/* ============================================
207 ANALYTIX — Crafted UI
Linear × Vercel × Stripe
============================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ---- THEME TOKENS ---- */

:root {
  --font-sans: 'Instrument Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --accent: #2563EB;
  --accent-hover: #1d4ed8;
  --accent-muted: rgba(37, 99, 235, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-h: 64px;
}

/* Light (explicit) */
[data-theme="light"] {
  color-scheme: light;
  --bg: #FAFAFA;
  --bg-elevated: #FFFFFF;
  --bg-subtle: #F4F4F5;
  --bg-inset: #ECECEF;
  --text: #09090B;
  --text-secondary: #52525B;
  --text-tertiary: #A1A1AA;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 0 0 1px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
  --shadow-lg: 0 24px 80px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
  --header-bg: rgba(250, 250, 250, 0.72);
  --hero-gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 50%, #2563EB 100%);
  --aurora-1: rgba(37, 99, 235, 0.08);
  --aurora-2: rgba(124, 58, 237, 0.06);
  --grain-opacity: 0.025;
  --preview-bg: #FFFFFF;
  --preview-chrome: #F4F4F5;
  --selection-bg: rgba(37, 99, 235, 0.2);
  --selection-text: #09090B;
}

/* Dark (explicit) */
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #09090B;
  --bg-elevated: #111113;
  --bg-subtle: #18181B;
  --bg-inset: #0C0C0E;
  --text: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-tertiary: #52525B;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.06);
  --shadow-md: 0 8px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06);
  --shadow-lg: 0 32px 80px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.06);
  --header-bg: rgba(9, 9, 11, 0.72);
  --hero-gradient: linear-gradient(135deg, #60A5FA 0%, #A78BFA 45%, #38BDF8 100%);
  --aurora-1: rgba(37, 99, 235, 0.15);
  --aurora-2: rgba(124, 58, 237, 0.1);
  --grain-opacity: 0.04;
  --preview-bg: #111113;
  --preview-chrome: #18181B;
  --selection-bg: rgba(37, 99, 235, 0.35);
  --selection-text: #FAFAFA;
}

/* System — light */
@media (prefers-color-scheme: light) {
  [data-theme="system"] {
    color-scheme: light;
    --bg: #FAFAFA;
    --bg-elevated: #FFFFFF;
    --bg-subtle: #F4F4F5;
    --bg-inset: #ECECEF;
    --text: #09090B;
    --text-secondary: #52525B;
    --text-tertiary: #A1A1AA;
    --border: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.14);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 0 0 1px rgba(0,0,0,0.04);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
    --shadow-lg: 0 24px 80px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
    --header-bg: rgba(250, 250, 250, 0.72);
    --hero-gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 50%, #2563EB 100%);
    --aurora-1: rgba(37, 99, 235, 0.08);
    --aurora-2: rgba(124, 58, 237, 0.06);
    --grain-opacity: 0.025;
    --preview-bg: #FFFFFF;
    --preview-chrome: #F4F4F5;
    --selection-bg: rgba(37, 99, 235, 0.2);
    --selection-text: #09090B;
  }
}

/* System — dark */
@media (prefers-color-scheme: dark) {
  [data-theme="system"] {
    color-scheme: dark;
    --bg: #09090B;
    --bg-elevated: #111113;
    --bg-subtle: #18181B;
    --bg-inset: #0C0C0E;
    --text: #FAFAFA;
    --text-secondary: #A1A1AA;
    --text-tertiary: #52525B;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.06);
    --shadow-md: 0 8px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06);
    --shadow-lg: 0 32px 80px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.06);
    --header-bg: rgba(9, 9, 11, 0.72);
    --hero-gradient: linear-gradient(135deg, #60A5FA 0%, #A78BFA 45%, #38BDF8 100%);
    --aurora-1: rgba(37, 99, 235, 0.15);
    --aurora-2: rgba(124, 58, 237, 0.1);
    --grain-opacity: 0.04;
    --preview-bg: #111113;
    --preview-chrome: #18181B;
    --selection-bg: rgba(37, 99, 235, 0.35);
    --selection-text: #FAFAFA;
  }
}

