/* =====================================================================
   YUTO — Design System V8
   Space Grotesk + DM Sans + JetBrains Mono · Navy/Cyan · Dark
   ===================================================================== */

/* ── 0. Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── 1. Design Tokens ── */
:root {
  /* Surfaces */
  --bg:        #060A14;
  --surface:   #0A1020;
  --surface-2: #0E1428;
  --border:    rgba(255,255,255,.07);
  --border-hi: rgba(0,207,255,.35);

  /* Brand palette */
  --c1: #00CFFF;   /* cyan   */
  --c2: #818CF8;   /* indigo */
  --c3: #A78BFA;   /* violet */
  --grn: #34D399;
  --amb: #FBBF24;
  --red: #F87171;

  /* Legacy aliases — backward compat for sub-pages */
  --primary:       var(--c1);
  --primary-hover: #00b8e0;
  --primary-dim:   rgba(0,207,255,.08);
  --accent:        var(--c2);
  --accent-dim:    rgba(129,140,248,.12);

  /* Text */
  --ink:   #E8EBF5;
  --ink-2: #8FA3B8;
  --ink-3: rgba(232,235,245,.38);

  /* Typography */
  --ff-display: 'Space Grotesk', system-ui, sans-serif;
  --ff-body:    'DM Sans', system-ui, sans-serif;
  --ff-mono:    'JetBrains Mono', monospace;

  /* Type scale */
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  2rem;
  --fs-3xl:  2.75rem;
  --fs-4xl:  3.75rem;
  --fs-5xl:  5rem;
  --fs-hero: clamp(2.75rem, 6vw, 5.5rem);

  /* Spacing (8px grid) */
  --sp-1: 0.5rem;   --sp-2: 1rem;    --sp-3: 1.5rem;
  --sp-4: 2rem;     --sp-6: 3rem;    --sp-8: 4rem;
  --sp-12: 6rem;    --sp-16: 8rem;   --sp-24: 12rem;

  /* Shape */
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --shadow:    0 2px 16px rgba(0,0,0,.5);
  --section-max: 1200px;
  --text-max:    680px;
}

/* ── 2. Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-wrap: balance;
  color: var(--ink);
}

p { text-wrap: pretty; max-width: var(--text-max); }

/* ── 3. Layout utilities ── */
.container {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}
@media (max-width: 768px) { .container { padding: 0 var(--sp-3); } }

.section { padding: var(--sp-24) 0; }
@media (max-width: 768px) { .section { padding: var(--sp-12) 0; } }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ── 4. Typography ── */
.display-xl {
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  text-wrap: balance;
}
.display-xl em {
  font-style: normal;
  background: linear-gradient(120deg, var(--c1), var(--c2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-4xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.label-text {
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c1);
}

.body-lg {
  font-size: var(--fs-md);
  line-height: 1.75;
  color: var(--ink-2);
  max-width: 60ch;
}

.body-md {
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--ink-2);
}

/* Gradient text — used in sub-page h1 spans */
.gradient-text {
  background: linear-gradient(120deg, var(--c1) 0%, var(--c2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 5. Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: all 0.18s ease-out;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--c1);
  color: #000;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,207,255,.35);
}

.btn-ghost {
  background: rgba(255,255,255,.04);
  color: var(--ink-2);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: rgba(0,207,255,.35);
  color: var(--c1);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: var(--fs-base);
}

/* ── 6. Top Banner ── */
.top-banner {
  background: rgba(0,207,255,.05);
  border-bottom: 1px solid rgba(0,207,255,.12);
  text-align: center;
  padding: var(--sp-1) var(--sp-4);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: rgba(232,235,245,.7);
  position: sticky;
  top: 0;
  z-index: 90;
}
.top-banner a {
  color: var(--c1);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.top-banner strong { color: var(--ink); }

/* ── 7. Navbar ── */
.navbar {
  position: sticky;
  top: 36px;
  z-index: 100;
  padding: 0 var(--sp-4);
  background: transparent;
  transition: background 0.3s, border-color 0.3s, top 0.3s;
}
.navbar.scrolled {
  background: rgba(6,10,20,.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  top: 0;
}

