/* ==========================================================================
   재테크 계산기 — 디자인 토큰
   컨셉: 은행 통장(passbook) · 장부(ledger). 계산 결과가 "통장에 찍히는 도장"처럼
   보이도록 구성.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@500;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap');
@font-face {
  font-family: 'Pretendard';
  src: url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/woff2/Pretendard-Regular.woff2') format('woff2');
  font-weight: 400;
}
@font-face {
  font-family: 'Pretendard';
  src: url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/woff2/Pretendard-Medium.woff2') format('woff2');
  font-weight: 500;
}
@font-face {
  font-family: 'Pretendard';
  src: url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/woff2/Pretendard-Bold.woff2') format('woff2');
  font-weight: 700;
}

:root {
  /* Color */
  --paper: #F2F4F0;
  --paper-card: #FFFFFF;
  --ink: #14231C;
  --ink-soft: #4B5A52;
  --line: #D8DED6;
  --green: #1F6F54;
  --green-deep: #123D2E;
  --gold: #B8862E;
  --stamp: #B23A2E;

  /* Type */
  --font-display: 'Noto Serif KR', serif;
  --font-body: 'Pretendard', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 3px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; }

/* ---------- Layout shell ---------- */
.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand .seal {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1.5px solid var(--stamp);
  color: var(--stamp);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 13px;
  transform: rotate(-8deg);
  flex-shrink: 0;
}
.site-nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--ink-soft);
}
.site-nav a:hover { color: var(--green); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 64px;
  padding: 28px 0 40px;
  font-size: 13px;
  color: var(--ink-soft);
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.site-footer a { margin-right: 14px; }
.site-footer a:hover { color: var(--green); }

/* ---------- Hero (home) ---------- */
.hero {
  padding: 56px 0 28px;
  border-bottom: 1px dashed var(--line);
}
.hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.25;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}
.hero p {
  color: var(--ink-soft);
  font-size: 16px;
  max-width: 46em;
  margin: 0;
}

/* ---------- Category accordion (home) ---------- */
.category-list {
  margin: 36px 0 56px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.category {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-card);
  overflow: hidden;
}
.category[open] {
  border-color: var(--seal-color, var(--green));
}
.category summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.category summary::-webkit-details-marker { display: none; }
.category summary:hover { background: rgba(31,111,84,0.04); }
.cat-accent {
  width: 4px;
  align-self: stretch;
  border-radius: 2px;
  background: var(--seal-color, var(--stamp));
  flex-shrink: 0;
}
.cat-info { flex: 1; min-width: 0; }
.cat-title { font-weight: 700; font-size: 16.5px; color: var(--ink); }
.cat-desc { font-size: 12.5px; color: var(--ink-soft); margin-top: 3px; word-break: keep-all; overflow-wrap: break-word; }
.cat-chevron {
  font-family: var(--font-mono);
  color: var(--ink-soft);
  font-size: 15px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.category[open] .cat-chevron { transform: rotate(180deg); }
.cat-items {
  border-top: 1px dashed var(--line);
  padding: 4px 20px 6px;
}
.cat-items .ledger-row:last-child { border-bottom: none; }
.cat-red { --seal-color: var(--stamp); }
.cat-green { --seal-color: var(--green); }
.cat-blue { --seal-color: #2C5985; }
.cat-gold { --seal-color: var(--gold); }


.ledger {
  margin: 36px 0 56px;
}
.ledger-group + .ledger-group { margin-top: 34px; }
.ledger-group-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.ledger-group-title::after {
  content: "";
  flex: 1;
  border-bottom: 1px dashed var(--line);
}
.ledger-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.15s ease, background 0.15s ease;
}
.ledger-row:hover {
  padding-left: 10px;
  background: rgba(31,111,84,0.045);
}
.ledger-row .num {
  font-family: var(--font-mono);
  color: var(--ink-soft);
  font-size: 13px;
  width: 28px;
  flex-shrink: 0;
}
.ledger-row .title {
  flex: 1;
  font-weight: 600;
  font-size: 16.5px;
}
.ledger-row .desc {
  color: var(--ink-soft);
  font-size: 13.5px;
  display: block;
  font-weight: 400;
  margin-top: 3px;
}
.ledger-row .arrow {
  font-family: var(--font-mono);
  color: var(--green);
  font-size: 16px;
  margin-left: 16px;
  flex-shrink: 0;
}

