/* 平台管理端（QZ-160，B 的画布 https://claude.ai/artifact/9gZquoiiEzV5c6nFfwfCQv）。
   颜色、字体、圆角、日夜两套都照且坐（qz-tokens.css）；管理端自己的只有两样：左边导航和手机顶栏的深墨绿底、名字下面的暖灯色「平台管理端」标签，
   老师端没有这两样，一眼看得出是管理端。这几个颜色只写在下面这一块里（照画板的 --ink、--lamp），别处只用 token。
   电脑优先：左导航 232 宽 + 表格；960 以下导航收进顶栏的「菜单」；760 以下表格每行变成一张卡片，横向不滚。 */
:root {
  --adm-ink: #1f2b27;
  --adm-on-ink: #ece6d8;
  --adm-ink-2: #b3bdb6;
  --adm-ink-on: #33453e;
  --adm-ink-line: #33453e;
  --adm-lamp: #d9a86c;
  --adm-on-lamp: #1f2b27;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --adm-ink: #0d1110;
    --adm-ink-2: #a3ada6;
    --adm-ink-on: #25332e;
    --adm-ink-line: #25332e;
    --adm-on-lamp: #1a1a16;
  }
}
:root[data-theme="dark"] {
  --adm-ink: #0d1110;
  --adm-ink-2: #a3ada6;
  --adm-ink-on: #25332e;
  --adm-ink-line: #25332e;
  --adm-on-lamp: #1a1a16;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
.adm-body { min-height: 100vh; background: var(--color-bg-page); color: var(--color-text-primary); font-family: var(--font-sans); font-size: 15px; line-height: var(--line-height-normal); letter-spacing: var(--letter-spacing-text); -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }
a { color: var(--color-brand); }
.adm-boot { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.adm-boot__fail { color: var(--color-text-secondary); }
.toast-host { position: fixed; left: 0; right: 0; bottom: var(--space-8); z-index: var(--z-toast); display: flex; justify-content: center; pointer-events: none; padding: 0 var(--space-4); }
.toast-host .qz-toast { pointer-events: auto; }
.adm-toast { max-width: 560px; }
.adm-toast__undo { margin-left: var(--space-2); min-height: var(--size-tap); padding: 0 var(--space-2); border: 0; background: none; color: inherit; font: inherit; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }

/* 暖灯色标签「平台管理端」 */
.adm-lamp { display: inline-flex; align-items: center; align-self: flex-start; min-height: 22px; padding: 0 8px; border-radius: 6px; background: var(--adm-lamp); color: var(--adm-on-lamp); font-size: 12px; letter-spacing: .05em; white-space: nowrap; }

/* ---------- 登录 ---------- */
.adm-login { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-8) var(--space-4); background: var(--adm-ink); }
.adm-login__col { width: 100%; max-width: 380px; display: flex; flex-direction: column; align-items: center; gap: var(--space-5); }
.adm-login__brand { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); color: var(--adm-on-ink); }
.adm-login__mark .qz-wordmark { height: 26px; width: auto; color: var(--adm-on-ink); }
.adm-login__brand .adm-lamp { align-self: center; }
.adm-login__card { width: 100%; padding: var(--space-6); border-radius: var(--radius-xl); background: var(--color-bg-raised); display: flex; flex-direction: column; gap: var(--space-4); }
.adm-login__title { margin: 0; font-size: var(--font-size-500); font-weight: var(--font-weight-regular); }
.adm-steps { display: flex; gap: var(--space-2); margin: 0; padding: 0; list-style: none; font-size: var(--font-size-100); color: var(--color-text-tertiary); counter-reset: step; }
.adm-steps li { counter-increment: step; }
.adm-steps li::before { content: counter(step) " "; }
.adm-steps li + li::before { content: "· " counter(step) " "; }
.adm-steps li[aria-current] { color: var(--color-brand); }
.adm-login__form { display: flex; flex-direction: column; gap: var(--space-4); }
.adm-login__notice:empty { display: none; }
.adm-login__lead { margin: 0; color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-login__foot { margin: 0; color: var(--color-text-tertiary); font-size: var(--font-size-100); }
.adm-login__row { display: flex; justify-content: space-between; gap: var(--space-3); }
.adm-code { letter-spacing: .5em; font-family: var(--font-numeric); }

