:root {
  --color-bg: #120f1a;
  --color-surface: #1d1729;
  --color-surface-alt: #251f34;
  --color-text: #f4efe6;
  --color-muted: #b8ad9f;
  --color-primary: #f4a641;
  --color-primary-dark: #c67520;
  --color-secondary: #8c7cff;
  --color-accent: #49e3c2;
  --color-border: rgba(244, 239, 230, 0.17);
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 32px;
  --shadow-soft: 0 28px 70px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(circle at 20% -10%, rgba(140, 124, 255, .22), transparent 34rem),
    radial-gradient(circle at 88% 12%, rgba(73, 227, 194, .13), transparent 28rem),
    linear-gradient(180deg, #120f1a 0%, #171321 42%, #100d16 100%);
  line-height: 1.65;
  min-width: 320px;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .13;
  background-image:
    linear-gradient(rgba(244,239,230,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,239,230,.08) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
  z-index: -1;
}
a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: #82ffe5; }
img { max-width: 100%; height: auto; display: block; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.skip-link {
  position: absolute; left: 16px; top: -100px; padding: 10px 14px; background: var(--color-accent); color: #071b18; z-index: 20; border-radius: var(--radius-sm);
}
.skip-link:focus { top: 16px; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(18, 15, 26, .78);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 0; }
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--color-text); text-decoration: none; font-weight: 850; letter-spacing: .02em;
}
.logo-mark { width: 34px; height: 34px; border-radius: 50%; background: conic-gradient(from 180deg, var(--color-primary), var(--color-secondary), var(--color-accent), var(--color-primary)); position: relative; box-shadow: 0 0 28px rgba(244, 166, 65, .28); }
.logo-mark::after { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--color-bg); border: 1px solid rgba(244,239,230,.3); }
.nav-list { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0; padding: 0; list-style: none; }
.nav-list a {
  display: inline-flex; padding: 9px 12px; border-radius: 999px; color: var(--color-muted); text-decoration: none; font-size: .94rem;
}
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--color-text); background: rgba(244,239,230,.08); }
.header-cta { display: inline-flex; }
.btn, button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 46px; padding: 12px 18px; border: 1px solid transparent;
  border-radius: 999px; font-weight: 800; font-size: .98rem; text-decoration: none;
  cursor: pointer; transition: transform .2s ease, border-color .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
}
.btn-primary { background: var(--color-primary); color: #211105; box-shadow: 0 14px 34px rgba(244, 166, 65, .22); }
.btn-primary:hover { color: #211105; background: #ffc46f; transform: translateY(-2px); }
.btn-secondary { color: var(--color-text); background: rgba(244,239,230,.06); border-color: var(--color-border); }
.btn-secondary:hover { color: var(--color-text); border-color: rgba(73,227,194,.55); transform: translateY(-2px); }
.btn-ghost { color: var(--color-accent); background: transparent; border-color: rgba(73,227,194,.3); }
.btn-ghost:hover { background: rgba(73,227,194,.08); color: #91ffe8; }
:focus-visible { outline: 3px solid rgba(73, 227, 194, .75); outline-offset: 3px; }

.hero { padding: 74px 0 46px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 42px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--color-accent); font-weight: 850; text-transform: uppercase; letter-spacing: .14em; font-size: .76rem; }
.kicker::before { content: ""; width: 26px; height: 2px; background: var(--color-accent); box-shadow: 0 0 14px var(--color-accent); }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.08; margin: 0 0 18px; color: var(--color-text); }