.navbar-inner {
  max-width: var(--section-max);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo-kanji {
  font-size: var(--fs-lg);
  background: linear-gradient(135deg, var(--c1), var(--c2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin-left: auto;
}
@media (max-width: 900px) { .nav-links { display: none; } }

.nav-item { position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: rgba(232,235,245,.68);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}
.nav-link:hover { color: var(--ink); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 280px;
  background: rgba(10,16,32,.95);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-1);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.18s, transform 0.18s;
  z-index: 200;
  box-shadow: 0 8px 32px rgba(0,0,0,.6);
}
.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 14px;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  border-radius: var(--radius-sm);
  transition: background 0.12s, color 0.12s;
}
.nav-dropdown a:hover { background: rgba(0,207,255,.07); color: var(--c1); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.125rem;
  background: var(--c1);
  color: #000;
  border-radius: var(--radius-sm);
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
  flex-shrink: 0;
}
.nav-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,207,255,.3);
}

.lang-toggle {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px;
  gap: 2px;
  flex-shrink: 0;
}
.lang-btn {
  background: transparent;
  border: none;
  color: var(--ink-3);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--ff-display);
}
.lang-btn.active, .lang-btn:hover {
  background: var(--c1);
  color: #000;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  margin-left: var(--sp-1);
  border-radius: var(--radius-sm);
}
@media (max-width: 900px) { .nav-toggle { display: flex; } }
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink-2);
  border-radius: 2px;
  transition: all 0.2s;
  display: block;
}

.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  padding: var(--sp-6) var(--sp-4);
  flex-direction: column;
  gap: var(--sp-2);
  transform: translateX(100%);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1), opacity 0.3s;
}
.nav-mobile.open { transform: translateX(0); opacity: 1; }
@media (max-width: 900px) { .nav-mobile { display: flex; } }
.nav-mobile a {
  font-size: var(--fs-xl);
  font-family: var(--ff-display);
  font-weight: 700;
  color: var(--ink);
  padding: var(--sp-1) 0;
  border-bottom: 1px solid var(--border);
}
.nav-mobile-close {
  align-self: flex-end;
  font-size: var(--fs-sm);
  color: var(--ink-3);
  margin-bottom: var(--sp-3);
}

/* ── 8. Homepage Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-24) 0 var(--sp-16);
  overflow: hidden;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 80%);
  z-index: 0;
}

.hero-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,207,255,.07) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  pointer-events: none;
  z-index: 0;
  animation: glow-drift 12s ease-in-out infinite;
}
@keyframes glow-drift {
  0%, 100% { transform: translate(0, 0); }
  50%       { transform: translate(-40px, 40px); }
}

.hero-kicker {
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c1);
  margin-bottom: var(--sp-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(0,207,255,.25);
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0,207,255,.07);
}
.hero-kicker::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c1);
  animation: dot-pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes dot-pulse { 0%,100%{opacity:1}50%{opacity:.2} }

.hero-heading {
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-wrap: balance;
  margin-bottom: var(--sp-4);
  color: var(--ink);
}
.hero-heading em {
  font-style: normal;
  background: linear-gradient(120deg, var(--c1), var(--c2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-typed-wrap {
  font-size: var(--fs-md);
  color: var(--ink-2);
  margin-bottom: var(--sp-3);
  min-height: 1.8em;
  display: flex;
  align-items: center;
  gap: 0.3em;
}
.typed-text { color: var(--c1); font-weight: 600; font-family: var(--ff-display); }
.typed-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--c1);
  animation: cursor-blink 0.8s step-end infinite;
  vertical-align: middle;
  border-radius: 1px;
  margin-left: 1px;
}
@keyframes cursor-blink { 50% { opacity: 0; } }

.hero-sub {
  font-size: var(--fs-md);
  line-height: 1.75;
  color: var(--ink-2);
  max-width: 55ch;
  margin-bottom: var(--sp-6);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.hero-trust {
  margin-top: var(--sp-8);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0.03em;
}

