/* ootssu.com — content hub design system
   순수 CSS, 외부 폰트/이미지 의존 없음. 한국어 타이포(word-break: keep-all). */

:root {
  --bg: #fbfaff;
  --surface: #ffffff;
  --ink: #1b1725;
  --ink-soft: #4a4458;
  --muted: #6f6980;
  --faint: #9a94a8;
  --hairline: #ece8f4;
  --hairline-strong: #ddd7ec;
  --primary: #6d4aff;
  --primary-ink: #5836e0;
  --primary-soft: #efeaff;
  --accent: #ff5a91;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(27, 23, 37, .04), 0 2px 8px rgba(27, 23, 37, .05);
  --shadow-md: 0 6px 24px rgba(84, 54, 224, .10);
  --wrap: 960px;
  --wrap-wide: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard",
    "Malgun Gothic", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131019;
    --surface: #1c1826;
    --ink: #f2eefb;
    --ink-soft: #cfc8de;
    --muted: #a49db6;
    --faint: #746d86;
    --hairline: #2a2438;
    --hairline-strong: #362f47;
    --primary: #9d84ff;
    --primary-ink: #b6a3ff;
    --primary-soft: #241d3a;
    --accent: #ff7aa6;
    --shadow-md: 0 6px 24px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 17px;
  letter-spacing: -.01em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.wrap-wide { max-width: var(--wrap-wide); }

/* ── 헤더 ── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.site-header .wrap-wide {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800;
  font-size: 20px; letter-spacing: -.03em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .glyph { font-size: 22px; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--ink-soft); font-size: 15px; font-weight: 600; }
.nav a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 640px) {
  .nav { gap: 14px; }
  .nav a.nav-hide-sm { display: none; }
}

/* ── 히어로 ── */
.hero { padding: 64px 0 40px; }
.hero .kicker { color: var(--primary-ink); font-weight: 700; font-size: 14px;
  letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.15; margin: 14px 0 0;
  letter-spacing: -.035em; font-weight: 800; }
.hero p.lead { font-size: clamp(17px, 2.4vw, 20px); color: var(--ink-soft);
  max-width: 40ch; margin: 18px 0 0; }
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-pill);
  font-weight: 700; font-size: 15px; cursor: pointer; border: 0;
  transition: transform .12s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover { text-decoration: none; transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--ink); border: 1px solid var(--hairline-strong); }
.btn-ghost:hover { text-decoration: none; border-color: var(--primary); color: var(--primary-ink); }

/* ── 섹션 ── */
.section { padding: 40px 0; }
.section h2 { font-size: clamp(22px, 3vw, 28px); letter-spacing: -.03em; margin: 0 0 6px;
  display: flex; align-items: center; gap: 12px; font-weight: 800; }
.section h2::before { content: ""; width: 6px; height: 22px; border-radius: 4px;
  background: linear-gradient(var(--primary), var(--accent)); }
.section .section-sub { color: var(--muted); margin: 0 0 22px; }

/* ── 도구 카드 그리드 ── */
.cat-block { margin-bottom: 34px; }
.cat-title { font-size: 15px; font-weight: 700; color: var(--primary-ink);
  letter-spacing: .02em; margin: 0 0 14px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .grid { grid-template-columns: 1fr; } }

.card {
  display: flex; gap: 13px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--hairline);
  border-radius: var(--radius); padding: 16px 16px; box-shadow: var(--shadow-sm);
  transition: transform .14s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { text-decoration: none; transform: translateY(-2px);
  border-color: var(--hairline-strong); box-shadow: var(--shadow-md); }
.card .emoji { font-size: 26px; line-height: 1.2; flex: none; }
.card .c-name { font-weight: 700; color: var(--ink); font-size: 16px; }
.card .c-blurb { color: var(--muted); font-size: 13.5px; line-height: 1.55; margin-top: 3px; }

