/* ==========================================================================
   VIETNAM PROGRAMMER CO., LTD. — BRAND IDENTITY & DESIGN SYSTEM
   Standard: brandkit & inspo // Mode: Dark Developer / Quantum Operator
   Colors: Obsidian Void (#07090E), Electric Cyan (#00F0FF), Cobalt (#2563EB)
   ========================================================================== */

:root {
  /* Canvas & Base Space (Obsidian Void & Deep Charcoal) */
  --color-canvas: #07090e;
  --color-canvas-subtle: #0b0f19;
  --color-surface: #0f1626;
  --color-surface-elevated: #151f35;
  --color-surface-translucent: rgba(11, 15, 25, 0.88);
  --color-surface-hover: #1b2640;
  
  /* Ink & Typography (Stark Titanium, Ice White, Muted Slate) */
  --color-ink-primary: #f8fafc;
  --color-ink-secondary: #cbd5e1;
  --color-ink-muted: #64748b;
  --color-ink-faint: #334155;
  
  /* Hairline Borders & Glass Accents */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-subtle: rgba(255, 255, 255, 0.04);
  --color-border-hover: rgba(56, 189, 248, 0.35);
  --color-border-active: rgba(0, 240, 255, 0.5);
  
  /* Electric Accents (Quantum Cyan & Hyper Cobalt) */
  --color-accent: #38bdf8;
  --color-accent-glow: #00f0ff;
  --color-accent-hover: #0ea5e9;
  --color-accent-subtle: rgba(56, 189, 248, 0.12);
  --color-accent-border: rgba(56, 189, 248, 0.28);
  
  /* Functional Signals */
  --color-emerald: #10b981;
  --color-emerald-subtle: rgba(16, 185, 129, 0.14);
  --color-amber: #f59e0b;
  --color-amber-subtle: rgba(245, 158, 11, 0.14);
  
  /* Terminal & Code Elements */
  --color-terminal-bg: #05070c;
  --color-terminal-surface: #0b0f17;
  --color-terminal-text: #e2e8f0;
  --color-terminal-muted: #64748b;
  --color-terminal-accent: #38bdf8;
  --color-terminal-border: rgba(255, 255, 255, 0.07);

  /* Typography Stacks */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Elevation & Ambient Shadows */
  --shadow-whisper: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.06);
  --shadow-lift: 0 20px 45px -15px rgba(0, 0, 0, 0.9), 0 0 24px -6px rgba(56, 189, 248, 0.2);
  --shadow-glow: 0 0 35px -5px rgba(0, 240, 255, 0.25);

  /* Geometry */
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1400px;
  --transition-tactile: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

body {
  background-color: var(--color-canvas);
  color: var(--color-ink-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: clip;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  min-height: 100dvh;
  position: relative;
}

/* Subtle Ambient Dot-Matrix Background Texture */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background-image: radial-gradient(rgba(56, 189, 248, 0.09) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-tactile);
}

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

/* Bilingual Engine Control */
body.lang-en-active .lang-vi {
  display: none !important;
}

body.lang-vi-active .lang-en {
  display: none !important;
}

/* Container Constraint */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 4vw, 3rem);
  padding-right: clamp(1.25rem, 4vw, 3rem);
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-surface-translucent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-tactile);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.75rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.brand-emblem {
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-tactile);
}

.brand-emblem:hover {
  transform: scale(1.06);
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.35));
}

.brand-meta {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -0.025em;
  color: var(--color-ink-primary);
  line-height: 1.2;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  letter-spacing: 0.02em;
  margin-top: 0.125rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition-tactile);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  padding: 0.1875rem;
  border-radius: var(--radius-full);
}

.lang-btn {
  padding: 0.3125rem 0.625rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-ink-muted);
  border-radius: var(--radius-full);
  transition: var(--transition-tactile);
}

.lang-btn:hover {
  color: var(--color-ink-primary);
}

.lang-btn.active {
  background: var(--color-surface-elevated);
  color: var(--color-accent-glow);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

/* Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #0284c7 0%, #00f0ff 100%);
  color: #040812;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.6875rem 1.35rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
  white-space: nowrap;
  box-shadow: 0 0 20px -3px rgba(0, 240, 255, 0.35);
  border: 1px solid rgba(0, 240, 255, 0.4);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
  transform: translateY(-1px);
  box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
}

.btn-primary:active {
  transform: translateY(1px) scale(0.99);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--color-ink-primary);
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.6875rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
  white-space: nowrap;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent);
  color: var(--color-accent-glow);
  transform: translateY(-1px);
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.15);
}

.btn-secondary:active {
  transform: translateY(1px) scale(0.99);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  padding: 0.5rem;
  color: var(--color-ink-primary);
}

/* ==========================================================================
   HERO SECTION (Asymmetric Split 55 / 45)
   ========================================================================== */
.hero-section {
  padding-top: clamp(3rem, 6vw, 5.5rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
}

.hero-left {
  display: flex;
  flex-direction: column;
}

/* Telemetry Operational Pill */
.operational-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-secondary);
  margin-bottom: 1.5rem;
  width: fit-content;
  box-shadow: var(--shadow-whisper);
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: var(--color-emerald);
  border-radius: 50%;
  position: relative;
}

.status-dot::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  background: var(--color-emerald);
  opacity: 0.4;
  animation: pulse-beacon 2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes pulse-beacon {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* Headline with Inline Typography Visuals */
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 4.8vw, 3.85rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--color-ink-primary);
  margin-bottom: 1.5rem;
}

.inline-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  vertical-align: middle;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
  padding: 0.125rem 0.625rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.5em;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
  transform: translateY(-0.15em);
}

.hero-description {
  font-size: clamp(1.0625rem, 1.8vw, 1.1875rem);
  color: var(--color-ink-secondary);
  line-height: 1.7;
  max-width: 58ch;
  margin-bottom: 2rem;
}

/* Concrete Metric Strip */
.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
  margin-bottom: 2.25rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 0.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero Right — Interactive Runtime Simulator */
.hero-right {
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.terminal-card {
  background-color: var(--color-terminal-bg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift), 0 0 0 1px rgba(15, 23, 42, 0.5);
  overflow: hidden;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  transition: var(--transition-tactile);
}

.terminal-header {
  background-color: var(--color-terminal-surface);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-width: 0;
  overflow: hidden;
}

.terminal-controls {
  display: flex;
  align-items: center;
  gap: 0.4375rem;
  flex-shrink: 0;
}

.terminal-ctrl {
  width: 0.6875rem;
  height: 0.6875rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.16);
}

.terminal-ctrl.red { background-color: #ef4444; opacity: 0.8; }
.terminal-ctrl.yellow { background-color: #f59e0b; opacity: 0.8; }
.terminal-ctrl.green { background-color: #10b981; opacity: 0.8; }

.terminal-tabs {
  display: flex;
  gap: 0.375rem;
  overflow-x: auto;
  min-width: 0;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.terminal-tabs::-webkit-scrollbar {
  display: none;
}

.terminal-tab-btn {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-terminal-muted);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
  white-space: nowrap;
  flex-shrink: 0;
}

.terminal-tab-btn.active {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-terminal-accent);
}

.terminal-body {
  padding: clamp(0.875rem, 3vw, 1.25rem);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-terminal-text);
  min-height: 18rem;
  overflow-x: auto;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

.terminal-code {
  display: none;
  min-width: 0;
}

.terminal-code.active {
  display: block;
}

.code-line {
  display: flex;
  gap: 0.625rem;
  min-width: 0;
}

.code-num {
  color: var(--color-terminal-muted);
  user-select: none;
  min-width: 1.5rem;
  text-align: right;
  flex-shrink: 0;
}

.code-txt {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  overflow-wrap: anywhere;
}
}

.code-comment { color: #64748b; }
.code-keyword { color: #f43f5e; font-weight: 600; }
.code-string { color: #10b981; }
.code-prop { color: #38bdf8; }
.code-val { color: #fbbf24; }
.code-fn { color: #a78bfa; }

.terminal-footer {
  background-color: rgba(15, 23, 42, 0.85);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0.625rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-terminal-muted);
}

