/* =========================================================================
   Genesis · 杰尼塞斯
   One stylesheet. All decisions derived from the design plan in /Skills.md
   ========================================================================= */

/* ---- font-face (local DouyinSans, no remote fetch)
   Note: DouyinSans is published as a single Bold weight only.
   We expose it as "DouyinSans" so all text uses the brand face;
   weight variation is faked through CSS letter-spacing + size. */
@font-face {
  font-family: "DouyinSans";
  font-weight: 400;
  font-style: normal;
  font-display: block;
  src: url("./fonts/DouyinSansBold.ttf") format("truetype");
}
@font-face {
  font-family: "DouyinSans";
  font-weight: 700;
  font-style: normal;
  font-display: block;
  src: url("./fonts/DouyinSansBold.ttf") format("truetype");
}

/* ---- design tokens ---- */
:root {
  /* palette: deliberate, not the AI-default triad */
  --ink:        #04060E;   /* deep tech black with blue undertone */
  --ink-2:      #0B1430;   /* midnight, panel base */
  --ink-3:      #111A3A;   /* elevated panel */
  --frost:      #E8F0FF;   /* primary text on dark */
  --frost-dim:  #B7C2DA;   /* secondary text */
  --frost-mute: #6B7796;   /* tertiary text */
  --iris:       #7B8CFF;   /* accent — periwinkle, not generic tech-blue */
  --iris-glow:  rgba(123, 140, 255, 0.45);
  --magma:      #FF5A1F;   /* CTA accent — warm volcanic orange; the risk */
  --magma-glow: rgba(255, 90, 31, 0.35);
  --line:       rgba(232, 240, 255, 0.08);
  --line-2:     rgba(232, 240, 255, 0.16);

  /* type scale */
  --display: clamp(2.6rem, 6vw + 0.5rem, 6.2rem);
  --display-sm: clamp(2rem, 3.8vw + 0.5rem, 3.6rem);
  --h2: clamp(1.8rem, 2.6vw + 0.6rem, 3.4rem);
  --h3: clamp(1.2rem, 0.8vw + 0.8rem, 1.6rem);
  --body: clamp(1rem, 0.2vw + 0.9rem, 1.125rem);
  --small: 0.875rem;
  --micro: 0.75rem;

  /* spacing */
  --pad-x: clamp(1.25rem, 4vw, 4rem);
  --section-y: clamp(4rem, 7vw, 8rem);
  --max: 1320px;

  /* motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; background: none; border: 0; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
input, select, textarea { font: inherit; color: inherit; }

/* ---- base ---- */
body {
  font-family: "DouyinSans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  font-weight: 400;
  font-size: var(--body);
  line-height: 1.55;
  color: var(--frost);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

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

/* =========================================================================
   SIGNATURE · DYNAMIC BACKGROUND
   The single memorable element. Five layers stacked behind everything:
   - neural particle field (canvas, JS-driven)
   - sensor calibration grid (CSS, fixed parallax)
   - horizon gradient (CSS, scroll-shifted hue)
   - film grain noise (CSS, fixed)
   - scanline (CSS, animated, very subtle)
   ========================================================================= */
.bg-stage {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: var(--ink);
}
.bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}
.bg-grid {
  position: absolute;
  inset: -10%;
  background-image:
    linear-gradient(to right, rgba(123, 140, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(123, 140, 255, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 0%, transparent 75%);
  animation: gridDrift 60s linear infinite;
}
@keyframes gridDrift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-64px, -64px, 0); }
}
.bg-horizon {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70vh;
  background:
    radial-gradient(60% 80% at 50% 100%, var(--iris-glow) 0%, transparent 60%),
    radial-gradient(80% 60% at 50% 0%, rgba(255, 90, 31, 0.18) 0%, transparent 60%),
    radial-gradient(40% 40% at 80% 20%, rgba(123, 140, 255, 0.25) 0%, transparent 60%);
  filter: blur(40px) saturate(120%);
  animation: horizonShift 18s var(--ease-soft) infinite alternate;
  opacity: 0.9;
}
@keyframes horizonShift {
  from { transform: translateY(0) scale(1); filter: blur(40px) saturate(120%) hue-rotate(0deg); }
  to   { transform: translateY(-3vh) scale(1.05); filter: blur(48px) saturate(140%) hue-rotate(20deg); }
}
.bg-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.5'/></svg>");
  opacity: 0.07;
  mix-blend-mode: overlay;
}
.bg-scanline {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(123, 140, 255, 0.07) 50%, transparent 100%);
  background-size: 100% 6px;
  opacity: 0.35;
  animation: scan 8s linear infinite;
  mix-blend-mode: screen;
}
@keyframes scan {
  from { background-position: 0 -100%; }
  to   { background-position: 0 100%; }
}

