:root {
  --paper: #f4f1ea;
  --paper-deep: #e9e3d8;
  --ink: #181b1a;
  --ink-soft: #565d59;
  --line: #cbc5b9;
  --line-dark: #9c968a;
  --forest: #244c3b;
  --forest-deep: #143127;
  --moss: #6f7f5b;
  --copper: #ad5b32;
  --white: #fffdf8;
  --sans: "DM Sans", "Segoe UI", sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --max: 1180px;
  --radius: 14px;
  --shadow: 0 24px 60px rgba(30, 40, 34, 0.09);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.3;
  background-image:
    linear-gradient(rgba(36, 76, 59, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 76, 59, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

a { color: inherit; }

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

button, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--copper) 72%, white);
  outline-offset: 4px;
}

::selection { background: #d9c5a8; }

.shell {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(156, 150, 138, 0.55);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(16px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  margin-right: auto;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 650;
  text-decoration: none;
  letter-spacing: -0.025em;
}

.brand-mark { color: var(--copper); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--ink); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  gap: 9px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

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

.button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-dark);
}

.button.secondary:hover { background: var(--white); }

.button.light {
  background: var(--white);
  color: var(--forest-deep);
  border-color: var(--white);
}

.button.text {
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--forest);
}

.button.text:hover { transform: none; color: var(--copper); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--forest);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--copper);
}

h1, h2, h3, h4, p { margin-top: 0; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 580;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 { font-size: clamp(48px, 8vw, 88px); }
h2 { font-size: clamp(36px, 5vw, 56px); }
h3 { font-size: clamp(25px, 3vw, 34px); }
h4 { font-size: 21px; }

.muted { color: var(--ink-soft); }
.mono { font-family: var(--mono); }

.hero {
  min-height: calc(100vh - 72px);
  padding: 92px 0 64px;
  display: grid;
  align-content: space-between;
}

.hero-copy { max-width: 940px; }

.hero h1 {
  max-width: 11ch;
  margin-bottom: 28px;
}

.hero h1 em {
  color: var(--forest);
  font-weight: 470;
}

.hero-lede {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.55;
}

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

.hero-foot {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.2fr repeat(3, minmax(130px, 0.5fr));
  gap: 28px;
  align-items: end;
}

.hero-note {
  max-width: 36ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.fact strong {
  display: block;
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 600;
  line-height: 1.1;
}

.fact span {
  display: block;
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 12px;
}

.section {
  padding: 112px 0;
  border-top: 1px solid var(--line);
}

.section.compact { padding: 80px 0; }

.section-head {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  margin-bottom: 56px;
  align-items: start;
}

.section-head h2 { margin-bottom: 0; }

.section-intro {
  max-width: 640px;
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.tech-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
}

.tech-group {
  padding: 26px 22px 10px 0;
  border-right: 1px solid var(--line);
}

.tech-group + .tech-group { padding-left: 22px; }
.tech-group:last-child { border-right: 0; }

.tech-group h3 {
  margin-bottom: 14px;
  color: var(--forest);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tech-group p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.feature {
  padding: 38px;
  border-radius: 24px;
  background: var(--forest-deep);
  color: var(--white);
  box-shadow: var(--shadow);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
}

.feature .eyebrow { color: #c7d8cd; }

.feature h2 { max-width: 10ch; margin-bottom: 24px; }

.feature-copy {
  color: #c7d0cb;
  font-size: 17px;
}

.feature-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.screen-frame {
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 16px;
  background: #d8d0c2;
  transform: rotate(1deg);
}

.screen-frame img { aspect-ratio: 4 / 3; object-fit: cover; }

.screen-caption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 14px;
  color: #d2d9d5;
  background: rgba(0,0,0,0.14);
  font-family: var(--mono);
  font-size: 10px;
}

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

.project-card {
  min-height: 330px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.45);
}

.project-card:hover { border-color: var(--line-dark); background: var(--white); }

.project-number {
  margin-bottom: 54px;
  color: var(--copper);
  font-family: var(--mono);
  font-size: 11px;
}

