@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/instrument-sans-400.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/assets/fonts/instrument-sans-500.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/instrument-sans-600.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/instrument-sans-700.ttf") format("truetype");
}

@font-face {
  font-family: "Tektur";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/tektur-400.ttf") format("truetype");
}

@font-face {
  font-family: "Tektur";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/assets/fonts/tektur-500.ttf") format("truetype");
}

@font-face {
  font-family: "Tektur";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/tektur-700.ttf") format("truetype");
}

:root {
  color-scheme: dark;
  --bg: #090d0d;
  --bg-elevated: #111716;
  --bg-alt: #151d1b;
  --text: #eef6ef;
  --muted: #a6b5ab;
  --line: rgba(238, 246, 239, 0.16);
  --line-strong: rgba(194, 255, 97, 0.34);
  --accent: #c2ff61;
  --accent-2: #ff7456;
  --accent-3: #59e7c4;
  --radius: 6px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  --max: 1180px;
  --hero-top: clamp(6rem, 9vw, 8rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Instrument Sans", sans-serif;
  background:
    linear-gradient(180deg, rgba(194, 255, 97, 0.06), transparent 26%),
    linear-gradient(135deg, rgba(89, 231, 196, 0.05), transparent 60%),
    var(--bg);
  color: var(--text);
}

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

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

p,
li {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

h1,
h2,
h3,
strong {
  color: var(--text);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.06;
}

h1 {
  font-size: clamp(3rem, 7vw, 6rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  max-width: 18ch;
}

h3 {
  font-size: 1.2rem;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(9, 13, 13, 0.72);
  border-bottom: 1px solid rgba(238, 246, 239, 0.08);
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}

.brand img {
  width: 42px;
  height: 42px;
}

.brand-copy {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.brand-copy strong {
  font-family: "Tektur", sans-serif;
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0;
}

.brand-copy span:last-child {
  color: var(--muted);
  font-size: 0.83rem;
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  padding: 0.5rem 0.8rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.94rem;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--text);
  border-color: rgba(238, 246, 239, 0.14);
  background: rgba(238, 246, 239, 0.04);
}

.hero {
  position: relative;
  overflow: clip;
}

.hero-home {
  min-height: 82svh;
}

.hero-page {
  min-height: 62svh;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 13, 13, 0.96), rgba(9, 13, 13, 0.74) 45%, rgba(9, 13, 13, 0.5)),
    linear-gradient(180deg, rgba(9, 13, 13, 0.18), rgba(9, 13, 13, 0.88));
}

.hero-shell {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: end;
  gap: 1.5rem;
  min-height: 82svh;
  padding: var(--hero-top) 0 6rem;
}

.hero-shell-tight {
  min-height: 62svh;
  padding-bottom: 4rem;
}

.eyebrow,
.signal-label,
.mini-index {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Tektur", sans-serif;
  font-size: 0.92rem;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-lede,
.intro-lede {
  max-width: 40rem;
  font-size: clamp(1.15rem, 2vw, 1.35rem);
}

.hero-actions,
.next-links {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.2rem;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover,
.text-link:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: #08100a;
}

.button-secondary {
  background: transparent;
  border-color: rgba(238, 246, 239, 0.18);
}

.text-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: rgba(194, 255, 97, 0.5);
  text-underline-offset: 0.18em;
}

.disclaimer {
  max-width: 46rem;
  font-size: 0.94rem;
  margin: 0;
}

.signal-band {
  border-top: 1px solid rgba(238, 246, 239, 0.08);
  border-bottom: 1px solid rgba(238, 246, 239, 0.08);
  background:
    linear-gradient(90deg, rgba(194, 255, 97, 0.08), rgba(89, 231, 196, 0.06), rgba(255, 116, 86, 0.06)),
    rgba(17, 23, 22, 0.88);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
  padding: 1.35rem 0;
}

.signal-grid div {
  padding-right: 1rem;
  border-right: 1px solid rgba(238, 246, 239, 0.08);
}

.signal-grid div:last-child {
  border-right: 0;
}

.section {
  padding: clamp(4.5rem, 7vw, 7rem) 0;
}

.section-alt {
  background: rgba(17, 23, 22, 0.68);
}

.content-grid,
.intro-grid,
.comparison-grid,
.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.reverse .section-copy {
  order: 2;
}

.reverse > :last-child {
  order: 1;
}

.section-copy {
  display: grid;
  gap: 1.15rem;
}

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.bullet-list li {
  position: relative;
  padding-left: 1.3rem;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 0.48rem;
  height: 0.48rem;
  background: var(--accent-2);
}

.feature-frame,
.architecture-preview,
.faq-preview,
.intro-note,
.mini-card,
.detail-card,
.case-card,
.faq-item,
.diagram-card,
.next-panel,
.photo-credit-band {
  background:
    linear-gradient(180deg, rgba(194, 255, 97, 0.05), transparent 25%),
    var(--bg-elevated);
  border: 1px solid rgba(238, 246, 239, 0.1);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-frame {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  padding: 1rem;
}

.cap-item {
  min-height: 10rem;
  padding: 1rem;
  border: 1px solid rgba(238, 246, 239, 0.08);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(89, 231, 196, 0.08), transparent 60%),
    rgba(255, 255, 255, 0.02);
}

.cap-item span {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent-2);
  font-family: "Tektur", sans-serif;
}