/* ---------- 外框：左导航 + 版面 ---------- */
.adm-shell { min-height: 100vh; display: grid; grid-template-columns: 232px minmax(0, 1fr); }
.adm-topbar { display: none; }
.adm-side { position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; gap: var(--space-6); padding: var(--space-6) 14px var(--space-5); background: var(--adm-ink); color: var(--adm-on-ink); }
.adm-side__brand { display: flex; flex-direction: column; gap: var(--space-2); padding: 0 var(--space-3); }
.adm-side__mark .qz-wordmark { height: 22px; width: auto; color: var(--adm-on-ink); }
.adm-nav { display: flex; flex-direction: column; gap: 2px; }
.adm-nav__item { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); min-height: var(--size-tap); padding: 0 var(--space-3); border-radius: var(--radius-md); color: var(--adm-on-ink); text-decoration: none; }
.adm-nav__item:hover { background: var(--adm-ink-on); }
.adm-nav__item[aria-current="page"] { background: var(--adm-ink-on); }
.adm-nav__item:focus-visible { outline: 2px solid var(--adm-lamp); outline-offset: 2px; }
.adm-nav__item.is-later { color: var(--adm-ink-2); cursor: default; }
.adm-nav__item.is-later:hover { background: none; }
.adm-nav__group { margin: var(--space-4) var(--space-3) 0; color: var(--adm-ink-2); font-size: var(--font-size-100); }
.adm-later { display: inline-flex; align-items: center; min-height: 18px; padding: 0 6px; border: 1px solid currentColor; border-radius: 6px; font-size: 11px; line-height: 1; white-space: nowrap; }
.adm-side__foot { margin-top: auto; padding: var(--space-4) var(--space-3) 0; border-top: 1px solid var(--adm-ink-line); font-size: var(--font-size-200); color: var(--adm-ink-2); }
.adm-side__me, .adm-side__idle { margin: 0; }
.adm-side__me { color: var(--adm-on-ink); }
.adm-side__logout { min-height: var(--size-tap); padding: 0; border: 0; background: none; color: var(--adm-on-ink); font: inherit; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.adm-side__logout:focus-visible, .adm-topbar__menu:focus-visible { outline: 2px solid var(--adm-lamp); outline-offset: 2px; }
.adm-main { min-width: 0; padding: var(--space-6) var(--space-10) var(--space-14); display: flex; flex-direction: column; gap: var(--space-5); outline: none; }
.adm-loading { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text-secondary); padding: var(--space-8) 0; }

/* ---------- 页头 ---------- */
.adm-head { display: flex; flex-direction: column; gap: var(--space-2); }
.adm-crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: var(--font-size-200); color: var(--color-text-secondary); }
.adm-crumbs a { text-decoration: none; }
.adm-head__row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.adm-head__title { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); margin: 0; font-size: var(--font-size-600); font-weight: var(--font-weight-regular); line-height: var(--line-height-tight); }
.adm-head__actions { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; }
.adm-head__actions a.qz-btn { text-decoration: none; }
.adm-btn--danger { border-color: var(--color-danger); color: var(--color-danger); }
a.qz-btn { text-decoration: none; }

/* ---------- 四个数 ---------- */
.adm-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); }
.adm-stat { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg-surface); }
.adm-stat__label { color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-stat__value { font-family: var(--font-numeric); font-size: var(--font-size-600); font-weight: var(--font-weight-light); line-height: var(--line-height-tight); }
.adm-stat__sub { color: var(--color-text-secondary); font-size: var(--font-size-100); }
.adm-stat__sub a { text-decoration: none; }

