/* =========================================================
   Ingena Labs — Design Tokens
   ========================================================= */
:root {
  /* Color */
  --bg-primary: #05070d;
  --bg-elevated: #0b0f1a;
  --bg-elevated-2: #10141f;
  --bg-elevated-3: #141a29;

  --text-primary: #f4f6fb;
  --text-secondary: #9aa4b8;
  --text-tertiary: #6b7589;

  --accent-blue: #2f6bff;
  --accent-blue-bright: #4d84ff;
  --accent-cyan: #27bdff;
  --accent-gradient: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);

  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);

  /* Typography */
  --font-heading: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Layout */
  --content-width: 1180px;
  --content-width-narrow: 760px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  /* Motion */
  --ease-standard: cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration-fast: 180ms;
  --duration-base: 320ms;
  --duration-slow: 600ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text-primary);
}

p { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--accent-blue);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

/* =========================================================
   Layout helpers
   ========================================================= */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--space-sm);
}

.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-gradient);
  flex-shrink: 0;
}

.eyebrow-index {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform var(--duration-fast) var(--ease-standard),
              background var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}

.btn-primary {
  background: var(--text-primary);
  color: #05070d;
}
.btn-primary:hover {
  background: var(--accent-cyan);
  transform: translateY(-1px);
}

.btn-secondary {
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  background: transparent;
}
.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--text-secondary);
  padding: 0.6rem 0;
  position: relative;
}
.btn-ghost::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  height: 1px;
  width: 0;
  background: var(--accent-cyan);
  transition: width var(--duration-base) var(--ease-standard);
}
.btn-ghost:hover {
  color: var(--text-primary);
}
.btn-ghost:hover::after { width: 100%; }

.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform var(--duration-base) var(--ease-standard);
}
.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* =========================================================
   Navigation
   ========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard),
              padding var(--duration-base) var(--ease-standard);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(5, 7, 13, 0.82);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border-subtle);
  padding: 0.7rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand-mark img { width: 100%; height: 100%; }

.brand-name { letter-spacing: -0.01em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  padding: 0.3rem 0;
  transition: color var(--duration-fast) var(--ease-standard);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--accent-cyan);
  transition: width var(--duration-base) var(--ease-standard);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-primary);
}
.nav-link:hover::after { width: 100%; }

.nav-link[aria-current="true"] {
  color: var(--text-primary);
}
.nav-link[aria-current="true"]::after { width: 100%; }

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 12px;
}
.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--duration-base) var(--ease-standard),
              opacity var(--duration-base) var(--ease-standard);
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle-bars span:nth-child(3) { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.mobile-nav {
  display: none;
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 7rem;
  padding-bottom: var(--space-2xl);
  overflow: hidden;
}

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

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 30%, black 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 60% 30%, black 10%, transparent 70%);
  opacity: 0.5;
}

.hero-glow {
  position: absolute;
  width: 60vw;
  max-width: 900px;
  height: 60vw;
  max-height: 900px;
  right: -10%;
  top: -10%;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.22) 0%, rgba(39, 189, 255, 0.08) 45%, transparent 72%);
  filter: blur(10px);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-copy .section-label { margin-bottom: var(--space-md); }

.hero-headline {
  font-size: clamp(2.5rem, 5.2vw, 4.2rem);
  letter-spacing: -0.02em;
}

.hero-headline .accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-top: var(--space-md);
  max-width: 540px;
  font-size: clamp(1.05rem, 1.3vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.65;
}

.hero-actions {
  margin-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-meta {
  margin-top: var(--space-xl);
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.hero-meta-value {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
}

.hero-meta-label {
  font-size: 0.82rem;
  color: var(--text-tertiary);
}

/* Hero visual — art-directed composition built from the logo symbol */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual-frame {
  position: relative;
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1 / 1;
}

.hero-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
}

.hero-ring--outer {
  inset: -8%;
  border-style: dashed;
  border-color: rgba(148, 163, 184, 0.1);
}

.hero-ring--inner {
  inset: 16%;
  border-color: var(--border-strong);
}

.hero-orbit-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 16px 2px rgba(39, 189, 255, 0.7);
  top: -4px;
  left: 50%;
  transform-origin: center 230px;
}

.hero-symbol-wrap {
  position: absolute;
  inset: 22%;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 20px 60px rgba(47, 107, 255, 0.35));
}

.hero-symbol-wrap img {
  width: 100%;
  height: 100%;
}

.hero-plane {
  position: absolute;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: linear-gradient(160deg, rgba(47, 107, 255, 0.12), rgba(10, 14, 24, 0.6));
  backdrop-filter: blur(6px);
}

.hero-plane--a {
  width: 34%;
  height: 22%;
  top: 4%;
  left: -10%;
  transform: rotate(-8deg);
}

.hero-plane--b {
  width: 28%;
  height: 28%;
  bottom: -6%;
  right: -8%;
  transform: rotate(10deg);
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--accent-cyan), transparent);
}

/* =========================================================
   Editorial intro (Company intro)
   ========================================================= */
.intro-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-2xl);
  align-items: start;
}

.intro-heading {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  position: sticky;
  top: 8rem;
}

.intro-body p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.intro-body p:last-child { margin-bottom: 0; }

.intro-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.intro-divider {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.intro-fact-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.4rem;
}

.intro-fact-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* =========================================================
   Pillars (What We Build)
   ========================================================= */
.pillars-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.pillars-head h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  max-width: 560px;
}

.pillars-head p {
  max-width: 380px;
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.6;
}

.pillars-list {
  display: flex;
  flex-direction: column;
}

.pillar {
  display: grid;
  grid-template-columns: 110px 1fr 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
  align-items: start;
}