.terminal-status-live {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  color: #34d399;
}

/* ==========================================================================
   SECTION COMMON HEADERS
   ========================================================================== */
.section {
  padding-top: clamp(3.5rem, 7vw, 6.5rem);
  padding-bottom: clamp(3.5rem, 7vw, 6.5rem);
  position: relative;
}

.section-alt {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-head {
  display: flex;
  flex-direction: column;
  margin-bottom: clamp(2.25rem, 4.5vw, 3.75rem);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-ink-primary);
  margin-bottom: 0.875rem;
}

.section-desc {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  color: var(--color-ink-secondary);
  line-height: 1.65;
  max-width: 65ch;
}

/* ==========================================================================
   BENTO GRID ARCHITECTURE (NO 3 EQUAL CARDS BAN)
   Row 1: 2fr (Featured) + 1fr + 1fr
   Row 2: 70% / 30% Asymmetric Split
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.bento-row-two {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
}

.bento-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-tactile);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-lift);
}

.card-top {
  display: flex;
  flex-direction: column;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  padding: 0.1875rem 0.5rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  width: fit-content;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--color-ink-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.card-meta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.card-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
}

.meta-icon-bullet {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 700;
  margin-top: -0.05rem;
}

.card-footer-action {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.action-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
}

.action-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.repo-pill {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
}

/* Feature Showcase Preview in Large Bento */
.featured-code-preview {
  background: var(--color-terminal-bg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-terminal-text);
  margin-bottom: 1.25rem;
  overflow-x: auto;
  word-break: break-word;
  overflow-wrap: anywhere;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  line-height: 1.55;
  -webkit-overflow-scrolling: touch;
}

/* ==========================================================================
   OFFICIAL PUBLISHED DEVELOPER PRODUCTS (Open VSX Registry Showcase)
   Products: antigravity-unity (21k+ dl) & antigravity-always-run (15k+ dl)
   ========================================================================== */
.products-showcase-container {
  margin-top: 3.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--color-border);
}

.products-showcase-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.product-showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.product-showcase-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--color-ink-primary);
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.products-total-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-whisper);
}

.products-total-stat .stat-number {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent-glow);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.products-total-stat .stat-label {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-tactile);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #2563eb);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: var(--shadow-lift);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card-top {
  display: flex;
  flex-direction: column;
}

.product-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.product-icon-title-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.product-icon-frame {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-glow);
  flex-shrink: 0;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.product-name-block {
  display: flex;
  flex-direction: column;
}

.product-id-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.product-display-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-ink-primary);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.product-version-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-ink-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.product-metric-chips {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.product-metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-ink-secondary);
}

.product-metric-chip.downloads {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
  font-weight: 700;
}

.product-metric-chip.rating {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fbbf24;
  font-weight: 700;
}

.product-desc {
  font-size: 0.9375rem;
  color: var(--color-ink-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.product-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.product-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
  line-height: 1.55;
}

.product-card-footer {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.product-registry-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.product-install-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #0284c7 0%, #00f0ff 100%);
  color: #040812;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.5625rem 1.125rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
  border: 1px solid rgba(0, 240, 255, 0.4);
}

.product-install-btn:hover {
  background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.55);
}

@media (max-width: 900px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
  .products-total-stat {
    align-items: flex-start;
    width: 100%;
  }
}

/* ==========================================================================
   GAME ENGINE MATRIX & STUDIO HIERARCHY
   ========================================================================== */
.studio-hierarchy-board {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-card);
  margin-bottom: 3.5rem;
}

.hierarchy-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.hierarchy-stats {
  display: flex;
  gap: 1.5rem;
}

.h-stat {
  display: flex;
  flex-direction: column;
}

.h-stat-num {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.h-stat-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.hierarchy-columns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

.h-dept {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.h-dept-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0.75rem;
}

.h-dept-agents {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.h-agent-tag {
  font-size: 0.75rem;
  color: var(--color-ink-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.h-agent-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Tri-Engine Competency Tabs */
.engine-matrix-section {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.engine-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: var(--transition-tactile);
}

