/* ============================================================
   组件层：按钮 / 卡片 / 表格 / 进度 / 表单 / 状态 / 三端骨架
   ============================================================ */

/* ——— 按钮 ——— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 40px; padding: 8px 18px; border-radius: var(--r-sm);
  font-size: var(--fs-base); font-weight: 600; white-space: nowrap;
  border: 1px solid transparent; transition: all var(--dur-fast) ease-out;
}
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--c-accent); color: #fff; box-shadow: var(--sh-1); }
.btn-primary:hover:not(:disabled) { background: var(--c-accent-hover); box-shadow: var(--sh-2); transform: translateY(-1px); }
.btn-blue { background: var(--c-blue); color: #fff; }
.btn-blue:hover:not(:disabled) { background: var(--c-blue-deep); box-shadow: var(--sh-2); }
.btn-outline { border-color: var(--c-line-2); color: var(--c-text-2); background: var(--c-surface); }
.btn-outline:hover:not(:disabled) { border-color: var(--c-blue); color: var(--c-blue); background: var(--c-blue-soft); }
.btn-ghost { color: var(--c-text-2); }
.btn-ghost:hover:not(:disabled) { background: var(--c-surface-3); color: var(--c-ink); }
.btn-inv { border-color: rgba(255,255,255,.4); color: #fff; }
.btn-inv:hover { background: rgba(255,255,255,.14); }
.btn-sm { min-height: 32px; padding: 5px 12px; font-size: var(--fs-sm); }
.btn-lg { min-height: 48px; padding: 12px 28px; font-size: var(--fs-md); }
.btn-block { width: 100%; }
.link { color: var(--c-blue); font-weight: 600; cursor: pointer; }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ——— 卡片 ——— */
.card {
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--r-md); box-shadow: var(--sh-1); position: relative;
}
.card-pad { padding: var(--sp-5); }
.card-head {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--c-line);
}
.card-head h3 { font-size: var(--fs-md); font-weight: 700; letter-spacing: -.01em; }
.card-body { padding: var(--sp-5); }
.card-flat { box-shadow: none; }
.card-hover { transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: var(--c-blue-line); }

/* ——— 徽章 / 状态 ——— */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: var(--r-xs);
  font-size: 11px; font-weight: 700; line-height: 20px; white-space: nowrap;
  border: 1px solid transparent;
}
.badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.badge-ok { background: var(--c-ok-soft); color: var(--c-ok); border-color: rgba(11,125,87,.18); }
.badge-warn { background: var(--c-warn-soft); color: var(--c-warn); border-color: rgba(169,106,6,.18); }
.badge-danger { background: var(--c-danger-soft); color: var(--c-danger); border-color: rgba(186,58,44,.18); }
.badge-info { background: var(--c-info-soft); color: var(--c-info); border-color: rgba(27,110,168,.18); }
.badge-blue { background: var(--c-blue-soft); color: var(--c-blue-deep); border-color: var(--c-blue-line); }
.badge-neutral { background: var(--c-surface-3); color: var(--c-text-2); border-color: var(--c-line); }
.tag {
  display: inline-block; padding: 3px 9px; font-size: 11px; font-weight: 600;
  background: var(--c-surface-3); color: var(--c-text-2); border-radius: var(--r-xs);
  border: 1px solid var(--c-line);
}
.tag-blue { background: var(--c-blue-soft); color: var(--c-blue-deep); border-color: var(--c-blue-line); }
.tag-accent { background: var(--c-accent-soft); color: var(--c-accent); border-color: rgba(234,100,18,.22); }

/* ——— 进度：工程刻度 ——— */
.progress { display: flex; align-items: center; gap: var(--sp-3); }
.progress-track {
  flex: 1; height: 10px; position: relative; overflow: hidden;
  background: var(--c-surface-3); border: 1px solid var(--c-line); border-radius: 1px;
}
.progress-track::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(90deg, transparent 0 9px, rgba(12,27,41,.14) 9px 10px);
}
.progress-fill {
  position: absolute; left: 0; top: 0; bottom: 0; width: 0;
  background: linear-gradient(90deg, var(--c-blue-deep), var(--c-blue-mid));
  transition: width 1s var(--ease-out);
}
.progress-fill.warn { background: linear-gradient(90deg, #B9760B, #E0A128); }
.progress-fill.done { background: linear-gradient(90deg, #0B7D57, #20A878); }
.progress-val { font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 700; min-width: 46px; text-align: right; }
.progress-lg .progress-track { height: 14px; }
.progress-lg .progress-val { font-size: var(--fs-2xl); }

/* ——— 表单 ——— */
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: var(--fs-sm); font-weight: 600; color: var(--c-text-2); }
.field .hint { font-size: 11px; color: var(--c-muted); }
.input, .select, .textarea {
  width: 100%; min-height: 42px; padding: 9px 12px;
  background: var(--c-surface); border: 1px solid var(--c-line-2); border-radius: var(--r-sm);
  font-size: var(--fs-base); transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.input:hover, .select:hover { border-color: var(--c-muted-2); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--c-blue); box-shadow: 0 0 0 3px rgba(11,99,197,.12);
}
.input::placeholder { color: var(--c-muted-2); }
.textarea { min-height: 92px; resize: vertical; }
.input-err { border-color: var(--c-danger); }
.err-text { font-size: 11px; color: var(--c-danger); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4); }
.checkline { display: flex; align-items: flex-start; gap: 9px; font-size: var(--fs-sm); color: var(--c-text-2); cursor: pointer; }
.checkline input { width: 16px; height: 16px; margin-top: 3px; accent-color: var(--c-blue); }
.search { position: relative; }
.search .input { padding-left: 36px; }
.search::before {
  content: ""; position: absolute; left: 13px; top: 15px; width: 10px; height: 10px;
  border: 2px solid var(--c-muted); border-radius: 50%;
}
.search::after {
  content: ""; position: absolute; left: 24px; top: 25px; width: 7px; height: 2px;
  background: var(--c-muted); transform: rotate(45deg);
}
.chip {
  padding: 6px 14px; min-height: 32px; border-radius: var(--r-sm);
  border: 1px solid var(--c-line); background: var(--c-surface);
  font-size: var(--fs-sm); color: var(--c-text-2); transition: all var(--dur-fast) ease-out;
}
.chip:hover { border-color: var(--c-blue); color: var(--c-blue); }
.chip[aria-pressed="true"] { background: var(--c-blue); color: #fff; border-color: var(--c-blue); font-weight: 600; }
.filter-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2); }
.filter-row .fl-label { font-size: var(--fs-sm); font-weight: 700; color: var(--c-text-2); min-width: 52px; }

