/* =========================================================
   INFERA — cinematic landing
   ========================================================= */

:root {
  --bg-0: #06080c;
  --bg-1: #0a0d13;
  --bg-2: #0f141b;
  --bg-3: #131923;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text-1: #f3f5f8;
  --text-2: #c2c9d4;
  --text-3: #8893a3;
  --text-4: #5b6675;
  --accent: #5eead4;
  --accent-2: #38bdf8;
  --warn: #f97316;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow-soft: 0 30px 80px -40px rgba(0, 0, 0, 0.9);

  --font-sans: 'Pretendard', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  --font-display: 'Inter', 'Pretendard', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1200px;
  --nav-h: 64px;
}

/* ---------- base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

[hidden] { display: none !important; }

body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--text-1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  overflow-x: hidden;
}

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

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

[hidden] { display: none !important; }

::selection { background: var(--accent); color: #042f2e; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(6, 8, 12, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease;
}

.nav.is-scrolled {
  background: rgba(6, 8, 12, 0.85);
  border-bottom-color: var(--line);
}

.nav__inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-1);
  letter-spacing: 0.06em;
}
.brand__mark { display: inline-flex; color: var(--accent); }
.brand__text { font-family: var(--font-display); font-weight: 800; font-size: 16px; letter-spacing: 0.18em; }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__menu a {
  font-size: 13.5px;
  color: var(--text-2);
  letter-spacing: 0.02em;
  transition: color .15s ease;
}
.nav__menu a:hover { color: var(--text-1); }

.nav__cta {
  border: 1px solid var(--line-strong);
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-1) !important;
  transition: background .15s ease, border-color .15s ease;
}
.nav__cta:hover {
  background: rgba(94, 234, 212, 0.08);
  border-color: var(--accent);
}

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  color: var(--text-1);
}
.nav__burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(10, 13, 19, 0.98);
  border-bottom: 1px solid var(--line);
  flex-direction: column;
  padding: 8px 0;
}
.nav__mobile.is-open {
  display: flex;
}
.nav__mobile a {
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  font-size: 14px;
}
.nav__mobile a:last-child { border-bottom: none; }

/* ---------- sections ---------- */
.section {
  padding: 120px 0;
  position: relative;
  background: var(--bg-0);
}
.section--dark { background: var(--bg-1); }
.section--darker { background: #04060a; }

.section__head {
  max-width: 820px;
  margin: 0 auto 64px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid rgba(94, 234, 212, 0.25);
  border-radius: 999px;
  margin-bottom: 18px;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  color: var(--text-1);
}
.section__sub {
  color: var(--text-3);
  font-size: 16px;
  margin: 0;
}
.accent { color: var(--accent); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--accent);
  color: #042f2e;
}
.btn--primary:hover { background: #99f6e4; }

.btn--ghost {
  background: transparent;
  color: var(--text-1);
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  border-color: var(--text-1);
  background: rgba(255,255,255,0.04);
}

.btn--block {
  width: 100%;
  padding: 16px;
  font-size: 15px;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--nav-h) + 60px);
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-0);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: -100px;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 75%);
}

.hero__diagram {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}

.hero__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
}
.hero__glow--a { top: 10%; left: -120px; background: #5eead4; }
.hero__glow--b { bottom: 0; right: -180px; background: #38bdf8; opacity: 0.25; }

.hero__vignette {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 0%, rgba(6,8,12,0.4) 60%, rgba(6,8,12,0.9) 100%),
    linear-gradient(180deg, rgba(6,8,12,0.6) 0%, rgba(6,8,12,0.85) 100%);
}

.hero__noise {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2' /></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.6'/></svg>");
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 10px;
  border: 1px solid rgba(94,234,212,0.35);
  background: rgba(94, 234, 212, 0.06);
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--text-2);
  margin-bottom: 36px;
}
.badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(94,234,212,0.15);
  animation: pulse 2s infinite ease-in-out;
}
.badge__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--accent);
  border-right: 1px solid rgba(94,234,212,0.35);
  padding-right: 10px;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(94,234,212,0.15); }
  50% { box-shadow: 0 0 0 8px rgba(94,234,212,0); }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(64px, 14vw, 180px);
  letter-spacing: 0.04em;
  line-height: 0.95;
  margin: 0 0 18px;
  background: linear-gradient(180deg, #ffffff 0%, #c5d1e0 60%, #5b6675 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__slogan {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(16px, 2.2vw, 22px);
  letter-spacing: 0.04em;
  color: var(--text-2);
  margin: 0 0 30px;
}