/* ---------- 搜索、筛选、排序 ---------- */
.adm-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.adm-toolbar__chips { display: contents; }
.adm-search { flex: 0 1 280px; display: flex; }
.adm-search__input { width: 100%; height: var(--size-control-sm); padding: 0 var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-full); background: var(--color-bg-surface); color: var(--color-text-primary); font: inherit; font-size: var(--font-size-input); }
.adm-search__input:focus { border-color: var(--color-brand); outline: none; box-shadow: inset 0 0 0 .5px var(--color-brand); }
.adm-chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.adm-chip { display: inline-flex; align-items: center; gap: 6px; min-height: var(--size-control-sm); padding: 0 var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-full); background: none; color: var(--color-text-primary); font: inherit; font-size: var(--font-size-200); cursor: pointer; }
.adm-chip[aria-pressed="true"] { border-color: transparent; background: var(--color-brand-soft); color: var(--color-on-brand-soft); }
.adm-chip:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.adm-chip__n { font-family: var(--font-numeric); color: inherit; }
.adm-sort { display: inline-flex; align-items: center; gap: var(--space-2); margin-left: auto; color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-select { min-height: var(--size-control-sm); padding: 0 var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-full); background: var(--color-bg-surface); color: var(--color-text-primary); font: inherit; font-size: var(--font-size-200); }
.adm-select:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* ---------- 表 ---------- */
.adm-table-wrap { overflow-x: auto; }
.adm-table th { background: var(--color-bg-sunken); }
.adm-table td { vertical-align: middle; }
.adm-table tr.is-link { cursor: pointer; }
.adm-table tr.is-link:hover td { background: var(--color-bg-raised); }
.adm-table .is-end { text-align: right; }
.adm-table .adm-detail { min-width: 12em; }
.adm-cell { display: inline-flex; flex-direction: column; gap: 2px; min-width: 0; }
.adm-cell--num { align-items: flex-end; }
.adm-cell__title { color: var(--color-text-primary); text-decoration: none; }
a.adm-cell__title:hover { text-decoration: underline; text-underline-offset: 3px; }
.adm-cell__sub { color: var(--color-text-tertiary); font-size: var(--font-size-100); }
.adm-tags { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.adm-neg { color: var(--color-danger); }
.adm-muted { color: var(--color-text-tertiary); font-size: var(--font-size-200); }
.adm-empty { padding: var(--space-8) var(--space-4); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-lg); color: var(--color-text-secondary); text-align: center; }
.adm-pager { display: flex; align-items: center; justify-content: center; gap: var(--space-3); color: var(--color-text-secondary); font-size: var(--font-size-200); }

/* ---------- 卡片、分节、详情 ---------- */
.adm-card { display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-4) var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg-surface); }
.adm-section { display: flex; flex-direction: column; gap: var(--space-3); min-width: 0; }
.adm-section__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.adm-section__title { margin: 0; font-size: var(--font-size-300); font-weight: var(--font-weight-regular); }
.adm-more { font-size: var(--font-size-200); text-decoration: none; }
.adm-note { margin: 0; color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-gap { align-items: center; }
.adm-stack { display: flex; flex-direction: column; gap: var(--space-5); }
.adm-narrow { max-width: 720px; display: flex; flex-direction: column; gap: var(--space-4); }
.adm-split { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: var(--space-6); align-items: start; }
.adm-split--form { grid-template-columns: minmax(0, 1fr) 300px; max-width: 1040px; }
@media (max-width: 1199px) { .adm-split--form { grid-template-columns: minmax(0, 1fr); max-width: 720px; } }
.adm-split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
@media (max-width: 1279px) { .adm-split--even { grid-template-columns: minmax(0, 1fr); } }
.adm-split__main, .adm-split__side { display: flex; flex-direction: column; gap: var(--space-5); min-width: 0; }
.adm-kv { display: grid; grid-template-columns: 6em minmax(0, 1fr); margin: 0; }
.adm-kv dt, .adm-kv dd { margin: 0; padding: var(--space-3) 0; border-top: 1px solid var(--color-border); }
.adm-kv dt:first-of-type, .adm-kv dd:first-of-type { border-top: 0; }
.adm-kv dt { color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-inline { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2); }
.adm-break { overflow-wrap: anywhere; }
.adm-balance-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: var(--space-4); }
.adm-balance-row > .adm-card { flex: 0 1 480px; }
.adm-balance { display: flex; flex-direction: column; gap: var(--space-1); }
.adm-balance__value { font-family: var(--font-numeric); font-size: var(--font-size-700); font-weight: var(--font-weight-light); line-height: var(--line-height-tight); }
.adm-switches { display: flex; flex-direction: column; }
.adm-switches > * + * { border-top: 1px solid var(--color-border); }
.adm-switch { padding: var(--space-2) 0; }
.adm-switch__text { display: flex; flex-direction: column; }
.adm-switch--bare { width: auto; padding: 0; }
.adm-tabs { display: flex; flex-wrap: wrap; gap: var(--space-1); border-bottom: 1px solid var(--color-border); }
.adm-tab { display: inline-flex; align-items: center; gap: 6px; min-height: var(--size-tap); padding: 0 var(--space-4); margin-bottom: -1px; border-bottom: 2px solid transparent; color: var(--color-text-secondary); text-decoration: none; }
.adm-tab[aria-current="page"] { border-bottom-color: var(--color-brand); color: var(--color-text-primary); }
.adm-tab.is-later { color: var(--color-text-disabled); cursor: default; }
.adm-tab.is-later .adm-later { color: var(--color-text-tertiary); }
.adm-textbtn { display: inline-flex; align-items: center; gap: 4px; min-height: 32px; padding: 0 2px; border: 0; background: none; color: var(--color-brand); font: inherit; font-size: var(--font-size-200); text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.adm-nowrap { white-space: nowrap; }
.adm-textbtn { white-space: nowrap; }
.adm-textbtn:disabled { color: var(--color-text-disabled); text-decoration: none; cursor: default; }
.adm-textbtn:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.adm-textbtn--danger { color: var(--color-danger); }
.adm-debit { display: inline-flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.adm-debit__list { flex-basis: 100%; margin: var(--space-1) 0 0; padding-left: 1.2em; color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-month { display: inline-flex; align-items: center; gap: var(--space-1); }
.adm-month__label { min-width: 7em; text-align: center; font-family: var(--font-numeric); }
.adm-howto { margin: 0; padding-left: 1.2em; display: flex; flex-direction: column; gap: var(--space-2); color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-details summary { min-height: var(--size-tap); display: flex; align-items: center; color: var(--color-brand); cursor: pointer; }
.adm-details[open] > div { display: flex; flex-direction: column; gap: var(--space-2); }