/* ── 9. Sub-page hero ── */
.page-hero {
  min-height: 55vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero > div { position: relative; z-index: 2; }
.page-hero > .orb { position: absolute; z-index: 0; }
.page-hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  line-height: 1.06;
  margin-bottom: 16px;
}
.page-hero .subtitle {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 32px;
  margin-left: auto;
  margin-right: auto;
  max-width: var(--text-max);
}

/* Hero eyebrow — used in sub-pages */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c1);
  border: 1px solid rgba(0,207,255,.25);
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0,207,255,.07);
  margin-bottom: 24px;
}
.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c1);
  flex-shrink: 0;
  animation: dot-pulse 2s ease-in-out infinite;
}

/* Decorative orbs — used in sub-pages */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.orb-cyan {
  background: radial-gradient(circle, rgba(0,207,255,.32) 0%, rgba(0,207,255,.08) 40%, transparent 70%);
}
.orb-indigo {
  background: radial-gradient(circle, rgba(129,140,248,.28) 0%, rgba(129,140,248,.07) 40%, transparent 70%);
}

/* Glow line separator */
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c1), transparent);
  opacity: .18;
  margin: 0;
}

/* ── 10. Section header ── */
.section-head { margin-bottom: 48px; }
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c1);
  margin-bottom: 12px;
}

/* ── 11. Glassmorphism card ── */
.card {
  background: rgba(255,255,255,.048);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: background .3s, border-color .3s, box-shadow .3s, transform .3s;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 10%; width: 80%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.58), transparent);
  pointer-events: none;
  z-index: 1;
}
.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 45%;
  background: linear-gradient(to bottom, rgba(255,255,255,.055) 0%, transparent 100%);
  pointer-events: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  z-index: 1;
}
.card:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(0,207,255,.25);
  box-shadow: 0 8px 40px rgba(0,207,255,.07);
  transform: translateY(-2px);
}
.card h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 2;
}
.card p {
  font-size: var(--fs-sm);
  color: var(--ink-2);
  line-height: 1.7;
  position: relative;
  z-index: 2;
  max-width: none;
}

/* Card icon — colored square with emoji/icon */
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}
.icon-cyan    { background: rgba(0,207,255,.12);  border: 1px solid rgba(0,207,255,.25); }
.icon-indigo  { background: rgba(129,140,248,.12);border: 1px solid rgba(129,140,248,.25); }
.icon-coral   { background: rgba(248,113,113,.12);border: 1px solid rgba(248,113,113,.25); }
.icon-emerald { background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.25); }

/* ── 12. Steps — used in sub-pages ── */
.step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 2;
}
.step:last-child { border-bottom: none; }
.step h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -.01em;
}
.step p {
  font-size: var(--fs-sm);
  color: var(--ink-2);
  max-width: none;
}
.step-n {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--c1);
  background: rgba(0,207,255,.08);
  border: 1px solid rgba(0,207,255,.22);
  border-radius: 6px;
  padding: 4px 8px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
  letter-spacing: .06em;
}

/* ── 13. CTA block — used in sub-pages ── */
.cta-block {
  background: rgba(255,255,255,.04);
  backdrop-filter: blur(24px) saturate(130%);
  -webkit-backdrop-filter: blur(24px) saturate(130%);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 20px;
  padding: 64px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: 0; left: 15%; width: 70%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  pointer-events: none;
}
.cta-block::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 40%;
  background: linear-gradient(to bottom, rgba(255,255,255,.05) 0%, transparent 100%);
  border-radius: 20px 20px 0 0;
  pointer-events: none;
}
.cta-block h2 {
  position: relative;
  z-index: 2;
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}
.cta-block p {
  position: relative;
  z-index: 2;
  color: var(--ink-2);
  margin: 0 auto 32px;
  max-width: 52ch;
}
.cta-block .btn { position: relative; z-index: 2; }

/* ── 14. Tags ── */
.tag, .badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--ff-display);
}
.tag-cyan, .badge-primary {
  background: rgba(0,207,255,.08);
  color: var(--c1);
  border: 1px solid rgba(0,207,255,.22);
}