.pillar:last-child { border-bottom: 1px solid var(--border-subtle); }

.pillar-index {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-tertiary);
  padding-top: 0.3rem;
}

.pillar-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--accent-cyan);
}

.pillar-icon svg { width: 22px; height: 22px; }

.pillar-title {
  font-size: 1.4rem;
  margin-bottom: var(--space-sm);
}

.pillar-text {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 480px;
}

/* =========================================================
   Products
   ========================================================= */
.products-head {
  margin-bottom: var(--space-2xl);
}

.products-head h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  max-width: 620px;
}

.product-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--bg-elevated), var(--bg-primary));
}

.product-feature-visual {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background:
    radial-gradient(circle at 30% 20%, rgba(47, 107, 255, 0.25), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(39, 189, 255, 0.18), transparent 50%),
    var(--bg-elevated-2);
  border-right: 1px solid var(--border-subtle);
}

.product-wordmark {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.1;
}

.product-wordmark span {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--space-sm);
}

.product-feature-body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-category {
  display: inline-flex;
  align-self: flex-start;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: var(--space-md);
}

.product-feature-body h3 {
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  margin-bottom: var(--space-md);
}

.product-feature-body p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
  width: fit-content;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border-strong);
  transition: border-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard),
              gap var(--duration-base) var(--ease-standard);
}
.product-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  gap: 0.9rem;
}
.product-link svg { width: 16px; height: 16px; }

.products-more {
  margin-top: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  color: var(--text-tertiary);
}

.products-more-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.products-more-icon svg { width: 18px; height: 18px; }

.products-more p {
  font-size: 0.98rem;
  line-height: 1.6;
}

.products-more strong {
  color: var(--text-secondary);
  font-weight: 600;
}

/* =========================================================
   Philosophy / Vision
   ========================================================= */
.vision {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.vision-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.vision-heading {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  max-width: 820px;
}

.vision-heading .accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.vision-text {
  margin-top: var(--space-lg);
  max-width: 640px;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.vision-marks {
  margin-top: var(--space-xl);
  display: flex;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}

.vision-mark {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-width: 220px;
}

.vision-mark-num {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-primary);
}

.vision-mark-text {
  font-size: 0.92rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* =========================================================
   Contact
   ========================================================= */
.contact-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-2xl);
  align-items: center;
}

.contact-heading {
  font-size: clamp(2rem, 3.6vw, 3rem);
}

.contact-text {
  margin-top: var(--space-md);
  max-width: 480px;
  color: var(--text-secondary);
  font-size: 1.08rem;
  line-height: 1.7;
}

.contact-actions {
  margin-top: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.contact-card {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  background: linear-gradient(160deg, var(--bg-elevated), var(--bg-primary));
}

.contact-card-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border-subtle);
}

.contact-card-row:first-child {
  border-top: none;
  padding-top: 0;
}

.contact-card-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-cyan);
}
.contact-card-icon svg { width: 18px; height: 18px; }

.contact-card-label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.25rem;
}

.contact-card-value {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-card-value a:hover {
  color: var(--accent-cyan);
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.7fr 0.9fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer-brand .brand { margin-bottom: var(--space-md); }

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-md);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--duration-fast) var(--ease-standard);
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: 0.86rem;
}

.footer-note {
  color: var(--text-tertiary);
  font-size: 0.86rem;
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
}

/* =========================================================
   Scroll reveal
   ========================================================= */
/* Reveal is a progressive enhancement: content is fully visible by default
   (works with JS disabled / no-op), and only animates in when main.js adds
   .js-reveal-ready to <html> and IntersectionObserver confirms support. */
.js-reveal-ready .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}
.js-reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--space-xl); }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
  .hero-visual-frame { max-width: 320px; }
  .intro-grid { grid-template-columns: 1fr; }
  .intro-heading { position: static; margin-bottom: var(--space-md); }
  .pillar { grid-template-columns: 70px 1fr; }
  .pillar-title, .pillar-text { grid-column: 2; }
  .product-feature { grid-template-columns: 1fr; }
  .product-feature-visual { border-right: none; border-bottom: 1px solid var(--border-subtle); min-height: 280px; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1.3fr 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta .btn-secondary { display: none; }

  .mobile-nav {
    position: fixed;
    inset: 0;
    top: 0;
    z-index: 99;
    background: rgba(5, 7, 13, 0.98);
    backdrop-filter: blur(20px);
    padding: 6rem var(--space-md) var(--space-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transform: translateY(-100%);
    transition: transform var(--duration-slow) var(--ease-standard);
  }
  .mobile-nav.is-open { transform: translateY(0); }

  .mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
  }

  .mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-nav-footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
  }

  .vision-marks { gap: var(--space-lg); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}

@media (max-width: 640px) {
  :root {
    --space-2xl: 4rem;
    --space-3xl: 5rem;
  }

  .container { padding: 0 var(--space-sm); }

  .hero { padding-top: 6rem; min-height: auto; }
  .hero-headline { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .hero-meta { gap: var(--space-lg); }
  .hero-actions .btn { width: 100%; }
  .hero-actions { flex-direction: column; }

  .intro-divider { grid-template-columns: 1fr; gap: var(--space-md); }

  .pillar { grid-template-columns: 1fr; gap: var(--space-sm); }
  .pillar-index { padding-top: 0; }

  .product-feature-body, .product-feature-visual { padding: var(--space-lg); }

  .vision-marks { flex-direction: column; gap: var(--space-md); }

  .contact-actions .btn { width: 100%; }
  .contact-actions { flex-direction: column; }

  .footer-top { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}