:root {
  --accent: #f5c542;
  --accent-soft: #f5c5422e;
  --bg: #0e1414;
  --bg-2: #141c1c;
  --bg-3: #1b2625;
  --ink: #f6f1e4;
  --ink-dim: #c7d0c6;
  --ink-mute: #82908a;
  --line: #31403d;
  --line-soft: #22302e;
  --green: #4caf7d;
  --blue: #5b9cf6;
  --red: #ef6b73;
  --radius: 18px;
  --radius-sm: 10px;
  --maxw: 1320px;
  --article-w: 820px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(to bottom, rgba(14,20,20,0.82), rgba(14,20,20,0.94)),
    url('/assets/scaled/map_illustrated.webp');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  color: var(--ink);
  font-family: 'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
.moe-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px) saturate(1.2);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line-soft);
}
.moe-nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
@media (min-width: 768px) { .moe-nav-inner { padding: 14px 32px; } }
.moe-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; }
.moe-brand svg { flex-shrink: 0; }
.moe-nav-sep { width: 1px; height: 20px; background: var(--line); flex-shrink: 0; }
.moe-nav-crumb { font-size: 13px; color: var(--ink-mute); }
.moe-nav-back {
  margin-left: auto;
  font-size: 13px;
  color: var(--ink-dim);
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.moe-nav-back:hover { color: var(--ink); border-color: var(--accent); }
.blog-hero {
  border-bottom: 1px solid var(--line-soft);
  padding: 56px 20px 48px;
  text-align: center;
}
.blog-hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.blog-hero h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(30px, 5vw, 58px);
  font-weight: 700;
  line-height: 1.12;
  color: var(--ink);
  margin: 0 auto 20px;
  max-width: 780px;
}
.blog-hero-lead {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--ink-dim);
  max-width: 680px;
  margin: 0 auto 28px;
}
.blog-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-mute);
}
.blog-meta-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-mute); }
.blog-article {
  max-width: var(--article-w);
  margin: 0 auto;
  padding: 48px 20px 80px;
}
@media (min-width: 768px) { .blog-article { padding: 64px 32px 100px; } }
.blog-article h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 700;
  line-height: 1.18;
  color: var(--ink);
  margin: 64px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.blog-article h2:first-child { margin-top: 0; }
.blog-article h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(19px, 2.5vw, 25px);
  font-weight: 650;
  line-height: 1.25;
  color: var(--accent);
  margin: 36px 0 12px;
}
.blog-article h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin: 24px 0 8px;
}
.blog-article p { font-size: 16px; color: var(--ink-dim); margin: 0 0 16px; }
.blog-article p strong, .blog-article li strong { color: var(--ink); font-weight: 650; }
.blog-article ul, .blog-article ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--ink-dim);
  font-size: 16px;
}
.blog-article li { margin-bottom: 8px; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  color: var(--accent);
  background: rgba(245, 197, 66, 0.1);
  border: 1px solid rgba(245, 197, 66, 0.18);
  border-radius: 5px;
  padding: 1px 5px;
}
.blog-toc {
  background: rgba(27, 38, 37, 0.74);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 48px;
}
.blog-toc-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 12px;
}
.blog-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  columns: 1;
}
@media (min-width: 620px) { .blog-toc-list { columns: 2; column-gap: 28px; } }
.blog-toc-list li { margin-bottom: 8px; break-inside: avoid; }
.blog-toc-list a {
  font-size: 14px;
  color: var(--ink-dim);
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.blog-toc-list a:hover { color: var(--accent); }
.blog-toc-list a::before {
  content: attr(data-n);
  font-size: 11px;
  color: var(--ink-mute);
  flex-shrink: 0;
  width: 18px;
}
.callout {
  background: rgba(27, 38, 37, 0.74);
  backdrop-filter: blur(8px);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 24px 0;
}
.callout-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.callout p { margin: 0; font-size: 15px; }
.callout.tip { border-left-color: var(--green); }
.callout.tip .callout-label { color: var(--green); }
.callout.info { border-left-color: var(--blue); }
.callout.info .callout-label { color: var(--blue); }