.hero__lead {
  max-width: 640px;
  margin: 0 auto 44px;
  color: var(--text-3);
  font-size: 15.5px;
  line-height: 1.75;
}
.br-md { display: none; }
@media (min-width: 768px) { .br-md { display: inline; } }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 80px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding-top: 32px;
}
.stat {
  text-align: center;
  padding: 0 10px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; }
.stat__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 44px);
  color: var(--text-1);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.stat__unit {
  font-size: 14px;
  margin-left: 4px;
  color: var(--text-3);
  font-weight: 500;
}
.stat__sep {
  color: var(--accent);
  margin: 0 2px;
}
.stat__label {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--text-4);
}
.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg, var(--text-4), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: scrollLine 2.5s infinite ease-in-out;
}
@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  gap: 22px;
}
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  position: relative;
  padding: 30px;
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .25s ease, transform .25s ease, background .25s ease;
}
.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
}

.card__title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--text-1);
  margin: 12px 0 10px;
}
.card__body {
  font-size: 14.5px;
  color: var(--text-3);
  line-height: 1.7;
  margin: 0;
}

.card__metric {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 40px;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.card__metric span {
  font-size: 18px;
  color: var(--text-3);
  margin-left: 4px;
  font-weight: 500;
}

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(94,234,212,0.08);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border: 1px solid rgba(94,234,212,0.18);
}

.card__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.card__list li {
  font-size: 13px;
  color: var(--text-2);
  padding: 5px 0;
  position: relative;
  padding-left: 16px;
}
.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.card__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-4);
  margin-bottom: 8px;
}
.card__meta {
  display: flex;
  gap: 16px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

/* ---------- process ---------- */
.process {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}
.process__step {
  padding: 30px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
  position: relative;
  min-height: 200px;
}
.process__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 16px;
}
.process__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 10px;
}
.process__body {
  font-size: 14px;
  color: var(--text-3);
  margin: 0;
  line-height: 1.65;
}
.process__arrow {
  align-self: center;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-4);
  position: relative;
}
.process__arrow::before {
  content: '';
  position: absolute;
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--text-4), transparent);
}
.process__arrow::after {
  content: '';
  width: 7px;
  height: 7px;
  border-top: 1.4px solid var(--accent);
  border-right: 1.4px solid var(--accent);
  transform: rotate(45deg);
  position: relative;
}

/* ---------- solutions / products ---------- */
.products {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.product {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
  transition: border-color .25s ease, transform .25s ease;
}
.product:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.product__visual {
  position: relative;
  height: 280px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(94,234,212,0.12), transparent 70%), var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.product__visual--feri {
  background: radial-gradient(ellipse at center, rgba(56,189,248,0.12), transparent 70%), var(--bg-2);
}
.product__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6), transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6), transparent 70%);
}
.product__grid-bg--soft { opacity: 0.5; }

.product__badge {
  position: absolute;
  top: 18px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--accent);
  padding: 5px 10px;
  background: rgba(6,8,12,0.7);
  border: 1px solid rgba(94,234,212,0.3);
  border-radius: 999px;
}
.product__visual--feri .product__badge {
  color: #38bdf8;
  border-color: rgba(56,189,248,0.3);
}

.product__device {
  position: relative;
  width: 140px;
  height: 180px;
  border-radius: 14px;
  background: linear-gradient(180deg, #1a2230, #0a0d13);
  border: 1px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  padding: 12px;
  box-shadow:
    0 30px 60px -20px rgba(0,0,0,0.8),
    inset 0 1px 0 rgba(255,255,255,0.06);
}
.product__device--lite {
  width: 110px;
  height: 150px;
  border-radius: 18px;
}
.product__device-screen {
  flex: 1;
  background:
    repeating-linear-gradient(180deg, rgba(94,234,212,0.18) 0 2px, transparent 2px 6px),
    #050810;
  border-radius: 6px;
  margin-bottom: 10px;
  position: relative;
  overflow: hidden;
}
.product__device-screen::after {
  content: '';
  position: absolute;
  inset: 20% 10% auto 10%;
  height: 3px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  border-radius: 2px;
  animation: scan 2s infinite linear;
}
.product__visual--feri .product__device-screen::after {
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
}
@keyframes scan {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(120%); }
  51% { opacity: 0; }
  52% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(0); opacity: 1; }
}
.product__device-led {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  align-self: center;
}
.product__device-led--green { background: #38bdf8; box-shadow: 0 0 8px #38bdf8; }