/* =========================================================================
   NAV
   ========================================================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.9rem var(--pad-x);
  background: linear-gradient(to bottom, rgba(4, 6, 14, 0.78), rgba(4, 6, 14, 0.35) 70%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition: background 0.4s var(--ease);
}
.nav.is-stuck {
  background: rgba(4, 6, 14, 0.92);
  border-bottom: 1px solid var(--line);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.nav__brand em { font-style: normal; color: var(--iris); font-weight: 400; margin-left: 0.35rem; }
.nav__mark {
  width: 28px; height: 28px;
  display: inline-flex;
  color: var(--iris);
  filter: drop-shadow(0 0 6px var(--iris-glow));
}
.nav__mark svg { width: 100%; height: 100%; }
.nav__links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
  font-size: 0.92rem;
}
.nav__links a {
  position: relative;
  color: var(--frost-dim);
  transition: color 0.3s var(--ease);
}
.nav__links a:hover { color: var(--frost); }
.nav__links a.is-active { color: var(--frost); }
.nav__links a.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--magma);
}
.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--frost);
  transition: all 0.3s var(--ease);
}
.nav__cta:hover {
  background: var(--magma);
  border-color: var(--magma);
  color: var(--ink);
  box-shadow: 0 0 24px var(--magma-glow);
}
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 6px;
}
.nav__burger span {
  width: 22px; height: 2px;
  background: var(--frost);
  transition: 0.3s var(--ease);
}

@media (max-width: 920px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav.is-open .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    padding: 1rem var(--pad-x) 1.5rem;
    background: var(--ink-2);
    border-bottom: 1px solid var(--line);
    gap: 1rem;
  }
  .nav.is-open .nav__cta {
    display: inline-flex;
    align-self: flex-start;
    margin-left: var(--pad-x);
  }
}

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(7rem + var(--pad-x)) var(--pad-x) 4rem;
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
  max-width: var(--max);
  margin: 0 auto;
}
.hero__meta {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  font-size: var(--micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--iris);
}
.eyebrow .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--magma);
  box-shadow: 0 0 10px var(--magma-glow);
  animation: pulse 2.4s var(--ease-soft) infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}
.eyebrow--mute { color: var(--frost-mute); }

.hero__title {
  font-family: "DouyinSans", sans-serif;
  font-size: var(--display);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--frost);
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--iris) 0%, var(--frost) 60%, var(--magma) 110%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.line { display: block; overflow: hidden; }
.line > * { display: inline-block; transform: translateY(110%); }
.line--2 { margin-top: 0.05em; }
/* Reveal animation: items are visible by default (no FOUC, accessible).
   The `.is-in` class is a progressive enhancement that, when added
   quickly enough (via IO), triggers a subtle one-time entrance. */
[data-reveal] { transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.line > * { display: inline-block; transform: translateY(110%); }
.line--2 { margin-top: 0.05em; }
/* Headline lines use a slightly tighter transition */
.hero__title .line.is-in > * { transform: translateY(0); transition: transform 1s var(--ease); }
/* For data-reveal: only animate in if JS pre-hid it (we don't hide by default anymore) */

.hero__sub {
  max-width: 720px;
  font-size: clamp(1.05rem, 0.4vw + 0.9rem, 1.2rem);
  line-height: 1.7;
  color: var(--frost-dim);
  margin: 0;
}
.hero__cta {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), background 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary {
  background: var(--magma);
  color: var(--ink);
  box-shadow: 0 6px 24px var(--magma-glow), inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}
.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.8s var(--ease);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px var(--magma-glow); }
.btn--primary:hover::before { transform: translateX(100%); }
.btn--ghost {
  background: transparent;
  color: var(--frost);
  border: 1px solid var(--line-2);
}
.btn--ghost:hover {
  background: rgba(232, 240, 255, 0.06);
  border-color: var(--iris);
  color: var(--iris);
}

/* live data strip */
.hero__strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-2);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}
.strip-cell {
  padding: 1.4rem 1.2rem;
  background: rgba(11, 20, 48, 0.55);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: background 0.3s var(--ease);
}
.strip-cell:hover { background: rgba(17, 26, 58, 0.85); }
.strip-num {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  font-size: clamp(1.6rem, 2vw + 0.4rem, 2.4rem);
  font-weight: 700;
  color: var(--frost);
  letter-spacing: -0.02em;
}
.strip-label {
  font-size: var(--micro);
  color: var(--frost-mute);
  letter-spacing: 0.08em;
}
@media (max-width: 760px) {
  .hero__strip { grid-template-columns: repeat(2, 1fr); }
}