.project-card h3 { margin-bottom: 14px; }

.project-card p {
  color: var(--ink-soft);
  font-size: 14px;
}

.project-meta {
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
}

.project-link {
  margin-top: 20px;
  color: var(--forest);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.principle { padding: 34px; background: var(--paper); }

.principle b {
  display: block;
  margin-bottom: 12px;
  color: var(--forest);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.principle h3 { margin-bottom: 12px; font-size: 27px; }
.principle p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.cta-panel {
  padding: 54px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: end;
  border-radius: 24px;
  background: var(--paper-deep);
}

.cta-panel h2 { max-width: 12ch; margin-bottom: 16px; }
.cta-panel p { max-width: 52ch; margin-bottom: 0; color: var(--ink-soft); }
.cta-actions { display: flex; flex-direction: column; align-items: stretch; gap: 10px; }

.page-hero { padding: 90px 0 72px; }
.page-hero h1 { max-width: 12ch; margin-bottom: 28px; }
.page-hero .lede { max-width: 760px; color: var(--ink-soft); font-size: 21px; }

.breadcrumbs {
  margin-bottom: 36px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.breadcrumbs a { text-decoration: none; }

.case-meta {
  margin-top: 42px;
  padding-top: 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  border-top: 1px solid var(--line);
}

.case-meta span {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-meta strong { font-size: 14px; }

.prose-grid {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 70px;
}

.prose-grid h2 { font-size: 42px; }

.prose {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 17px;
}

.prose p:last-child { margin-bottom: 0; }

.architecture {
  padding: 34px;
  border-radius: 20px;
  background: var(--forest-deep);
  color: var(--white);
}

.architecture-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 30px;
}

.architecture-header h2 { margin: 0; font-size: 40px; }

.architecture-header p {
  max-width: 50ch;
  margin: 0;
  color: #c7d0cb;
  font-size: 14px;
}

.architecture-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.arch-column {
  min-height: 250px;
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.17);
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
}

.arch-column span {
  color: #a9b9b0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.arch-column h3 { margin: 16px 0 22px; font-size: 23px; }

.arch-column ul {
  margin: 0;
  padding-left: 17px;
  color: #d1d8d4;
  font-size: 13px;
}

.arch-column li + li { margin-top: 8px; }

.feedback-loop {
  margin-top: 14px;
  padding: 13px 16px;
  border: 1px dashed rgba(255,255,255,0.27);
  border-radius: 10px;
  color: #cad4cf;
  font-family: var(--mono);
  font-size: 11px;
  text-align: center;
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.pipeline-step {
  position: relative;
  min-height: 175px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,253,248,0.45);
}

.pipeline-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -13px;
  z-index: 2;
  width: 16px;
  color: var(--copper);
  background: var(--paper);
  font-family: var(--mono);
  text-align: center;
  transform: translateY(-50%);
}

.pipeline-step b {
  display: block;
  margin-bottom: 24px;
  color: var(--copper);
  font-family: var(--mono);
  font-size: 11px;
}

.pipeline-step h3 { margin-bottom: 10px; font-size: 20px; }
.pipeline-step p { margin: 0; color: var(--ink-soft); font-size: 12px; }

.decision-grid,
.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.decision,
.result {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,253,248,0.4);
}

.decision span,
.result span {
  color: var(--copper);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.decision h3,
.result h3 { margin: 15px 0 12px; font-size: 25px; }
.decision p,
.result p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.tradeoff-table { border-top: 1px solid var(--line-dark); }

.tradeoff-row {
  padding: 24px 0;
  display: grid;
  grid-template-columns: 0.65fr 1fr 1fr;
  gap: 34px;
  border-bottom: 1px solid var(--line);
}

.tradeoff-row h3 { margin: 0; font-family: var(--sans); font-size: 15px; letter-spacing: 0; }
.tradeoff-row p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.resume-hero {
  padding: 80px 0 50px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 80px;
  align-items: end;
}

