:root {
  --ink: #122523;
  --deep: #0b423d;
  --teal: #0e7c7b;
  --alpine: #2f6b4f;
  --ember: #f26b4f;
  --gold: #f4d35e;
  --cloud: #f6f7f2;
  --mist: #d6e8e0;
  --paper: #ffffff;
  --muted: #5f706b;
  --line: rgba(18, 37, 35, 0.14);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--cloud);
}

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

a:hover {
  color: var(--teal);
}

.site-header {
  position: absolute;
  z-index: 4;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: var(--cloud);
}

.site-header.solid {
  position: relative;
  color: var(--ink);
  background: var(--cloud);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 780;
}

.brand img {
  display: block;
}

.site-header nav,
.site-footer nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  font-size: 14px;
  font-weight: 680;
}

.site-header:not(.solid) nav {
  padding: 9px 12px;
  border: 1px solid rgba(246, 247, 242, 0.18);
  border-radius: 8px;
  background: rgba(18, 37, 35, 0.58);
  backdrop-filter: blur(10px);
}

.site-header nav a[aria-current="page"] {
  color: var(--teal);
}

.hero {
  min-height: 72vh;
  padding: 120px clamp(20px, 6vw, 96px) 64px;
  color: var(--cloud);
  background:
    var(--ink) url("assets/fernweh-hero.png?v=20260516-wow") center / cover no-repeat;
  display: grid;
  align-items: center;
}

.hero-content {
  width: min(520px, 100%);
  padding-top: 7vh;
}

.hero h1 {
  margin: 0;
  font-size: clamp(58px, 9vw, 132px);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero p {
  max-width: 440px;
  margin: 28px 0 0;
  color: rgba(246, 247, 242, 0.86);
  font-size: clamp(19px, 2.1vw, 27px);
  line-height: 1.34;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 760;
  border: 1px solid transparent;
}

.button.primary {
  background: var(--cloud);
  color: var(--ink);
}

.button.secondary {
  color: var(--cloud);
  border-color: rgba(246, 247, 242, 0.34);
}

.section {
  padding: clamp(68px, 10vw, 128px) clamp(20px, 6vw, 96px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(40px, 8vw, 112px);
  padding-top: clamp(48px, 6vw, 78px);
  background: var(--cloud);
}

.section-copy h2,
.product-band h2,
.principles h2,
.document-hero h1 {
  margin: 0;
  max-width: 790px;
  font-size: clamp(38px, 5vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.section-copy p,
.product-band p,
.document-hero span,
.document-content p,
.contact-panel p,
.support-list li {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.signal-list {
  display: grid;
  gap: 18px;
}

.signal-list article,
.principle-grid article,
.contact-panel,
.support-list {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
}

.signal-list span {
  color: var(--ember);
  font-size: 13px;
  font-weight: 800;
}

.signal-list h3,
.principle-grid h3,
.contact-panel h2,
.support-list h2,
.document-content h2 {
  margin: 12px 0 0;
  font-size: 21px;
}

.signal-list p,
.principle-grid p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.product-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 40px;
  align-items: end;
  color: var(--cloud);
  background: var(--deep);
}

.product-band p {
  color: rgba(246, 247, 242, 0.78);
}

.platforms {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.platforms li {
  border-bottom: 1px solid rgba(246, 247, 242, 0.2);
  padding: 16px 0;
  font-size: 24px;
  font-weight: 780;
}

.principles {
  background: #ffffff;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 32px clamp(20px, 6vw, 96px);
  color: rgba(246, 247, 242, 0.8);
  background: var(--ink);
}

.site-footer.light {
  color: var(--ink);
  background: var(--cloud);
  border-top: 1px solid var(--line);
}

.site-footer span {
  font-weight: 800;
}

.document-page {
  min-height: 72vh;
  background: var(--cloud);
}

.document-hero {
  padding: clamp(72px, 11vw, 132px) clamp(20px, 6vw, 96px) 36px;
}

.document-hero p {
  margin: 0 0 18px;
  color: var(--ember);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.document-hero span {
  display: block;
  max-width: 760px;
  margin-top: 24px;
}

.document-content,
.support-layout {
  padding: 0 clamp(20px, 6vw, 96px) clamp(76px, 10vw, 132px);
}

.document-content {
  max-width: 900px;
}

.document-content h2 {
  margin-top: 44px;
}

.document-content a,
.contact-panel a {
  color: var(--teal);
  font-weight: 780;
}

.support-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
  gap: 18px;
}

.support-list ul {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding-left: 22px;
}

@media (max-width: 900px) {
  .site-header {
    position: relative;
    color: var(--ink);
    background: var(--cloud);
    border-bottom: 1px solid var(--line);
  }

  .hero {
    min-height: 640px;
    padding-top: 72px;
    align-items: start;
    background-image:
      linear-gradient(90deg, rgba(18, 37, 35, 0.98) 0%, rgba(18, 37, 35, 0.92) 58%, rgba(18, 37, 35, 0.34) 100%),
      url("assets/fernweh-hero.png?v=20260516-wow");
    background-size: auto 78%;
    background-position: 22% bottom;
  }

  .hero-content {
    padding-top: 0;
  }

  .intro,
  .product-band,
  .principle-grid,
  .support-layout {
    grid-template-columns: 1fr;
  }

  .principle-grid {
    margin-top: 30px;
  }
}

@media (max-width: 620px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header nav,
  .site-footer nav {
    flex-wrap: wrap;
  }

  .hero {
    min-height: 640px;
    background-position: 22% bottom;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}