #4b5563; font-weight: 500; }
.form-item .tip { font-size: 12px; color: var(--muted); margin-top: 4px; }
input[type=text], input[type=password], input[type=number], input[type=email], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid #d8dee9; border-radius: 8px; font-size: 14px; outline: none; background: #fff; color: var(--text); font-family: inherit;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47, 111, 237, .12); }
textarea { min-height: 90px; resize: vertical; line-height: 1.7; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.inline-form .form-item { margin-bottom: 0; }

/* 分页 */
.pager { margin-top: 16px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pager a.pg { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; color: var(--muted); }
.pager a.pg:hover { border-color: var(--primary); color: var(--primary); }
.pager a.pg.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pager a.pg.disabled { opacity: .5; pointer-events: none; }
.pager .pg-info { margin-left: 8px; color: var(--muted); font-size: 13px; }

/* 提示 */
.alert { padding: 11px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 13px; }
.alert.ok { background: var(--success-light); color: #1a7f52; border: 1px solid #c6ecda; }
.alert.err { background: var(--danger-light); color: #c02b2b; border: 1px solid #f8c9c9; }
.alert.warn { background: #fff4e5; color: #a96b0c; border: 1px solid #f7dfb8; }
.alert.info { background: var(--primary-light); color: var(--primary); border: 1px solid #d3e0fd; }
.empty { padding: 50px 0; text-align: center; color: var(--muted); }

/* 答题区 */
.quiz-wrap { max-width: 900px; margin: 0 auto; }
.quiz-bar { display: flex; justify-content: space-between; align-items: center; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 18px; margin-bottom: 14px; flex-wrap: wrap; gap: 10px; }
.progress-line { height: 8px; background: #eef1f6; border-radius: 6px; overflow: hidden; margin-top: 8px; }
.progress-line i { display: block; height: 100%; background: var(--primary); width: 0; transition: .3s; }
.q-title { font-size: 17px; line-height: 1.8; font-weight: 500; margin-bottom: 16px; white-space: pre-wrap; }
.opt-list { display: flex; flex-direction: column; gap: 10px; }
.opt { display: flex; gap: 10px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 9px; cursor: pointer; background: #fff; transition: .15s; }
.opt:hover { border-color: var(--primary); background: #fafcff; }
.opt.on { border-color: var(--primary); background: var(--primary-light); }
.opt.right { border-color: var(--success); background: var(--success-light); }
.opt.wrong { border-color: var(--danger); background: var(--danger-light); }
.opt .k { width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; flex: 0 0 24px; font-size: 13px; background: #fff; }
.opt.on .k { background: var(--primary); color: #fff; border-color: var(--primary); }
.opt .t { flex: 1; }
.result-box { margin-top: 16px; padding: 14px 16px; border-radius: 9px; background: #fafbfe; border: 1px solid var(--border); }
.result-box .row { display: flex; gap: 10px; margin-bottom: 6px; }
.result-box .row b { flex: 0 0 62px; color: var(--muted); font-weight: 500; }
.quiz-actions { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.timer { font-weight: 600; color: var(--danger); }

/* 题库列表 */
.q-item { border-bottom: 1px solid var(--border); padding: 14px 0; }
.q-item:last-child { border-bottom: none; }
.q-item .t { font-size: 15px; line-height: 1.8; }
.q-item .meta { margin-top: 6px; display: flex; gap: 12px; color: var(--muted); font-size: 12px; }

/* 排行 */
.rank-list td:first-child { width: 60px; }
.rank-no { display: inline-block; width: 24px; height: 24px; line-height: 24px; text-align: center; border-radius: 6px; background: #eef1f6; color: var(--muted); font-weight: 600; }
.rank-no.top1 { background: #ffeccc; color: #c97b12; }
.rank-no.top2 { background: #e8edf5; color: #6b7a90; }
.rank-no.top3 { background: #fbe6d8; color: #b06a34; }

/* 图表条 */
.bars { display: flex; align-items: flex-end; gap: 6px; height: 160px; padding-top: 10px; }
.bars .bar { flex: 1; background: var(--primary-light); border-radius: 4px 4px 0 0; position: relative; min-height: 2px; }
.bars .bar i { position: absolute; left: 0; bottom: 0; width: 100%; background: var(--primary); border-radius: 4px 4px 0 0; display: block; }
.bars-x { display: flex; gap: 6px; margin-top: 6px; color: var(--muted); font-size: 11px; }
.bars-x span { flex: 1; text-align: center; overflow: hidden; white-space: nowrap; }

/* 后台布局 */
.admin-wrap { display: flex; min-height: 100vh; }
.admin-side { width: 200px; background: #1f2937; color: #cbd5e1; flex: 0 0 200px; position: sticky; top: 0; align-self: flex-start; height: 100vh; overflow-y: auto; }
.admin-side .logo { color: #fff; padding: 0 18px; height: 60px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid #2c3a4d; }
.admin-side .logo span { background: var(--primary); }
.admin-side .menu { padding: 12px 0; }
.admin-side .menu .g { padding: 12px 18px 6px; font-size: 12px; color: #7c8ba1; }
.admin-side .menu a { display: block; padding: 9px 18px; color: #cbd5e1; font-size: 14px; border-left: 3px solid transparent; }
.admin-side .menu a:hover { background: #26334a; color: #fff; }
.admin-side .menu a.on { background: #26334a; color: #fff; border-left-color: var(--primary); }
.admin-main { flex: 1; min-width: 0; background: var(--bg); }
.admin-top { height: 60px; background: #fff; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 20px; position: sticky; top: 0; z-index: 30; }
.admin-body { padding: 20px; }
.admin-foot { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }

/* 管理后台顶栏用户区 */
.admin-userbar { display: flex; align-items: center; gap: 12px; }
.admin-ulink { display: inline-flex; align-items: center; gap: 5px; padding: 6px 10px; border-radius: 8px; color: var(--muted); font-size: 13px; transition: .15s; }
.admin-ulink:hover { background: var(--primary-light); color: var(--primary); }
.admin-uicon { font-size: 14px; }
.admin-usep { width: 1px; height: 18px; background: var(--border); }
.admin-uinfo { display: flex; align-items: center; gap: 9px; padding: 4px 10px 4px 4px; background: #f8fafc; border: 1px solid var(--border); border-radius: 24px; }
.admin-uavatar { width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), #6b9bff); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; flex: 0 0 30px; }
.admin-utxt { display: flex; align-items: center; gap: 6px; line-height: 1; }
.admin-uname { font-weight: 600; font-size: 13px; color: var(--text); white-space: nowrap; max-width: 90px; overflow: hidden; text-overflow: ellipsis; }
.admin-urole { font-size: 11px; color: var(--primary); background: var(--primary-light); padding: 1px 6px; border-radius: 10px; white-space: nowrap; }
@media (max-width: 720px) {
  .admin-userbar { flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
  .admin-uinfo { display: none; }
  .admin-usep { display: none; }
}

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.toolbar input[type=text], .toolbar select { width: auto; min-width: 130px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.setting-group { margin-bottom: 20px; }
.setting-group h3 { font-size: 15px; margin: 0 0 12px; padding-left: 8px; border-left: 3px solid var(--primary); }
table.form-tb td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
table.form-tb td:first-child { width: 160px; color: var(--muted); }

/* 登录页 */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #2f6fed, #6b9bff); }
.login-card { width: 380px; background: #fff; border-radius: 14px; box-shadow: 0 20px 50px rgba(10, 30, 80, .2); overflow: hidden; }
.login-card .hd { padding: 26px 30px 10px; text-align: center; }
.login-card .hd h2 { margin: 0; font-size: 20px; }
.login-card .hd p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.login-card .bd { padding: 20px 30px 30px; }
.login-card .ft { padding: 12px 30px; background: #fafbfe; text-align: center; font-size: 13px; border-top: 1px solid var(--border); }
.captcha-row { display: flex; gap: 10px; }
.captcha-row input { flex: 1; }
.captcha-row img { height: 40px; border-radius: 8px; cursor: pointer; border: 1px solid var(--border); }

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* 右侧抽屉 */
body.no-scroll { overflow: hidden; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); opacity: 0; visibility: hidden; transition: .25s; z-index: 200; }
.drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100%; width: 480px; max-width: 92vw;
  background: #fff; box-shadow: -8px 0 30px rgba(15, 23, 42, .18);
  transform: translateX(100%); transition: transform .28s ease; z-index: 210;
  display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-hd { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); background: #fff; }
.drawer-hd strong { font-size: 16px; font-weight: 600; }
.drawer-x { border: none; background: transparent; font-size: 22px; line-height: 1; color: var(--muted); cursor: pointer; padding: 0 4px; }
.drawer-x:hover { color: var(--text); }
.drawer-bd { padding: 20px; overflow-y: auto; flex: 1; padding-bottom: 84px; }
.drawer-ft {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 14px 20px; border-top: 1px solid var(--border); background: #fff;
  display: flex; justify-content: flex-end; gap: 10px; z-index: 5;
}
.drawer-ft .btn { min-width: 84px; }
.drawer-ft .btn.gray { background: #fff; }
@media (max-width: 640px) {
  .drawer { width: 100%; }
  .drawer-ft { padding: 12px 16px; }
}
@media (max-width: 640px) {
  .admin-wrap { flex-direction: column; }
  .admin-side { width: 100%; flex: none; position: static; height: auto; align-self: stretch; overflow: visible; }
  .admin-side .menu { display: flex; flex-wrap: wrap; }
  .admin-side .menu .g { display: none; }
  .admin-side .menu .mi-group { flex: 1 1 100%; }
  .admin-side .menu .mi-group.collapsed .mi-body { display: block; }
  .admin-side .menu .mi-caret { display: none; }
  .admin-side .menu .mi-body::before { display: none; }
  .admin-side .menu .mi-item { margin-left: 10px; padding-left: 28px; }
  .admin-side .menu .mi-item::before { left: 10px; }
  .cat-grid { grid-template-columns: 1fr; }
  .nav { overflow-x: auto; }
  .hero h1 { font-size: 22px; }
}

/* ============================================================
   UI 美化增强（前台 + 后台）
   ============================================================ */

/* 通用：按钮微交互与阴影 */
.btn { box-shadow: 0 1px 2px rgba(20, 40, 80, .08); }
.btn:hover { box-shadow: 0 4px 14px rgba(47, 111, 237, .28); }
.btn:active { transform: translateY(1px); box-shadow: none; }
.btn.gray { box-shadow: none; }
.btn.gray:hover { box-shadow: 0 4px 12px rgba(20, 40, 80, .1); }

/* 通用：卡片更柔和的阴影与圆角 */
.card { border-radius: 14px; box-shadow: 0 4px 18px rgba(20, 40, 80, .06); transition: box-shadow .2s, transform .2s; }

/* 通用：表格行悬浮高亮 */
table.tb tr:hover td { background: #f5f8ff; }

/* ---------------- 后台（管理后台 / 用户中心通用） ---------------- */
.admin-side { background: linear-gradient(180deg, #1f2937 0%, #18202e 100%); }
.admin-side .logo { font-size: 17px; letter-spacing: .5px; }
.admin-side .logo span {
  background: linear-gradient(135deg, #2f6fed, #6b9bff);
  box-shadow: 0 2px 8px rgba(47, 111, 237, .5);
}
.admin-side .menu .g {
  letter-spacing: 1px; opacity: .7; font-size: 11px;
  padding: 14px 18px 6px;
}
.admin-side .menu a {
  border-radius: 8px; margin: 2px 10px; padding: 10px 14px;
  transition: background .18s, color .18s, transform .12s;
}
.admin-side .menu a:hover { background: #26334a; color: #fff; transform: translateX(2px); }
.admin-side .menu a.on {
  background: linear-gradient(90deg, rgba(47, 111, 237, .22), rgba(47, 111, 237, .04));
  color: #fff; font-weight: 600;
  box-shadow: inset 3px 0 0 var(--primary);
}

