:root {
  color-scheme: dark;

  /* ── Surfaces (legacy + Brand System V2 aliases) ── */
  --bg-0: #060b14;
  --bg-1: #0b1220;
  --bg-2: #111a2b;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.05);
  --surface-page: var(--bg-0);
  --surface-section: var(--bg-1);
  --surface-card: var(--surface);
  --surface-card-hover: var(--surface-hover);
  --surface-elevated: var(--bg-2);

  /* ── Borders ── */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: var(--border);
  --border-brand: rgba(0, 102, 255, 0.35);

  /* ── Text ── */
  --text: #f5f7fa;
  --text-muted: #a3b1c4;
  --text-dim: #73849a;

  /* ── Brand primary (single corporate accent) ── */
  --brand: #0066ff;
  --brand-soft: rgba(0, 102, 255, 0.12);
  --brand-primary: var(--brand);
  --brand-primary-soft: var(--brand-soft);
  --brand-primary-strong: #1a75ff;

  /* ── Cyan = focus / data / live only (not competing CTAs) ── */
  --cyan: #22d3ee;
  --cyan-soft: rgba(34, 211, 238, 0.1);
  --brand-focus: var(--cyan);
  --brand-data: var(--cyan);

  /* ── Violet = decorative wash only (never CTA/badge/border) ── */
  --violet: #6c63ff;
  --violet-soft: rgba(108, 99, 255, 0.08);
  --brand-decorative: var(--violet);

  /* ── Glow: controlled, low opacity, one source per component ── */
  --glow-none: none;
  --glow-subtle: rgba(0, 102, 255, 0.1);
  --glow-focus: rgba(34, 211, 238, 0.28);
  --glow-hero: rgba(0, 102, 255, 0.1);
  --brand-glow: var(--glow-hero);

  --success: #22c55e;
  --warning: #f59e0b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --container: 1280px;
  --container-product: 1180px;
  --container-legal: 920px;
  --prose: 65ch;
  --nav-height: 72px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  /* Spacing System V2 — section rhythm (8px grid) */
  --space-section-lg: 96px;
  --space-section-md: 80px;
  --space-section-sm: 64px;
  --space-section-mobile: 56px;
  --gap-grid: var(--space-4);
  --gap-grid-tight: var(--space-3);
  --gap-stack: var(--space-3);
  --pad-card: var(--space-4);
  --pad-card-tight: var(--space-3);

  /* ── Component System V2 — buttons / cards / badges / surfaces / links ── */
  --btn-height: 44px;
  --btn-height-compact: 36px;
  --btn-radius: 999px;
  --btn-padding-x: 1.25rem;
  --btn-padding-x-compact: 0.9rem;
  --btn-font-size: var(--text-body-sm);
  --btn-font-weight: var(--weight-semibold);
  --btn-disabled-opacity: 0.45;
  --card-radius: var(--radius-lg);
  --card-padding: var(--pad-card);
  --card-gap: var(--gap-grid);
  --card-border: var(--border);
  --card-border-hover: var(--border-strong);
  --card-bg: var(--surface-card);
  --card-bg-hover: var(--surface-card-hover);
  --card-shadow: none;
  --card-shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.2);
  --surface-border: var(--border);
  --badge-radius: 999px;
  --badge-padding-y: 0.25rem;
  --badge-padding-x: 0.6rem;
  --badge-height: auto;
  --badge-font-size: var(--text-label);
  --link-hover-opacity: 0.88;
  --hover-lift: -1px;
  --hover-lift-strong: -2px;
  --focus-ring: 2px solid var(--brand-focus);
  --focus-offset: 2px;

  /* ── Motion System V2 — restrained premium motion ── */
  --motion-duration-fast: 120ms;
  --motion-duration-base: 200ms;
  --motion-duration-slow: 360ms;
  --motion-ease-standard: cubic-bezier(0.25, 0.1, 0.25, 1);
  --motion-ease-emphasized: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ease-exit: cubic-bezier(0.4, 0, 1, 1);
  --motion-distance-sm: 8px;
  --motion-distance-md: 12px;
  --motion-scale-subtle: 0.99;
  --motion-opacity-muted: 0.72;
  --transition-control:
    background var(--motion-duration-base) var(--motion-ease-standard),
    border-color var(--motion-duration-base) var(--motion-ease-standard),
    color var(--motion-duration-base) var(--motion-ease-standard),
    transform var(--motion-duration-fast) var(--motion-ease-standard),
    box-shadow var(--motion-duration-base) var(--motion-ease-standard),
    opacity var(--motion-duration-base) var(--motion-ease-standard);

