/* ============ GEMINO AI — Landing Page Styles ============ */

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg-deepest);
  color: var(--fg-3);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'ss01','cv11';
}
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

::selection { background: rgba(56,189,248,0.35); color: #fff; }

/* ---------- ambient grid background applied to several sections ---------- */
.grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
}

/* ---------- section common ---------- */
.section { position: relative; padding: 120px 0; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 56px; position: relative; }

/* ---------- type helpers ---------- */
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-sky);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 24px; height: 1px;
  background: var(--accent-sky);
}
.eyebrow.no-rule::before { display: none; }

.display {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.0;
  color: var(--fg-1);
}
.headline-grad {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 280ms ease, border-color 280ms ease, backdrop-filter 280ms ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(3,9,17,0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: rgba(255,255,255,0.06);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 56px;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 500; font-size: 14px; color: #fff;
  letter-spacing: 0.06em;
}
.nav-brand .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-sky);
  box-shadow: 0 0 14px rgba(56,189,248,0.6);
}
.nav-brand .brand-word { font-weight: 600; }
.nav-brand .brand-ai { color: var(--accent-sky); font-weight: 400; opacity: 0.85; }

.nav-links { display: flex; gap: 2px; align-items: center; }
.nav-link {
  font-size: 13px; font-weight: 500; color: var(--fg-3);
  padding: 8px 14px; border-radius: 8px;
  transition: color 180ms;
  cursor: pointer;
  background: transparent; border: none;
  font-family: inherit;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: #fff; }

.nav-right { display: flex; align-items: center; gap: 12px; }
.lang-switch {
  display: inline-flex; gap: 2px; padding: 2px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 7px;
}
.lang-switch button {
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em;
  padding: 5px 9px; border-radius: 5px;
  background: transparent; border: none; color: var(--fg-5); cursor: pointer;
  transition: all 180ms;
}
.lang-switch button.active {
  background: rgba(56,189,248,0.10); color: var(--accent-sky);
}
.lang-switch button:hover:not(.active) { color: var(--fg-2); }

.btn-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 9px;
  background: #fff; color: #030911;
  font-size: 12.5px; font-weight: 500; letter-spacing: 0.01em;
  border: none; cursor: pointer;
  transition: transform 200ms, box-shadow 200ms;
}
.btn-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px rgba(56,189,248,0.5);
}

/* ---------- hero ---------- */
.hero {
  min-height: 100vh;
  padding-top: 140px; padding-bottom: 80px;
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(56,189,248,0.10), transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(99,102,241,0.08), transparent 50%),
    linear-gradient(180deg, #030911 0%, #0a1220 100%);
}
.hero-meta {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 56px;
}
.live-pulse {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; color: var(--fg-4);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.live-pulse .live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(48px, 7.2vw, 108px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.0;
  color: #fff;
  margin: 0 0 36px;
  max-width: 1100px;
}
.hero h1 em {
  font-style: italic; font-weight: 500;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 18px; color: var(--fg-3); line-height: 1.6;
  max-width: 620px; margin: 0 0 40px;
}
.hero-pills {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 44px;
}
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; border-radius: 999px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  color: var(--fg-2); letter-spacing: 0.04em;
}
.pill .ck { color: var(--accent-emerald); }

.hero-ctas { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 22px; border-radius: 10px;
  background: var(--accent-sky); color: #030911;
  font-size: 14px; font-weight: 500; letter-spacing: 0;
  border: none; cursor: pointer;
  transition: all 200ms;
}
.btn-primary:hover {
  background: #67e8f9;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px -8px rgba(56,189,248,0.55);
}
.btn-primary .arr { transition: transform 200ms; }
.btn-primary:hover .arr { transform: translateX(3px); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 22px; border-radius: 10px;
  background: transparent; color: #fff;
  font-size: 14px; font-weight: 400;
  border: 1px solid rgba(255,255,255,0.12);
  cursor: pointer;
  transition: all 200ms;
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.03); }