/* ---------------- 折叠菜单（分组可收起） ---------------- */
.admin-side .menu .mi-group { margin: 6px 0; }
.admin-side .menu .mi-hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; margin: 2px 10px; border-radius: 8px;
  color: #cbd5e1; font-size: 14px; font-weight: 500; cursor: pointer; user-select: none;
  transition: background .18s, color .18s;
}
.admin-side .menu .mi-hd:hover { background: #26334a; color: #fff; }
.admin-side .menu .mi-hd-link {
  display: flex; align-items: center; gap: 9px; flex: 1; min-width: 0; padding: 0; margin: 0;
  border: none; background: transparent; color: inherit; text-decoration: none; font-weight: inherit;
}
.admin-side .menu .mi-hd-link:hover { background: transparent; color: inherit; transform: none; }
.admin-side .menu .mi-ico { font-size: 15px; width: 18px; text-align: center; flex: 0 0 18px; }
.admin-side .menu .mi-ico:empty { display: none; }
.admin-side .menu .mi-txt { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.admin-side .menu .mi-caret {
  border: none; background: transparent; color: #94a3b8; cursor: pointer;
  font-size: 12px; line-height: 1; padding: 4px 6px; transition: transform .2s, color .18s;
  flex: 0 0 22px; text-align: center;
}
.admin-side .menu .mi-caret:hover { color: #fff; }
.admin-side .menu .mi-group.collapsed .mi-caret { transform: rotate(-90deg); }
.admin-side .menu .mi-body { overflow: hidden; position: relative; }
.admin-side .menu .mi-body::before {
  content: ""; position: absolute; left: 24px; top: 6px; bottom: 6px; width: 1px; background: #2c3a4d;
}
.admin-side .menu .mi-group.collapsed .mi-body { display: none; }
.admin-side .menu .mi-item {
  display: block; position: relative;
  padding: 9px 14px 9px 38px; margin: 2px 10px 2px 18px;
  color: #aebacb; font-size: 13.5px; border-radius: 8px; text-decoration: none;
  border-left: 3px solid transparent; transition: background .18s, color .18s, transform .12s;
}
.admin-side .menu .mi-item::before {
  content: ""; position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  width: 5px; height: 5px; border-radius: 50%; background: #64748b;
}
.admin-side .menu .mi-item:hover { background: #26334a; color: #fff; transform: translateX(2px); }
.admin-side .menu .mi-item:hover::before { background: #fff; }
.admin-side .menu .mi-item.on {
  background: linear-gradient(90deg, rgba(47, 111, 237, .22), rgba(47, 111, 237, .04));
  color: #fff; font-weight: 600;
  border-left-color: var(--primary);
  box-shadow: inset 3px 0 0 var(--primary);
}
.admin-side .menu .mi-item.on::before { background: var(--primary); }
.admin-side .menu .mi-single {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 14px; margin: 2px 10px;
  color: #cbd5e1; font-size: 14px; border-radius: 8px; text-decoration: none;
  border-left: 3px solid transparent; transition: background .18s, color .18s, transform .12s;
}
.admin-side .menu .mi-single:hover { background: #26334a; color: #fff; transform: translateX(2px); }
.admin-side .menu .mi-single.on {
  background: linear-gradient(90deg, rgba(47, 111, 237, .22), rgba(47, 111, 237, .04));
  color: #fff; font-weight: 600;
  border-left-color: var(--primary);
  box-shadow: inset 3px 0 0 var(--primary);
}

/* 用户级别徽标 */
.badge.lv-normal { background: #eef1f6; color: #5b6b82; }
.badge.lv-person { background: var(--primary-light); color: var(--primary); }
.badge.lv-senior { background: linear-gradient(135deg, #fde68a, #fbbf24); color: #8a5a00; }
.admin-top {
  box-shadow: 0 2px 12px rgba(15, 23, 42, .06); z-index: 20;
  font-size: 16px;
}
.admin-top a { color: var(--muted); transition: color .15s; }
.admin-top a:hover { color: var(--primary); }
.admin-body { padding: 24px; }

/* 后台卡片头部左侧强调竖条 */
.admin-main .card-hd { position: relative; padding-left: 16px; }
.admin-main .card-hd::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 4px; height: 16px; border-radius: 3px; background: linear-gradient(180deg, var(--primary), #6b9bff);
}

/* 后台统计卡片：左侧色条 + 悬浮微动 */
.admin-main .stat-box {
  border-radius: 14px; position: relative; overflow: hidden;
  border-left: 4px solid var(--primary);
  transition: transform .2s, box-shadow .2s;
}
.admin-main .stat-box:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(20, 40, 80, .12); }
.admin-main .stat-grid > :nth-child(2) .stat-box { border-left-color: var(--success); }
.admin-main .stat-grid > :nth-child(3) .stat-box { border-left-color: var(--warn); }
.admin-main .stat-grid > :nth-child(4) .stat-box { border-left-color: var(--danger); }
.admin-main .stat-box .n { letter-spacing: -.5px; }

/* ---------------- 前台（站点 / 用户前台） ---------------- */
.topbar { box-shadow: 0 2px 16px rgba(15, 23, 42, .06); }
.nav a { border-radius: 8px; transition: background .18s, color .18s; }
.nav a:hover { background: var(--primary-light); color: var(--primary); }

