:root {
  --ink: #14231f;
  --ink-2: #294139;
  --muted: #66766f;
  --paper: #f5f6f2;
  --white: #ffffff;
  --line: #d9dfd9;
  --green: #1f654f;
  --green-dark: #174c3c;
  --mint: #dcece4;
  --sage: #e9efe9;
  --warm: #f1eee5;
  --radius: 18px;
  --shadow: 0 16px 50px rgba(20,35,31,.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(860px, calc(100% - 40px)); }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(245,246,242,.93); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(217,223,217,.85); }
.header-inner { min-height: 78px; display: flex; align-items: center; gap: 30px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand-mark { position: relative; width: 31px; height: 31px; display: block; }
.brand-mark span { position: absolute; display: block; border-radius: 999px; background: var(--green); }
.brand-mark span:nth-child(1) { width: 12px; height: 12px; top: 2px; right: 2px; }
.brand-mark span:nth-child(2) { width: 8px; height: 18px; left: 7px; bottom: 3px; transform: rotate(38deg); transform-origin: bottom; }
.brand-mark span:nth-child(3) { width: 11px; height: 11px; left: 1px; bottom: 0; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy strong { font-size: 17px; letter-spacing: -.02em; }
.brand-copy small { color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-top: 4px; }
.primary-nav { display: flex; gap: 4px; align-items: center; }
.primary-nav a { text-decoration: none; color: var(--ink-2); font-size: 14px; font-weight: 600; padding: 10px 10px; border-radius: 10px; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { background: var(--sage); color: var(--green-dark); }
.nav-toggle { display: none; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 20px; border-radius: 12px; border: 1px solid var(--green); background: var(--green); color: white; text-decoration: none; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer; transition: .18s ease; }
.button:hover { background: var(--green-dark); border-color: var(--green-dark); transform: translateY(-1px); }
.button-secondary { background: transparent; color: var(--ink); border-color: #b8c4bd; }
.button-secondary:hover { color: var(--green-dark); background: white; border-color: var(--green); }
.button-small { min-height: 41px; padding: 0 15px; }
.hero { padding: 92px 0 80px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(340px, .8fr); gap: 74px; align-items: center; }
.eyebrow { color: var(--green); text-transform: uppercase; letter-spacing: .13em; font-size: 12px; font-weight: 800; margin-bottom: 18px; }
h1,h2,h3,p { margin-top: 0; }
h1 { font-size: clamp(46px, 6vw, 78px); line-height: .99; letter-spacing: -.055em; margin-bottom: 28px; max-width: 900px; }
h1 span { color: var(--green); }
h2 { font-size: clamp(31px, 4vw, 48px); line-height: 1.05; letter-spacing: -.04em; margin-bottom: 20px; }
h3 { font-size: 20px; letter-spacing: -.025em; margin-bottom: 10px; }
.lead { color: var(--ink-2); font-size: clamp(18px, 2vw, 22px); max-width: 760px; line-height: 1.55; }
.hero .lead { max-width: 720px; }
.hero blockquote { margin: 32px 0; padding: 18px 0 18px 24px; border-left: 3px solid var(--green); font-size: 19px; font-weight: 750; letter-spacing: -.015em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-panel { background: var(--ink); color: white; border-radius: 24px; padding: 30px; box-shadow: var(--shadow); }
.panel-label { color: #aac5b8; text-transform: uppercase; letter-spacing: .13em; font-size: 11px; font-weight: 800; margin-bottom: 22px; }
.flow-card { display: flex; gap: 16px; align-items: flex-start; }
.flow-card > span { flex: 0 0 36px; height: 36px; border-radius: 10px; background: #214c3e; display: grid; place-items: center; color: #cde0d7; font-size: 11px; font-weight: 800; }
.flow-card strong, .flow-card small { display: block; }
.flow-card strong { margin: 1px 0 3px; font-size: 15px; }
.flow-card small { color: #aec0b9; line-height: 1.4; }
.flow-line { height: 22px; width: 1px; background: #39564d; margin: 5px 0 5px 18px; }
