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

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-muted: #555770;
  --color-primary: #1a1a2e;
  --color-accent: #4361ee;
  --color-border: #e2e4e9;
  --color-card-bg: #ffffff;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

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

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-primary);
  opacity: 1;
}

.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-primary);
  border-radius: 2px;
  transition: 0.2s;
}

/* === Hero === */
.hero {
  padding: 160px 0 100px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-badges {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge img {
  height: 44px;
  border-radius: 8px;
}

/* === Sections === */
.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-intro {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 720px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* === Content Grid === */
.content-grid {
  max-width: 800px;
}

.content-block p {
  font-size: 16px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.8;
}

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

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

.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* === Services === */
.services-list {
  display: grid;
  gap: 32px;
  margin-top: 16px;
}

.service-item {
  border-left: 3px solid var(--color-accent);
  padding-left: 24px;
}

.service-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.service-item p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* === Contact === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.contact-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.contact-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

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

.contact-card a {
  color: var(--color-accent);
  word-break: break-all;
}

/* === Footer === */
.footer {
  background: var(--color-primary);
  color: #ffffff;
  padding: 64px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer .logo {
  color: #ffffff;
  display: inline-block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.footer-links a:hover {
  color: #ffffff;
  opacity: 1;
}

/* === Legal Pages === */
.legal-page {
  padding: 120px 0 80px;
}

.legal-page h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
}

.legal-page .last-updated {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 48px;
}

.legal-page h2 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 12px;
}

.legal-page h3 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 8px;
}

.legal-page p,
.legal-page li {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.legal-page ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

/* === Responsive === */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  }

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

  .nav-toggle {
    display: flex;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero {
    padding: 120px 0 64px;
  }

  .section {
    padding: 64px 0;
  }
}