/* 首页 Hero：渐变 + 光晕 + 网格 */
.hero {
  background:
    radial-gradient(1100px 380px at 82% -12%, rgba(255, 255, 255, .2), transparent 60%),
    linear-gradient(135deg, #2f6fed, #5b8def 55%, #6b9bff);
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 38px 38px; opacity: .55; pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { letter-spacing: .5px; }
.search-box { box-shadow: 0 12px 32px rgba(10, 30, 80, .2); }
.search-box button { transition: background .15s; }
.search-box button:hover { background: var(--primary-dark); }
.hero-stat b { font-size: 28px; }

/* 分类卡片：顶部色条 + 图标 + 悬浮上移 */
.cat-item { border-radius: 14px; position: relative; overflow: hidden; transition: transform .2s, box-shadow .2s, border-color .2s; }
.cat-item::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--primary), #6b9bff); opacity: 0; transition: .2s;
}
.cat-item:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(47, 111, 237, .16); border-color: var(--primary); }
.cat-item:hover::before { opacity: 1; }
.cat-item h3 { display: flex; align-items: center; gap: 8px; }
.cat-item h3::before { content: "📚"; font-size: 16px; }

/* 前台卡片悬浮（轻微） */
.container .card { transition: box-shadow .2s; }
.container .card:hover { box-shadow: 0 10px 30px rgba(20, 40, 80, .1); }

/* 前台统计数字渐变 */
.container .stat-box .n {
  background: linear-gradient(135deg, var(--primary), #6b9bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 页脚更精致 */
.footer { border-top: none; background: #fafbfe; }

/* 用户中心（用户后台）复用与管理后台一致的布局与配色 */
.uc-welcome {
  background: linear-gradient(135deg, #2f6fed, #5b8def);
  color: #fff; border-radius: 14px; padding: 22px 24px; margin-bottom: 16px;
  position: relative; overflow: hidden; box-shadow: 0 8px 26px rgba(47, 111, 237, .22);
}

/* 用户后台顶栏复用 .admin-userbar / .admin-uinfo（与管理后台一致） */
.uc-welcome h3 { margin: 0 0 6px; font-size: 19px; }
.uc-welcome p { margin: 0; opacity: .92; font-size: 13px; }
.uc-welcome::after {
  content: ""; position: absolute; right: -30px; top: -30px;
  width: 170px; height: 170px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 70%);
}

/* 统计卡片 */
.stat-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 16px; }
.stat {
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 18px;
  border-left: 4px solid var(--primary); position: relative; overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.stat:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(20, 40, 80, .12); }
.stat .n { font-size: 26px; font-weight: 700; color: var(--primary); letter-spacing: -.5px; }
.stat .t { color: var(--muted); font-size: 13px; margin-top: 2px; }
.stat .ic { position: absolute; right: 14px; top: 14px; font-size: 20px; opacity: .85; }

/* 快捷操作 */
.quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; }
.qbtn {
  display: flex; align-items: center; gap: 12px; padding: 16px 18px;
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  color: var(--text); font-weight: 600; transition: .2s;
}
.qbtn:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(15, 118, 110, .14); }
.qbtn .qi {
  width: 38px; height: 38px; border-radius: 10px; flex: 0 0 38px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}

/* 信息列表（账号信息页） */
.info-list { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.info-list .row { display: flex; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.info-list .row:last-child { border-bottom: none; }
.info-list .row span { color: var(--muted); }
.info-list .row b { font-weight: 600; }

/* 公开链接复制框 */
.link-box { display: flex; gap: 8px; margin-top: 6px; max-width: 380px; }
.sl-input { flex: 1; background: #f7f9fc; font-size: 13px; }
.bid { display: inline-block; min-width: 30px; padding: 1px 7px; border-radius: 6px; background: var(--primary-light); color: var(--primary); font-weight: 600; font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* 选填标记 / 普通提示 */
.optional { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.tip { font-size: 12px; color: var(--muted); margin-top: 4px; }
.hint { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ============ 用户后台组件补强（已与管理后台统一蓝主题，不再使用 user-theme 包裹） ============ */
/* 卡片内说明区块（导入页格式说明） */
.card-bd h4 {
  margin: 0 0 10px; font-size: 15px; padding-left: 12px; position: relative; color: var(--text);
}
.card-bd h4::before {
  content: ""; position: absolute; left: 0; top: 3px; bottom: 3px; width: 4px; border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--primary-dark));
}
.card-bd p { color: var(--muted); line-height: 1.85; margin: 6px 0; }
.card-bd pre {
  background: #f6f9fb; padding: 14px 16px; border-radius: 10px; border: 1px solid var(--border);
  overflow: auto; font-size: 13px; line-height: 1.75; color: #334155;
}
.card-bd code {
  background: var(--primary-light); color: var(--primary); padding: 1px 6px; border-radius: 5px; font-size: 12px;
}
/* 工具栏（我的题库页头部：导入按钮 + 说明） */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
}
.toolbar .hint { color: var(--muted); font-size: 13px; flex: 1; min-width: 220px; line-height: 1.6; }

@media (max-width: 900px) {
  .stat-row { grid-template-columns: repeat(3, 1fr); }
  .quick { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}

/* 用户后台：分类管理 */
.cg-sec { margin-bottom: 16px; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.cg-title { background: #f3f6f9; padding: 10px 14px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.cg-num { font-size: 12px; color: var(--muted); font-weight: 400; }
.cg-list { padding: 8px 14px; }
.cg-empty { color: var(--muted); font-size: 13px; padding: 6px 0; }
.cg-item { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.cg-item:last-child { border-bottom: none; }
.cg-name { flex: 1; font-weight: 500; }
.cg-form { margin: 0; }
.cg-form select { min-width: 140px; }

