/* ============================================================
   POLMANI — Перевёрнутый Nexus
   Quiet-luxury / Apple aesthetic. Light default. Frosted glass.
   ============================================================ */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.85rem);
  --text-sm: clamp(0.85rem, 0.8rem + 0.3vw, 0.95rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.08rem);
  --text-lg: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.4vw, 3.4rem);
  --text-3xl: clamp(2.6rem, 1.4rem + 4vw, 5rem);
  --text-hero: clamp(3.4rem, 1rem + 8vw, 8.5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --radius-xl: 1rem; --radius-2xl: 1.5rem; --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 680px;
  --content-default: 1000px;
  --content-wide: 1240px;
  --content-full: 1440px;

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
}

/* LIGHT (default) — quiet luxury, warm off-white, refined ink, frosted glass */
:root, [data-theme='light'] {
  --color-bg: #f3f1ec;
  --color-bg-2: #ece9e2;
  --color-surface: rgba(255, 255, 255, 0.62);
  --color-surface-2: rgba(255, 255, 255, 0.46);
  --color-surface-3: rgba(24, 38, 42, 0.05);
  --color-border: rgba(24, 38, 42, 0.10);
  --color-border-2: rgba(24, 38, 42, 0.16);
  --color-text: #1b2a2e;
  --color-text-muted: #54656a;
  --color-text-faint: #8a979a;
  --color-text-inverse: #ffffff;

  --color-primary: #1f7a82;
  --color-primary-bright: #2a8f97;
  --color-primary-hover: #176067;
  --color-primary-deep: #0e4a4f;
  --color-primary-glow: rgba(31, 122, 130, 0.20);

  --color-blue: #2f6f9e;
  --color-purple: #7a52b3;
  --color-gold: #b98a1e;
  --color-green: #4f8a3a;
  --color-rose: #b1528f;
  --color-orange: #c06a2a;

  /* Glass tokens */
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-blur: 22px;
  --glass-sat: 180%;
  --glass-hi: rgba(255, 255, 255, 0.9);

  --grad-hero: radial-gradient(ellipse 130% 90% at 50% -10%, #ffffff 0%, #f3f1ec 48%, #e9e6df 100%);
  --shadow-sm: 0 1px 2px rgba(27,42,46,0.05);
  --shadow-md: 0 10px 30px rgba(27,42,46,0.09);
  --shadow-lg: 0 24px 70px rgba(27,42,46,0.13);
  --shadow-glass: 0 8px 32px rgba(27,42,46,0.10), inset 0 1px 0 var(--glass-hi);
  --shadow-glow: 0 0 40px var(--color-primary-glow);
  --grid-line: rgba(31, 122, 130, 0.055);
  --aurora-1: rgba(120, 200, 205, 0.40);
  --aurora-2: rgba(170, 150, 220, 0.30);
  --aurora-3: rgba(225, 200, 150, 0.30);
}

/* DARK (optional) — deep slate, glass retained */
[data-theme='dark'] {
  --color-bg: #0c1113;
  --color-bg-2: #0f1518;
  --color-surface: rgba(28, 39, 44, 0.55);
  --color-surface-2: rgba(28, 39, 44, 0.40);
  --color-surface-3: rgba(255, 255, 255, 0.06);
  --color-border: rgba(255, 255, 255, 0.10);
  --color-border-2: rgba(255, 255, 255, 0.16);
  --color-text: #e9eff0;
  --color-text-muted: #9fb0b5;
  --color-text-faint: #62757a;
  --color-text-inverse: #0c1113;

  --color-primary: #4fb0ba;
  --color-primary-bright: #6ccad3;
  --color-primary-hover: #82d6de;
  --color-primary-deep: #1f7a82;
  --color-primary-glow: rgba(79, 176, 186, 0.30);

  --color-blue: #5aa0d6;
  --color-purple: #ac86e0;
  --color-gold: #e0b04a;
  --color-green: #74b352;
  --color-rose: #d479b3;
  --color-orange: #f0a857;

