/* ═══════════════════════════════════════════════════════════
   SoLS AI — Landing Page Stylesheet
   Design System: Warm Editorial / "Claude" aesthetic
   Light cream canvas · clay accent · serif display
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400;1,9..144,500&family=Inter:wght@400;450;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Neutral near-black canvas */
  --bg: #09090B;
  --bg-2: #0E0E11;
  --bg-card: #151518;
  --bg-dark: #060608;
  --bg-dark-2: #131316;

  /* Ink (neutral light text on dark) */
  --ink: #F4F3F6;
  --ink-soft: #A7A6AE;
  --ink-faint: #6E6D76;
  --ink-on-dark: #F4F3F6;
  --ink-on-dark-soft: #A7A6AE;

  /* AI accent — indigo → violet → cyan (mapped onto former clay vars) */
  --clay: #8B7CF6;        /* primary violet-indigo */
  --clay-dark: #A99CFF;   /* lighter for text/links on dark */
  --clay-soft: #C9C0FF;
  --clay-tint: rgba(124, 108, 240, 0.16);

  /* Support accent */
  --teal: #22D3EE;        /* cyan partner */

  /* Signature gradient (used on UI: buttons, progress, avatars — NOT text) */
  --grad: linear-gradient(120deg, #6366F1 0%, #8B5CF6 48%, #22D3EE 100%);
  --grad-soft: linear-gradient(120deg, #818CF8 0%, #A78BFA 50%, #67E8F9 100%);

  /* Lines */
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --line-dark: rgba(255, 255, 255, 0.09);

  /* Type */
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;

  /* Layout */
  --container: 1180px;
  --container-wide: 1280px;
  --section-pad: clamp(4.5rem, 9vw, 8rem);

  /* Radius */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-full: 999px;

  /* Shadow (deep on dark) */
  --sh-sm: 0 1px 2px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
  --sh-md: 0 6px 18px rgba(0,0,0,0.45), 0 16px 40px rgba(0,0,0,0.35);
  --sh-lg: 0 12px 30px rgba(0,0,0,0.5), 0 28px 64px rgba(0,0,0,0.45);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html { background: var(--bg); }

body {
  font-family: var(--sans);
  background: transparent;
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 3D WebGL background canvas */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px; width: 0;
  background: linear-gradient(90deg, var(--clay), var(--teal));
  box-shadow: 0 0 12px rgba(124,108,240,0.55);
  z-index: 2000;
  transition: width 0.08s linear;
}

::selection { background: var(--clay-soft); color: var(--ink); }

a { color: var(--clay-dark); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--clay); }

img { max-width: 100%; height: auto; display: block; }

em { font-style: italic; }

/* ── Container ────────────────────────────────────────────── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.75rem; }
.container--wide { max-width: var(--container-wide); }

/* ── Navigation ───────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.1rem 0;
  transition: all 0.3s var(--ease);
  background: rgba(247, 244, 238, 0);
}
.navbar.scrolled {
  padding: 0.6rem 0;
  background: rgba(9, 9, 11, 0.92);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }

.navbar-logo { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.navbar-logo img { height: 32px; width: auto; }
.navbar-logo span {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.navbar-links { display: flex; align-items: center; gap: 1.9rem; list-style: none; }
.navbar-links a {
  color: var(--ink-soft);
  font-size: 0.93rem;
  font-weight: 500;
  position: relative;
  transition: color 0.2s var(--ease);
}
.navbar-links a:hover { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: 1.1rem; flex-shrink: 0; }
.nav-link-ghost { color: var(--ink-soft); font-size: 0.93rem; font-weight: 500; }
.nav-link-ghost:hover { color: var(--ink); }

.btn-nav {
  padding: 0.58rem 1.25rem;
  background: var(--ink);
  color: var(--bg) !important;
  border: none;
  border-radius: var(--r-full);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn-nav:hover { background: var(--clay); transform: translateY(-1px); color: #fff !important; }

.navbar-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.navbar-burger span { display: block; width: 24px; height: 2px; background: var(--ink); border-radius: 1px; transition: all 0.3s var(--ease); }