/* 用户后台：试卷/考试题目预览 */
.q-ttl { margin: 18px 0 10px; font-size: 15px; }
.q-item { border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; margin-bottom: 10px; }
.q-hd { font-weight: 500; line-height: 1.6; }
.q-score { color: var(--warning); font-size: 12px; margin-left: 6px; }
.q-opts { margin: 8px 0 4px; padding-left: 18px; color: #334; }
.q-opts li { margin: 2px 0; }
.q-ans { color: #556; font-size: 13px; margin-top: 4px; }

/* 翻页（用户后台列表通用） */
.pager { display: flex; align-items: center; gap: 12px; justify-content: center; padding: 14px 0; color: var(--muted); font-size: 13px; }
.pager a { color: var(--primary); text-decoration: none; }
.pager a:hover { text-decoration: underline; }

/* ============================================================
   答题页 AI 解析模块
   ============================================================ */
.ai-box {
  margin-top: 16px; border-radius: 14px; overflow: hidden;
  border: 1px solid #d9e5fc;
  background: linear-gradient(180deg, #f4f8ff 0%, #ffffff 46%);
  box-shadow: 0 4px 18px rgba(47, 111, 237, .08);
}
.ai-box-hd {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 13px 16px; flex-wrap: wrap;
  border-bottom: 1px solid transparent;
}
.ai-box.loaded .ai-box-hd { border-bottom-color: #e6eefc; }
.ai-box-ttl { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ai-box-ttl .ai-ico {
  width: 26px; height: 26px; border-radius: 8px; flex: 0 0 26px;
  background: linear-gradient(135deg, #2f6fed, #6f9dff);
  color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .5px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 8px rgba(47, 111, 237, .32);
}
.ai-ttl-txt { display: flex; flex-direction: column; line-height: 1.4; min-width: 0; }
.ai-ttl-txt b { font-size: 15px; color: #1e293b; }
.ai-tip { color: var(--muted); font-size: 12px; }
.ai-box-act { display: flex; gap: 8px; flex: 0 0 auto; flex-wrap: wrap; }
.ai-btn {
  border: none; cursor: pointer; white-space: nowrap;
  padding: 8px 15px; border-radius: 9px; font-size: 13px; font-weight: 600;
  color: #fff; background: linear-gradient(135deg, #2f6fed, #5b8df7);
  box-shadow: 0 3px 10px rgba(47, 111, 237, .26);
  transition: transform .15s, box-shadow .18s, opacity .18s, background .18s;
}
.ai-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(47, 111, 237, .32); }
.ai-btn:disabled { opacity: .7; cursor: default; transform: none; box-shadow: none; }
.ai-btn.ghost {
  color: #4b6b9a; background: #fff; font-weight: 500;
  border: 1px solid #d5e2f8; box-shadow: none;
}
.ai-btn.ghost:hover { background: #f2f7ff; color: var(--primary); border-color: #b9d0f7; }

/* 解析内容 */
.ai-box-bd {
  display: none; margin: 0 16px 16px; padding: 15px 16px;
  border-radius: 11px; background: #fff;
  border: 1px solid #e8eefb;
  color: #3d4a5c; font-size: 14px;
}
.ai-meta {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding-bottom: 10px; margin-bottom: 12px; border-bottom: 1px dashed #e6ecf7;
}
.ai-tag {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: 11.5px; font-weight: 600; color: var(--primary);
  background: #eaf1ff; border: 1px solid #d9e5fc;
}
.ai-note { color: #9aa7b8; font-size: 11.5px; }
.ai-content { line-height: 1.9; }
.ai-sec { margin-bottom: 14px; }
.ai-sec:last-child { margin-bottom: 0; }
.ai-sec-hd {
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
  color: #1f2d3d; font-size: 14.5px;
}
.ai-sec-no {
  width: 20px; height: 20px; border-radius: 6px; flex: 0 0 20px;
  background: linear-gradient(135deg, #2f6fed, #6f9dff);
  color: #fff; font-size: 11.5px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.ai-sec-hd b { font-weight: 600; }
.ai-sec-bd { padding-left: 28px; }
.ai-p { margin: 2px 0; }
.ai-li { position: relative; padding-left: 14px; margin: 2px 0; }
.ai-li::before {
  content: ""; position: absolute; left: 2px; top: 11px;
  width: 5px; height: 5px; border-radius: 50%; background: #9dbcf5;
}
.ai-content strong { color: #1f2d3d; }

/* 加载 / 错误 */
.ai-box-bd.loading {
  display: flex; align-items: center; gap: 9px;
  color: var(--muted); font-size: 13px; background: #f8fbff;
}
.ai-box-bd.error { color: var(--danger); background: #fff6f6; border-color: #f6cfd0; }
.ai-spin {
  width: 15px; height: 15px; flex: 0 0 15px; border-radius: 50%;
  border: 2px solid #d3e2fb; border-top-color: var(--primary);
  display: inline-block; animation: ai-rotate .8s linear infinite;
}
@keyframes ai-rotate { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  .ai-box-hd { padding: 12px; }
  .ai-box-ttl { width: 100%; }
  .ai-box-act { width: 100%; }
  .ai-box-act .ai-btn { flex: 1 1 auto; text-align: center; }
  .ai-box-bd { margin: 0 12px 12px; padding: 12px; font-size: 13.5px; }
  .ai-sec-bd { padding-left: 0; }
}

/* ============================================================
   公开题库浏览页（site/bank 分享链接）
   ============================================================ */
.muted { color: var(--muted); }
.btn.big { padding: 11px 24px; font-size: 15px; border-radius: 10px; }