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

.engine-icon-wrap {
  width: 3rem;
  height: 3rem;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.engine-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.engine-experience-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-emerald);
  margin-bottom: 1rem;
}

.engine-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
}

.engine-bullets li {
  display: flex;
  gap: 0.5rem;
}

/* ==========================================================================
   CLIENTS & STRATEGIC PARTNERS SECTION (SCROLL CAROUSEL)
   ========================================================================== */
.section-head-with-actions {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.section-head-left {
  max-width: 820px;
}

.carousel-nav-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.carousel-nav-btn {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-ink-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-tactile);
  box-shadow: var(--shadow-whisper);
}

.carousel-nav-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.carousel-nav-btn:active {
  transform: translateY(0);
}

.partners-scroll-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.partners-scroll-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 0.5rem 0.25rem 1.5rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-hover) transparent;
}

.partners-scroll-track::-webkit-scrollbar {
  height: 6px;
}

.partners-scroll-track::-webkit-scrollbar-track {
  background: transparent;
}

.partners-scroll-track::-webkit-scrollbar-thumb {
  background: var(--color-border-hover);
  border-radius: var(--radius-full);
}

.partner-scroll-card {
  flex: 0 0 420px;
  min-width: 380px;
  max-width: 440px;
  scroll-snap-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-tactile);
  position: relative;
  min-width: 0;
}

.partner-scroll-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.partner-logo-stage {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  height: 6.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-whisper);
  transition: var(--transition-tactile);
}

.partner-scroll-card:hover .partner-logo-stage {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.06);
}

.partner-stage-logo {
  max-height: 3.5rem;
  max-width: 12rem;
  width: auto;
  object-fit: contain;
}

.partner-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.875rem;
  flex-wrap: wrap;
}

.partner-domain-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: var(--transition-tactile);
  flex-shrink: 0;
}

.partner-domain-link:hover {
  background: var(--color-accent);
  color: #ffffff;
}

.partner-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.partner-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-ink-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.partner-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-ink-secondary);
  margin-bottom: 1.25rem;
}

.partner-deliverables {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
}

.partner-deliverable-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.45;
}

/* Cert Logo & Preview Styling */
.cert-logo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.875rem;
}

.cert-logo-img {
  height: 1.75rem;
  width: auto;
  max-width: 6.5rem;
  object-fit: contain;
}

.cert-preview-thumb {
  width: 100%;
  height: 7.5rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 0.75rem 0;
  border: 1px solid var(--color-border-subtle);
  background: #0f172a;
  position: relative;
}

.cert-preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  opacity: 0.92;
  transition: opacity 0.25s ease, transform 0.35s ease;
}

.cert-bento:hover .cert-preview-thumb img {
  opacity: 1;
  transform: scale(1.03);
}

/* Ecosystem / Partner Logo Strip */
.partner-logo-strip {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--color-border-subtle);
  margin-top: 1.5rem;
}

.partner-logo-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-muted);
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.25s ease;
}

.partner-logo-item:hover {
  filter: grayscale(0%);
  opacity: 1;
  color: var(--color-ink-primary);
}

.partner-logo-item img {
  height: 1.35rem;
  width: auto;
}

/* Founder / Legal Profile Card */
.founder-profile-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--color-canvas);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.founder-avatar-img {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 2px solid var(--color-surface);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.founder-info {
  display: flex;
  flex-direction: column;
}

.founder-name {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-ink-primary);
  line-height: 1.2;
}

.founder-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-top: 0.25rem;
}

.founder-meta {
  font-size: 0.75rem;
  color: var(--color-ink-muted);
  margin-top: 0.25rem;
}

/* ==========================================================================
   FINTECH & TRADING PLATFORM / QUANT SERVICES
   ========================================================================== */
.quant-services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.quant-service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-tactile);
  position: relative;
  overflow: hidden;
}

.quant-service-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.quant-service-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 1rem;
  width: fit-content;
}

.quant-service-title {
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-ink-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.quant-service-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-ink-secondary);
  margin-bottom: 1.5rem;
}

.quant-service-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
}

.quant-service-bullet {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.45;
}

