:root {
  --brand: #2e6b4f;
  --brand-dark: #22513c;
  --brand-light: #e8f1ec;
  --accent: #c8622c;
  --danger: #c0392b;
  --warn: #d68910;
  --ok: #2e8b57;
  --bg: #f6f5f1;
  --card: #ffffff;
  --line: #e0ddd5;
  --text: #22302a;
  --muted: #6b7a72;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------- 顶栏 */
.topbar {
  background: var(--brand);
  color: #fff;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 22px;
  height: 58px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar .logo { font-size: 19px; font-weight: 700; letter-spacing: .5px; }
.topbar nav { display: flex; gap: 18px; flex: 1; }
.topbar nav a { color: #dfeae4; font-size: 15px; padding: 4px 0; }
.topbar nav a:hover, .topbar nav a.on { color: #fff; border-bottom: 2px solid #fff; text-decoration: none; }

.demo-badge {
  background: var(--accent); color: #fff; border-radius: 4px;
  padding: 3px 10px; font-size: 13px; font-weight: 700; white-space: nowrap;
}
.demo-badge.prod { background: var(--brand-dark); }

/* ---------------------------------------------------------- 布局 */
.wrap { max-width: 1180px; margin: 0 auto; padding: 22px 20px 60px; }
.wrap.narrow { max-width: 860px; }

h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 26px 0 12px; padding-left: 10px; border-left: 4px solid var(--brand); }
h3 { font-size: 17px; margin: 18px 0 8px; }
.muted { color: var(--muted); font-size: 14px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 18px 20px; margin-bottom: 16px;
}
.card.tight { padding: 12px 14px; }
.grid { display: grid; gap: 14px; }
.grid.c3 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid.c4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.grid.c2 { grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.spacer { flex: 1; }

/* ---------------------------------------------------------- 表格 */
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--brand-light); font-weight: 600; color: var(--brand-dark); }
tbody tr:hover { background: #fafaf7; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 控件 */
button, .btn {
  display: inline-block; border: 1px solid var(--brand); background: var(--brand);
  color: #fff; border-radius: 5px; padding: 7px 16px; font-size: 15px;
  cursor: pointer; font-family: inherit;
}
button:hover, .btn:hover { background: var(--brand-dark); text-decoration: none; color: #fff; }
.btn.ghost { background: #fff; color: var(--brand); }
.btn.ghost:hover { background: var(--brand-light); color: var(--brand-dark); }
.btn.warn { background: var(--warn); border-color: var(--warn); }
.btn.danger { background: var(--danger); border-color: var(--danger); }
.btn.sm { padding: 4px 10px; font-size: 14px; }
.btn.lg { padding: 12px 26px; font-size: 18px; border-radius: 8px; }

/* 禁用态必须一眼看出来 —— 否则学员会一直点没反应的按钮 */
button:disabled, .btn:disabled {
  background: #ececec; border-color: #dcdcdc; color: #a6a6a6;
  cursor: not-allowed; opacity: .75;
}
button:disabled:hover, .btn:disabled:hover {
  background: #ececec; border-color: #dcdcdc; color: #a6a6a6;
}
.btn.ghost:disabled { background: #f6f6f6; }
.btn.on { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn.ghost.on { background: var(--brand); color: #fff; }

input, select, textarea {
  font-family: inherit; font-size: 15px; padding: 7px 10px;
  border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-light); border-color: var(--brand); }
label { font-size: 15px; }
textarea { width: 100%; }

/* ---------------------------------------------------------- 标签 */
.tag {
  display: inline-block; padding: 2px 9px; border-radius: 12px;
  font-size: 13px; background: var(--brand-light); color: var(--brand-dark); margin-right: 6px;
}
.tag.vip { background: #fdece0; color: var(--accent); }
.tag.normal { background: #eee; color: #666; }
.tag.danger { background: #fdecea; color: var(--danger); }
.tag.warn { background: #fdf3e0; color: var(--warn); }
.tag.ok { background: #e7f4ec; color: var(--ok); }
.tag.sim { background: #f0e9f7; color: #7b4ea8; }