/* ticker */
.hero__ticker {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.ticker-track {
  display: inline-flex;
  gap: 2rem;
  white-space: nowrap;
  font-size: var(--micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--frost-mute);
  animation: ticker 60s linear infinite;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =========================================================================
   SECTION SHELL
   ========================================================================= */
.section {
  position: relative;
  padding: var(--section-y) var(--pad-x);
  max-width: var(--max);
  margin: 0 auto;
}
.section--dark {
  background: linear-gradient(180deg, transparent, rgba(11, 20, 48, 0.6) 30%, rgba(11, 20, 48, 0.6) 70%, transparent);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}
.section--dark > * { max-width: var(--max); margin-left: auto; margin-right: auto; padding-left: var(--pad-x); padding-right: var(--pad-x); }
.section--adas {
  background:
    linear-gradient(180deg, transparent, rgba(255, 90, 31, 0.04) 40%, transparent),
    radial-gradient(60% 50% at 90% 0%, rgba(123, 140, 255, 0.07) 0%, transparent 60%);
}

.section__head { margin-bottom: 3rem; max-width: 780px; }
.section__head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section__no {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--iris);
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  margin-bottom: 1.2rem;
}
.section__title {
  font-size: var(--h2);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 1.1rem;
}
.section__title em {
  font-style: normal;
  color: var(--iris);
  background: linear-gradient(120deg, var(--iris), var(--magma));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section__lead {
  font-size: 1.05rem;
  color: var(--frost-dim);
  margin: 0;
  max-width: 640px;
  line-height: 1.7;
}
.section__head--center .section__lead { margin-left: auto; margin-right: auto; }

/* =========================================================================
   WAVE / SPLIT
   ========================================================================= */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } }
.split__heading {
  font-size: var(--h3);
  font-weight: 700;
  margin: 0 0 1.5rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line-2);
  letter-spacing: 0.02em;
}
.duo-list { display: flex; flex-direction: column; gap: 1.4rem; }
.duo-list li {
  padding: 1.4rem 1.4rem 1.4rem 4rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.4);
  position: relative;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), background 0.4s var(--ease);
}
.duo-list li:hover {
  transform: translateY(-3px);
  border-color: var(--iris);
  background: rgba(17, 26, 58, 0.6);
}
.duo-list__no {
  position: absolute;
  top: 1.2rem; left: 1.2rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--iris);
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--iris);
  border-radius: 3px;
}
.duo-list h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--frost);
}
.duo-list p {
  font-size: 0.95rem;
  color: var(--frost-dim);
  margin: 0;
  line-height: 1.65;
}
.duo-list--warn li { border-color: rgba(255, 90, 31, 0.18); }
.duo-list--warn .duo-list__no { color: var(--magma); border-color: var(--magma); }
.duo-list--warn li:hover { border-color: var(--magma); }

/* belief quote */
.belief {
  margin-top: 4rem;
  padding: 2.4rem 2rem;
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  text-align: center;
}
.belief__quote {
  font-size: clamp(1.4rem, 1.4vw + 1rem, 2rem);
  font-weight: 700;
  margin: 0 0 0.6rem;
  background: linear-gradient(120deg, var(--frost), var(--iris) 50%, var(--frost));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.belief__by {
  color: var(--frost-mute);
  font-size: 0.95rem;
  margin: 0;
}
.belief--soft {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(123, 140, 255, 0.04);
}

/* =========================================================================
   AXIOMS
   ========================================================================= */
.axioms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  counter-reset: axiom;
}
@media (max-width: 880px) { .axioms { grid-template-columns: 1fr; } }
.axiom {
  padding: 2rem 1.6rem 2rem;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(123, 140, 255, 0.08) 0%, transparent 60%),
    rgba(11, 20, 48, 0.6);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.axiom::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent 60%, var(--iris) 130%);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  pointer-events: none;
  mix-blend-mode: overlay;
}
.axiom:hover { transform: translateY(-4px); border-color: var(--iris); }
.axiom:hover::after { opacity: 1; }
.axiom__no {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--iris);
  display: inline-block;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--iris);
}
.axiom h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
}
.axiom p {
  color: var(--frost-dim);
  line-height: 1.7;
  margin: 0 0 1.4rem;
}
.axiom__tag {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--magma);
}

