:root {
  --ink: #16202b;
  --ink-soft: #4c5a6a;
  --line: #d7dee7;
  --bg: #f6f8fb;
  --card: #ffffff;
  --brand: #123c69;
  --brand-soft: #e8eef7;
  --warn: #8a4b00;
  --warn-bg: #fff4e0;
  --danger: #a4262c;
  --ok: #1d6b3f;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  overflow-wrap: anywhere;
}

a { color: var(--brand); }
a:hover { text-decoration-thickness: 2px; }

.chrome { background: var(--brand); color: #fff; }
.chrome a { color: #fff; text-decoration: none; }
.chrome .in { max-width: 940px; margin: 0 auto; padding: 10px 16px; display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
.chrome .brand { font-weight: 700; margin-right: auto; }
.chrome nav a { padding: 4px 0; border-bottom: 2px solid transparent; font-size: 15px; }
.chrome nav a[aria-current="page"] { border-bottom-color: #fff; }

main { max-width: 940px; margin: 0 auto; padding: 18px 16px 40px; }

h1 { font-size: clamp(1.35rem, 4vw, 1.9rem); line-height: 1.35; margin: 8px 0 6px; }
h2 { font-size: 1.15rem; margin: 26px 0 10px; }
h3 { font-size: 1rem; margin: 18px 0 8px; }
.updated { color: var(--ink-soft); font-size: 0.85rem; margin: 0 0 14px; }
.lead { font-size: 1.02rem; color: var(--ink-soft); }

.onboard { display: grid; gap: 6px; background: var(--brand-soft); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 16px 0; }
.onboard p { margin: 0; font-size: 0.95rem; }

.tool-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 16px 0; }
.tool-card h2 { margin-top: 0; }

label { display: block; font-size: 0.86rem; color: var(--ink-soft); margin: 10px 0 4px; }
input, select, button, textarea { font: inherit; }
input[type="date"], input[type="number"], input[type="search"], select {
  width: 100%;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid #7aa7d9; outline-offset: 2px; }

.rows { display: grid; gap: 10px; margin: 8px 0; }
.vrow { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 10px; border: 1px dashed var(--line); border-radius: 10px; padding: 10px; background: #fbfcfe; }
.vrow > label:nth-child(3) { grid-column: 1 / 2; }
.vrow .chk { display: flex; align-items: center; gap: 6px; margin: 0; font-size: 0.9rem; }
.vrow .chk input { width: auto; }
.vrow button { align-self: end; justify-self: start; }

@media (min-width: 760px) {
  .vrow { grid-template-columns: 150px minmax(0, 2.2fr) 90px auto auto auto; align-items: end; }
  .vrow > label:nth-child(3) { grid-column: auto; }
}

.form-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
button, .cta {
  border: 1px solid var(--brand);
  background: #fff;
  color: var(--brand);
  border-radius: 8px;
  padding: 9px 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-size: 0.95rem;
}
button.primary, .cta.primary { background: var(--brand); color: #fff; }
button.secondary, .cta.secondary { background: var(--brand-soft); border-color: var(--brand-soft); }
button.ghost { border-color: var(--line); color: var(--ink-soft); }
button[aria-pressed="true"] { background: var(--brand); color: #fff; border-color: var(--brand); }

details.advanced { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 10px; }
details.advanced summary { cursor: pointer; font-weight: 600; }
.adv-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 620px) { .adv-grid { grid-template-columns: 1fr 1fr; } }
fieldset.toggles { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin: 12px 0 0; }
fieldset.toggles legend { font-size: 0.86rem; color: var(--ink-soft); padding: 0 4px; }
fieldset.toggles label { display: flex; gap: 8px; align-items: flex-start; font-size: 0.92rem; color: var(--ink); margin: 6px 0; }
fieldset.toggles input { margin-top: 4px; }

.cards { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin: 14px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: grid; gap: 2px; }
.card .k { font-size: 0.82rem; color: var(--ink-soft); }
.card strong { font-size: 1.5rem; line-height: 1.2; }
.card .u { font-size: 0.9rem; color: var(--ink-soft); }
.card .sub { font-size: 0.76rem; color: var(--ink-soft); }

.gauge { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 16px 0; }
.gauge h2 { margin-top: 0; }
.gauge-row { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto; gap: 6px 10px; align-items: center; margin: 8px 0; font-size: 0.9rem; }
.gauge-row .gauge-left { grid-column: 2 / 4; color: var(--ink-soft); font-size: 0.8rem; }
.gauge-label { font-weight: 700; }
.gauge-bar { background: #e9eef4; border-radius: 999px; height: 10px; overflow: hidden; }
.gauge-fill { display: block; height: 100%; background: var(--brand); }
.gauge-fill.hit { background: var(--danger); }
.gauge-left.hit { color: var(--danger); font-weight: 700; }

.expiry { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 16px 0; }
.expiry h2 { margin-top: 0; }
.dday { display: inline-block; background: var(--brand-soft); border-radius: 999px; padding: 2px 10px; font-size: 0.86rem; font-weight: 700; }

.flags { background: var(--warn-bg); border: 1px solid #f0d9b0; border-radius: 10px; padding: 10px 12px 10px 30px; margin: 14px 0; color: var(--warn); }
.steps { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px 10px 30px; margin: 10px 0; font-size: 0.92rem; }

.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 16px 0; }
.tile { display: grid; gap: 4px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; text-decoration: none; color: var(--ink); }
.tile strong { color: var(--brand); }
.tile span { font-size: 0.88rem; color: var(--ink-soft); }

.tw { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 10px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
caption { text-align: left; padding: 8px 10px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--brand-soft); font-size: 0.82rem; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
td.no { color: var(--ink-soft); white-space: nowrap; }
#point-table { min-width: 600px; }
#accident-table, #failure-table, #cancel-table, #cancel-thresholds { min-width: 440px; }
#reduction-table { min-width: 700px; }
#reduction-table td:nth-child(2) { min-width: 170px; }
#reduction-table th:nth-child(1), #reduction-table th:nth-child(2) { white-space: nowrap; }
#point-table th[scope="row"] { min-width: 210px; }
#point-table th:nth-child(4), #point-table td:nth-child(4) { white-space: nowrap; min-width: 56px; text-align: center; }
#point-table th:nth-child(1), #point-table td:nth-child(1) { white-space: nowrap; }
.scroll-hint { display: none; }
@media (max-width: 640px) { .scroll-hint { display: block; } }
.small { font-size: 0.8rem; }
.muted { color: var(--ink-soft); }
.badge { display: inline-block; font-size: 0.72rem; border: 1px solid #e0b46a; background: #fff6e6; color: #7a4d00; border-radius: 999px; padding: 1px 8px; margin-left: 4px; white-space: nowrap; }

.tool-err { color: var(--danger); font-size: 0.88rem; min-height: 0; margin: 6px 0; }
.result-line { font-size: 0.92rem; color: var(--ink-soft); }
.notice { background: var(--brand-soft); border-radius: 10px; padding: 10px 12px; font-size: 0.85rem; color: var(--ink-soft); margin: 16px 0; }
.warn { background: var(--warn-bg); border: 1px solid #f0d9b0; border-radius: 10px; padding: 10px 12px; font-size: 0.9rem; color: var(--warn); }
.example { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 10px; padding: 10px 14px; margin: 12px 0; }
.example p { margin: 6px 0; }
ul.check { padding-left: 20px; }
ul.check li { margin: 5px 0; }
ul.links { padding-left: 20px; }
ul.links li { margin: 5px 0; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin: 8px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--ink-soft); }
.sources ul, footer ul { padding-left: 18px; }
footer .in { max-width: 940px; margin: 0 auto; padding: 18px 16px 28px; display: grid; gap: 12px; }
footer h2 { font-size: 0.85rem; margin: 0 0 4px; text-transform: none; opacity: 0.85; }
footer ul { margin: 0; columns: 2; column-gap: 18px; font-size: 0.85rem; }
footer li { margin: 3px 0; break-inside: avoid; }
footer .disc { font-size: 0.8rem; margin: 0; opacity: 0.92; }
footer a { text-decoration: underline; }

@media print {
  .chrome, .tool-card form, .tool-card details, .form-actions, .grid, .related, footer, .onboard, .updated { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  main { max-width: none; padding: 0; }
  .card, .gauge, .expiry, .tw { break-inside: avoid; border-color: #999; }
  .notice { border: 1px solid #999; background: #fff; }
  a[href]::after { content: ""; }
}