/* 可勾选标签（建档时的不适宜情形） */
.pick {
  display: inline-flex; align-items: center; gap: 5px; cursor: pointer;
  padding: 4px 11px; border-radius: 12px; font-size: 13px;
  background: #f2f2f2; color: #444; user-select: none;
}
.pick input { margin: 0; }
.pick:has(input:checked) { background: #fdecea; color: var(--danger); }

/* 表单里的字段标题另起一行（仅新增学员页） */
#formNew label:not(.pick) { display: block; margin: 12px 0 5px; }
#formNew label:not(.pick) + input,
#formNew label:not(.pick) + select { display: block; width: 100%; }

/* 勋章闪现（每式完成 / 全部完成） */
.badge-flash {
  position: absolute; inset: 0; z-index: 25;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: rgba(46,107,79,.78); color: #fff; border-radius: 8px;
  animation: badgeIn .28s ease-out;
  pointer-events: none;
}
.badge-flash .ic { font-size: 54px; }
.badge-flash div:last-child { font-size: 17px; margin-top: 6px; }
@keyframes badgeIn { from { opacity: 0; transform: scale(.88); } to { opacity: 1; transform: scale(1); } }

.alert-box { border-radius: 6px; padding: 12px 16px; margin-bottom: 14px; font-size: 15px; }
.alert-box.info { background: var(--brand-light); border-left: 4px solid var(--brand); }
.alert-box.warn { background: #fdf3e0; border-left: 4px solid var(--warn); }
.alert-box.danger { background: #fdecea; border-left: 4px solid var(--danger); }

.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 12px; font-size: 15px; }
.kv .k { color: var(--muted); }

.empty { padding: 30px; text-align: center; color: var(--muted); }

/* ---------------------------------------------------------- 统计块 */
.stat { display: flex; gap: 14px; flex-wrap: wrap; }
.stat .item {
  flex: 1; min-width: 130px; background: #fff; border: 1px solid var(--line);
  border-radius: 8px; padding: 14px 16px;
}
.stat .item .n { font-size: 28px; font-weight: 700; color: var(--brand); }
.stat .item .l { font-size: 14px; color: var(--muted); }

/* ---------------------------------------------------------- 学员端（竖屏模拟） */
.phone-wrap {
  background: #2b2f2c; min-height: 100vh; padding: 18px 0;
  display: flex; justify-content: center;
}
.phone {
  width: 390px; background: #fff; border-radius: 26px; overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,.35); display: flex; flex-direction: column;
  min-height: 780px; position: relative;
}
.phone .status-bar {
  background: var(--brand); color: #fff; padding: 8px 16px;
  display: flex; justify-content: space-between; font-size: 13px; align-items: center;
}
.phone .content { flex: 1; overflow-y: auto; padding: 14px; }
.phone .tabbar {
  display: flex; border-top: 1px solid var(--line); background: #fbfbf9;
}
.phone .tabbar a {
  flex: 1; text-align: center; padding: 9px 0; font-size: 13px; color: var(--muted);
}
.phone .tabbar a.on { color: var(--brand); font-weight: 700; }
.phone .tabbar a:hover { text-decoration: none; }

.phone h2 { font-size: 18px; margin: 0 0 10px; }
.phone .big-btn {
  display: block; width: 100%; text-align: center; background: var(--brand);
  color: #fff; border-radius: 10px; padding: 16px; font-size: 20px; font-weight: 700;
}
.phone .big-btn:hover { text-decoration: none; background: var(--brand-dark); }

.pcard { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin-bottom: 12px; }
.pcard .t { font-size: 16px; font-weight: 700; }
.pcard .d { font-size: 14px; color: var(--muted); }

