/* ═══════════════════════════════════════════════════════════════
   NooEra Energy — Design System
   Art Direction: Dark industrial, electric cyan/teal accent, 
   high-contrast authority, precision engineering aesthetic
   ═══════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* ─── Light Mode ─── */
:root, [data-theme="light"] {
  --color-bg:               #f0f2f5;
  --color-surface:          #ffffff;
  --color-surface-2:        #f8f9fb;
  --color-surface-offset:   #e8ebf0;
  --color-surface-offset-2: #e0e4ea;
  --color-surface-dynamic:  #d8dde6;
  --color-divider:          #cdd3dd;
  --color-border:           #c0c8d6;

  --color-text:             #0d1117;
  --color-text-muted:       #5a6478;
  --color-text-faint:       #9ba3b2;
  --color-text-inverse:     #f0f2f5;

  /* Electric Cyan — primary accent */
  --color-primary:          #0090a8;
  --color-primary-hover:    #007890;
  --color-primary-active:   #006078;
  --color-primary-highlight:#c8eaef;

  /* Electric Orange — secondary accent */
  --color-accent2:          #e87820;
  --color-accent2-hover:    #d06210;
  --color-accent2-active:   #b85500;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
  --shadow-glow: 0 0 30px rgba(0, 144, 168, 0.20);
}

/* ─── Dark Mode ─── */
[data-theme="dark"],
@media (prefers-color-scheme: dark) { :root:not([data-theme]) {
  --color-bg:               #08090c;
  --color-surface:          #0d0f14;
  --color-surface-2:        #121520;
  --color-surface-offset:   #161a24;
  --color-surface-offset-2: #1a1f2c;
  --color-surface-dynamic:  #1f2535;
  --color-divider:          #1f2535;
  --color-border:           #2a3145;

  --color-text:             #e8ecf4;
  --color-text-muted:       #7a8499;
  --color-text-faint:       #3d4558;
  --color-text-inverse:     #08090c;

  --color-primary:          #00d4ff;
  --color-primary-hover:    #00b8e0;
  --color-primary-active:   #009dc0;
  --color-primary-highlight:#0d2535;

  --color-accent2:          #ff9a3c;
  --color-accent2-hover:    #e8851e;
  --color-accent2-active:   #cc7010;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
}}

[data-theme="dark"] {
  --color-bg:               #08090c;
  --color-surface:          #0d0f14;
  --color-surface-2:        #121520;
  --color-surface-offset:   #161a24;
  --color-surface-offset-2: #1a1f2c;
  --color-surface-dynamic:  #1f2535;
  --color-divider:          #1f2535;
  --color-border:           #2a3145;
  --color-text:             #e8ecf4;
  --color-text-muted:       #7a8499;
  --color-text-faint:       #3d4558;
  --color-text-inverse:     #08090c;
  --color-primary:          #00d4ff;
  --color-primary-hover:    #00b8e0;
  --color-primary-active:   #009dc0;
  --color-primary-highlight:#0d2535;
  --color-accent2:          #ff9a3c;
  --color-accent2-hover:    #e8851e;
  --color-accent2-active:   #cc7010;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li, figcaption { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; }

::selection { background: color-mix(in oklab, var(--color-primary), transparent 75%); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a, button, [role="button"] {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  border: none;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { color: var(--color-text); border-color: var(--color-text-muted); }

.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }
.btn-full { width: 100%; justify-content: center; }

.icon-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.icon-btn:hover { background: var(--color-surface-offset); color: var(--color-text); }

/* ─── Badge / Eyebrow ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: color-mix(in oklab, var(--color-primary), transparent 88%);
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary), transparent 70%);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

/* ─── Gradient Text ─── */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), #4de8ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Fade-in Scroll Animation ─── */
.fade-in { opacity: 1; }

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 60%;
  }
  @keyframes reveal-fade { to { opacity: 1; } }
}

/* ═══════════════════════════════ HEADER ═══════════════════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg), transparent 10%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s var(--ease-out);
}

.header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo { display: flex; align-items: center; gap: var(--space-2); text-decoration: none; color: var(--color-text); flex-shrink: 0; }

.logo-wordmark {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.logo-wordmark strong { font-weight: 800; }
.logo-energy { color: var(--color-text-muted); font-weight: 400; }

.nav {
  display: flex;
  gap: var(--space-1);
  margin-left: auto;
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}
.nav-link:hover { color: var(--color-text); background: var(--color-surface-offset); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.menu-btn { display: none; }

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.mobile-nav-link {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
}
.mobile-nav-link:hover { color: var(--color-text); background: var(--color-surface-offset); }
.mobile-nav.open { display: flex; }

@media (max-width: 768px) {
  .nav { display: none; }
  .header-actions .btn { display: none; }
  .menu-btn { display: flex; }
}

/* ═══════════════════════════════ HERO ═══════════════════════════════ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Grid overlay */
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
}

/* Ambient glow rings */
.energy-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  opacity: 0.06;
  animation: pulse-ring 8s ease-in-out infinite;
}
.ring-1 { width: 600px; height: 600px; right: -100px; top: -100px; animation-delay: 0s; }
.ring-2 { width: 900px; height: 900px; right: -250px; top: -250px; opacity: 0.04; animation-delay: 2s; }
.ring-3 { width: 1200px; height: 1200px; right: -400px; top: -400px; opacity: 0.025; animation-delay: 4s; }

