:root {
  --bg: #f7f1e5;
  --bg-soft: #fcfaf5;
  --surface: rgba(255, 255, 255, 0.74);
  --surface-strong: #fffaf0;
  --ink: #18273d;
  --muted: #526177;
  --line: rgba(24, 39, 61, 0.12);
  --primary: #b78d3e;
  --primary-strong: #9f7629;
  --navy: #112240;
  --shadow: 0 20px 60px rgba(17, 34, 64, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  line-height: 1.65;
  background:
    radial-gradient(circle at top left, rgba(183, 141, 62, 0.18), transparent 32%),
    radial-gradient(circle at right 20%, rgba(17, 34, 64, 0.12), transparent 30%),
    linear-gradient(180deg, #fbf7ef 0%, #f4ecdd 100%);
}

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

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

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(251, 247, 239, 0.78);
  border-bottom: 1px solid rgba(24, 39, 61, 0.08);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand img {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  box-shadow: 0 12px 24px rgba(17, 34, 64, 0.14);
}

.brand-copy {
  display: grid;
  gap: 0.1rem;
}

.brand-copy strong {
  font-size: 1.1rem;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--muted);
  font-weight: 600;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--navy);
}

.nav-cta {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
}

.hero {
  padding: 5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-strong);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Alegreya", Georgia, serif;
  line-height: 1.1;
  color: #101f38;
}

h1 {
  font-size: clamp(2.7rem, 4vw, 4.8rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 3vw, 3.15rem);
}

h3 {
  font-size: 1.5rem;
}

.hero-lead,
.prose p,
.feature-card p,
.audience-card p,
.aside-note p,
.faq-list p,
.cta-shell p,
.device-caption p {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-copy {
  display: grid;
  gap: 1.4rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, #c89b44 0%, #ab7d2f 100%);
  color: #fff;
  box-shadow: 0 18px 34px rgba(183, 141, 62, 0.28);
}

.button-secondary {
  border: 1px solid rgba(17, 34, 64, 0.14);
  background: rgba(255, 255, 255, 0.7);
  color: var(--navy);
}

.hero-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.hero-points li {
  position: relative;
  padding-left: 1.45rem;
  color: var(--ink);
  font-weight: 600;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #d3a84e 0%, #9a742e 100%);
}

.device-card {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(17, 34, 64, 0.98), rgba(17, 34, 64, 0.9));
  box-shadow: var(--shadow);
}

.device-card img {
  width: 100%;
}

.device-caption {
  padding: 1.2rem 1.25rem 1.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.device-caption p {
  color: rgba(255, 255, 255, 0.85);
}

.signal-band {
  padding: 0 0 2rem;
}

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

.signal-item,
.feature-card,
.audience-card,
.aside-note,
.faq-list details,
.cta-shell,
.split-panel {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.signal-item {
  padding: 1.2rem 1rem;
  border-radius: 20px;
  text-align: center;
}

.signal-item strong {
  display: block;
  font-size: 1.45rem;
  font-family: "Alegreya", Georgia, serif;
  color: var(--navy);
}

.signal-item span {
  color: var(--muted);
}

.section {
  padding: 4.5rem 0;
}

.section-visual-paths {
  padding-top: 1rem;
}

.section-heading {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.section-heading.narrow {
  max-width: 760px;
}

.prose-wrap {
  display: grid;
  gap: 1.8rem;
}

.visual-path-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.visual-path-card {
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
}

.visual-path-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.visual-path-copy {
  display: grid;
  gap: 0.75rem;
  padding: 1.25rem 1.3rem 1.4rem;
}

.visual-path-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.prose.two-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

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

.feature-card,
.audience-card {
  padding: 1.4rem;
  border-radius: 22px;
}

.feature-card {
  display: grid;
  gap: 0.9rem;
}

.section-highlight {
  padding-top: 0.5rem;
}

.split-panel {
  padding: 2rem;
  border-radius: 30px;
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 2rem;
}

.cluster-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-content: flex-start;
}

.cluster-list span {
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(17, 34, 64, 0.09);
  color: var(--navy);
  font-weight: 700;
}

.prose.with-aside {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr;
  gap: 1.2rem;
  align-items: start;
}

.aside-note {
  padding: 1.35rem;
  border-radius: 22px;
  display: grid;
  gap: 0.8rem;
}

.faq-list {
  display: grid;
  gap: 0.9rem;
}

.faq-list details {
  border-radius: 20px;
  padding: 1rem 1.1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--navy);
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details p {
  margin-top: 0.8rem;
}

.section-cta {
  padding-bottom: 5rem;
}

.cta-shell {
  padding: 2rem;
  border-radius: 30px;
  display: grid;
  grid-template-columns: 1.25fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.cta-actions {
  display: grid;
  gap: 1rem;
  justify-items: start;
}

.cta-note {
  color: var(--muted);
}

code {
  padding: 0.2rem 0.45rem;
  border-radius: 8px;
  background: rgba(17, 34, 64, 0.06);
  color: var(--navy);
}

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid rgba(24, 39, 61, 0.08);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-grid p {
  margin: 0.5rem 0 0;
  max-width: 52ch;
  color: var(--muted);
}

.footer-grid a {
  display: block;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

@media (max-width: 1080px) {
  .hero-grid,
  .split-panel,
  .prose.with-aside,
  .cta-shell {
    grid-template-columns: 1fr;
  }

  .signal-grid,
  .visual-path-grid,
  .feature-grid,
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .site-header {
    position: static;
  }

  .nav-shell,
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    flex-wrap: wrap;
  }

  .prose.two-columns,
  .signal-grid,
  .visual-path-grid,
  .feature-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }

  h1 {
    max-width: 100%;
  }

  .button {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}