.scroll-cue {
  position: absolute; left: 56px; bottom: 32px;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-4); letter-spacing: 0.12em; text-transform: uppercase;
}
.scroll-cue .line {
  width: 36px; height: 1px; background: rgba(255,255,255,0.15);
  position: relative; overflow: hidden;
}
.scroll-cue .line::after {
  content: ""; position: absolute; top: 0; left: -36px;
  width: 36px; height: 1px; background: var(--accent-sky);
  animation: scroll-arrow 2.4s ease-in-out infinite;
}
@keyframes scroll-arrow {
  0% { transform: translateX(0); }
  100% { transform: translateX(72px); }
}

.hero-coords {
  position: absolute; right: 56px; top: 140px;
  text-align: right; font-family: var(--font-mono); font-size: 10.5px;
  color: var(--fg-5); letter-spacing: 0.12em; line-height: 1.8;
}
.hero-coords .row { display: flex; justify-content: flex-end; gap: 12px; }
.hero-coords .k { color: var(--fg-6); }
.hero-coords .v { color: var(--fg-3); }

/* ---------- stats strip ---------- */
.stats {
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: #030911;
  padding: 56px 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255,255,255,0.06);
}
.stats-grid .cell {
  background: #030911; padding: 32px 28px;
}
.stat-num {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(40px, 4.5vw, 64px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: #fff;
  margin-bottom: 10px;
}
.stat-num .unit { color: var(--accent-sky); }
.stat-k {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  color: var(--fg-4); letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- thesis (01/02/03) ---------- */
.thesis {
  padding: 140px 0;
  background: linear-gradient(180deg, #030911 0%, #0a1220 100%);
}
.thesis-row {
  display: grid;
  grid-template-columns: 100px 200px 1fr;
  gap: 56px;
  padding: 56px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  align-items: start;
}
.thesis-row:last-child { border-bottom: 1px solid rgba(255,255,255,0.06); }
.thesis-num {
  font-family: var(--font-mono);
  font-size: 14px; font-weight: 500;
  color: var(--accent-sky);
  letter-spacing: 0.08em;
}
.thesis-label {
  font-family: var(--font-mono);
  font-size: 13px; font-weight: 500;
  color: var(--fg-2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.thesis-body {
  font-size: 22px; line-height: 1.45;
  font-weight: 400; color: var(--fg-2);
  max-width: 720px;
  letter-spacing: -0.012em;
}
.thesis-body em {
  font-style: normal; color: #fff; font-weight: 500;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- section header ---------- */
.sec-header {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 48px;
  margin-bottom: 72px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sec-header-left { max-width: 720px; }
.sec-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 500;
  color: var(--fg-4);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 14px;
}
.sec-eyebrow .num { color: var(--accent-sky); font-weight: 700; }
.sec-eyebrow .bar { width: 32px; height: 1px; background: rgba(255,255,255,0.18); }
.sec-title {
  font-family: var(--font-sans);
  font-size: clamp(36px, 4.4vw, 64px);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #fff;
  margin: 0;
}
.sec-title em {
  font-style: italic; font-weight: 500;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sec-sub {
  font-size: 16px; color: var(--fg-3); line-height: 1.6;
  max-width: 380px; margin: 0;
}