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.06; }
  50% { transform: scale(1.04); opacity: 0.1; }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--content-wide);
  position: relative;
  z-index: 2;
}

.hero-eyebrow { margin-bottom: var(--space-2); }

.hero-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 10ch;
}

.hero-subhead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4);
}

.stat { display: flex; flex-direction: column; gap: var(--space-1); }

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-unit { font-size: 0.7em; color: var(--color-primary); }
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 500; }

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* Hero diagram */
.hero-diagram {
  position: absolute;
  right: clamp(-100px, -5vw, 0px);
  top: 50%;
  transform: translateY(-50%);
  width: clamp(300px, 40vw, 520px);
  opacity: 0.55;
  z-index: 1;
}

.microgrid-svg { width: 100%; height: auto; }

@media (max-width: 900px) {
  .hero-diagram { display: none; }
  .hero-heading { max-width: none; }
}

/* ═══════════════════════════════ TRUST BAR ═══════════════════════════════ */
.trust-bar {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding-block: var(--space-6);
}

.trust-bar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
}

.trust-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  white-space: nowrap;
  flex-shrink: 0;
}

.trust-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.trust-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

/* ═══════════════════════════════ SECTIONS ═══════════════════════════════ */
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section--alt { background: var(--color-surface); }

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(var(--space-12), 5vw, var(--space-20));
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ═══════════════════════════════ TECH GRID ═══════════════════════════════ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .tech-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
  }
  .tech-card--large {
    grid-column: span 2;
    grid-row: span 1;
  }
}

.tech-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.tech-card:hover {
  border-color: color-mix(in oklab, var(--color-primary), transparent 50%);
  box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in oklab, var(--color-primary), transparent 80%);
  transform: translateY(-2px);
}

.tech-card--large .tech-card-visual {
  width: 100%;
  aspect-ratio: 2.5/1;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  margin-bottom: var(--space-2);
}

.tech-svg { width: 100%; height: 100%; }

.tech-icon-wrap {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in oklab, var(--color-primary), transparent 90%);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.tech-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.tech-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ═══════════════════════════════ MODES GRID ═══════════════════════════════ */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.mode-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

.mode-card--featured {
  border-color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary), var(--color-bg) 95%);
  box-shadow: var(--shadow-glow);
}

.mode-badge {
  display: inline-flex;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.mode-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-bottom: var(--space-4);
  position: relative;
}
.mode-indicator::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  animation: mode-pulse 2.5s ease-in-out infinite;
}
.mode-indicator--grid { background: var(--color-text-faint); }
.mode-indicator--grid::after { background: color-mix(in oklab, var(--color-text-faint), transparent 80%); }
.mode-indicator--island { background: var(--color-primary); }
.mode-indicator--island::after { background: color-mix(in oklab, var(--color-primary), transparent 70%); }
.mode-indicator--hybrid { background: var(--color-accent2); }
.mode-indicator--hybrid::after { background: color-mix(in oklab, var(--color-accent2), transparent 75%); }

@keyframes mode-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(2.5); opacity: 0; }
}

.mode-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.mode-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-5);
}

.mode-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mode-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
}
.mode-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.7;
}
.mode-card--featured .mode-list li::before { opacity: 1; }

/* ═══════════════════════════════ BENEFITS ═══════════════════════════════ */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8) var(--space-10);
}

.benefit-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-primary), transparent 90%);
  color: var(--color-primary);
  flex-shrink: 0;
}

.benefit-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.benefit-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ═══════════════════════════════ PROCESS ═══════════════════════════════ */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-6);
  align-items: start;
  padding: var(--space-8) 0;
}

.process-connector {
  width: 2px;
  height: var(--space-8);
  background: linear-gradient(var(--color-primary), var(--color-border));
  margin-left: calc(32px - 1px);
  opacity: 0.4;
}

.step-num {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-primary), transparent 88%);
  border: 1px solid color-mix(in oklab, var(--color-primary), transparent 70%);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--color-primary);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  padding-top: var(--space-3);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
}

/* ═══════════════════════════════ CONTACT ═══════════════════════════════ */
.contact-section {
  background: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: start;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-5);
}

.contact-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Form */
.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-8), 4vw, var(--space-10));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form-input::placeholder { color: var(--color-text-faint); }
.form-input:focus { 
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary), transparent 80%);
}

.form-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a8499' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }

.form-textarea { resize: vertical; min-height: 100px; }

.form-success {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: color-mix(in oklab, var(--color-primary), transparent 90%);
  border: 1px solid color-mix(in oklab, var(--color-primary), transparent 60%);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
}
.form-success[hidden] { display: none; }

/* ═══════════════════════════════ FOOTER ═══════════════════════════════ */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-10);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-8);
  justify-content: space-between;
}

.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-links a:hover { color: var(--color-text); }

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-align: right;
}

.footer-legal p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.pplx-credit {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}
.pplx-credit:hover { color: var(--color-primary); }

@media (max-width: 600px) {
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-legal { text-align: left; }
}