/* =========================================================================
   ENGINE GRID
   ========================================================================= */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
@media (max-width: 1080px) { .engine-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .engine-grid { grid-template-columns: 1fr; } }
.engine-card {
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.45);
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.engine-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), rgba(123, 140, 255, 0.12) 0%, transparent 40%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.engine-card:hover {
  border-color: var(--iris);
  transform: translateY(-3px);
}
.engine-card:hover::before { opacity: 1; }
.engine-card__icon {
  width: 44px; height: 44px;
  margin-bottom: 1rem;
  color: var(--iris);
}
.engine-card__icon svg { width: 100%; height: 100%; }
.engine-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.engine-card p {
  color: var(--frost-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 1rem;
}
.engine-card ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--frost-mute);
  border-top: 1px dashed var(--line-2);
  padding-top: 0.8rem;
}
.engine-card li {
  position: relative;
  padding-left: 1rem;
}
.engine-card li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--iris);
  font-weight: 700;
}

/* stack chips */
.stack-row {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.45);
}
.stack-row__label {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--frost-mute);
}
.stack-row__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.stack-row__chips span {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--frost-dim);
  transition: 0.3s var(--ease);
}
.stack-row__chips span:hover {
  background: var(--iris);
  color: var(--ink);
  border-color: var(--iris);
}

/* =========================================================================
   SOLUTIONS
   ========================================================================= */
.solutions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
@media (max-width: 920px) { .solutions { grid-template-columns: 1fr; } }
.solution {
  position: relative;
  padding: 2.2rem 1.8rem 1.8rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.55);
  transition: 0.4s var(--ease);
}
.solution:hover {
  border-color: var(--magma);
  transform: translateY(-4px);
}
.solution__no {
  position: absolute;
  top: 1.4rem; right: 1.4rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--magma);
}
.solution h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
}
.solution p {
  color: var(--frost-dim);
  line-height: 1.65;
  margin: 0 0 1.2rem;
}
.solution__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 1px dashed var(--line-2);
  padding-top: 1rem;
  font-size: 0.9rem;
  color: var(--frost-dim);
}
.solution__list li {
  padding-left: 1.2rem;
  position: relative;
}
.solution__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55rem;
  width: 8px; height: 2px;
  background: var(--iris);
}

/* =========================================================================
   L4 ADAS GRID
   ========================================================================= */
.adas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 1080px) { .adas-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .adas-grid { grid-template-columns: 1fr; } }
.adas-card {
  position: relative;
  padding: 1.8rem 1.6rem;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background:
    repeating-linear-gradient(135deg, rgba(255, 90, 31, 0.025) 0 2px, transparent 2px 8px),
    rgba(11, 20, 48, 0.55);
  transition: 0.4s var(--ease);
}
.adas-card:hover {
  border-color: var(--magma);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 90, 31, 0.08);
}
.adas-card__head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
}
.adas-card__no {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--magma);
  letter-spacing: 0.15em;
}
.adas-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
}
.adas-card p {
  color: var(--frost-dim);
  font-size: 0.93rem;
  line-height: 1.65;
  margin: 0 0 1.2rem;
}
.adas-card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin: 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line-2);
}
.adas-card__metrics > div { display: flex; flex-direction: column; gap: 0.2rem; }
.adas-card__metrics dt {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  color: var(--frost-mute);
  letter-spacing: 0.1em;
}
.adas-card__metrics dd {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--magma);
  margin: 0;
}

.adas-compliance {
  margin-top: 2.5rem;
  padding: 1.4rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.55);
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}
.adas-compliance__title {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--iris);
}
.adas-compliance__items {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.adas-compliance__items span {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--frost-dim);
}

.adas-phases {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  counter-reset: phase;
}
@media (max-width: 920px) { .adas-phases { grid-template-columns: repeat(2, 1fr); } }
.adas-phases li {
  position: relative;
  padding: 1.4rem 1rem;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.4);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.adas-phases li::before {
  content: "";
  position: absolute;
  top: 1.4rem; right: 1rem;
  width: 30%; height: 1px;
  background: linear-gradient(to right, var(--iris), transparent);
}
.adas-phases li:last-child::before { display: none; }
.adas-phases__no {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  color: var(--magma);
  letter-spacing: 0.15em;
}
.adas-phases strong { font-weight: 700; font-size: 1rem; }
.adas-phases em {
  font-style: normal;
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  color: var(--frost-mute);
}

