:root {
  --gradient-start: #0877F2;
  --gradient-end: #25BD88;
  --accent: #0877F2;
  --bg: #FFFFFF;
  --bg-subtle: #F9FAFB;
  --card-bg: #FFFFFF;
  --text-primary: #101820;
  --text-secondary: #5F6F7A;
  --text-tertiary: #82909B;
  --border: #E5E9EC;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

[data-lang][hidden] {
  display: none !important;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 200ms ease;
}

.logo-link:hover {
  opacity: 0.75;
}

.logo-img {
  height: 34px;
  width: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

@media (min-width: 480px) {
  .header-actions {
    gap: 24px;
  }
}

.header-contact-link {
  display: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

.header-contact-link:hover {
  color: var(--accent);
}

@media (min-width: 480px) {
  .header-contact-link {
    display: inline;
  }
}

.lang-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 76px;
  height: 32px;
  padding: 3px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
}

.lang-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 35px;
  height: 24px;
  border-radius: var(--radius-full);
  background: #fff;
  box-shadow: 0 1px 3px rgba(16, 24, 32, 0.15);
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
  transform: translateX(35px);
}

.lang-toggle--en .lang-thumb {
  transform: translateX(0);
}

.lang-option {
  position: relative;
  z-index: 1;
  flex: 1;
  height: 24px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: color 200ms ease;
}

.lang-option.is-active {
  color: var(--text-primary);
}

/* Hero */

.hero {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 96px 24px 72px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -160px;
  left: 50%;
  transform: translateX(-50%);
  width: 620px;
  height: 360px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  opacity: 0.1;
  filter: blur(90px);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.gradient-text {
  background: linear-gradient(120deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 24px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  flex-shrink: 0;
}

.hero-title {
  margin: 0 0 20px;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
}

.hero-subtitle {
  margin: 0 auto 32px;
  max-width: 560px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.cta-button {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(120deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(8, 119, 242, 0.22);
  transition: box-shadow 200ms ease, transform 200ms ease;
}

.cta-button:hover {
  box-shadow: 0 10px 26px rgba(8, 119, 242, 0.3);
  transform: translateY(-1px);
}

.cta-button:active {
  transform: scale(0.98);
}

/* Highlights */

.highlights {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 96px;
  border-top: 1px solid var(--border);
}

.section-title {
  text-align: center;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 16px;
}

.section-lead {
  max-width: 620px;
  margin: 0 auto 48px;
  text-align: center;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 40px 32px;
}

.highlight-item {
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.highlight-item h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.highlight-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Contact */

.contact {
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}

.contact-inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 72px 24px;
  scroll-margin-top: 80px;
}

.contact-inner h2 {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.contact-inner h3 {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-secondary);
}

.contact-inner h4 {
  margin: 28px 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.contact-inner p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.contact-lead {
  padding: 14px 16px;
  margin: 0 0 24px !important;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px !important;
  color: var(--text-primary) !important;
}

.contact-inner ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.contact-inner .contact-info {
  list-style: none;
  padding-left: 0;
}

.contact-inner .contact-info li {
  margin-bottom: 4px;
  color: var(--text-primary);
}

.contact-inner .contact-info a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.contact-inner .contact-info a:hover {
  text-decoration: underline;
}

.contact-inner .thanks {
  margin-top: 24px;
  font-weight: 500;
  color: var(--text-primary);
}

/* Footer */

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  height: 22px;
  width: auto;
}

.footer-tagline {
  margin: 0;
  max-width: 320px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

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

.footer-copyright {
  margin: 24px 0 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .footer-brand {
    align-items: flex-start;
  }
}

/* Responsive */

@media (min-width: 640px) {
  .hero-title {
    font-size: 44px;
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: 128px 24px 96px;
  }

  .hero-title {
    font-size: 56px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .highlight-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}