.quant-creds-header {
  margin-top: 3.5rem;
  margin-bottom: 1.75rem;
}

/* Credentials Table / Grid */
.quant-credentials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.cert-bento {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-whisper);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-tactile);
}

.cert-bento:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.cert-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.cert-issuer {
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
}

.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.1875rem 0.5rem;
  border-radius: var(--radius-sm);
}

.cert-badge.verified {
  background: var(--color-emerald-subtle);
  color: var(--color-emerald);
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.cert-badge.capital {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
}

.cert-detail {
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
  line-height: 1.55;
  margin-bottom: 0.875rem;
}

.cert-meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  display: flex;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-subtle);
}

/* ==========================================================================
   TRANSFORMATION ROADMAP (4-PHASE PROTOCOL)
   ========================================================================== */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.phase-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  position: relative;
  display: flex;
  flex-direction: column;
}

.phase-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.phase-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.phase-desc {
  font-size: 0.8125rem;
  color: var(--color-ink-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   CORPORATE LEGAL & TAX VERIFICATION (HIGH TRUST BLUEPRINT)
   ========================================================================== */
.corporate-blueprint {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3.25rem);
  box-shadow: var(--shadow-card);
}

.blueprint-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.legal-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-emerald-subtle);
  border: 1px solid rgba(5, 150, 105, 0.25);
  color: var(--color-emerald);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
}

.blueprint-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.legal-entry {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  background: var(--color-canvas);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  position: relative;
}

.legal-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.375rem;
}

.legal-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  line-height: 1.4;
  word-break: break-word;
}

.legal-value.mono {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--color-accent);
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
}

.copy-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.copy-btn.copied {
  color: var(--color-emerald);
  border-color: var(--color-emerald);
}

/* ==========================================================================
   BRAND IDENTITY & BRANDKIT GUIDELINES BOARD
   Standard: @brandkit 3x3 System // The Quantum Terminal Gateway
   ========================================================================== */
.brand-identity-section {
  position: relative;
  overflow: hidden;
}

.brand-identity-section::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 450px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, rgba(37, 99, 235, 0.04) 50%, transparent 75%);
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
}

.brandkit-frame {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lift);
  overflow: hidden;
  position: relative;
  margin-bottom: 2.25rem;
  transition: var(--transition-tactile);
}

.brandkit-frame:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 25px 65px -15px rgba(0, 0, 0, 0.95), 0 0 35px -5px rgba(0, 240, 255, 0.25);
}

.brandkit-frame-header {
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.brandkit-meta-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-secondary);
}

.brandkit-meta-tag {
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
  padding: 0.1875rem 0.5625rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brandkit-meta-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-muted);
}

.brandkit-board-container {
  position: relative;
  width: 100%;
  background: #05080f;
  padding: clamp(0.75rem, 2vw, 1.5rem);
  display: flex;
  justify-content: center;
  align-items: center;
}

.brandkit-board-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.75);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
}

.brandkit-frame:hover .brandkit-board-img {
  transform: scale(1.008);
}

.brandkit-spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.brand-spec-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-tactile);
  display: flex;
  flex-direction: column;
}

.brand-spec-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-lift);
}

.brand-spec-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
}

.brand-spec-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.brand-spec-desc {
  font-size: 0.875rem;
  color: var(--color-ink-secondary);
  line-height: 1.6;
}

.brand-color-swatches {
  display: flex;
  gap: 0.375rem;
  margin-top: 1rem;
}

.color-swatch-chip {
  flex: 1;
  height: 1.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
  transition: transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.5625rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #ffffff;
}

.color-swatch-chip:hover {
  transform: translateY(-2px) scale(1.08);
  z-index: 2;
}

@media (max-width: 1024px) {
  .brandkit-spec-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .brandkit-spec-grid {
    grid-template-columns: 1fr;
  }
  .brandkit-meta-right {
    display: none;
  }
}

/* ==========================================================================
   CONTACT & COLLABORATION MODAL / SECTION
   ========================================================================== */
.contact-banner {
  background: linear-gradient(135deg, #0e172a 0%, #070a12 100%);
  color: var(--color-ink-primary);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 5vw, 4.5rem);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9), 0 0 35px -5px rgba(0, 240, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.contact-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.contact-left h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--color-ink-primary);
  line-height: 1.15;
}

