/* ============================================================
   EnscureX — The Sovereign Interface
   Design System: Light-mode editorial, Manrope + Inter
   Philosophy: No borders. Surface layering. Breathing room.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=Inter:ital,wght@0,400;0,500;0,600;0,700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* ── Surface Hierarchy ── */
  --surface: #f8fafc;
  --surface-low: #f1f5f9;
  --surface-high: #e2e8f0;
  --surface-card: #ffffff;
  --surface-void: #0f172a;

  /* ── Brand Colors (EnscureX Blue) ── */
  --primary: #3563e9;
  --primary-hover: #2850c8;
  --primary-light: #6b8df5;
  --primary-faint: rgba(53, 99, 233, 0.08);
  --primary-glow: rgba(53, 99, 233, 0.12);
  --on-primary: #ffffff;

  /* ── Semantic Colors ── */
  --success: #16a34a;
  --success-light: #dcfce7;
  --error: #dc2626;
  --error-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --info: #2563eb;

  /* ── Text ── */
  --on-surface: #0f172a;
  --on-surface-variant: #475569;
  --outline-variant: #cbd5e1;
  --accent-amber: #d97706;

  /* ── Typography ── */
  --font-display: 'Manrope', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --text-display-lg: clamp(2.75rem, 5vw, 3.5rem);
  --text-display: clamp(2.25rem, 4vw, 3rem);
  --text-headline: clamp(1.75rem, 3vw, 2.25rem);
  --text-headline-sm: 1.5rem;
  --text-title: 1.125rem;
  --text-title-sm: 1rem;
  --text-body: 0.9375rem;
  --text-body-sm: 0.875rem;
  --text-label: 0.75rem;

  /* ── Spacing ── */
  --section-pad: clamp(4.5rem, 9vw, 7rem);
  --container: 1200px;
  --container-tight: 860px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-ambient: 0px 16px 40px rgba(15, 23, 42, 0.06);
  --shadow-soft: 0px 4px 16px rgba(15, 23, 42, 0.04);
  --shadow-primary: 0 0 40px rgba(53, 99, 233, 0.1);

  /* ── Motion ── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--on-surface);
  background: var(--surface);
  overflow-x: hidden;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

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

::selection {
  background: var(--primary-light);
  color: var(--primary);
}

/* ── Layout ── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.container--tight { max-width: var(--container-tight); }

.section {
  padding: var(--section-pad) 0;
  position: relative;
  background: var(--surface);
}

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

.section--dark {
  background: var(--surface-void);
  color: var(--on-primary);
}

.section--dark .text-body-lg,
.section--dark .on-surface-variant { color: rgba(255,255,255,0.7); }

/* ── Typography ── */
.text-hero {
  font-family: var(--font-display);
  font-size: var(--text-display-lg);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--on-surface);
}

.text-h1 {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.text-h2 {
  font-family: var(--font-display);
  font-size: var(--text-headline);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.text-h3 {
  font-family: var(--font-display);
  font-size: var(--text-headline-sm);
  font-weight: 600;
  line-height: 1.3;
}

.text-body-lg {
  font-size: var(--text-title);
  line-height: 1.75;
  color: var(--on-surface-variant);
}

.text-small { font-size: var(--text-body-sm); }
.text-xs { font-size: var(--text-label); }
.text-mono { font-family: var(--font-mono); }
.text-muted { color: var(--on-surface-variant); opacity: 0.6; }
.text-secondary { color: var(--on-surface-variant); }
.text-primary { color: var(--primary); }
.text-center { text-align: center; }

/* ── Section Headers ── */
.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 3.5rem;
}

.section-header .text-h2 { margin-bottom: 0.875rem; }
.section-header .text-body-lg { max-width: 600px; margin: 0 auto; }

/* ── Buttons (Sovereign style) ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.625rem;
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.005em;
}

.btn--primary {
  background: linear-gradient(180deg, var(--primary-light), var(--primary));
  color: var(--on-primary);
  box-shadow: 0 2px 8px rgba(53, 99, 233, 0.25);
}