.phone-frame {
  width: 238px;
  aspect-ratio: 0.49;
  background: #1b2625;
  border-radius: 40px;
  padding: 8px;
  box-shadow: 0 40px 80px -20px rgba(0,0,0,.72), inset 0 0 0 1.5px #3a4c48;
  position: relative;
  flex-shrink: 0;
}
@media (min-width: 480px) { .phone-frame { width: 260px; } }
.phone-notch {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 22px;
  background: #090f0f;
  border-radius: 999px;
  z-index: 3;
}
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
  position: relative;
  background: #090f0f;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.ss-center {
  display: flex;
  justify-content: center;
  margin: 30px 0;
}
.ss-row {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
  margin: 30px 0;
}
@media (min-width: 680px) { .ss-row { flex-wrap: nowrap; gap: 28px; } }
.ss-caption {
  text-align: center;
  font-size: 13px;
  color: var(--ink-mute);
  margin: 12px auto 0;
  max-width: 280px;
}
.puzzle-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid color-mix(in oklab, var(--accent) 30%, transparent);
  vertical-align: middle;
}
.fit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 18px 0 22px;
}
@media (min-width: 620px) { .fit-grid { grid-template-columns: repeat(3, 1fr); } }
.fit-card {
  background: rgba(27, 38, 37, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.fit-card strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
  margin-bottom: 4px;
}
.fit-card span { display: block; color: var(--ink-dim); font-size: 13px; line-height: 1.45; }
.field-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 22px;
  font-size: 14px;
}
.field-table th {
  text-align: left;
  padding: 10px 12px;
  background: rgba(27, 38, 37, 0.82);
  color: var(--ink-dim);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--line);
}
.field-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-dim);
  vertical-align: top;
}
.field-table td:first-child { color: var(--ink); font-weight: 650; width: 32%; }
.example-box {
  background: rgba(27, 38, 37, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 22px 0;
}
.example-box-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.example-box p:last-child, .example-box ul:last-child { margin-bottom: 0; }
.choice-demo {
  background: rgba(27, 38, 37, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin: 24px 0;
}
.choice-demo-title {
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 12px;
}
.choice-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-dim);
  font-size: 15px;
}
.choice-row:last-child { border-bottom: 0; }
.choice-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1.5px solid var(--line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ink);
  flex-shrink: 0;
}
.choice-row.correct .choice-mark {
  background: color-mix(in oklab, var(--green) 22%, transparent);
  border-color: var(--green);
  color: var(--green);
}
.choice-row.wrong .choice-mark {
  background: color-mix(in oklab, var(--red) 16%, transparent);
  border-color: color-mix(in oklab, var(--red) 60%, var(--line));
  color: var(--red);
}
.answer-demo {
  background: rgba(27, 38, 37, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 16px 0 22px;
}
.answer-type-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}
.answer-type-row:last-child { margin-bottom: 0; }
.answer-badge {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}
.answer-desc { font-size: 14px; color: var(--ink-dim); }
.blog-divider { height: 1px; background: var(--line); margin: 52px 0; }
.blog-footer {
  border-top: 1px solid var(--line-soft);
  padding: 32px 20px;
  text-align: center;
  font-size: 13px;
  color: var(--ink-mute);
}
.blog-footer a { color: var(--ink-dim); }
.blog-footer a:hover { color: var(--ink); }
.blog-footer-links { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }

.moe-lang { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; margin-left: 8px; flex-shrink: 0; }
.moe-lang-btn { padding: 5px 10px; font-size: 11px; font-weight: 700; letter-spacing: 0.08em; color: var(--ink-dim); text-decoration: none; }
.moe-lang-btn.active { background: var(--accent); color: #111; }
.moe-lang-btn:hover:not(.active) { color: var(--ink); background: rgba(27,38,37,0.78); }
@media (max-width: 560px) { .moe-nav-crumb, .moe-nav-sep { display: none; } .moe-nav-back { padding: 6px 9px; } .moe-lang-btn { padding: 5px 8px; } }