/* ============================================
   Hyperblock — Main Stylesheet
   ============================================ */

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-bg-dark: #0f1729;
  --color-bg-dark-alt: #162033;
  --color-bg-light: #f7f8fa;
  --color-bg-white: #ffffff;
  --color-text: #1a1a2e;
  --color-text-light: #e0e6ed;
  --color-text-muted: #6b7280;
  --color-text-muted-dark: #94a3b8;
  --color-accent: #0ea5e9;
  --color-accent-hover: #0284c7;
  --color-accent-gradient: linear-gradient(135deg, #0ea5e9, #06b6d4);
  --color-border: #e5e7eb;
  --color-border-dark: #1e3a5f;
  --color-card-bg: #ffffff;
  --color-card-bg-dark: #1a2744;
  --color-code-bg: #1e293b;

  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Menlo, Consolas, monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-light);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Section --- */
.section {
  padding: var(--space-4xl) 0;
}

.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section-dark code {
  background: var(--color-code-bg);
  color: var(--color-accent);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-3xl);
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.section-dark .section-subtitle {
  color: var(--color-text-muted-dark);
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 41, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-dark);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-light);
}

.logo-icon {
  height: 28px;
  width: auto;
}

.logo-text {
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: var(--space-lg);
}

.nav-menu a {
  color: var(--color-text-muted-dark);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-menu a:hover {
  color: var(--color-text-light);
}

.nav-github {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-light);
  position: relative;
  transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-light);
  position: absolute;
  transition: transform 0.3s;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-toggle.active .hamburger {
  background: transparent;
}

.nav-toggle.active .hamburger::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .hamburger::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -25%;
  width: 150%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(14, 165, 233, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

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

.hero-mark img {
  width: 88px;
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 0 24px rgba(14, 165, 233, 0.3));
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted-dark);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  filter: brightness(1.1);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-light);
  border: 1px solid var(--color-border-dark);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-light);
  border-color: var(--color-text-muted-dark);
}

/* ============================================
   Features
   ============================================ */
.features {
  background: var(--color-bg-white);
}

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

.feature-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ============================================
   Architecture
   ============================================ */
.architecture-diagram {
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.architecture-diagram img {
  width: 100%;
  height: auto;
}

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

.component-card {
  background: var(--color-card-bg-dark);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

.component-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.component-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted-dark);
  line-height: 1.5;
}

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
  background: var(--color-bg-white);
}

.flow-section {
  margin-bottom: var(--space-3xl);
}

.flow-section:last-child {
  margin-bottom: 0;
}

.flow-section h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
  text-align: center;
  color: var(--color-text);
}

.flow-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}

.flow-step {
  flex: 1;
  text-align: center;
  max-width: 220px;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--color-accent-gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  margin: 0 auto var(--space-md);
}

.step-content h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.step-content p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.flow-connector {
  width: 40px;
  min-width: 40px;
  height: 2px;
  background: var(--color-border);
  margin-top: 20px;
  flex-shrink: 0;
}

/* ============================================
   TopoHash
   ============================================ */
.topohash {
  background:
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.08), transparent 28%),
    linear-gradient(180deg, #f5f8fb 0%, #eef4f8 100%);
}

.topohash-summary-grid,
.topohash-steps-grid,
.topohash-detail-grid,
.topohash-io-grid {
  display: grid;
  gap: var(--space-lg);
}

.topohash-summary-grid {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: var(--space-2xl);
}

.topohash-card,
.topohash-diagram-card,
.topohash-step-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(15, 23, 41, 0.08);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 16px 40px rgba(15, 23, 41, 0.06);
}

.topohash-card,
.topohash-step-card {
  padding: var(--space-xl);
}

.topohash-kicker,
.diagram-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.topohash-card h3,
.topohash-step-card h3,
.topohash-diagram-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.topohash-card p,
.topohash-step-card p,
.diagram-caption,
.mode-card p,
.mapping-detail p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.topohash-diagram-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.topohash-diagram-card {
  padding: var(--space-xl);
}

.topohash-selection-diagram,
.topohash-block-diagram {
  display: grid;
  gap: var(--space-lg);
}

.topohash-selection-diagram {
  grid-template-columns: 1.05fr 1.35fr 1fr;
  align-items: start;
}

.diagram-sidebar,
.diagram-topology,
.diagram-results,
.mapping-detail,
.mode-card {
  background: rgba(247, 248, 250, 0.85);
  border: 1px solid rgba(15, 23, 41, 0.08);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

.diagram-signal + .diagram-signal {
  margin-top: var(--space-md);
}

.diagram-signal code,
.diagram-signal span:last-child {
  display: block;
  font-size: 0.88rem;
  line-height: 1.5;
}

.diagram-stage-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.topology-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.topology-domain {
  border: 1px solid rgba(15, 23, 41, 0.08);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  background: #fff;
}

.topology-domain.highlight {
  border-color: rgba(14, 165, 233, 0.35);
  box-shadow: inset 0 0 0 1px rgba(14, 165, 233, 0.08);
}

.domain-name {
  display: inline-block;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.brick-row,
.selected-bricks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.brick-row span,
.selected-bricks span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: #e8f0f7;
  color: #0f1729;
}

