/* 青禾 · 计师班班级空间
   移动优先；颜色全部跟随明暗主题。 */

:root {
  --paper: #f5f2ea;
  --paper-2: #efece2;
  --card: #ffffff;
  --card-2: #faf8f2;
  --ink: #1c2822;
  --ink-2: #46544b;
  --muted: #5f6c63;
  --border: #e2ded1;
  --border-strong: #cfcaba;
  --primary: #2a6350;
  --primary-strong: #1f4d3e;
  --primary-soft: #e7f0e9;
  --on-primary: #ffffff;
  --warm: #a45a3a;
  --warm-strong: #7e442d;
  --warm-soft: #f9ece1;
  --danger: #a33a30;
  --danger-soft: #fbeae7;
  --ok: #2f6b4f;
  --ok-soft: #e6f2ea;
  --hero-bg: #234d40;
  --hero-ink: #f4f7f4;
  --shadow: 0 1px 2px rgba(28, 40, 34, .05), 0 10px 28px rgba(28, 40, 34, .04);
  --font-sans: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-code: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  --tag-safety-bg: #fbeae7;
  --tag-safety-ink: #8f3329;
  --tag-activity-bg: #e7f0e9;
  --tag-activity-ink: #2a6350;
  --tag-important-bg: #e8eef4;
  --tag-important-ink: #2d5170;
  --tag-exam-bg: #f8efdc;
  --tag-exam-ink: #7c5518;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121614;
    --paper-2: #171c19;
    --card: #1c231f;
    --card-2: #222a25;
    --ink: #e8efea;
    --ink-2: #b5c3ba;
    --muted: #93a197;
    --border: #2c3530;
    --border-strong: #3a453f;
    --primary: #7cc0a4;
    --primary-strong: #9ad4bb;
    --primary-soft: #1d2c25;
    --on-primary: #10201a;
    --warm: #e3a786;
    --warm-strong: #efb99a;
    --warm-soft: #2c211a;
    --danger: #ef9a8f;
    --danger-soft: #33201d;
    --ok: #8ccaa9;
    --ok-soft: #1b2a22;
    --hero-bg: #243b31;
    --hero-ink: #e8efea;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .18);
    --tag-safety-bg: #3a211d;
    --tag-safety-ink: #f0b1a6;
    --tag-activity-bg: #1d2c25;
    --tag-activity-ink: #9ad4bb;
    --tag-important-bg: #1d2731;
    --tag-important-ink: #a9c3dc;
    --tag-exam-bg: #322815;
    --tag-exam-ink: #e6c483;
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.page-tree {
  --paper: #f7f1e8;
  --paper-2: #f1e9dd;
  --card: #fffdfa;
  --card-2: #fbf5ec;
  --ink: #2a211b;
  --ink-2: #5c4c40;
  --muted: #7a685a;
  --border: #e8ddcf;
  --border-strong: #d8c8b6;
  --primary: #a45a3a;
  --primary-strong: #7e442d;
  --primary-soft: #f6e7da;
  --on-primary: #ffffff;
  --warm: #a45a3a;
  --warm-strong: #7e442d;
  --warm-soft: #f9ece1;
  background:
    radial-gradient(120% 46% at 50% 0%, var(--warm-soft) 0%, transparent 62%),
    var(--paper);
}

@media (prefers-color-scheme: dark) {
  body.page-tree {
    --paper: #17130f;
    --paper-2: #1d1814;
    --card: #211b16;
    --card-2: #271f19;
    --ink: #f1e9e1;
    --ink-2: #cbb9aa;
    --muted: #a99585;
    --border: #332a23;
    --border-strong: #443830;
    --primary: #e3a786;
    --primary-strong: #efb99a;
    --primary-soft: #2c211a;
    --on-primary: #2a1a12;
    --warm: #e3a786;
    --warm-strong: #efb99a;
    --warm-soft: #2c211a;
    --hero-bg: #33241b;
    --hero-ink: #f6ece3;
  }
}

img, svg { max-width: 100%; }
.icon { flex: none; }

a { color: var(--primary); }

h1, h2, h3 {
  margin: 0;
  font-weight: 500;
  line-height: 1.3;
}

h1 { font-size: 28px; letter-spacing: -.01em; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }

p { margin: 0 0 10px; }
p:last-child { margin-bottom: 0; }

.wrap {
  width: min(100% - 32px, 760px);
  margin-inline: auto;
}

.main {
  flex: 1 0 auto;
  padding: 22px 0 36px;
  min-height: 50vh;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  background: var(--card);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------- header */