h1 { font-size: clamp(2.45rem, 6vw, 5.6rem); letter-spacing: -.06em; }
h2 { font-size: clamp(2rem, 4vw, 3.45rem); letter-spacing: -.045em; }
h3 { font-size: clamp(1.35rem, 2vw, 1.78rem); letter-spacing: -.02em; }
p { margin: 0 0 18px; color: var(--color-muted); }
.lead { font-size: clamp(1.12rem, 2vw, 1.36rem); color: #d9d1c4; max-width: 68ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 0; }
.hero-note { margin-top: 20px; display: flex; gap: 12px; align-items: flex-start; color: var(--color-muted); font-size: .95rem; }
.hero-note strong { color: var(--color-text); }
.section { padding: 68px 0; }
.section-tight { padding: 44px 0; }
.section-header { display: grid; grid-template-columns: .86fr 1.14fr; gap: 32px; align-items: end; margin-bottom: 34px; }
.section-header p { margin-bottom: 0; }

/* Thematic components */
.reactor-panel {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(244,239,230,.08), rgba(244,239,230,.02)),
    radial-gradient(circle at 52% 40%, rgba(244,166,65,.25), transparent 16rem),
    var(--color-surface);
  padding: clamp(20px, 3vw, 34px);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.reactor-panel::before, .reactor-panel::after {
  content: ""; position: absolute; inset: 18px; border-radius: inherit; pointer-events: none;
}
.reactor-panel::before { border: 1px dashed rgba(244,239,230,.16); }
.reactor-panel::after {
  background: conic-gradient(from 90deg, transparent, rgba(73,227,194,.18), transparent, rgba(244,166,65,.17), transparent);
  opacity: .72; mask: radial-gradient(circle, transparent 36%, #000 37%, #000 42%, transparent 43%);
  animation: slowSpin 18s linear infinite;
}
.reactor-core { position: relative; display: grid; place-items: center; min-height: 430px; }
.core-orbit {
  width: min(330px, 72vw); aspect-ratio: 1; border-radius: 50%;
  border: 1px solid rgba(244,239,230,.18);
  display: grid; place-items: center;
  background: radial-gradient(circle, rgba(73,227,194,.22), transparent 28%), radial-gradient(circle, rgba(244,166,65,.18), transparent 48%);
  box-shadow: inset 0 0 50px rgba(73,227,194,.08), 0 0 60px rgba(244,166,65,.12);
}
.core-center {
  width: 142px; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center;
  background: #17111f; border: 1px solid rgba(244,166,65,.55);
  color: var(--color-primary); font-weight: 900; text-align: center; text-transform: uppercase; letter-spacing: .08em; font-size: .78rem;
  box-shadow: 0 0 42px rgba(244,166,65,.22);
}
.prompt-capsule {
  display: inline-flex; align-items: center; gap: 9px; border: 1px solid rgba(73,227,194,.35);
  color: #dffaf4; border-radius: 999px; padding: 7px 11px;
  background: rgba(73,227,194,.08); font-size: .85rem; font-weight: 750;
}
.prompt-capsule::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 16px var(--color-accent); }
.core-tags { position: absolute; inset: 0; }
.core-tags .prompt-capsule { position: absolute; }
.core-tags .prompt-capsule:nth-child(1) { top: 12%; left: 3%; }
.core-tags .prompt-capsule:nth-child(2) { top: 26%; right: 0; }
.core-tags .prompt-capsule:nth-child(3) { bottom: 21%; left: 0; }
.core-tags .prompt-capsule:nth-child(4) { bottom: 10%; right: 7%; }
.semantic-coil {
  position: relative; border: 1px solid rgba(140,124,255,.32); border-radius: var(--radius-md);
  padding: 24px; background: linear-gradient(135deg, rgba(140,124,255,.12), rgba(29,23,41,.72));
  overflow: hidden;
}
.semantic-coil::before {
  content: ""; position: absolute; right: -70px; top: -64px; width: 180px; aspect-ratio: 1;
  border-radius: 50%; border: 22px double rgba(140,124,255,.14); transform: rotate(-18deg);
}
.quality-gate {
  position: relative; padding: 22px 22px 22px 54px; border-left: 4px solid var(--color-primary);
  background: linear-gradient(90deg, rgba(244,166,65,.12), rgba(244,239,230,.03)); border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.quality-gate::before { content: "✓"; position: absolute; left: 18px; top: 20px; color: var(--color-primary); font-weight: 900; }