/* ——— 标签页 ——— */
.tabs { display: flex; gap: var(--sp-5); border-bottom: 1px solid var(--c-line); }
.tabs button {
  position: relative; padding: 10px 2px 12px; font-size: var(--fs-base); font-weight: 600;
  color: var(--c-muted); transition: color var(--dur-fast);
}
.tabs button:hover { color: var(--c-blue); }
.tabs button[aria-selected="true"] { color: var(--c-blue-deep); }
.tabs button[aria-selected="true"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; background: var(--c-accent);
}

/* ——— 表格 ——— */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-line); border-radius: var(--r-md); background: var(--c-surface); }
.tbl { min-width: 720px; font-size: var(--fs-sm); }
.tbl thead th {
  background: var(--c-surface-2); text-align: left; font-weight: 700; color: var(--c-text-2);
  padding: 12px var(--sp-4); border-bottom: 1px solid var(--c-line); white-space: nowrap;
  font-size: 11px; letter-spacing: .06em;
}
.tbl tbody td { padding: 13px var(--sp-4); border-bottom: 1px solid var(--c-line); vertical-align: middle; }
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl tbody tr { transition: background var(--dur-fast); }
.tbl tbody tr:hover { background: var(--c-blue-soft); }
.tbl .t-right { text-align: right; }
.tbl .t-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.tbl-actions { display: flex; gap: var(--sp-2); white-space: nowrap; }
.tbl-actions .link { font-size: var(--fs-sm); }
.pager { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); padding: var(--sp-4); font-size: var(--fs-sm); color: var(--c-muted); }
.pager-btns { display: flex; gap: 4px; }
.pager-btns button {
  min-width: 32px; height: 32px; padding: 0 8px; border: 1px solid var(--c-line);
  border-radius: var(--r-sm); font-size: var(--fs-sm); background: var(--c-surface);
}
.pager-btns button[aria-current="page"] { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }

/* ——— KPI / 数据 ——— */
.kpi {
  background: var(--c-surface); border: 1px solid var(--c-line); border-top: 3px solid var(--c-blue);
  padding: var(--sp-4) var(--sp-5); position: relative; overflow: hidden;
}
.kpi::after {
  content: ""; position: absolute; right: -14px; bottom: -22px; width: 84px; height: 84px;
  border: 1px solid var(--c-blue-line); border-radius: 50%;
}
.kpi .k-label { font-size: var(--fs-sm); color: var(--c-muted); font-weight: 600; }
.kpi .k-val { font-family: var(--font-display); font-size: 2.9rem; font-weight: 700; line-height: 1.05; letter-spacing: -.03em; color: var(--c-ink); margin: 6px 0 2px; }
.kpi .k-val small { font-size: .9rem; font-family: var(--font-body); font-weight: 600; margin-left: 4px; color: var(--c-muted); }
.kpi .k-delta { font-size: 11px; font-weight: 700; }
.kpi.k-accent { border-top-color: var(--c-accent); }
.kpi.k-ok { border-top-color: var(--c-ok); }
.kpi.k-warn { border-top-color: var(--c-warn); }
.delta-up { color: var(--c-ok); }
.delta-down { color: var(--c-danger); }

/* ——— 图表（纯 CSS / 内联 SVG，无外部库）——— */
.chart-bars { display: flex; align-items: flex-end; gap: 10px; height: 190px; padding-top: var(--sp-4); border-bottom: 1px solid var(--c-line); }
.chart-bars .cb { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; justify-content: flex-end; }
.chart-bars .cb .bar {
  width: 100%; max-width: 42px; background: linear-gradient(180deg, var(--c-blue-mid), var(--c-blue-deep));
  border-radius: 2px 2px 0 0; transition: height 900ms var(--ease-out);
}
.chart-bars .cb.hi .bar { background: linear-gradient(180deg, var(--c-accent), #B94B08); }
.chart-bars .cb span { font-family: var(--font-mono); font-size: 10px; color: var(--c-muted); }
.chart-legend { display: flex; gap: var(--sp-5); font-size: 11px; color: var(--c-muted); margin-top: var(--sp-3); }
.chart-legend i { display: inline-block; width: 10px; height: 10px; margin-right: 5px; border-radius: 2px; }