.btn--primary:hover {
  background: linear-gradient(180deg, var(--primary), var(--primary-hover));
  box-shadow: 0 4px 16px rgba(53, 99, 233, 0.35);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--primary-faint);
  color: var(--primary);
}

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

.btn--ghost {
  background: transparent;
  color: var(--on-surface-variant);
  border: 1px solid rgba(198, 198, 205, 0.3);
}

.btn--ghost:hover {
  color: var(--on-surface);
  background: var(--surface-low);
}

.btn--lg { padding: 0.9375rem 2rem; font-size: var(--text-title-sm); border-radius: var(--radius-lg); }

.btn-group { display: flex; gap: 0.875rem; flex-wrap: wrap; }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.3125rem 0.75rem;
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  background: var(--surface-low);
  color: var(--on-surface-variant);
}

.badge--new {
  background: rgba(53, 99, 233, 0.15);
  color: var(--primary);
}

.badge--edge {
  background: rgba(199, 123, 0, 0.1);
  color: var(--accent-amber);
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 1.5rem;
  transition: background 0.3s, backdrop-filter 0.3s;
  background: rgba(251, 249, 248, 0.8);
  backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3);
}

.nav.scrolled {
  box-shadow: 0 1px 0 rgba(198, 198, 205, 0.15);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--on-surface);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.nav__logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  list-style: none;
}

.nav__links a, .nav__dropdown-trigger {
  padding: 0.4375rem 0.75rem;
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--on-surface-variant);
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav__links a:hover, .nav__dropdown-trigger:hover {
  color: var(--on-surface);
  background: var(--surface-low);
}

.nav__dropdown { position: relative; }

.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--surface-card);
  border-radius: var(--radius);
  padding: 0.375rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
  transform: translateX(-50%) translateY(4px);
  box-shadow: var(--shadow-ambient);
}

.nav__dropdown:hover .nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-menu a {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  border-radius: 8px;
}

.nav__dropdown-menu a:hover {
  color: var(--on-surface);
  background: var(--surface-low);
}

.nav__cta { margin-left: 0.5rem; }

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  position: relative;
  z-index: 1002;
}

.nav__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-surface);
  margin: 5px 0;
  border-radius: 2px;
}

.nav__mobile {
  display: none;
  position: fixed;
  top: 0 !important;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: #f8fafc;
  padding: 5.5rem 2rem 2rem;
  z-index: 1001;
  overflow-y: auto;
  flex-direction: column;
}

.nav__mobile.active {
  display: flex;
}

.nav__mobile .btn--primary {
  margin-top: 1.5rem;
  text-align: center;
  justify-content: center;
}

.nav__mobile a {
  display: block;
  padding: 1rem 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  transition: color 0.15s;
}

.nav__mobile a:hover { color: var(--on-surface); }

.nav__mobile a + a {
  border-top: 1px solid rgba(198, 198, 205, 0.12);
}

/* Hamburger animation */
.nav__toggle.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav__toggle span {
  transition: transform 0.3s ease, opacity 0.2s ease;
}

/* ── Hero ── */
.hero {
  padding: calc(68px + 4rem) 0 3rem;
  position: relative;
  overflow: hidden;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: var(--surface);
}

.hero--subpage {
  min-height: auto;
  padding: calc(68px + 3rem) 0 2.5rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(53, 99, 233, 0.06) 0%, transparent 70%);
  animation: hero-drift 20s ease-in-out infinite alternate;
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 50%;
  height: 50%;
  background: radial-gradient(ellipse, rgba(59, 108, 232, 0.04) 0%, transparent 70%);
  animation: hero-drift 25s ease-in-out infinite alternate-reverse;
}

@keyframes hero-drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(3%, 3%); }
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(198,198,205,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198,198,205,0.08) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 10%, transparent 60%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 10%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 740px;
}

.hero__content .badge { margin-bottom: 1.25rem; }
.hero__content .text-hero { margin-bottom: 1.25rem; }
.hero__content .text-body-lg { margin-bottom: 2.25rem; max-width: 600px; }
.hero__content .btn-group { margin-bottom: 2.5rem; }