.art-item { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.art-item .thumb {
  width: 74px; height: 56px; background: var(--brand-light); border-radius: 6px;
  display: flex; align-items: center; justify-content: center; color: var(--brand);
  font-size: 13px; flex-shrink: 0; overflow: hidden;
}
.art-item .thumb img { width: 100%; height: 100%; object-fit: cover; }

/* 练习页 */
.practice-top { flex: 1; display: flex; flex-direction: column; }
.vscreen {
  width: 100%; aspect-ratio: 768 / 720; background: #000; position: relative;
}
.vscreen video { width: 100%; height: 100%; object-fit: contain; display: block; }
.vscreen.mirror video { transform: scaleX(-1); }
.vlabel {
  position: absolute; left: 8px; top: 8px; background: rgba(0,0,0,.55); color: #fff;
  padding: 3px 10px; border-radius: 4px; font-size: 14px;
}
.vround {
  position: absolute; right: 8px; top: 8px; background: rgba(0,0,0,.55); color: #fff;
  padding: 3px 10px; border-radius: 4px; font-size: 14px;
}
.screen-bottom {
  border-top: 2px solid var(--brand); background: #111; position: relative;
  min-height: 180px;
}
.screen-bottom video, .screen-bottom .cam { width: 100%; display: block; }
.cam {
  aspect-ratio: 4 / 3; background: #1c1c1c; color: #8a8a8a;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.cam video { width: 100%; height: 100%; object-fit: cover; }

.hud { padding: 10px 12px; background: #fff; }
.hud .hr { font-size: 34px; font-weight: 700; color: var(--danger); font-variant-numeric: tabular-nums; }
.hud .hr small { font-size: 14px; color: var(--muted); font-weight: 400; }
.hud .row { gap: 8px; }

.banner { padding: 10px 12px; font-size: 16px; font-weight: 700; text-align: center; }
.banner.notice { background: #fdf3e0; color: #8a5a00; }
.banner.strong { background: #fde2cf; color: #a04000; }
.banner.alarm { background: var(--danger); color: #fff; }

.rpe-mask {
  position: absolute; inset: 0; background: rgba(0,0,0,.72); z-index: 20;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #fff; padding: 20px; text-align: center;
}
.rpe-mask .q { font-size: 20px; margin-bottom: 16px; }
.rpe-mask .opts { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; width: 100%; }
.rpe-mask .opts button {
  background: #fff; color: var(--brand); border: none; border-radius: 8px; padding: 12px 0;
  font-size: 15px; font-weight: 700;
}
.rpe-mask .opts button:hover { background: var(--brand-light); }

/* 富文本编辑器 */
.editor {
  border: 1px solid var(--line); border-radius: 5px; min-height: 260px;
  padding: 12px; background: #fff; font-size: 15px;
}
.editor img { max-width: 100%; border-radius: 6px; }
.editor video { max-width: 100%; border-radius: 6px; }
.editor:empty:before { content: attr(data-placeholder); color: #aaa; }

.toolbar { display: flex; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }

/* ---------- 登录页 / 账号页（2026-10-30 增加登录） ---------- */
.login-card {
  max-width: 420px; margin: 8vh auto 0; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; padding: 26px 28px 20px; box-shadow: 0 6px 28px rgba(20, 40, 30, .07);
}
.login-card h1 { margin-bottom: 6px; }
.login-card input { width: 100%; box-sizing: border-box; margin-bottom: 6px; }
table.kv th { width: 120px; background: #f7f9f8; color: #444; font-weight: 600; }

/* 顶栏右侧：返回首页 / 当前用户 */
.topbar .home-btn { margin-left: 6px; background: rgba(255,255,255,.14); border-color: transparent;
  color: #fff; }
.topbar .home-btn:hover { background: rgba(255,255,255,.26); color: #fff; }
.userbox { display: flex; align-items: center; gap: 8px; margin-left: 10px; }
.userbox .who { color: #eaf3ee; font-size: 14px; line-height: 1.25; }
.userbox .who em { display: block; font-style: normal; font-size: 12px; color: #a9c6b7; }
.userbox .btn { background: rgba(255,255,255,.14); border-color: transparent; color: #fff; }
.userbox .btn:hover { background: rgba(255,255,255,.26); color: #fff; }