.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--on-primary);
  flex: none;
}

.brand-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.top-nav {
  display: none;
  gap: 4px;
  margin-left: 10px;
}

.top-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
}
.top-nav a:hover { background: var(--card-2); color: var(--ink); }
.top-nav a[aria-current="page"] {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 500;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  min-width: 0;
}

.tool-link, .tool-user {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 38px;
  padding: 0 9px;
  border-radius: 9px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.tool-link:hover, .tool-user:hover { background: var(--card-2); color: var(--ink); }
.as-button { padding: 0 8px; }

.tool-user {
  max-width: 92px;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--ink);
  font-weight: 500;
}

.nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
}

.inline-form { display: inline; margin: 0; }

/* ---------------------------------------------------------------- tabbar */

.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  background: var(--card);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}

.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 58px;
  color: var(--muted);
  text-decoration: none;
  font-size: 11px;
}
.tab.is-active { color: var(--primary); }
.tab-icon { position: relative; display: inline-flex; }

.tab-dot {
  position: absolute;
  top: -2px;
  right: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warm);
  border: 2px solid var(--card);
}

/* ---------------------------------------------------------------- footer */

.site-foot {
  border-top: 1px solid var(--border);
  padding: 18px 0 calc(84px + env(safe-area-inset-bottom));
  color: var(--muted);
  font-size: 12px;
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  justify-content: space-between;
}
.site-foot a { color: var(--muted); text-decoration: none; }
.site-foot a:hover { color: var(--primary); text-decoration: underline; }

/* ---------------------------------------------------------------- headings */

.page-head { margin-bottom: 20px; }
.page-head h1 { margin: 2px 0 6px; }
.page-head-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.page-head-row > .btn { flex: none; }
.page-head-row > div { min-width: 0; }

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
}

.lede { color: var(--ink-2); font-size: 14px; margin: 0; }

.section { margin-top: 28px; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.section-head h2 { font-size: 17px; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--primary);
  font-size: 13px;
  text-decoration: none;
}
.text-link:hover { text-decoration: underline; }

.count-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 11px;
  font-weight: 500;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 38px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}
.back-link:hover { color: var(--primary); }

.muted { color: var(--muted); }
.fineprint { color: var(--muted); font-size: 12px; line-height: 1.7; margin: 10px 0 0; }

/* ---------------------------------------------------------------- surfaces */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.empty-state {
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  background: var(--card);
  border: 1px dashed var(--border-strong);
  border-radius: 14px;
}

.empty-card { text-align: center; }
.empty-card h2 { margin-bottom: 6px; }

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, opacity .15s ease;
}
.btn:hover { opacity: .92; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-ghost { background: var(--card); border-color: var(--border-strong); color: var(--ink); }
.btn-ghost:hover { background: var(--card-2); }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.btn-sm { min-height: 36px; padding: 0 12px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; }

.text-danger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  color: var(--danger);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.text-danger:hover { text-decoration: underline; }

.danger-zone { display: flex; justify-content: center; margin-top: 18px; }

/* ---------------------------------------------------------------- tags & badges */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.7;
  white-space: nowrap;
}
.tag-safety { background: var(--tag-safety-bg); color: var(--tag-safety-ink); }
.tag-activity { background: var(--tag-activity-bg); color: var(--tag-activity-ink); }
.tag-important { background: var(--tag-important-bg); color: var(--tag-important-ink); }
.tag-exam { background: var(--tag-exam-bg); color: var(--tag-exam-ink); }
.tag-soft { background: var(--primary-soft); color: var(--primary); }
.tag-warm { background: var(--warm-soft); color: var(--warm-strong); }
.tag-light { background: rgba(255, 255, 255, .16); color: var(--hero-ink); }

.pin-flag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 500;
}

.status-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}
.status-badge.is-done { background: var(--ok-soft); color: var(--ok); }

.role-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
}
.role-member { background: var(--paper-2); color: var(--ink-2); }
.role-admin { background: var(--primary-soft); color: var(--primary); }
.role-counselor { background: var(--warm-soft); color: var(--warm-strong); }
.role-superadmin { background: var(--tag-important-bg); color: var(--tag-important-ink); }