  /* ── Iconography System V2 — outline UI icons ── */
  --icon-size: 20px;
  --icon-box: 40px;
  --icon-stroke: 1.5;
  --icon-radius: var(--radius-sm);
  --icon-color: var(--brand-primary);
  --icon-bg: var(--brand-primary-soft);

  /* ── Logo optical system ── */
  --brand-mark-nav-size: 36px;
  --brand-mark-footer-size: 32px;
  --brand-mark-product-size: 36px;
  --brand-lockup-gap: 0.7rem;
  --brand-clear-space: 8px;

  /* ── Typography System V2 (IBM Plex Sans — single family display+body+UI) ── */
  --font-display: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: var(--font-display);
  --font-ui: var(--font-display);
  --font-mono: "SF Mono", "Cascadia Code", "Segoe UI Mono", Consolas, monospace;
  --font: var(--font-body);
  --mono: var(--font-mono);

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --text-display-xl: clamp(2.15rem, 4.8vw, 3.15rem);
  --text-display-lg: clamp(1.85rem, 3.6vw, 2.55rem);
  --text-heading-1: clamp(1.7rem, 2.8vw, 2.2rem);
  --text-heading-2: clamp(1.25rem, 2vw, 1.55rem);
  --text-heading-3: 1.1rem;
  --text-body-lg: clamp(1.02rem, 1.4vw, 1.125rem);
  --text-body: 1rem;
  --text-body-sm: 0.9rem;
  --text-caption: 0.78rem;
  --text-label: 0.7rem;

  --leading-tight: 1.1;
  --leading-heading: 1.2;
  --leading-body: 1.65;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.028em;
  --tracking-heading: -0.02em;
  --tracking-normal: 0;
  --tracking-label: 0.06em;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  background: var(--bg-0);
  color: var(--text);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.hero-spotlight:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: var(--space-2);
  z-index: 200;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  border: 1px solid var(--border-strong);
  transform: translateY(-160%);
  transition: transform var(--motion-duration-fast) var(--motion-ease-standard);
}

.skip-link:focus {
  transform: translateY(0);
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.nav-cta:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

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

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

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

.container {
  width: min(var(--container), calc(100% - 2 * var(--space-3)));
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--brand);
}

.section {
  padding: var(--space-section-md) 0;
}

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

/* Section rhythm V2 — not every block uses the same breath */
#urunler.section {
  padding: var(--space-section-lg) 0 var(--space-section-md);
}

#sirket.section {
  padding: var(--space-section-md) 0;
}

#platform.section {
  padding: var(--space-section-lg) 0;
}

#teknoloji.section {
  padding: var(--space-section-md) 0;
}

#yapay-zeka.section {
  padding: var(--space-section-lg) 0;
}

#guvenlik.section {
  padding: var(--space-section-lg) 0 var(--space-section-md);
}

#proof.section {
  padding: var(--space-section-sm) 0;
}

#iletisim.section {
  padding: var(--space-section-lg) 0 var(--space-section-md);
}

.section-header {
  max-width: 40rem;
  margin-bottom: var(--space-6);
}

.section-header h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-heading-1);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--text-body-lg);
  line-height: var(--leading-body);
  max-width: var(--prose);
}

/* ── Navigation ── */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  /* Avoid animating backdrop-filter (expensive paint) */
  transition:
    background var(--motion-duration-base) var(--motion-ease-standard),
    border-color var(--motion-duration-base) var(--motion-ease-standard);
}

.site-nav.is-scrolled {
  background: rgba(6, 11, 20, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: var(--space-3);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: var(--brand-lockup-gap);
  flex-shrink: 0;
  /* Clear space ≈ 1× mark unit on interactive hit area (optical, not layout shift) */
  padding: var(--brand-clear-space) 0;
  margin: calc(var(--brand-clear-space) * -1) 0;
}

.brand-lockup .brand-mark {
  width: var(--brand-mark-nav-size);
  height: var(--brand-mark-nav-size);
}

.site-footer .brand-lockup .brand-mark {
  width: var(--brand-mark-footer-size);
  height: var(--brand-mark-footer-size);
}

.brand-lockup img,
.brand-lockup .brand-mark--raster {
  width: var(--brand-mark-nav-size);
  height: var(--brand-mark-nav-size);
  object-fit: contain;
  object-position: center;
  display: block;
  flex-shrink: 0;
  border-radius: 8px;
}

.site-footer .brand-lockup img,
.site-footer .brand-lockup .brand-mark--raster {
  width: var(--brand-mark-footer-size);
  height: var(--brand-mark-footer-size);
  border-radius: 7px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-name {
  font-family: var(--font-ui);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-heading);
  color: var(--text);
}