/* ---------- Calculator page ---------- */
.calc-header {
  padding: 40px 0 22px;
}
.calc-header .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.calc-header h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 34px);
  margin: 0 0 10px;
}
.calc-header p {
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 44em;
  margin: 0;
}

.calc-card {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 20px;
}

.field {
  margin-bottom: 20px;
}
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.field .hint {
  font-size: 12.5px;
  color: var(--ink-soft);
  font-weight: 400;
  margin-left: 6px;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
}

.input-unit {
  position: relative;
}
.input-unit input,
.input-unit select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 16px;
  padding: 12px 46px 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
}
.input-unit select { font-family: var(--font-body); padding-right: 14px; }
.input-unit input:focus,
.input-unit select:focus {
  outline: 2px solid var(--green);
  outline-offset: -1px;
  background: #fff;
}
.input-unit .unit {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--ink-soft);
  pointer-events: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--green);
  color: #fff;
  border: none;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius);
  cursor: pointer;
  width: 100%;
}
.btn:hover { background: var(--green-deep); }

/* ---------- Result stub (receipt-style) ---------- */
.stub {
  background: var(--green-deep);
  color: #EFF6F1;
  border-radius: var(--radius);
  padding: 28px 32px;
  display: none;
  position: relative;
  overflow: hidden;
}
.stub.show { display: block; }
.stub::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 10px, transparent 10px 20px);
}
.stub-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #9FC6B2;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.stub-amount {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 40px);
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.stub-amount .won { font-size: 0.5em; color: #9FC6B2; margin-left: 6px; }
.stub-sub {
  font-size: 13px;
  color: #9FC6B2;
  margin-bottom: 20px;
}
.stub-table {
  border-top: 1px dashed rgba(255,255,255,0.25);
  padding-top: 16px;
  display: grid;
  gap: 9px;
}
.stub-table .line {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  font-family: var(--font-mono);
}
.stub-table .line .k { color: #B9D4C6; font-family: var(--font-body); }
.stub-table .line .v { color: #fff; }
.stub-table .line.total {
  border-top: 1px dashed rgba(255,255,255,0.25);
  margin-top: 6px;
  padding-top: 10px;
  font-weight: 700;
}

/* ---------- Explainer / SEO copy blocks ---------- */
.explain {
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px dashed var(--line);
}
.explain h2 {
  font-family: var(--font-display);
  font-size: 20px;
  margin: 0 0 14px;
}
.explain h3 {
  font-size: 15.5px;
  margin: 22px 0 8px;
}
.explain p, .explain li {
  color: var(--ink-soft);
  font-size: 14.5px;
}
.explain ul { padding-left: 20px; }

.disclaimer {
  font-size: 12.5px;
  color: var(--ink-soft);
  background: rgba(184,134,46,0.09);
  border-left: 2px solid var(--gold);
  padding: 12px 16px;
  margin-top: 24px;
}

/* ---------- Related links ---------- */
.related {
  margin-top: 40px;
}
.related-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
}
.related-grid a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  background: var(--paper-card);
}
.related-grid a:hover { border-color: var(--green); color: var(--green); }

/* ---------- Ad slot ---------- */
.ad-slot {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  margin: 28px 0;
}

/* ---------- Static page (privacy/terms/about) ---------- */
.doc { padding: 48px 0 60px; }
.doc h1 {
  font-family: var(--font-display);
  font-size: 30px;
  margin-bottom: 24px;
}
.doc h2 { font-size: 18px; margin-top: 30px; }
.doc p, .doc li { color: var(--ink-soft); font-size: 14.5px; }