:root {
  --page: #f7f6f3; --card: #fff; --raised: #f1efea; --hairline: rgba(31, 27, 22, .08); --hairline-strong: rgba(31, 27, 22, .16);
  --text: #1f1b16; --text-2: #5e554a; --ink: #1f5f50; --ink-soft: #e9f0ec; --danger: #b42318; --danger-soft: #fdeeec;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; font-size: 16px; line-height: 1.45; color: var(--text); background: var(--page);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--page); }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 22px; font-weight: 600; line-height: 1.25; }
h2 { font-size: 18px; font-weight: 600; }
h3 { margin: 20px 0 8px; color: var(--text-2); font-size: 13px; font-weight: 600; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; color: #fff; background: #17352d; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand div { display: grid; }
.brand span:not(.mark) { color: rgba(255, 255, 255, .75); font-size: 13px; }
.mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 9px; color: #17352d; background: #fff; font-weight: 700; font-size: 14px; }
.top .quiet { border-color: rgba(255, 255, 255, .35); color: #fff; background: transparent; }
main { width: 100%; max-width: 640px; margin: 0 auto; padding: 20px 16px 32px; flex: 1; display: grid; gap: 16px; align-content: start; }
.card { border: 1px solid var(--hairline); border-radius: 14px; padding: 20px; background: var(--card); }
#login { display: grid; gap: 12px; margin-top: 12px; }
form { display: grid; gap: 14px; margin-top: 4px; }
label { display: grid; gap: 6px; color: var(--text-2); font-size: 14px; }
input:not([type=checkbox]) { width: 100%; min-height: 48px; border: 1px solid var(--hairline-strong); border-radius: 10px; padding: 10px 12px; color: var(--text); background: #fff; font-size: 18px; letter-spacing: .06em; }
input:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
label.check { display: flex; align-items: center; gap: 10px; font-size: 14px; }
label.check input { width: 20px; height: 20px; }
.primary { min-height: 48px; border: 0; border-radius: 10px; padding: 10px 18px; color: #fff; background: var(--ink); font-weight: 600; }
.primary:disabled { opacity: .6; }
.quiet { min-height: 40px; border: 1px solid var(--hairline-strong); border-radius: 10px; padding: 6px 14px; background: var(--card); }
.muted { color: var(--text-2); }
.small { font-size: 13px; }
.error { border-radius: 10px; padding: 10px 12px; color: var(--danger); background: var(--danger-soft); font-size: 14px; }
.intro { display: grid; gap: 4px; }
.child-head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.due { display: grid; text-align: right; }
.due span { color: var(--text-2); font-size: 13px; }
.due strong { color: var(--danger); font-size: 22px; font-variant-numeric: tabular-nums; }
.due.is-paid strong { color: var(--ink); }
.rows { margin: 0; padding: 0; list-style: none; }
.rows li { display: flex; justify-content: space-between; align-items: center; gap: 12px; border-top: 1px solid var(--hairline); padding: 10px 0; }
.rows li > div { display: grid; gap: 2px; }
.rows small { font-size: 13px; }
.rows .num { text-align: right; font-variant-numeric: tabular-nums; }
.rows li.is-cancelled span { text-decoration: line-through; color: var(--text-2); }
.late { color: var(--danger); }
.bar { display: flex; justify-content: space-between; gap: 12px; }
.sheet { display: grid; gap: 14px; }
.sheet-head { display: flex; justify-content: space-between; gap: 12px; border-bottom: 2px solid var(--ink); padding-bottom: 10px; }
.sheet-head div { display: grid; }
.sheet-title { text-align: right; }
.sheet-title strong { color: var(--ink); }
.sheet-student { font-weight: 600; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { border-bottom: 1px solid var(--hairline-strong); padding: 6px; color: var(--text-2); font-size: 12px; font-weight: 500; text-align: left; }
td { border-bottom: 1px solid var(--hairline); padding: 6px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.strong { font-weight: 600; }
.results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 16px; margin: 0; border-radius: 10px; padding: 12px; background: var(--ink-soft); }
.results dt { color: var(--text-2); font-size: 12px; }
.results dd { margin: 0; font-weight: 600; }
.remark { display: grid; gap: 4px; border: 1px solid var(--hairline-strong); border-radius: 10px; padding: 10px 12px; }
.foot { padding: 16px; color: var(--text-2); font-size: 12px; text-align: center; }
@media print {
  .top, .bar, .foot { display: none; }
  body, main { background: #fff; }
  main { max-width: none; padding: 0; }
  .card { border: 0; padding: 0; }
}

.notices { display: grid; gap: 12px; border-color: rgba(31, 95, 80, .35); background: var(--ink-soft); }
.notice-item { display: grid; gap: 2px; border-top: 1px solid var(--hairline-strong); padding-top: 10px; }
.notice-item:first-of-type { border-top: 0; padding-top: 0; }
.notice-body { white-space: pre-line; }