.product__body {
  padding: 30px;
}
.product__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 10px;
}
.product__name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 14px;
  line-height: 1.35;
}
.product__desc {
  color: var(--text-3);
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0 0 22px;
}
.product__feats {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}
.product__feats li {
  font-size: 13.5px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  display: flex;
  gap: 14px;
  align-items: baseline;
}
.product__feats li:last-child { border-bottom: none; }
.product__feat-k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--text-4);
  min-width: 56px;
  flex-shrink: 0;
}

/* ---------- performance ---------- */
.perf {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
}
.perf__item {
  padding: 48px 24px;
  text-align: center;
  border-left: 1px solid var(--line);
  position: relative;
}
.perf__item:first-child { border-left: none; }
.perf__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 5vw, 60px);
  line-height: 1;
  color: var(--text-1);
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff 0%, #5eead4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.perf__value span {
  font-size: 0.4em;
  color: var(--text-3);
  margin-left: 4px;
  font-weight: 500;
  -webkit-text-fill-color: var(--text-3);
}
.perf__label {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* ---------- references ---------- */
.ref-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  padding: 48px;
  margin-bottom: 28px;
  border: 1px solid var(--line);
  isolation: isolate;
}
.ref-banner__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(135deg, rgba(94,234,212,0.18), transparent 50%),
    linear-gradient(0deg, rgba(6,8,12,0.95) 0%, rgba(6,8,12,0.6) 60%, rgba(6,8,12,0.3) 100%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 12px),
    var(--bg-2);
}
.ref-banner__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 30%, rgba(56,189,248,0.18), transparent 60%);
}
.ref-banner__inner { max-width: 720px; }
.ref-banner__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--accent);
  padding: 5px 12px;
  background: rgba(6,8,12,0.6);
  border: 1px solid rgba(94,234,212,0.3);
  border-radius: 999px;
  margin-bottom: 16px;
}
.ref-banner__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.25;
  color: var(--text-1);
  margin: 0 0 12px;
}
.ref-banner__sub {
  color: var(--text-2);
  font-size: 15px;
  margin: 0;
}

.ref-contracts { margin-bottom: 28px; }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.gallery__cell {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  overflow: hidden;
  position: relative;
  background: var(--bg-2);
  transition: transform .25s ease, border-color .25s ease;
}
.gallery__cell:hover {
  transform: scale(1.02);
  border-color: var(--accent);
}
.gallery__art {
  position: absolute;
  inset: 0;
}
.gallery__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 10px 12px;
  background: linear-gradient(0deg, rgba(6,8,12,0.92), transparent);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--text-2);
}

.ip {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: center;
  padding: 40px;
  border: 1px solid rgba(94,234,212,0.25);
  background: linear-gradient(135deg, rgba(94,234,212,0.06), rgba(94,234,212,0.01));
  border-radius: var(--radius-lg);
}
.ip__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(80px, 12vw, 140px);
  line-height: 0.9;
  text-align: center;
  background: linear-gradient(180deg, #fff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}
.ip__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin-bottom: 10px;
}
.ip__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 10px;
}
.ip__desc {
  color: var(--text-3);
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0;
}

/* ---------- before vs after ---------- */
.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  margin-bottom: 60px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare__col {
  padding: 40px;
  background: var(--bg-1);
}
.compare__col--before { background: var(--bg-1); }
.compare__col--after {
  background: linear-gradient(135deg, rgba(94,234,212,0.06), transparent), var(--bg-1);
}
.compare__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--text-4);
  margin-bottom: 16px;
}
.compare__tag--after { color: var(--accent); }
.compare__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 24px;
  line-height: 1.4;
}
.compare__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.compare__col li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--text-2);
}
.compare__col li:last-child { border-bottom: none; }
.compare__col li span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--text-4);
  min-width: 60px;
  flex-shrink: 0;
}
.compare__col--after li span { color: var(--accent); }
.compare__divider {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-2);
  color: var(--accent);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 0 12px;
}

