:root {
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #0b0f14;
  --color-text-muted: #5a6372;
  --color-text-light: #8b92a5;
  --color-border: #e6e9ef;
  --color-border-light: #f0f2f5;
  --color-accent: #1b6cff;
  --color-accent-strong: #1556cc;
  --color-accent-light: #4d8aff;
  --color-success: #0f8a5f;
  --color-warning: #d89a00;
  --color-danger: #d64545;
  --font-sans: "Satoshi", "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --text-xs: 12px;
  --text-sm: 14px;
  --text-md: 16px;
  --text-lg: 20px;
  --text-xl: 28px;
  --text-2xl: 36px;
  --text-3xl: 48px;
  --text-4xl: 64px;
  --line-tight: 1.1;
  --line-normal: 1.5;
  --line-loose: 1.7;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-sm: 0 2px 4px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.12);
  --shadow-xl: 0 24px 64px rgba(16, 24, 40, 0.16);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-med: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--line-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--duration-med) var(--ease-out);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-5);
}

.logo {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: var(--text-lg);
  color: var(--color-text);
  transition: opacity var(--duration-fast) var(--ease-out);
}

.logo:hover {
  opacity: 0.8;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.nav-links a {
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--duration-med) var(--ease-out);
}

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

.nav-cta {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--duration-med) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: #ffffff;
}

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

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Hero Section */
.hero {
  padding: var(--space-10) 0 var(--space-9);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -10%;
  width: 120%;
  height: 200%;
  background: radial-gradient(circle at 20% 30%, rgba(27, 108, 255, 0.08), transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(229, 247, 255, 0.6), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: var(--line-tight);
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-5);
  font-weight: 700;
  color: var(--color-text);
}

.hero p {
  font-size: clamp(18px, 2vw, 22px);
  line-height: var(--line-loose);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-7);
  font-weight: 400;
  max-width: 600px;
}

.hero .nav-cta {
  margin-top: var(--space-6);
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-7);
  display: grid;
  gap: var(--space-5);
  transition: transform var(--duration-slow) var(--ease-out),
    box-shadow var(--duration-slow) var(--ease-out);
}

.hero-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.hero-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}

.hero-card .list {
  display: grid;
  gap: var(--space-3);
}

.hero-card .list > div {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--line-normal);
}

.hero-card .list > div:last-child {
  border-bottom: none;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, #eef2ff 0%, #e5f7ff 100%);
  color: #2a3b75;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

/* Sections */
.section {
  padding: var(--space-9) 0;
  position: relative;
}

.section-title {
  font-size: clamp(32px, 4vw, 44px);
  line-height: var(--line-tight);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-4);
  font-weight: 700;
  color: var(--color-text);
}

.section-subtitle {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-7);
  font-size: var(--text-lg);
  line-height: var(--line-loose);
  max-width: 700px;
}

/* Grids */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-7);
  transition: all var(--duration-med) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--duration-med) var(--ease-out);
}

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

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

.card h3 {
  font-size: var(--text-xl);
  line-height: var(--line-tight);
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
  font-weight: 600;
  color: var(--color-text);
}

.card p {
  color: var(--color-text-muted);
  line-height: var(--line-loose);
  margin: 0 0 var(--space-5);
}

.card p:last-child {
  margin-bottom: 0;
}

.card ul.list {
  margin: var(--space-4) 0;
}

.card ul.list li {
  padding: var(--space-2) 0;
  color: var(--color-text-muted);
  line-height: var(--line-loose);
  position: relative;
  padding-left: var(--space-5);
}

.card ul.list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

/* Workflow */
.workflow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.workflow-step {
  background: linear-gradient(135deg, #0b0f14 0%, #1a1f2e 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  transition: transform var(--duration-med) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.workflow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-accent);
}

.workflow-step:hover {
  transform: translateY(-4px);
}

.workflow-step h3 {
  font-size: var(--text-xl);
  line-height: var(--line-tight);
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
  font-weight: 600;
  color: #ffffff;
}

.workflow-step p {
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-loose);
  margin: 0 0 var(--space-5);
}

