/* ===== CSS Custom Properties ===== */
:root {
  /* Colors */
  --color-primary: #4f46e5;
  --color-primary-light: #6366f1;
  --color-primary-dark: #4338ca;
  --color-accent: #0891b2;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f8fafc;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-glow: rgba(79, 70, 229, 0.5);
  --color-glow-cyan: rgba(8, 145, 178, 0.5);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --leading-tight: 1.25;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;
  --tracking-tight: -0.02em;
  --tracking-wide: 0.02em;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 120px;

  /* Layout */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --content-width: 800px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

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

.container-narrow {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* ===== Scroll Progress Bar ===== */
#scrollProgress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary-light), var(--color-accent));
  background-size: 300% 100%;
  animation: progressShimmer 2.5s linear infinite;
  z-index: 1001;
  width: 0%;
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 12px rgba(79, 70, 229, 0.5), 0 0 6px rgba(8, 145, 178, 0.3);
  transition: width 0.15s linear;
  pointer-events: none;
}
@keyframes progressShimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* ===== Mouse Glow Follower ===== */
#mouseGlow {
  position: fixed; pointer-events: none; z-index: 9999;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.06) 0%, rgba(8, 145, 178, 0.03) 30%, transparent 70%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
#mouseGlow.active { opacity: 1; }

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(248, 250, 252, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: background var(--transition);
}

.nav-content {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: var(--text-lg); font-weight: 700; color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

.logo-img { width: 32px; height: 32px; border-radius: 6px; animation: logoGlow 4s ease-in-out infinite; }

@keyframes logoGlow {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(79, 70, 229, 0)); }
  50% { filter: drop-shadow(0 0 6px rgba(79, 70, 229, 0.25)); }
}

.nav-links { display: flex; gap: 32px; }

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.3s ease;
  box-shadow: 0 0 8px var(--color-glow);
}
.nav-links a:hover { color: var(--color-text); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  background: var(--color-bg-card); color: var(--color-text-secondary);
  border: 1px solid var(--color-border); border-radius: 6px;
  padding: 4px 12px; font-size: 0.85rem; cursor: pointer;
  transition: all var(--transition);
}
.lang-toggle:hover { color: var(--color-text); border-color: var(--color-primary); }

.mobile-menu-btn {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.mobile-menu-btn span {
  display: block; width: 22px; height: 2px;
  background: var(--color-text-secondary); border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding-top: var(--nav-height); overflow: hidden;
}

.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(79, 70, 229, 0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(8, 145, 178, 0.05), transparent),
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(79, 70, 229, 0.05), transparent);
}

@keyframes heroFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.1); }
  66% { transform: translate(-15px, 10px) scale(0.95); }
}
@keyframes heroFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-25px, -15px) scale(1.08); }
  66% { transform: translate(20px, 15px) scale(0.92); }
}

.hero-bg::before,
.hero-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero-bg::before {
  width: 320px; height: 320px;
  background: rgba(79, 70, 229, 0.12);
  top: 5%; left: 8%;
  animation: heroFloat1 10s ease-in-out infinite;
}

.hero-bg::after {
  width: 260px; height: 260px;
  background: rgba(8, 145, 178, 0.1);
  bottom: 15%; right: 10%;
  animation: heroFloat2 9s ease-in-out infinite;
  animation-delay: -3s;
}

/* Parallax layer - subtle horizontal drift */
@keyframes heroParallax {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(20px); }
}
.hero-bg .parallax-layer {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 40% 30% at 70% 30%, rgba(79, 70, 229, 0.04), transparent),
              radial-gradient(ellipse 30% 25% at 25% 65%, rgba(8, 145, 178, 0.04), transparent);
  animation: heroParallax 14s ease-in-out infinite;
  pointer-events: none;
}


