:root {
  --bg: #f4f1ec;
  --ink: #0c0c0c;
  --muted: #6a645c;
  --surface: #fffdf8;
  --accent: #ff5c2a;
  --accent-2: #0b6af2;
  --accent-3: #18a06d;
  --border: #151515;
  --grid-line: rgba(12, 12, 12, 0.08);
  --shadow: 6px 6px 0 #0c0c0c;
  --radius: 0px;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Space Grotesk", sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  line-height: 1.55;
}

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

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

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

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 241, 236, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
}

.brand-logo img {
  height: 32px;
  width: auto;
  display: block;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 180px;
}

@media (max-width: 700px) {
  .brand-logo img {
    height: 28px;
  }
  .brand-subtitle {
    max-width: 100%;
  }
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav-links a {
  padding: 6px 10px;
  border: 1px solid transparent;
}

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

.cta-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  font-family: "IBM Plex Mono", monospace;
  padding: 12px 18px;
  border: 2px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--border);
}

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

.btn-primary:hover {
  color: #fff;
}

.btn-secondary {
  background: transparent;
}

.hero {
  padding: 90px 0 70px;
  display: grid;
  gap: 40px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 1.05;
  margin: 0 0 18px;
}

.hero-title span {
  display: inline-block;
  border-bottom: 6px solid var(--accent);
  padding-bottom: 6px;
}

.hero-lede {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2rem;
}

.hero-meta strong {
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink);
}

.hero-collage {
  position: relative;
  display: grid;
  gap: 18px;
}

.frame {
  border: 3px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 12px;
}

.frame--secondary {
  position: relative;
  top: -16px;
  left: 18px;
  border-color: var(--accent-2);
  box-shadow: 6px 6px 0 var(--accent-2);
}

/* ── Browser window frame ──────────────────────────── */
.browser-frame {
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

/* secondary offset — same as the old .frame--secondary */
.browser-frame.frame--secondary {
  position: relative;
  top: -16px;
  left: 18px;
  border-color: var(--accent-2);
  box-shadow: 6px 6px 0 var(--accent-2);
}

.browser-chrome {
  background: var(--ink);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
}

.browser-dot {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.browser-dot:nth-child(1) { background: var(--accent);  border-color: var(--accent); }
.browser-dot:nth-child(2) { background: var(--accent-3); border-color: var(--accent-3); }
.browser-dot:nth-child(3) { background: rgba(255, 255, 255, 0.18); }

.browser-chrome-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-left: auto;
}

/* Clipped, scrolling viewport */
.browser-viewport {
  overflow: hidden;
  height: 280px;
  position: relative;
}

.browser-viewport img {
  width: 100%;
  height: 440px;          /* 160 px taller than viewport = parallax travel */
  object-fit: cover;
  object-position: top left;
  display: block;
  will-change: transform;
  transform: translateY(0);
}

/* Taller variant used in full-width or split sections */
.browser-frame--tall .browser-viewport        { height: 320px; }
.browser-frame--tall .browser-viewport img    { height: 500px; }

.section {
  padding: 70px 0;
}

.section-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.8rem, 2.6vw, 2.6rem);
  margin: 0 0 18px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.section-subtitle {
  color: var(--muted);
  max-width: 700px;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.card {
  border: 2px solid var(--border);
  background: var(--surface);
  padding: 18px;
  box-shadow: 4px 4px 0 var(--border);
}

.card h3 {
  margin-top: 0;
  font-family: "Space Grotesk", sans-serif;
}

.kicker {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  border: 1px solid var(--border);
  padding: 4px 8px;
  font-size: 0.75rem;
  font-family: "IBM Plex Mono", monospace;
  background: #fff;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}

.timeline-item {
  border-top: 3px solid var(--border);
  padding-top: 12px;
}

.code-block {
  background: #101010;
  color: #f0f0f0;
  padding: 18px;
  font-family: "IBM Plex Mono", monospace;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.callout-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.callout-list li {
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.gallery figure {
  margin: 0;
}

.gallery figcaption {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 8px;
}

/* ── Problem / Solution ──────────────────────────── */
.problem-solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 2px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.problem-col,
.solution-col {
  padding: 32px;
}

.problem-col {
  border-right: 2px solid var(--border);
}

.ps-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 10px;
  border: 2px solid var(--border);
  display: inline-block;
  margin-bottom: 20px;
}

.problem-col .ps-label {
  background: var(--ink);
  color: #fff;
}

.solution-col .ps-label {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.ps-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.ps-list li {
  padding: 12px 16px;
  border: 1px solid var(--grid-line);
  font-size: 0.95rem;
  line-height: 1.45;
}

.solution-col .ps-list li {
  border-left: 4px solid var(--accent-3);
}

@media (max-width: 700px) {
  .problem-solution { grid-template-columns: 1fr; }
  .problem-col { border-right: none; border-bottom: 2px solid var(--border); }
}

/* ── 3-tile strip ────────────────────────────────── */
.strip-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid var(--border);
  background: var(--surface);
}

.strip-tile {
  border-right: 2px solid var(--border);
  display: flex;
  flex-direction: column;
}

.strip-tile:last-child { border-right: none; }

.strip-tile img {
  width: 100%;
  object-fit: cover;
  object-position: top;
  max-height: 200px;
  border-bottom: 2px solid var(--border);
}

.strip-tile-label {
  padding: 12px 14px 4px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

.strip-tile-caption {
  padding: 2px 14px 14px;
  font-size: 0.85rem;
  color: var(--muted);
  flex: 1;
}

@media (max-width: 700px) {
  .strip-3 { grid-template-columns: 1fr; }
  .strip-tile { border-right: none; border-bottom: 2px solid var(--border); }
  .strip-tile:last-child { border-bottom: none; }
}

/* ── Topology frames (two browser-frames side by side) ── */
.topo-frames {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 700px) {
  .topo-frames { grid-template-columns: 1fr; }
}

/* ── Use cases ───────────────────────────────────── */
.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.use-case-card {
  border: 2px solid var(--border);
  background: var(--surface);
  box-shadow: 4px 4px 0 var(--border);
  padding: 20px;
}

.use-case-card .uc-index {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 8px;
}

.use-case-card h3 {
  font-family: "Space Grotesk", sans-serif;
  margin: 0 0 8px;
  font-size: 1rem;
}

.use-case-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

/* ── Code block label ────────────────────────────── */
.code-block-wrap {
  display: flex;
  flex-direction: column;
}

.code-block-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: var(--border);
  color: #fff;
  padding: 6px 14px;
  display: inline-block;
  align-self: flex-start;
  margin-bottom: -2px;
}

/* ── Discovery frames (two stacked browser-frames) ── */
.discovery-frames {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 700px) {
  .discovery-frames { grid-template-columns: 1fr; }
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  padding: 40px 0 60px;
  border-top: 2px solid var(--border);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-collage {
    order: -1;
  }
  .frame--secondary {
    top: 0;
    left: 0;
  }
}