/* Feature Strip */
.feature-strip {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.highlight {
  background: linear-gradient(135deg, #f2f5fb 0%, #eef7ff 50%, #f0f8ff 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  position: relative;
  overflow: hidden;
}

.highlight::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(27, 108, 255, 0.06), transparent 70%);
  pointer-events: none;
}

.highlight > * {
  position: relative;
  z-index: 1;
}

.highlight h2 {
  font-size: clamp(28px, 3vw, 36px);
  line-height: var(--line-tight);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-5);
  font-weight: 700;
  color: var(--color-text);
}

.highlight p {
  font-size: var(--text-lg);
  line-height: var(--line-loose);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-6);
}

/* Badge Row */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.badge-chip {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--duration-fast) var(--ease-out);
}

.badge-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

/* Pricing Teaser */
.pricing-teaser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  padding: var(--space-7);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-med) var(--ease-out);
}

.pricing-teaser:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.pricing-teaser h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: var(--line-tight);
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-3);
  font-weight: 600;
}

.pricing-teaser p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: var(--text-md);
}

/* CTA Band */
.cta-band {
  background: linear-gradient(135deg, #0b0f14 0%, #1a1f2e 100%);
  color: #ffffff;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(27, 108, 255, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-band > * {
  position: relative;
  z-index: 1;
}

.cta-band h2 {
  font-size: clamp(28px, 3vw, 36px);
  line-height: var(--line-tight);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
  font-weight: 700;
  color: #ffffff;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  font-size: var(--text-md);
}

.cta-band .btn-primary {
  background: var(--color-accent);
  box-shadow: 0 4px 12px rgba(27, 108, 255, 0.3);
}

.cta-band .btn-primary:hover {
  background: var(--color-accent-light);
  box-shadow: 0 6px 20px rgba(27, 108, 255, 0.4);
}

/* Footer */
.footer {
  padding: var(--space-9) 0 var(--space-7);
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  background: var(--color-surface);
  margin-top: var(--space-9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-8);
  align-items: start;
}

.footer .logo {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.footer p {
  color: var(--color-text-muted);
  line-height: var(--line-loose);
  margin: 0;
}

.footer .list {
  display: grid;
  gap: var(--space-3);
}

.footer .list strong {
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  display: block;
}

.footer .list a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  transition: color var(--duration-fast) var(--ease-out);
}

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

/* Page Hero */
.page-hero {
  padding: var(--space-9) 0 var(--space-7);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 200%;
  background: radial-gradient(circle, rgba(27, 108, 255, 0.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.page-hero > * {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  line-height: var(--line-tight);
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-4);
  font-weight: 700;
  color: var(--color-text);
}

.page-hero .section-subtitle {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* List */
.list {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}

/* Forms */
.form {
  display: grid;
  gap: var(--space-5);
  max-width: 500px;
}

.input {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: var(--text-md);
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out);
  width: 100%;
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(27, 108, 255, 0.1);
}

.input::placeholder {
  color: var(--color-text-light);
}

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-grid,
  .feature-strip {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .hero {
    padding: var(--space-9) 0 var(--space-8);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
}

@media (max-width: 900px) {
  .grid-3,
  .grid-2,
  .workflow {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-5);
    gap: var(--space-4);
    box-shadow: var(--shadow-lg);
    z-index: 99;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .cta-band,
  .pricing-teaser {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .section {
    padding: var(--space-7) 0;
  }

  .hero {
    padding: var(--space-8) 0 var(--space-7);
  }

  .page-hero {
    padding: var(--space-7) 0 var(--space-6);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-4);
  }

  .nav-inner {
    padding: var(--space-3) 0;
  }

  .btn {
    padding: 10px 16px;
    font-size: var(--text-sm);
  }

  .card,
  .hero-card,
  .highlight {
    padding: var(--space-5);
  }

  .cta-band,
  .pricing-teaser {
    padding: var(--space-6);
  }
}

/* Smooth scrolling for anchor links */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

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

/* Print styles */
@media print {
  .nav,
  .footer,
  .btn {
    display: none;
  }
}