@font-face {
  font-family: "Cormorant Garamond";
  src: url("assets/fonts/cormorant-garamond-v20-latin-700.woff2") format("woff2");
  font-display: swap;
  font-weight: 700;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("assets/fonts/ibm-plex-sans-v19-latin-regular.woff2") format("woff2");
  font-display: swap;
  font-weight: 400;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("assets/fonts/ibm-plex-sans-v19-latin-500.ttf") format("truetype");
  font-display: swap;
  font-weight: 500;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/fonts/ibm-plex-mono-v19-latin-500.woff2") format("woff2");
  font-display: swap;
  font-weight: 500;
}

:root {
  --paper: #f6f0e8;
  --paper-2: #fbf7f1;
  --ink: #1d1b19;
  --muted: #5d5852;
  --line: rgba(29, 27, 25, 0.15);
  --line-strong: rgba(29, 27, 25, 0.28);
  --accent: #d1682e;
  --aqua: #a9cbc6;
  --sage: #d7e3d7;
  --card: rgba(255, 252, 248, 0.86);
  --shadow: 0 24px 70px rgba(68, 49, 33, 0.1);
  --radius-xl: 2rem;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(169, 203, 198, 0.45), transparent 24%),
    radial-gradient(circle at 85% 12%, rgba(209, 104, 46, 0.14), transparent 18%),
    linear-gradient(180deg, #f8f4ed 0%, #f6f0e8 50%, #f0e6db 100%);
  font-family: "IBM Plex Sans", sans-serif;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background-image:
    linear-gradient(rgba(29, 27, 25, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 27, 25, 0.02) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.36), transparent 85%);
}

body::after {
  background:
    radial-gradient(circle at 15% 18%, rgba(255, 255, 255, 0.82) 0 1px, transparent 1px),
    radial-gradient(circle at 78% 16%, rgba(29, 27, 25, 0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 88% 62%, rgba(29, 27, 25, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle at 28% 74%, rgba(255, 255, 255, 0.8) 0 1px, transparent 1px);
}

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

a {
  color: inherit;
}

button,
a,
summary {
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease,
    opacity 180ms ease;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: #fff;
  color: #000;
}

.skip-link:focus {
  top: 1rem;
}

.page-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.section {
  margin-top: 4.5rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0 0.85rem;
  backdrop-filter: blur(0px);
}

.topbar.is-scrolled {
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  max-width: 12rem;
}

.brand img {
  width: 100%;
  height: auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.8rem;
}

.nav a,
.button,
.signal-pill {
  border-radius: 999px;
}

.nav a {
  padding: 0.72rem 1rem;
  border: 1px solid var(--line);
  background: rgba(255, 252, 248, 0.65);
  text-decoration: none;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.83rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
  gap: 1.4rem;
  align-items: stretch;
  padding-top: 1rem;
}

.hero-copy,
.hero-visual,
.summary-card,
.manifesto-card,
.capability-card,
.workflow-card,
.workflow-cta,
.faq-list details {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 252, 248, 0.92), rgba(255, 249, 243, 0.78));
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-copy {
  position: relative;
  padding: 2.6rem;
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -4.5rem;
  top: -4.5rem;
  width: 15rem;
  height: 15rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(209, 104, 46, 0.12), transparent 70%);
}

.eyebrow,
.summary-index,
.capability-id,
.workflow-index,
.stat-card dt {
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.82rem;
}

h1,
h2,
h3,
summary {
  margin: 0;
  font-family: "Cormorant Garamond", serif;
  font-weight: 700;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 8ch;
  font-size: clamp(3.4rem, 7vw, 6.2rem);
  line-height: 0.9;
}

h2 {
  max-width: 16ch;
  font-size: clamp(2.3rem, 4vw, 4rem);
  line-height: 0.92;
}

h3,
summary {
  font-size: clamp(1.45rem, 2vw, 1.85rem);
  line-height: 1;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.68;
}

strong {
  color: var(--ink);
}

.hero-dek {
  max-width: 56ch;
  margin-top: 1.2rem;
  font-size: 1.05rem;
}

.hero-actions,
.workflow-cta {
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3.25rem;
  padding: 0.9rem 1.35rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.83rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--ink);
  color: #f7f2eb;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #000;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 252, 248, 0.74);
  color: var(--ink);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--line-strong);
}

.signal-note {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.35rem;
  padding: 0.82rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.56);
  color: var(--ink);
  font-size: 0.95rem;
}

.signal-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #e79a67);
  box-shadow: 0 0 0 0.3rem rgba(209, 104, 46, 0.12);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 2rem 0 0;
}