.brand-sub {
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  color: var(--text-dim);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-normal);
  color: var(--text-muted);
  transition:
    color var(--motion-duration-fast) var(--motion-ease-standard),
    background var(--motion-duration-fast) var(--motion-ease-standard);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: var(--surface-hover);
}

.nav-cta {
  /* Compact primary CTA — same family as .btn-primary */
  display: inline-flex;
  align-items: center;
  min-height: var(--btn-height-compact);
  padding: 0 var(--btn-padding-x-compact);
  border-radius: var(--btn-radius);
  background: var(--brand-primary);
  color: #fff;
  font-family: var(--font-ui);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  letter-spacing: var(--tracking-normal);
  text-transform: none;
  transition: var(--transition-control);
}

.nav-cta:hover {
  background: var(--brand-primary-strong);
}

.nav-cta:active {
  transform: scale(var(--motion-scale-subtle));
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s ease;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

/* ── Hero ── */

.hero {
  position: relative;
  min-height: min(100vh, 920px);
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + var(--space-7)) 0 var(--space-section-lg);
  overflow: hidden;
}

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

.hero-radial {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 42% 34% at 72% 32%, var(--glow-hero), transparent 72%),
    linear-gradient(180deg, var(--surface-page) 0%, var(--surface-section) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 55% at 70% 40%, black 15%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 60% 55% at 70% 40%, black 15%, transparent 72%);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--space-6);
  align-items: center;
}

.hero-copy {
  max-width: 36rem;
}

.hero-company {
  margin: 0 0 var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-dim);
}

.hero h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-display-xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  max-width: 18ch;
}

.hero-lead {
  margin: 0 0 var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  font-weight: var(--weight-regular);
  color: var(--text-muted);
  max-width: var(--prose);
  line-height: var(--leading-body);
}

.hero-sub {
  margin: 0 0 var(--space-5);
  font-size: var(--text-body-sm);
  color: var(--text-dim);
  max-width: 52ch;
  line-height: var(--leading-body);
}

.hero-product-badge {
  display: inline-block;
  margin: 0 0 var(--space-2);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: var(--text-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--brand-primary);
  background: var(--brand-primary-soft);
  border: 1px solid var(--border-brand);
}

.hero-store-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: var(--space-2);
}

.btn-compact {
  min-height: var(--btn-height-compact);
  padding: 0 var(--btn-padding-x-compact);
  font-size: 0.82rem;
}

/* Card family: Spotlight — quieter than H1; featured product, not rival */
.hero-spotlight {
  display: block;
  padding: var(--space-4);
  border-radius: var(--card-radius);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: none;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-control);
}

.hero-spotlight:hover {
  transform: translateY(var(--hover-lift));
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: none;
}

.hero-spotlight-badge {
  display: inline-block;
  margin-bottom: 0.65rem;
  padding: var(--badge-padding-y) var(--badge-padding-x);
  border-radius: var(--badge-radius);
  font-family: var(--font-ui);
  font-size: var(--badge-font-size);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  /* Live / data indicator — cyan allowed here only */
  color: var(--brand-data);
  background: var(--cyan-soft);
  border: 1px solid rgba(34, 211, 238, 0.22);
}

.hero-spotlight-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-heading-2);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--text);
}

.hero-spotlight-lead {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.hero-spotlight-list {
  margin: 0 0 1rem;
  padding: 0 0 0 1.1rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.55;
}

.hero-spotlight-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-primary);
}

.hero-spotlight:hover .hero-spotlight-link {
  opacity: var(--link-hover-opacity);
}

.card-grid-products {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .card-grid-products {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

.hero-actions--conversion {
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.hero-actions--conversion .btn-primary {
  min-width: 11.5rem;
}

/* Button system: primary | secondary | ghost (text/link = inline anchors) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--btn-height);
  padding: 0 var(--btn-padding-x);
  border-radius: var(--btn-radius);
  font-family: var(--font-ui);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  letter-spacing: var(--tracking-normal);
  text-transform: none;
  transition: var(--transition-control);
}

.btn:active {
  transform: scale(var(--motion-scale-subtle));
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: var(--btn-disabled-opacity);
  pointer-events: none;
}

.btn-primary {
  background: var(--brand-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-primary-strong);
}

.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.18);
}

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

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

.hero-visual {
  position: relative;
  min-height: 380px;
}

.hero-diagram {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: rgba(11, 18, 32, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
}

.hero-diagram svg {
  width: 100%;
  height: 100%;
}

/* ── Cards & grids ──
   Families: Interactive | Surface (info/contact) | Spotlight | Legal (emergency)
*/

