@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/variable/pretendardvariable-dynamic-subset.css');
@import url('https://fonts.googleapis.com/css2?family=Gowun+Batang:wght@400;700&display=swap');

:root {
  color-scheme: light;
  --canvas: #f4f7f8;
  --surface: #ffffff;
  --ink: #111827;
  --muted: #55606f;
  --rule: #cbd5df;
  --rule-dark: #93a3b5;
  --blue: #075cf6;
  --blue-dark: #0644b9;
  --yellow: #ffd43b;
  --mint: #45d19b;
  --error: #b42318;
  --shadow: 0 18px 48px rgba(23, 43, 77, .10), 0 3px 12px rgba(23, 43, 77, .06);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: Pretendard Variable, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
::selection { color: #fff; background: var(--blue); }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { text-decoration-color: var(--blue); }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; box-shadow: 0 0 0 5px var(--blue); }

.skip-link {
  position: fixed; left: 12px; top: -80px; z-index: 100;
  padding: 10px 14px; color: white; background: var(--ink);
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid rgba(147, 163, 181, .55);
  background: rgba(244, 247, 248, .94);
}
.nav {
  width: min(calc(100% - 32px), var(--max)); min-height: 68px; margin: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { width: 28px; aspect-ratio: 1; background: var(--blue); position: relative; border-radius: 4px; }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: var(--yellow); }
.brand-mark::before { width: 16px; height: 2px; left: 6px; top: 9px; }
.brand-mark::after { width: 2px; height: 16px; left: 13px; top: 6px; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: .93rem; }
.nav-links a { text-decoration: none; color: #2f3a48; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }
.menu-button { display: none; min-width: 44px; min-height: 44px; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); border-radius: 4px; }

main { overflow: clip; }
.container { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
.hero { padding: clamp(64px, 10vw, 124px) 0 92px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(420px, 7fr); align-items: center; gap: clamp(32px, 6vw, 80px); }
.hero-copy { position: relative; z-index: 2; }
.hero h1 {
  margin: 0; max-width: 11ch;
  font-size: clamp(2.75rem, 6vw, 5.8rem); line-height: .98; letter-spacing: -.045em;
  text-wrap: balance;
}
.hero h1 span { color: var(--blue); }
.hero-intro { margin: 28px 0 0; max-width: 58ch; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.28rem); text-wrap: pretty; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.button {
  min-height: 48px; padding: 12px 18px; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--ink); border-radius: 4px; text-decoration: none; font-weight: 700;
  transition: transform 140ms ease-out, background-color 140ms ease-out, color 140ms ease-out;
}
.button.primary { border-color: var(--blue); color: white; background: var(--blue); }
.button.secondary { background: var(--surface); }
@media (hover:hover) { .button:hover { transform: translateY(-2px); } .button.primary:hover { background: var(--blue-dark); } }
.button:active { transform: translateY(0); }

.blueprint {
  position: relative; min-height: 510px; isolation: isolate;
  border: 1px solid #86adf8; border-radius: 10px; overflow: hidden;
  background-color: #eaf1ff;
  background-image: linear-gradient(rgba(7,92,246,.10) 1px, transparent 1px), linear-gradient(90deg, rgba(7,92,246,.10) 1px, transparent 1px), linear-gradient(rgba(7,92,246,.20) 1px, transparent 1px), linear-gradient(90deg, rgba(7,92,246,.20) 1px, transparent 1px);
  background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px;
  box-shadow: var(--shadow);
}
.room { position: absolute; inset: 54px 62px 64px 72px; border: 3px solid var(--blue); background: rgba(255,255,255,.54); }
.room::before { content: ""; position: absolute; width: 92px; height: 42px; left: -3px; bottom: -3px; border: 3px solid var(--blue); border-bottom: 0; background: var(--yellow); }
.room::after { content: ""; position: absolute; width: 44px; height: 80px; right: -3px; top: 40px; border: 3px solid var(--blue); border-right: 0; background: var(--surface); }
.fixture { position: absolute; border: 2px solid var(--ink); background: rgba(255,255,255,.88); display: grid; place-items: center; font-size: .76rem; font-weight: 700; }
.fixture.bed { width: 47%; height: 34%; right: 8%; bottom: 10%; }
.fixture.rack { width: 22%; height: 48%; left: 8%; top: 12%; }
.fixture.dryer { width: 34%; height: 16%; right: 10%; top: 12%; background: var(--mint); }
.measure { position: absolute; color: var(--blue-dark); font-size: .78rem; font-weight: 800; letter-spacing: .02em; }
.measure.top { left: 72px; right: 62px; top: 28px; text-align: center; border-top: 1px solid var(--blue); padding-top: 5px; }
.measure.side { top: 54px; bottom: 64px; right: 22px; writing-mode: vertical-rl; border-right: 1px solid var(--blue); padding-right: 5px; text-align: center; }
.blueprint-note { position: absolute; left: 18px; bottom: 15px; margin: 0; font-family: "Gowun Batang", serif; font-size: .9rem; }
.blueprint-stamp { position: absolute; right: 16px; bottom: 14px; padding: 4px 8px; color: white; background: var(--blue); font-size: .72rem; font-weight: 800; transform: rotate(-2deg); }