.unread-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  flex: none;
}

/* ---------------------------------------------------------------- chips */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-2);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.is-on {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
  font-weight: 500;
}
.chip.is-on .chip-count { background: rgba(255, 255, 255, .2); color: var(--on-primary); }

.chip input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.chip:has(input:checked) {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 500;
}
.chip input:checked + span { color: var(--primary); font-weight: 500; }
.chip:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }

.chip-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--muted);
  font-size: 11px;
}

.filter-chips { margin-bottom: 18px; }
.chip-field { border: none; padding: 0; margin: 0 0 18px; }
.chip-field legend {
  padding: 0;
  margin-bottom: 8px;
  color: var(--ink-2);
  font-size: 13px;
}

/* ---------------------------------------------------------------- forms */

.field { display: block; margin-bottom: 14px; }
.field > span { display: block; margin-bottom: 6px; color: var(--ink-2); font-size: 13px; }
.field-help { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }

input, select, textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
}
textarea { resize: vertical; min-height: 120px; line-height: 1.7; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: .8; }
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
  outline: none;
}

.field-label { display: block; margin-bottom: 6px; color: var(--ink-2); font-size: 13px; }

.counter {
  display: block;
  margin-top: 5px;
  text-align: right;
  color: var(--muted);
  font-size: 11px;
}

.form-card { margin-bottom: 18px; }
.form-card h2 { margin-bottom: 12px; }
.stack .field { margin-bottom: 12px; }
.stack { display: block; }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.field-grid { display: grid; grid-template-columns: 1fr; gap: 0 14px; }

.check-field {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  color: var(--ink-2);
  font-size: 14px;
  cursor: pointer;
}
.check-field input {
  width: 18px;
  min-height: 18px;
  height: 18px;
  accent-color: var(--primary);
  margin: 0;
}

.form-error {
  margin: 0 0 14px;
  padding: 11px 14px;
  border-radius: 10px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13px;
}
.form-error ul { margin: 6px 0 0; padding-left: 18px; }

.inline-form-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}
.inline-form-row .field { margin-bottom: 0; }
.grow { flex: 1; min-width: 140px; }

/* ---------------------------------------------------------------- flash */

.flash-stack { margin-bottom: 16px; }
.flash {
  margin: 0 0 8px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 13px;
  border: 1px solid transparent;
}
.flash-ok { background: var(--ok-soft); color: var(--ok); }
.flash-error { background: var(--danger-soft); color: var(--danger); }
.flash-info { background: var(--primary-soft); color: var(--primary); }

/* ---------------------------------------------------------------- home */

.home-head h1 { font-size: 26px; }

.home-grid { display: flex; flex-direction: column; }
.home-lead, .home-side, .home-feed { display: contents; }
.home-grid .hero-card, .home-grid .empty-card { order: 1; }
.home-grid .quick-grid { order: 2; }
.home-grid .transparency { order: 3; }
.home-grid .section { order: 4; }
.home-grid .admin-strip { order: 5; }

.hero-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px;
  border-radius: 20px;
  background: var(--hero-bg);
  color: var(--hero-ink);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform .15s ease;
}
.hero-card:hover { transform: translateY(-1px); }
.hero-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.hero-days {
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
  font-size: 12px;
  white-space: nowrap;
}
.hero-title { font-size: 22px; font-weight: 500; line-height: 1.35; }
.hero-excerpt { font-size: 13px; opacity: .82; line-height: 1.6; }
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  font-size: 13px;
  opacity: .92;
}

.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
}

.quick-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px;
  border-radius: 15px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
  min-height: 118px;
}
.quick-card:hover { border-color: var(--border-strong); }
.quick-warm { background: var(--warm-soft); border-color: transparent; }
.quick-warm .quick-icon { background: var(--card); color: var(--warm); }
.quick-warm .quick-desc { color: var(--ink-2); }

.quick-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  flex: none;
}
.quick-title { font-size: 15px; font-weight: 500; }
.quick-desc { color: var(--muted); font-size: 12px; line-height: 1.55; }