/* ---------- schema ---------- */
.schema {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.schema__item {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
}
.schema__head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin-bottom: 20px;
}
.schema__visual {
  background: radial-gradient(ellipse at center, rgba(94,234,212,0.08), transparent 60%), var(--bg-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  padding: 24px;
  margin-bottom: 18px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.schema__cap {
  margin: 0;
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
}

.proto {
  width: 200px;
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.proto__body {
  position: absolute;
}
.proto__screen {
  width: 160px;
  height: 100px;
  background: #050810;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  box-shadow: 0 20px 50px -20px rgba(0,0,0,0.9);
}
.proto__bar {
  flex: 1;
  height: 60%;
  background: linear-gradient(180deg, var(--accent), rgba(94,234,212,0.2));
  border-radius: 2px;
  animation: barAnim 1.6s infinite ease-in-out;
}
.proto__bar--mid { height: 80%; animation-delay: .2s; }
.proto__bar--low { height: 35%; animation-delay: .4s; }
.proto__bar:nth-child(4) { animation-delay: .6s; }
.proto__bar:nth-child(5) { animation-delay: .8s; height: 70%; }
@keyframes barAnim {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.6); }
}
.proto__legs {
  display: flex;
  gap: 80px;
  margin-top: 12px;
}
.proto__legs span {
  width: 6px;
  height: 22px;
  background: linear-gradient(180deg, #475569, #1e293b);
  border-radius: 2px;
}

/* ---------- CEO ---------- */
.ceo {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: start;
  max-width: 1000px;
  margin: 0 auto;
}
.ceo__profile {
  position: sticky;
  top: 100px;
  text-align: center;
}
.ceo__avatar {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(94,234,212,0.3), transparent 60%),
    linear-gradient(135deg, #1a2230, #0a0d13);
  border: 1px solid rgba(94,234,212,0.3);
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 56px;
  letter-spacing: 0.04em;
  color: var(--accent);
  box-shadow:
    0 30px 80px -30px rgba(94,234,212,0.3),
    inset 0 1px 0 rgba(255,255,255,0.08);
}
.ceo__name { color: var(--text-2); }
.ceo__title { font-size: 18px; font-weight: 700; color: var(--text-1); }
.ceo__role { font-size: 12.5px; color: var(--text-3); margin-top: 4px; letter-spacing: 0.04em; }

.ceo__msg .eyebrow { margin-bottom: 22px; }
.ceo__head {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.4;
  color: var(--text-1);
  margin: 0 0 28px;
  letter-spacing: -0.005em;
}
.ceo__msg p {
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.85;
  margin: 0 0 18px;
}

/* ---------- origin ---------- */
.origins {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.origin {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  align-items: center;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
}
.origin__visual {
  background: radial-gradient(ellipse at center, rgba(94,234,212,0.08), transparent 70%);
  border-radius: var(--radius-sm);
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.origin__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 10px;
}
.origin__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 12px;
  line-height: 1.45;
}
.origin__body p {
  margin: 0;
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.7;
}

/* ---------- vision ---------- */
.vision {
  padding: 160px 0;
  background:
    radial-gradient(ellipse at center, rgba(94,234,212,0.08), transparent 60%),
    linear-gradient(180deg, var(--bg-0), #04060a);
  position: relative;
  overflow: hidden;
}
.vision::before {
  content: '';
  position: absolute;
  inset: 0;
  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: 80px 80px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 70%);
  pointer-events: none;
}
.vision__wrap { text-align: center; position: relative; }
.vision__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 16px auto 28px;
  max-width: 900px;
}
.vision__body {
  max-width: 640px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--text-3);
  line-height: 1.85;
}

/* ---------- CTA / form ---------- */
.cta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.cta__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 16px 0 18px;
}
.cta__sub {
  color: var(--text-3);
  font-size: 15px;
  line-height: 1.75;
  margin: 0 0 28px;
}
.cta__list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}
.cta__list li {
  font-size: 14px;
  color: var(--text-2);
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.cta__list li::before {
  content: '—';
  color: var(--accent);
  font-family: var(--font-mono);
}