/* ——— 抽屉 / 弹窗 / Toast ——— */
.overlay { position: fixed; inset: 0; background: rgba(8, 22, 36, .48); z-index: 90; opacity: 0; pointer-events: none; transition: opacity var(--dur-base); }
.overlay.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(460px, 100%);
  background: var(--c-surface); z-index: 95; box-shadow: var(--sh-3);
  transform: translateX(102%); transition: transform var(--dur-base) var(--ease-out);
  display: flex; flex-direction: column;
}
.drawer.open { transform: none; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: var(--sp-5); border-bottom: 1px solid var(--c-line); }
.drawer-head h3 { font-size: var(--fs-lg); font-weight: 700; }
.drawer-body { padding: var(--sp-5); overflow-y: auto; flex: 1; }
.drawer-foot { padding: var(--sp-4) var(--sp-5); border-top: 1px solid var(--c-line); display: flex; justify-content: flex-end; gap: var(--sp-3); }
.icon-btn { width: 36px; height: 36px; display: grid; place-items: center; border-radius: var(--r-sm); color: var(--c-muted); font-size: 20px; }
.icon-btn:hover { background: var(--c-surface-3); color: var(--c-ink); }
.modal {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%, -46%) scale(.97);
  width: min(480px, calc(100% - 32px)); background: var(--c-surface); z-index: 95;
  border-radius: var(--r-md); box-shadow: var(--sh-3); opacity: 0; pointer-events: none;
  transition: all var(--dur-base) var(--ease-out);
}
.modal.open { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%) scale(1); }
.modal-head { padding: var(--sp-5) var(--sp-5) var(--sp-3); font-size: var(--fs-lg); font-weight: 700; }
.modal-body { padding: 0 var(--sp-5) var(--sp-4); color: var(--c-text-2); font-size: var(--fs-base); }
.modal-foot { padding: var(--sp-4) var(--sp-5); border-top: 1px solid var(--c-line); display: flex; justify-content: flex-end; gap: var(--sp-3); }
.toast-stack { position: fixed; top: 76px; right: 20px; z-index: 120; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast {
  background: var(--c-ink); color: #fff; padding: 11px 16px; border-radius: var(--r-sm);
  box-shadow: var(--sh-2); font-size: var(--fs-sm); font-weight: 600;
  border-left: 3px solid var(--c-accent); animation: toastIn var(--dur-base) var(--ease-out);
  max-width: 340px;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }
.empty { padding: var(--sp-8) var(--sp-4); text-align: center; color: var(--c-muted); }
.empty .e-mark { font-family: var(--font-display); font-size: 3rem; color: var(--c-line-2); line-height: 1; }

/* ——— 电脑端 · 学员站头 ——— */
.site-header {
  background: var(--c-surface); border-bottom: 1px solid var(--c-line);
  position: relative; z-index: 20;
}
.site-header .sh-top {
  height: 68px; display: flex; align-items: center; gap: var(--sp-6);
  padding: 0 var(--gutter); width: var(--content-w); margin: 0 auto;
}
.site-header .sh-logo { display: flex; align-items: center; gap: 10px; }
.site-header .sh-logo img { height: 38px; }
.site-header .sh-logo b { font-size: var(--fs-lg); letter-spacing: .02em; }
.site-header .sh-logo span { display: block; font-family: var(--font-mono); font-size: 9px; letter-spacing: .2em; color: var(--c-muted); }
.site-nav { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; }
.site-nav a {
  padding: 8px 14px; font-size: var(--fs-base); font-weight: 600; color: var(--c-text-2);
  border-radius: var(--r-sm); transition: all var(--dur-fast);
}
.site-nav a:hover { background: var(--c-surface-3); color: var(--c-blue); }
.site-nav a.on { color: var(--c-blue-deep); background: var(--c-blue-soft); }
.site-user { display: flex; align-items: center; gap: 10px; padding-left: var(--sp-4); border-left: 1px solid var(--c-line); }
.avatar {
  width: 34px; height: 34px; display: grid; place-items: center; flex: none;
  background: var(--c-blue); color: #fff; border-radius: 50%; font-size: var(--fs-sm); font-weight: 700;
}
.avatar.ghost { background: var(--c-blue-soft); color: var(--c-blue-deep); }
.site-footer { border-top: 1px solid var(--c-line); background: var(--c-surface-2); padding: var(--sp-5) var(--gutter); }
.site-footer .sf-in { width: var(--content-w); margin: 0 auto; display: flex; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; font-size: 11px; color: var(--c-muted); }

/* ——— 登录页 ——— */
.login-view { min-height: calc(100vh - var(--topbar-h) - var(--subnav-h)); display: grid; grid-template-columns: 1.05fr .95fr; }
.login-art {
  position: relative; overflow: hidden; background: var(--c-sidebar); color: #fff;
  padding: clamp(28px, 5vw, 76px); display: flex; flex-direction: column; justify-content: space-between;
}
.login-art::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 40px 40px;
}
.login-art::after {
  content: ""; position: absolute; width: 520px; height: 520px; right: -170px; bottom: -220px;
  border: 1px solid rgba(255,255,255,.16); border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(255,255,255,.025), 0 0 0 120px rgba(255,255,255,.02);
}
.login-art > * { position: relative; z-index: 2; }
.login-art .la-logo { display: flex; align-items: center; gap: 14px; }
.login-art .la-logo img { height: 46px; }
.login-art h1 { font-size: clamp(2rem, 3.2vw, 3rem); font-family: var(--font-display); font-weight: 700; line-height: 1.02; letter-spacing: -.03em; margin: var(--sp-6) 0 var(--sp-4); }
.login-art h1 em { font-style: normal; color: #FF9A4D; }
.login-art p { max-width: 30ch; color: var(--c-text-inv-2); font-size: var(--fs-md); line-height: 1.9; }
.login-art .la-meta { display: flex; gap: var(--sp-6); font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--c-text-inv-2); }
.login-art .la-meta b { display: block; font-family: var(--font-display); font-size: 1.9rem; color: #fff; letter-spacing: 0; }
.login-panel { display: grid; place-items: center; padding: var(--sp-6) var(--gutter); }
.login-box { width: min(420px, 100%); }
.login-box .tabs { margin-bottom: var(--sp-5); }
.login-box .tabs button { flex: 1; text-align: center; }
.login-box .lb-title { font-size: var(--fs-2xl); font-weight: 700; letter-spacing: -.03em; margin-bottom: 6px; }
.login-box .lb-sub { color: var(--c-muted); font-size: var(--fs-sm); margin-bottom: var(--sp-6); }
.login-box .btn-block { margin-top: var(--sp-5); }
.login-alt { display: flex; align-items: center; gap: var(--sp-3); margin-top: var(--sp-5); color: var(--c-muted); font-size: 11px; }
.login-alt::before, .login-alt::after { content: ""; flex: 1; height: 1px; background: var(--c-line); }
.wx-btn { width: 100%; margin-top: var(--sp-4); border: 1px solid var(--c-line-2); }

