:root {
  --bg: #f3efe8;
  --paper: #fffdf9;
  --paper-soft: #f8f2eb;
  --ink: #1d1a1c;
  --muted: #736b70;
  --line: #ddd3d8;
  --accent: #714b7d;
  --accent-2: #b27b38;
  --accent-soft: #eee3f1;
  --tip: #347a57;
  --warn: #9a690d;
  --danger: #a44348;
  --note: #52719f;
  --code: #252126;
  --shadow: 0 18px 52px rgba(54, 42, 48, .09);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Pretendard, "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 9% 0%, rgba(113,75,125,.09), transparent 28%),
    radial-gradient(circle at 91% 4%, rgba(178,123,56,.07), transparent 25%),
    var(--bg);
  line-height: 1.7;
}
a { color: inherit; }
code, pre { font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; }
.topbar {
  position: sticky; top: 0; z-index: 30;
  border-bottom: 1px solid rgba(221,211,216,.9);
  background: rgba(247,243,237,.9);
  backdrop-filter: blur(14px);
}
.topbar-inner {
  max-width: 1200px; margin: 0 auto; padding: 13px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
}
.brand { font-weight: 900; text-decoration: none; letter-spacing: -.03em; }
.top-link, .top-actions { color: var(--muted); font-size: 14px; }
.top-actions { display: flex; gap: 16px; }
.top-actions a, .top-link { text-decoration: none; }
.top-actions a:hover, .top-link:hover { color: var(--accent); }
.shell { max-width: 1160px; margin: 0 auto; padding: 58px 24px 90px; }
.hero { padding: 22px 0 42px; }
.eyebrow { margin: 0 0 9px; color: var(--accent); font-size: 12px; font-weight: 900; letter-spacing: .16em; }
h1,h2,h3,h4 { line-height: 1.25; letter-spacing: -.035em; }
.hero h1 { max-width: 900px; margin: 0; font-size: clamp(38px,6vw,68px); line-height: 1.08; letter-spacing: -.05em; }
.hero-copy { max-width: 760px; margin: 18px 0 0; color: var(--muted); font-size: 18px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.hero-badges span { padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.55); color: var(--muted); font-size: 13px; font-weight: 750; }
.panel { margin-top: 22px; border: 1px solid var(--line); border-radius: 24px; background: var(--paper); box-shadow: var(--shadow); overflow: hidden; }
.section-head { padding: 28px 30px 18px; display: flex; align-items: end; justify-content: space-between; gap: 26px; }
.section-head.compact { padding-bottom: 8px; }
.section-head h2 { margin: 0; font-size: 30px; }
.section-copy { max-width: 420px; margin: 0; color: var(--muted); font-size: 14px; }
.doc-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; padding: 0 30px 30px; }
.doc-card { position: relative; min-height: 190px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg,#fffefa,var(--paper-soft)); text-decoration: none; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.doc-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb,var(--accent) 45%,var(--line)); box-shadow: 0 14px 30px rgba(72,54,68,.08); }
.doc-card .kicker { color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.doc-card h3 { margin: 9px 0 8px; font-size: 22px; }
.doc-card p { margin: 0; color: var(--muted); font-size: 14px; }
.doc-card .path { margin-top: 24px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font: 11px/1.3 "Cascadia Code", Consolas, monospace; }
.policy-copy { padding: 2px 30px 25px; color: var(--muted); }
.policy-copy code { padding: 2px 6px; border-radius: 6px; background: #eee8e3; color: var(--ink); }
.reader-shell { max-width: 1180px; margin: 0 auto; padding: 48px 24px 90px; }
.doc-hero { padding: 8px 0 32px 252px; }
.doc-hero h1 { margin: 0; font-size: clamp(34px,5vw,56px); }
.doc-path { margin: 12px 0 0; color: var(--muted); font: 12px/1.5 "Cascadia Code", Consolas, monospace; }
.reader-layout { display: grid; grid-template-columns: 230px minmax(0,1fr); gap: 22px; align-items: start; }
.toc-card { position: sticky; top: 76px; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,253,249,.88); box-shadow: 0 10px 28px rgba(54,42,48,.05); }
.toc-title { margin-bottom: 10px; color: var(--muted); font-size: 13px; font-weight: 900; }
.toc { display: grid; gap: 5px; }
.toc a { display:block; padding:7px 9px; border-radius:9px; color:var(--muted); text-decoration:none; font-size:13px; line-height:1.35; }
.toc a.sub { padding-left:18px; font-size:12px; }
.toc a:hover,.toc a.active { background:var(--accent-soft); color:var(--accent); }