.transparency {
  margin-top: 18px;
  padding: 15px 17px;
  border-radius: 14px;
  background: var(--primary-soft);
  font-size: 13px;
  color: var(--ink-2);
}
.transparency strong { color: var(--primary); font-size: 17px; font-weight: 500; margin: 0 1px; }
.transparency .text-link { margin-top: 7px; color: var(--primary); }

.notice-list { display: flex; flex-direction: column; gap: 8px; }

.notice-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 15px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
}
.notice-row:hover { border-color: var(--border-strong); }
.notice-row.is-pinned { border-left: 3px solid var(--primary); }
.notice-row-main { display: flex; flex-direction: column; gap: 5px; min-width: 0; flex: 1; }
.notice-row-top { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.notice-title { font-size: 15px; font-weight: 500; line-height: 1.45; }
.notice-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
}
.notice-arrow { color: var(--muted); flex: none; }

.meta-chip {
  display: inline-block;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  font-size: 11px;
  line-height: 1.7;
}
.meta-chip.is-today { background: var(--warm-soft); color: var(--warm-strong); }
.meta-chip.is-overdue { background: var(--paper-2); color: var(--muted); text-decoration: line-through; }

.admin-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding: 12px 15px;
  border-radius: 12px;
  border: 1px dashed var(--border-strong);
  color: var(--ink-2);
  font-size: 13px;
  text-decoration: none;
}
.admin-strip:hover { border-color: var(--primary); color: var(--primary); }
.admin-strip .quick-icon { width: 30px; height: 30px; }

.page-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
}

/* ---------------------------------------------------------------- article */

.article { padding: 22px; }
.article-top { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.article h1 { margin-bottom: 8px; font-size: 26px; }
.article-meta { color: var(--muted); font-size: 12px; }

.deadline-banner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  margin: 16px 0 0;
  padding: 10px 13px;
  border-radius: 10px;
  background: var(--tag-exam-bg);
  color: var(--tag-exam-ink);
  font-size: 13px;
}
.deadline-banner strong { font-weight: 500; margin-left: auto; }

.article-body {
  margin-top: 18px;
  white-space: pre-wrap;
  line-height: 1.85;
  font-size: 15px;
  overflow-wrap: anywhere;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.article-actions form { margin: 0; }

/* ---------------------------------------------------------------- feedback */

.trust-card {
  display: flex;
  gap: 14px;
  padding: 18px;
  border-radius: 16px;
  background: var(--primary-soft);
  margin-bottom: 16px;
}
.trust-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--card);
  color: var(--primary);
  flex: none;
}
.trust-card h2 { font-size: 16px; margin-bottom: 6px; }
.trust-list {
  margin: 0;
  padding-left: 17px;
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.8;
}

.lookup-card { margin-top: 18px; }
.lookup-card h2 { font-size: 16px; margin-bottom: 4px; }
.lookup-card .muted { margin-bottom: 12px; font-size: 13px; }

.code-card { text-align: center; padding: 26px 20px; }
.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ok-soft);
  color: var(--ok);
  margin-bottom: 12px;
}
.code-card h2 { margin-bottom: 5px; }
.code-value {
  margin: 18px 0;
  padding: 14px 10px;
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
  background: var(--paper-2);
  font-family: var(--font-code);
  font-size: 25px;
  letter-spacing: .12em;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.code-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
}
.code-actions form { margin: 0; }
.warn-note {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 12px;
  line-height: 1.65;
  text-align: left;
}
.warn-note .icon { margin-top: 2px; }

.thread-head .thread-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 8px; }

.privacy-note {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
  margin-bottom: 16px;
}
.privacy-note .icon { margin-top: 2px; }

.thread {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 18px;
  padding: 0;
}

.msg {
  max-width: 88%;
  padding: 11px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
}
.msg-other { align-self: flex-start; border-bottom-left-radius: 5px; }
.msg-mine {
  align-self: flex-end;
  background: var(--primary-soft);
  border-color: transparent;
  border-bottom-right-radius: 5px;
}
.msg-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 11px;
}
.msg-who { color: var(--ink-2); font-weight: 500; font-size: 12px; }
.msg-body { margin: 0; white-space: pre-wrap; line-height: 1.7; font-size: 14px; overflow-wrap: anywhere; }

.composer { margin-top: 6px; }
.composer textarea { min-height: 96px; }
.composer .btn { margin-top: 10px; }