@keyframes particleFloat {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
  10% { opacity: 0.7; }
  90% { opacity: 0.7; }
  100% { transform: translateY(-100vh) translateX(40px); opacity: 0; }
}
@keyframes particleFloat2 {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
  10% { opacity: 0.5; }
  90% { opacity: 0.5; }
  100% { transform: translateY(-100vh) translateX(-30px); opacity: 0; }
}
.hero-bg .particle {
  position: absolute;
  width: 3px; height: 3px;
  background: var(--color-primary-light);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-glow);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative; text-align: center;
  padding: 100px 0 80px;
  max-width: 960px; margin: 0 auto;
}

.badges {
  display: flex; gap: var(--space-sm); justify-content: center;
  flex-wrap: wrap; margin-bottom: 40px;
}

.badges img { height: 24px; }

.hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 900; line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, var(--text-xl));
  color: var(--color-text-secondary);
  max-width: 760px; margin: 0 auto 40px;
  line-height: var(--leading-relaxed);
  font-weight: 400;
}

.hero-actions {
  display: flex; gap: var(--space-md); justify-content: center;
  flex-wrap: wrap; margin-bottom: 20px;
}

.hero-demo-hint {
  font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 12px;
  font-weight: 400; letter-spacing: var(--tracking-wide);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-sm);
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-size: var(--text-base); font-weight: 600; cursor: pointer;
  border: none; transition: all var(--transition);
  font-family: var(--font-sans);
  letter-spacing: var(--tracking-tight);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(79, 70, 229, 0.35); }

.btn-outline {
  background: transparent; color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover { background: rgba(79, 70, 229, 0.08); transform: translateY(-2px); }

.btn-ghost {
  background: rgba(0, 0, 0, 0.03); color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { background: rgba(0, 0, 0, 0.06); }

.btn-lg { padding: 16px 40px; font-size: var(--text-lg); }

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

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, 2.75rem);
  font-weight: 800; text-align: center; margin-bottom: 16px;
  position: relative;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}
.section-title::after {
  content: '';
  position: absolute; bottom: -8px; left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 64px; height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  box-shadow: 0 0 10px var(--color-glow);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.section-title.visible::after {
  transform: translateX(-50%) scaleX(1);
}

.section-desc {
  text-align: center; color: var(--color-text-secondary);
  font-size: var(--text-lg); max-width: 640px; margin: 0 auto 72px;
  line-height: var(--leading-relaxed);
  font-weight: 400;
}

.section-title, .section-desc {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.section-title.visible, .section-desc.visible {
  opacity: 1; transform: translateY(0);
}

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: all var(--transition);
  opacity: 0; transform: translateY(30px);
  position: relative;
  z-index: 1;
  overflow: hidden;
}

/* Feature card glow border scan on hover */
.feature-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent 35%, rgba(79, 70, 229, 0.5), rgba(8, 145, 178, 0.5), transparent 65%);
  background-size: 300% 300%;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.feature-card:hover::before {
  opacity: 1;
  animation: borderGlowTravel 3s linear infinite;
}
@keyframes borderGlowTravel {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Feature card inner light scan */
.feature-card::after {
  content: '';
  position: absolute;
  top: -60%; left: -60%;
  width: 220%; height: 220%;
  background: radial-gradient(ellipse at center, rgba(79, 70, 229, 0.08) 0%, transparent 55%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.feature-card:hover::after {
  opacity: 1;
  animation: cardLightScan 4s ease-in-out infinite;
}
@keyframes cardLightScan {
  0%, 100% { transform: translate(-20%, -20%); }
  50% { transform: translate(20%, 20%); }
}

/* Ensure card content stays above pseudo elements */
.feature-card > * { position: relative; z-index: 1; }
.feature-card.visible { opacity: 1; transform: translateY(0); }

.feature-card:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(79, 70, 229, 0.15), 0 0 80px rgba(79, 70, 229, 0.05);
}