.reader-card { min-width:0; border:1px solid var(--line); border-radius:26px; background:var(--paper); box-shadow:var(--shadow); overflow:hidden; }
.status { padding:70px 30px; text-align:center; color:var(--muted); }
.reader { padding:clamp(30px,5vw,62px); }
.reader > h1:first-child { display:none; }
.reader h1,.reader h2,.reader h3,.reader h4 { scroll-margin-top:88px; }
.reader h2 { margin:54px 0 18px; padding-top:16px; border-top:1px solid var(--line); font-size:30px; }
.reader h2:first-of-type { margin-top:8px; }
.reader h3 { margin:34px 0 14px; font-size:22px; }
.reader h4 { margin:26px 0 10px; font-size:18px; }
.reader p,.reader li { font-size:16px; }
.reader li + li { margin-top:6px; }
.reader ul,.reader ol { padding-left:1.4em; }
.reader a { color:var(--accent); text-underline-offset:3px; }
.reader hr { margin:42px 0; border:0; border-top:1px solid var(--line); }
.reader code { padding:2px 6px; border-radius:6px; background:#eee8e3; font-size:.92em; }
.reader pre { position:relative; overflow-x:auto; margin:18px 0 24px; padding:18px; border-radius:14px; background:var(--code); color:#f7f2f4; }
.reader pre code { padding:0; background:transparent; color:inherit; }
.copy-btn { position:absolute; top:9px; right:9px; border:1px solid rgba(255,255,255,.15); border-radius:8px; padding:5px 8px; background:rgba(255,255,255,.08); color:#ddd5dc; font:inherit; font-size:11px; cursor:pointer; }
.reader table { display:block; width:100%; overflow-x:auto; border-collapse:collapse; margin:22px 0; }
.reader th,.reader td { padding:11px 13px; border:1px solid var(--line); text-align:left; vertical-align:top; }
.reader th { background:var(--paper-soft); }
.reader img { display:block; max-width:100%; height:auto; margin:20px auto; border:1px solid var(--line); border-radius:16px; }
.callout { margin:22px 0; padding:16px 18px; border:1px solid var(--line); border-left-width:5px; border-radius:14px; background:var(--paper-soft); }
.callout-label { margin-bottom:7px; font-size:12px; font-weight:900; letter-spacing:.06em; }
.callout.important { border-left-color:var(--accent); background:var(--accent-soft); }
.callout.important .callout-label { color:var(--accent); }
.callout.tip { border-left-color:var(--tip); background:#eaf4ed; }
.callout.tip .callout-label { color:var(--tip); }
.callout.warning { border-left-color:var(--warn); background:#fbf1d9; }
.callout.warning .callout-label { color:var(--warn); }
.callout.caution { border-left-color:var(--danger); background:#f8e3e1; }
.callout.caution .callout-label { color:var(--danger); }
.callout.note { border-left-color:var(--note); background:#e9eef6; }
.callout.note .callout-label { color:var(--note); }
@media (max-width:900px) {
  .doc-grid { grid-template-columns:1fr; }
  .reader-layout { grid-template-columns:1fr; }
  .toc-card { position:static; }
  .toc { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .toc a.sub { display:none; }
  .doc-hero { padding-left:0; }
}
@media (max-width:640px) {
  .shell,.reader-shell { padding:34px 12px 64px; }
  .topbar-inner { padding:11px 13px; }
  .top-actions a:first-child { display:none; }
  .hero-copy { font-size:16px; }
  .section-head { padding:22px 18px 14px; flex-direction:column; align-items:flex-start; }
  .doc-grid { padding:0 18px 20px; }
  .policy-copy { padding:2px 18px 20px; }
  .reader-card { border-radius:18px; }
  .reader { padding:25px 18px 34px; }
  .reader h2 { font-size:25px; }
  .toc { grid-template-columns:1fr; }
}
@media (prefers-color-scheme:dark) {
  :root { --bg:#171416; --paper:#211d21; --paper-soft:#2a242a; --ink:#f3edf2; --muted:#aaa0a7; --line:#403740; --accent:#cda7dc; --accent-2:#e2b873; --accent-soft:#34283a; --tip:#82caa0; --warn:#e4b55c; --danger:#e68e94; --note:#95add6; --code:#110f11; --shadow:none; }
  body { background:var(--bg); }
  .topbar { background:rgba(23,20,22,.9); }
  .hero-badges span,.toc-card { background:rgba(255,255,255,.03); }
  .doc-card { background:linear-gradient(145deg,#252025,var(--paper-soft)); }
  .policy-copy code,.reader code { background:#332d33; }
  .callout.tip { background:#1f3026; }
  .callout.warning { background:#332a18; }
  .callout.caution { background:#352120; }
  .callout.note { background:#202938; }
}