/* ── 가이드 목록 카드 ── */
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .guide-grid { grid-template-columns: 1fr; } }
.guide-card {
  display: block; background: var(--surface); border: 1px solid var(--hairline);
  border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm);
  transition: transform .14s ease, box-shadow .2s ease, border-color .2s ease;
}
.guide-card:hover { text-decoration: none; transform: translateY(-2px);
  border-color: var(--hairline-strong); box-shadow: var(--shadow-md); }
.guide-card .g-tag { font-size: 12.5px; font-weight: 700; color: var(--primary-ink);
  letter-spacing: .04em; }
.guide-card h3 { margin: 8px 0 6px; font-size: 19px; letter-spacing: -.02em; color: var(--ink); }
.guide-card p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ── 아티클(가이드 본문) ── */
.article { padding: 40px 0 20px; }
.breadcrumb { font-size: 13.5px; color: var(--faint); margin-bottom: 14px; }
.breadcrumb a { color: var(--muted); }
.article h1 { font-size: clamp(26px, 4.2vw, 38px); line-height: 1.2;
  letter-spacing: -.035em; margin: 0 0 12px; font-weight: 800; }
.article .meta { color: var(--faint); font-size: 14px; margin-bottom: 26px; }
.prose { font-size: 17.5px; }
.prose h2 { font-size: 24px; letter-spacing: -.025em; margin: 40px 0 12px; font-weight: 800;
  padding-top: 8px; }
.prose h3 { font-size: 19.5px; letter-spacing: -.02em; margin: 28px 0 8px; font-weight: 700; }
.prose p { margin: 0 0 16px; color: var(--ink-soft); }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 1.3em; color: var(--ink-soft); }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose table { width: 100%; border-collapse: collapse; margin: 8px 0 22px; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--hairline-strong); padding: 9px 12px; text-align: left; }
.prose th { background: var(--primary-soft); color: var(--ink); font-weight: 700; }
.prose blockquote { margin: 0 0 18px; padding: 12px 18px; border-left: 4px solid var(--primary);
  background: var(--primary-soft); border-radius: 0 10px 10px 0; color: var(--ink-soft); }
.callout { background: var(--surface); border: 1px solid var(--hairline-strong);
  border-radius: var(--radius); padding: 18px 20px; margin: 24px 0; box-shadow: var(--shadow-sm); }
.callout .callout-t { font-weight: 700; color: var(--ink); margin-bottom: 4px; }

/* 관련 앱 CTA(아티클 내부) */
.app-cta {
  display: flex; align-items: center; gap: 14px; margin: 30px 0;
  background: linear-gradient(120deg, var(--primary-soft), color-mix(in srgb, var(--accent) 14%, var(--surface)));
  border: 1px solid var(--hairline-strong); border-radius: var(--radius-lg); padding: 18px 20px;
}
.app-cta .emoji { font-size: 30px; }
.app-cta .t { flex: 1; }
.app-cta .t b { display: block; color: var(--ink); font-size: 16px; }
.app-cta .t span { color: var(--muted); font-size: 13.5px; }

/* 광고 슬롯 자리 */
.ad-slot { display: block; margin: 28px auto; min-height: 90px; text-align: center; }

/* ── 정적 페이지(legal 등) ── */
.page { padding: 44px 0; }
.page h1 { font-size: clamp(26px, 4vw, 34px); letter-spacing: -.03em; margin: 0 0 8px; font-weight: 800; }
.page .updated { color: var(--faint); font-size: 14px; margin-bottom: 26px; }

/* ── 푸터 ── */
.site-footer { border-top: 1px solid var(--hairline); margin-top: 60px;
  padding: 40px 0 56px; color: var(--muted); font-size: 14px; background: var(--surface); }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 30px 60px; margin-bottom: 26px; }
.site-footer .col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--faint); margin: 0 0 10px; }
.site-footer .col a { display: block; color: var(--ink-soft); margin: 5px 0; font-size: 14.5px; }
.site-footer .legal-line { padding-top: 20px; border-top: 1px solid var(--hairline);
  color: var(--faint); font-size: 13px; }
.site-footer .disclaimer { margin-top: 6px; color: var(--faint); font-size: 12.5px; }

/* 접근성 */
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: var(--surface); padding: 8px 14px;
  border-radius: 8px; z-index: 100; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 55%, transparent); outline-offset: 2px; }