.token-strip {
  display: flex; flex-wrap: wrap; gap: 10px; padding: 16px; border: 1px dashed rgba(244,239,230,.2); border-radius: var(--radius-md); background: rgba(244,239,230,.035);
}
.token { padding: 7px 10px; border-radius: 8px; background: rgba(244,239,230,.09); color: #e9e1d6; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .85rem; }
.signal-led { display: inline-flex; align-items: center; gap: 8px; color: var(--color-muted); font-size: .9rem; }
.signal-led::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 16px var(--color-accent); }
.content-ribbon { position: relative; padding-left: 26px; }
.content-ribbon::before { content: ""; position: absolute; left: 7px; top: .45em; bottom: .45em; width: 2px; background: linear-gradient(var(--color-primary), var(--color-secondary), var(--color-accent)); }

@keyframes slowSpin { to { transform: rotate(1turn); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 24px;
  background: linear-gradient(145deg, rgba(244,239,230,.07), rgba(244,239,230,.025));
  box-shadow: 0 16px 40px rgba(0,0,0,.16);
}
.card:nth-child(2n) { border-radius: 28px 14px 28px 14px; }
.card:nth-child(3n) { transform: translateY(10px); }
.card h3, .card h2 { margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }
.card-link { text-decoration: none; color: inherit; display: block; }
.card-link:hover { border-color: rgba(73,227,194,.44); transform: translateY(-2px); }
.mini-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.badge { display: inline-flex; align-items: center; border: 1px solid rgba(244,239,230,.16); color: #d7cdbf; border-radius: 999px; padding: 6px 10px; font-size: .82rem; }
.split { display: grid; grid-template-columns: .84fr 1.16fr; gap: 34px; align-items: start; }
.split-reverse { grid-template-columns: 1.14fr .86fr; }
.aside-panel { position: sticky; top: 98px; }
.note-box { border-radius: var(--radius-md); border: 1px solid rgba(73,227,194,.28); padding: 22px; background: rgba(73,227,194,.07); }
.note-box strong { color: var(--color-accent); }
.process-line { display: grid; gap: 16px; counter-reset: step; }
.process-step { counter-increment: step; position: relative; display: grid; grid-template-columns: 62px 1fr; gap: 18px; align-items: start; }
.process-step::before {
  content: counter(step, decimal-leading-zero); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--color-primary);
  border: 1px solid rgba(244,166,65,.42); border-radius: 16px; padding: 12px; text-align: center; background: rgba(244,166,65,.08); font-weight: 900;
}
.matrix { display: grid; grid-template-columns: 1.1fr repeat(3, .8fr); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: rgba(244,239,230,.035); }
.matrix > div { padding: 18px; border-bottom: 1px solid var(--color-border); border-right: 1px solid var(--color-border); }
.matrix > div:nth-child(4n) { border-right: 0; }
.matrix .head { background: rgba(244,166,65,.1); color: var(--color-text); font-weight: 900; }
.matrix .good { color: var(--color-accent); }
.matrix .warn { color: #ffd199; }
.checklist { display: grid; gap: 12px; padding: 0; list-style: none; margin: 0; }
.checklist li { position: relative; padding: 16px 16px 16px 46px; border: 1px solid rgba(244,239,230,.12); border-radius: var(--radius-md); background: rgba(244,239,230,.035); color: #d9d1c4; }
.checklist li::before { content: "✦"; position: absolute; left: 18px; color: var(--color-primary); }
.article-body { max-width: 78ch; }
.article-body h2 { margin-top: 46px; }
.article-body h3 { margin-top: 28px; }
.article-body ul, .article-body ol { color: var(--color-muted); padding-left: 1.2rem; }
.article-body li { margin: 8px 0; }
.quote-lab { padding: 26px; border-radius: var(--radius-lg); border: 1px solid rgba(140,124,255,.32); background: rgba(140,124,255,.08); font-size: 1.12rem; color: #e8e2ff; }