/* ---- BASE ---- */

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background 0.35s var(--ease-out), color 0.35s var(--ease-out);
}

body.nav-open { overflow: hidden; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 128px;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

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

/* ---- HEADER ---- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 16px 0;
}

.header__shell {
  max-width: 720px;
  margin: 0 auto;
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 100px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s var(--ease-out), border-color 0.3s;
}

.header.scrolled .header__shell {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 8px 0 16px;
  gap: 12px;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.logo-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--accent);
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1) inset;
}

.logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.logo {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  white-space: nowrap;
}

.logo > span { color: var(--accent); }

.logo__tagline {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  text-transform: lowercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 100px;
  transition: color 0.2s, background 0.2s;
}

.nav__link:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

.nav__link--cta {
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
}

.nav__link--cta:hover {
  border-color: var(--border-strong);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 100px;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.hamburger[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: calc(var(--header-h) + 8px);
  left: 16px;
  right: 16px;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 99;
}

.mobile-nav.open { display: flex; }

.mobile-nav .nav__link {
  font-size: 0.9375rem;
  padding: 12px 16px;
  border-radius: var(--radius-md);
}

@media (max-width: 720px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .header__shell { max-width: none; border-radius: var(--radius-lg); }
}

/* ---- BUTTONS ---- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s, background 0.2s, border-color 0.2s;
  border: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  opacity: 0.92;
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 10px 18px;
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--bg-subtle);
}

.btn--lg {
  padding: 14px 24px;
  font-size: 0.9375rem;
}

/* ---- HERO ---- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 80px;
  overflow: hidden;
}

.hero__aurora {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, var(--aurora-1), transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 20%, var(--aurora-2), transparent 55%),
    radial-gradient(ellipse 50% 30% at 10% 60%, var(--aurora-1), transparent 50%);
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero__layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero__panel { order: -1; }
}

.hero__layout--single {
  grid-template-columns: 1fr;
  max-width: 720px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22C55E;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
  animation: pulse 2.5s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__headline {
  font-size: clamp(2.75rem, 6.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.045em;
  margin-bottom: 20px;
}

.hero__em {
  font-style: normal;
  background: var(--hero-gradient);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 8s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.hero__sub {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---- PREVIEW CARD ---- */

.hero__panel {
  display: flex;
  justify-content: flex-end;
}

.preview-card {
  width: 100%;
  max-width: 360px;
  background: var(--preview-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.preview-card__chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--preview-chrome);
  border-bottom: 1px solid var(--border);
}

.preview-card__chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}

.preview-card__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.preview-stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.preview-stat__label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.preview-stat__value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
}

.preview-bar-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.preview-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
}

.preview-bar span {
  width: 110px;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.preview-bar::after {
  content: '';
  flex: 1;
  height: 6px;
  background: var(--bg-inset);
  border-radius: 100px;
  position: relative;
  overflow: hidden;
}

.preview-bar b {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  min-width: 32px;
  text-align: right;
}

.preview-bar::after {
  background: linear-gradient(90deg, var(--accent) var(--w, 50%), var(--bg-inset) var(--w, 50%));
}

.preview-caption {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-tertiary);
  text-align: right;
}

/* ---- SECTIONS ---- */

.section {
  padding: 96px 0;
}

.section--tinted {
  background: var(--bg-subtle);
}

.section__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section__lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 600px;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

.section__cta {
  margin-top: 40px;
  text-align: center;
}

/* ---- ABOUT GRID ---- */

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.about-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.about-card__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-muted);
  border-radius: var(--radius-sm);
  color: var(--accent);
  margin-bottom: 14px;
}