.stat-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.54);
}

.stat-card dt {
  color: var(--muted);
  font-size: 0.76rem;
}

.stat-card dd {
  margin: 0.45rem 0 0;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.35;
}

.hero-visual {
  position: relative;
  min-height: 42rem;
  padding: 1.1rem;
}

.signal-stage {
  position: relative;
  height: 100%;
  min-height: 39rem;
  border-radius: calc(var(--radius-xl) - 0.5rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(169, 203, 198, 0.34), transparent 26%),
    linear-gradient(180deg, rgba(246, 240, 232, 0.3), rgba(255, 255, 255, 0.74)),
    linear-gradient(135deg, rgba(215, 227, 215, 0.72), rgba(169, 203, 198, 0.48));
}

.signal-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(29, 27, 25, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 27, 25, 0.08) 1px, transparent 1px);
  background-size: 2.8rem 2.8rem;
  mask-image: radial-gradient(circle at center, #000 52%, transparent 95%);
}

.signal-band {
  position: absolute;
  left: -10%;
  width: 120%;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  white-space: nowrap;
  color: rgba(29, 27, 25, 0.56);
}

.signal-band-a {
  top: 18%;
  transform: rotate(-7deg);
}

.signal-band-b {
  bottom: 20%;
  transform: rotate(9deg);
}

.signal-core {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: 11rem;
  height: 11rem;
  margin-left: -5.5rem;
  margin-top: -5.5rem;
  border: 1px solid rgba(29, 27, 25, 0.18);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.92), rgba(255, 252, 248, 0.72)),
    linear-gradient(135deg, rgba(169, 203, 198, 0.64), rgba(215, 227, 215, 0.52));
  box-shadow:
    0 0 0 1.2rem rgba(255, 255, 255, 0.32),
    0 0 0 3.8rem rgba(255, 255, 255, 0.16);
}

.signal-core img {
  width: 4.8rem;
  height: 4.8rem;
}

.signal-pill {
  position: absolute;
  padding: 0.65rem 0.9rem;
  border: 1px solid rgba(29, 27, 25, 0.14);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-pill-a {
  left: 12%;
  top: 18%;
}

.signal-pill-b {
  right: 12%;
  top: 29%;
}

.signal-pill-c {
  left: 16%;
  bottom: 24%;
}

.signal-pill-d {
  right: 18%;
  bottom: 15%;
}

.section-heading {
  display: grid;
  gap: 1rem;
}

.summary-grid,
.manifesto-grid,
.capability-grid,
.workflow-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.6rem;
}

.summary-grid,
.manifesto-grid,
.workflow-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.capability-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-card,
.manifesto-card,
.capability-card,
.workflow-card,
.workflow-cta,
.faq-list details {
  border-radius: var(--radius-lg);
  padding: 1.45rem;
}

.summary-index,
.capability-id,
.workflow-index {
  display: inline-flex;
  margin-bottom: 0.85rem;
  color: var(--accent);
  font-size: 0.82rem;
}

.summary-card h3,
.manifesto-card h3,
.capability-card h3,
.workflow-card h3 {
  margin-bottom: 0.8rem;
}

.workflow-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 0.75rem;
}

.workflow-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.faq-list details[open] summary {
  margin-bottom: 0.8rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
}

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

.faq-list details p {
  max-width: 64ch;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 420ms ease,
    transform 420ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .hero,
  .summary-grid,
  .manifesto-grid,
  .workflow-grid,
  .capability-grid,
  .workflow-cta,
  .footer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-visual {
    min-height: 33rem;
  }

  .signal-stage {
    min-height: 31rem;
  }

  .workflow-cta {
    display: grid;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 1rem, var(--max-width));
  }

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

  .nav {
    justify-content: flex-start;
  }

  .hero-copy {
    padding: 1.6rem;
  }

  .hero-visual {
    min-height: 28rem;
    padding: 0.75rem;
  }

  .signal-stage {
    min-height: 26rem;
  }

  .signal-band {
    font-size: 0.68rem;
  }

  .signal-core {
    width: 8.5rem;
    height: 8.5rem;
    margin-left: -4.25rem;
    margin-top: -4.25rem;
    box-shadow:
      0 0 0 0.8rem rgba(255, 255, 255, 0.3),
      0 0 0 2.2rem rgba(255, 255, 255, 0.14);
  }

  .signal-pill {
    padding: 0.52rem 0.72rem;
    font-size: 0.64rem;
  }

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

  .summary-card,
  .manifesto-card,
  .capability-card,
  .workflow-card,
  .workflow-cta,
  .faq-list details {
    padding: 1.2rem;
  }
}