/* ---------------------------------------------------------------- tree */

.tree-head h1 { font-family: var(--font-serif); font-weight: 500; }

.tree-letter {
  padding: 20px 22px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .5), transparent 55%),
    var(--warm-soft);
  margin-bottom: 16px;
}
.tree-sign {
  margin: 0 0 6px;
  color: var(--warm-strong);
  font-size: 12px;
  letter-spacing: .16em;
}
.tree-quote {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.tree-jumps { margin-bottom: 16px; }
.tree-form .fineprint { color: var(--warm-strong); }
.tree-form textarea { min-height: 160px; }

.thread-tree .msg-mine { background: var(--warm-soft); }

.code-warm .success-icon { background: var(--warm-soft); color: var(--warm-strong); }

.crisis-card {
  margin-top: 18px;
  padding: 17px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 13px;
  color: var(--ink-2);
}
.crisis-card h2 {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  margin-bottom: 7px;
  color: var(--warm-strong);
}
.crisis-card ul { margin: 0 0 8px; padding-left: 18px; line-height: 1.85; }
.crisis-card a { color: var(--warm-strong); font-weight: 500; }
.crisis-card .fineprint { margin-top: 8px; }

/* ---------------------------------------------------------------- inbox & admin */

.mail-list, .admin-list { display: flex; flex-direction: column; gap: 10px; }

.mail-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
}
.mail-row:hover { border-color: var(--border-strong); }
.mail-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.mail-excerpt { font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.mail-meta { color: var(--muted); font-size: 12px; }

.admin-row { padding: 16px 17px; }
.admin-row-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 7px;
}
.admin-row-title { font-size: 15px; font-weight: 500; line-height: 1.55; margin: 0 0 4px; }
.admin-row-meta { color: var(--muted); font-size: 12px; margin: 0; }
.admin-row-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}
.admin-row-actions form { margin: 0; }
.feedback-row { display: block; }
.feedback-row .admin-row-meta { margin-left: auto; }

.user-row { padding: 16px 17px; }
.user-row-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.user-name { font-size: 16px; margin-bottom: 2px; overflow-wrap: anywhere; }
.user-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.user-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}
.user-actions form { margin: 0; }

/* ---------------------------------------------------------------- auth */

.auth-page { background: var(--paper); }
.auth-wrap {
  max-width: 400px;
  margin: 26px auto 0;
}
.auth-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
}
.brand-mark-lg { width: 38px; height: 38px; border-radius: 12px; }
.auth-card { padding: 24px 22px; }
.auth-card h1 { font-size: 25px; margin-bottom: 5px; }
.auth-card > .muted { font-size: 13px; margin-bottom: 16px; }
.auth-card .stack { margin-top: 4px; }
.auth-card .btn { margin-top: 6px; }
.auth-alt { margin: 16px 0 0; text-align: center; font-size: 13px; color: var(--muted); }
.auth-alt a { color: var(--primary); }
.auth-foot {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.auth-foot a { color: var(--muted); }

/* ---------------------------------------------------------------- account */

.link-list { padding: 6px 8px; margin-bottom: 18px; }
.link-row {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 50px;
  padding: 6px 9px;
  border-radius: 11px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
}
.link-row:hover { background: var(--card-2); }
.link-row .quick-icon { width: 30px; height: 30px; }
.link-row .count-pill { margin-left: auto; }
.link-row > .icon { margin-left: auto; color: var(--muted); }
.link-row .count-pill + .icon { margin-left: 2px; }
.logout-row { margin-top: 16px; }

/* ---------------------------------------------------------------- prose & error */

.prose { max-width: 700px; }
.prose h2 { margin: 26px 0 8px; font-size: 17px; }
.prose p, .prose li { color: var(--ink-2); font-size: 14px; line-height: 1.85; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 4px; }
.prose .callout {
  margin: 18px 0;
  padding: 13px 15px;
  border-radius: 11px;
  background: var(--primary-soft);
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.8;
}

.error-page {
  max-width: 460px;
  margin: 40px auto;
  text-align: center;
}
.error-code {
  margin: 0;
  font-family: var(--font-code);
  font-size: 54px;
  line-height: 1;
  color: var(--primary);
  opacity: .5;
}
.error-page h1 { margin: 12px 0 8px; }
.error-page .btn { margin-top: 18px; }

