:root {
  --blue: #1a56db;
  --green: #0e9f6e;
  --amber: #d97706;
  --red: #e02424;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
}
.topbar {
  background: var(--blue); color: white; padding: 20px 16px 16px;
  position: sticky; top: 0; z-index: 5;
}
.topbar h1 { margin: 0; font-size: 1.3rem; }
.topbar .subtitle { margin: 4px 0 0; font-size: 0.8rem; opacity: 0.85; }

main { max-width: 720px; margin: 0 auto; padding: 16px; padding-bottom: 60px; }

.card {
  background: var(--card); border-radius: 12px; padding: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08); margin-bottom: 16px;
}
.field { margin-bottom: 14px; position: relative; }
.field label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 6px; }
.field input[type=text], .field input[type=number], .field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 1rem; background: #fafbfc;
}
.field select[multiple] { height: auto; }

.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg button {
  flex: 1; min-width: 70px; padding: 9px 8px; border: 1px solid var(--border); border-radius: 8px;
  background: #fafbfc; color: var(--text); font-size: 0.9rem;
}
.seg button.active { background: var(--blue); color: white; border-color: var(--blue); }

.primary-btn {
  width: 100%; padding: 13px; border: none; border-radius: 10px; background: var(--blue);
  color: white; font-size: 1.05rem; font-weight: 600;
}
.primary-btn:disabled { opacity: 0.6; }

.suggest-list {
  position: absolute; top: 100%; left: 0; right: 0; background: white; border: 1px solid var(--border);
  border-radius: 8px; max-height: 220px; overflow-y: auto; z-index: 10; box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.suggest-item { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.suggest-item:last-child { border-bottom: none; }
.suggest-item b { color: var(--blue); }

.status-box {
  background: #fff7e6; border: 1px solid #fde68a; border-radius: 10px; padding: 12px 14px;
  margin-bottom: 12px; font-size: 0.9rem; color: #92400e;
}

.tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tab-btn {
  flex: 1; padding: 10px; border-radius: 10px; border: 1px solid var(--border); background: white;
  font-size: 0.95rem; font-weight: 600;
}
.tab-btn .count { font-weight: 400; color: var(--muted); margin-left: 4px; }
.tab-btn.active { border-color: var(--blue); color: var(--blue); background: #eef2ff; }

.results { display: flex; flex-direction: column; gap: 10px; }
.result-card {
  background: var(--card); border-radius: 12px; padding: 14px; box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border-left: 4px solid var(--border);
}
.result-card.tier-保 { border-left-color: var(--green); }
.result-card.tier-稳 { border-left-color: var(--blue); }
.result-card.tier-冲 { border-left-color: var(--amber); }
.rc-top { display: flex; justify-content: space-between; align-items: baseline; }
.rc-school { font-weight: 700; font-size: 1.05rem; }
.rc-tag { font-size: 0.7rem; color: white; padding: 2px 6px; border-radius: 4px; margin-left: 6px; }
.rc-tag.tier-保 { background: var(--green); }
.rc-tag.tier-稳 { background: var(--blue); }
.rc-tag.tier-冲 { background: var(--amber); }
.rc-prob { font-size: 1.1rem; font-weight: 700; }
.rc-sub { color: var(--muted); font-size: 0.85rem; margin-top: 4px; }
.rc-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; font-size: 0.8rem; color: var(--muted); }
.rc-conf-low { color: var(--red); font-weight: 600; }

.empty-hint { text-align: center; color: var(--muted); padding: 30px 10px; font-size: 0.9rem; }

.sheet { position: fixed; inset: 0; z-index: 20; }
.sheet-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.4); }
.sheet-body {
  position: absolute; left: 0; right: 0; bottom: 0; max-height: 85vh; overflow-y: auto;
  background: white; border-radius: 16px 16px 0 0; padding: 16px; padding-bottom: 30px;
}
.sheet-close {
  display: block; margin: 0 0 10px auto; background: #f1f3f5; border: none; border-radius: 8px;
  padding: 6px 12px; font-size: 0.85rem;
}
.detail-section { margin-bottom: 16px; }
.detail-section h3 { font-size: 0.95rem; margin: 0 0 8px; }
table.year-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
table.year-table th, table.year-table td { padding: 6px 4px; border-bottom: 1px solid var(--border); text-align: left; }
.evidence-item { font-size: 0.78rem; color: var(--muted); background: #f8f9fb; border-radius: 6px; padding: 6px 8px; margin-bottom: 4px; word-break: break-all; }
.disclaimer { font-size: 0.78rem; color: var(--red); background: #fef2f2; border-radius: 8px; padding: 8px 10px; }

footer { text-align: center; color: var(--muted); font-size: 0.72rem; padding: 20px 16px 40px; }

[hidden] { display: none !important; }