:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --ink: #1c2733;
  --muted: #6b7785;
  --line: #e4e7ec;
  --brand: #1f3a5f;
  --brand-2: #2f6fb0;
  --accent: #c0392b;
  --ok: #1e8e5a;
  --chip: #eef2f7;
  --radius: 12px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom);
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 14px 40px; }

/* Header */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--brand); color: #fff;
  padding: calc(env(safe-area-inset-top) + 12px) 14px 12px;
  display: flex; align-items: center; gap: 10px;
}
.topbar h1 { font-size: 17px; margin: 0; font-weight: 600; flex: 1; line-height: 1.3; }
.topbar .sub { font-size: 12px; opacity: .8; font-weight: 400; }
.back-btn, .ghost-btn {
  background: rgba(255,255,255,.15); color: #fff; border: none;
  padding: 8px 12px; border-radius: 8px; font-size: 14px; cursor: pointer;
}
.ghost-btn.dark { background: var(--chip); color: var(--brand); }

/* Login */
.login { max-width: 360px; margin: 18vh auto 0; padding: 0 20px; text-align: center; }
.login h2 { color: var(--brand); }
.login input {
  width: 100%; padding: 14px; font-size: 17px; border: 1px solid var(--line);
  border-radius: 10px; margin: 14px 0; text-align: center;
}
.btn {
  display: inline-block; width: 100%; padding: 14px; font-size: 16px;
  background: var(--brand); color: #fff; border: none; border-radius: 10px;
  cursor: pointer; font-weight: 600;
}
.btn.sm { width: auto; padding: 9px 14px; font-size: 14px; }
.btn.outline { background: #fff; color: var(--brand); border: 1px solid var(--brand-2); }
.btn.danger { background: #fff; color: var(--accent); border: 1px solid #e6b7b1; }
.err { color: var(--accent); font-size: 14px; min-height: 20px; }

/* University list */
.uni-card {
  background: var(--card); border-radius: var(--radius); padding: 14px;
  margin: 12px 0; box-shadow: 0 1px 3px rgba(0,0,0,.06); cursor: pointer;
  display: flex; align-items: center; gap: 12px;
}
.uni-card .name { font-size: 17px; font-weight: 600; }
.uni-card .meta { color: var(--muted); font-size: 13px; margin-top: 3px; }
.uni-card .arrow { color: var(--muted); font-size: 22px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip {
  background: var(--chip); color: var(--brand); border-radius: 20px;
  padding: 3px 10px; font-size: 12px; white-space: nowrap;
}
.chip.ref { background: #e7f3ec; color: var(--ok); }
.chip.sel { background: #eaf1fb; color: var(--brand-2); }
.chip.q { background: #fdeeea; color: var(--accent); }
.chip.warn { background: #fff4e0; color: #a9650a; }

.section-title { font-size: 13px; color: var(--muted); margin: 18px 4px 6px; font-weight: 600; }
.searchbar { margin: 12px 0; }
.searchbar input { width: 100%; padding: 11px 14px; font-size: 15px; border: 1px solid var(--line); border-radius: 10px; }

/* Tabs */
.tabs {
  display: flex; background: var(--card); border-radius: var(--radius);
  padding: 4px; margin: 12px 0; position: sticky; top: 64px; z-index: 10;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.tabs button {
  flex: 1; padding: 10px 4px; border: none; background: transparent;
  font-size: 14px; color: var(--muted); border-radius: 8px; cursor: pointer;
}
.tabs button.active { background: var(--brand); color: #fff; font-weight: 600; }

/* Group / major cards */
.group {
  background: var(--card); border-radius: var(--radius); margin: 12px 0;
  overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.group-head {
  padding: 13px 14px; display: flex; align-items: center; gap: 10px; cursor: pointer;
  border-left: 4px solid var(--line);
}
.group-head.on { border-left-color: var(--brand-2); }
.group-code { font-weight: 700; font-size: 16px; color: var(--brand); }
.group-info { flex: 1; }
.group-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.caret { color: var(--muted); transition: transform .15s; }
.caret.open { transform: rotate(90deg); }
.group-note { font-size: 12px; color: #8a6d3b; background: #fcf8ef; padding: 6px 14px; }

.major {
  padding: 11px 14px; border-top: 1px solid var(--line);
  display: flex; gap: 10px; align-items: flex-start;
}
.major.picked { background: #f5f9ff; }
.major .body { flex: 1; min-width: 0; }
.major .mname { font-size: 15px; font-weight: 500; }
.major .mcode { color: var(--brand-2); font-weight: 600; font-size: 13px; margin-right: 4px; }
.major .mmeta { font-size: 12px; color: var(--muted); margin-top: 3px; }
.major .mnote { font-size: 12px; color: #8a6d3b; margin-top: 3px; }
.pick {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 8px; border: 1.5px solid var(--line);
  background: #fff; color: var(--muted); font-size: 18px; cursor: pointer; line-height: 1;
}
.pick.on { background: var(--brand-2); border-color: var(--brand-2); color: #fff; }

.ref-fields { margin-top: 8px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ref-fields .full { grid-column: 1 / -1; }
.ref-fields input, .ref-fields textarea, .qbox textarea, .qbox input {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit;
}
.fld-label { font-size: 11px; color: var(--muted); margin-bottom: 2px; }