.hero--centered .hero__content {
  text-align: center;
  margin: 0 auto;
}
.hero--centered .hero__content .text-body-lg { margin: 0 auto 2.25rem; }
.hero--centered .btn-group { justify-content: center; }

/* Hero dark variant */
.section--dark .text-hero,
.section--dark .text-h1,
.section--dark .text-h2,
.section--dark .text-h3 { color: var(--on-primary); }

/* ── Hero Mockup ── */
.hero__mockup {
  position: relative;
  z-index: 2;
  margin-top: 2.5rem;
  perspective: 1200px;
}

.hero__mockup-frame {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-ambient);
  transform: rotateX(2deg);
  transition: transform 0.6s var(--ease-out);
}

.hero__mockup-frame:hover { transform: rotateX(0deg); }

.hero__mockup-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--surface-low);
}

.hero__mockup-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--surface-high);
}

/* ── Image Placeholders ── */
.img-placeholder {
  background: var(--surface-low);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  color: var(--on-surface-variant);
  font-size: var(--text-body-sm);
  position: relative;
  overflow: hidden;
  opacity: 0.8;
}

.img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(53, 99, 233, 0.04) 0%, transparent 50%);
}

.img-placeholder__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--surface-high);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  position: relative;
  z-index: 1;
}

.img-placeholder__label {
  position: relative;
  z-index: 1;
  font-weight: 500;
  font-size: var(--text-label);
  opacity: 0.7;
}

/* ── Stat Cards ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.stat-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.75rem;
  position: relative;
  transition: box-shadow 0.3s, transform 0.3s var(--ease-out);
}

.stat-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.stat-card__number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--on-surface);
  margin-bottom: 0.375rem;
}

.stat-card__label {
  font-size: var(--text-title-sm);
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: 0.875rem;
}

.stat-card__body {
  font-size: var(--text-body-sm);
  line-height: 1.65;
  color: var(--on-surface-variant);
}

.stat-card__source {
  margin-top: 0.75rem;
  font-size: var(--text-label);
  color: var(--on-surface-variant);
  opacity: 0.5;
  font-style: italic;
}

/* ── Module Cards ── */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.module-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s, transform 0.3s var(--ease-out);
  position: relative;
}

.module-card:hover {
  box-shadow: var(--shadow-ambient);
  transform: translateY(-2px);
}

.module-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.875rem;
}

.module-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--surface-low);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--on-surface-variant);
}

.module-card__tag {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.module-card__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 700;
  margin-bottom: 0.625rem;
}

.module-card__desc {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.65;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.module-card__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
}

.pill {
  padding: 0.1875rem 0.5rem;
  font-size: var(--text-label);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  background: var(--surface-low);
  border-radius: var(--radius-full);
}

.module-card__image { margin-bottom: 1.25rem; }
.module-card__image .img-placeholder { aspect-ratio: 16/10; }

.module-card__link {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s var(--ease-out);
}

.module-card:hover .module-card__link { gap: 0.5rem; }

/* ── AI Vision Timeline ── */
.ai-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.ai-phase {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.ai-phase__badge {
  display: inline-flex;
  padding: 0.1875rem 0.5rem;
  font-size: var(--text-label);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.ai-phase--shipped .ai-phase__badge {
  background: rgba(22, 163, 74, 0.1);
  color: var(--success);
}

.ai-phase--building .ai-phase__badge {
  background: var(--primary-faint);
  color: var(--primary);
}

.ai-phase--vision .ai-phase__badge {
  background: var(--surface-high);
  color: var(--on-surface-variant);
}

.ai-phase__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 700;
  margin-bottom: 1rem;
}

.ai-phase__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.ai-phase__list li {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.55;
  padding-left: 1.125rem;
  position: relative;
}

.ai-phase__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.ai-phase--shipped .ai-phase__list li::before { background: var(--success); }
.ai-phase--building .ai-phase__list li::before { background: var(--primary); }
.ai-phase--vision .ai-phase__list li::before { background: var(--surface-high); }

