/* ootssu.com — content hub design system "인주(印朱)"
   만세력 인쇄물 + 낙관(도장). 외부 폰트/이미지 의존 없음.
   한국어 타이포(word-break: keep-all) 유지. */

:root {
  /* 지면 */
  --paper: #efede6;      /* 한지 회백 */
  --paper-2: #e5e2d8;    /* 접힌 면·표 헤더 */
  --paper-3: #f6f5f0;    /* 카드 지면(한 톤 밝게) */
  --ink: #1a1a18;        /* 먹 */
  --ink-60: #5c5954;     /* 본문 보조 */
  --ink-40: #67635d;     /* 캡션 — 한지 위 4.5:1 통과값 */
  --rule: #1a1a1820;     /* 괘선 */
  --rule-strong: #1a1a1838;
  --seal: #c8402f;       /* 인주 — 면(버튼·인장)에 쓴다 */
  --seal-text: #b2392a;  /* 작은 글자용 인주 — 한지 위 4.5:1 통과값 */
  --seal-fill: #c8402f;  /* 흰 글자를 얹는 면 — 다크에서도 이 값(흰 글자 4.96:1) */
  --seal-wash: #c8402f12;

  /* 오행 5색 — 가이드 분류에만 바인딩, 장식용 아님 */
  --o-blue: #2f6b8f;
  --o-red: #c8402f;
  --o-yellow: #c99a2e;
  --o-white: #8c8b85;
  --o-black: #23262b;

  --radius: 3px;
  --radius-lg: 4px;
  --radius-pill: 999px;
  --wrap: 940px;
  --wrap-wide: 1140px;

  --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  /* 명조 — 웹폰트 없이 OS 기본 한국어 명조까지 폴백 */
  --font-serif: "Noto Serif KR", "Noto Serif CJK KR", AppleMyungjo, Batang, 바탕,
    "Songti SC", "Hiragino Mincho ProN", ui-serif, Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono",
    Menlo, Consolas, monospace;

  /* 구버전 토큰 별칭(본문 인라인 스타일 호환) */
  --bg: var(--paper);
  --surface: var(--paper-3);
  --ink-soft: var(--ink-60);
  --muted: var(--ink-60);
  --faint: var(--ink-40);
  --hairline: var(--rule);
  --hairline-strong: var(--rule-strong);
  --primary: var(--seal);
  --primary-ink: var(--seal);
  --primary-soft: var(--paper-2);
  --accent: var(--seal);
  --shadow-sm: none;
  --shadow-md: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16161a;
    --paper-2: #1e1e23;
    --paper-3: #1b1b20;
    --ink: #f0eee7;
    --ink-60: #b3b0a7;
    --seal-text: #d8685a;
    --ink-40: #8b877e;
    --rule: #f0eee722;
    --rule-strong: #f0eee73d;
    --seal: #d8685a;
    --seal-wash: #d9584a1a;
    --o-blue: #4d8bb0;
    --o-yellow: #d9b04e;
    --o-white: #a3a29b;
    --o-black: #5d626b;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.75;
  font-size: 17px;
  letter-spacing: -.005em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }
.wrap-wide { max-width: var(--wrap-wide); }

/* ── 헤더 ── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap-wide {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; gap: 16px;
}
.brand {
  display: inline-flex; align-items: baseline; gap: 9px;
  font-family: var(--font-serif); font-weight: 700;
  font-size: 21px; letter-spacing: -.01em; color: var(--ink);
}
.brand:hover { text-decoration: none; }
/* 낙관 축소판 — 브랜드 앞 붉은 인장 */
.brand .glyph {
  display: inline-grid; place-items: center;
  width: 22px; height: 22px; flex: none;
  border: 1.5px solid var(--seal); border-radius: 2px;
  color: var(--seal); font-family: var(--font-serif);
  font-size: 13px; font-style: normal; line-height: 1;
  transform: rotate(-3deg); align-self: center;
}
.nav { display: flex; align-items: center; gap: 20px; }
.nav a {
  color: var(--ink-60); font-size: 14.5px; font-weight: 500;
  letter-spacing: -.01em;
}
.nav a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 640px) {
  /* 링크가 많아 좁은 화면에서 지면을 밀어낸다 — 내비게이션만 가로로 흐르게 */
  .nav {
    gap: 13px; flex: 1 1 auto; min-width: 0; justify-content: flex-end;
    overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { font-size: 13px; white-space: nowrap; }
  .nav a.nav-hide-sm { display: none; }
  .brand { flex: 0 0 auto; }
}

