:root {
  --color-bg: #08111f;
  --color-bg-secondary: #0d1930;
  --color-bg-tertiary: #172844;
  --color-surface: #101b2d;
  --color-surface-hover: #172844;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(82, 214, 162, 0.35);
  --color-text: #edf4ff;
  --color-text-secondary: #95a3b7;
  --color-text-muted: #7a8a9a;
  --color-primary: #52d6a2;
  --color-primary-hover: #6de8b8;
  --color-primary-glow: rgba(82, 214, 162, 0.15);
  --color-accent: #22d3ee;
  --color-success: #52d6a2;
  --color-warning: #f8c14a;
  --color-error: #ff6961;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* ========== Navigation ========== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 17, 31, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(8, 17, 31, 0.95);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast) !important;
}

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

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ========== Mobile Menu ========== */

.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 8px;
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-link {
  display: block;
  padding: 16px;
  font-size: 18px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.mobile-menu-link:hover {
  background: var(--color-bg-tertiary);
}

.mobile-menu-cta {
  background: var(--color-primary);
  color: white;
  text-align: center;
  margin-top: 16px;
}

/* ========== Hero ========== */

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

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(82, 214, 162, 0.18), transparent 30rem),
    linear-gradient(135deg, #08111f 0%, #0d1930 48%, #09101e 100%);
  pointer-events: none;
}

.hero-container {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-primary-glow);
  border: 1px solid rgba(82, 214, 162, 0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary-hover);
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title-accent {
  background: linear-gradient(135deg, #52d6a2 0%, #6de8b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-light);
}

.btn-large {
  padding: 18px 36px;
  font-size: 16px;
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 24px 0;
}

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

.hero-stat-value {
  font-size: 36px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-text);
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* ========== Trust Bar ========== */

.trust {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 24px;
  background: var(--color-bg-secondary);
}

.trust-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.trust-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.trust-grid {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.trust-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* ========== Sections ========== */

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--color-primary-glow);
  border: 1px solid rgba(82, 214, 162, 0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-description {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Features ========== */

.features {
  padding: 120px 24px;
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
}

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

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-border-light);
  background: var(--color-surface-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-glow);
  border: 1px solid rgba(82, 214, 162, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========== Architecture ========== */

.architecture {
  padding: 120px 24px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.architecture-container {
  max-width: 1200px;
  margin: 0 auto;
}

.arch-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}

.arch-step {
  position: relative;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.arch-step-number {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.arch-step h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.arch-step p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.arch-diagram-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  text-align: center;
  min-width: 140px;
}

.arch-diagram-box-accent {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary-glow);
}

.arch-diagram-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.arch-diagram-items {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.arch-diagram-item {
  font-size: 12px;
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.arch-diagram-arrow {
  color: var(--color-text-muted);
}

.arch-diagram-arrow svg {
  width: 40px;
  height: 20px;
}

/* ========== Security ========== */

.security {
  padding: 120px 24px;
}

.security-container {
  max-width: 1200px;
  margin: 0 auto;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.security-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition-base);
}

.security-card:hover {
  border-color: var(--color-border-light);
}

.security-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.security-card-icon svg {
  width: 28px;
  height: 28px;
}

.security-card-icon--shield {
  background: rgba(82, 214, 162, 0.1);
  border: 1px solid rgba(82, 214, 162, 0.2);
  color: var(--color-success);
}

.security-card-icon--lock {
  background: rgba(82, 214, 162, 0.1);
  border: 1px solid rgba(82, 214, 162, 0.2);
  color: var(--color-primary);
}

.security-card-icon--deterministic {
  background: rgba(149, 163, 183, 0.1);
  border: 1px solid rgba(149, 163, 183, 0.2);
  color: var(--color-text-secondary);
}

.security-card-icon--container {
  background: rgba(248, 193, 74, 0.1);
  border: 1px solid rgba(248, 193, 74, 0.2);
  color: var(--color-warning);
}

.security-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.security-card-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Demo CTA ========== */

.demo {
  padding: 120px 24px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.demo-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.demo-content {
  text-align: left;
}

.demo-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  text-align: left;
}

.demo-description {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.demo-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.demo-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 500;
}

.demo-feature-icon {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
}

.demo-visual {
  display: flex;
  justify-content: center;
}

.demo-terminal {
  width: 100%;
  max-width: 500px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.demo-terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.demo-terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border-light);
}

.demo-terminal-dot:first-child {
  background: var(--color-error);
}

.demo-terminal-dot:nth-child(2) {
  background: var(--color-warning);
}

.demo-terminal-dot:nth-child(3) {
  background: var(--color-success);
}

.demo-terminal-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
}

.demo-terminal-line {
  white-space: nowrap;
}

.demo-terminal-prompt {
  color: var(--color-primary);
  margin-right: 8px;
}

.demo-terminal-command {
  color: var(--color-text);
}

.demo-terminal-output {
  color: var(--color-text-muted);
  padding-left: 18px;
}

.demo-terminal-success {
  color: var(--color-success);
  margin-right: 6px;
}

.demo-terminal-cursor {
  padding-left: 18px;
}

.demo-terminal-cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--color-text-muted);
}

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

/* ========== Footer ========== */

.footer {
  padding: 80px 24px 40px;
  border-top: 1px solid var(--color-border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
  margin-bottom: 64px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.footer-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 300px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-links-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links-title {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 15px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ========== Custom Solutions ========== */

.custom-solutions {
  padding: 120px 24px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.custom-solutions-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.custom-solutions-content {
  text-align: left;
}

.custom-solutions-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  text-align: left;
}

.custom-solutions-description {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.custom-solutions-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.custom-solutions-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 500;
}

.custom-solutions-item-icon {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
}

.custom-solutions-visual {
  display: flex;
  justify-content: center;
}

.custom-solutions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  max-width: 420px;
}

.custom-solutions-grid-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition-base);
}

.custom-solutions-grid-item:hover {
  border-color: var(--color-border-light);
}

.custom-solutions-grid-item-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary-glow);
}

.custom-solutions-grid-item-number {
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-primary);
  margin-bottom: 8px;
}

.custom-solutions-grid-item-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* ========== Animations ========== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */

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

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

  .demo-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .custom-solutions-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

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

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 140px 24px 80px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .hero-stat-divider {
    width: 40px;
    height: 1px;
  }

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

  .arch-flow {
    grid-template-columns: 1fr;
  }

  .arch-diagram {
    flex-direction: column;
  }

  .arch-diagram-arrow {
    transform: rotate(90deg);
  }

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

  .trust-grid {
    flex-direction: column;
    gap: 16px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .section-header {
    margin-bottom: 40px;
  }
}