.contact-left p {
  color: var(--color-ink-secondary);
  font-size: 1.0625rem;
  line-height: 1.65;
  max-width: 50ch;
}

.contact-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-info-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: #e2e8f0;
  transition: var(--transition-tactile);
}

.contact-info-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Modal Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 36rem;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  box-shadow: var(--shadow-lift);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.modal-overlay.active .modal-window {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--color-ink-muted);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-tactile);
}

.modal-close-btn:hover {
  color: var(--color-ink-primary);
  background: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   SITE FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-top: 4.5rem;
  padding-bottom: 3.5rem;
  color: var(--color-ink-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}

.footer-brand h3 {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-ink-primary);
  margin-bottom: 0.5rem;
}

.footer-brand p {
  font-size: 0.8125rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
  max-width: 32ch;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-ink-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.8125rem;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-ink-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   RESPONSIVE OVERRIDES (Hard Rule: Test 375px, 768px, 1440px)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .bento-grid {
    grid-template-columns: 1fr;
  }
  
  .bento-row-two {
    grid-template-columns: 1fr;
  }

  .engine-matrix-section {
    grid-template-columns: 1fr;
  }

  .section-head-with-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .partner-scroll-card {
    flex: 0 0 380px;
    min-width: 340px;
  }

  .quant-services-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .roadmap-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hierarchy-columns {
    grid-template-columns: 1fr 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: clamp(1rem, 4vw, 1.5rem);
    padding-right: clamp(1rem, 4vw, 1.5rem);
  }

  .site-header {
    height: auto;
    min-height: 3.75rem;
  }

  .nav-container {
    height: 3.75rem;
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
    gap: 0.5rem;
  }

  .brand-wrapper {
    gap: 0.5rem;
    min-width: 0;
    flex-shrink: 1;
    overflow: hidden;
  }

  .brand-emblem {
    width: 2.125rem;
    height: 2.125rem;
    font-size: 0.875rem;
    flex-shrink: 0;
  }

  .brand-meta {
    min-width: 0;
    overflow: hidden;
  }

  .brand-name {
    font-size: 0.8125rem;
    line-height: 1.15;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .brand-sub {
    font-size: 0.5625rem;
    letter-spacing: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-links, 
  .nav-actions .btn-primary {
    display: none;
  }

  .nav-actions {
    gap: 0.375rem;
    flex-shrink: 0;
  }

  .lang-switcher {
    padding: 0.125rem;
  }

  .lang-btn {
    padding: 0.25rem 0.45rem;
    font-size: 0.6875rem;
  }

  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0.375rem;
  }

  /* Hero Section */
  .hero-section {
    padding-top: 2rem;
    padding-bottom: 2.5rem;
  }

  .hero-grid {
    gap: 2rem;
  }

  .hero-headline {
    font-size: clamp(1.85rem, 6vw, 2.35rem);
    line-height: 1.18;
    letter-spacing: -0.03em;
  }

  .hero-description {
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.625rem;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
  }

  .metric-strip {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding: 0.875rem 0;
    margin-bottom: 1.5rem;
  }

  .metric-number {
    font-size: 1.25rem;
  }

  .metric-label {
    font-size: 0.6875rem;
  }

  .partner-logo-strip {
    gap: 0.75rem 1rem;
    margin-top: 1.25rem;
  }

  .partner-logo-item {
    font-size: 0.6875rem;
    gap: 0.375rem;
  }

  /* Terminal Simulator */
  .terminal-card {
    border-radius: var(--radius-md);
  }

  .terminal-header {
    padding: 0.625rem 0.75rem;
    gap: 0.5rem;
  }

  .terminal-tabs {
    gap: 0.25rem;
  }

  .terminal-tab-btn {
    font-size: 0.625rem;
    padding: 0.2rem 0.45rem;
  }

  .terminal-body {
    padding: 0.875rem;
    font-size: 0.75rem;
    min-height: 15rem;
  }