.selected-bricks span {
  background: rgba(14, 165, 233, 0.12);
  color: #075985;
}

.selected-bricks span.fallback {
  background: rgba(15, 23, 41, 0.09);
  color: var(--color-text);
}

.mapping-pipeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-sm);
  align-items: center;
}

.mapping-step {
  text-align: center;
  padding: 0.7rem 0.8rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(14, 165, 233, 0.18);
  background: rgba(14, 165, 233, 0.08);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.88rem;
}

.mapping-arrow {
  position: relative;
  height: 2px;
  background: rgba(15, 23, 41, 0.16);
}

.mapping-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  width: 10px;
  height: 10px;
  border-top: 2px solid rgba(15, 23, 41, 0.16);
  border-right: 2px solid rgba(15, 23, 41, 0.16);
  transform: rotate(45deg);
}

.chunk-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-sm);
}

.chunk-segment {
  display: block;
  padding: 0.7rem 0.75rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(15, 23, 41, 0.08);
  background: #fff;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
}

.chunk-segment.active {
  border-color: rgba(14, 165, 233, 0.35);
  background: rgba(14, 165, 233, 0.1);
  color: #075985;
}

.mapping-detail-grid,
.mode-grid,
.topohash-detail-grid,
.topohash-io-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mapping-detail-grid,
.mode-grid {
  display: grid;
  gap: var(--space-lg);
}

.mode-card pre,
.detail-card pre {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  background: #10233a;
  color: #dbeafe;
  overflow-x: auto;
}

.topohash-steps-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: var(--space-2xl);
}

.topohash-step-card {
  position: relative;
  overflow: hidden;
}

.topohash-step-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent-gradient);
}

.step-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(14, 165, 233, 0.12);
  color: #0369a1;
  font-weight: 800;
  margin-bottom: var(--space-md);
}

.topohash-list {
  list-style: disc;
  padding-left: 1.2rem;
  color: var(--color-text-muted);
}

.topohash-list li + li {
  margin-top: var(--space-sm);
}

.topohash-ordered {
  padding-left: 1.2rem;
  color: var(--color-text-muted);
}

.topohash-ordered li + li {
  margin-top: var(--space-sm);
}

/* ============================================
   EC Comparison Table
   ============================================ */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--space-lg);
}

.ec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.ec-table th,
.ec-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border-dark);
}

.ec-table th {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ec-table td {
  color: var(--color-text-light);
}

.ec-table tbody tr:hover {
  background: rgba(14, 165, 233, 0.05);
}

.ec-table code {
  background: var(--color-code-bg);
  color: var(--color-accent);
  padding: 0.2em 0.5em;
  border-radius: 4px;
  font-size: 0.85rem;
}

.table-note {
  text-align: center;
  color: var(--color-text-muted-dark);
  font-size: 0.9rem;
}

/* ============================================
   Tech Stack
   ============================================ */
.tech-stack {
  background: var(--color-bg-light);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.tech-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.tech-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.tech-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.tech-detail {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================
   Quick Start
   ============================================ */
.quickstart-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-2xl);
  max-width: 800px;
  margin: 0 auto;
}

.quickstart-step h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

.quickstart-step .highlight {
  border-radius: var(--border-radius);
  overflow: hidden;
}

.quickstart-step .highlight pre {
  padding: var(--space-lg);
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-muted-dark);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-logo img {
  height: 22px;
  width: auto;
}

.footer-logo span {
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-muted-dark);
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding-top: var(--space-xl);
  text-align: center;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--color-text-muted-dark);
}

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

/* ============================================
   Responsive — Tablet (768px)
   ============================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .topohash-diagram-grid,
  .topohash-steps-grid,
  .topohash-selection-diagram {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --space-4xl: 3.5rem;
  }

  /* Mobile nav */
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 41, 0.98);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border-dark);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    font-size: 1rem;
    padding: var(--space-sm) 0;
  }

  /* Hero */
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
  }

  /* Architecture */
  .component-grid {
    grid-template-columns: 1fr;
  }

  /* TopoHash */
  .topohash-summary-grid,
  .mapping-detail-grid,
  .mode-grid,
  .topohash-detail-grid,
  .topohash-io-grid,
  .topohash-steps-grid {
    grid-template-columns: 1fr;
  }

  .mapping-pipeline {
    grid-template-columns: 1fr;
  }

  .mapping-arrow {
    width: 2px;
    height: 18px;
    margin: 0 auto;
  }

  .mapping-arrow::after {
    right: -4px;
    top: auto;
    bottom: -1px;
    transform: rotate(135deg);
  }

  .chunk-strip,
  .topology-grid {
    grid-template-columns: 1fr;
  }

  /* How It Works */
  .flow-steps {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }

  .flow-step {
    max-width: 100%;
    display: flex;
    gap: var(--space-md);
    text-align: left;
  }

  .step-number {
    flex-shrink: 0;
    margin: 0;
  }

  .flow-connector {
    width: 2px;
    height: 20px;
    min-width: 2px;
    margin: 0;
    margin-left: 19px;
  }

  /* Tech stack */
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: auto;
  }

  .section-title {
    font-size: 1.6rem;
  }
}

@media (max-width: 380px) {
  .hero-title {
    font-size: 1.65rem;
  }

  .btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}