/* ── Section base ─────────────────────────────────────────── */
.section { padding: var(--section-pad) 0; position: relative; }
.section--alt { background: var(--bg-2); }
.section--dark { background: var(--bg-dark); }

.section-head { max-width: 720px; margin-bottom: 3rem; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--clay-dark);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 1.25rem;
}
.section-label .dot { width: 6px; height: 6px; background: var(--clay); border-radius: 50%; }
.section-label--light { color: var(--clay-soft); }
.section-label--light .dot { background: var(--clay-soft); }

.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.section-title em { font-style: italic; color: var(--clay-dark); }
.section-title--light { color: var(--ink-on-dark); }
.section-title--light em { color: var(--clay-soft); }

.section-subtitle {
  font-size: 1.12rem;
  color: var(--ink-soft);
  margin-top: 1.1rem;
  line-height: 1.6;
}
.section-subtitle--light { color: var(--ink-on-dark-soft); }

/* ═══ HERO ═══════════════════════════════════════════════════ */
.hero {
  padding-top: 9.5rem;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

/* Centered, minimal hero (single statement) */
.hero--center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 6rem;
  padding-bottom: 6rem;
}
.hero--center::after {
  content: '';
  position: absolute;
  inset: 0;
  /* soft dark vignette so the headline stays legible over the shader */
  background: radial-gradient(ellipse 60% 50% at 50% 46%,
    rgba(9,9,11,0.78) 0%, rgba(9,9,11,0.45) 34%, rgba(9,9,11,0.0) 66%);
  pointer-events: none;
  z-index: 0;
}
.hero--center .hero-content {
  position: relative;
  z-index: 1;
  max-width: 940px;
  margin: 0 auto;
}
.hero--center .hero-eyebrow { text-align: center; }
.hero--center .hero-title {
  font-size: clamp(2.8rem, 7vw, 5.4rem);
  line-height: 1.04;
  margin-bottom: 2.5rem;
}
.hero--center .hero-actions { justify-content: center; }

.hero-scroll-hint {
  position: absolute;
  left: 50%; bottom: 2rem;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  z-index: 1;
}
.hero-scroll-hint:hover { color: var(--ink); }
.hero-scroll-hint svg { animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 60vw; height: 60vw;
  max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, rgba(124,108,240,0.16) 0%, transparent 65%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.42rem 0.95rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  margin-bottom: 1.75rem;
  box-shadow: var(--sh-sm);
}
.hero-badge .badge-dot { width: 7px; height: 7px; background: #1FA463; border-radius: 50%; box-shadow: 0 0 0 3px rgba(31,164,99,0.18); }
.hero-badge span { font-family: var(--mono); font-size: 0.74rem; color: var(--ink-soft); letter-spacing: 0.01em; }

.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 5.4vw, 4.3rem);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.5rem;
}
.hero-title em { font-style: italic; color: var(--clay-dark); display: block; }

/* Apple-style fading single-line rotator */
.hero-rotator { display: block; min-height: 1.05em; }
.hero-rotator em {
  display: inline-block;
  font-style: italic;
  color: var(--clay-dark);
  will-change: opacity, transform;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.hero-rotator.is-out em { opacity: 0; transform: translateY(0.4em); }
.hero-eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 1.1rem;
  min-height: 1.1em;
}
.hero-eyebrow .type-caret {
  display: inline-block;
  width: 2px; height: 1em;
  background: var(--clay);
  margin-left: 2px;
  vertical-align: -0.12em;
  animation: caret-blink 1s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

.hero-description {
  font-size: 1.18rem;
  color: var(--ink-soft);
  line-height: 1.62;
  margin-bottom: 2.25rem;
  max-width: 540px;
}
.hero-description strong { color: var(--ink); font-weight: 600; }

.hero-actions { display: flex; gap: 0.9rem; align-items: center; flex-wrap: wrap; }

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  background: var(--ink);
  color: var(--bg);
  border: none;
  border-radius: var(--r-full);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  box-shadow: var(--sh-sm);
}
.btn-primary:hover { background: var(--clay); color: #fff; transform: translateY(-2px); box-shadow: var(--sh-md); }
.btn-primary svg { transition: transform 0.25s var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.82rem 1.55rem;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-full);
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.btn-secondary:hover { border-color: var(--ink); background: var(--ink); color: var(--bg); transform: translateY(-2px); }