/* ——— 课程卡 ——— */
.course-card { display: grid; grid-template-columns: 108px minmax(0, 1fr); min-height: 158px; overflow: hidden; }
.course-card .cc-cover {
  background: var(--c-sidebar); position: relative; display: grid; place-items: center; overflow: hidden;
}
.course-card .cc-cover::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 14px 14px;
}
.course-card .cc-cover .cc-year { font-family: var(--font-display); font-size: 2.5rem; color: #fff; font-weight: 700; z-index: 1; line-height: 1; }
.course-card .cc-cover .cc-type {
  position: absolute; bottom: 8px; left: 8px; z-index: 1; font-family: var(--font-mono);
  font-size: 9px; letter-spacing: .12em; color: #FF9A4D; border: 1px solid rgba(255,154,77,.5); padding: 2px 5px;
}
.course-card .cc-body { padding: var(--sp-4) var(--sp-5); display: flex; flex-direction: column; gap: 8px; }
.course-card h3 { font-size: var(--fs-md); font-weight: 700; line-height: 1.5; }
.course-card .cc-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; font-size: 11px; color: var(--c-muted); }
.course-card .cc-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-3); margin-top: auto; }
.price { font-family: var(--font-display); font-size: var(--fs-2xl); font-weight: 700; color: var(--c-accent); line-height: 1; }
.price small { font-family: var(--font-body); font-size: 11px; font-weight: 600; color: var(--c-muted); margin-left: 3px; }

/* ——— 播放器 ——— */
.player {
  aspect-ratio: 16 / 9; background: radial-gradient(120% 100% at 30% 0%, #16436E, #081A2C 70%);
  position: relative; overflow: hidden; display: grid; place-items: center; color: #fff;
}
.player::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 28px 28px;
}
.player .pl-badge { position: absolute; top: 16px; left: 16px; font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: #FF9A4D; border: 1px solid rgba(255,154,77,.5); padding: 4px 8px; }
.player .pl-time { position: absolute; bottom: 14px; right: 16px; font-family: var(--font-mono); font-size: 11px; color: #C6D8EA; }
.player .pl-play {
  width: 78px; height: 78px; border-radius: 50%; background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.5); display: grid; place-items: center; z-index: 2;
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-base);
}
.player .pl-play:hover { transform: scale(1.08); background: var(--c-accent); border-color: var(--c-accent); }
.player .pl-play::after { content: ""; margin-left: 5px; border-left: 22px solid #fff; border-top: 13px solid transparent; border-bottom: 13px solid transparent; }
.player.playing .pl-play::after { border: 0; width: 20px; height: 24px; border-left: 6px solid #fff; border-right: 6px solid #fff; margin-left: 0; }
.player .pl-title { position: absolute; left: 18px; bottom: 16px; z-index: 2; font-size: var(--fs-md); font-weight: 700; max-width: 60%; }
.player-bar { height: 5px; background: var(--c-surface-3); position: relative; }
.player-bar i { display: block; height: 100%; background: var(--c-accent); width: 42%; }
.lesson-item {
  display: flex; align-items: center; gap: var(--sp-3); padding: 12px var(--sp-4);
  border-bottom: 1px solid var(--c-line); cursor: pointer; transition: background var(--dur-fast);
}
.lesson-item:last-child { border-bottom: 0; }
.lesson-item:hover { background: var(--c-surface-2); }
.lesson-item.active { background: var(--c-blue-soft); box-shadow: inset 3px 0 0 var(--c-blue); }
.lesson-item .li-no { font-family: var(--font-mono); font-size: 11px; color: var(--c-muted); min-width: 26px; }
.lesson-item .li-name { flex: 1; font-size: var(--fs-sm); font-weight: 600; line-height: 1.5; }
.lesson-item .li-len { font-family: var(--font-mono); font-size: 11px; color: var(--c-muted); }

/* ——— 考试 ——— */
.exam-timer {
  display: flex; align-items: baseline; gap: 8px; padding: 10px 18px;
  background: var(--c-sidebar); color: #fff; border-radius: var(--r-sm);
}
.exam-timer .et { font-family: var(--font-display); font-size: 2rem; font-weight: 700; letter-spacing: .02em; }
.exam-q { font-size: var(--fs-lg); font-weight: 700; line-height: 1.7; margin-bottom: var(--sp-5); }
.opt {
  display: flex; gap: var(--sp-3); align-items: flex-start; padding: 14px var(--sp-4);
  border: 1px solid var(--c-line); border-radius: var(--r-sm); background: var(--c-surface);
  cursor: pointer; margin-bottom: 10px; transition: all var(--dur-fast) ease-out;
}
.opt:hover { border-color: var(--c-blue); background: var(--c-blue-soft); }
.opt.sel { border-color: var(--c-blue); background: var(--c-blue-soft); box-shadow: inset 3px 0 0 var(--c-blue); }
.opt .o-key {
  width: 26px; height: 26px; flex: none; display: grid; place-items: center;
  border: 1px solid var(--c-line-2); border-radius: 50%; font-family: var(--font-mono); font-size: 12px; font-weight: 700;
}
.opt.sel .o-key { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.sheet-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.sheet-grid button {
  aspect-ratio: 1; border: 1px solid var(--c-line-2); border-radius: var(--r-sm);
  font-family: var(--font-mono); font-size: var(--fs-sm); background: var(--c-surface);
}
.sheet-grid button.done { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.sheet-grid button.cur { outline: 2px solid var(--c-accent); outline-offset: 1px; }

