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

:root {
  --color-bg: #F7EED8;
  --color-text: #2B2B2B;
  --color-text-muted: #5C5C5C;
  --color-primary: #F07B49;
  --color-primary-hover: #E06A38;
  --color-accent: #F2AF4C;
  --color-surface: #FFFFFF;
  --color-surface-border: rgba(43, 43, 43, 0.08);
  --color-hero-bg: rgba(240, 123, 73, 0.06);
  --color-footer-bg: #2B2B2B;
  --color-footer-text: #F7EED8;
  --color-footer-muted: #A0A0A0;
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1A1A1A;
    --color-text: #E8E0CC;
    --color-text-muted: #A0A0A0;
    --color-primary: #F07B49;
    --color-primary-hover: #F58E62;
    --color-surface: #262626;
    --color-surface-border: rgba(255, 255, 255, 0.08);
    --color-hero-bg: rgba(240, 123, 73, 0.08);
    --color-footer-bg: #111111;
    --color-footer-text: #E8E0CC;
    --color-footer-muted: #777;
  }
}

html {
  scroll-behavior: smooth;
}

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

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

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-surface-border);
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

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

.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.15s;
}

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

.header-nav a.btn-primary {
  color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

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

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

.btn-large {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: 12px;
}

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

.btn-outline:hover {
  background: var(--color-surface);
}

/* Hero */
.hero {
  padding: 80px 24px 96px;
  text-align: center;
  background: var(--color-hero-bg);
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--color-surface);
  border: 1px solid var(--color-surface-border);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--color-primary);
}

.hero p {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Features */
.features {
  padding: 96px 24px;
}

.features-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 56px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-surface-border);
  border-radius: 16px;
  padding: 32px 28px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-hero-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 650;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* How It Works */
.how-it-works {
  padding: 96px 24px;
  background: var(--color-hero-bg);
}

.how-it-works-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.lifecycle {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.lifecycle-step {
  text-align: center;
  position: relative;
}

.lifecycle-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.lifecycle-step h3 {
  font-size: 18px;
  font-weight: 650;
  margin-bottom: 8px;
}

.lifecycle-step p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 240px;
  margin: 0 auto;
}

.lifecycle-arrow {
  display: none;
}

@media (min-width: 768px) {
  .lifecycle {
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: start;
  }

  .lifecycle-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 12px;
    font-size: 24px;
    color: var(--color-text-muted);
  }
}

/* CTA */
.cta {
  padding: 96px 24px;
  text-align: center;
}

.cta-inner {
  max-width: 560px;
  margin: 0 auto;
}

.cta h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta p {
  font-size: 16px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

/* Footer */
.footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 48px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.footer-brand img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.footer-text {
  font-size: 13px;
  color: var(--color-footer-muted);
}

/* Responsive */
@media (max-width: 640px) {
  .header-nav a:not(.btn) {
    display: none;
  }

  .hero {
    padding: 56px 20px 72px;
  }

  .features,
  .how-it-works,
  .cta {
    padding: 64px 20px;
  }
}