/* Icon pulse ring on hover */
.feature-icon {
  position: relative;
}
.feature-icon::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 18px;
  border: 2px solid currentColor;
  opacity: 0;
  animation: iconPulseRing 2s ease-out infinite;
}
.feature-card:hover .feature-icon::after {
  opacity: 0.4;
}
@keyframes iconPulseRing {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.4); opacity: 0; }
}

.feature-card:hover .feature-icon {
  transform: scale(1.08);
}

.feature-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  transition: transform 0.3s ease;
}

.feature-icon svg { width: 28px; height: 28px; transition: transform 0.3s ease; }

.feature-card:hover .feature-icon svg {
  transform: scale(1.15);
}

.routes-icon { background: rgba(79, 70, 229, 0.1); color: var(--color-primary); }
.register-icon { background: rgba(22, 163, 74, 0.1); color: var(--color-success); }
.ip-icon { background: rgba(8, 145, 178, 0.1); color: var(--color-accent); }
.dashboard-icon { background: rgba(234, 88, 12, 0.1); color: #ea580c; }
.auth-icon { background: rgba(219, 39, 119, 0.1); color: #db2777; }
.config-icon { background: rgba(202, 138, 4, 0.1); color: #ca8a04; }
.waf-icon { background: rgba(220, 38, 38, 0.1); color: #dc2626; }
.notify-icon { background: rgba(147, 51, 234, 0.1); color: #9333ea; }
.health-icon { background: rgba(22, 163, 74, 0.1); color: var(--color-success); }

.feature-card h3 {
  font-size: var(--text-lg); font-weight: 700; margin-bottom: 10px;
  letter-spacing: var(--tracking-tight);
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ===== Preview ===== */
.preview {
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.2), rgba(241, 245, 249, 1)),
    radial-gradient(ellipse 62% 42% at 50% 0%, rgba(79, 70, 229, 0.08), transparent),
    var(--color-bg-alt);
  overflow: hidden;
}

.preview-tabs {
  display: flex; gap: var(--space-sm); justify-content: center;
  flex-wrap: wrap; margin-bottom: 36px;
  position: relative;
  z-index: 2;
}

.preview-tab {
  padding: 10px 22px; border-radius: 999px;
  background: #fff; border: 1px solid var(--color-border);
  color: var(--color-text-secondary); font-size: var(--text-sm); font-weight: 650;
  cursor: pointer; transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease;
  font-family: var(--font-sans);
}
.preview-tab:hover {
  color: var(--color-text);
  border-color: rgba(79, 70, 229, 0.32);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}
.preview-tab.active {
  background: #111827;
  color: #fff;
  border-color: #111827;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.18);
}

.preview-showcase {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1.45fr);
  align-items: center;
  gap: clamp(18px, 3vw, 42px);
  max-width: 1220px;
  margin: 0 auto;
  position: relative;
  isolation: isolate;
}

.preview-showcase::before {
  content: '';
  position: absolute;
  inset: -40px -70px;
  z-index: -1;
  background:
    radial-gradient(ellipse 48% 56% at 72% 50%, rgba(79, 70, 229, 0.14), transparent 68%),
    radial-gradient(ellipse 38% 44% at 24% 45%, rgba(8, 145, 178, 0.1), transparent 68%);
  pointer-events: none;
}

.preview-showcase.image-left {
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.78fr);
}

.preview-showcase.image-left .preview-copy-panel { order: 2; }
.preview-showcase.image-left .preview-stage { order: 1; }
.preview-showcase.image-right .preview-copy-panel { order: 1; }
.preview-showcase.image-right .preview-stage { order: 2; }

.preview-copy-panel {
  min-width: 0;
  position: relative;
  z-index: 3;
}

.preview-showcase.image-left .preview-copy-panel {
  margin-left: -8px;
}

.preview-showcase.image-right .preview-copy-panel {
  margin-right: -8px;
}

.preview-copy {
  min-height: 260px;
  position: relative;
  display: flex;
  align-items: center;
}

.preview-copy-item {
  display: none;
  text-align: left;
  padding: 12px 0;
  position: relative;
}