/* ---------- products accordion ---------- */
.products { background: #0a1220; position: relative; }
.product-list {
  border-top: 1px solid rgba(255,255,255,0.08);
}
.product-row {
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 200ms;
}
.product-row:hover { background: rgba(255,255,255,0.015); }
.product-row.open { background: rgba(56,189,248,0.025); }
.product-head {
  display: grid;
  grid-template-columns: 110px 200px 1fr 60px;
  gap: 32px;
  align-items: center;
  padding: 36px 12px;
  cursor: pointer;
  width: 100%;
  border: none; background: transparent; color: inherit;
  text-align: left;
  font-family: inherit;
}
.product-num {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--fg-5); letter-spacing: 0.12em;
}
.product-row.open .product-num { color: var(--accent-sky); }
.product-row.open .product-name .accent { color: var(--accent-cyan-hi); }
.product-key {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--fg-4); letter-spacing: 0.14em;
  text-transform: uppercase;
}
.product-name {
  font-size: 30px; font-weight: 400;
  color: #fff; letter-spacing: -0.025em;
  display: flex; align-items: baseline; gap: 18px;
  flex-wrap: wrap;
}
.product-name .accent {
  color: var(--accent-sky); font-weight: 500;
}
.product-name .dash {
  color: var(--fg-5); font-weight: 300; font-size: 28px;
}
.product-name .label {
  color: var(--fg-2); font-weight: 300; font-size: 22px;
}
.product-chev {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.10);
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-3);
  justify-self: end;
  transition: all 240ms;
}
.product-row.open .product-chev {
  background: var(--accent-sky); color: #030911;
  border-color: var(--accent-sky);
  transform: rotate(45deg);
}
.product-body {
  display: grid;
  grid-template-columns: 110px 200px 1fr 60px;
  gap: 32px;
  overflow: hidden;
  max-height: 0;
  transition: max-height 400ms var(--ease-out);
}
.product-row.open .product-body { max-height: 600px; }
.product-body-inner {
  grid-column: 3 / span 1;
  padding: 0 12px 40px;
  display: grid; grid-template-columns: 1fr 320px;
  gap: 56px;
}
.product-desc {
  font-size: 17px; line-height: 1.65;
  color: var(--fg-2);
  max-width: 620px;
}
.product-meta {
  display: flex; flex-direction: column; gap: 16px;
  border-left: 1px solid rgba(255,255,255,0.08);
  padding-left: 24px;
}
.product-meta-row {
  display: flex; flex-direction: column; gap: 4px;
}
.product-meta-k {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 500;
  color: var(--fg-5); letter-spacing: 0.14em; text-transform: uppercase;
}
.product-meta-v {
  font-size: 14px; color: var(--fg-1); font-weight: 400;
}

/* ---------- philosophy ---------- */
.philosophy {
  background: #030911;
  padding: 140px 0;
  position: relative; overflow: hidden;
}
.philosophy .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.philosophy h2 {
  font-size: clamp(40px, 4.8vw, 72px);
  font-weight: 400; letter-spacing: -0.03em;
  line-height: 1.02; color: #fff; margin: 0 0 32px;
}
.philosophy h2 em {
  font-style: italic; font-weight: 500;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.philosophy .lead {
  font-size: 19px; line-height: 1.6;
  color: var(--fg-2); margin: 0 0 20px; max-width: 540px;
}
.philosophy .kicker {
  font-size: 15px; color: var(--fg-4); line-height: 1.65;
  max-width: 540px; margin: 0 0 36px;
}
.philosophy-img {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}
.philosophy-img img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.85) contrast(1.05);
}
.philosophy-img .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(3,9,17,0.2) 0%, rgba(3,9,17,0.7) 100%);
}
.philosophy-img .tag {
  position: absolute; bottom: 24px; left: 24px;
  font-family: var(--font-mono); font-size: 11px;
  color: rgba(255,255,255,0.85); letter-spacing: 0.16em; text-transform: uppercase;
  display: flex; align-items: center; gap: 10px;
}
.philosophy-img .tag::before {
  content: ""; width: 24px; height: 1px; background: rgba(255,255,255,0.6);
}

/* ---------- projects ---------- */
.projects {
  background: linear-gradient(180deg, #030911 0%, #0a1220 100%);
  position: relative;
}
.projects-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
}
.project-card {
  background: #060d1b;
  padding: 36px 32px;
  position: relative;
  min-height: 280px;
  display: flex; flex-direction: column; justify-content: space-between;
  transition: background 300ms;
  cursor: pointer;
}
.project-card:hover { background: #0a1525; }
.project-card .top {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 56px;
}
.project-num {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-5); letter-spacing: 0.16em;
}
.project-tag {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-sky);
  padding: 4px 8px; border: 1px solid rgba(56,189,248,0.25);
  border-radius: 4px;
  background: rgba(56,189,248,0.05);
}
.project-name {
  font-size: 19px; font-weight: 500; color: #fff;
  letter-spacing: -0.015em; line-height: 1.3;
  margin: 0 0 12px;
}
.project-desc {
  font-size: 13.5px; color: var(--fg-4); line-height: 1.6;
  margin: 0;
}
.project-card .arrow {
  position: absolute; top: 32px; right: 32px;
  color: var(--fg-5); transition: all 240ms;
}
.project-card:hover .arrow {
  color: var(--accent-sky);
  transform: translate(2px, -2px);
}

