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

:root {
  --ink: #0d1117;
  --ink-2: #3a4150;
  --ink-3: #6b7380;
  --rule: #e4e7ed;
  --bg: #f8f9fb;
  --white: #ffffff;
  --blue-deep: #0a4fd4;
  --blue-bright: #1e8fff;
  --blue-light: #e8f0fe;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(248, 249, 251, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
}

.nav-logo {
  display: block;
  max-width: 140px;
}

.nav-image {
  display: block;
  width: 100%;
  height: auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.2s;
}

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

.nav-cta {
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-bright));
  text-decoration: none;
  padding: 7px 18px;
  border-radius: 7px;
  transition: opacity 0.2s;
}

.nav-cta:hover {
  opacity: 0.85;
}

/* HERO */
.hero-wrap {
  position: relative;
  overflow: hidden;
  padding: 0 2.5rem;
}

.hero-topo {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-wrap::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -80px;
  width: 680px;
  height: 580px;
  background: radial-gradient(
    ellipse at 30% 40%,
    rgba(30, 143, 255, 0.14) 0%,
    rgba(10, 79, 212, 0.06) 45%,
    transparent 68%
  );
  pointer-events: none;
}

.hero-wrap::after {
  content: '';
  position: absolute;
  top: 40px;
  right: -40px;
  width: 380px;
  height: 380px;
  background: radial-gradient(
    ellipse,
    rgba(30, 143, 255, 0.08) 0%,
    transparent 65%
  );
  pointer-events: none;
}

.hero {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 9rem 0 6rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-deep);
  margin-bottom: 1.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue-bright));
  border-radius: 2px;
}

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 6.5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.75rem;
  max-width: 780px;
}

.gradient-text {
  background: linear-gradient(
    100deg,
    var(--blue-deep) 0%,
    var(--blue-bright) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-body {
  font-size: 1.1rem;
  color: var(--ink-2);
  max-width: 520px;
  line-height: 1.8;
  font-weight: 300;
  margin-bottom: 3rem;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-2);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 100px;
  padding: 6px 14px;
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-bright));
  flex-shrink: 0;
}

/* DIVIDER */
.section-rule {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2.5rem;
  border: none;
  border-top: 1px solid var(--rule);
}

/* PRODUCTS */
.products {
  max-width: 900px;
  margin: 0 auto;
  padding: 5rem 2.5rem;
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 3rem;
}

.product {
  display: grid;
  grid-template-columns: 210px 1fr 24px;
  gap: 2.5rem;
  padding: 2.25rem 0;
  border-top: 1px solid var(--rule);
  text-decoration: none;
  color: inherit;
  align-items: start;
}

.product-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: fit-content;
}

.product-icon {
  height: 48px;
  width: 48px;
  object-fit: contain;
  border-radius: 8px;
}

.product:last-child {
  border-bottom: 1px solid var(--rule);
}

.product-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 6px;
  transition: color 0.2s;
}

.product:hover .product-name {
  color: var(--blue-deep);
}

.product-domain {
  font-size: 12px;
  color: var(--ink-3);
  display: block;
  margin: 10px 0px;
}

.product-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 4px;
}

.tag-health {
  background: #e6f4ed;
  color: #1a6b3a;
}

.tag-energy {
  background: #fff3dc;
  color: #7a4800;
}

.tag-edu {
  background: var(--blue-light);
  color: #1a3a8a;
}

.product-desc {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.75;
  font-weight: 300;
}

.product-arrow {
  font-size: 18px;
  color: var(--ink-3);
  opacity: 0;
  transition:
    opacity 0.2s,
    transform 0.2s;
  align-self: center;
}

.product:hover .product-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ABOUT */
.about {
  background: var(--ink);
  color: #fff;
  padding: 6rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -60px;
  width: 480px;
  height: 480px;
  background: radial-gradient(
    ellipse,
    rgba(30, 143, 255, 0.13) 0%,
    transparent 65%
  );
  pointer-events: none;
}

.about-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  align-items: start;
  position: relative;
  z-index: 1;
}

.about h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.4rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: #fff;
}

.about h2 em {
  font-style: italic;
  background: linear-gradient(100deg, #6ab0ff, #a0d0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.85;
  font-weight: 300;
  margin-bottom: 1.25rem;
}

.about-locations {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.loc-label {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.loc-value {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

/* CONTACT */
.contact {
  max-width: 900px;
  margin: 0 auto;
  padding: 5rem 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.contact h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.1rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 0.75rem;
}

.contact p {
  font-size: 15px;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.75;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  text-decoration: none;
  color: var(--ink);
  background: var(--white);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.contact-link:hover {
  border-color: #a8c0f0;
  box-shadow: 0 2px 10px rgba(58, 114, 185, 0.12);
}

.contact-link-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-bright));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-link-icon svg {
  width: 15px;
  height: 15px;
}

.contact-link-meta {
  flex: 1;
}

.contact-link-label {
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 1px;
}

.contact-link-value {
  font-size: 14px;
  color: var(--ink);
}

/* FOOTER */
footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 2.5rem;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer small {
  font-size: 13px;
  color: var(--ink-3);
}

footer a {
  font-size: 13px;
  color: var(--ink-3);
  text-decoration: none;
}

footer a:hover {
  color: var(--ink);
}

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

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

@media (max-width: 720px) {
  nav {
    padding: 0.75rem 1.25rem;
  }

  .nav-logo {
    max-width: 90px;
  }

  .nav-links {
    display: none;
  }

  .hero-wrap {
    padding: 0 1.25rem;
  }

  .hero {
    padding: 7.5rem 0 4rem;
  }

  .products {
    padding: 4rem 1.25rem;
  }

  .product {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    text-align: center;
    max-width: 480px;
    margin: 0 auto;
  }

  .product-group {
    margin: 0 auto;
  }

  .product-arrow {
    display: none;
  }

  .about {
    padding: 4rem 1.25rem;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 4rem 1.25rem;
  }

  footer {
    padding: 1.5rem 1.25rem;
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}