/* ── 15. Homepage — Positioning section ── */
.section-positioning {
  padding: var(--sp-24) 0;
  border-top: 1px solid var(--border);
}
.positioning-inner {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}
@media (max-width: 900px) { .positioning-inner { grid-template-columns: 1fr; } }
.positioning-left .section-title { margin-bottom: var(--sp-4); }
.positioning-left .body-lg { margin-bottom: var(--sp-6); }

.quadrant {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.quad-cell { background: var(--bg); padding: var(--sp-4); transition: background .2s; }
.quad-cell.active {
  background: rgba(0,207,255,.06);
  border: 2px solid rgba(0,207,255,.35);
  margin: -1px;
  z-index: 1;
  border-radius: var(--radius-sm);
}
.quad-cell-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--sp-1);
}
.quad-cell.active .quad-cell-label { color: var(--c1); }
.quad-cell-name {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--ink);
}
.quad-cell-names { font-size: var(--fs-xs); color: var(--ink-3); }

/* ── 16. Homepage — Stack section ── */
.section-stack {
  padding: var(--sp-24) 0;
  border-top: 1px solid var(--border);
}
.stack-inner {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}
.stack-header { margin-bottom: var(--sp-12); max-width: 600px; }
.stack-visual {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stack-band {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: var(--sp-6);
  align-items: center;
  padding: var(--sp-6);
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.025);
  transition: background 0.2s, transform 0.2s;
  text-decoration: none;
  backdrop-filter: blur(12px);
}
.stack-band:last-child { border-bottom: none; }
.stack-band:hover { background: rgba(255,255,255,.045); transform: translateX(4px); }
.stack-band-name {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stack-band-role {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.stack-band-desc { font-size: var(--fs-sm); color: var(--ink-2); }
.stack-band-arrow {
  font-size: var(--fs-lg);
  color: var(--ink-3);
  transition: transform 0.2s, color 0.2s;
}
.stack-band:hover .stack-band-arrow { transform: translateX(4px); color: var(--c1); }
.stack-band[data-layer="claw"]    { border-left: 3px solid var(--c1); }
.stack-band[data-layer="manager"] { border-left: 3px solid var(--c2); }
.stack-band[data-layer="prime"]   { border-left: 3px solid var(--amb); }

/* ── 17. Homepage — CTA section ── */
.section-cta {
  padding: var(--sp-24) 0;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,.015);
}
.cta-inner {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-8);
  align-items: center;
}
@media (max-width: 768px) { .cta-inner { grid-template-columns: 1fr; } }
.cta-text h2 {
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-3xl));
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-2);
}
.cta-text p { font-size: var(--fs-md); color: var(--ink-2); max-width: 52ch; }
.cta-actions {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  align-items: flex-start;
  flex-shrink: 0;
}
@media (max-width: 768px) { .cta-actions { flex-direction: row; flex-wrap: wrap; } }

/* ── 18. Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--sp-12) 0 var(--sp-6);
}
.footer-grid {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-8);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand p {
  font-size: var(--fs-sm);
  color: var(--ink-3);
  max-width: 28ch;
  margin-top: var(--sp-2);
}
.footer-col h4 {
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--sp-3);
}
.footer-col a {
  display: block;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  padding: 4px 0;
  transition: color 0.15s, transform 0.15s;
}
.footer-col a:hover { color: var(--c1); transform: translateX(4px); }
.footer-bottom {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-4) 0;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
  font-size: var(--fs-xs);
  color: var(--ink-3);
}