/* selections summary */
.summary { background: #eaf1fb; border-radius: var(--radius); padding: 12px 14px; margin: 12px 0; }
.summary h3 { margin: 0 0 8px; font-size: 14px; color: var(--brand); }
.sum-item { font-size: 14px; padding: 4px 0; border-top: 1px dashed #c9d9f0; }
.sum-item:first-of-type { border-top: none; }
.sum-item .s-score { color: var(--accent); font-weight: 600; }

/* Q&A */
.qbox { background: var(--card); border-radius: var(--radius); padding: 12px 14px; margin: 12px 0; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.qadd { display: flex; flex-direction: column; gap: 8px; }
.q-card {
  background: var(--card); border-radius: var(--radius); padding: 12px 14px; margin: 10px 0;
  box-shadow: 0 1px 3px rgba(0,0,0,.06); border-left: 4px solid var(--brand-2);
}
.q-card.asked { border-left-color: var(--ok); opacity: .92; }
.q-card .q-row { display: flex; gap: 8px; align-items: flex-start; }
.q-card .q-text { flex: 1; font-weight: 600; font-size: 15px; }
.q-card .q-meta { font-size: 11px; color: var(--muted); margin-top: 4px; display: flex; gap: 10px; align-items: center; }
.q-card textarea { width: 100%; margin-top: 8px; min-height: 64px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-family: inherit; }
.tag-prep { background: var(--chip); color: var(--brand); border-radius: 12px; padding: 1px 8px; }
.tag-live { background: #fdeeea; color: var(--accent); border-radius: 12px; padding: 1px 8px; }
.icon-btn { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; padding: 2px 6px; }
.seg { display: flex; gap: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { flex: 1; padding: 8px; border: none; background: #fff; font-size: 13px; color: var(--muted); cursor: pointer; }
.seg button.on { background: var(--brand); color: #fff; }

/* Markdown (2025 ref) */
.md { background: var(--card); border-radius: var(--radius); padding: 14px; margin: 12px 0; box-shadow: 0 1px 3px rgba(0,0,0,.06); overflow-x: auto; }
.md h1 { font-size: 19px; } .md h2 { font-size: 17px; color: var(--brand); margin-top: 18px; }
.md h3 { font-size: 15px; } .md p { margin: 8px 0; }
.md blockquote { border-left: 3px solid var(--line); margin: 8px 0; padding: 2px 12px; color: var(--muted); font-size: 14px; }
.md table { border-collapse: collapse; width: 100%; font-size: 13px; margin: 10px 0; }
.md th, .md td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; white-space: nowrap; }
.md th { background: var(--chip); color: var(--brand); }
.md hr { border: none; border-top: 1px solid var(--line); margin: 14px 0; }
.md ul { padding-left: 20px; }

/* 去年分数选择器 */
.ref-toggle { margin-top: 8px; background: #eef4fb; color: var(--brand-2); border: 1px dashed #b9d2ef; border-radius: 8px; padding: 7px 10px; font-size: 13px; cursor: pointer; width: 100%; text-align: left; }
.rp-none { font-size: 12px; color: var(--muted); padding: 8px 2px; }
.refpick { margin-top: 8px; border: 1px solid var(--line); border-radius: 8px; padding: 8px; background: #fafbfc; }
.rp-search { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; margin-bottom: 6px; }
.rp-list { max-height: 230px; overflow-y: auto; }
.rp-item { display: block; width: 100%; text-align: left; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; margin-bottom: 6px; cursor: pointer; }
.rp-item:active { background: #eef4fb; }
.rp-top { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.rp-name { font-size: 13px; font-weight: 600; color: var(--ink); }
.rp-sc { font-size: 13px; color: var(--accent); font-weight: 700; white-space: nowrap; }
.rp-cat { font-size: 11px; color: var(--muted); margin-top: 2px; line-height: 1.4; }

.plan-hint { font-size: 12px; color: var(--muted); background: var(--card); border-radius: 10px; padding: 9px 12px; margin: 12px 0; }
.plan-hint b { color: var(--brand-2); }

/* 咨询台两栏 */
.desk { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 620px) { .desk { grid-template-columns: 1fr 1fr; align-items: start; } }
.pane { min-width: 0; }
.pane-h { position: sticky; top: 64px; background: var(--bg); margin: 4px 0 8px; padding: 6px 2px; font-size: 14px; color: var(--brand); z-index: 5; }
.sel-card { background: var(--card); border-radius: var(--radius); padding: 10px 12px; margin: 10px 0; box-shadow: 0 1px 3px rgba(0,0,0,.06); border-left: 4px solid var(--brand-2); }
.sel-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.sel-title { font-size: 14px; font-weight: 600; }
.watched { margin-top: 10px; font-size: 13px; color: var(--muted); }
.watched b { cursor: pointer; color: var(--accent); margin-left: 2px; }
.empty.sm { padding: 22px 14px; }

.empty { text-align: center; color: var(--muted); padding: 40px 20px; font-size: 14px; }
.loading { text-align: center; color: var(--muted); padding: 40px; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: rgba(28,39,51,.92); color: #fff; padding: 10px 18px; border-radius: 22px;
  font-size: 14px; z-index: 100; opacity: 0; transition: opacity .2s; pointer-events: none;
}
.toast.show { opacity: 1; }