/* featured (BMBF / AUTOBIO-KI) project card */
.project-card.featured {
  grid-column: span 3;
  background: linear-gradient(135deg, rgba(56,189,248,0.06) 0%, rgba(99,102,241,0.04) 100%);
  border-bottom: 1px solid rgba(56,189,248,0.20);
  display: grid; grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 200px;
  padding: 36px 40px;
}
.project-card.featured:hover { background: linear-gradient(135deg, rgba(56,189,248,0.09) 0%, rgba(99,102,241,0.06) 100%); }
.project-card.featured .arrow { color: var(--accent-sky); }
.project-card.featured .top { margin-bottom: 0; }
.project-card.featured .project-tag {
  background: rgba(56,189,248,0.10);
  border-color: rgba(56,189,248,0.40);
  color: var(--accent-cyan-hi);
}
.project-card.featured .project-name { font-size: 26px; letter-spacing: -0.02em; }
.project-card.featured .project-desc { font-size: 14.5px; max-width: 560px; }
.project-card.featured .featured-cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--accent-sky); letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 14px;
  border: none; background: transparent;
  cursor: pointer; padding: 0;
  border-bottom: 1px solid transparent;
  transition: all 200ms;
}
.project-card.featured .featured-cta:hover {
  border-bottom-color: var(--accent-sky);
  gap: 12px;
}
.project-card.featured .featured-right {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
  border-left: 1px solid rgba(255,255,255,0.08);
  padding-left: 32px;
}
.project-card.featured .featured-right .row { display: flex; flex-direction: column; gap: 3px; }
.project-card.featured .featured-right .k {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--fg-5); letter-spacing: 0.14em; text-transform: uppercase;
}
.project-card.featured .featured-right .v {
  font-size: 14px; color: var(--fg-1); line-height: 1.35;
}

/* ---------- research (AUTOBIO-KI) ---------- */
.research {
  position: relative;
  padding: 120px 0 140px;
  background: linear-gradient(180deg, #0a1220 0%, #030911 100%);
  overflow: hidden;
}
.research-card {
  position: relative;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  padding: 48px;
  background:
    linear-gradient(180deg, rgba(13,24,41,0.6) 0%, rgba(6,13,27,0.6) 100%);
  overflow: hidden;
}
.research-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,189,248,0.55), transparent);
}
.research-card-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.research-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent-sky); letter-spacing: 0.18em; text-transform: uppercase;
}
.research-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-sky);
  box-shadow: 0 0 10px var(--accent-sky);
  animation: pulse 2.4s ease-in-out infinite;
}
.research-volume { text-align: right; display: flex; flex-direction: column; gap: 4px; }
.research-volume .k {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 500;
  color: var(--fg-5); letter-spacing: 0.14em; text-transform: uppercase;
}
.research-volume .v {
  font-size: 22px; font-weight: 400; color: #fff;
  letter-spacing: -0.02em;
}
.research-code {
  margin: 0 0 14px;
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 400;
  letter-spacing: -0.04em;
  color: #fff;
  font-family: var(--font-sans);
}
.research-tagline {
  margin: 0 0 40px;
  font-size: 18px; line-height: 1.55;
  color: var(--fg-2); max-width: 760px;
}
.research-grid {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 24px;
}
.research-meta {
  display: flex; flex-direction: column; gap: 18px;
  border-left: 1px solid rgba(56,189,248,0.3);
  padding-left: 24px;
}
.research-meta-row {
  display: flex; flex-direction: column; gap: 4px;
}
.research-meta-row .k {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 500;
  color: var(--fg-5); letter-spacing: 0.14em; text-transform: uppercase;
}
.research-meta-row .v {
  font-size: 14.5px; color: var(--fg-1); line-height: 1.45;
}
.research-body-lead {
  font-size: 16px; line-height: 1.6; color: var(--fg-2);
  margin: 0 0 28px;
}
.research-contrib-label {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  color: var(--accent-sky); letter-spacing: 0.16em; text-transform: uppercase;
  margin-bottom: 14px;
}
.research-contrib {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.research-contrib li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 14.5px; color: var(--fg-2); line-height: 1.5;
}
.research-contrib li .bullet {
  color: var(--accent-sky); font-family: var(--font-mono);
  flex-shrink: 0;
}
.research-partners {
  display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap;
  padding-top: 8px;
}
.research-partners .k {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 500;
  color: var(--fg-5); letter-spacing: 0.14em; text-transform: uppercase;
  flex-shrink: 0;
}
.research-partners .v {
  font-size: 13.5px; color: var(--fg-3); line-height: 1.55;
}