/* ---------------------------------------------------------------- q&a */

.qa-list { display: flex; flex-direction: column; gap: 10px; }

.qa-card { display: block; color: inherit; text-decoration: none; }
.qa-card:hover { border-color: var(--border-strong); }
.qa-card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.qa-title { font-size: 16px; margin: 8px 0 5px; overflow-wrap: anywhere; }
.qa-excerpt { margin: 0 0 8px; color: var(--ink-2); font-size: 13px; line-height: 1.65; }
.qa-meta { margin: 0; color: var(--muted); font-size: 12px; }
.qa-article { margin-top: 4px; }
.qa-body { margin: 0; white-space: pre-wrap; line-height: 1.8; font-size: 15px; overflow-wrap: anywhere; }
.qa-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.qa-actions form { margin: 0; }

/* ---------------------------------------------------------------- resources */

.search-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 4px;
}
.search-row .field { flex: 1; margin-bottom: 0; }
.search-row .btn { flex: none; min-height: 44px; }

.resource-grid { display: grid; gap: 12px; }
.resource-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px;
}
.resource-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 11px;
  background: var(--primary-soft);
  color: var(--primary);
}
.resource-main { flex: 1; min-width: 0; }
.resource-title { margin: 0 0 5px; font-size: 15px; overflow-wrap: anywhere; }
.resource-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.resource-desc { margin: 4px 0 6px; color: var(--ink-2); font-size: 13px; line-height: 1.6; }
.resource-actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.resource-actions form { margin: 0; }
.status-badge.is-warn { background: var(--warm-soft); color: var(--warm-strong); }
.status-badge.is-rejected { background: var(--paper-2); color: var(--muted); text-decoration: line-through; }

input[type="file"] { padding: 9px 10px; font-size: 14px; }
input[type="file"]::file-selector-button {
  margin-right: 10px;
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--card-2);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

@media (min-width: 720px) {
  .resource-grid { grid-template-columns: 1fr 1fr; }
  .resource-card { flex-wrap: wrap; }
  .resource-card > .btn { align-self: center; }
  .resource-actions { width: 100%; justify-content: flex-end; }
}

/* ---------------------------------------------------------------- responsive */

@media (min-width: 760px) {
  .wrap { width: min(100% - 48px, 760px); }
  .top-nav { display: flex; }
  .tabbar { display: none; }
  .site-foot { padding-bottom: 24px; }
  .main { padding-top: 30px; padding-bottom: 48px; }
  .auth-page .main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block: 40px;
  }
  .auth-page .auth-wrap { margin-top: 0; margin-bottom: 20px; }
  h1 { font-size: 30px; }
  .field-grid { grid-template-columns: 1fr 1fr; }
  .user-actions { flex-direction: row; flex-wrap: wrap; align-items: flex-end; }
  .user-actions form { flex: 1 1 220px; }
  .quick-card { min-height: 126px; padding: 17px; }
}

@media (min-width: 1024px) {
  .app-header .wrap, .site-foot .wrap { width: min(100% - 64px, 1080px); }
  body.page-home .main { width: min(100% - 64px, 1080px); }
  .home-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    grid-template-areas:
      "lead side"
      "feed side";
    gap: 20px 30px;
    align-items: start;
  }
  .home-lead { display: block; grid-area: lead; }
  .home-side { display: block; grid-area: side; }
  .home-feed { display: block; grid-area: feed; }
  .home-grid .quick-grid { margin-top: 0; }
  .home-grid .transparency { margin-top: 16px; }
  .home-grid .section { margin-top: 0; }
  .home-grid .admin-strip { margin-top: 16px; }
}

@media (max-width: 380px) {
  .wrap { width: calc(100% - 24px); }
  .tool-user { max-width: 56px; }
  .brand-text { max-width: none; font-size: 13px; }
  .hero-title { font-size: 20px; }
  .code-value { font-size: 21px; letter-spacing: .08em; }
  .notice-title { font-size: 14px; }
  .quick-desc { font-size: 11px; }
  .quick-card { padding: 12px; min-height: 112px; }
  .header-inner { gap: 6px; }
  .tool-link, .tool-user { padding: 0 6px; }
  .tab { font-size: 10px; }
  .tab svg { width: 20px; height: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .app-header, .tabbar, .site-foot, .page-actions, .article-actions, .composer, .danger-zone { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; }
}