/* ---------- 管理端：左侧菜单 + 可关闭页签 ---------- */
.adm { display: flex; height: 100vh; overflow: hidden; }
.adm-side {
  width: 208px; flex: 0 0 208px; background: #1f3a2e; color: #d7e6de;
  display: flex; flex-direction: column; overflow-y: auto;
}
.adm-side .brand { padding: 16px 16px 12px; font-weight: 700; color: #fff; font-size: 15px;
  border-bottom: 1px solid rgba(255,255,255,.12); }
.adm-side .brand small { display: block; font-weight: 400; color: #93b3a5; font-size: 12px; margin-top: 3px; }
.adm-side a.menu {
  display: block; padding: 10px 16px; color: #cfe0d7; font-size: 14px; border-left: 3px solid transparent;
}
.adm-side a.menu:hover { background: rgba(255,255,255,.07); color: #fff; text-decoration: none; }
.adm-side a.menu.on { background: rgba(255,255,255,.12); color: #fff; border-left-color: #7fd3a5; }
.adm-side .grp { padding: 14px 16px 6px; font-size: 12px; color: #7e9c8d; letter-spacing: .5px; }
.adm-side .foot { margin-top: auto; padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.12);
  display: flex; gap: 8px; flex-wrap: wrap; }
.adm-side .foot .btn { background: rgba(255,255,255,.12); border-color: transparent; color: #fff; }

.adm-main { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--page); }
.adm-tabs { display: flex; align-items: center; gap: 4px; background: #fff; border-bottom: 1px solid var(--line);
  padding: 0 10px; min-height: 44px; overflow-x: auto; }
.adm-tabs .tab {
  display: flex; align-items: center; gap: 8px; padding: 9px 12px; font-size: 14px; color: #555;
  border: 1px solid transparent; border-bottom: none; border-radius: 6px 6px 0 0; cursor: pointer;
  white-space: nowrap;
}
.adm-tabs .tab:hover { background: #f2f6f3; }
.adm-tabs .tab.on { background: var(--brand-light); color: var(--brand-dark); border-color: var(--line); }
.adm-tabs .tab .x { color: #999; font-size: 15px; line-height: 1; padding: 0 2px; border-radius: 3px; }
.adm-tabs .tab .x:hover { background: #e6c7c2; color: var(--danger); }
.adm-tabs .empty-hint { color: var(--muted); font-size: 13px; padding-left: 6px; }
.adm-panes { flex: 1; position: relative; min-height: 0; }
.adm-panes iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: none; }
.adm-panes iframe.on { display: block; }
.adm-welcome { padding: 40px; color: var(--muted); }
.adm-welcome h2 { border: none; padding: 0; color: #33513f; }

/* 管理端子页面（iframe 内）不需要再显示顶栏，留一个轻量头部 */
.pane-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.pane-head h1 { margin: 0; }
.pane-body { padding: 18px 20px 40px; }

/* ---------- 学员端顶部操作条 ---------- */
.app-nav { display: flex; align-items: center; gap: 6px; padding: 6px 12px;
  border-bottom: 1px solid var(--line); background: #fff; }
.app-nav .btn { font-size: 12px; padding: 3px 8px; }

/* ---------- 提示条：成功态 ---------- */
.alert-box.ok { background: #e7f4ec; border-left: 4px solid var(--ok); color: #235c3c; }
.alert-box.warn { background: #fdf3e0; border-left: 4px solid var(--warn); color: #7a4a09; }
.alert-box.info { background: #eef4f0; border-left: 4px solid var(--brand); color: #2b4a3a; }
.alert-box.danger { background: #fdecea; border-left: 4px solid var(--danger); color: #7d2018; }