.bank-page { padding-top: 20px; padding-bottom: 8px; }

/* 头部横幅 */
.bank-hero {
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; margin-bottom: 16px;
  padding: 20px 22px; border-radius: 14px;
  background: linear-gradient(135deg, #2f6fed 0%, #5b8df7 55%, #7aa7ff 100%);
  color: #fff; box-shadow: 0 10px 28px rgba(47, 111, 237, .26);
  position: relative; overflow: hidden;
}
.bank-hero::after {
  content: ""; position: absolute; right: -60px; top: -70px;
  width: 220px; height: 220px; border-radius: 50%;
  background: rgba(255, 255, 255, .1);
}
.bank-hero-main { min-width: 0; position: relative; z-index: 1; }
.bank-hero-ttl { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.bank-hero-ttl h1 { margin: 0; font-size: 22px; line-height: 1.4; color: #fff; font-weight: 700; }
.bank-hero-ttl .badge {
  background: rgba(255, 255, 255, .22); color: #fff;
  border: 1px solid rgba(255, 255, 255, .35); font-weight: 500;
}
.bank-hero-sub {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 9px; font-size: 13px; color: rgba(255, 255, 255, .86);
}
.bank-hero-sub b { color: #fff; font-weight: 600; }
.bh-dot { width: 4px; height: 4px; border-radius: 50%; background: rgba(255, 255, 255, .55); }
.bank-hero-act { position: relative; z-index: 1; flex: 0 0 auto; }
.bank-hero-act form { margin: 0; }
.bank-hero-act .btn {
  background: #fff; color: var(--primary); border-color: #fff;
  box-shadow: 0 6px 18px rgba(15, 40, 90, .18);
}
.bank-hero-act .btn:hover { background: #f2f7ff; color: var(--primary-dark, #1d54c4); transform: translateY(-1px); }

/* 题型筛选 */
.bank-filter .card-bd { padding: 14px 18px; }
.filter-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.filter-label {
  font-size: 13px; font-weight: 600; color: var(--text);
  padding-left: 10px; position: relative; flex: 0 0 auto;
}
.filter-label::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 14px; border-radius: 2px; background: var(--primary);
}
.filter-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.fpill {
  display: inline-block; padding: 6px 14px; border-radius: 20px;
  font-size: 13px; text-decoration: none;
  color: #55647a; background: #f4f6fa; border: 1px solid #e6eaf2;
  transition: color .18s, background .18s, border-color .18s, transform .15s;
}
.fpill:hover { color: var(--primary); background: #eef4ff; border-color: #c9dbfb; transform: translateY(-1px); }
.fpill.on {
  color: #fff; font-weight: 600; border-color: transparent;
  background: linear-gradient(135deg, #2f6fed, #5b8df7);
  box-shadow: 0 4px 12px rgba(47, 111, 237, .3);
}
.filter-tip { margin-top: 12px; font-size: 12.5px; color: var(--muted); line-height: 1.7; }

/* 题目列表 */
.bank-page .q-list { display: flex; flex-direction: column; }
.bank-page .q-item {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; margin-bottom: 12px; background: #fff;
  transition: border-color .18s, box-shadow .18s;
}
.bank-page .q-item:last-child { margin-bottom: 0; }
.bank-page .q-item:hover { border-color: #c9dbfb; box-shadow: 0 6px 18px rgba(20, 40, 80, .07); }
.bank-page .q-t { display: flex; align-items: flex-start; gap: 9px; flex-wrap: wrap; }
.bank-page .q-no {
  width: 22px; height: 22px; flex: 0 0 22px; margin-top: 4px;
  border-radius: 6px; font-size: 12px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--primary); background: var(--primary-light);
}
.bank-page .q-ttl { flex: 1; min-width: 0; font-size: 15px; line-height: 1.8; color: var(--text); }
.bank-page .q-t .badge { margin-top: 4px; flex: 0 0 auto; }
.bank-page .q-o {
  margin: 10px 0 0 31px; display: grid; gap: 6px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.bank-page .q-op { font-size: 13.5px; line-height: 1.75; color: #4a5768; }
.bank-page .q-op b { color: #2f6fed; margin-right: 2px; }
.bank-page .q-meta {
  margin: 10px 0 0 31px; padding-top: 10px; border-top: 1px dashed var(--border);
  display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--muted);
}
.bank-page .q-ans { color: #55647a; }
.bank-page .q-ans b { color: var(--success); font-weight: 600; }
.bank-page .q-ana { flex: 1; min-width: 200px; line-height: 1.75; }

@media (max-width: 640px) {
  .bank-hero { padding: 16px; }
  .bank-hero-ttl h1 { font-size: 18px; }
  .bank-hero-act, .bank-hero-act .btn { width: 100%; text-align: center; }
  .bank-page .q-o, .bank-page .q-meta { margin-left: 0; }
  .bank-page .q-o { grid-template-columns: 1fr; }
}

/* ============================================================
   支付管理 / 分销系统 模块补充样式
   ============================================================ */
.pay-fields { margin-top: 6px; }
.pay-fields .form-item { margin-bottom: 12px; }
.pay-summary { font-size: 12.5px; color: var(--muted); word-break: break-all; max-width: 320px; }

.wd-stats { display: flex; gap: 14px; flex-wrap: wrap; }
.wd-stat {
  flex: 1; min-width: 140px; background: #f6f9ff; border: 1px solid #e3ecfb;
  border-radius: 12px; padding: 14px 16px;
}
.wd-stat b { display: block; font-size: 22px; color: #1f2d3d; font-weight: 700; }
.wd-stat span { font-size: 12.5px; color: var(--muted); }