/* ---------- 手机号 ---------- */
.adm-phone { display: inline-flex; flex-wrap: nowrap; white-space: nowrap; align-items: center; gap: var(--space-2); }
.adm-phone__num { font-family: var(--font-numeric); white-space: nowrap; }
.adm-phone__num.is-full { color: var(--color-text-primary); }
.adm-phone__left { color: var(--color-text-tertiary); font-size: var(--font-size-100); }
.adm-phone__reveal .qz-icon { width: 16px; height: 16px; }

/* ---------- 表单、弹窗 ---------- */
.adm-form { display: flex; flex-direction: column; gap: var(--space-4); }
.adm-form__actions { display: flex; justify-content: flex-end; gap: var(--space-2); flex-wrap: wrap; }
.adm-form__actions--start { justify-content: flex-start; }
.adm-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3) var(--space-4); align-items: start; }
.adm-field .qz-input { height: var(--size-control-sm); }
.qz-field__hint.adm-ok { color: var(--color-success); }
.adm-swatches { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.adm-swatch { position: relative; display: inline-flex; width: var(--size-tap); height: var(--size-tap); align-items: center; justify-content: center; border-radius: var(--radius-full); cursor: pointer; }
.adm-swatch input { position: absolute; inset: 0; margin: 0; opacity: 0; cursor: inherit; }
.adm-swatch__dot { width: 34px; height: 34px; border-radius: var(--radius-full); }
.adm-swatch:has(input:checked) { box-shadow: 0 0 0 2px var(--color-brand); }
.adm-swatch:has(input:focus-visible) { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.adm-swatch--preset-1 .adm-swatch__dot { background: var(--preset-1-brand); }
.adm-swatch--preset-2 .adm-swatch__dot { background: var(--preset-2-brand); }
.adm-swatch--preset-3 .adm-swatch__dot { background: var(--preset-3-brand); }
.adm-swatch--preset-4 .adm-swatch__dot { background: var(--preset-4-brand); }
.adm-swatch--preset-5 .adm-swatch__dot { background: var(--preset-5-brand); }
.adm-swatch--preset-6 .adm-swatch__dot { background: var(--preset-6-brand); }
.adm-dialog { max-width: 440px; max-height: calc(100vh - var(--space-10)); overflow-y: auto; }
.adm-dialog--wide { max-width: 600px; }
.adm-dialog__title { font-size: var(--font-size-500); font-weight: var(--font-weight-regular); }
.adm-dialog__body { display: flex; flex-direction: column; gap: var(--space-3); }
.adm-dialog__lead { margin: 0; }
.adm-dialog__small { margin: 0; color: var(--color-text-secondary); font-size: var(--font-size-200); }
.adm-dialog__notice { margin-top: var(--space-3); }
.adm-dialog__actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-5); }
.adm-bullets { margin: 0; padding-left: 1.2em; display: flex; flex-direction: column; gap: var(--space-1); font-size: var(--font-size-200); }
.adm-bullets strong { font-weight: 500; }
.adm-check { min-height: var(--size-tap); }

