/* ============================================
   Fenri 2.0 — Release Site Stylesheet
   ============================================ */

/* === RESET & BASE === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette - Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.4);
  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.4);
  --accent-purple: #8b5cf6;
  --accent-purple-glow: rgba(139, 92, 246, 0.4);
  --accent-orange: #f59e0b;
  --accent-orange-glow: rgba(245, 158, 11, 0.4);
  --accent-teal: #0d9488;
  --accent-teal-glow: rgba(13, 148, 136, 0.4);
  --accent-pink: #ec4899;
  --accent-pink-glow: rgba(236, 72, 153, 0.4);

  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.03), rgba(139, 92, 246, 0.03));

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-hover: rgba(15, 23, 42, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 64px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.2);

  --font-sans: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

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

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  60% { opacity: 1; }
  100% { transform: translateY(20px); opacity: 0; }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes orbMove1 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(100px, -50px); }
  50% { transform: translate(50px, 100px); }
  75% { transform: translate(-80px, 50px); }
}

@keyframes orbMove2 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-70px, 80px); }
  50% { transform: translate(120px, 20px); }
  75% { transform: translate(30px, -100px); }
}

@keyframes orbMove3 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(60px, 60px); }
  50% { transform: translate(-100px, -30px); }
  75% { transform: translate(90px, -70px); }
}

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

[data-animate].animate-visible {
  opacity: 1;
  transform: translateY(0);
}

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 30px rgba(15, 23, 42, 0.08);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
}

.brand-icon {
  font-size: 1.5rem;
}

.brand-ver {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-links a {
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

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

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.hero-orb--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
  top: 10%;
  left: 10%;
  animation: orbMove1 20s ease-in-out infinite;
}

.hero-orb--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
  top: 40%;
  right: 15%;
  animation: orbMove2 25s ease-in-out infinite;
}

.hero-orb--3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-pink) 0%, transparent 70%);
  bottom: 10%;
  left: 30%;
  animation: orbMove3 22s ease-in-out infinite;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at center, rgba(15, 23, 42, 0.04) 2px, transparent 2px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  animation: fadeInUp 1s var(--ease-out-expo);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title-line {
  display: block;
}

.hero-title-gradient {
  display: block;
  background: var(--gradient-primary);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 6s ease infinite;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle strong {
  color: var(--accent-blue);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.3s var(--ease-out-quart);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-blue-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-blue-glow);
}

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

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

.hero-version-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.version-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-blue), transparent);
  border-radius: 2px;
  animation: scrollDown 2s ease-in-out infinite;
}

/* === SECTIONS === */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.section-tag--green {
  background: rgba(6, 214, 160, 0.1);
  border-color: rgba(6, 214, 160, 0.2);
  color: var(--accent-green);
}

.section-tag--purple {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.2);
  color: var(--accent-purple);
}

.section-tag--orange {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--accent-orange);
}

.section-tag--teal {
  background: rgba(20, 184, 166, 0.1);
  border-color: rgba(20, 184, 166, 0.2);
  color: var(--accent-teal);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === FEATURE CARDS === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out-expo);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity 0.4s;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

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

.feature-card--accent1::before { background: var(--accent-blue); }
.feature-card--accent2::before { background: var(--accent-green); }
.feature-card--accent3::before { background: var(--accent-purple); }
.feature-card--accent4::before { background: var(--accent-orange); }
.feature-card--accent5::before { background: var(--accent-teal); }
.feature-card--accent6::before { background: var(--accent-pink); }

.feature-card--accent1:hover { box-shadow: 0 8px 40px var(--accent-blue-glow); }
.feature-card--accent2:hover { box-shadow: 0 8px 40px var(--accent-green-glow); }
.feature-card--accent3:hover { box-shadow: 0 8px 40px var(--accent-purple-glow); }
.feature-card--accent4:hover { box-shadow: 0 8px 40px var(--accent-orange-glow); }
.feature-card--accent5:hover { box-shadow: 0 8px 40px var(--accent-teal-glow); }
.feature-card--accent6:hover { box-shadow: 0 8px 40px var(--accent-pink-glow); }

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* === SHOWCASE === */
.showcase--dark {
  background: var(--bg-secondary);
}

.showcase-layout {
  display: flex;
  flex-direction: column;
  gap: 48px;
  align-items: center;
  max-width: 800px;
  margin: 0 auto;
}

.showcase-text {
  text-align: center;
  width: 100%;
}

.showcase-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  margin-left: auto;
  margin-right: auto;
}

.showcase-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-align: left;
}

.showcase-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.list-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.showcase-list li strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.showcase-list li span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.showcase-image {
  position: relative;
}

.image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  transition: transform 0.5s var(--ease-out-expo);
}

.image-frame:hover {
  transform: scale(1.02);
}

.image-frame--green {
  border-color: rgba(6, 214, 160, 0.15);
}

.image-frame--purple {
  border-color: rgba(139, 92, 246, 0.15);
}

.image-glow {
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle at center, var(--accent-blue-glow) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.image-glow--green {
  background: radial-gradient(circle at center, var(--accent-green-glow) 0%, transparent 60%);
}

.image-glow--purple {
  background: radial-gradient(circle at center, var(--accent-purple-glow) 0%, transparent 60%);
}

/* === INFRA CARDS === */
.infra-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.infra-card {
  padding: 32px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.4s var(--ease-out-expo);
}

.infra-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-orange);
  box-shadow: 0 8px 32px var(--accent-orange-glow);
}

.infra-card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.infra-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.infra-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === ENHANCEMENTS === */
.enhancements {
  background: var(--bg-secondary);
}

.enhancements-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.enhance-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 32px;
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s var(--ease-out-expo);
}

.enhance-item:first-child {
  border-top: 1px solid var(--border-subtle);
}

.enhance-item:hover {
  padding-left: 40px;
  background: rgba(20, 184, 166, 0.03);
}

.enhance-number {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  width: 60px;
  letter-spacing: -2px;
}

.enhance-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.enhance-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* === TIMELINE === */
.timeline-section {
  background: var(--bg-primary);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), var(--accent-pink));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  display: flex;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item--left {
  justify-content: flex-start;
  padding-right: calc(50% + 40px);
}

.timeline-item--right {
  justify-content: flex-end;
  padding-left: calc(50% + 40px);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 24px;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-blue);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 20px var(--accent-blue-glow);
  z-index: 2;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.4s var(--ease-out-expo);
  width: 100%;
}

.timeline-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.timeline-date {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.timeline-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.timeline-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-card li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  opacity: 0.6;
}

/* === STATS === */
.stats {
  background: var(--bg-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 40px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out-expo);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline;
  line-height: 1;
}

.stat-suffix {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 10px;
  font-weight: 500;
}

/* === FOOTER === */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--border-subtle);
}

.footer-content {
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.footer-divider {
  width: 80px;
  height: 2px;
  background: var(--gradient-primary);
  margin: 0 auto 24px;
  border-radius: 2px;
}

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

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

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

  .showcase-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .showcase-layout--reverse {
    direction: ltr;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-subtle);
  }

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

  .nav-links a {
    padding: 12px 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 100px 20px 60px;
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

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

  .section {
    padding: 80px 0;
  }

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

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

  .timeline-line {
    left: 20px;
  }

  .timeline-item--left,
  .timeline-item--right {
    padding-left: 56px;
    padding-right: 0;
    justify-content: flex-start;
  }

  .timeline-dot {
    left: 20px;
  }

  .enhance-item {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .enhance-number {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-card {
    padding: 24px 12px;
  }

  .stat-number {
    font-size: 2.2rem;
  }
}