/* 佣金中心 */
.comm-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
.comm-stat { border: 1px solid var(--border); border-radius: 10px; padding: 14px; background: #fff; }
.comm-stat .v { font-size: 20px; font-weight: 700; color: var(--primary); }
.comm-stat .l { color: var(--muted); font-size: 12px; margin-top: 4px; }
.copy-line { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.copy-line code { background: #f3f4f6; padding: 5px 8px; border-radius: 6px; flex: 1; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 开通会员套餐 */
.plan-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; margin-top: 12px; }
.plan { border: 1px solid var(--border); border-radius: 12px; padding: 18px 16px; text-align: center; background: #fff; }
.plan-cur { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(47,111,237,.12); }
.plan-name { font-size: 16px; font-weight: 700; }
.plan-price { font-size: 26px; font-weight: 800; color: var(--primary); margin: 8px 0; }
.plan-level { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.plan-tag { display: inline-block; padding: 6px 14px; border-radius: 8px; background: var(--primary-light); color: var(--primary); font-weight: 600; }

@media (max-width: 680px) {
  .comm-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 支付渠道配置页 ===== */
.pay-channel-notice {
  margin-bottom: 14px;
  line-height: 1.7;
  font-size: 13px;
}
.pay-channel-notice strong { font-size: 14px; }

/* 开关行：标签 + 开关横排 */
.pay-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.pay-toggle-row label:first-child {
  font-weight: 600; margin-bottom: 0;
}

/* Switch 开关 */
.switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; inset: 0;
  background-color: #ccc; border-radius: 24px;
  transition: .25s;
}
.slider::before {
  content: ""; position: absolute; height: 18px; width: 18px;
  left: 3px; bottom: 3px; background: #fff;
  border-radius: 50%; transition: .25s;
}
.switch input:checked + .slider { background-color: var(--primary); }
.switch input:checked + .slider::before { transform: translateX(20px); }

/* 子支付方式多选 */
.pay-sub-methods { display: flex; flex-wrap: wrap; gap: 8px; }
.pay-sub-chk {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 14px; border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; font-size: 13px;
  user-select: none; transition: border-color .15s, background .15s;
}
.pay-sub-chk:hover { border-color: var(--primary); }
.pay-sub-chk input[type="checkbox"] { accent-color: var(--primary); }
.pay-sub-chk input:checked + span { color: var(--primary); font-weight: 600; }

/* ===== 用户端支付页（开通会员） ===== */
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.pay-order { text-align: center; padding: 18px 0 10px; }
.pay-amount { font-size: 36px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.pay-no { color: var(--muted); font-size: 13px; margin-top: 4px; }
.pay-status { margin-top: 10px; }
.pay-channel { border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; margin: 16px 0; background: var(--primary-light); }
.pc-label { font-size: 12px; color: var(--muted); }
.pc-name { font-size: 16px; font-weight: 700; margin: 2px 0 6px; }
.pc-desc { font-size: 13px; color: var(--text); line-height: 1.6; }
.pay-form { margin-top: 6px; }

/* ============================================================
   支付渠道配置页（美化重做）
   ============================================================ */
.pay-ch { max-width: 860px; }

/* 渠道横幅 */
.pay-ch-banner {
  position: relative; overflow: hidden;
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px; border-radius: 16px; margin-bottom: 16px;
  background: linear-gradient(135deg, var(--pc, #2f6fed), var(--pc2, #1f6fd8));
  color: #fff; box-shadow: 0 12px 28px rgba(20, 40, 80, .16);
}
.pay-ch-banner::after {
  content: ""; position: absolute; right: -40px; top: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: rgba(255, 255, 255, .12);
}
.pay-ch-ic {
  position: relative; z-index: 1; flex: 0 0 54px;
  width: 54px; height: 54px; border-radius: 15px;
  background: rgba(255, 255, 255, .2);
  display: flex; align-items: center; justify-content: center; font-size: 28px;
}
.pay-ch-meta { position: relative; z-index: 1; flex: 1; min-width: 0; }
.pay-ch-name { font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.pay-ch-sub { font-size: 13px; opacity: .92; margin-top: 3px; }
.pay-ch-state {
  position: relative; z-index: 1; flex: 0 0 auto;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600;
  background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .3);
  backdrop-filter: blur(2px);
}
.pay-ch-state.on { background: rgba(255, 255, 255, .96); color: #0a7a3e; border-color: #fff; }
.pay-ch-state.off { color: #fff; }
.pay-ch-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 3px rgba(255, 255, 255, .25); }
.pay-ch-state.off .pay-ch-dot { background: #ffd5d5; }

/* 顶部渠道切换 */
.pay-ch-switch { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.pay-ch-tab {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 15px; border-radius: 10px; font-size: 13.5px; font-weight: 500;
  background: #fff; border: 1px solid var(--border); color: var(--muted);
  transition: color .18s, border-color .18s, background .18s, transform .15s, box-shadow .18s;
}
.pay-ch-tab:hover { color: var(--text); border-color: #cdd6e6; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(20, 40, 80, .08); }
.pay-ch-tab-ic { font-size: 16px; }
.pay-ch-tab.on {
  color: var(--tc, var(--primary)); border-color: var(--tc, var(--primary));
  background: color-mix(in srgb, var(--tc, var(--primary)) 8%, #fff);
  font-weight: 600; box-shadow: 0 4px 12px rgba(20, 40, 80, .1);
}

/* 说明条 */
.pay-ch-tip { background: var(--primary-light); color: var(--primary); border: 1px solid #d6e4fd; line-height: 1.7; }
.pay-ch-tip strong { display: block; margin-bottom: 2px; font-size: 14px; }
.pay-ch-tip p { margin: 0; font-size: 13px; line-height: 1.75; }