  --glass-bg: rgba(28, 39, 44, 0.45);
  --glass-bg-strong: rgba(28, 39, 44, 0.68);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-blur: 22px;
  --glass-sat: 160%;
  --glass-hi: rgba(255, 255, 255, 0.10);

  --grad-hero: radial-gradient(ellipse 130% 90% at 50% -10%, #16242a 0%, #0c1113 55%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 10px 30px rgba(0,0,0,0.45);
  --shadow-lg: 0 24px 70px rgba(0,0,0,0.55);
  --shadow-glass: 0 8px 32px rgba(0,0,0,0.40), inset 0 1px 0 var(--glass-hi);
  --shadow-glow: 0 0 40px var(--color-primary-glow);
  --grid-line: rgba(79, 176, 186, 0.06);
  --aurora-1: rgba(40, 120, 130, 0.30);
  --aurora-2: rgba(90, 70, 140, 0.26);
  --aurora-3: rgba(120, 95, 50, 0.22);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  transition: background-color 400ms ease, color 400ms ease;
}

/* ---------- Animated aurora background (quiet-luxury shifting glass) ---------- */
.aurora {
  position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden;
  background: var(--color-bg);
}
.aurora::before, .aurora::after {
  content: ''; position: absolute; border-radius: 50%;
  filter: blur(70px); will-change: transform;
}
.aurora::before {
  width: 60vw; height: 60vw; left: -10vw; top: -12vh;
  background: radial-gradient(circle at 30% 30%, var(--aurora-1), transparent 62%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
.aurora::after {
  width: 55vw; height: 55vw; right: -12vw; bottom: -16vh;
  background: radial-gradient(circle at 60% 40%, var(--aurora-2), transparent 62%);
  animation: drift-b 32s ease-in-out infinite alternate;
}
.aurora .blob3 {
  position: absolute; width: 48vw; height: 48vw; left: 32vw; top: 36vh;
  border-radius: 50%; filter: blur(80px);
  background: radial-gradient(circle at 50% 50%, var(--aurora-3), transparent 60%);
  animation: drift-c 38s ease-in-out infinite alternate;
}
.aurora .grain {
  position: absolute; inset: 0; opacity: 0.5; mix-blend-mode: overlay;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 90% at 50% 30%, #000 20%, transparent 85%);
}
@keyframes drift-a { from { transform: translate3d(0,0,0) scale(1);} to { transform: translate3d(8vw,6vh,0) scale(1.15);} }
@keyframes drift-b { from { transform: translate3d(0,0,0) scale(1.05);} to { transform: translate3d(-7vw,-5vh,0) scale(1);} }
@keyframes drift-c { from { transform: translate3d(0,0,0) scale(1);} to { transform: translate3d(-6vw,7vh,0) scale(1.2);} }

/* Tinted chapters: translucent so the aurora shimmers through */
.chapter-tint {
  background: color-mix(in srgb, var(--color-bg-2) 52%, transparent);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.chapter-tint::before {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--color-bg-2) 22%, transparent) 50%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .aurora::before, .aurora::after, .aurora .blob3 { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* Reusable glass surface */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: -0.02em;
}
p { text-wrap: pretty; }

::selection { background: var(--color-primary-glow); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ---------- Layout primitives ---------- */
.wrap { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }
.wrap-narrow { max-width: var(--content-default); }

section.chapter {
  position: relative;
  padding-block: clamp(var(--space-20), 11vw, var(--space-32));
  scroll-margin-top: var(--space-16);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-primary-bright);
  margin-bottom: var(--space-5);
}
.eyebrow::before {
  content: ''; width: 28px; height: 1px; background: var(--color-primary); opacity: 0.7;
}
.section-num {
  font-family: var(--font-mono);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
}

h2.section-title {
  font-size: var(--text-2xl);
  max-width: 18ch;
  margin-bottom: var(--space-5);
}
.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 62ch;
  line-height: 1.55;
}