.hero-stats {
  display: flex;
  gap: 2.75rem;
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
.hero-stat .number {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}
.hero-stat .label { font-size: 0.82rem; color: var(--ink-faint); margin-top: 0.35rem; }

/* Hero visual */
.hero-visual { position: relative; }
.hero-media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
  aspect-ratio: 4 / 4.4;
  background: linear-gradient(145deg, var(--clay-tint), var(--bg-2));
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media.img-fallback::after {
  content: 'AI';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 4rem; color: var(--clay);
  background: linear-gradient(145deg, var(--clay-tint), var(--bg-2));
}

.hero-float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.05rem;
  background: rgba(32, 30, 36, 0.95);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  box-shadow: var(--sh-md);
  max-width: 250px;
}
.hero-float-card--top { top: 1.5rem; left: -1.75rem; animation: floaty 5s ease-in-out infinite; }
.hero-float-card--bottom { bottom: 1.75rem; right: -1.5rem; animation: floaty 5s ease-in-out infinite 1.2s; }
.hfc-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--clay-tint); border-radius: 10px; font-size: 1.1rem;
}
.hfc-icon--green { background: rgba(31,164,99,0.12); }
.hfc-value { font-size: 0.85rem; font-weight: 700; color: var(--ink); line-height: 1.2; }
.hfc-label { font-size: 0.72rem; color: var(--ink-faint); margin-top: 0.15rem; }

@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ═══ LOGOS / ECOSYSTEM ══════════════════════════════════════ */
.logos-section { padding: 2.75rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.logos-caption { text-align: center; font-size: 0.82rem; color: var(--ink-faint); margin-bottom: 1.5rem; letter-spacing: 0.02em; }
.logos-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem 1rem; }
.logo-pill {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.35rem 1rem;
  border-radius: var(--r-full);
  transition: all 0.25s var(--ease);
}
.logo-pill:hover { color: var(--ink); background: var(--bg-card); box-shadow: var(--sh-sm); }

/* ═══ ABOUT ══════════════════════════════════════════════════ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4.5rem; align-items: center; }
.about-text p { color: var(--ink-soft); margin-bottom: 1.25rem; font-size: 1.05rem; line-height: 1.7; }
.about-text strong { color: var(--ink); font-weight: 600; }

.about-list { list-style: none; margin-top: 1.75rem; display: flex; flex-direction: column; gap: 0.85rem; }
.about-list li { display: flex; align-items: center; gap: 0.75rem; font-size: 1.02rem; color: var(--ink); }
.about-list .check {
  width: 24px; height: 24px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--clay-tint); color: var(--clay-dark);
  border-radius: 50%; font-size: 0.8rem; font-weight: 700;
}

.about-visual { position: relative; }
.about-visual img {
  width: 100%;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  box-shadow: var(--sh-lg);
  background: var(--bg-card);
}
.about-visual-badge {
  position: absolute;
  bottom: -1.25rem; left: -1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 0.9rem 1.25rem;
  box-shadow: var(--sh-md);
}
.about-visual-badge strong { display: block; font-family: var(--serif); font-size: 1.1rem; color: var(--clay-dark); }
.about-visual-badge span { font-size: 0.78rem; color: var(--ink-faint); }