.format-board { display: grid; grid-template-columns: 1fr; gap: 14px; }
.format-row { display: grid; grid-template-columns: .72fr 1fr .72fr; gap: 16px; align-items: start; padding: 20px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgba(244,239,230,.04); }
.format-row h3 { font-size: 1.25rem; margin-bottom: 6px; }
.format-row p { margin-bottom: 0; }
.form-shell { border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: linear-gradient(145deg, rgba(244,239,230,.08), rgba(244,239,230,.025)); padding: 28px; box-shadow: var(--shadow-soft); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: grid; gap: 7px; color: #e5dccf; font-weight: 750; }
input, textarea, select {
  width: 100%; border: 1px solid rgba(244,239,230,.18); border-radius: 14px;
  padding: 13px 14px; color: var(--color-text); background: rgba(18,15,26,.72); font: inherit;
}
textarea { min-height: 138px; resize: vertical; }
.form-grid .full { grid-column: 1 / -1; }
.small-print { font-size: .9rem; color: var(--color-muted); }
.faq-list { display: grid; gap: 14px; }
details { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px 20px; background: rgba(244,239,230,.04); }
summary { cursor: pointer; color: var(--color-text); font-weight: 850; }
details p { margin: 14px 0 0; }
.footer { margin-top: 40px; border-top: 1px solid var(--color-border); padding: 34px 0; background: rgba(0,0,0,.12); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 24px; }
.footer a { color: var(--color-muted); text-decoration: none; }
.footer a:hover { color: var(--color-accent); }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-title { color: var(--color-text); font-weight: 850; margin-bottom: 10px; }
.breadcrumbs { padding: 20px 0 0; font-size: .92rem; color: var(--color-muted); }
.breadcrumbs a { color: var(--color-muted); text-decoration: none; }
.breadcrumbs span { color: var(--color-text); }
.page-hero { padding: 58px 0 34px; }
.page-hero .lead { max-width: 76ch; }
.lab-image { border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: rgba(244,239,230,.04); padding: 18px; box-shadow: var(--shadow-soft); }
.two-column-text { columns: 2; column-gap: 34px; }
.two-column-text p { break-inside: avoid; }
.comparison-card { display: grid; grid-template-columns: 1fr 1fr; gap: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.comparison-card > div { padding: 24px; }
.comparison-card > div:first-child { background: rgba(244,166,65,.08); }
.comparison-card > div:last-child { background: rgba(73,227,194,.06); }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat { padding: 20px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgba(244,239,230,.04); }
.stat strong { display: block; color: var(--color-primary); font-size: 1.75rem; font-family: var(--font-heading); line-height: 1.1; }

@media (max-width: 960px) {
  .hero-grid, .section-header, .split, .split-reverse, .footer-grid { grid-template-columns: 1fr; }
  .aside-panel { position: static; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .format-row { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 1fr; }
  .matrix > div, .matrix > div:nth-child(4n) { border-right: 0; }
  .matrix .head:not(:first-child) { display: none; }
  .header-inner { align-items: flex-start; flex-direction: column; }
  .header-cta { display: none; }
  .two-column-text { columns: 1; }
}
@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1160px); }
  .hero { padding-top: 42px; }
  .grid-3, .grid-2, .form-grid, .comparison-card, .stat-row { grid-template-columns: 1fr; }
  .nav-list { gap: 2px; }
  .nav-list a { padding: 8px 9px; font-size: .88rem; }
  .reactor-core { min-height: 360px; }
  .core-tags .prompt-capsule { position: static; margin: 4px; }
  .core-tags { display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-end; padding-top: 250px; }
  .process-step { grid-template-columns: 1fr; }
  h1 { letter-spacing: -.045em; }
}

.mt-18 { margin-top: 18px; }