/* Reveal animation base (opacity/clip only — no CLS) */
.reveal { opacity: 0; }
.reveal.is-in { opacity: 1; }
.reveal-clip { clip-path: inset(0 0 100% 0); opacity: 0.4; }
.reveal-clip.is-in { clip-path: inset(0 0 0 0); opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-clip { opacity: 1 !important; clip-path: none !important; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Header / nav ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) clamp(var(--space-5), 4vw, var(--space-10));
  -webkit-backdrop-filter: blur(16px) saturate(var(--glass-sat));
  backdrop-filter: blur(16px) saturate(var(--glass-sat));
  background: color-mix(in srgb, var(--color-bg) 55%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 300ms ease, background 300ms ease, box-shadow 300ms ease;
}
.topbar.scrolled { border-bottom-color: var(--glass-border); background: var(--glass-bg-strong); box-shadow: var(--shadow-sm); }
.brand { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: 600; letter-spacing: 0.02em; }
.brand svg { width: 30px; height: 30px; color: var(--color-primary-bright); }
.brand .ver { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); padding: 2px 8px; border: 1px solid var(--color-border-2); border-radius: var(--radius-full); }
.nav-links { display: flex; gap: var(--space-6); align-items: center; }
.nav-links a { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition-interactive); }
.nav-links a:hover { color: var(--color-text); }
.theme-toggle {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--glass-border); border-radius: var(--radius-full);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  color: var(--color-text-muted);
  transition: var(--transition-interactive);
}
.theme-toggle:hover { color: var(--color-primary-bright); border-color: var(--color-primary); }
@media (max-width: 880px) { .nav-links { display: none; } }

/* Scroll progress bar */
.progress { position: fixed; top: 0; left: 0; height: 2px; width: 0%; z-index: 110;
  background: linear-gradient(90deg, var(--color-primary-deep), var(--color-primary-bright)); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  background: var(--grad-hero);
  overflow: hidden;
}
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-grid { position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000 30%, transparent 80%);
}
.hero-inner { position: relative; z-index: 3; width: 100%; }
.hero-inner .wrap { position: relative; }
.hero-inner .wrap::before {
  content: ''; position: absolute; inset: -12% -8% -12% -12%; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 75% 90% at 30% 50%, var(--color-bg) 18%, transparent 72%);
}
.hero-vignette { position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: radial-gradient(ellipse 60% 55% at 50% 50%, transparent 40%, var(--color-bg) 96%); }

.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-3); flex-wrap: wrap;
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--color-text-muted);
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
  -webkit-backdrop-filter: blur(14px) saturate(var(--glass-sat)); backdrop-filter: blur(14px) saturate(var(--glass-sat));
  box-shadow: var(--shadow-glass);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-green); box-shadow: 0 0 8px var(--color-green); }
.hero-badge span.sep { color: var(--color-text-faint); }
.hero h1 {
  font-size: var(--text-hero); font-weight: 700; line-height: 0.95;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-text) 20%, var(--color-primary) 80%, var(--color-primary-deep) 110%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-6);
}
.hero-sub { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 40ch; margin-bottom: var(--space-10); line-height: 1.5; }
.hero-sub b { color: var(--color-text); font-weight: 600; }
.hero-cta { display: flex; gap: var(--space-4); flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 500;
  transition: var(--transition-interactive);
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); font-weight: 600; box-shadow: 0 6px 20px var(--color-primary-glow); }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-2px); box-shadow: 0 10px 30px var(--color-primary-glow), var(--shadow-glow); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { border: 1px solid var(--glass-border); color: var(--color-text); background: var(--glass-bg); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.btn-ghost:hover { color: var(--color-primary); border-color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-glass); }

.scroll-hint {
  position: absolute; bottom: var(--space-8); left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint);
  letter-spacing: 0.1em;
}
.scroll-hint .chev { animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(6px);} }

