:root { color-scheme: light; --background: #f7f9f8; --text: #17201b; --muted: #52645b; --accent: #166b50; --border: #d9e3dd; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--background); color: var(--text); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 5px; }
a:focus-visible { outline: 3px solid #bd8c16; outline-offset: 5px; }
.container { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 100px; border-bottom: 1px solid var(--border); }
.wordmark { font-weight: 750; font-size: 25px; letter-spacing: -1px; text-decoration: none; }
.wordmark span { margin-left: 6px; color: var(--accent); }
nav, .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
nav a { font-size: 14px; text-decoration: none; padding-block: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 46px; padding: 12px 22px; background: var(--accent); color: white; border-radius: 6px; text-decoration: none; font-size: 14px; font-weight: 650; }
.button:hover { background: #10503c; }
.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 64px; align-items: center; padding-block: 104px 112px; }
.eyebrow { font-size: 12px; font-weight: 650; letter-spacing: 1.4px; text-transform: uppercase; color: var(--accent); margin: 0 0 20px; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.04em; font-weight: 650; text-wrap: balance; }
h1 { font-size: clamp(36px, 4vw, 54px); margin: 0 0 24px; }
h1 span { color: var(--accent); }
.keep-together { white-space: nowrap; }
h2 { font-size: clamp(32px, 3.5vw, 44px); margin: 0 0 24px; }
h3 { font-size: 24px; margin: 0 0 12px; }
.lead { font-size: 18px; color: var(--muted); max-width: 48ch; margin: 0 0 28px; }
.note { color: var(--muted); font-size: 12px; margin: 20px 0 0; }
.text-link { font-size: 14px; padding-block: 12px; }
.diagram { padding: 32px; background: white; border: 1px solid var(--border); border-radius: 12px; }
.sources { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sources span { padding: 12px 8px; border: 1px solid var(--border); border-radius: 6px; text-align: center; font-size: 12px; }
.connector { color: var(--accent); text-align: center; margin: 8px 0; }
.lake-node { display: grid; gap: 10px; background: #edf5f0; border: 1px solid #bad6c7; border-radius: 8px; padding: 24px; }
.lake-node strong { font-size: 20px; line-height: 1.3; }
.lake-node > span:last-child { font-size: 13px; color: var(--muted); }
.node-label { color: var(--accent); font-size: 12px; font-family: ui-monospace, monospace; }
.spotlight { background: #172d24; color: #f7f9f8; }
.spotlight-content { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; padding-block: 80px; }
.spotlight .eyebrow { color: #a6d7be; }
.spotlight p:not(.eyebrow) { color: #ceddd4; max-width: 48ch; }
.spotlight .button { margin-top: 14px; background: #a6d7be; color: #172d24; }
.spotlight .button:hover { background: #c5e7d5; }
.principle { border-left: 1px solid #4a6155; padding-left: 40px; }
.principle h3 { font-size: 32px; }
.approach { padding-block: 96px; display: grid; grid-template-columns: 1fr 1.2fr; column-gap: 80px; }
.approach > .eyebrow { grid-column: 1 / -1; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { display: flex; gap: 24px; padding: 0 0 24px; margin-bottom: 24px; border-bottom: 1px solid var(--border); }
.steps li:last-child { margin-bottom: 0; }
.step-number { color: var(--accent); font-family: ui-monospace, monospace; font-size: 13px; padding-top: 4px; }
.steps h3 { font-size: 20px; letter-spacing: -0.02em; }
.steps p { color: var(--muted); margin: 0; font-size: 15px; }
.closing { border-top: 1px solid var(--border); padding-block: 72px; text-align: center; }
.footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid var(--border); padding-block: 32px; }
.footer p, .footer > a:last-child { font-size: 13px; color: var(--muted); }
.skip-link { position: fixed; top: 8px; left: 8px; padding: 12px; background: white; z-index: 2; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 64px; }
  .diagram { max-width: 560px; }
  .spotlight-content { gap: 40px; }
  .approach { gap: 24px; grid-template-columns: 1fr; padding-block: 64px; }
}
@media (max-width: 600px) {
  .container { width: calc(100% - 32px); }
  .header { flex-wrap: wrap; padding-block: 20px; gap: 12px; }
  nav { width: 100%; gap: 16px; justify-content: space-between; }
  nav .button { padding-inline: 12px; }
  .hero { padding-block: 48px; }
  h1 { font-size: 32px; }
  .diagram { padding: 20px; }
  .spotlight-content { grid-template-columns: 1fr; padding-block: 48px; }
  .principle { border-left: 0; border-top: 1px solid #4a6155; padding: 32px 0 0; }
  .closing { padding-block: 48px; }
  .footer { gap: 12px; }
  .footer p { width: 100%; margin: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }