:root {
  --bg: #f4f7f6;
  --card: #ffffff;
  --ink: #16211f;
  --ink-2: #4a5754;
  --ink-3: #6f7c79;
  --line: #dde5e3;
  --brand: #0f766e;
  --brand-ink: #ffffff;
  --brand-soft: #e3f3f0;
  --err: #b42318;
  --ok: #0f766e;
  --hint-bg: #fff7e6;
  --hint-line: #f2c46d;
  --c-child: #d97706;
  --c-elderly: #0f766e;
  --c-pregnant: #db2777;
  --c-vulnerable: #4f46e5;
  --c-student: #0284c7;
  --radius: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1614;
    --card: #17211f;
    --ink: #e7efed;
    --ink-2: #b3c1be;
    --ink-3: #8a9a96;
    --line: #2a3835;
    --brand: #2bb3a5;
    --brand-ink: #062521;
    --brand-soft: #16312d;
    --err: #ff8a80;
    --ok: #5eead4;
    --hint-bg: #2b2413;
    --hint-line: #7a6127;
    --c-child: #f5a524;
    --c-elderly: #2bb3a5;
    --c-pregnant: #f472b6;
    --c-vulnerable: #8b8cf6;
    --c-student: #38bdf8;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
  padding-inline: 16px;
}
a { color: var(--brand); }
small { font-size: 0.82em; }

.top, main, .foot { max-width: 560px; margin-inline: auto; }

.top { padding-block: 36px 20px; }
.eyebrow { margin: 0 0 6px; color: var(--brand); font-weight: 700; font-size: 15px; }
h1 { margin: 0; font-size: 30px; line-height: 1.25; letter-spacing: -0.02em; }
.lead { margin: 10px 0 0; color: var(--ink-2); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  margin-bottom: 16px;
}
h2 { margin: 0 0 14px; font-size: 20px; letter-spacing: -0.01em; }

/* 입력 */
.field-label { display: block; font-weight: 700; margin-bottom: 8px; }
#birth {
  width: 100%;
  font: inherit;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 12px 16px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  color: var(--ink);
  outline: none;
}
#birth:focus { border-color: var(--brand); background: var(--card); }
#birth[aria-invalid="true"] { border-color: var(--err); }
#birth::placeholder { color: var(--ink-3); font-weight: 500; letter-spacing: 0.02em; }
.birth-info { margin: 8px 2px 0; min-height: 1.6em; font-size: 15px; color: var(--ink-3); }
.birth-info.ok { color: var(--ok); font-weight: 700; }
.birth-info.err { color: var(--err); font-weight: 700; }

.opts { border: 0; margin: 22px 0 0; padding: 0; min-width: 0; }
.opts legend { float: left; width: 100%; font-weight: 700; padding: 0; margin-bottom: 10px; }
.opts legend + * { clear: both; }
.opts legend small { font-weight: 500; color: var(--ink-3); margin-left: 4px; }
.legend-sub { margin: -4px 0 12px; font-size: 15px; color: var(--ink-2); }
#historyBox { background: var(--brand-soft); border-radius: 12px; padding: 16px 14px 8px; }
.group-label { margin: 16px 0 8px; font-size: 14px; font-weight: 700; color: var(--ink-3); }

.opt {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 14px;
  margin-bottom: 8px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
  transition: border-color .15s, background-color .15s;
}
.opt input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--brand); }
.opt span { display: flex; flex-direction: column; font-weight: 600; }
.opt span small { font-weight: 400; color: var(--ink-3); }
.opt:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); }
.opt.flash { animation: flash 1.6s ease; }
@keyframes flash { 0%, 60% { border-color: var(--hint-line); box-shadow: 0 0 0 4px var(--hint-bg); } 100% { box-shadow: none; } }

.go {
  width: 100%;
  margin-top: 18px;
  padding: 16px;
  font: inherit;
  font-size: 19px;
  font-weight: 800;
  color: var(--brand-ink);
  background: var(--brand);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
}
.go:active { transform: translateY(1px); }
.privacy { margin: 10px 0 0; font-size: 13px; color: var(--ink-3); text-align: center; }

/* 결과 */
.result { scroll-margin-top: 12px; margin-bottom: 16px; }
.summary {
  background: var(--brand);
  color: var(--brand-ink);
  border-radius: var(--radius);
  padding: 22px 20px;
  margin-bottom: 12px;
}
.summary-label { margin: 0; font-size: 15px; font-weight: 700; opacity: .85; }
.summary-date { margin: 4px 0 2px; font-size: 28px; font-weight: 800; line-height: 1.3; letter-spacing: -0.02em; }
.summary-sub { margin: 0; font-size: 15px; opacity: .92; }
.summary-muted { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.summary-muted .summary-sub { color: var(--ink-2); opacity: 1; }

.hints { background: var(--hint-bg); border: 1px solid var(--hint-line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px; }
.hints-title { margin: 0 0 6px; font-weight: 800; }
.hints ul { margin: 0; padding: 0; list-style: none; }
.hint-btn {
  display: block; width: 100%; text-align: left;
  font: inherit; font-size: 15px; color: var(--ink);
  background: none; border: 0; padding: 6px 0 6px 22px; position: relative; cursor: pointer;
}
.hint-btn::before { content: "☐"; position: absolute; left: 0; top: 5px; color: var(--ink-3); }
.hint-btn:hover { text-decoration: underline; }

.prog {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent, var(--brand));
  border-radius: var(--radius);
  padding: 18px 18px 14px;
  margin-bottom: 12px;
}
.prog-child { --accent: var(--c-child); }
.prog-elderly { --accent: var(--c-elderly); }
.prog-pregnant { --accent: var(--c-pregnant); }
.prog-vulnerable { --accent: var(--c-vulnerable); }
.prog-student { --accent: var(--c-student); }
.prog header { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.prog h3 { margin: 0; font-size: 19px; margin-right: auto; }
.tag { font-size: 13px; font-weight: 700; color: var(--accent); border: 1.5px solid var(--accent); border-radius: 999px; padding: 1px 9px; }
.st { font-size: 13px; font-weight: 800; border-radius: 999px; padding: 2px 10px; }
.st-now { background: var(--ok); color: var(--brand-ink); }
.st-wait { background: var(--brand-soft); color: var(--brand); }
.st-over { background: var(--line); color: var(--ink-3); }
.period { margin: 10px 0 6px; font-size: 18px; }
.period strong { font-size: 21px; }
.nw { white-space: nowrap; }
.basis { margin: 0 0 10px; padding-left: 18px; color: var(--ink-2); font-size: 15px; }
.prog dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 15px; }
.prog dt { font-weight: 700; color: var(--ink-3); white-space: nowrap; }
.prog dd { margin: 0; }
.bring { margin: 0; padding-left: 18px; }
.notes { margin: 12px 0 0; padding: 10px 12px 10px 30px; background: var(--bg); border-radius: 10px; font-size: 14.5px; color: var(--ink-2); }
.extra-notes { margin: 0 0 12px; padding: 12px 14px 12px 32px; background: var(--card); border: 1px dashed var(--line); border-radius: 12px; font-size: 15px; color: var(--ink-2); }
.result-foot { margin: 4px 2px 0; font-size: 14px; color: var(--ink-3); }

/* 표 */
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 320px; }
th, td { text-align: left; vertical-align: top; padding: 10px 6px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--ink-3); font-weight: 700; }
td:first-child { font-weight: 700; }
td small { display: block; font-weight: 400; color: var(--ink-3); font-size: 12.5px; line-height: 1.45; margin-top: 2px; }
td:nth-child(2) { white-space: nowrap; color: var(--ink-2); }
td:nth-child(2) small { white-space: normal; }
td:last-child { white-space: nowrap; color: var(--brand); font-weight: 700; }
.table-notes, .check { margin: 14px 0 0; padding-left: 20px; font-size: 15px; color: var(--ink-2); }
.table-notes li, .check li { margin-bottom: 6px; }
.check { margin-top: 0; }

.share-row { text-align: center; margin: 8px 0 20px; }
.share {
  font: inherit; font-weight: 700; font-size: 16px;
  color: var(--brand); background: var(--card);
  border: 1.5px solid var(--brand); border-radius: 999px;
  padding: 10px 22px; cursor: pointer;
}
.foot { padding-block: 8px 40px; font-size: 13px; color: var(--ink-3); }
.foot p { margin: 0 0 6px; }

@media (max-width: 380px) {
  h1 { font-size: 26px; }
  .card { padding: 18px 16px; }
  .summary-date { font-size: 24px; }
  td:last-child { white-space: normal; }
}