:root {
  --bg: #080808;
  --bg2: #0d0d0d;
  --panel: #131313;
  --panel2: #181818;
  --panel3: #202020;
  --line: #2b2b2b;
  --text: #f4f4f4;
  --sub: #c9c9c9;
  --muted: #8d8d8d;
  --accent: #e03a3a;
  --accent2: #ff6767;
  --accent-soft: rgba(224, 58, 58, .16);
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(224,58,58,.14), transparent 32%),
    radial-gradient(circle at 88% 16%, rgba(255,255,255,.055), transparent 28%),
    var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code { padding: 2px 6px; border: 1px solid var(--line); border-radius: 8px; background: #0a0a0a; color: #ffe0e0; }
.container { width: min(calc(100% - 36px), var(--max)); margin: 0 auto; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8,8,8,.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 10px 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand img { width: 38px; height: 38px; border-radius: 12px; background: #000; box-shadow: 0 0 22px rgba(224,58,58,.24); }
.brand-title { display: block; font-weight: 950; letter-spacing: -.01em; }
.brand-sub { display: block; color: var(--muted); font-size: .78rem; margin-top: 1px; }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 6px; }
.nav-links a { color: var(--sub); padding: 8px 10px; border-radius: 11px; font-size: .94rem; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--panel2); }
.hero { padding: 78px 0 54px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.16fr) minmax(280px,.84fr); gap: 36px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 11px; border-radius: 999px; border: 1px solid rgba(224,58,58,.44); background: var(--accent-soft); color: #ffd6d6; font-size: .82rem; font-weight: 900; margin-bottom: 16px; }
h1 { margin: 0 0 16px; font-size: clamp(2.3rem, 5vw, 4.2rem); line-height: 1.06; letter-spacing: -.05em; }
.lead { color: var(--sub); max-width: 780px; font-size: 1.05rem; margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 17px; border-radius: 13px; border: 1px solid transparent; font-weight: 950; cursor: pointer; transition: .16s ease; }
.btn-primary { background: linear-gradient(180deg, var(--accent2), var(--accent)); color: white; box-shadow: 0 12px 28px rgba(224,58,58,.18); }
.btn-secondary { background: var(--panel2); border-color: var(--line); color: var(--text); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--sub); }
.btn:hover { transform: translateY(-1px); }
.hero-card, .panel-card { background: linear-gradient(180deg, var(--panel2), #101010); border: 1px solid var(--line); border-radius: 24px; padding: 24px; box-shadow: 0 22px 70px rgba(0,0,0,.36); }
.hero-card img { width: min(100%, 260px); margin: 0 auto 18px; border-radius: 22px; background: #000; padding: 18px; }
.hero-card h2, .hero-card h3, .panel-card h2, .panel-card h3 { margin: 0 0 10px; line-height: 1.25; }
.hero-card p, .panel-card p, .card p, .card li { color: var(--sub); }
section { padding: 58px 0; border-bottom: 1px solid var(--line); }
.section-title { margin: 0 0 12px; font-size: clamp(1.65rem, 3vw, 2.4rem); letter-spacing: -.03em; }
.section-lead { margin: 0 0 26px; color: var(--sub); max-width: 820px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 22px; }
.card h3 { margin: 0 0 9px; font-size: 1.12rem; }
.kicker, .tag { display: inline-flex; padding: 4px 9px; margin-bottom: 11px; border-radius: 999px; background: var(--accent-soft); color: #ffd1d1; font-size: .78rem; font-weight: 950; }
.meta-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 0; padding: 0; list-style: none; }
.meta-list li { border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; color: var(--sub); background: #0d0d0d; font-size: .86rem; }
.split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 20px; align-items: start; }
.list { margin: 0; padding-left: 20px; color: var(--sub); }
.notice { border: 1px solid rgba(224,58,58,.35); background: rgba(224,58,58,.11); border-radius: 18px; padding: 15px 16px; color: #ffdede; }
.identity-strip {
  background: linear-gradient(180deg, rgba(224,58,58,.13), rgba(255,255,255,.035));
  border: 1px solid rgba(224,58,58,.32);
  border-radius: 22px;
  padding: 22px;
}
.identity-strip h2 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 2.3vw, 1.9rem);
  letter-spacing: -.03em;
}
.identity-strip p {
  margin: 0;
  color: var(--sub);
}
strong { color: #fff; }

