/* CS Skin Guide — deep slate + teal (distinct from skinsmopkey coral and skinmode amber). */
:root {
  --bg: #0c141a;
  --bg-2: #101a22;
  --surface: #15222c;
  --surface-2: #1b2b38;
  --ink: #e8f1f6;
  --muted: #8fa3b0;
  --faint: #6a7d8a;
  --line: #243644;
  --accent: #2ec4b6;
  --accent-deep: #1fa89c;
  --accent-soft: #143038;
  --accent-ink: #041312;
  --ok: #6fbf8f;
  --alert: #e8b45a;
  --wrap: 1080px;
  --gutter: clamp(16px, 4vw, 28px);
  --radius: 12px;
  --font-display: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --font-body: Georgia, "Times New Roman", "Liberation Serif", serif;
  --font-ui: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  background:
    radial-gradient(700px 320px at 95% 0%, #16353a 0%, transparent 55%),
    radial-gradient(520px 260px at 0% 15%, #122836 0%, transparent 50%),
    var(--bg);
  color: var(--ink);
  font: 17px/1.7 var(--font-body);
}
img, svg { max-width: 100%; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #7eefe4; }
a:focus-visible, summary:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.7rem;
}
h1 { font-size: clamp(1.9rem, 3.8vw, 2.7rem); }
h2 { font-size: clamp(1.3rem, 2.1vw, 1.75rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1rem; }
.wrap { width: min(var(--wrap), calc(100% - 2 * var(--gutter))); margin-inline: auto; }
.skip {
  position: absolute; left: 12px; top: -80px; z-index: 20;
  background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: 8px;
  font-family: var(--font-ui);
}
.skip:focus { top: 10px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--accent); font-family: var(--font-ui); font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.6rem;
}

.site-header {
  position: sticky; top: 0; z-index: 15;
  background: rgba(12, 20, 26, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-ui);
}
.head-row {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 14px 0;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--ink); min-width: 180px;
}
.brand-mark { border-radius: 10px; }
.brand-name {
  display: flex; flex-direction: column; gap: 2px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; line-height: 1.15;
}
.brand-name small { font-weight: 500; font-size: 0.72rem; color: var(--muted); letter-spacing: 0; font-family: var(--font-ui); }

.main-nav { display: flex; flex-wrap: wrap; gap: 6px 14px; flex: 1; }
.main-nav a {
  color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 600;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

.hero { padding: 2.4rem 0 1.5rem; }
.hero-grid {
  display: grid; gap: 2rem; align-items: start;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.not-official {
  display: inline-block; margin: 0 0 0.85rem;
  background: var(--accent-soft); color: #9ef0e6; border: 1px solid #1f4a4a;
  padding: 6px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 700;
  font-family: var(--font-ui);
}
.lead { font-size: 1.12rem; color: var(--muted); max-width: 46ch; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 1rem 0; font-family: var(--font-ui); }
.badges span {
  background: var(--surface); border: 1px solid var(--line); color: var(--muted);
  padding: 6px 11px; border-radius: 999px; font-size: 0.8rem; font-weight: 600;
}
.independence, .disclosure { color: var(--muted); font-size: 0.95rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 1.2rem 0 0.6rem; font-family: var(--font-ui); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-ink); text-decoration: none;
  font-weight: 700; padding: 12px 18px; border-radius: 8px; border: 1px solid transparent;
}
.btn:hover { background: #4ad8cb; color: var(--accent-ink); }
.btn-ghost {
  background: transparent; color: var(--ink); border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.meta { color: var(--faint); font-size: 0.85rem; font-family: var(--font-ui); }

.art {
  background: linear-gradient(165deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line); border-radius: 18px; padding: 16px;
  box-shadow: 0 22px 48px rgba(0,0,0,.4);
}
.art-kicker, .art-note { color: var(--faint); font-size: 0.8rem; margin: 0 0 0.6rem; font-family: var(--font-ui); }
.art figure { margin: 0; }
.art figcaption { color: var(--muted); font-size: 0.85rem; margin-top: 0.6rem; font-family: var(--font-ui); }
.art img { border-radius: 10px; background: #0a1218; }

.stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px;
  margin: 1.5rem 0 0.6rem; font-family: var(--font-ui);
}
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; gap: 6px;
}
.stat strong { font-size: 1.4rem; font-family: var(--font-display); color: var(--accent); }
.stat span { color: var(--muted); font-size: 0.88rem; }
.stats-note { color: var(--faint); font-size: 0.88rem; margin-bottom: 2rem; font-family: var(--font-ui); }

.section-block { padding: 2rem 0; border-top: 1px solid var(--line); }
.chapter-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 1rem;
}
@media (max-width: 700px) { .chapter-grid { grid-template-columns: 1fr; } }
.chapter-card {
  display: block; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 18px 16px; transition: border-color .15s, transform .15s;
}
.chapter-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.chapter-card .no {
  font-family: var(--font-display); font-weight: 700; color: var(--accent);
  font-size: 0.9rem; margin-bottom: 0.4rem;
}
.chapter-card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