/* ——— 证书 ——— */
.cert-paper {
  background: #FFFDF7; border: 1px solid var(--c-line-2); padding: clamp(24px, 4vw, 48px);
  position: relative; box-shadow: var(--sh-2); aspect-ratio: 1.414 / 1;
  display: flex; flex-direction: column; justify-content: space-between; overflow: hidden;
}
.cert-paper::before { content: ""; position: absolute; inset: 12px; border: 1px solid rgba(11,99,197,.35); pointer-events: none; }
.cert-paper::after {
  content: ""; position: absolute; inset: 18px; border: 4px double rgba(11,99,197,.16); pointer-events: none;
}
.cert-paper .cp-watermark {
  position: absolute; right: -20px; bottom: -60px; width: 300px; opacity: .05; pointer-events: none;
}
.cert-paper h3 { text-align: center; font-size: clamp(1.4rem, 2.6vw, 2.2rem); letter-spacing: .3em; font-weight: 700; color: var(--c-blue-deep); }
.cert-paper .cp-body { text-align: center; line-height: 2.2; font-size: var(--fs-base); position: relative; z-index: 1; }
.cert-paper .cp-body b { font-size: var(--fs-xl); border-bottom: 1px solid var(--c-ink); padding: 0 18px 4px; }
.cert-paper .cp-foot { display: flex; justify-content: space-between; align-items: flex-end; font-size: 11px; color: var(--c-text-2); position: relative; z-index: 1; }
.cert-seal {
  width: 84px; height: 84px; border: 3px solid rgba(186,58,44,.65); border-radius: 50%;
  display: grid; place-items: center; color: rgba(186,58,44,.75); font-size: 11px; font-weight: 700;
  text-align: center; line-height: 1.4; transform: rotate(-14deg);
}

/* ——— 后台管理骨架 ——— */
.admin-layout { display: grid; grid-template-columns: var(--rail-w) minmax(0, 1fr); min-height: calc(100vh - var(--topbar-h) - var(--subnav-h)); }
.admin-rail { background: var(--c-sidebar); color: var(--c-text-inv-2); padding-bottom: var(--sp-7); }
.admin-rail .ar-brand { height: 68px; display: flex; align-items: center; gap: 10px; padding: 0 var(--sp-5); border-bottom: 1px solid var(--c-sidebar-line); }
.admin-rail .ar-brand img { height: 26px; }
.admin-rail .ar-brand b { display: block; color: #fff; font-size: 12px; letter-spacing: .04em; white-space: nowrap; line-height: 1.3; }
.admin-rail .ar-brand span { display: block; font-family: var(--font-mono); font-size: 9px; letter-spacing: .16em; color: #6C8BA8; margin-top: 2px; }
.admin-rail .ar-group { padding: var(--sp-5) var(--sp-5) var(--sp-2); font-family: var(--font-mono); font-size: 9px; letter-spacing: .18em; color: #6C8BA8; text-transform: uppercase; }
.admin-rail a {
  display: flex; align-items: center; gap: 11px; min-height: 42px; padding: 0 var(--sp-5);
  font-size: var(--fs-sm); color: var(--c-text-inv-2); border-left: 3px solid transparent;
  transition: all var(--dur-fast) ease-out; cursor: pointer;
}
.admin-rail a:hover { background: rgba(255,255,255,.06); color: #fff; }
.admin-rail a.on { background: var(--c-sidebar-2); color: #fff; border-left-color: var(--c-accent); font-weight: 700; }
.admin-rail a i { width: 18px; text-align: center; font-style: normal; font-family: var(--font-mono); font-size: 11px; opacity: .8; }
.admin-rail .ar-foot { margin: var(--sp-6) var(--sp-5) 0; padding-top: var(--sp-4); border-top: 1px solid var(--c-sidebar-line); font-size: 10px; font-family: var(--font-mono); color: #6C8BA8; line-height: 1.9; }
.admin-main { min-width: 0; background: var(--c-paper); }
.admin-bar {
  height: 68px; display: flex; align-items: center; gap: var(--sp-4);
  padding: 0 var(--gutter); background: var(--c-surface); border-bottom: 1px solid var(--c-line);
}
.admin-bar .ab-crumb { font-size: var(--fs-sm); color: var(--c-muted); }
.admin-bar .ab-crumb b { color: var(--c-ink); font-weight: 700; }
.admin-bar .ab-right { margin-left: auto; display: flex; align-items: center; gap: var(--sp-3); }
.admin-content { width: var(--content-w); padding: var(--sp-6) var(--gutter) var(--sp-9); }
/* 后台内容区默认铺满可用宽度，只在超宽屏居中封顶 —— 不设 1280 上限 */
.admin-page-title { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-4); margin-bottom: var(--sp-5); flex-wrap: wrap; }
.admin-page-title h1 { font-size: var(--fs-2xl); font-weight: 700; letter-spacing: -.03em; line-height: 1.2; }
.admin-page-title p { color: var(--c-muted); font-size: var(--fs-sm); margin-top: 4px; }
.admin-toolbar {
  display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap;
  padding: var(--sp-3) var(--sp-4); background: var(--c-surface);
  border: 1px solid var(--c-line); border-bottom: 0; border-radius: var(--r-md) var(--r-md) 0 0;
}
.admin-toolbar .search { width: min(280px, 100%); }
.stat-strip { display: flex; gap: 0; border: 1px solid var(--c-line); background: var(--c-surface); border-radius: var(--r-md); overflow: hidden; }
.stat-strip > div { flex: 1; padding: var(--sp-4) var(--sp-5); border-right: 1px solid var(--c-line); }
.stat-strip > div:last-child { border-right: 0; }
.stat-strip .ss-l { font-size: 11px; color: var(--c-muted); }
.stat-strip .ss-v { font-family: var(--font-display); font-size: var(--fs-3xl); font-weight: 700; line-height: 1.1; }