/* 配置分区卡片 */
.pay-sec { margin-bottom: 16px; border-radius: 14px; overflow: hidden; }
.pay-sec-hd {
  display: flex; align-items: center; gap: 9px;
  padding: 14px 18px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 15px;
}
.pay-sec-bar { width: 4px; height: 15px; border-radius: 3px; background: linear-gradient(180deg, var(--primary), #6b9bff); }
.pay-sec-bd { padding: 16px 18px; }

/* 开关行（标题 + 说明 + 开关横排） */
.pay-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 13px 0; border-bottom: 1px dashed var(--border);
}
.pay-row:last-child { border-bottom: none; }
.pay-row-main { min-width: 0; }
.pay-row-t { font-size: 14px; font-weight: 500; color: var(--text); }
.pay-row-d { font-size: 12.5px; color: var(--muted); margin-top: 2px; line-height: 1.6; }
.pay-row-ctl { flex: 0 0 auto; }

/* 接口参数两列网格 */
.pay-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 20px; }
.pay-grid .form-item { margin-bottom: 0; }
.pay-sub-item { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--border); }

/* 操作区 */
.pay-actions { display: flex; gap: 12px; margin-top: 4px; }

@media (max-width: 680px) {
  .pay-grid { grid-template-columns: 1fr; }
  .pay-ch-banner { flex-wrap: wrap; }
  .pay-ch-state { order: 3; flex: 1 1 100%; justify-content: center; }
}

/* ============================================================
   用户端支付方式选择卡片（美化重做）
   ============================================================ */

/* 订单信息区 */
.pay-order-info {
  display: none; /* 已由 .poi-box 替代 */
}

/* 订单信息横幅 */
.poi-box {
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8ecfa 50%, #f5f0ff 100%);
  border-radius: 14px; padding: 24px 28px;
  margin-bottom: 22px; position: relative; overflow: hidden;
}
.poi-box::before {
  content: ""; position: absolute; right: -30px; top: -40px;
  width: 160px; height: 160px; border-radius: 50%;
  background: rgba(47, 127, 238, .06);
}
.poi-box::after {
  content: ""; position: absolute; left: -20px; bottom: -35px;
  width: 120px; height: 120px; border-radius: 50%;
  background: rgba(111, 66, 200, .05);
}
.poi-inner { position: relative; z-index: 1; }
.poi-amount {
  font-size: 36px; font-weight: 800; color: var(--primary);
  line-height: 1.1; letter-spacing: -0.8px;
}
.poi-no {
  color: var(--muted); font-size: 13px; margin-top: 6px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: .3px;
}
.poi-badge { position: relative; z-index: 1; flex: 0 0 auto; }

/* 支付方式区域 */
.pm-section { margin-top: 2px; }
.pm-title {
  font-size: 15px; font-weight: 600; color: var(--text);
  margin-bottom: 14px; padding-left: 2px;
  display: flex; align-items: center; gap: 7px;
}
.pm-title::before {
  content: ""; width: 3px; height: 16px; border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), #6b9bff);
}
.pm-list { display: flex; flex-direction: column; gap: 10px; }

/* 单张支付方式卡片 */
.pm-card {
  display: block;
  border: 1.5px solid var(--border); border-radius: 14px;
  background: #fff; cursor: pointer;
  transition: border-color .2s, box-shadow .2s, transform .15s, background .2s;
  position: relative; overflow: hidden;
}
.pm-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: transparent;
  transition: background .2s;
}
.pm-card:hover {
  border-color: var(--primary); box-shadow: 0 6px 24px rgba(47, 127, 238, .12);
  transform: translateY(-2px);
}
.pm-card:hover::before { background: var(--primary); }
.pm-card:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(47, 127, 238, .1); }

.pm-card-inner {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 20px;
}

/* 图标 */
.pm-icon {
  flex: 0 0 48px; width: 48px; height: 48px; border-radius: 14px;
  background: #f0f4ff; display: flex; align-items: center; justify-content: center;
  font-size: 24px; line-height: 1; transition: transform .2s;
}
.pm-card:hover .pm-icon { transform: scale(1.08); }

/* 文字区 */
.pm-detail { flex: 1; min-width: 0; }
.pm-name { font-size: 15.5px; font-weight: 600; color: var(--text); }
.pm-desc { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

/* 立即支付按钮 */
.pm-btn {
  flex: 0 0 auto; white-space: nowrap;
  padding: 10px 24px !important; font-size: 14px !important; font-weight: 600 !important;
  border-radius: 10px !important;
  transition: background .18s, box-shadow .18s, transform .15s !important;
}
.pm-btn:hover { transform: translateY(-1px) !important; box-shadow: 0 4px 14px rgba(47, 127, 238, .25) !important; }
.pm-btn:active { transform: translateY(0) !important; }

/* 底部提示 */
.pm-footer {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  margin-top: 18px; padding: 12px 16px;
  font-size: 13px; color: var(--muted);
  background: #fafbfc; border-radius: 10px;
  line-height: 1.6;
}
.pm-footer svg { flex-shrink: 0; opacity: .65; }

/* 无渠道空状态 */
.pm-empty {
  text-align: center; padding: 36px 20px 28px;
}
.pm-empty-icon {
  font-size: 42px; margin-bottom: 12px; filter: grayscale(.3);
}
.pm-empty-text {
  font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px;
}
.pm-empty-sub {
  font-size: 13px; color: var(--muted); line-height: 1.6; max-width: 360px; margin: 0 auto;
}

@media (max-width: 520px) {
  .poi-box { padding: 18px 20px; flex-direction: column; text-align: center; gap: 12px; }
  .poi-amount { font-size: 32px; }
  .pm-card-inner { gap: 12px; padding: 14px 16px; }
  .pm-icon { flex: 0 0 42px; width: 42px; height: 42px; font-size: 21px; border-radius: 12px; }
  .pm-name { font-size: 14.5px; }
  .pm-btn { padding: 9px 18px !important; font-size: 13px !important; }
}