:root {
  --bg: #f7f8fa;
  --bg-alt: #eef1f5;
  --surface: #ffffff;
  --text: #1a2332;
  --text-soft: #3d4a5c;
  --muted: #5f6b7a;
  --navy: #0f2a4a;
  --navy-soft: #1a3d66;
  --accent: #2b5a8c;
  --line: #d8dee8;
  --line-soft: #e8ecf2;
  --shadow: 0 12px 40px rgba(15, 42, 74, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Source Sans 3", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
}

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

.container {
  width: min(1080px, 92%);
  margin: auto;
}

h1,
h2,
h3 {
  font-family: "Source Serif 4", Georgia, serif;
  line-height: 1.2;
  color: var(--navy);
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0;
}

.eyebrow,
.section-label {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  margin-bottom: 1rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.navbar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-text {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.01em;
}

.logo-text strong {
  font-weight: 700;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background: var(--navy);
  position: relative;
  flex-shrink: 0;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 8px 10px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
}

.logo-mark.small {
  width: 28px;
  height: 28px;
}

.logo-mark.small::after {
  inset: 6px 8px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  color: var(--text-soft);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a {
  transition: color 0.2s ease;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  padding: 0 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--navy);
  border-radius: 1px;
}

.hero {
  padding: calc(72px + 4.5rem) 0 4rem;
  background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: start;
}

.hero-content p {
  color: var(--muted);
  max-width: 34rem;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 0.875rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.4rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

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

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

.btn.secondary {
  border-color: var(--line);
  color: var(--navy);
  background: var(--surface);
}

.btn.secondary:hover {
  border-color: var(--navy);
}

.hero-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel-header {
  padding: 1.5rem 1.75rem;
  background: var(--navy);
  color: #fff;
}

.hero-panel-header h2 {
  color: #fff;
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.hero-panel-header p {
  font-size: 0.85rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-pillars {
  list-style: none;
}

.hero-pillars li {
  padding: 1.35rem 1.75rem;
  border-bottom: 1px solid var(--line-soft);
}

.hero-pillars li:last-child {
  border-bottom: 0;
}

.pillar-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.hero-pillars p {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.metrics {
  background: var(--navy);
  color: #fff;
  padding: 2.25rem 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.metric {
  text-align: center;
  padding: 0 1rem;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.metric:last-child {
  border-right: 0;
}

.metric strong {
  display: block;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.metric span {
  font-size: 0.85rem;
  opacity: 0.82;
  line-height: 1.4;
}

.section {
  padding: 5rem 0;
}

.two-columns {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
  align-items: start;
}

.about {
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-copy p,
.section-heading p,
.quality p,
.cta p,
.contact > .contact-grid > div > p {
  color: var(--muted);
}

.section-heading {
  max-width: 38rem;
  margin-bottom: 2.75rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.product-card {
  padding: 1.75rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.product-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.product-code {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.product-card p {
  color: var(--muted);
  font-size: 0.95rem;
  flex: 1;
  margin-bottom: 1.25rem;
}

.product-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  align-self: flex-start;
}

.product-link:hover {
  border-color: var(--accent);
}

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

.quality-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 2.5rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.quality-list {
  display: grid;
  gap: 0.75rem;
}

.quality-list div {
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: 0.95rem;
}

.check {
  width: 18px;
  height: 18px;
  border-radius: 2px;
  background: var(--navy);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}

.check::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.cta-box {
  text-align: center;
  padding: 3rem 2rem;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.cta-box .btn {
  margin-top: 1.5rem;
}

.contact {
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  margin-top: 2rem;
  display: grid;
  gap: 1.25rem;
}

.contact-info dt {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.contact-info dd {
  color: var(--text-soft);
  font-size: 1rem;
}

.form {
  display: grid;
  gap: 1rem;
}

.form label {
  display: grid;
  gap: 0.4rem;
}

.form label span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
}

.form input,
.form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  padding: 0.8rem 0.9rem;
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form input:focus,
.form textarea:focus {
  border-color: var(--accent);
  background: #fff;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
  background: var(--bg-alt);
}

.footer-content {
  display: grid;
  gap: 1.25rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.footer-disclaimer {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
  max-width: 52rem;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .nav-links li {
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
  }

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

  .hero-grid,
  .two-columns,
  .quality-box,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
  }

  .metric {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 1.25rem;
  }

  .metric:nth-last-child(-n + 2) {
    border-bottom: 0;
    padding-bottom: 0;
  }

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

  .section {
    padding: 3.5rem 0;
  }
}