/* ═══ FEATURE CARDS (3D tilt) ════════════════════════════════ */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; perspective: 1400px; }
.feature-card {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--bg-card);
  border: 1px solid var(--line);
  transform: perspective(1200px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transform-style: preserve-3d;
  transition: transform 0.3s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  overflow: hidden;
}
.feature-card:hover { will-change: transform; }
.feature-card:hover { box-shadow: var(--sh-lg); border-color: var(--clay-soft); }
.feature-card-inner { position: relative; z-index: 2; padding: 2.1rem; transform-style: preserve-3d; }
.feature-glow {
  position: absolute; inset: 0; z-index: 1; opacity: 0; pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(440px circle at var(--mx, 50%) var(--my, 50%), rgba(124,108,240,0.20), transparent 62%);
  transition: opacity 0.35s var(--ease);
}
.feature-card:hover .feature-glow { opacity: 1; }
.feature-num {
  position: absolute; top: 1.6rem; right: 1.7rem;
  font-family: var(--serif); font-style: italic; font-size: 1.05rem; font-weight: 500;
  color: var(--clay); opacity: 0.5;
  transition: transform 0.35s var(--ease);
}
.feature-icon {
  width: 54px; height: 54px;
  display: flex; align-items: center; justify-content: center;
  background: var(--clay-tint);
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 20px rgba(124,108,240,0.20);
  transition: transform 0.35s var(--ease);
}
.feature-card h3 {
  font-family: var(--serif); font-size: 1.24rem; font-weight: 600;
  margin-bottom: 0.55rem; color: var(--ink); letter-spacing: -0.01em;
  transition: transform 0.35s var(--ease);
}
.feature-card:hover .feature-icon { transform: translateZ(45px); }
.feature-card:hover h3 { transform: translateZ(28px); }
.feature-card:hover .feature-num { transform: translateZ(20px); opacity: 0.85; }
.feature-card p { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.6; }
.feature-card code { font-family: var(--mono); font-size: 0.82em; background: var(--bg-2); padding: 0.1em 0.35em; border-radius: 5px; color: var(--clay-dark); }
.feature-card strong { color: var(--ink); }

/* ═══ GENERIC 3D TILT (showcase / usecase / testimonial / hero) ═══ */
[data-tilt] {
  transform: perspective(1100px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transform-style: preserve-3d;
  transition: transform 0.3s var(--ease), box-shadow 0.35s var(--ease);
}
[data-tilt]:hover { will-change: transform; }

/* ═══ SHOWCASE / AI IN ACTION ════════════════════════════════ */
.showcase-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.25rem;
}
.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.3s var(--ease);
}
.showcase-card:hover { box-shadow: var(--sh-lg); }
.showcase-card--lg { grid-row: span 2; display: flex; flex-direction: column; }
.showcase-card--lg .showcase-img { flex: 1; min-height: 320px; }

.showcase-img { position: relative; aspect-ratio: 16/10; overflow: hidden; background: var(--clay-tint); }
.showcase-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.showcase-card:hover .showcase-img img { transform: scale(1.04); }
.showcase-img.img-fallback { background: linear-gradient(145deg, var(--clay-tint), var(--bg-2)); }

.showcase-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.75rem;
  background: linear-gradient(180deg, transparent, rgba(26,25,21,0.82));
  color: #fff;
}
.showcase-overlay h3 { font-family: var(--serif); font-size: 1.5rem; font-weight: 600; margin-bottom: 0.4rem; }
.showcase-overlay p { font-size: 0.95rem; color: rgba(255,255,255,0.85); line-height: 1.5; }

.showcase-body { padding: 1.5rem; }
.showcase-body h3 { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--ink); }
.showcase-body p { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.55; }

/* ═══ ARCHITECTURE (dark) ════════════════════════════════════ */
.architecture-visual {
  background: var(--bg-dark-2);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-xl);
  padding: 2rem;
  overflow: hidden;
}
.architecture-visual img { width: 100%; border-radius: var(--r-md); }
.architecture-caption {
  text-align: center;
  font-size: 0.88rem;
  color: var(--ink-on-dark-soft);
  margin-top: 1.5rem;
  max-width: 760px;
  margin-left: auto; margin-right: auto;
  line-height: 1.6;
}

/* ═══ METRICS / BENCHMARKS ═══════════════════════════════════ */
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; margin-bottom: 2.5rem; }
.metric-card {
  text-align: left;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease);
}
.metric-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.metric-value { font-family: var(--serif); font-size: 2.6rem; font-weight: 500; color: var(--clay-dark); line-height: 1; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.metric-label { font-size: 0.95rem; color: var(--ink); font-weight: 600; }
.metric-sublabel { font-size: 0.8rem; color: var(--ink-faint); margin-top: 0.2rem; }

.bench-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3rem;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
}
.bench-heading { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; margin-bottom: 1.5rem; color: var(--ink); }
.bench-heading span { color: var(--ink-faint); font-weight: 400; font-size: 0.85rem; }