.cap-item strong {
  display: block;
  font-size: 1.1rem;
}

.architecture-preview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1.15fr) auto minmax(0, 1fr);
  align-items: stretch;
  gap: 0.8rem;
  padding: 1rem;
}

.arch-column {
  padding: 1rem;
  border: 1px solid rgba(238, 246, 239, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
}

.arch-column span {
  display: block;
  margin-bottom: 1rem;
  font-family: "Tektur", sans-serif;
  color: var(--accent);
}

.arch-column.highlight {
  background:
    linear-gradient(160deg, rgba(194, 255, 97, 0.12), rgba(89, 231, 196, 0.08)),
    rgba(255, 255, 255, 0.03);
  border-color: rgba(194, 255, 97, 0.24);
}

.arch-arrow {
  width: 1.5rem;
  position: relative;
}

.arch-arrow::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(89, 231, 196, 0.2), rgba(194, 255, 97, 0.9));
}

.arch-arrow::after {
  content: "";
  position: absolute;
  top: calc(50% - 0.28rem);
  right: 0;
  width: 0.55rem;
  height: 0.55rem;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  transform: rotate(45deg);
}

.photo-frame {
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.photo-frame img {
  border-radius: var(--radius);
  min-height: 100%;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.photo-frame figcaption {
  color: var(--muted);
  font-size: 0.9rem;
}

.faq-preview {
  display: grid;
  gap: 0.9rem;
  padding: 1rem;
}

.faq-preview article {
  padding: 1rem;
  border: 1px solid rgba(238, 246, 239, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
}

.source-grid {
  align-items: center;
}

.site-footer {
  border-top: 1px solid rgba(238, 246, 239, 0.1);
  background: rgba(9, 13, 13, 0.95);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.1fr;
  gap: 1.5rem;
  padding: 2rem 0 2.5rem;
  align-items: start;
}

.footer-grid nav {
  display: grid;
  gap: 0.65rem;
}

.footer-note {
  font-size: 0.94rem;
  margin: 0;
}

.page-intro {
  padding: clamp(4rem, 7vw, 6rem) 0 2rem;
  background:
    linear-gradient(180deg, rgba(194, 255, 97, 0.06), transparent 25%),
    rgba(17, 23, 22, 0.45);
}

.intro-note {
  padding: 1.35rem;
  display: grid;
  gap: 1rem;
}

.longform {
  display: grid;
  gap: 2rem;
}

.narrow-flow {
  display: grid;
  gap: 1.2rem;
  max-width: 44rem;
}

.four-up,
.feature-list-grid,
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.mini-card,
.detail-card,
.case-card,
.faq-item {
  padding: 1.35rem;
}

.mini-card h2,
.detail-card h2,
.case-card h2,
.faq-item h2 {
  font-size: 1.35rem;
  margin-bottom: 0.9rem;
  max-width: 20ch;
}

.comparison-grid article {
  padding-right: 1rem;
}

.next-panel {
  padding: 1.5rem;
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

.diagram-shell {
  position: relative;
  padding: 1rem;
  border: 1px solid rgba(238, 246, 239, 0.1);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(89, 231, 196, 0.05), transparent 24%),
    rgba(17, 23, 22, 0.84);
  box-shadow: var(--shadow);
}

.diagram-stage {
  display: grid;
  gap: 1rem;
}

.diagram-card {
  padding: 1.25rem;
}

.diagram-card-focus {
  border-color: rgba(194, 255, 97, 0.24);
  background:
    linear-gradient(160deg, rgba(194, 255, 97, 0.12), rgba(89, 231, 196, 0.06)),
    var(--bg-alt);
}

.diagram-connector {
  position: relative;
  padding-left: 2rem;
  min-height: 2rem;
  color: var(--accent-3);
  font-family: "Tektur", sans-serif;
  font-size: 0.92rem;
}

.diagram-connector::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(89, 231, 196, 0.4), rgba(194, 255, 97, 1));
}

.photo-credit-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
}

.faq-stack {
  display: grid;
  gap: 1rem;
}

@media (max-width: 980px) {
  .signal-grid,
  .content-grid,
  .comparison-grid,
  .source-grid,
  .footer-grid,
  .intro-grid,
  .feature-list-grid,
  .cases-grid,
  .four-up {
    grid-template-columns: 1fr;
  }

  .architecture-preview {
    grid-template-columns: 1fr;
  }

  .arch-arrow {
    width: auto;
    height: 1.25rem;
  }

  .arch-arrow::before {
    inset: 0 auto auto 50%;
    width: 1px;
    height: 100%;
  }

  .arch-arrow::after {
    top: auto;
    bottom: 0;
    left: calc(50% - 0.28rem);
    right: auto;
    transform: rotate(135deg);
  }
}

@media (max-width: 760px) {
  h1 {
    max-width: 10.5ch;
  }

  .header-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    overflow-x: visible;
    flex-wrap: wrap;
    justify-content: flex-start;
    padding-bottom: 0.2rem;
  }

  .site-nav a {
    white-space: normal;
  }

  .hero-home {
    min-height: 78svh;
  }

  .hero-shell {
    min-height: 78svh;
    padding-bottom: 4.5rem;
  }

  .hero-page,
  .hero-shell-tight {
    min-height: 54svh;
  }

  .feature-frame {
    grid-template-columns: 1fr;
  }

  .signal-grid div {
    border-right: 0;
    padding-right: 0;
  }

  .photo-credit-band {
    flex-direction: column;
    align-items: flex-start;
  }
}