/* ── 19. Aurora background — injected via JS ── */
.aurora-wrap {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.au { position: absolute; border-radius: 50%; }
.au1 {
  width: 80vw; height: 80vw; top: -30%; left: -20%;
  background: radial-gradient(circle, rgba(0,207,255,.30) 0%, rgba(0,207,255,.07) 40%, transparent 70%);
  filter: blur(72px);
  animation: au1m 20s ease-in-out infinite;
}
.au2 {
  width: 65vw; height: 65vw; bottom: -25%; right: -15%;
  background: radial-gradient(circle, rgba(129,140,248,.26) 0%, rgba(129,140,248,.06) 40%, transparent 70%);
  filter: blur(82px);
  animation: au2m 26s ease-in-out infinite 5s;
}
.au3 {
  width: 50vw; height: 50vw; top: 30%; right: 10%;
  background: radial-gradient(circle, rgba(167,139,250,.18) 0%, rgba(167,139,250,.04) 40%, transparent 70%);
  filter: blur(62px);
  animation: au3m 16s ease-in-out infinite 10s;
}
@keyframes au1m {
  0%,100%{transform:translate(0,0) scale(1)}
  35%{transform:translate(10%,15%) scale(1.08)}
  70%{transform:translate(-5%,7%) scale(.96)}
}
@keyframes au2m {
  0%,100%{transform:translate(0,0) scale(1)}
  45%{transform:translate(-12%,-10%) scale(1.10)}
  75%{transform:translate(5%,4%) scale(.93)}
}
@keyframes au3m {
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(8%,-14%) scale(1.15)}
}

/* ── 20. Reveal animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(.16,1,.3,1), transform 0.7s cubic-bezier(.16,1,.3,1);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(.16,1,.3,1), transform 0.7s cubic-bezier(.16,1,.3,1);
}
.reveal-left.is-visible { opacity: 1; transform: translateX(0); }

.d1 { transition-delay: 0s; }
.d2 { transition-delay: 0.12s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.36s; }
.d5 { transition-delay: 0.48s; }
.d6 { transition-delay: 0.60s; }

/* ── 21. Split words ── */
.split-word  { display: inline-block; overflow: hidden; vertical-align: bottom; }
.split-inner { display: inline-block; will-change: transform; }

/* ── 22. Scroll progress bar ── */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--c1), var(--c2));
  z-index: 10000;
  box-shadow: 0 0 8px var(--c1);
  transition: width 0.05s linear;
}

/* ── 23. Utilities ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ── 24. Sub-page animations ── */
.page-hero .hero-eyebrow{animation:phUp .6s .08s cubic-bezier(.16,1,.3,1) both}
.page-hero h1{animation:phUp .7s .2s cubic-bezier(.16,1,.3,1) both}
.page-hero .subtitle{animation:phUp .7s .34s cubic-bezier(.16,1,.3,1) both}
.page-hero .btn,.page-hero .ph-ctas{animation:phUp .6s .48s cubic-bezier(.16,1,.3,1) both}
@keyframes phUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}

/* ── 25. Legacy variable aliases ── */
:root{
  --cyan:var(--c1);--indigo:var(--c2);--coral:var(--red);
  --text-muted:var(--ink-3,var(--ink-2));--border-glow:rgba(0,207,255,.35);
}

/* ── 26. Stack layers ── */
.stack-layers{display:flex;flex-direction:column;gap:2px;max-width:700px;margin:0 auto}
.stack-layer{
  display:flex;align-items:center;justify-content:space-between;
  padding:24px 28px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.03);gap:16px;
  opacity:0;transform:translateX(-32px);
  transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1),border-color .3s,background .3s;
}
.stack-layer.is-visible{opacity:1;transform:none}
.stack-layer:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.15)}
.stack-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}

/* ── 27. Section head reveal ── */
.section-head.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.section-head.reveal.is-visible{opacity:1;transform:none}

/* ── 28. Card hover lift ── */
.card{transition:background .25s,border-color .25s,box-shadow .25s,transform .25s}
.card:hover{transform:translateY(-4px) !important;box-shadow:0 12px 40px rgba(0,0,0,.3),0 0 0 1px rgba(0,207,255,.15)}

/* ── 29. Glow line pulse ── */
.glow-line{animation:glowPulse 4s ease-in-out infinite}
@keyframes glowPulse{0%,100%{opacity:.18}50%{opacity:.35}}

/* ── 30. Step hover ── */
.step:hover{background:rgba(255,255,255,.03)}