/* Standalone guide pages — quiet, readable, brand-adjacent without app chrome noise */
:root {
  color-scheme: dark;
  --bg0: #07090c;
  --bg1: #0d1218;
  --ink: #eef3f1;
  --muted: rgba(238, 243, 241, 0.58);
  --line: rgba(238, 243, 241, 0.12);
  --accent: #00d4be;
  --accent-dim: rgba(0, 212, 190, 0.14);
  --card: rgba(255, 255, 255, 0.03);
  --serif-gap: 1.15;
  font-family: 'Sora', 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans', 'Noto Sans JP',
    'Noto Sans KR', 'Noto Sans SC', 'Noto Sans TC', 'Noto Sans Arabic', sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(0, 212, 190, 0.12), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(214, 122, 72, 0.1), transparent 50%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 40%, #05070a);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #7affe8;
}

.guide-shell {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 4rem;
}

.guide-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.guide-brand {
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--ink);
  text-decoration: none;
}

.guide-brand:hover {
  color: var(--accent);
}

.guide-top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.85rem;
}

.guide-top-nav a {
  color: var(--muted);
  text-decoration: none;
}

.guide-top-nav a:hover {
  color: var(--ink);
}

.guide-kicker {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.guide-h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.guide-lede {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: rgba(238, 243, 241, 0.82);
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0 0 1.5rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.guide-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin: 0 0 2rem;
}

.guide-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 190, 0.45);
  background: var(--accent-dim);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
}

.guide-btn:hover {
  background: rgba(0, 212, 190, 0.22);
  color: var(--ink);
}

.guide-cta-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.guide-toc {
  margin: 0 0 2.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--card);
}

.guide-toc h2 {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.guide-toc ol {
  margin: 0;
  padding-inline-start: 1.15rem;
  display: grid;
  gap: 0.35rem;
}

.guide-toc a {
  color: rgba(238, 243, 241, 0.85);
  text-decoration: none;
}

.guide-toc a:hover {
  color: var(--accent);
}

.guide-section {
  margin: 0 0 2.35rem;
  scroll-margin-top: 1.25rem;
}

.guide-section h2 {
  margin: 0 0 0.85rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.guide-section h3 {
  margin: 1.25rem 0 0.55rem;
  font-size: 1.05rem;
}

.guide-section p,
.guide-section li {
  line-height: 1.7;
  color: rgba(238, 243, 241, 0.86);
}

.guide-section p {
  margin: 0 0 1rem;
}

.guide-section ul,
.guide-section ol {
  margin: 0 0 1rem;
  padding-inline-start: 1.2rem;
}

.guide-section li + li {
  margin-top: 0.35rem;
}

.guide-callout {
  margin: 1rem 0 1.25rem;
  padding: 0.9rem 1rem;
  border-inline-start: 3px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 0.65rem 0.65rem 0;
  color: rgba(238, 243, 241, 0.9);
  line-height: 1.55;
}

.guide-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 0 0 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.guide-table th,
.guide-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
  line-height: 1.45;
}

.guide-table th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.guide-table tr:last-child td {
  border-bottom: 0;
}

.guide-inline-cta {
  margin: 1rem 0 1.25rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(0, 212, 190, 0.28);
  border-radius: 0.75rem;
  background: rgba(0, 212, 190, 0.06);
}

.guide-inline-cta a {
  font-weight: 600;
  text-decoration: none;
}

.guide-faq details {
  margin: 0 0 0.55rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--card);
}

.guide-faq summary {
  cursor: pointer;
  font-weight: 600;
}

.guide-faq details p {
  margin: 0.65rem 0 0;
}

.guide-related {
  margin: 2.5rem 0 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.guide-related h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.guide-related ul {
  margin: 0.75rem 0 0;
  padding-inline-start: 1.15rem;
}

.guide-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.9rem;
}

.guide-lang {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.guide-lang-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.guide-lang-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.guide-lang-list a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.guide-lang-list a.is-active,
.guide-lang-list a:hover {
  color: var(--accent);
}

.hub-grid {
  display: grid;
  gap: 0.85rem;
  margin: 1.25rem 0 2rem;
}

.hub-card {
  display: block;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--card);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.hub-card:hover {
  border-color: rgba(0, 212, 190, 0.4);
  background: rgba(0, 212, 190, 0.06);
}

.hub-card.is-planned {
  opacity: 0.72;
}

.hub-card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.hub-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--muted);
}

.hub-card .hub-card-meta {
  margin-top: 0.65rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

[dir='rtl'] .guide-callout {
  border-inline-start: 0;
  border-inline-end: 3px solid var(--accent);
  border-radius: 0.65rem 0 0 0.65rem;
}

@media (max-width: 640px) {
  .guide-shell {
    width: min(100% - 1.25rem, 720px);
  }
}