.preview-copy-item::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 18px;
  width: 2px;
  height: 64px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  opacity: 0.55;
}

.preview-copy-item.active {
  display: block;
  animation: previewCopyIn 0.28s ease-out both;
}

@keyframes previewCopyIn {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

.preview-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preview-kicker::before {
  content: '';
  width: 28px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.preview-copy-item h3 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 850;
  margin-bottom: 16px;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  background: linear-gradient(135deg, var(--color-text), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.preview-copy-item p {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  max-width: 520px;
  margin: 0;
  text-wrap: pretty;
}

.preview-stage {
  position: relative;
  min-width: 0;
  padding: 0;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.preview-showcase.image-left .preview-stage {
  transform: perspective(1400px) rotateY(1.5deg) translateX(-10px);
}

.preview-showcase.image-right .preview-stage {
  transform: perspective(1400px) rotateY(-1.5deg) translateX(10px);
}

.preview-orb { display: none; }

.preview-container {
  position: relative;
  overflow: visible;
  background: transparent;
  aspect-ratio: 16 / 9;
  width: 100%; margin: 0 auto;
  z-index: 2;
  transform: translateZ(0);
}

.preview-container::before {
  content: '';
  position: absolute;
  inset: -18px;
  pointer-events: none;
  z-index: 0;
  border-radius: 30px;
  background: radial-gradient(ellipse at center, rgba(79, 70, 229, 0.18), transparent 62%);
  filter: blur(24px);
  opacity: 0.7;
}

.preview-item {
  position: absolute; inset: 0;
  opacity: 0;
  transform: translate3d(0, 8px, 0) scale(0.985);
  transition: opacity 0.28s ease-out, transform 0.28s ease-out;
  display: flex; align-items: center; justify-content: center;
  will-change: opacity, transform;
  z-index: 1;
}
.preview-item.active {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  z-index: 2;
}
.preview-item img {
  width: 100%; height: 100%; object-fit: contain;
  filter: saturate(1.02) contrast(1.01) drop-shadow(0 26px 48px rgba(15, 23, 42, 0.18));
  border-radius: 20px;
  -webkit-mask-image: radial-gradient(ellipse 92% 88% at 50% 50%, #000 72%, rgba(0,0,0,0.78) 84%, transparent 100%);
  mask-image: radial-gradient(ellipse 92% 88% at 50% 50%, #000 72%, rgba(0,0,0,0.78) 84%, transparent 100%);
}

/* ===== Quick Start ===== */
.steps { max-width: 820px; margin: 0 auto; }

.step {
  display: flex; gap: var(--space-lg); margin-bottom: var(--space-3xl);
  position: relative;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.step:last-child { margin-bottom: 0; }
.step.visible { opacity: 1; transform: translateY(0); }

.step:not(:last-child)::after {
  content: '';
  position: absolute; left: 23px; top: 52px; bottom: -36px;
  width: 2px; background: var(--color-border);
}

.step-number {
  flex-shrink: 0;
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; font-size: var(--text-lg); font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans);
}

@keyframes numberPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.35); }
  50% { box-shadow: 0 0 0 10px rgba(79, 70, 229, 0); }
}
.step.visible .step-number {
  animation: numberPulse 2.5s ease-in-out infinite;
}

.step-content { flex: 1; min-width: 0; }
.step-content h3 {
  font-size: var(--text-xl); font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: var(--tracking-tight);
}
.step-content p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: 24px;
}

.code-block {
  background: #1e293b; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); overflow: hidden;
  margin-bottom: 20px;
}

.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; background: rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.code-header span {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.copy-btn {
  background: none; border: none; color: var(--color-text-muted);
  font-size: var(--text-xs); cursor: pointer; padding: 4px 12px;
  border-radius: 4px; transition: all var(--transition);
  font-family: var(--font-sans);
}
.copy-btn:hover { color: #e2e8f0; background: rgba(255,255,255,0.08); }
.copy-btn.copied { color: var(--color-success); }

.code-block pre {
  padding: 20px; overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  tab-size: 2;
}

.code-block code { color: #e6edf3; }

/* Architecture Diagram */
.arch-diagram {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; flex-wrap: wrap; margin-top: 32px;
  padding: 40px 32px; background: var(--color-bg-card);
  border-radius: var(--radius); border: 1px solid var(--color-border);
  opacity: 0; transform: scale(0.92);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.arch-diagram.visible { opacity: 1; transform: scale(1); }

.arch-node {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 24px 32px; border-radius: var(--radius);
  border: 1px solid var(--color-border); text-align: center;
  min-width: 150px;
  font-weight: 600; font-size: var(--text-sm);
}
.arch-node small { color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 400; }

.arch-node.client { background: rgba(8, 145, 178, 0.06); border-color: rgba(8, 145, 178, 0.2); }
.arch-node.gateway { background: rgba(79, 70, 229, 0.06); border-color: rgba(79, 70, 229, 0.2); }
.arch-node.services { background: rgba(22, 163, 74, 0.06); border-color: rgba(22, 163, 74, 0.2); }

.arch-node.gateway {
  animation: gatewayGlow 3s ease-in-out infinite;
}
@keyframes gatewayGlow {
  0%, 100% { box-shadow: 0 0 0 rgba(79, 70, 229, 0); }
  50% { box-shadow: 0 0 24px rgba(79, 70, 229, 0.15); }
}

.arch-arrow {
  font-size: var(--text-2xl); color: var(--color-text-muted); font-weight: 300;
  transition: all var(--transition);
}
.arch-diagram.visible .arch-arrow {
  animation: arrowDataFlow 2s ease-in-out infinite;
}
@keyframes arrowDataFlow {
  0%, 100% { color: var(--color-text-muted); transform: scale(1); }
  50% { color: var(--color-primary-light); transform: scale(1.15); text-shadow: 0 0 8px var(--color-glow); }
}

/* ===== Scenarios ===== */
.scenarios { background: var(--color-bg); }

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

.scenario-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 26px;
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  position: relative;
  opacity: 0;
  transform: translateY(24px);
  transition: all var(--transition);
}

.scenario-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.scenario-card::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-right: 10px;
  border-radius: 50%;
  background: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
  font-weight: 800;
}

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

.scenario-card.visible:hover {
  transform: translateY(-4px);
}

/* ===== Production Capabilities ===== */
.production { background: var(--color-bg); }

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

.production-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  opacity: 0;
  transform: translateY(28px);
  transition: all var(--transition);
}

.production-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.production-card:hover {
  border-color: rgba(79, 70, 229, 0.45);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.production-card.visible:hover {
  transform: translateY(-5px);
}

.production-card > span {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.production-card h3 {
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: 18px;
}

.production-card ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.production-card li {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  padding-left: 20px;
  position: relative;
}

.production-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

/* ===== Packages ===== */
.packages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.package-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
  opacity: 0; transform: translateY(30px);
  z-index: 1;
}

/* Package card glow border scan */
.package-card::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent 35%, rgba(79, 70, 229, 0.4), rgba(8, 145, 178, 0.4), transparent 65%);
  background-size: 300% 300%;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.package-card:hover::after {
  opacity: 1;
  animation: borderGlowTravel 3s linear infinite;
}
.package-card > * { position: relative; z-index: 1; }
.package-card.visible {
  opacity: 1; transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.package-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
}

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

.package-card.core::before { background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary)); background-size: 200% 100%; animation: barFlow 3s ease infinite; }
.package-card.client::before { background: linear-gradient(90deg, var(--color-success), #34d399, var(--color-success)); background-size: 200% 100%; animation: barFlow 3s ease infinite; }
.package-card.dashboard::before { background: linear-gradient(90deg, #ea580c, #f97316, #ea580c); background-size: 200% 100%; animation: barFlow 3s ease infinite; }