/* ============================================================
   Generic cards / grid
   ============================================================ */
.card {
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  box-shadow: var(--shadow-glass);
  border-radius: var(--radius-xl); padding: var(--space-6);
  transition: var(--transition-interactive);
}
.card-glow:hover { border-color: var(--color-primary); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
.icon-chip {
  width: 46px; height: 46px; border-radius: var(--radius-md);
  display: grid; place-items: center; color: var(--color-primary-bright);
  background: color-mix(in oklab, var(--color-primary) 14%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  margin-bottom: var(--space-5);
}
.icon-chip svg { width: 22px; height: 22px; }

/* Concept (section 2) */
.concept-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-6); align-items: stretch; margin-top: var(--space-12); }
.concept-side { padding: var(--space-8); border-radius: var(--radius-2xl); border: 1px solid var(--glass-border); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); position: relative; overflow: hidden; }
.concept-side h3 { font-size: var(--text-xl); margin-bottom: var(--space-3); }
.concept-side .tag { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-text-faint); }
.concept-side p { color: var(--color-text-muted); margin-top: var(--space-3); }
.concept-nexus { opacity: 0.85; }
.concept-polmani { border-color: var(--color-primary); box-shadow: inset 0 0 60px color-mix(in oklab, var(--color-primary) 8%, transparent); }
.concept-arrow { display: grid; place-items: center; color: var(--color-primary-bright); min-width: 60px; }
.flow-dots { display: flex; gap: 6px; margin-top: var(--space-5); }
.flow-dots i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.concept-nexus .flow-dots i { background: var(--color-text-faint); }
.concept-polmani .flow-dots i { background: var(--color-primary); box-shadow: 0 0 8px var(--color-primary-glow); }

.principles { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); margin-top: var(--space-12); }
.principle { padding: var(--space-8); border-radius: var(--radius-2xl); border: 1px solid var(--glass-border); background: var(--glass-bg-strong); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); transition: var(--transition-interactive); }
.principle:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.principle .pn { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); letter-spacing: 0.12em; }
.principle h3 { font-size: var(--text-xl); margin: var(--space-3) 0; }
.principle p { color: var(--color-text-muted); }

.callout {
  margin-top: var(--space-12); padding: var(--space-8);
  border-left: 3px solid var(--color-primary); border-radius: var(--radius-lg);
  background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border-top: 1px solid var(--glass-border); border-right: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
  font-size: var(--text-lg); line-height: 1.5;
}
.callout b { color: var(--color-primary-bright); }

/* ============================================================
   System map (section 3)
   ============================================================ */
.sys-core { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin: var(--space-12) 0; }
.sys-node {
  border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: var(--space-5);
  background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  box-shadow: var(--shadow-glass); text-align: center; transition: var(--transition-interactive);
}
.sys-node:not(.primary):hover { transform: translateY(-2px); border-color: var(--color-primary); }
.sys-node.primary { grid-column: 1 / -1; border-color: color-mix(in srgb, var(--color-primary) 50%, var(--glass-border)); background: linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 14%, var(--glass-bg-strong)), var(--glass-bg-strong)); box-shadow: var(--shadow-glass), 0 0 50px var(--color-primary-glow); }
.sys-node .nm { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); }
.sys-node .sub { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 4px; }

.gateway-bar {
  margin: var(--space-4) 0 var(--space-12); padding: var(--space-4) var(--space-6);
  border: 1px dashed var(--color-border-2); border-radius: var(--radius-lg);
  display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap;
  font-size: var(--text-sm); color: var(--color-text-muted);
  background: var(--glass-bg); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.gateway-bar b { color: var(--color-text); font-family: var(--font-display); }
.gateway-bar code { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); background: color-mix(in oklab, var(--color-primary) 12%, transparent); padding: 2px 8px; border-radius: var(--radius-sm); }