/* ——— 小程序端 · 手机外壳 ——— */
.mp-stage { padding: var(--sp-6) var(--gutter) var(--sp-9); }
.mp-intro { width: var(--content-w); margin: 0 auto var(--sp-6); display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; }
.mp-intro h1 { font-size: var(--fs-2xl); font-weight: 700; letter-spacing: -.04em; line-height: 1.1; }
.mp-intro p { color: var(--c-muted); max-width: 56ch; margin-top: 8px; font-size: var(--fs-sm); }
.mp-screens { display: flex; gap: var(--sp-6); overflow-x: auto; padding: 8px 0 var(--sp-6); align-items: flex-start; }
.mp-unit { flex: none; }
.mp-unit .mu-label { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; font-size: var(--fs-sm); font-weight: 700; }
.mp-unit .mu-label span { font-family: var(--font-mono); font-size: 10px; color: var(--c-muted); font-weight: 400; }
.phone {
  width: 320px; height: 674px; background: #fff; border: 8px solid #12263A;
  border-radius: 34px; box-shadow: var(--sh-3); overflow: hidden; position: relative;
  display: flex; flex-direction: column;
}
.phone-notch { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 100px; height: 20px; background: #12263A; border-radius: 0 0 12px 12px; z-index: 6; }
.phone-status { height: 28px; flex: none; display: flex; align-items: center; justify-content: space-between; padding: 4px 16px 0; font-family: var(--font-mono); font-size: 9px; font-weight: 700; background: #fff; color: var(--c-ink); }
.phone-nav {
  height: 42px; flex: none; display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-sm); font-weight: 700; border-bottom: 1px solid var(--c-line); background: #fff;
  position: relative;
}
.phone-nav .pn-back { position: absolute; left: 12px; font-size: 16px; color: var(--c-muted); }
.phone-scroll { flex: 1; overflow-y: auto; background: var(--c-paper); }
.phone-tabbar {
  height: 56px; flex: none; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--c-line); background: #fff;
}
.phone-tabbar div { display: grid; place-items: center; gap: 2px; font-size: 9px; color: var(--c-muted); cursor: pointer; }
.phone-tabbar div.on { color: var(--c-blue); font-weight: 700; }
.phone-tabbar div i { font-style: normal; font-size: 17px; line-height: 1; }
.mp-hero { background: linear-gradient(135deg, var(--c-blue-deep), var(--c-blue)); color: #fff; padding: 18px 16px 22px; position: relative; overflow: hidden; }
.mp-hero::after { content: ""; position: absolute; right: -40px; top: -40px; width: 140px; height: 140px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; }
.mp-hero h2 { font-size: var(--fs-lg); font-weight: 700; }
.mp-hero p { font-size: 10px; color: #C9DFF5; margin-top: 4px; }
.mp-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); padding: 13px; margin: 12px; box-shadow: var(--sh-1); }
.mp-card h3 { font-size: var(--fs-sm); font-weight: 700; margin-bottom: 9px; }
.mp-todo { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: -18px 12px 0; position: relative; z-index: 2; }
.mp-todo > div { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-md); padding: 11px 6px; text-align: center; box-shadow: var(--sh-1); }
.mp-todo b { display: block; font-family: var(--font-display); font-size: 1.6rem; line-height: 1; color: var(--c-blue-deep); }
.mp-todo span { font-size: 9px; color: var(--c-muted); }
.mp-row { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--c-line); }
.mp-row:last-child { border-bottom: 0; }
.mp-row .mr-no { width: 22px; height: 22px; flex: none; display: grid; place-items: center; border-radius: 50%; background: var(--c-blue-soft); color: var(--c-blue-deep); font-family: var(--font-mono); font-size: 10px; }
.mp-row .mr-t { flex: 1; font-size: 11px; font-weight: 600; line-height: 1.5; }
.mp-row .mr-s { font-family: var(--font-mono); font-size: 9px; color: var(--c-muted); }
.mp-video { aspect-ratio: 16/9; background: radial-gradient(120% 100% at 30% 0%, #16436E, #081A2C 70%); margin: 12px; border-radius: var(--r-md); display: grid; place-items: center; position: relative; }
.mp-video::after { content: "▶"; color: #fff; font-size: 26px; opacity: .9; }
.mp-video span { position: absolute; bottom: 8px; right: 10px; font-family: var(--font-mono); font-size: 9px; color: #C6D8EA; }
.mp-user { display: flex; align-items: center; gap: 12px; padding: 16px; background: linear-gradient(135deg, var(--c-blue-deep), var(--c-blue)); color: #fff; }
.mp-user .avatar { background: rgba(255,255,255,.2); width: 46px; height: 46px; font-size: var(--fs-md); }
.mp-list { background: #fff; margin: 12px; border-radius: var(--r-md); border: 1px solid var(--c-line); overflow: hidden; }
.mp-list > div { display: flex; align-items: center; gap: 10px; padding: 12px 13px; border-bottom: 1px solid var(--c-line); font-size: 11px; }
.mp-list > div:last-child { border-bottom: 0; }
.mp-list .ml-r { margin-left: auto; color: var(--c-muted); font-family: var(--font-mono); font-size: 9px; }
.mp-q { background: #fff; margin: 12px; border-radius: var(--r-md); border: 1px solid var(--c-line); padding: 14px; }
.mp-q h3 { font-size: 12px; line-height: 1.7; margin-bottom: 12px; }
.mp-opt { display: flex; gap: 8px; align-items: center; padding: 9px 10px; border: 1px solid var(--c-line); border-radius: var(--r-sm); margin-bottom: 8px; font-size: 11px; }
.mp-opt.on { border-color: var(--c-blue); background: var(--c-blue-soft); color: var(--c-blue-deep); font-weight: 700; }
.mp-opt b { width: 18px; height: 18px; flex: none; display: grid; place-items: center; border: 1px solid var(--c-line-2); border-radius: 50%; font-family: var(--font-mono); font-size: 9px; }
.mp-cert { margin: 12px; padding: 18px 14px; background: #FFFDF7; border: 1px solid var(--c-line-2); text-align: center; position: relative; }
.mp-cert::before { content: ""; position: absolute; inset: 6px; border: 1px solid rgba(11,99,197,.3); }
.mp-cert h3 { font-size: 13px; letter-spacing: .18em; color: var(--c-blue-deep); margin-bottom: 10px; }
.mp-cert p { font-size: 10px; line-height: 1.9; }

/* ——— 时间线 / 待办 ——— */
.timeline { position: relative; padding-left: 22px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 1px; background: var(--c-line-2); }
.timeline li { position: relative; padding-bottom: var(--sp-4); }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -21px; top: 7px; width: 9px; height: 9px; border-radius: 50%; background: var(--c-surface); border: 2px solid var(--c-blue); }
.timeline li.warn::before { border-color: var(--c-accent); }
.timeline .tl-t { font-size: var(--fs-sm); font-weight: 600; }
.timeline .tl-d { font-family: var(--font-mono); font-size: 10px; color: var(--c-muted); }

