* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; background: #f4f6f9; color: #1f2329; }
header { background: #1f2a44; color: #fff; padding: 16px 20px; }
header h1 { margin: 0; font-size: 17px; }
header .muted { color: #9fb0d0; font-size: 12px; }
main { max-width: 760px; margin: 16px auto 40px; padding: 0 14px; }
.card { background: #fff; border-radius: 10px; padding: 16px 18px; margin-bottom: 14px; box-shadow: 0 1px 3px rgba(0,0,0,.07); }
h3 { font-size: 15px; margin: 0 0 10px; }
h4 { font-size: 13px; margin: 16px 0 6px; color: #374151; }
label { display: block; font-size: 13px; margin: 10px 0; color: #374151; }
input { width: 100%; padding: 9px 10px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 14px; margin-top: 4px; }
button { padding: 9px 16px; border-radius: 6px; border: 1px solid #d1d5db; background: #fff; cursor: pointer; font-size: 14px; }
button.primary { background: #2b5cff; border-color: #2b5cff; color: #fff; width: 100%; margin-top: 12px; }
.link { border: none; background: none; color: #2b5cff; }
.row { display: flex; gap: 8px; align-items: center; }
.spread { justify-content: space-between; }
.tabs { display: flex; gap: 8px; margin-bottom: 8px; }
.tabs button.active { background: #1f2a44; color: #fff; border-color: #1f2a44; }
.hint { font-size: 12px; color: #8a94a6; }
.err { color: #c0392b; font-size: 13px; }
.muted { color: #8a94a6; font-size: 13px; }
.kid-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px,1fr)); gap: 10px; }
.kid { border: 1px solid #e5e7eb; border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.kid.active { border-color: #2b5cff; background: #eef3ff; }
.kid b { display: block; font-size: 14px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px,1fr)); gap: 10px; }
.stat { background: #fafbfc; border-radius: 8px; padding: 10px 12px; }
.stat .n { font-size: 20px; font-weight: 600; }
.stat .l { font-size: 12px; color: #8a94a6; }
.badge { display: inline-block; background: #fff7e6; color: #b45309; border-radius: 12px; padding: 3px 10px; font-size: 12px; margin: 2px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid #eef1f5; }
th { color: #6b7280; font-size: 12px; font-weight: 500; }