.depts { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.dept {
  border: 1px solid var(--glass-border); border-radius: var(--radius-xl); padding: var(--space-6);
  background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  box-shadow: var(--shadow-glass); cursor: pointer; position: relative; overflow: hidden;
  transition: var(--transition-interactive);
}
.dept::after { content: ''; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--dept-color, var(--color-primary)); opacity: 0.8; }
.dept:hover, .dept.open { border-color: var(--dept-color, var(--color-primary)); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.dept-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3); }
.dept .code { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); letter-spacing: 0.1em; }
.dept h3 { font-size: var(--text-lg); margin: var(--space-2) 0; }
.dept .count { font-family: var(--font-mono); font-size: var(--text-xs); padding: 3px 9px; border-radius: var(--radius-full); background: var(--color-surface-3); color: var(--color-text); white-space: nowrap; }
.dept-agents { list-style: none; display: grid; gap: var(--space-2); margin-top: var(--space-4);
  max-height: 0; opacity: 0; overflow: hidden; transition: max-height 450ms var(--ease-out), opacity 350ms ease, margin-top 300ms ease; }
.dept.open .dept-agents, .dept:hover .dept-agents { max-height: 600px; opacity: 1; }
.dept-agents li { font-size: var(--text-sm); color: var(--color-text-muted); padding-left: var(--space-4); position: relative; line-height: 1.4; }
.dept-agents li::before { content: ''; position: absolute; left: 0; top: 0.65em; width: 5px; height: 5px; border-radius: 50%; background: var(--dept-color, var(--color-primary)); }
.dept-agents li b { color: var(--color-text); font-weight: 500; }
.dept-hint { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-4); }
.dept.open .dept-hint, .dept:hover .dept-hint { display: none; }

/* ============================================================
   Resilience (section 4)
   ============================================================ */
.reliability-stat {
  display: grid; grid-template-columns: auto 1fr; gap: var(--space-10); align-items: center;
  margin: var(--space-12) 0; padding: var(--space-10);
  border: 1px solid var(--glass-border); border-radius: var(--radius-2xl);
  background: var(--glass-bg-strong); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  box-shadow: var(--shadow-glass);
}
.big-num { font-family: var(--font-display); font-weight: 600; font-size: clamp(3.5rem, 8vw, 6.5rem); line-height: 1; color: var(--color-orange); font-variant-numeric: tabular-nums; }
.big-num small { font-size: 0.4em; color: var(--color-text-faint); }
.reliability-stat .desc { font-size: var(--text-lg); color: var(--color-text-muted); }
.reliability-stat .desc b { color: var(--color-text); }
.formula { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--color-primary-bright); margin-top: var(--space-3); }

.mech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.mech { padding: var(--space-5); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); transition: var(--transition-interactive); }
.mech:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.mech .mn { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); }
.mech h4 { font-size: var(--text-base); margin: var(--space-2) 0; font-family: var(--font-display); }
.mech p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.45; }

/* ============================================================
   Money / Payment (section 5)
   ============================================================ */
.sm-diagram { margin: var(--space-12) 0; padding: var(--space-8); border: 1px solid var(--glass-border); border-radius: var(--radius-2xl); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); overflow-x: auto; }
.sm-track { display: flex; align-items: center; gap: var(--space-2); min-width: 760px; flex-wrap: wrap; row-gap: var(--space-5); }
.sm-state {
  font-family: var(--font-mono); font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  border: 1px solid var(--glass-border); background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  color: var(--color-text); white-space: nowrap; transition: var(--transition-interactive); cursor: default;
}
.sm-state[data-kind="terminal-good"] { border-color: var(--color-green); }
.sm-state[data-kind="terminal-bad"] { border-color: var(--color-rose); }
.sm-state.active { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); box-shadow: var(--shadow-glow); transform: scale(1.06); }
.sm-arrow { color: var(--color-text-faint); flex-shrink: 0; }
.sm-arrow.active { color: var(--color-primary-bright); }
.sm-branch { display: flex; flex-direction: column; gap: var(--space-2); }
.sm-note { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-6); padding-left: var(--space-4); border-left: 2px solid var(--color-primary); }

