/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── VARIABLES ── */
:root {
  --black: #0a0a0a;
  --deep: #111215;
  --surface: #16181c;
  --border: #2a2d35;
  --gold: #c9a84c;
  --gold-dim: #8a6e2f;
  --gold-light: #e8c97a;
  --text: #d4cfc4;
  --text-dim: #7a7670;
  --white: #f0ebe0;
  --font-serif: Georgia, 'Times New Roman', 'Palatino Linotype', Palatino, serif;
  --font-mono: 'Courier New', Courier, 'Lucida Console', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0; opacity: 0.4;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
}
.nav-inner {
  max-width: 860px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.nav-brand {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: var(--gold);
  text-decoration: none; text-transform: uppercase;
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.15em; color: var(--text-dim);
  text-decoration: none; text-transform: uppercase; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }

/* ── HOMEPAGE HEADER ── */
header {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center; padding: 4rem 2rem; overflow: hidden;
}
header::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 60%, rgba(201,168,76,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 80% 30% at 50% 100%, rgba(201,168,76,0.04) 0%, transparent 60%);
}
.wheel-bg {
  position: absolute; width: 700px; height: 700px;
  border-radius: 50%; border: 1px solid rgba(201,168,76,0.06);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  animation: slowspin 60s linear infinite;
}
.wheel-bg::before {
  content: ''; position: absolute; inset: 40px;
  border-radius: 50%; border: 1px solid rgba(201,168,76,0.04);
}
.wheel-bg::after {
  content: ''; position: absolute; inset: 100px;
  border-radius: 50%; border: 1px solid rgba(201,168,76,0.03);
}
@keyframes slowspin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}
.header-inner { position: relative; z-index: 1; max-width: 720px; }

/* ── PAGE HERO (subpages) ── */
.page-hero {
  padding: 10rem 2rem 5rem;
  text-align: center; position: relative; z-index: 1;
}

/* ── TYPOGRAPHY ── */
.eyebrow {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.25em; color: var(--gold);
  text-transform: uppercase; margin-bottom: 2rem;
  opacity: 0; animation: fadein 1s ease 0.3s forwards;
}
.page-hero .eyebrow { opacity: 1; animation: none; margin-bottom: 1.5rem; }

h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 300; line-height: 1.05;
  color: var(--white); letter-spacing: -0.01em; margin-bottom: 1.5rem;
  opacity: 0; animation: fadein 1s ease 0.6s forwards;
}
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 4rem); opacity: 1; animation: none; }
h1 em { font-style: italic; color: var(--gold-light); }

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300; color: var(--white); line-height: 1.2; margin-bottom: 1.2rem;
}
h2 em { font-style: italic; color: var(--gold-light); }
.content h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin: 3.5rem 0 1.2rem; }

p { margin-bottom: 1.4rem; font-weight: 300; }

.subtitle {
  font-size: 1.1rem; color: var(--text-dim); max-width: 480px;
  margin: 0 auto 3rem; font-weight: 300;
  opacity: 0; animation: fadein 1s ease 0.9s forwards;
}
.lead { font-size: 1.1rem; color: var(--text-dim); max-width: 560px; margin: 0 auto; font-weight: 300; }

/* ── BUTTONS ── */
.cta-group {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  opacity: 0; animation: fadein 1s ease 1.2s forwards;
}
.btn-primary {
  display: inline-block; background: var(--gold); color: var(--black);
  padding: 0.85rem 2.2rem; font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  text-decoration: none; transition: background 0.3s, transform 0.2s;
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-secondary {
  display: inline-block; border: 1px solid var(--border); color: var(--text-dim);
  padding: 0.85rem 2.2rem; font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  text-decoration: none; transition: border-color 0.3s, color 0.3s;
}
.btn-secondary:hover { border-color: var(--gold-dim); color: var(--gold); }

/* ── SCROLL HINT ── */
.scroll-hint {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  opacity: 0; animation: fadein 1s ease 2s forwards;
}
.scroll-hint span {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; color: var(--text-dim); text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--gold-dim), transparent);
  animation: scrollpulse 2s ease infinite;
}
@keyframes scrollpulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }

/* ── LAYOUT ── */
section { position: relative; z-index: 1; }
.container { max-width: 860px; margin: 0 auto; padding: 0 2rem; }
.content { max-width: 720px; margin: 0 auto; padding: 4rem 2rem; position: relative; z-index: 1; }

/* ── DIVIDER ── */
.divider {
  display: flex; align-items: center; gap: 1.5rem;
  margin: 5rem auto; max-width: 860px; padding: 0 2rem;
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.divider-icon { color: var(--gold-dim); font-size: 1.2rem; }

/* ── INTRO ── */
.intro { padding: 6rem 0 4rem; }
.intro-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; margin-bottom: 1.5rem;
}

/* ── STATS ── */
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--border); border: 1px solid var(--border); margin: 4rem 0;
}
.stat { background: var(--surface); padding: 2.5rem 2rem; text-align: center; }
.stat-number { font-size: 2.8rem; font-weight: 300; color: var(--gold); line-height: 1; margin-bottom: 0.5rem; }
.stat-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.15em; color: var(--text-dim); text-transform: uppercase;
}