.ai-phase--vision { opacity: 0.65; }

/* ── Differentiator Cards ── */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.diff-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  transition: box-shadow 0.3s;
}

.diff-card:hover { box-shadow: var(--shadow-soft); }

.diff-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--surface-low);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
}

.diff-card__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.diff-card__body {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* ── Steps ── */
.steps {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.step:nth-child(even) { direction: rtl; }
.step:nth-child(even) > * { direction: ltr; }

.step__meta {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.75rem;
}

.step__number {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--on-primary);
}

.step__time {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--primary);
  font-weight: 500;
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--text-headline-sm);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step__body {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* ── Tabs ── */
.tabs__nav {
  display: flex;
  gap: 0;
  width: fit-content;
  margin: 0 auto 2.5rem;
  background: var(--surface-low);
  border-radius: var(--radius);
  padding: 0.25rem;
}

.tabs__btn {
  padding: 0.625rem 1.25rem;
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--on-surface-variant);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tabs__btn:hover { color: var(--on-surface); }
.tabs__btn.active {
  background: var(--surface-card);
  color: var(--on-surface);
  box-shadow: var(--shadow-soft);
}

.tabs__panel { display: none; }
.tabs__panel.active { display: block; }

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1px;
  background: var(--surface-high);
  border-radius: var(--radius);
  overflow: hidden;
}

.use-case-item {
  background: var(--surface-card);
  padding: 1.5rem 1.625rem;
  transition: background 0.2s;
  border: none;
}

.use-case-item:hover {
  background: var(--surface-low);
}

.use-case-item__title {
  font-family: var(--font-display);
  font-size: var(--text-title-sm);
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--on-surface);
}

.use-case-item__desc {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* ── Integrations: Logo Marquee ── */
.integrations-stat {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--on-surface);
  letter-spacing: -0.03em;
  margin-bottom: 0.375rem;
}

.integrations-stat span {
  color: var(--primary);
}

.marquee-container {
  overflow: hidden;
  position: relative;
  padding: 0.625rem 0;
}

.marquee-container::before,
.marquee-container::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.marquee-container::before {
  left: 0;
  background: linear-gradient(90deg, var(--surface-low), transparent);
}

.marquee-container::after {
  right: 0;
  background: linear-gradient(270deg, var(--surface-low), transparent);
}

.marquee-track {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem;
  animation: marquee-scroll 35s linear infinite;
  width: max-content;
  will-change: transform;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1.125rem;
  background: var(--surface-card);
  border-radius: var(--radius);
  flex-shrink: 0;
  transition: box-shadow 0.2s;
  cursor: default;
}

.marquee-item:hover {
  box-shadow: var(--shadow-soft);
}

.marquee-item__icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--surface-low);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--on-surface-variant);
}

.marquee-item__logo {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  object-fit: contain;
}

.marquee-item__name {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--on-surface);
  white-space: nowrap;
}

/* Connector method pills */
.connector-methods {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.connector-pill {
  display: flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  background: var(--surface-card);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--on-surface-variant);
  transition: color 0.2s, background 0.2s;
}

.connector-pill:hover {
  color: var(--on-surface);
}

.connector-pill svg {
  flex-shrink: 0;
}

/* ── Roadmap Cards ── */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.roadmap-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  opacity: 0.55;
  transition: opacity 0.3s, box-shadow 0.3s;
  border: 1px dashed rgba(198, 198, 205, 0.3);
}

.roadmap-card:hover { opacity: 0.8; box-shadow: var(--shadow-soft); }

.roadmap-card__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
  opacity: 0.6;
}

.roadmap-card__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.roadmap-card__desc {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* ── CTA Section ── */
.cta-section {
  padding: var(--section-pad) 0;
  position: relative;
  overflow: hidden;
  background: var(--surface-void);
  color: var(--on-primary);
}

.cta-section__bg {
  position: absolute;
  inset: 0;
}

.cta-section__bg::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 30%;
  width: 40%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(53, 99, 233, 0.08) 0%, transparent 70%);
}