.bench-table { width: 100%; border-collapse: collapse; }
.bench-table th { text-align: left; padding: 0.7rem 0; font-size: 0.78rem; color: var(--ink-faint); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; border-bottom: 1px solid var(--line); }
.bench-table td { padding: 0.72rem 0; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--line); }
.bench-table .ta-right { text-align: right; }
.bench-table .mono { font-family: var(--mono); color: var(--clay-dark); font-size: 0.92rem; }
.bench-table .bench-total td { border-bottom: none; font-family: var(--serif); font-weight: 600; padding-top: 1rem; }
.bench-table .bench-total .accent-text { font-size: 1.15rem; color: var(--clay-dark); }

.bench-stats { display: flex; flex-direction: column; gap: 0.9rem; }
.bench-stat { padding: 1rem 1.2rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-md); }
.bs-label { font-size: 0.78rem; color: var(--ink-faint); margin-bottom: 0.25rem; }
.bs-value { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; color: var(--ink); }

/* ═══ USE CASES ══════════════════════════════════════════════ */
.usecase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.3s var(--ease);
}
.usecase-card:hover { box-shadow: var(--sh-lg); }
.usecase-card > img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.usecase-card.img-fallback { min-height: 0; }
.usecase-card.img-fallback::before {
  content: ''; display: block; aspect-ratio: 16/10;
  background: linear-gradient(145deg, var(--clay-tint), var(--bg-2));
}
.usecase-body { padding: 1.6rem; }
.usecase-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clay-dark);
  background: var(--clay-tint);
  padding: 0.25rem 0.7rem;
  border-radius: var(--r-full);
  margin-bottom: 0.9rem;
}
.usecase-body h3 { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: var(--ink); margin-bottom: 0.5rem; }
.usecase-body p { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.6; }

/* ═══ TESTIMONIALS ═══════════════════════════════════════════ */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: all 0.3s var(--ease);
}
.testimonial-card:hover { box-shadow: var(--sh-lg); }
.testimonial-card blockquote {
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.5;
  color: var(--ink);
  font-weight: 400;
  position: relative;
}
.testimonial-card figcaption { display: flex; align-items: center; gap: 0.85rem; margin-top: auto; }
.t-avatar {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.9rem;
  font-family: var(--sans);
}
.t-name { font-weight: 600; color: var(--ink); font-size: 0.95rem; }
.t-role { font-size: 0.82rem; color: var(--ink-faint); }

/* ═══ RESEARCH PAPER ═════════════════════════════════════════ */
.paper-card {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-sm);
}
.paper-info h3 { font-family: var(--serif); font-size: 1.55rem; font-weight: 600; margin: 0.5rem 0 1.1rem; line-height: 1.25; color: var(--ink); letter-spacing: -0.01em; }
.paper-meta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.25rem; }
.paper-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.28rem 0.75rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.paper-authors { color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 0.75rem; }
.paper-authors strong { color: var(--ink); }
.paper-abstract { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.65; margin-bottom: 1.1rem; }
.paper-doi { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-faint); margin-bottom: 1.6rem; }
.paper-actions { display: flex; gap: 0.85rem; flex-wrap: wrap; }
.paper-visual { display: flex; align-items: center; justify-content: center; padding: 2rem; background: var(--bg-2); border-radius: var(--r-lg); }
.paper-visual img { max-width: 240px; }

/* ═══ TEAM ═══════════════════════════════════════════════════ */
.team-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.25rem; }
.team-card {
  text-align: center;
  padding: 2rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease);
}
.team-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.team-avatar {
  width: 68px; height: 68px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clay), var(--clay-soft));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  font-family: var(--serif); font-size: 1.4rem; font-weight: 600; color: #fff;
}
.team-card h4 { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; color: var(--ink); }
.team-role { font-size: 0.82rem; color: var(--clay-dark); font-weight: 600; }
.team-affiliation { font-size: 0.75rem; color: var(--ink-faint); margin-top: 0.1rem; }