.resume-hero h1 { margin-bottom: 24px; font-size: clamp(46px, 7vw, 76px); }
.resume-hero p { max-width: 700px; color: var(--ink-soft); font-size: 19px; }

.availability {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,253,248,0.55);
}

.availability b { display: block; margin-bottom: 8px; font-size: 14px; }
.availability p { margin: 0; font-size: 13px; }

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

.fit-card { padding: 26px 0 0; border-top: 1px solid var(--line-dark); }
.fit-card h3 { margin-bottom: 12px; font-size: 24px; }
.fit-card p { color: var(--ink-soft); font-size: 14px; }

.timeline { border-top: 1px solid var(--line-dark); }

.timeline-item {
  padding: 28px 0;
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 40px;
  border-bottom: 1px solid var(--line);
}

.timeline-item time,
.timeline-item .place {
  display: block;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 11px;
}

.timeline-item h3 { margin-bottom: 7px; font-size: 25px; }
.timeline-item h4 { margin-bottom: 14px; color: var(--forest); font-family: var(--sans); font-size: 14px; letter-spacing: 0; }
.timeline-item ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 14px; }
.timeline-item li + li { margin-top: 8px; }

.footer {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 12px;
}

.footer-links { display: flex; gap: 18px; }
.footer-links a { text-decoration: none; }

@media (max-width: 900px) {
  .hero { min-height: auto; }
  .hero-foot { grid-template-columns: repeat(3, 1fr); }
  .hero-note { grid-column: 1 / -1; }
  .section-head,
  .prose-grid,
  .feature-grid,
  .cta-panel,
  .resume-hero { grid-template-columns: 1fr; gap: 28px; }
  .tech-list { grid-template-columns: repeat(2, 1fr); }
  .tech-group:nth-child(2) { border-right: 0; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card { min-height: 260px; }
  .architecture-flow { grid-template-columns: repeat(2, 1fr); }
  .pipeline { grid-template-columns: 1fr; }
  .pipeline-step { min-height: 0; }
  .pipeline-step:not(:last-child)::after { content: "↓"; top: auto; right: 50%; bottom: -16px; transform: translateX(50%); }
  .case-meta { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 30px, var(--max)); }
  .nav { min-height: 64px; gap: 16px; }
  .nav-links a:not(.keep-mobile) { display: none; }
  .nav-links { gap: 12px; }
  .nav .button { min-height: 38px; padding-inline: 13px; font-size: 12px; }
  .hero { padding-top: 66px; }
  .hero h1 { font-size: 50px; }
  .hero-foot { grid-template-columns: 1fr; gap: 18px; }
  .hero-note { grid-column: auto; }
  .section { padding: 78px 0; }
  .section-head { margin-bottom: 38px; }
  .tech-list { grid-template-columns: 1fr; }
  .tech-group,
  .tech-group + .tech-group { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature { padding: 24px; border-radius: 18px; }
  .feature h2 { font-size: 40px; }
  .principles,
  .decision-grid,
  .results-grid,
  .fit-grid { grid-template-columns: 1fr; }
  .cta-panel { padding: 32px 24px; }
  .page-hero { padding: 62px 0 52px; }
  .page-hero h1 { font-size: 48px; }
  .case-meta { grid-template-columns: 1fr 1fr; }
  .architecture { padding: 24px; }
  .architecture-header { display: block; }
  .architecture-header h2 { margin-bottom: 16px; }
  .architecture-flow { grid-template-columns: 1fr; }
  .tradeoff-row { grid-template-columns: 1fr; gap: 8px; }
  .timeline-item { grid-template-columns: 1fr; gap: 14px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media print {
  :root { --paper: #fff; --ink: #000; --ink-soft: #333; }
  body::before, .site-header, .footer, .no-print, .cta-panel { display: none !important; }
  .shell { width: 100%; max-width: none; }
  .resume-hero, .section { padding: 22px 0; }
  .section { break-inside: avoid; }
  .timeline-item { padding: 18px 0; }
  a { text-decoration: none; }
}