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}

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

/* Card family: Interactive */
.capability-card,
.proof-card,
.product-card,
.tech-card {
  padding: var(--card-padding);
  border-radius: var(--card-radius);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: var(--transition-control);
}

.capability-card:hover,
.proof-card:hover,
.product-card:hover {
  border-color: var(--card-border-hover);
  background: var(--card-bg-hover);
  transform: translateY(var(--hover-lift));
  /* Single dominant response: lift + surface — no competing glow */
  box-shadow: var(--card-shadow);
}

.capability-card h3,
.proof-card h3,
.product-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

.capability-card p,
.proof-card p,
.product-card p {
  margin: 0;
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  line-height: var(--leading-body);
}

.capability-icon {
  width: var(--icon-box);
  height: var(--icon-box);
  margin-bottom: var(--space-2);
  border-radius: var(--icon-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--icon-bg);
  color: var(--icon-color);
}

.ui-icon {
  width: var(--icon-size);
  height: var(--icon-size);
  display: block;
  stroke-width: var(--icon-stroke);
  flex-shrink: 0;
}

.proof-card .proof-tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: var(--badge-padding-y) var(--badge-padding-x);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: var(--badge-font-size);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  background: var(--brand-soft);
  color: var(--brand);
}

/* ── Products ── */

.product-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
}

.product-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.product-badge {
  flex-shrink: 0;
  padding: var(--badge-padding-y) var(--badge-padding-x);
  border-radius: var(--badge-radius);
  font-family: var(--font-ui);
  font-size: var(--badge-font-size);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.badge-active {
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
}

.badge-dev {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
}

.badge-enterprise {
  background: var(--brand-soft);
  color: var(--brand);
}

.badge-ai {
  /* Violet reserved for decorative wash — badges use primary */
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
}

.product-category {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.product-card.leylek {
  border-color: var(--border-brand);
}

.product-card.leylek:hover {
  border-color: rgba(0, 102, 255, 0.45);
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: var(--space-2);
}

.product-actions .btn {
  min-height: 38px;
  padding: 0 0.9rem;
  font-size: 0.82rem;
}

/* ── Technology ── */

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-2);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  transition:
    border-color var(--motion-duration-fast) var(--motion-ease-standard),
    color var(--motion-duration-fast) var(--motion-ease-standard);
}

.tech-pill:hover {
  border-color: var(--brand);
  color: var(--text);
}

.tech-diagram {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-1);
  overflow-x: auto;
}

.tech-flow {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 640px;
  font-family: var(--mono);
  font-size: 0.75rem;
}

.tech-node {
  flex-shrink: 0;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  text-align: center;
  white-space: nowrap;
}

.tech-node.highlight {
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand);
}

.tech-arrow {
  flex-shrink: 0;
  width: 32px;
  height: 1px;
  background: var(--border-strong);
  position: relative;
}

.tech-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left-color: var(--text-dim);
}

/* ── AI & Security ── */

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Card family: Surface (static information / contact — no lift) */
.info-panel {
  padding: var(--card-padding);
  border-radius: var(--card-radius);
  border: 1px solid var(--surface-border);
  background: var(--card-bg);
}

.info-panel h3 {
  margin: 0 0 var(--space-2);
  font-size: 1.1rem;
}

.info-panel p {
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.info-panel p:last-child {
  margin-bottom: 0;
}

.info-list {
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
}

.info-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.info-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}

/* ── Company story ── */

.story-block {
  max-width: 720px;
}

.story-block p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-body-lg);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.story-block p:last-child {
  margin-bottom: 0;
}

.company-dna {
  margin-top: var(--space-6);
}

.dna-item {
  padding: var(--space-3) 0 var(--space-4);
  border: none;
  border-top: 1px solid var(--border-subtle);
  border-radius: 0;
  background: transparent;
}

.dna-item .capability-icon {
  margin-bottom: var(--space-2);
}

.dna-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

.dna-item p {
  margin: 0;
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  line-height: var(--leading-body);
}

/* Technology — horizontal value rail (not another card grid) */
.value-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 768px) {
  .value-rail {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-6);
  }
}

.value-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
  background: transparent;
}

.value-item .capability-icon {
  margin-bottom: 0;
}

.value-item-body h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

.value-item-body p {
  margin: 0;
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  line-height: var(--leading-body);
}

/* AI — primary panel carries weight; secondary quieter */
.ai-split {
  gap: var(--space-4);
}

.info-panel--primary {
  border-color: var(--border-brand);
  background: linear-gradient(165deg, var(--brand-primary-soft), var(--surface));
}

.info-panel--secondary {
  background: transparent;
  border-color: var(--border-subtle);
}