/* =========================================================================
   CASES
   ========================================================================= */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
@media (max-width: 920px) { .cases { grid-template-columns: 1fr; } }
.case {
  padding: 2rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.45);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: 0.4s var(--ease);
}
.case:hover {
  border-color: var(--iris);
  transform: translateY(-3px);
}
.case__industry {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--iris);
  text-transform: uppercase;
}
.case h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
}
.case__hl {
  font-size: 1rem;
  color: var(--magma);
  font-weight: 700;
  margin: 0;
}
.case p {
  color: var(--frost-dim);
  line-height: 1.7;
  margin: 0;
  font-size: 0.95rem;
}
.case__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed var(--line-2);
}
.case__stats li { display: flex; flex-direction: column; gap: 0.2rem; }
.case__stats strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--frost);
  letter-spacing: -0.01em;
}
.case__stats span {
  font-size: var(--micro);
  color: var(--frost-mute);
  letter-spacing: 0.1em;
}

/* =========================================================================
   COOPERATION (PATH)
   ========================================================================= */
.path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  counter-reset: step;
}
@media (max-width: 920px) { .path { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .path { grid-template-columns: 1fr; } }
.path__step {
  padding: 2rem 1.6rem;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.45);
  position: relative;
  transition: 0.4s var(--ease);
}
.path__step:hover {
  border-color: var(--iris);
  transform: translateY(-3px);
}
.path__step--last { border-color: rgba(255, 90, 31, 0.3); background: rgba(255, 90, 31, 0.05); }
.path__step--last:hover { border-color: var(--magma); }
.path__no {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--iris);
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--iris);
}
.path__step--last .path__no { color: var(--magma); border-bottom-color: var(--magma); }
.path__step h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.6rem;
}
.path__step p {
  color: var(--frost-dim);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

/* =========================================================================
   CONTACT
   ========================================================================= */
.section--contact {
  background: linear-gradient(180deg, transparent, rgba(255, 90, 31, 0.04));
}
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
@media (max-width: 920px) { .contact { grid-template-columns: 1fr; } }
.contact__intro h2 {
  font-size: var(--display-sm);
  font-weight: 700;
  line-height: 1.1;
  margin: 1rem 0;
}
.contact__intro h2 br { display: block; }
.contact__intro p {
  color: var(--frost-dim);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 0 1.5rem;
}
.contact__channels {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
}
.contact__channels li {
  display: flex;
  gap: 1rem;
  font-size: 0.95rem;
}
.contact__channels li span {
  color: var(--frost-mute);
  font-family: "JetBrains Mono", monospace;
  font-size: var(--micro);
  letter-spacing: 0.15em;
  min-width: 90px;
}
.contact__channels li a { color: var(--frost); transition: color 0.3s var(--ease); }
.contact__channels li a:hover { color: var(--magma); }

.contact__form {
  padding: 2rem;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background: rgba(11, 20, 48, 0.6);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact__form h3 {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
  font-weight: 700;
}
.contact__form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: var(--micro);
  letter-spacing: 0.1em;
  color: var(--frost-mute);
}
.contact__form input,
.contact__form select,
.contact__form textarea {
  padding: 0.8rem 0.9rem;
  background: rgba(4, 6, 14, 0.7);
  border: 1px solid var(--line-2);
  border-radius: 3px;
  color: var(--frost);
  font-size: 0.95rem;
  letter-spacing: normal;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
  font-family: inherit;
}
.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--iris);
  background: rgba(17, 26, 58, 0.7);
}
.contact__form button {
  align-self: flex-start;
  margin-top: 0.5rem;
}
.contact__hint {
  margin: 0;
  font-size: 0.9rem;
  min-height: 1.2em;
  color: var(--iris);
}
.contact__hint.is-success { color: var(--magma); }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
  margin-top: 4rem;
  padding: 4rem var(--pad-x) 1.5rem;
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}
.footer__top {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 3rem;
}
@media (max-width: 880px) { .footer__top { grid-template-columns: 1fr; } }
.footer__brand { display: flex; align-items: flex-start; gap: 0.8rem; }
.footer__brand p {
  color: var(--frost-dim);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.7;
}
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
@media (max-width: 520px) { .footer__nav { grid-template-columns: 1fr 1fr; } }
.footer__nav h4 {
  font-size: var(--micro);
  letter-spacing: 0.2em;
  color: var(--iris);
  margin: 0 0 0.8rem;
  text-transform: uppercase;
}
.footer__nav a {
  display: block;
  font-size: 0.92rem;
  color: var(--frost-dim);
  padding: 0.25rem 0;
  transition: color 0.3s var(--ease);
}
.footer__nav a:hover { color: var(--magma); }

.footer__bottom {
  max-width: var(--max);
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: var(--micro);
  color: var(--frost-mute);
  letter-spacing: 0.08em;
}

/* =========================================================================
   A11Y / MOTION
   ========================================================================= */
:focus-visible {
  outline: 2px solid var(--magma);
  outline-offset: 3px;
  border-radius: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .bg-stage { display: none; }
}