/* ---------- ecosystem ---------- */
.ecosystem {
  padding: 140px 0;
  background: #0a1220;
}
.ecosystem .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.ecosystem-img {
  position: relative; aspect-ratio: 4/3;
  border-radius: 8px; overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}
.ecosystem-img img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.85);
}
.ecosystem-img .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(45deg, rgba(3,9,17,0.6) 0%, rgba(3,9,17,0) 60%);
}
.ecosystem h2 {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 400; letter-spacing: -0.03em;
  line-height: 1.05; color: #fff; margin: 0 0 28px;
}
.ecosystem h2 em {
  font-style: italic; font-weight: 500;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ecosystem p {
  font-size: 16px; line-height: 1.65; color: var(--fg-3);
  margin: 0 0 18px;
}
.ecosystem-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px;
  font-weight: 500; color: var(--accent-sky);
  letter-spacing: 0.06em; text-transform: uppercase;
  margin-top: 16px;
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  transition: all 200ms;
}
.ecosystem-link:hover {
  border-bottom-color: var(--accent-sky);
  gap: 14px;
}

.compliance {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.compliance-label {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  color: var(--fg-5); letter-spacing: 0.16em; text-transform: uppercase;
  margin-bottom: 16px;
}
.compliance-list {
  display: flex; flex-wrap: wrap; gap: 8px;
}

/* ---------- final CTA ---------- */
.cta-final {
  background: #030911;
  padding: 160px 0;
  position: relative; overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.cta-final::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(56,189,248,0.10), transparent 60%),
    radial-gradient(ellipse at 30% 80%, rgba(99,102,241,0.06), transparent 50%);
  pointer-events: none;
}
.cta-final .wrap { text-align: center; position: relative; }
.cta-final h2 {
  font-size: clamp(48px, 6.5vw, 104px);
  font-weight: 300; letter-spacing: -0.035em;
  line-height: 1.0; color: #fff; margin: 0 auto 32px;
  max-width: 1100px;
}
.cta-final h2 em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.cta-final p {
  font-size: 18px; line-height: 1.6; color: var(--fg-3);
  max-width: 560px; margin: 0 auto 48px;
}
.cta-final .btns {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}

/* contact-inline form */
.contact-form {
  margin: 56px auto 0;
  max-width: 560px;
  padding: 32px;
  background: rgba(13,24,41,0.5);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  backdrop-filter: blur(12px);
  text-align: left;
}
.contact-form .title {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.contact-form h3 {
  margin: 0; font-size: 15px; font-weight: 500; color: #fff;
  letter-spacing: -0.005em;
}
.contact-form .reply {
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--fg-4); letter-spacing: 0.12em; text-transform: uppercase;
}
.field-group { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.field-group.single { grid-template-columns: 1fr; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  color: var(--fg-5); letter-spacing: 0.16em; text-transform: uppercase;
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 13px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  color: #fff;
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: all 200ms;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: rgba(56,189,248,0.45);
  background: rgba(255,255,255,0.05);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.10);
}
.field textarea { resize: vertical; min-height: 96px; }
.contact-form .submit-row {
  display: flex; gap: 10px; align-items: center; justify-content: space-between;
  margin-top: 16px;
}
.contact-form .submit-row .legal {
  font-size: 11px; color: var(--fg-5); line-height: 1.5; max-width: 280px;
}
.contact-form button[type="submit"] {
  padding: 13px 20px; border-radius: 8px;
  background: var(--accent-sky); color: #030911;
  font-weight: 500; font-size: 13px;
  border: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: all 200ms;
  white-space: nowrap;
}
.contact-form button[type="submit"]:hover { background: #67e8f9; transform: translateY(-1px); }
.contact-form button[type="submit"]:disabled {
  background: rgba(255,255,255,0.08); color: var(--fg-4); cursor: wait;
}
.success {
  text-align: center; padding: 24px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.success .ck-big {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(52,211,153,0.12);
  border: 1px solid rgba(52,211,153,0.3);
  color: var(--accent-emerald);
  display: flex; align-items: center; justify-content: center;
}
.success h4 { margin: 0; color: #fff; font-size: 16px; }
.success p { margin: 0; font-size: 13px; color: var(--fg-3); }