/* Trust — calm panels, no card competition */
.trust-panel {
  padding: var(--pad-card-tight);
  border-radius: var(--card-radius);
  border: 1px solid var(--border-subtle);
  background: transparent;
}

.trust-panel h3 {
  margin: 0 0 var(--space-2);
  font-size: 1rem;
}

.trust-panel p {
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Proof — footnote weight */
.section-proof .section-header--compact {
  margin-bottom: var(--space-4);
}

.proof-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 768px) {
  .proof-rail {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 var(--space-5);
  }
}

.section-proof .proof-card {
  padding: var(--space-3) 0;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.section-proof .proof-card:hover {
  transform: none;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

/* Contact — final corporate CTA band */
.contact-band {
  padding: var(--space-5);
  border-radius: var(--card-radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}

.section-header--contact {
  margin-bottom: var(--space-5);
}

.contact-band .contact-card {
  background: transparent;
  border-color: var(--border-subtle);
}

.company-identity {
  margin: var(--space-6) 0 0;
  max-width: 720px;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.company-actions {
  margin-top: var(--space-5);
}

/* ── Contact ── */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.contact-card {
  padding: var(--card-padding);
  border-radius: var(--card-radius);
  border: 1px solid var(--surface-border);
  background: var(--card-bg);
}

.contact-card h3 {
  margin: 0 0 var(--space-2);
  font-size: 1rem;
}

.contact-card p,
.contact-card a {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact-card a:hover {
  color: var(--brand);
}

/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-section-md) 0 var(--space-5);
  background: var(--bg-1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer-brand p {
  margin: var(--space-2) 0 0;
  font-size: 0.88rem;
  color: var(--text-dim);
  max-width: 280px;
}

.footer-brand-contact {
  margin-top: var(--space-2) !important;
}

.footer-brand-contact a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-brand-contact a:hover {
  color: var(--text);
}

.footer-col h4 {
  margin: 0 0 var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

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

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--motion-duration-fast) var(--motion-ease-standard);
}

.footer-col a:hover {
  color: var(--text);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.sonic-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition-control);
}

.sonic-toggle:hover:not(:disabled) {
  border-color: var(--border-strong);
  color: var(--text);
}

.sonic-toggle:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.sonic-toggle.is-on {
  border-color: rgba(0, 102, 255, 0.35);
  color: var(--brand);
  background: var(--brand-soft);
}

.sonic-toggle:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sonic-toggle-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

.sonic-toggle.is-on .sonic-toggle-icon {
  opacity: 1;
  box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.2);
}

/* ── Responsive ── */

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .hero-visual {
    min-height: auto;
    max-width: 36rem;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-grid-tight);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: calc(var(--nav-height) + var(--space-5)) 0 var(--space-section-sm);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-cta-desktop {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    padding: var(--space-2) var(--space-3) var(--space-3);
    background: rgba(6, 11, 20, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }

  .nav-links.is-open a {
    width: 100%;
    min-height: 44px;
    padding: 0.75rem;
  }

  .card-grid,
  .card-grid-2,
  .split-section,
  .contact-grid,
  .footer-grid,
  .value-rail,
  .proof-rail,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .contact-band {
    padding: var(--space-4);
  }

  .section {
    padding: var(--space-section-mobile) 0;
  }

  #urunler.section,
  #platform.section,
  #yapay-zeka.section,
  #guvenlik.section,
  #iletisim.section {
    padding: var(--space-section-sm) 0;
  }

  #proof.section,
  #sirket.section,
  #teknoloji.section {
    padding: var(--space-section-mobile) 0;
  }

  .section-header {
    margin-bottom: var(--space-5);
  }
}

@keyframes nodePulse {
  0%,
  100% {
    opacity: var(--motion-opacity-muted);
  }
  50% {
    opacity: 1;
  }
}

.pulse-node {
  animation: nodePulse 6s var(--motion-ease-standard) infinite;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-canvas {
    display: none;
  }

  .pulse-node {
    animation: none;
    opacity: 1;
  }

  .site-nav,
  .nav-links a,
  .nav-cta,
  .btn,
  .tech-pill,
  .footer-col a,
  .footer-brand-contact a,
  .contact-card a,
  .hero-spotlight,
  .capability-card,
  .proof-card,
  .product-card,
  .sonic-toggle {
    transition: none !important;
  }

  .hero-spotlight:hover,
  .capability-card:hover,
  .proof-card:hover,
  .product-card:hover,
  .nav-cta:active,
  .btn:active {
    transform: none;
    box-shadow: none;
  }

  .section-proof .proof-card:hover {
    transform: none;
  }
}