.cta__form {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
}
.cta__form-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.field { margin-bottom: 18px; }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 18px;
}
.field-row .field { margin-bottom: 0; }
.field label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--text-2);
  margin-bottom: 8px;
}
.field label span {
  color: var(--accent);
  margin-left: 2px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color .15s ease, background .15s ease;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-4); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  background: rgba(94,234,212,0.04);
}
.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
  border-color: rgba(249,115,22,0.5);
}
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%238893a3' stroke-width='1.4' fill='none' stroke-linecap='square'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  padding-right: 36px;
}
.field textarea {
  resize: vertical;
  min-height: 110px;
  font-family: var(--font-sans);
}

.cta__form-msg {
  min-height: 1.2em;
  margin: 14px 0 0;
  font-size: 13px;
  text-align: center;
  color: var(--text-3);
}
.cta__form-msg.is-ok { color: var(--accent); }
.cta__form-msg.is-err { color: var(--warn); }

.btn[disabled] {
  opacity: 0.6;
  pointer-events: none;
}

/* ---------- footer ---------- */
.footer {
  background: #03050a;
  border-top: 1px solid var(--line);
  padding: 80px 0 24px;
  color: var(--text-3);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 60px;
  margin-bottom: 60px;
}
.brand--footer { margin-bottom: 18px; }
.footer__tag {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-2);
  margin: 0 0 24px;
}
.footer__co {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.8;
  margin: 0;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer__col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__h {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin-bottom: 8px;
}
.footer__col a,
.footer__col span {
  font-size: 13.5px;
  color: var(--text-3);
  transition: color .15s ease;
}
.footer__col a:hover { color: var(--text-1); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-4);
}

/* ---------- reveal on scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s ease, transform .8s ease;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
  .badge__dot, .hero__scroll-line::after, .product__device-screen::after, .proto__bar {
    animation: none !important;
  }
  html { scroll-behavior: auto; }
}

/* =========================================================
   responsive
   ========================================================= */
@media (max-width: 1024px) {
  .nav__menu { gap: 18px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(1), .stat:nth-child(2) { padding-bottom: 18px; }
  .stat:nth-child(3), .stat:nth-child(4) { padding-top: 18px; border-top: 1px solid var(--line); }

  .cards--3 { grid-template-columns: 1fr 1fr; }
  .products { grid-template-columns: 1fr; }
  .origins { grid-template-columns: 1fr; }
  .schema { grid-template-columns: 1fr; }

  .process {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .process__arrow { display: none; }

  .ceo { grid-template-columns: 1fr; gap: 32px; }
  .ceo__profile { position: relative; top: 0; }
  .ceo__avatar { width: 160px; height: 160px; font-size: 42px; }

  .cta { grid-template-columns: 1fr; gap: 40px; }

  .footer__inner { grid-template-columns: 1fr; gap: 40px; }

  .perf { grid-template-columns: repeat(2, 1fr); }
  .perf__item:nth-child(3) { border-left: none; border-top: 1px solid var(--line); }
  .perf__item:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 768px) {
  .nav__menu { display: none; }
  .nav__burger { display: inline-flex; }

  .section { padding: 80px 0; }
  .section__head { margin-bottom: 44px; }

  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 40px); padding-bottom: 60px; }
  .hero__scroll { display: none; }
  .hero__lead { font-size: 14.5px; }

  .cards--3, .cards--2 { grid-template-columns: 1fr; }

  .process { grid-template-columns: 1fr; }

  .gallery { grid-template-columns: repeat(2, 1fr); }

  .ip {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 30px;
    text-align: center;
  }

  .compare {
    grid-template-columns: 1fr;
  }
  .compare__divider {
    transform: rotate(90deg);
    padding: 12px 0;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .origin {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px;
  }
  .origin__visual { max-width: 200px; margin: 0 auto; }

  .cta__form, .schema__item { padding: 24px; }
  .field-row { grid-template-columns: 1fr; gap: 18px; }

  .ref-banner { padding: 30px; min-height: 240px; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .nav__inner { padding: 0 18px; }
  .hero__stats { grid-template-columns: 1fr 1fr; gap: 14px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .perf { grid-template-columns: 1fr; }
  .perf__item { border-left: none; border-top: 1px solid var(--line); padding: 32px 20px; }
  .perf__item:first-child { border-top: none; }
  .gallery { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr; }
}