.package-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.package-card.visible:hover { transform: translateY(-6px); }

.package-badge {
  display: inline-block;
  padding: 4px 14px; border-radius: 20px;
  font-size: var(--text-xs); font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 20px;
  font-family: var(--font-sans);
}

.core .package-badge { background: rgba(79, 70, 229, 0.1); color: var(--color-primary); }
.client .package-badge { background: rgba(22, 163, 74, 0.1); color: var(--color-success); }
.dashboard .package-badge { background: rgba(234, 88, 12, 0.1); color: #ea580c; }

.package-card h3 {
  font-size: var(--text-xl); font-weight: 700; margin-bottom: 14px;
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-tight);
}

.package-card p {
  color: var(--color-text-secondary); font-size: var(--text-sm);
  margin-bottom: 24px; line-height: var(--leading-relaxed);
}

.package-install {
  background: var(--color-bg-alt); border-radius: 6px;
  padding: 12px 16px; margin-bottom: 20px;
}
.package-install code {
  font-size: var(--text-sm); color: var(--color-accent);
  font-family: var(--font-mono);
}

.package-links a {
  font-size: var(--text-sm); font-weight: 600;
}

/* ===== Pipeline ===== */
.pipeline { background: var(--color-bg-alt); }

.pipeline-flow {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 0; max-width: 1040px; margin: 0 auto;
}

.pipeline-step {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 20px 24px; background: var(--color-bg-card);
  border-radius: var(--radius); border: 1px solid var(--color-border);
  min-width: 100px; text-align: center; font-size: var(--text-sm); font-weight: 500;
  transition: all var(--transition);
  opacity: 0; transform: translateY(30px);
}

.pipeline-step.visible {
  opacity: 1; transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.pipeline-step:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow), 0 0 24px rgba(79, 70, 229, 0.12); }

.pipeline-step.highlight {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(8, 145, 178, 0.06));
  border-color: var(--color-primary);
  font-weight: 700;
  position: relative;
  overflow: hidden;
}
.pipeline-step.highlight::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(79, 70, 229, 0.06) 50%, transparent 60%);
  background-size: 200% 200%;
  animation: highlightScan 3s ease-in-out infinite;
  pointer-events: none;
}
@keyframes highlightScan {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.pipe-icon { font-size: 1.6rem; line-height: 1; }

.pipeline-arrow {
  font-size: var(--text-lg); color: var(--color-text-muted);
  margin: 0 2px; z-index: 1; font-weight: 300;
  opacity: 0; transition: opacity 0.4s ease;
  position: relative;
}
.pipeline-arrow.visible { opacity: 1; animation: arrowPulse 2s ease-in-out infinite; }
@keyframes arrowPulse {
  0%, 100% { color: var(--color-text-muted); text-shadow: none; }
  50% { color: var(--color-primary-light); text-shadow: 0 0 8px var(--color-glow); }
}

@media (max-width: 920px) {
  .pipeline-flow { flex-direction: column; gap: 0; }
  .pipeline-arrow { transform: rotate(90deg); margin: -6px 0; }
  .pipeline-step { width: 100%; max-width: 280px; }
}

/* ===== Why Choose ===== */
.why-section {
  background:
    radial-gradient(ellipse 70% 45% at 50% 0%, rgba(79, 70, 229, 0.08), transparent),
    var(--color-bg);
}

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

.why-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(30px);
}

.why-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

.why-card.featured {
  border-color: rgba(79, 70, 229, 0.45);
  box-shadow: 0 16px 48px rgba(79, 70, 229, 0.12);
}

.why-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.why-card.visible:hover {
  transform: translateY(-6px);
}

.why-tag {
  display: inline-flex;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.why-card h3 {
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: var(--tracking-tight);
}

.why-card p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: 22px;
}

.why-card ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

.why-card li {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  padding-left: 24px;
  position: relative;
}