/* ═══ ROADMAP ════════════════════════════════════════════════ */
.roadmap-timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 2rem; }
.roadmap-timeline::before {
  content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px;
  width: 2px; background: var(--line-strong);
}
.roadmap-item { position: relative; padding: 0 0 2.75rem 2.25rem; }
.roadmap-item:last-child { padding-bottom: 0; }
.roadmap-item::before {
  content: ''; position: absolute; left: -2rem; top: 4px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--line-strong);
}
.roadmap-item.completed::before { background: var(--clay); border-color: var(--clay); }
.roadmap-item.active::before { background: var(--clay); border-color: var(--clay-soft); box-shadow: 0 0 0 5px var(--clay-tint); }
.roadmap-phase { font-family: var(--mono); font-size: 0.72rem; color: var(--clay-dark); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.35rem; }
.roadmap-item h4 { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; margin-bottom: 0.45rem; color: var(--ink); }
.roadmap-item p { font-size: 0.96rem; color: var(--ink-soft); line-height: 1.6; }
.roadmap-status {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.25rem 0.75rem; border-radius: var(--r-full);
  font-size: 0.74rem; font-weight: 600; margin-top: 0.75rem;
}
.roadmap-status.completed { background: rgba(31,164,99,0.1); color: #1A8551; }
.roadmap-status.in-progress { background: var(--clay-tint); color: var(--clay-dark); }
.roadmap-status.upcoming { background: var(--bg-2); color: var(--ink-faint); border: 1px solid var(--line); }

/* ═══ FAQ ════════════════════════════════════════════════════ */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--line-strong);
  padding: 0.4rem 0;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.25rem 2.5rem 1.25rem 0;
  font-family: var(--serif);
  font-size: 1.22rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  transition: color 0.2s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem; color: var(--clay-dark);
  transition: transform 0.3s var(--ease);
  font-family: var(--sans); font-weight: 300;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item summary:hover { color: var(--clay-dark); }
.faq-item p { padding: 0 2.5rem 1.4rem 0; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.65; }

/* ═══ CTA ════════════════════════════════════════════════════ */
.cta-section { padding: var(--section-pad) 0; }
.cta-card {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  padding: 4rem 3rem;
  background: var(--bg-dark);
  border-radius: var(--r-xl);
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute; top: -40%; left: 50%; transform: translateX(-50%);
  width: 70%; height: 100%;
  background: radial-gradient(circle, rgba(124,108,240,0.32) 0%, transparent 60%);
  pointer-events: none;
}
.cta-card h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 500;
  color: var(--ink-on-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.1rem;
  position: relative;
}
.cta-card h2 em { color: var(--clay-soft); font-style: italic; }
.cta-card p { color: var(--ink-on-dark-soft); font-size: 1.1rem; max-width: 560px; margin: 0 auto 2.25rem; line-height: 1.6; position: relative; }
.cta-actions { display: flex; justify-content: center; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 1.75rem; position: relative; }
.btn-on-dark { background: var(--clay); color: #fff; }
.btn-on-dark:hover { background: var(--clay-dark); color: #fff; }
.btn-secondary-on-dark { color: var(--ink-on-dark); border-color: rgba(244,241,234,0.25); }
.btn-secondary-on-dark:hover { background: rgba(244,241,234,0.1); border-color: var(--ink-on-dark); color: var(--ink-on-dark); }
.cta-email {
  font-family: var(--mono); font-size: 0.9rem; color: var(--ink-on-dark-soft);
  display: flex; align-items: center; justify-content: center; gap: 0.5rem; position: relative;
}

/* ═══ FOOTER ═════════════════════════════════════════════════ */
.footer { background: var(--bg); border-top: 1px solid var(--line); padding: 3.5rem 0 2rem; }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 2.5rem; }
.footer-logo { display: flex; align-items: center; gap: 0.55rem; }
.footer-logo span { font-family: var(--serif); font-weight: 600; font-size: 1.2rem; color: var(--ink); }
.footer-brand p { color: var(--ink-soft); font-size: 0.92rem; margin-top: 1rem; max-width: 290px; line-height: 1.6; }
.footer-col h4 { font-size: 0.78rem; font-weight: 700; color: var(--ink); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul a { color: var(--ink-soft); font-size: 0.9rem; }
.footer-col ul a:hover { color: var(--clay-dark); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 2rem; border-top: 1px solid var(--line);
  font-size: 0.82rem; color: var(--ink-faint);
}