/* ── 히어로 ── */
.hero { padding: 76px 0 52px; position: relative; }
.hero .wrap { position: relative; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 9px;
  margin: 0; color: var(--ink-60);
  font-weight: 500; font-size: 13.5px; letter-spacing: -.01em;
}
.hero .kicker::before {
  content: "占";
  display: inline-grid; place-items: center;
  width: 21px; height: 21px;
  background: var(--seal-fill); color: #fff;
  font-family: var(--font-serif); font-size: 13px; line-height: 1;
  border-radius: 1px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 6.2vw, 60px); line-height: 1.2;
  margin: 18px 0 0; max-width: 16ch;
  letter-spacing: -.025em; font-weight: 700;
}
.hero p.lead {
  font-size: clamp(16px, 2.2vw, 18.5px); color: var(--ink-60);
  max-width: 46ch; margin: 20px 0 0;
}
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }

/* 시그니처 — 낙관(落款). 히어로 우측에 한 번 찍힌다. */
.hero .seal {
  position: absolute; right: 6px; top: 6px;
  width: 94px; height: 94px;
  display: grid; place-content: center; gap: 2px;
  border: 2.5px solid var(--seal); border-radius: 3px;
  color: var(--seal);
  font-family: var(--font-serif); font-size: 25px; font-weight: 700;
  line-height: 1.1; letter-spacing: .04em; text-align: center;
  transform: rotate(-3deg);
  animation: stamp .22s cubic-bezier(.2,.9,.2,1) both;
  user-select: none; pointer-events: none;
}
@keyframes stamp {
  from { transform: rotate(-6deg) scale(1.18); opacity: 0; }
  to   { transform: rotate(-3deg) scale(1); opacity: 1; }
}
@media (max-width: 760px) {
  .hero { padding: 52px 0 40px; }
  .hero .seal { width: 66px; height: 66px; font-size: 17px; right: 20px; top: 0; }
  .hero h1 { max-width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .hero .seal { animation: none; }
  * { scroll-behavior: auto !important; }
}

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: 15px; cursor: pointer;
  border: 1px solid transparent;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.btn-primary { background: var(--seal-fill); color: #fff; }
.btn-primary:hover { text-decoration: none; background: color-mix(in srgb, var(--seal-fill) 86%, #000); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule-strong); }
.btn-ghost:hover { text-decoration: none; border-color: var(--ink); }

/* ── 섹션 ── */
.section { padding: 46px 0; border-top: 1px solid var(--rule); }
.hero + .section { border-top: 0; }
.section h2 {
  font-family: var(--font-serif);
  font-size: clamp(23px, 3vw, 31px); letter-spacing: -.02em;
  margin: 0 0 8px; font-weight: 700; line-height: 1.35;
}
.section .section-sub { color: var(--ink-60); margin: 0 0 26px; font-size: 15.5px; }

/* ── 도구 표 — 만세력 격자 ── */
.cat-block { margin-bottom: 30px; }
.cat-title {
  font-size: 13.5px; font-weight: 600;
  color: var(--ink-60); letter-spacing: -.01em; margin: 0 0 10px;
  padding-bottom: 8px; border-bottom: 1px solid var(--rule-strong);
}
.cat-title a { color: var(--ink); }
.grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  background: var(--paper-3);
  border: 1px solid var(--rule); border-right: 0; border-bottom: 0;
}
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .grid { grid-template-columns: 1fr; } }

