:root {
  --ink: #202124;
  --muted: #5f6368;
  --line: #d8dde3;
  --paper: #ffffff;
  --soft: #f5f7fa;
  --kr: #202124;
  --cn: #175cd3;
  --jp: #0b7a55;
  --note: #fff6d7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: #e9edf2;
  font-family: "Malgun Gothic", "Yu Gothic", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}
.page {
  width: 210mm;
  min-height: 297mm;
  margin: 16px auto;
  padding: 18mm 16mm;
  background: var(--paper);
  box-shadow: 0 4px 18px rgba(32,33,36,.12);
}
.day-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: end;
  border-bottom: 3px solid var(--ink);
  padding-bottom: 12px;
  margin-bottom: 18px;
}
h1 { margin: 0; font-size: 30px; letter-spacing: 0; }
.subtitle { color: var(--muted); font-size: 14px; margin-top: 4px; }
.badge { border: 1px solid var(--line); padding: 6px 10px; font-size: 13px; background: var(--soft); }
.summary-table { width: 100%; border-collapse: collapse; margin: 14px 0 20px; font-size: 12px; }
.summary-table th, .summary-table td { border: 1px solid var(--line); padding: 6px 7px; text-align: center; vertical-align: middle; }
.summary-table th { background: var(--soft); }
.kr { color: var(--kr); font-weight: 700; }
.cn { color: var(--cn); font-weight: 700; }
.jp { color: var(--jp); font-weight: 700; }
.char-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.char-block { border: 1px solid var(--line); padding: 10px; break-inside: avoid; }
.char-title { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.char-title .han { font-size: 34px; line-height: 1; }
.char-title .meaning { color: var(--muted); font-size: 13px; }
.meta { display: grid; grid-template-columns: 70px 1fr; gap: 4px 8px; font-size: 12px; }
.meta-label { color: var(--muted); }
.note { margin-top: 8px; padding: 7px 8px; background: var(--note); font-size: 12px; }
.practice { margin-top: 18px; border-top: 2px solid var(--line); padding-top: 12px; }
.practice ol { columns: 2; margin-top: 8px; }
.footer { margin-top: 18px; color: var(--muted); font-size: 11px; text-align: right; }
.index { width: 210mm; margin: 16px auto; padding: 18mm 16mm; background: #fff; }
.index a { display: block; padding: 8px 0; color: var(--cn); text-decoration: none; border-bottom: 1px solid var(--line); }
@media print {
  body { background: #fff; }
  .page, .index { margin: 0; box-shadow: none; width: auto; min-height: auto; page-break-after: always; }
}