/* ---------- footer ---------- */
.footer {
  background: #020609;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
}
.footer-brand img { height: 24px; width: 24px; }
.footer-brand .name {
  font-size: 15px; font-weight: 600; color: #fff; letter-spacing: 0.04em;
}
.footer-brand .name .ai { color: var(--accent-sky); font-weight: 400; }
.footer-tag {
  font-size: 12.5px; color: var(--fg-5); line-height: 1.65;
  margin: 0 0 20px; max-width: 280px;
}
.footer-legal {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-6); line-height: 1.7;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  color: var(--fg-4); letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 18px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col li { font-size: 13px; color: var(--fg-3); }
.footer-col a { color: var(--fg-3); transition: color 180ms; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.04);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px; color: var(--fg-6);
  letter-spacing: 0.04em;
}
.footer-bottom a { color: var(--fg-5); }
.footer-bottom a:hover { color: var(--fg-2); }

/* ---------- side-rail section index ---------- */
.section-rail {
  position: fixed; top: 50%; right: 24px;
  transform: translateY(-50%);
  z-index: 50;
  display: flex; flex-direction: column; gap: 4px;
  pointer-events: none;
  opacity: 0; transition: opacity 400ms ease;
}
.section-rail.visible { opacity: 1; pointer-events: auto; }
.rail-item {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0;
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--fg-5); letter-spacing: 0.12em; text-transform: uppercase;
  cursor: pointer; background: transparent; border: none;
  transition: color 200ms;
}
.rail-item:hover { color: var(--fg-2); }
.rail-item .bar {
  width: 24px; height: 1px; background: rgba(255,255,255,0.2);
  transition: all 200ms;
}
.rail-item.active { color: #fff; }
.rail-item.active .bar { width: 36px; background: var(--accent-sky); }

/* ---------- reveal animation ---------- */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}
.reveal.in {
  opacity: 1; transform: translateY(0);
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .wrap { padding: 0 32px; }
  .nav-inner { padding: 0 32px; }
  .nav-links { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .thesis-row { grid-template-columns: 80px 1fr; }
  .thesis-row .thesis-label { display: none; }
  .product-head { grid-template-columns: 60px 1fr 40px; gap: 20px; padding: 28px 0; }
  .product-key { display: none; }
  .product-name { font-size: 24px; }
  .product-name .label { font-size: 16px; }
  .product-body { grid-template-columns: 60px 1fr 40px; }
  .product-body-inner { grid-column: 2 / span 1; grid-template-columns: 1fr; gap: 24px; }
  .product-meta { border-left: none; padding-left: 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.06); }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; grid-template-columns: 1fr; gap: 24px; }
  .project-card.featured .featured-right { border-left: none; padding-left: 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.08); }
  .research-card { padding: 28px; }
  .research-grid { grid-template-columns: 1fr; gap: 32px; }
  .research-meta { padding-left: 16px; }
  .philosophy .wrap, .ecosystem .wrap { grid-template-columns: 1fr; gap: 48px; }
  .section-rail { display: none; }
  .hero-coords { display: none; }
  .scroll-cue { left: 32px; }
  .sec-header { flex-direction: column; align-items: flex-start; gap: 24px; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 56px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .nav-right .btn-cta { display: none; }
  .field-group { grid-template-columns: 1fr; }
}