.ready-list { display: grid; gap: 10px; margin-top: 1rem; }
.ready-item {
  display: grid; grid-template-columns: minmax(140px, 220px) 1fr; gap: 12px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  font-family: var(--font-ui);
}
@media (max-width: 640px) { .ready-item { grid-template-columns: 1fr; } }
.ready-item b { color: var(--ink); }
.ready-item span { color: var(--muted); font-family: var(--font-body); }

.example-table {
  width: 100%; border-collapse: collapse; margin: 1rem 0;
  background: var(--surface); border-radius: 12px; overflow: hidden;
  font-family: var(--font-ui);
}
.example-table th, .example-table td {
  text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line);
}
.example-table th { font-weight: 600; color: var(--muted); width: 70%; }
.example-table td { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--accent); }

.faq-list details {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 16px; margin-bottom: 8px; font-family: var(--font-ui);
}
.faq-list summary { cursor: pointer; font-weight: 700; }
.faq-list p { color: var(--muted); margin: 0.7rem 0 0; font-family: var(--font-body); }

.source-list { display: grid; gap: 10px; margin-top: 0.8rem; }
.source-item {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  font-family: var(--font-ui);
}
.source-item p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.92rem; font-family: var(--font-body); }
.source-item .meta { margin: 0.25rem 0 0; word-break: break-all; }

.cta-band {
  display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; align-items: center;
  background: linear-gradient(120deg, #143038, #122836 55%, #0e1c24);
  border: 1px solid #1f4a4a; border-radius: 16px; padding: 22px 24px;
}
.cta-band p { color: var(--muted); margin: 0; max-width: 48ch; }

.page-head { padding: 2rem 0 1rem; border-bottom: 1px solid var(--line); margin-bottom: 1.5rem; }
.crumbs { color: var(--faint); font-size: 0.88rem; margin-bottom: 0.8rem; font-family: var(--font-ui); }
.crumbs a { color: var(--muted); text-decoration: none; }
.reading {
  display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 2rem; align-items: start;
  padding-bottom: 3rem;
}
@media (max-width: 860px) { .reading { grid-template-columns: 1fr; } }
.toc {
  position: sticky; top: 80px; display: flex; flex-direction: column; gap: 8px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  font-family: var(--font-ui);
}
.toc a { color: var(--muted); text-decoration: none; font-size: 0.88rem; }
.toc a:hover { color: var(--accent); }
.prose h2 { margin-top: 2rem; }
.prose ul, .prose ol { color: var(--muted); }
.keybox {
  background: var(--accent-soft); border: 1px solid #1f4a4a; border-radius: 12px;
  padding: 16px 18px; margin-bottom: 1.5rem;
}
.keybox h2 { font-size: 1rem; color: var(--accent); margin-bottom: 0.5rem; }
.keybox ul { margin: 0; padding-left: 1.1rem; color: var(--ink); }
.steps { padding-left: 1.2rem; }
.steps li { margin-bottom: 0.7rem; }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 2rem; flex-wrap: wrap; }

.doc { padding: 2rem 0 3rem; max-width: 760px; }
.doc section { margin-top: 1.5rem; }
.doc .operator { margin-top: 1.5rem; }

.site-footer {
  border-top: 1px solid var(--line); background: var(--bg-2);
  padding: 2.5rem 0 1.5rem; margin-top: 2rem; color: var(--muted);
  font-family: var(--font-ui);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid nav { display: flex; flex-direction: column; gap: 8px; }
.footer-grid nav a { color: var(--muted); text-decoration: none; }
.footer-grid nav a:hover { color: var(--accent); }
.operator h2 { font-size: 0.95rem; color: var(--ink); }
.operator ul { list-style: none; padding: 0; margin: 0.4rem 0; }
.operator li { margin: 0.15rem 0; }
.copy { color: var(--faint); font-size: 0.85rem; border-top: 1px solid var(--line); padding-top: 1rem; }

/* Cookie consent banner (GDPR-style, localStorage only — no third-party trackers) */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  background: rgba(12, 20, 26, 0.96);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(12px);
  padding: 14px var(--gutter) 16px;
  font-family: var(--font-ui);
  box-shadow: 0 -8px 28px rgba(0,0,0,.35);
}
.cookie-banner[hidden] { display: none !important; }
.cookie-inner {
  width: min(var(--wrap), 100%);
  margin-inline: auto;
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between;
}
.cookie-inner p { margin: 0; color: var(--muted); font-size: 0.92rem; max-width: 68ch; line-height: 1.5; }
.cookie-inner strong { color: var(--ink); }
.cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie-actions .btn { padding: 10px 16px; font-size: 0.9rem; }
.cookie-actions .btn-ghost {
  background: transparent; color: var(--ink); border: 1px solid var(--line);
}
.cookie-actions .btn-ghost:hover { border-color: var(--accent); color: var(--accent); }