:root {
  --ink: #0b1014;
  --text: #252a2e;
  --muted: #5f676b;
  --line: #d9ddd8;
  --paper: #fbfaf6;
  --warm: #f3efe6;
  --white: #ffffff;
  --green: #557568;
  --green-dark: #405f53;
  --blue: #2f6f89;
  --amber: #b48343;
  --shadow: 0 18px 45px rgba(11, 16, 20, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

img,
svg {
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 221, 216, 0.9);
  background: rgba(251, 250, 246, 0.96);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 15px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
  text-decoration: none;
}

.brand img {
  display: block;
  width: 178px;
  height: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  min-width: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

.nav-cta {
  border: 1px solid var(--ink);
  border-radius: 4px;
  padding: 9px 12px;
  color: var(--ink);
}

.section {
  padding: 84px 0;
}

.section.tight {
  padding: 54px 0;
}

.section.alt {
  background: var(--warm);
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(820px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 86px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  line-height: 1.1;
}

h1 {
  max-width: 780px;
  font-size: 3.2rem;
  font-weight: 760;
}

h2 {
  font-size: 2rem;
  font-weight: 740;
}

h3 {
  font-size: 1.12rem;
  font-weight: 740;
}

.lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: #394044;
  font-size: 1.15rem;
}

.section-lead {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 4px;
  padding: 10px 16px;
  border: 1px solid var(--green);
  background: var(--green);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible {
  border-color: var(--green-dark);
  background: var(--green-dark);
  color: var(--white);
}

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

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--green);
  background: rgba(85, 117, 104, 0.08);
  color: var(--ink);
}

.button.muted {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
}

.trust-line {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.visual-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 26px;
}

.system-map {
  display: grid;
  gap: 14px;
}

.system-row {
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  align-items: center;
  gap: 14px;
}

.node,
.center-node {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  padding: 12px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
}

.center-node {
  border-color: rgba(85, 117, 104, 0.5);
  border-radius: 3px;
  background: linear-gradient(90deg, rgba(85, 117, 104, 0.08), rgba(85, 117, 104, 0.15), rgba(85, 117, 104, 0.08));
  color: var(--ink);
  text-align: center;
}

.bridge-line {
  height: 2px;
  background: var(--green);
}

.mini-label {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.88rem;
}

.media-section {
  border-top: 1px solid rgba(217, 221, 216, 0.75);
  border-bottom: 1px solid rgba(217, 221, 216, 0.75);
}

.media-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(0, 1.26fr);
  gap: 42px;
  align-items: center;
}

.media-copy {
  max-width: 460px;
}

.media-feature video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--warm);
  box-shadow: var(--shadow);
}

.transcript {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.transcript summary {
  color: var(--ink);
  cursor: pointer;
  font-weight: 700;
}

.transcript p {
  margin: 12px 0 0;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 18px;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.step,
.callout {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 22px;
}

.card h3,
.step h3,
.callout h3 {
  margin-bottom: 10px;
}

.card p,
.step p,
.callout p {
  margin: 0;
  color: var(--muted);
}

.accent-card {
  border-top: 4px solid var(--green);
}

.blue-card {
  border-top: 4px solid var(--blue);
}

.amber-card {
  border-top: 4px solid var(--amber);
}

.list-clean {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.list-clean li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
}

.list-clean li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--green);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 34px;
  align-items: start;
}

.process {
  counter-reset: step;
  display: grid;
  gap: 14px;
}

.step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 4px;
  background: var(--green);
  color: var(--white);
  font-weight: 700;
}

.page-intro {
  border-bottom: 1px solid var(--line);
  padding: 70px 0 56px;
}

.page-intro h1 {
  font-size: 2.75rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  padding: 7px 10px;
  color: var(--muted);
  font-size: 0.84rem;
}

.placeholder-panel {
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--white);
  padding: 26px;
}

.placeholder-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--warm);
  color: var(--ink);
  padding: 10px 14px;
  font-weight: 700;
}

.article-list {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.article-card {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 24px;
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.article-card:hover,
.article-card:focus-visible {
  border-color: rgba(85, 117, 104, 0.55);
  box-shadow: var(--shadow);
}

.article-meta {
  color: var(--green);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
}

.article-card p {
  margin: 0;
  color: var(--muted);
}

.article-body {
  padding: 64px 0;
}

.article-body article {
  width: min(820px, calc(100% - 32px));
  margin: 0 auto;
}

.article-body h2 {
  margin-top: 42px;
}

.article-body h3 {
  margin-top: 28px;
}

.article-body p,
.article-body li {
  color: var(--text);
}

.article-body p {
  margin: 18px 0 0;
}

.article-body ul {
  margin: 16px 0 0;
  padding-left: 22px;
}

.article-body pre {
  overflow-x: auto;
  margin: 24px 0 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  padding: 18px;
}

.article-body code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92rem;
}

.article-body .callout {
  margin-top: 34px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--white);
  padding: 42px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
}

.footer-logo {
  width: 160px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.74);
  text-decoration: none;
}

.footer-note {
  max-width: 560px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.68);
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero-grid,
  .media-grid,
  .split,
  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1,
  .page-intro h1 {
    font-size: 2.35rem;
  }

  .hero {
    padding-top: 58px;
  }

  .media-copy {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .brand img {
    width: 154px;
  }

  .nav-links {
    font-size: 0.84rem;
  }

  .section {
    padding: 58px 0;
  }

  h1,
  .page-intro h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .lead {
    font-size: 1.02rem;
  }

  .system-row {
    grid-template-columns: 1fr;
  }

  .bridge-line {
    width: 2px;
    height: 18px;
    margin: 0 auto;
  }

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