  .code-line {
    gap: 0.5rem;
  }

  .code-num {
    min-width: 1.25rem;
    font-size: 0.6875rem;
  }

  .terminal-footer {
    padding: 0.625rem 0.75rem;
    font-size: 0.6875rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.375rem;
  }

  /* Bento Cards */
  .bento-card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .card-title {
    font-size: 1.125rem;
  }

  .card-desc {
    font-size: 0.875rem;
  }

  .featured-code-preview {
    padding: 0.75rem;
    font-size: 0.6875rem;
  }

  /* Strategic Partners on Mobile */
  .partners-scroll-track {
    gap: 1rem;
    padding-bottom: 1rem;
  }

  .partner-scroll-card {
    flex: 0 0 85vw;
    min-width: 270px;
    max-width: 340px;
    padding: 1.25rem;
  }

  .partner-logo-stage {
    height: 5.25rem;
    padding: 0.875rem 1.25rem;
    margin-bottom: 1rem;
  }

  .partner-stage-logo {
    max-height: 2.75rem;
    max-width: 9rem;
  }

  .partner-title {
    font-size: 1.125rem;
  }

  .partner-desc {
    font-size: 0.8125rem;
  }

  .quant-service-card {
    padding: 1.25rem;
  }

  .quant-service-title {
    font-size: 1.1875rem;
  }

  .quant-service-desc {
    font-size: 0.875rem;
  }

  /* Studio Hierarchy */
  .studio-hierarchy-board {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .hierarchy-header {
    flex-direction: column;
    gap: 1rem;
  }

  .hierarchy-stats {
    width: 100%;
    justify-content: space-between;
  }

  .hierarchy-columns {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  /* Quant & Credentials */
  .quant-panel {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .quant-credentials-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cert-bento {
    padding: 1.125rem;
  }

  .cert-meta {
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.625rem;
  }

  /* Corporate Legal */
  .corporate-board {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .blueprint-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .legal-entry {
    padding: 1rem;
  }

  .legal-value {
    font-size: 0.875rem;
    word-break: break-word;
  }

  .legal-value.mono {
    font-size: 0.9375rem;
  }

  .founder-profile-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem;
  }

  .founder-avatar-img {
    width: 3.5rem;
    height: 3.5rem;
  }

  /* Contact Banner */
  .contact-banner {
    grid-template-columns: 1fr;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    gap: 1.5rem;
  }

  .contact-left h2 {
    font-size: 1.5rem;
    line-height: 1.2;
  }

  .contact-left p {
    font-size: 0.875rem;
  }

  .contact-info-pill {
    padding: 0.75rem 1rem;
    font-size: 0.8125rem;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .section {
    padding: 2.75rem 0;
  }

  .section-title {
    font-size: 1.65rem;
    line-height: 1.2;
  }

  .section-desc {
    font-size: 0.875rem;
  }

  /* Modal Window */
  .modal-window {
    width: calc(100% - 2rem);
    max-height: 90vh;
    padding: 1.25rem;
    margin: 1rem;
  }
}

@media (max-width: 480px) {
  .site-header {
    min-height: 3.5rem;
  }

  .nav-container {
    height: 3.5rem;
    gap: 0.375rem;
  }

  .brand-emblem {
    width: 2rem;
    height: 2rem;
    font-size: 0.8125rem;
  }

  .brand-name {
    font-size: 0.75rem;
  }

  .brand-sub {
    font-size: 0.5rem;
  }

  .lang-btn {
    padding: 0.2rem 0.375rem;
    font-size: 0.625rem;
  }

  .mobile-nav-toggle {
    width: 2rem;
    height: 2rem;
    padding: 0.25rem;
  }

  .hero-headline {
    font-size: 1.75rem;
  }

  .metric-number {
    font-size: 1.125rem;
  }

  .metric-label {
    font-size: 0.625rem;
  }
}

/* Mobile Nav Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 3.75rem;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem;
  z-index: 999;
  box-shadow: var(--shadow-lift);
}

.mobile-drawer.active {
  display: block;
}

.mobile-drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-drawer-link {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-ink-primary);
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}