/* ——— 设计说明抽屉里的令牌样本 ——— */
.swatch { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--c-line); font-size: var(--fs-sm); }
.swatch i { width: 26px; height: 26px; border-radius: var(--r-sm); border: 1px solid var(--c-line); flex: none; }
.swatch code { margin-left: auto; font-family: var(--font-mono); font-size: 10px; color: var(--c-muted); }
.qa-list li { display: flex; gap: 10px; padding: 7px 0; font-size: var(--fs-sm); border-bottom: 1px dashed var(--c-line); }
.qa-list li b { color: var(--c-ok); }


/* ICON-PATCH-V1 —— 自绘图标与施工图线稿 */
.ico { display: inline-block; flex: none; vertical-align: -.18em; }
.art { display: block; width: 100%; height: 100%; }
.site-nav a { display: inline-flex; align-items: center; gap: 6px; }
.site-nav a .ico { opacity: .85; }
.card-head h3 .ico, .admin-page-title h1 .ico { vertical-align: -.12em; margin-right: 8px; color: var(--c-blue); }
.kpi-ico { position: absolute; right: 16px; top: 14px; color: var(--c-blue); opacity: .17; z-index: 1; line-height: 0; }
.kpi-ico .ico { width: 34px; height: 34px; }
.kpi.k-accent .kpi-ico { color: var(--c-accent); }
.kpi.k-ok .kpi-ico { color: var(--c-ok); }
.kpi.k-warn .kpi-ico { color: var(--c-warn); }
.login-art .la-illustration { position: absolute; right: -24px; bottom: 0; width: min(78%, 560px); color: #fff; opacity: .14; z-index: 1; pointer-events: none; }
.login-art .la-illustration .art { width: 100%; height: auto; }
.cc-cover .cc-art { position: absolute; right: -8px; bottom: -10px; width: 74px; height: 92px; color: rgba(255,255,255,.26); z-index: 0; pointer-events: none; }
.cc-cover .cc-art .art { width: 100%; height: 100%; }
.li-ico { display: inline-flex; vertical-align: -2px; margin-right: 6px; color: var(--c-blue); }
.lesson-item.active .li-ico { color: var(--c-blue-deep); }
.admin-rail a i { display: inline-flex; align-items: center; justify-content: center; width: 18px; }
.admin-rail a .ico { opacity: .85; }
.phone-tabbar div i { display: grid; place-items: center; height: 20px; }
.phone-tabbar div .ico { width: 19px; height: 19px; }
.mp-card h3 .ico { vertical-align: -.15em; margin-right: 5px; color: var(--c-blue); }
.mp-list .ico { color: var(--c-blue); margin-right: 2px; }
.empty .e-art { width: 108px; height: 80px; margin: 0 auto 10px; color: var(--c-blue); opacity: .35; }
.empty .e-art .art { width: 100%; height: 100%; }
.figure-strip { display: flex; align-items: center; gap: 12px; }
.ico-block { width: 38px; height: 38px; flex: none; display: grid; place-items: center; border: 1px solid var(--c-blue-line); background: var(--c-blue-soft); color: var(--c-blue-deep); border-radius: var(--r-sm); }
.ico-block .ico { width: 20px; height: 20px; }
@media (max-width: 860px) { .login-art .la-illustration { opacity: .09; width: 100%; } }


/* ICON-PATCH-V1 —— 自绘图标与施工图线稿 */
.ico { display: inline-block; flex: none; vertical-align: -.18em; }
.art { display: block; width: 100%; height: 100%; }
.site-nav a { display: inline-flex; align-items: center; gap: 6px; }
.site-nav a .ico { opacity: .85; }
.card-head h3 .ico, .admin-page-title h1 .ico { vertical-align: -.12em; margin-right: 8px; color: var(--c-blue); }
.kpi-ico { position: absolute; right: 16px; top: 14px; color: var(--c-blue); opacity: .17; z-index: 1; line-height: 0; }
.kpi-ico .ico { width: 34px; height: 34px; }
.kpi.k-accent .kpi-ico { color: var(--c-accent); }
.kpi.k-ok .kpi-ico { color: var(--c-ok); }
.kpi.k-warn .kpi-ico { color: var(--c-warn); }
.login-art .la-illustration { position: absolute; right: -24px; bottom: 0; width: min(78%, 560px); color: #fff; opacity: .14; z-index: 1; pointer-events: none; }
.login-art .la-illustration .art { width: 100%; height: auto; }
.cc-cover .cc-art { position: absolute; right: -8px; bottom: -10px; width: 74px; height: 92px; color: rgba(255,255,255,.26); z-index: 0; pointer-events: none; }
.cc-cover .cc-art .art { width: 100%; height: 100%; }
.li-ico { display: inline-flex; vertical-align: -2px; margin-right: 6px; color: var(--c-blue); }
.lesson-item.active .li-ico { color: var(--c-blue-deep); }
.admin-rail a i { display: inline-flex; align-items: center; justify-content: center; width: 18px; }
.admin-rail a .ico { opacity: .85; }
.phone-tabbar div i { display: grid; place-items: center; height: 20px; }
.phone-tabbar div .ico { width: 19px; height: 19px; }
.mp-card h3 .ico { vertical-align: -.15em; margin-right: 5px; color: var(--c-blue); }
.mp-list .ico { color: var(--c-blue); margin-right: 2px; }
.empty .e-art { width: 108px; height: 80px; margin: 0 auto 10px; color: var(--c-blue); opacity: .35; }
.empty .e-art .art { width: 100%; height: 100%; }
.figure-strip { display: flex; align-items: center; gap: 12px; }
.ico-block { width: 38px; height: 38px; flex: none; display: grid; place-items: center; border: 1px solid var(--c-blue-line); background: var(--c-blue-soft); color: var(--c-blue-deep); border-radius: var(--r-sm); }
.ico-block .ico { width: 20px; height: 20px; }
@media (max-width: 860px) { .login-art .la-illustration { opacity: .09; width: 100%; } }