.money-cols { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--space-6); margin-top: var(--space-6); }
.ledger { padding: var(--space-6); border: 1px solid var(--glass-border); border-radius: var(--radius-xl); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); }
.ledger h3 { font-size: var(--text-lg); margin-bottom: var(--space-4); }
.acct-list { display: grid; gap: var(--space-2); }
.acct { display: flex; align-items: baseline; gap: var(--space-3); font-size: var(--text-sm); padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); }
.acct:last-child { border-bottom: none; }
.acct .no { font-family: var(--font-mono); color: var(--color-primary-bright); min-width: 52px; }
.acct .lbl { color: var(--color-text-muted); }

.math-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.math-cell { padding: var(--space-5); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); background: var(--glass-bg-strong); text-align: center; }
.math-cell .v { font-family: var(--font-display); font-weight: 600; font-size: var(--text-2xl); color: var(--color-primary-bright); font-variant-numeric: tabular-nums; }
.math-cell .k { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-2); text-transform: uppercase; letter-spacing: 0.08em; }

/* ============================================================
   Open source (section 6)
   ============================================================ */
.lic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin: var(--space-10) 0; }
.lic { padding: var(--space-5); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); transition: var(--transition-interactive); }
.lic:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.lic .name { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); }
.lic .badge { font-family: var(--font-mono); font-size: var(--text-xs); padding: 2px 8px; border-radius: var(--radius-full); background: color-mix(in oklab, var(--color-green) 18%, transparent); color: var(--color-green); margin-top: var(--space-2); display: inline-block; }
.lic .role { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); line-height: 1.4; }

.ci-gate { margin-top: var(--space-10); border: 1px solid var(--glass-border); border-radius: var(--radius-xl); overflow: hidden; background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); }
.ci-head { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); font-family: var(--font-mono); font-size: var(--text-sm); }
.ci-head .file { color: var(--color-text-muted); }
.ci-body { padding: var(--space-5); font-family: var(--font-mono); font-size: var(--text-sm); line-height: 1.8; }
.ci-line { display: flex; gap: var(--space-3); align-items: baseline; }
.ci-line .st { font-weight: 600; }
.st.pass { color: var(--color-green); }
.st.block { color: var(--color-rose); }
.ci-line .pkg { color: var(--color-text); }
.ci-line .msg { color: var(--color-text-faint); }

/* ============================================================
   Roadmap (section 7)
   ============================================================ */
.roadmap-scroll { overflow-x: auto; padding-bottom: var(--space-5); margin-top: var(--space-12); scrollbar-width: thin; }
.timeline { display: flex; gap: var(--space-5); min-width: max-content; padding-bottom: var(--space-4); position: relative; }
.timeline::before { content: ''; position: absolute; left: 0; right: 0; top: 38px; height: 2px; background: linear-gradient(90deg, var(--color-primary-deep), var(--color-primary), var(--color-primary-deep)); opacity: 0.4; }
.phase { width: 280px; flex-shrink: 0; position: relative; }
.phase .marker { width: 16px; height: 16px; border-radius: 50%; background: var(--color-primary); border: 3px solid var(--color-bg); box-shadow: 0 0 0 3px var(--color-primary-glow); margin-left: var(--space-4); margin-bottom: var(--space-5); position: relative; z-index: 2; }
.phase .pcard { border: 1px solid var(--glass-border); border-radius: var(--radius-xl); padding: var(--space-5); background: var(--glass-bg); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); box-shadow: var(--shadow-glass); height: 100%; transition: var(--transition-interactive); }
.phase .pcard:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.phase .ph { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary-bright); letter-spacing: 0.1em; }
.phase h3 { font-size: var(--text-lg); margin: var(--space-2) 0; }
.phase .dur { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); margin-bottom: var(--space-3); }
.phase p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.45; }
.phase.special .marker { background: var(--color-purple); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-purple) 35%, transparent); }
.phase.special .ph { color: var(--color-purple); }