.cta-section__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-section__inner .text-h2 { margin-bottom: 0.875rem; color: var(--on-primary); }
.cta-section__inner .text-body-lg { margin-bottom: 2rem; color: rgba(255,255,255,0.65); }
.cta-section__inner .btn-group { justify-content: center; }
.cta-section__inner .btn--ghost { color: rgba(255,255,255,0.6); border-color: rgba(255,255,255,0.15); }
.cta-section__inner .btn--ghost:hover { color: #fff; background: rgba(255,255,255,0.06); }

/* ── Footer ── */
.footer {
  padding: 4rem 0 2rem;
  background: var(--surface-void);
  color: rgba(255,255,255,0.7);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer__brand { max-width: 260px; }
.footer__brand-name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer__brand-name .nav__logo-icon { background: none; }

.footer__brand-desc {
  font-size: var(--text-body-sm);
  line-height: 1.6;
  opacity: 0.6;
}

.footer__col-title {
  font-size: var(--text-label);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer__links a {
  font-size: var(--text-body-sm);
  color: rgba(255,255,255,0.55);
}
.footer__links a:hover { color: #fff; }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  box-shadow: 0 -1px 0 rgba(255,255,255,0.06);
  font-size: var(--text-label);
  color: rgba(255,255,255,0.3);
}

.footer__bottom-links { display: flex; gap: 1.25rem; }
.footer__bottom-links a { font-size: var(--text-label); color: rgba(255,255,255,0.3); }

/* ── Feature Rows (Module Pages) ── */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem 0;
}

.feature-row--reverse { direction: rtl; }
.feature-row--reverse > * { direction: ltr; }

.feature-row__title {
  font-family: var(--font-display);
  font-size: var(--text-headline-sm);
  font-weight: 700;
  margin-bottom: 0.875rem;
}

.feature-row__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.feature-row__list li {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.6;
  padding-left: 1.125rem;
  position: relative;
}

.feature-row__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary-light);
}

.feature-row__callout {
  background: rgba(53, 99, 233, 0.08);
  border-left: 3px solid var(--primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.875rem 1.125rem;
  font-size: var(--text-body-sm);
  color: var(--primary);
  line-height: 1.6;
}

/* ── AI Callout ── */
.ai-callout {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
}

.ai-callout::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent-blue), var(--primary-light));
}

.ai-callout__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ai-callout__body {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.7;
}

.ai-callout__body strong {
  color: var(--on-surface);
  font-weight: 600;
}

/* ── Problem Cards ── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.125rem;
}

.problem-card {
  background: var(--surface-card);
  border-left: 4px solid var(--error);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.75rem;
}

.problem-card__title {
  font-family: var(--font-display);
  font-size: var(--text-title-sm);
  font-weight: 700;
  margin-bottom: 0.625rem;
}

.problem-card__body {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.65;
}

/* ── Scroll Animations ── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children > .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.stagger-children > .animate-on-scroll:nth-child(2) { transition-delay: 0.06s; }
.stagger-children > .animate-on-scroll:nth-child(3) { transition-delay: 0.12s; }
.stagger-children > .animate-on-scroll:nth-child(4) { transition-delay: 0.18s; }
.stagger-children > .animate-on-scroll:nth-child(5) { transition-delay: 0.24s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .modules-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .ai-timeline { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: repeat(2, 1fr); }
  .step { grid-template-columns: 1fr; gap: 1.5rem; }
  .step:nth-child(even) { direction: ltr; }
  .feature-row { grid-template-columns: 1fr; gap: 1.5rem; }
  .feature-row--reverse { direction: ltr; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: block; }

  .hero { min-height: auto; padding: calc(68px + 1.5rem) 0 1.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .tabs__nav { flex-direction: column; width: 100%; }
  .use-case-grid { grid-template-columns: 1fr; }
  .integrations-grid { grid-template-columns: 1fr 1fr; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
  .section { padding: clamp(2.5rem, 6vw, 4rem) 0; }
  .section-header { margin-bottom: 2rem; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--surface-high); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline-variant); }