.card {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--paper-3); border-radius: 0;
  border: 0; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 16px 17px;
  transition: background .16s ease;
}
.card:hover { text-decoration: none; background: var(--paper-2); }
.card .emoji {
  font-size: 21px; line-height: 1.3; flex: none;
  filter: grayscale(.85); opacity: .8;
  transition: filter .16s ease, opacity .16s ease;
}
.card:hover .emoji { filter: grayscale(0); opacity: 1; }
.card .c-name { display: block; font-weight: 600; color: var(--ink); font-size: 15.5px; letter-spacing: -.01em; }
.card .c-blurb { display: block; color: var(--ink-60); font-size: 13.5px; line-height: 1.6; margin-top: 3px; }

/* ── 가이드 목록 ── */
.guide-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  background: var(--paper-3);
  border: 1px solid var(--rule); border-right: 0; border-bottom: 0;
}
@media (max-width: 700px) { .guide-grid { grid-template-columns: 1fr; } }
.guide-card {
  display: block; background: var(--paper-3); border-radius: 0;
  border: 0; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 22px 24px 24px;
  transition: background .16s ease;
}
.guide-card:hover { text-decoration: none; background: var(--paper-2); }
.guide-card .g-tag {
  display: inline-block; font-size: 12.5px; font-weight: 600;
  color: var(--seal-text); letter-spacing: -.01em;
}
.guide-card h3 {
  font-family: var(--font-serif); margin: 7px 0 7px;
  font-size: 19.5px; line-height: 1.45; letter-spacing: -.02em;
  font-weight: 700; color: var(--ink);
}
.guide-card p { margin: 0; color: var(--ink-60); font-size: 14.5px; line-height: 1.65; }

/* ── 앱 디렉터리 안내 ── */
.apps-band {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: 26px; padding: 26px 28px;
  border: 1px solid var(--rule-strong); border-left: 3px solid var(--seal);
  background: var(--paper-3);
}
.apps-band .t p { margin: 0; color: var(--ink-60); font-size: 15.5px; }
.apps-band .t p + p { margin-top: 10px; }
.apps-band .figures {
  display: flex; gap: 26px; margin: 14px 0 0; padding: 0; list-style: none;
}
.apps-band .figures b {
  display: block; font-family: var(--font-serif); font-size: 27px;
  line-height: 1.2; color: var(--ink); font-weight: 700;
}
.apps-band .figures span {
  font-size: 13px; color: var(--ink-40);
}
@media (max-width: 700px) {
  .apps-band { grid-template-columns: 1fr; gap: 18px; padding: 22px; }
}

/* ── 아티클(가이드 본문) ── */
.article { padding: 44px 0 20px; }
.breadcrumb { font-size: 13px; color: var(--ink-40); margin-bottom: 16px; }
.breadcrumb a { color: var(--ink-60); }
.article h1 {
  font-family: var(--font-serif);
  font-size: clamp(27px, 4.4vw, 41px); line-height: 1.28;
  letter-spacing: -.025em; margin: 0 0 12px; font-weight: 700;
}
.article .meta { font-family: var(--font-mono); color: var(--ink-40); font-size: 13px; margin-bottom: 28px; }
.prose { font-size: 17px; }
.prose h2 {
  font-family: var(--font-serif); font-size: 25px; letter-spacing: -.02em;
  margin: 46px 0 12px; font-weight: 700; line-height: 1.4;
  padding-top: 14px; border-top: 1px solid var(--rule);
}
.prose h3 {
  font-family: var(--font-serif); font-size: 20px; letter-spacing: -.015em;
  margin: 30px 0 8px; font-weight: 700;
}
.prose p { margin: 0 0 17px; color: var(--ink-60); }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 1.3em; color: var(--ink-60); }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose table { width: 100%; border-collapse: collapse; margin: 8px 0 24px; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--rule-strong); padding: 10px 12px; text-align: left; }
.prose th { background: var(--paper-2); color: var(--ink); font-weight: 600; }
.prose blockquote {
  margin: 0 0 18px; padding: 12px 20px;
  border-left: 3px solid var(--seal); background: var(--seal-wash);
  border-radius: 0; color: var(--ink-60);
}
.callout {
  background: var(--paper-3); border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--seal);
  border-radius: 0; padding: 18px 22px; margin: 26px 0;
}
.callout .callout-t {
  font-size: 13.5px; font-weight: 600;
  color: var(--seal-text); margin-bottom: 6px; letter-spacing: -.01em;
}