/* ═══ SCROLL REVEAL ══════════════════════════════════════════ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-float-card { animation: none; }
}

/* ═══ RESPONSIVE ═════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .navbar-links { gap: 1.25rem; }
  .navbar-links a { font-size: 0.86rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { max-width: 480px; }
  .hero-float-card--top { left: 0; }
  .hero-float-card--bottom { right: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: 1fr 1fr; }
  .showcase-card--lg { grid-row: auto; grid-column: span 2; }
  .showcase-card--lg .showcase-img { min-height: 260px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .bench-card { grid-template-columns: 1fr; gap: 2.5rem; }
  .usecase-grid { grid-template-columns: 1fr 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; max-width: 620px; margin: 0 auto; }
  .paper-card { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-content { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 760px) {
  .navbar-links {
    display: none;
    position: fixed; inset: 0;
    background: rgba(7, 7, 9, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column; justify-content: center; align-items: center;
    gap: 1.75rem; z-index: 999;
  }
  .navbar-links.active { display: flex; }
  .navbar-links a { font-size: 1.3rem; font-family: var(--serif); }
  .nav-actions .nav-link-ghost { display: none; }
  .navbar-burger { display: flex; z-index: 1000; }

  .hero { padding-top: 7.5rem; }
  .hero-stats { gap: 1.75rem; flex-wrap: wrap; }
  .features-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-card--lg { grid-column: auto; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .paper-card { padding: 2rem; }
  .bench-card { padding: 1.75rem; }
  .cta-card { padding: 2.75rem 1.5rem; }
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { justify-content: center; }
  .hero-float-card { display: none; }
  .metrics-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn-primary, .cta-actions .btn-secondary { justify-content: center; }
}

/* ═══════════════════════════════════════════════════════════
   IMMERSIVE LAYER — solid dark sections (no per-frame blur)
   The 3D canvas shows only behind the transparent hero, so the
   compositor never has to re-blur it during scroll.
   ═══════════════════════════════════════════════════════════ */
.section { background: var(--bg); }
.section--alt { background: var(--bg-2); }
.section--dark { background: var(--bg-dark); }
.logos-section { background: var(--bg); }
.footer { background: var(--bg); }

/* Active nav link underline */
.navbar-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -5px;
  width: 0; height: 2px;
  background: var(--clay);
  border-radius: 2px;
  transition: width 0.3s var(--ease);
}
.navbar-links a:hover::after,
.navbar-links a.active::after { width: 100%; }
.navbar-links a.active { color: var(--ink); }

/* Richer 3D scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(34px) scale(0.985);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Magnetic buttons ease back smoothly */
.btn-primary, .btn-nav { transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease); }

/* When the 3D layer is off (reduced motion / no WebGL), keep sections solid */
@media (prefers-reduced-motion: reduce) {
  .section, .section--alt, .logos-section, .footer {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: var(--bg);
  }
  .section--alt { background: var(--bg-2); }
  [data-tilt] { transform: none !important; }
}

/* ═══════════════════════════════════════════════════════════
   AI GRADIENT ACCENTS (indigo → violet → cyan)
   ═══════════════════════════════════════════════════════════ */
.scroll-progress { background: var(--grad); }

/* Solid white buttons (no gradient) */
.btn-primary, .btn-nav, .btn-on-dark {
  background: #FFFFFF;
  color: #111114 !important;
  box-shadow: 0 6px 22px rgba(0,0,0,0.28);
}
.btn-primary:hover, .btn-nav:hover, .btn-on-dark:hover {
  background: #E9E8EC;
  color: #111114 !important;
  filter: none;
}

/* Text accents — SOLID white, no gradient on any words */
.hero-title,
.hero-title em,
.hero-rotator em,
.section-title em,
.section-title--light em,
.cta-card h2 em,
.metric-value,
.bs-value-accent,
.navbar-logo span,
.footer-logo span {
  background: none;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  -webkit-text-fill-color: var(--ink);
  color: var(--ink);
}

/* Icon tiles keep a subtle accent ring (solid) */
.feature-icon { background: var(--clay-tint); border: 1px solid rgba(124,108,240,0.25); }
.team-avatar { background: var(--grad); }