/* ---------- 窄屏：导航收进顶栏「菜单」 ---------- */
@media (max-width: 959px) {
  .adm-shell { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto minmax(0, 1fr); }
  .adm-topbar { position: sticky; top: 0; z-index: var(--z-sticky); display: flex; align-items: center; gap: var(--space-2); min-height: 56px; padding: 0 var(--space-2) 0 var(--space-4); background: var(--adm-ink); color: var(--adm-on-ink); }
  .adm-topbar__mark .qz-wordmark { height: 18px; width: auto; color: var(--adm-on-ink); }
  .adm-topbar .adm-lamp { align-self: center; }
  .adm-topbar__menu { margin-left: auto; min-height: var(--size-tap); padding: 0 var(--space-3); border: 1px solid var(--adm-ink-2); border-radius: var(--radius-full); background: none; color: var(--adm-on-ink); font: inherit; font-size: var(--font-size-200); cursor: pointer; }
  .adm-side { display: none; position: fixed; top: 56px; left: 0; right: 0; bottom: 0; height: auto; z-index: var(--z-overlay); }
  .adm-side__brand { display: none; }
  .is-nav-open .adm-side { display: flex; }
  .adm-main { padding: var(--space-5) var(--space-4) var(--space-14); }
  .adm-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adm-split, .adm-split--form, .adm-split--even { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 手机：表格每行一张卡片 ---------- */
@media (max-width: 759px) {
  .adm-table-wrap { overflow: visible; border: 0; background: none; }
  .adm-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .adm-table, .adm-table tbody, .adm-table tr, .adm-table td { display: block; width: 100%; }
  .adm-table tr { margin-bottom: var(--space-3); padding: var(--space-3) var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg-surface); }
  .adm-table td { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding: 6px 0; border: 0; text-align: right; }
  .adm-table td::before { content: attr(data-label); flex: none; color: var(--color-text-secondary); font-size: var(--font-size-200); text-align: left; }
  .adm-table td:first-child { justify-content: flex-start; text-align: left; padding-bottom: var(--space-2); }
  .adm-table td:first-child::before { content: none; }
  .adm-table td[data-label=""]::before { content: none; }
  .adm-table .is-end { justify-content: flex-end; }
  .adm-table .adm-detail { min-width: 0; }
  .adm-table td.adm-nowrap { white-space: normal; }
  .adm-table caption { display: block; }
  .adm-table--compact tr { display: flex; flex-wrap: wrap; align-items: center; column-gap: var(--space-3); row-gap: 2px; }
  .adm-table--compact td { display: inline-flex; width: auto; gap: 4px; padding: 0; font-size: var(--font-size-200); text-align: left; }
  .adm-table--compact td::before { font-size: var(--font-size-100); color: var(--color-text-tertiary); }
  .adm-table--compact td:first-child { flex: 1 1 calc(100% - 160px); min-width: 0; padding-bottom: var(--space-2); font-size: var(--font-size-300); }
  .adm-table--compact td:nth-child(2) { flex: 0 0 140px; justify-content: flex-end; padding-bottom: var(--space-2); }
  .adm-table--compact td:nth-child(2)::before { content: none; }
  .adm-toolbar { align-items: stretch; }
  .adm-search { flex: 1 1 100%; }
  .adm-sort { margin-left: 0; }
  .adm-grid2 { grid-template-columns: minmax(0, 1fr); }
  .adm-head__title { font-size: var(--font-size-500); }
  .adm-stat__value { font-size: var(--font-size-500); }
  .adm-kv { grid-template-columns: 5em minmax(0, 1fr); }
  .adm-dialog__actions .qz-btn { flex: 1; }
}