/* ── FEATURES ── */
.features { padding: 2rem 0 6rem; }
.features-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; margin-bottom: 1.5rem;
}
.feature-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1px; background: var(--border); border: 1px solid var(--border);
}
.feature-item {
  background: var(--deep); padding: 2.5rem;
  position: relative; overflow: hidden; transition: background 0.3s;
}
.feature-item:hover { background: var(--surface); }
.feature-item::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 2px; height: 0; background: var(--gold); transition: height 0.4s ease;
}
.feature-item:hover::before { height: 100%; }
.feature-number {
  font-family: var(--font-mono); font-size: 0.6rem;
  color: var(--gold-dim); letter-spacing: 0.2em; margin-bottom: 1rem;
}
.feature-title { font-size: 1.2rem; font-weight: 400; color: var(--white); margin-bottom: 0.8rem; }
.feature-desc { font-size: 0.95rem; color: var(--text-dim); font-weight: 300; line-height: 1.6; }
.feature-link {
  display: inline-block; margin-top: 1.2rem;
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.12em; color: var(--gold); text-decoration: none; text-transform: uppercase;
}

/* ── QUOTE ── */
.quote-section { padding: 5rem 0; text-align: center; }
blockquote {
  font-size: clamp(1.4rem, 3vw, 2rem); font-style: italic; font-weight: 300;
  color: var(--text); line-height: 1.4; max-width: 640px; margin: 0 auto 1.5rem; position: relative;
}
blockquote::before {
  content: '«'; color: var(--gold-dim); font-size: 4rem;
  position: absolute; top: -1rem; left: -2rem; line-height: 1;
}
.quote-source {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: var(--text-dim); text-transform: uppercase;
}

/* ── CTA SECTION ── */
.cta-section { padding: 6rem 0; text-align: center; position: relative; }
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(201,168,76,0.04) 0%, transparent 70%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section p { color: var(--text-dim); margin-bottom: 2.5rem; font-size: 1rem; }

/* ── INLINE CTA ── */
.inline-cta { text-align: center; padding: 4rem 0; border-top: 1px solid var(--border); margin-top: 3rem; }
.inline-cta h3 { font-size: 1.6rem; font-weight: 300; color: var(--white); margin-bottom: 0.8rem; }
.inline-cta p { color: var(--text-dim); margin-bottom: 2rem; font-size: 0.95rem; }

/* ── FORMULA ── */
.formula {
  background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--gold);
  padding: 2rem 2.5rem; margin: 2.5rem 0;
  font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.8; color: var(--text);
}
.formula-label {
  font-size: 0.58rem; letter-spacing: 0.2em; color: var(--gold);
  text-transform: uppercase; margin-bottom: 0.8rem;
}
.formula-main { font-size: 1.1rem; color: var(--white); margin-bottom: 0.5rem; }

/* ── TABLES ── */
.prob-table, .prog-table {
  width: 100%; border-collapse: collapse; margin: 2.5rem 0;
  font-family: var(--font-mono); font-size: 0.78rem;
}
.prob-table th, .prog-table th {
  background: var(--surface); color: var(--gold);
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 1rem 1.2rem; text-align: left; border-bottom: 1px solid var(--gold-dim);
}
.prob-table td, .prog-table td {
  padding: 0.9rem 1.2rem; border-bottom: 1px solid var(--border); color: var(--text);
}
.prob-table tr:hover td, .prog-table tr:hover td { background: var(--surface); }
.danger { color: #e05555; }

/* ── CALLOUT ── */
.callout {
  background: rgba(201,168,76,0.05); border: 1px solid var(--gold-dim);
  padding: 2rem 2.5rem; margin: 2.5rem 0;
}
.callout-title {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; margin-bottom: 0.8rem;
}
.callout p { margin-bottom: 0; }

/* ── WARNING ── */
.warning {
  background: rgba(224,85,85,0.05); border: 1px solid rgba(224,85,85,0.3);
  border-left: 3px solid #e05555; padding: 2rem 2.5rem; margin: 2.5rem 0;
}
.warning-title {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.2em; color: #e05555; text-transform: uppercase; margin-bottom: 0.8rem;
}
.warning p { margin-bottom: 0; }

/* ── SYSTEM CARDS ── */
.systems {
  display: flex; flex-direction: column;
  gap: 1px; background: var(--border); border: 1px solid var(--border); margin: 2.5rem 0;
}
.system-card {
  background: var(--deep); padding: 2.5rem;
  position: relative; overflow: hidden; transition: background 0.3s;
}
.system-card:hover { background: var(--surface); }
.system-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--gold-dim); transition: background 0.3s;
}
.system-card:hover::before { background: var(--gold); }
.system-name {
  font-family: var(--font-mono); font-size: 0.7rem;
  letter-spacing: 0.15em; color: var(--gold); text-transform: uppercase; margin-bottom: 0.6rem;
}
.system-title { font-size: 1.3rem; font-weight: 400; color: var(--white); margin-bottom: 0.8rem; }
.system-desc { font-size: 0.95rem; color: var(--text-dim); line-height: 1.6; margin-bottom: 1rem; }
.system-sequence {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--text);
  background: var(--black); padding: 0.6rem 1rem; display: inline-block; border: 1px solid var(--border);
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border); padding: 2.5rem 2rem;
  text-align: center; position: relative; z-index: 1;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  max-width: 860px; margin: 0 auto; flex-wrap: wrap; gap: 1rem;
}
.footer-brand {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.15em; color: var(--text-dim); text-transform: uppercase;
}
.footer-links { display: flex; gap: 2rem; list-style: none; }
.footer-links a {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.12em; color: var(--text-dim);
  text-decoration: none; text-transform: uppercase; transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }

/* ── ANIMATIONS ── */
@keyframes fadein {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .stats { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .nav-links { display: none; }
  blockquote::before { left: 0; }
}