.why-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 800;
}

.why-contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding: 28px 32px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(8, 145, 178, 0.06));
  border: 1px solid rgba(79, 70, 229, 0.16);
  border-radius: var(--radius);
}

.open-source-actions {
  display: grid;
  gap: 10px;
  min-width: 360px;
}

.open-source-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(226, 232, 240, 0.7);
}

.open-source-action-row span {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
}

.open-source-action-row div {
  display: flex;
  align-items: center;
  gap: 8px;
}

.open-source-action-row a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 68px;
  padding: 7px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 700;
}

.open-source-action-row a:hover {
  color: var(--color-primary);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.1);
}

.why-contact strong {
  display: block;
  font-size: var(--text-lg);
  margin-bottom: 4px;
}

.why-contact span {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

/* ===== Compare ===== */
.compare { background: var(--color-bg-alt); }

.compare-table-wrapper {
  max-width: 960px;
  margin: 0 auto;
  overflow-x: auto;
  overflow-y: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-card);
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.compare-table th,
.compare-table td {
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: var(--text-sm);
}

.compare-table th {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(8, 145, 178, 0.05));
  color: var(--color-text);
  font-weight: 800;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table td:nth-child(3) {
  color: var(--color-primary);
  font-weight: 700;
}

.compare-table tr {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease, background var(--transition);
}

.compare-table tr.visible {
  opacity: 1;
  transform: translateY(0);
}

.compare-table tbody tr:hover {
  background: var(--color-bg-card-hover);
}

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

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md); max-width: 820px; margin: 0 auto;
}

.tech-item {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
  transition: all var(--transition);
  opacity: 0; transform: translateX(-20px);
}
.tech-item.visible {
  opacity: 1; transform: translateX(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.tech-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow), 0 0 18px rgba(79, 70, 229, 0.08); }

.tech-item strong {
  font-weight: 600; color: var(--color-text);
  font-size: var(--text-sm);
}
.tech-item span {
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
}

/* ===== Adoption Flow ===== */
.adoption { background: var(--color-bg-alt); }

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

.adoption-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 18px;
  opacity: 0;
  transform: translateY(28px);
  transition: all var(--transition);
}

.adoption-card.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.adoption-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.35);
}

.adoption-card.visible:hover {
  transform: translateY(-5px);
}

.adoption-card header {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.adoption-stage {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.adoption-card h3 {
  font-size: var(--text-xl);
  font-weight: 850;
  letter-spacing: var(--tracking-tight);
}

.adoption-card header p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.adoption-card ul {
  list-style: none;
  display: grid;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.adoption-card li {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  padding-left: 22px;
  position: relative;
}

.adoption-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

/* ===== Open Source Info ===== */
.open-info { background: var(--color-bg); }

.open-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 960px;
  margin: 0 auto;
}

.open-info-grid a,
.open-info-grid div {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.open-info-grid a:hover {
  border-color: rgba(79, 70, 229, 0.45);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.open-info-grid strong {
  color: var(--color-text);
  font-size: var(--text-base);
  font-weight: 800;
}

.open-info-grid span {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

/* ===== FAQ ===== */
.faq { background: var(--color-bg); }

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-md);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  opacity: 0;
  transform: translateY(24px);
  transition: all var(--transition);
}

.faq-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.faq-item.visible:hover {
  transform: translateY(-3px);
}

.faq-item h3 {
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: var(--tracking-tight);
}

.faq-item p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.06), rgba(8, 145, 178, 0.04));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-content { text-align: center; }
.cta-content h2 {
  font-size: clamp(var(--text-3xl), 4vw, 2.5rem);
  font-weight: 800; margin-bottom: 16px;
  letter-spacing: var(--tracking-tight);
}
.cta-content p {
  color: var(--color-text-secondary);
  font-size: var(--text-lg); margin-bottom: 40px;
  line-height: var(--leading-relaxed);
}
.cta-actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* CTA primary button shimmer */
.cta-actions .btn-primary {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-dark));
  background-size: 200% auto;
  animation: btnShimmer 4s linear infinite;
}