/* 관련 앱 CTA(아티클 내부) */
.app-cta {
  display: flex; align-items: center; gap: 14px; margin: 32px 0;
  background: var(--paper-3);
  border: 1px solid var(--rule-strong); border-left: 3px solid var(--seal);
  border-radius: 0; padding: 18px 22px;
}
.app-cta .emoji { font-size: 26px; filter: grayscale(.85); }
.app-cta .t { flex: 1; }
.app-cta .t b { display: block; color: var(--ink); font-size: 16px; font-weight: 600; }
.app-cta .t span { color: var(--ink-60); font-size: 13.5px; }

/* 광고 슬롯 자리 */
.ad-slot { display: block; margin: 32px auto; min-height: 90px; text-align: center; }

/* ── 정적 페이지(legal 등) ── */
.page { padding: 48px 0; }
.page h1 {
  font-family: var(--font-serif); font-size: clamp(27px, 4vw, 36px);
  letter-spacing: -.025em; margin: 0 0 8px; font-weight: 700;
}
.page .updated { font-family: var(--font-mono); color: var(--ink-40); font-size: 13px; margin-bottom: 28px; }

/* ── 푸터 ── */
.site-footer {
  border-top: 1px solid var(--rule-strong); margin-top: 64px;
  padding: 44px 0 58px; color: var(--ink-60); font-size: 14px;
  background: var(--paper-2);
}
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 28px 60px; margin-bottom: 28px; }
.site-footer .col h4 {
  font-size: 12.5px; text-transform: none;
  letter-spacing: -.01em; color: var(--ink-40); margin: 0 0 10px; font-weight: 600;
}
.site-footer .col a { display: block; color: var(--ink-60); margin: 5px 0; font-size: 14.5px; }
.site-footer .legal-line {
  padding-top: 20px; border-top: 1px solid var(--rule);
  color: var(--ink-40); font-size: 13px;
}
.site-footer .disclaimer { margin-top: 6px; color: var(--ink-40); font-size: 12.5px; }

/* 접근성 */
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus {
  left: 12px; top: 12px; background: var(--paper-3); padding: 8px 14px;
  border: 1px solid var(--ink); border-radius: 2px; z-index: 100;
}
:focus-visible { outline: 2px solid var(--seal); outline-offset: 2px; }

/* FAQ — 괘선 목록 */
.faq-item {
  border: 0; border-top: 1px solid var(--rule); border-radius: 0;
  background: transparent; padding: 16px 2px; margin-bottom: 0;
}
.faq-item:last-of-type { border-bottom: 1px solid var(--rule); }
.faq-item > summary {
  cursor: pointer; font-weight: 600; color: var(--ink);
  list-style: none; letter-spacing: -.01em;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::after { content: "+"; float: right; color: var(--seal-text); font-weight: 500; font-family: var(--font-mono); }
.faq-item[open] > summary::after { content: "−"; }
.faq-item > p {
  margin: 12px 0 2px; color: var(--ink-60);
  line-height: 1.75; word-break: keep-all;
}

/* 일본어·중국어는 어절 개념이 없어 keep-all이 넘침을 만든다 */
:lang(ja), :lang(zh) { word-break: normal; overflow-wrap: anywhere; }