/* MEMBER-PATCH-V1 —— 我的中心 */
.member-layout { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: calc(100vh - 68px); background: var(--c-surface); }
.member-rail { background: var(--c-surface-2); border-right: 1px solid var(--c-line); padding-bottom: 24px; }
.mr-brand { padding: 20px 18px; border-bottom: 1px solid var(--c-line); }
.mr-brand b { font-size: 13px; display: block; line-height: 1.3; }
.mr-brand small { font-family: var(--font-mono); font-size: 9px; letter-spacing: .16em; color: var(--c-muted); }
.mr-group { padding: 20px 18px 8px; font-family: var(--font-mono); font-size: 9px; letter-spacing: .16em; color: var(--c-muted); text-transform: uppercase; }
.member-rail a { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 18px; font-size: 13px; color: var(--c-text-2); border-left: 3px solid transparent; cursor: pointer; transition: all 160ms ease-out; }
.member-rail a:hover { background: #fff; color: var(--c-blue); }
.member-rail a.on { background: #fff; border-left-color: var(--c-accent); color: var(--c-blue-deep); font-weight: 700; }
.member-rail a .ico { opacity: .85; }
.mr-foot { margin: 28px 18px 0; padding-top: 14px; border-top: 1px solid var(--c-line); font-size: 10px; line-height: 1.9; color: var(--c-muted); }
.member-main { min-width: 0; background: var(--c-paper); }
.member-bar { height: 60px; display: flex; align-items: center; gap: 16px; padding: 0 var(--gutter); background: var(--c-surface); border-bottom: 1px solid var(--c-line); }
.member-bar .ab-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.member-content { width: var(--content-w); padding: var(--sp-6) var(--gutter) var(--sp-9); }
.member-row { display: grid; grid-template-columns: 120px minmax(0, 1fr) 160px; align-items: center; gap: 20px; padding: 18px 20px; min-height: 132px; }
.mc-cover { height: 96px; background: var(--c-sidebar); position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; padding-left: 14px; border-radius: var(--r-sm); }
.mc-cover::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px); background-size: 14px 14px; }
.mc-cover b { position: relative; z-index: 1; color: #fff; font-family: var(--font-display); font-size: 1.6rem; line-height: 1; }
.mc-cover span { position: relative; z-index: 1; color: #9FBBD6; font-size: 9px; margin-top: 4px; }
.mc-art { position: absolute; right: -6px; bottom: -8px; width: 58px; height: 76px; color: rgba(255,255,255,.22); z-index: 0; }
.mr-body { min-width: 0; }
.mr-act { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.id-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.id-box { border: 1px dashed var(--c-line-2); border-radius: var(--r-sm); padding: 18px 8px; display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; color: var(--c-muted); font-size: 11px; line-height: 1.6; background: var(--c-surface-2); }
.id-box .ico { color: var(--c-blue); opacity: .65; }
.id-box small { font-size: 9px; color: var(--c-muted-2); }
@media (max-width: 1100px) {
  .member-row { grid-template-columns: 96px minmax(0, 1fr); }
  .mr-act { grid-column: 2; flex-direction: row; justify-content: flex-end; align-items: center; }
}
@media (max-width: 860px) {
  .member-layout { grid-template-columns: minmax(0, 1fr); }
  .member-rail { display: flex; overflow-x: auto; padding: 0; border-right: 0; border-bottom: 1px solid var(--c-line); }
  .mr-brand, .mr-group, .mr-foot { display: none; }
  .member-rail a { min-height: 44px; white-space: nowrap; border-left: 0; border-bottom: 3px solid transparent; }
  .member-rail a.on { border-bottom-color: var(--c-accent); }
  .member-row { grid-template-columns: 80px minmax(0, 1fr); gap: 12px; }
  .id-grid { grid-template-columns: 1fr; }
}

/* LOGIN-CENTER-V1 —— 登录 / 注册整块居中收敛，不满铺 */
.login-shell { display: flex; justify-content: center; align-items: flex-start; padding: clamp(20px, 4vh, 52px) var(--gutter) clamp(28px, 6vh, 72px); }
.login-view { width: min(1040px, 100%); min-height: 600px; border: 1px solid var(--c-line-2); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--sh-3); }
.login-art { padding: clamp(26px, 3vw, 44px); }
.reg-view { width: min(760px, 100%); background: var(--c-surface); border: 1px solid var(--c-line-2); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--sh-3); }
.reg-head { background: var(--c-sidebar); color: #fff; padding: 26px 32px; display: flex; align-items: center; gap: 18px; position: relative; overflow: hidden; }
.reg-head::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 22px 22px; }
.reg-head > * { position: relative; z-index: 1; }
.reg-head img { height: 44px; }
.reg-head h1 { font-size: var(--fs-2xl); font-weight: 700; letter-spacing: -.03em; margin: 4px 0; }
.reg-head p { font-size: 12px; color: #B9CCDD; }
.reg-head-art { position: absolute !important; right: -10px; bottom: -20px; width: 190px; height: 150px; color: #fff; opacity: .1; z-index: 0 !important; pointer-events: none; }
.reg-body { padding: 30px 36px 36px; }
.reg-tip { font-size: 12px; line-height: 1.8; color: var(--c-text-2); background: var(--c-blue-soft); border: 1px solid var(--c-blue-line); padding: 10px 14px; margin: 18px 0 20px; border-radius: var(--r-sm); }
.upload-box { border: 1px dashed var(--c-line-2); border-radius: var(--r-sm); background: var(--c-surface-2); padding: 22px; display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--c-muted); font-size: 12px; cursor: pointer; transition: all 160ms ease-out; }
.upload-box:hover { border-color: var(--c-blue); color: var(--c-blue); background: var(--c-blue-soft); }
.upload-box .ico { color: var(--c-blue); }
.upload-box small { font-family: var(--font-mono); font-size: 9px; color: var(--c-muted-2); }
@media (max-width: 860px) {
  .login-view { grid-template-columns: 1fr; min-height: auto; }
  .login-art { min-height: 250px; }
  .login-panel { padding: 28px 20px; }
  .reg-body { padding: 22px 20px 28px; }
  .reg-head { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
}