@keyframes btnShimmer {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ===== Footer ===== */
.footer {
  padding: 56px 0 36px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.footer-content {
  display: flex; flex-direction: column; align-items: center; gap: 28px;
}

.footer-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: var(--text-lg); font-weight: 700;
  letter-spacing: var(--tracking-tight);
}

.footer-logo { width: 28px; height: 28px; border-radius: 5px; }

.footer-links {
  display: flex; gap: 32px; flex-wrap: wrap; justify-content: center;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm); font-weight: 500;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-primary); }

.footer-copy {
  display: flex; gap: 28px; color: var(--color-text-muted);
  font-size: var(--text-xs);
  flex-wrap: wrap; justify-content: center;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-content > * {
  opacity: 0; animation: fadeInUp 0.6s ease forwards;
}
.hero-content > :nth-child(1) { animation-delay: 0.1s; }
.hero-content > :nth-child(2) { animation-delay: 0.2s; }
.hero-content > :nth-child(3) { animation-delay: 0.3s; }
.hero-content > :nth-child(4) { animation-delay: 0.4s; }
.hero-content > :nth-child(5) { animation-delay: 0.5s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .production-grid { grid-template-columns: repeat(2, 1fr); }
  .adoption-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .packages-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: var(--nav-height); left: 0; right: 0;
    background: rgba(248, 250, 252, 0.98);
    backdrop-filter: blur(12px);
    padding: 20px 24px; gap: 18px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  }
  .mobile-menu-btn { display: flex; }
  .features-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .production-grid,
  .open-info-grid,
  .adoption-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .preview-showcase,
  .preview-showcase.image-left,
  .preview-showcase.image-right { grid-template-columns: 1fr; }
  .preview-showcase.image-left .preview-copy-panel,
  .preview-showcase.image-right .preview-copy-panel { order: 1; }
  .preview-showcase.image-left .preview-stage,
  .preview-showcase.image-right .preview-stage { order: 2; transform: none; }
  .preview-copy { min-height: 0; }
  .scenario-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .packages-grid { max-width: 480px; margin: 0 auto; }
  .why-contact { flex-direction: column; align-items: flex-start; }
  .open-source-actions { min-width: 0; width: 100%; }
  .open-source-action-row { align-items: flex-start; flex-direction: column; gap: 10px; }
  .open-source-action-row span { white-space: normal; }
  .tech-grid { grid-template-columns: 1fr; max-width: 480px; }
  .step { flex-direction: column; gap: 12px; }
  .step:not(:last-child)::after { display: none; }
  .arch-diagram { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
  .hero-actions { flex-direction: column; align-items: center; }
  .badges { gap: 6px; }
  .badges img { height: 20px; }
  .section { padding: 80px 0; }
  .hero-content { padding: 80px 0 60px; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
  .section { padding: 64px 0; }
  .section-desc { margin-bottom: 48px; }
  .preview-tab { padding: 8px 16px; font-size: var(--text-xs); }
  .hero-content { padding: 60px 0 48px; }
  .features-grid, .packages-grid { max-width: 100%; }
  .code-block pre { padding: 14px; font-size: 0.8rem; }
}

/* ===== Badge bounce-in ===== */
@keyframes badgePopIn {
  0% { opacity: 0; transform: translateY(20px) scale(0.7); }
  55% { opacity: 1; transform: translateY(-4px) scale(1.06); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
.badges img {
  opacity: 0;
  animation: badgePopIn 0.5s ease forwards;
}
.badges img:nth-child(1) { animation-delay: 0.08s; }
.badges img:nth-child(2) { animation-delay: 0.16s; }
.badges img:nth-child(3) { animation-delay: 0.24s; }
.badges img:nth-child(4) { animation-delay: 0.32s; }
.badges img:nth-child(5) { animation-delay: 0.40s; }
.badges img:nth-child(6) { animation-delay: 0.48s; }