.footer { padding: 28px 0; color: var(--muted); }
.footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: var(--sub); }
.table-like { display: grid; gap: 10px; }
.row { display: grid; grid-template-columns: 160px 1fr; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: #101010; }
.row strong { color: #fff; }
.row span { color: var(--sub); }
@media (max-width: 900px) {
  .hero-grid, .split, .grid, .grid-3 { grid-template-columns: 1fr; }
  .nav-wrap { align-items: flex-start; flex-direction: column; }
  .nav-links { justify-content: flex-start; }
  .brand { min-width: 0; }
}
/* Manual page restored from v2.3.0 assets */
.manual-page .section-lead { margin-bottom: 26px; }

.manual-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.toc {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 112px);
  overflow-y: auto;
  background: linear-gradient(180deg, var(--panel2), #101010);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
}

.toc strong {
  display: block;
  margin-bottom: 10px;
}

.toc-section {
  border-top: 1px solid var(--line);
  padding-top: 10px;
  margin-top: 10px;
}

.toc-section:first-of-type {
  border-top: 0;
  margin-top: 2px;
  padding-top: 0;
}

.toc-section summary {
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-weight: 950;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.toc-section summary::-webkit-details-marker {
  display: none;
}

.toc-section summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #ffd6d6;
  font-weight: 950;
}

.toc-section[open] summary::after {
  content: "−";
}

.toc-section a {
  display: block;
  color: var(--sub);
  font-size: .92rem;
  padding: 5px 0 5px 10px;
  border-left: 2px solid rgba(255,255,255,.08);
}

.toc-section a:first-of-type {
  margin-top: 8px;
}

.toc-section a:hover {
  color: #fff;
  border-left-color: var(--accent2);
}

.manual-stack {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.manual-category {
  margin-top: 8px;
  padding: 10px 14px;
  border: 1px solid rgba(224,58,58,.32);
  border-radius: 14px;
  background: rgba(224,58,58,.11);
  color: #ffdede;
  font-weight: 950;
}

.manual-card {
  scroll-margin-top: 96px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
}

.manual-card h3 {
  margin: 0 0 9px;
  font-size: 1.15rem;
  line-height: 1.35;
}

.manual-card p {
  margin: 0;
  color: var(--sub);
}

.manual-card ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--sub);
}

.manual-card li {
  margin: 4px 0;
}

.manual-media {
  margin-top: 16px;
  display: grid;
  gap: 14px;
}

.manual-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.manual-figure,
.manual-video-box {
  margin: 0;
  background: #080808;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.manual-figure a {
  display: block;
}

.manual-figure img {
  width: 100%;
  height: auto;
  display: block;
  background: #050505;
}

.manual-video-box video {
  width: 100%;
  display: block;
  background: #050505;
}

.manual-caption {
  padding: 9px 11px;
  color: var(--sub);
  font-size: .9rem;
  border-top: 1px solid var(--line);
}

.warning-box {
  margin-top: 14px;
  padding: 14px;
  border-radius: 15px;
  border: 1px solid rgba(224,58,58,.36);
  background: rgba(224,58,58,.10);
}

.warning-box strong {
  display: block;
  color: #ffdede;
  margin-bottom: 4px;
}

.warning-box p {
  margin: 0;
  color: #ffdede;
}

@media (max-width: 980px) {
  .manual-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: relative;
    top: auto;
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 720px) {
  .manual-media-grid {
    grid-template-columns: 1fr;
  }
}