.principles { padding: 84px 16px; background: var(--ink); color: white; }
.principles-layout { display: grid; grid-template-columns: 4fr 8fr; gap: clamp(28px, 7vw, 100px); }
.principles h2 { margin: 0; font-family: "Gowun Batang", serif; font-size: clamp(2rem, 4vw, 3.7rem); line-height: 1.16; font-weight: 700; }
.criteria { margin: 0; padding: 0; list-style: none; border-top: 1px solid #4a5567; }
.criteria li { display: grid; grid-template-columns: 42px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid #4a5567; }
.criteria strong { color: var(--yellow); font-variant-numeric: tabular-nums; }
.criteria span { color: #d8dee8; }

.guides { padding: 96px 0 110px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 32px; }
.section-head h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.6rem); letter-spacing: -.04em; line-height: 1; }
.section-head p { margin: 0; max-width: 46ch; color: var(--muted); }
.guide-list { border-top: 2px solid var(--ink); }
.guide-row { display: grid; grid-template-columns: 110px minmax(0,1fr) 130px; gap: 24px; align-items: center; padding: 28px 4px; border-bottom: 1px solid var(--rule); text-decoration: none; transition: transform 140ms ease-out, color 140ms ease-out; }
.guide-row time, .guide-row .status { color: var(--muted); font-size: .88rem; }
.guide-row h3 { margin: 0 0 6px; font-size: clamp(1.2rem, 2vw, 1.55rem); letter-spacing: -.02em; }
.guide-row p { margin: 0; color: var(--muted); }
.guide-row .arrow { justify-self: end; color: var(--blue); font-weight: 800; }
@media (hover:hover) { .guide-row:hover { color: var(--blue); transform: translateX(3px); } }

.disclosure { padding: 28px; border: 1px solid var(--rule-dark); background: var(--surface); border-radius: 10px; }
.disclosure strong { display: block; margin-bottom: 5px; }
.disclosure p { margin: 0; color: var(--muted); }

.page-hero { padding: 80px 0 48px; border-bottom: 1px solid var(--rule); }
.page-hero h1 { margin: 0; max-width: 15ch; font-size: clamp(2.6rem, 7vw, 5.5rem); line-height: 1; letter-spacing: -.045em; }
.page-hero p { max-width: 62ch; margin: 24px 0 0; color: var(--muted); font-size: 1.12rem; }
.breadcrumbs { margin-bottom: 20px; color: var(--muted); font-size: .9rem; }
.article-shell { display: grid; grid-template-columns: minmax(0, 760px) minmax(220px, 1fr); gap: clamp(44px, 8vw, 110px); padding: 64px 0 110px; align-items: start; }
.article { font-size: 1.04rem; }
.article h2 { margin: 56px 0 16px; font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.025em; line-height: 1.2; }
.article h3 { margin: 34px 0 10px; font-size: 1.25rem; }
.article p, .article li { max-width: 72ch; }
.article ul, .article ol { padding-left: 1.25em; }
.article table { width: 100%; border-collapse: collapse; margin: 24px 0; font-variant-numeric: tabular-nums; }
.article th, .article td { padding: 13px 12px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.article th { border-top: 2px solid var(--ink); background: #eaf1ff; }
.article .note { padding: 20px; border: 1px solid #8fb3f7; background: #edf4ff; border-radius: 8px; }
.sidebar { position: sticky; top: 96px; padding: 20px; border: 1px solid var(--rule); background: var(--surface); }
.sidebar h2 { margin: 0 0 10px; font-size: 1rem; }
.sidebar ul { margin: 0; padding: 0; list-style: none; }
.sidebar li + li { margin-top: 8px; }
.sidebar a { color: var(--muted); font-size: .9rem; }
.meta { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 26px; color: var(--muted); font-size: .88rem; }

.site-footer { padding: 58px 0 32px; border-top: 1px solid var(--rule); background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-grid h2 { margin: 0 0 12px; font-size: 1rem; }
.footer-grid p { margin: 0; max-width: 50ch; color: var(--muted); }
.footer-links { display: grid; gap: 8px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--rule); color: var(--muted); font-size: .82rem; }

@media (max-width: 820px) {
  .menu-button { display: inline-grid; place-items: center; }
  .nav-links { position: absolute; left: 16px; right: 16px; top: 62px; display: none; padding: 14px; border: 1px solid var(--rule); background: var(--surface); box-shadow: var(--shadow); }
  .nav-links[data-open="true"] { display: grid; }
  .hero-grid, .principles-layout, .article-shell { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .blueprint { min-height: 430px; }
  .principles-layout { gap: 36px; }
  .sidebar { position: static; }
  .section-head { display: block; }
  .section-head p { margin-top: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .hero h1 { max-width: 9ch; }
  .blueprint { min-height: 370px; }
  .room { inset: 52px 40px 58px 46px; }
  .measure.top { left: 46px; right: 40px; }
  .measure.side { right: 10px; }
  .guide-row { grid-template-columns: 1fr 44px; gap: 10px; }
  .guide-row time, .guide-row .status { grid-column: 1 / -1; }
  .guide-row .arrow { grid-column: 2; grid-row: 2; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
  .footer-bottom { display: block; }
  .article table { display: block; overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}