/* ============================================================
   Consilium (section 8)
   ============================================================ */
.consil-score { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-10); align-items: center; margin: var(--space-12) 0; }
.score-ring { display: grid; place-items: center; position: relative; }
.score-ring .val { position: absolute; text-align: center; }
.score-ring .val .n { font-family: var(--font-display); font-weight: 600; font-size: clamp(3rem,6vw,4.5rem); color: var(--color-primary-bright); line-height: 1; font-variant-numeric: tabular-nums; }
.score-ring .val .d { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 4px; letter-spacing: 0.08em; max-width: 130px; line-height: 1.3; }
.bars { display: grid; gap: var(--space-4); }
.bar-row { display: grid; grid-template-columns: 120px 1fr 60px; gap: var(--space-4); align-items: center; }
.bar-row .rl { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-muted); }
.bar-track { height: 10px; border-radius: var(--radius-full); background: var(--color-surface-3); overflow: hidden; border: 1px solid var(--glass-border); }
.bar-fill { height: 100%; width: 0%; border-radius: var(--radius-full); background: linear-gradient(90deg, var(--color-primary-deep), var(--color-primary-bright)); transition: width 1.1s var(--ease-out); }
.bar-row .rv { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--color-primary-bright); text-align: right; font-variant-numeric: tabular-nums; }
.critics { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-8); }
.critic { font-family: var(--font-mono); font-size: var(--text-xs); padding: var(--space-2) var(--space-4); border: 1px solid var(--glass-border); border-radius: var(--radius-full); color: var(--color-text); background: var(--glass-bg); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.consil-note { margin-top: var(--space-8); }

/* ============================================================
   Final CTA (section 9)
   ============================================================ */
.final { text-align: center; padding-block: clamp(var(--space-24), 14vw, 12rem); background: var(--grad-hero); position: relative; }
.final h2 { font-size: var(--text-3xl); max-width: 16ch; margin: 0 auto var(--space-6); }
.final .principles-recap { display: flex; gap: var(--space-6); justify-content: center; flex-wrap: wrap; margin: var(--space-10) 0; }
.recap-pill { font-family: var(--font-mono); font-size: var(--text-sm); padding: var(--space-3) var(--space-6); border: 1px solid color-mix(in srgb, var(--color-primary) 45%, var(--glass-border)); border-radius: var(--radius-full); color: var(--color-primary); background: var(--glass-bg-strong); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); box-shadow: var(--shadow-glass); }
.final .tagline { font-size: var(--text-xl); font-family: var(--font-display); color: var(--color-text); max-width: 20ch; margin: 0 auto var(--space-10); }

.score-ring circle:first-of-type { stroke: var(--color-surface-3); }
footer { border-top: 1px solid var(--color-border); padding: var(--space-8) 0; background: var(--glass-bg); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-4); }
footer .muted { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .depts, .lic-grid { grid-template-columns: repeat(2, 1fr); }
  .mech-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .concept-grid { grid-template-columns: 1fr; }
  .concept-arrow { transform: rotate(90deg); min-height: 48px; }
  .principles, .money-cols, .consil-score, .math-grid { grid-template-columns: 1fr; }
  .sys-core { grid-template-columns: 1fr; }
  .depts, .lic-grid, .mech-grid { grid-template-columns: 1fr; }
  .reliability-stat { grid-template-columns: 1fr; gap: var(--space-6); text-align: center; }
  .dept-agents, .dept .dept-agents { max-height: none; opacity: 1; } /* mobile: always expanded */
  .hero h1 { font-size: clamp(3.4rem, 18vw, 5rem); }
  .hero-inner .wrap::before { inset: -8% -10% -8% -10%; background: radial-gradient(ellipse 90% 100% at 35% 48%, var(--color-bg) 45%, transparent 88%); }
  .dept-hint { display: none; }
  .score-ring { margin: 0 auto; }
}