.about-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.about-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- PRODUCT GRID ---- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 620px) {
  .product-grid { grid-template-columns: 1fr; }
}

.product-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.product-card--full {
  grid-column: 1 / -1;
}

.product-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.product-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.product-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

.product-badge--soon {
  background: var(--accent-muted);
  color: var(--accent);
}

.product-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.product-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.product__link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  margin-top: 8px;
  display: inline-block;
  transition: opacity 0.2s;
}

.product__link:hover { opacity: 0.7; }

.product__link--soon {
  opacity: 0.4;
  cursor: default;
}

/* ---- FRAMEWORK STEPS ---- */

.framework-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.framework-step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.framework-step:last-child { border-bottom: none; }

.framework-step__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  padding-top: 3px;
  min-width: 24px;
}

.framework-step h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.framework-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ---- MODULE CARDS ---- */

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 620px) {
  .module-grid { grid-template-columns: 1fr; }
}

.module-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.module-card__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.module-card__name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.module-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.module-card__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.module-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 100px;
}

/* ---- APPROACH GRID ---- */

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 720px) {
  .approach-grid { grid-template-columns: 1fr; }
}

.approach-card {
  padding: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.approach-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.approach-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- CONTACT ---- */

.contact__card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 56px;
  overflow: hidden;
}

@media (max-width: 600px) {
  .contact__card { padding: 32px 24px; }
}

.contact__glow {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, var(--aurora-1), transparent 70%);
  pointer-events: none;
}

.contact__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
}

.contact__sub {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 36px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 560px;
}

.contact-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select {
  appearance: none;
  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 1L6 7L11 1' stroke='%23A1A1AA' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-error {
  font-size: 0.75rem;
  color: #EF4444;
  display: none;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: #EF4444;
}

.form-group.has-error .form-error { display: block; }

.form-submit {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.form-submit .btn {
  padding: 12px 24px;
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.form-success {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--text);
}

.form-success.visible { display: flex; }

.form-success__icon {
  width: 20px;
  height: 20px;
  background: #22C55E;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
}

/* ---- FOOTER ---- */

.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer__link {
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: 0.8125rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.footer__link:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

/* ---- THEME BAR ---- */

.theme-bar {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
}

.theme-bar__btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-tertiary);
  background: transparent;
  border: none;
  padding: 5px 10px;
  border-radius: 100px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.02em;
}

.theme-bar__btn:hover { color: var(--text); }

.theme-bar__btn--active {
  background: var(--bg-elevated);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* ---- ALEXANDRIA PAGE ---- */

.alex-hero {
  padding: calc(var(--header-h) + 64px) 0 80px;
  position: relative;
  overflow: hidden;
}

.alex-hero__aurora {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 60% at 60% 0%, var(--aurora-2), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 50%, var(--aurora-1), transparent 50%);
}

.alex-hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.alex-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.alex-hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.alex-hero__sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 520px;
  margin-bottom: 32px;
}

.alex-products {
  padding: 80px 0;
}

.alex-product-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.alex-product-block:first-child { border-top: none; }

@media (max-width: 720px) {
  .alex-product-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.alex-product__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.alex-product__name {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.alex-product__desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.alex-product__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.alex-product__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.alex-product__features li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
  flex-shrink: 0;
}

.alex-product__visual {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.alex-product__visual-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.visual-chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.visual-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.visual-msg--in {
  background: var(--bg-inset);
  color: var(--text-secondary);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.visual-msg--out {
  background: var(--accent);
  color: white;
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}

.visual-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.visual-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
}

.visual-item span {
  color: var(--text-secondary);
}

.visual-item b {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
}

.alex-how {
  padding: 80px 0;
  background: var(--bg-subtle);
}

.alex-how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

@media (max-width: 700px) {
  .alex-how__steps { grid-template-columns: 1fr; }
}

.alex-step {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.alex-step__num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.alex-step h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.alex-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.alex-contact {
  padding: 96px 0;
}