.lookup-band { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 48px 0; }
.lookup-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 60px; align-items: end; }
.lookup-grid h2 { font-size: 34px; margin-bottom: 10px; }
.lookup-grid p { color: var(--muted); margin-bottom: 0; }
.lookup-form label, .evidence-form label { display: block; font-size: 13px; font-weight: 750; margin-bottom: 8px; }
.lookup-row { display: grid; grid-template-columns: minmax(0,1fr) 105px auto; gap: 9px; }
input, select { width: 100%; border: 1px solid #c6d0ca; background: #fbfcfa; min-height: 48px; border-radius: 11px; padding: 0 14px; color: var(--ink); font: inherit; font-size: 14px; }
input:focus, select:focus { outline: 3px solid rgba(31,101,79,.13); border-color: var(--green); }
.lookup-form small { display: block; color: var(--muted); margin-top: 10px; }
.section { padding: 86px 0; }
.no-top { padding-top: 24px; }
.soft { background: var(--sage); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.audience-card { min-height: 335px; border: 1px solid var(--line); border-radius: var(--radius); background: white; padding: 38px; display: flex; flex-direction: column; box-shadow: 0 10px 35px rgba(20,35,31,.04); }
.audience-card h2 { font-size: 39px; max-width: 480px; }
.audience-card p { color: var(--muted); max-width: 570px; font-size: 17px; }
.card-kicker { font-size: 12px; letter-spacing: .13em; font-weight: 800; text-transform: uppercase; color: var(--green); margin-bottom: 42px; }
.text-link { margin-top: auto; text-decoration: none; font-weight: 750; color: var(--green-dark); }
.text-link span { transition: .18s ease; display: inline-block; margin-left: 4px; }
.text-link:hover span { transform: translateX(4px); }
.proof-section { background: var(--warm); }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 76px; align-items: start; }
.large-copy { font-size: 20px; color: var(--ink-2); line-height: 1.65; }
.quote-panel { background: white; border-radius: var(--radius); padding: 42px; border: 1px solid #e0ddd3; box-shadow: var(--shadow); }
.quote-panel .quote-mark { display: block; color: var(--green); font-family: Georgia, serif; font-size: 76px; height: 48px; line-height: 1; }
.quote-panel p { font-size: 28px; font-weight: 750; letter-spacing: -.03em; line-height: 1.25; }
.quote-panel small { color: var(--muted); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 38px; }
.section-heading h2 { max-width: 720px; margin-bottom: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.feature-grid article { border-top: 1px solid #aebbb4; padding-top: 22px; }
.feature-grid article > span, .api-type { display: inline-flex; border: 1px solid #b9c5be; border-radius: 999px; padding: 4px 8px; font-size: 10px; letter-spacing: .1em; color: var(--green-dark); font-weight: 850; margin-bottom: 24px; }
.feature-grid p { color: var(--muted); font-size: 15px; }
.principle-section { background: var(--ink); color: white; padding: 82px 0; }
.principle-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.principle-inner .eyebrow { color: #9cc3b1; }
.principle-inner h2 { max-width: 600px; }
.principle-list { display: grid; gap: 0; }
.principle-list p { border-top: 1px solid rgba(255,255,255,.18); margin: 0; padding: 18px 0; color: #c6d5ce; }
.principle-list p:last-child { border-bottom: 1px solid rgba(255,255,255,.18); }
.page-hero { padding: 86px 0 58px; }
.page-hero.compact { padding-bottom: 40px; }
.page-hero h1 { font-size: clamp(44px, 5.5vw, 68px); }
.seller-rule { margin-top: 34px; padding: 22px 24px; border: 1px solid #c9d5ce; background: white; border-radius: 14px; font-weight: 750; max-width: 760px; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.content-grid article, .methodology-grid article { background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.step { color: var(--green); font-size: 12px; font-weight: 850; letter-spacing: .12em; }
.content-grid h3 { margin-top: 30px; }
.content-grid p, .methodology-grid p { color: var(--muted); margin-bottom: 0; }
.do-not-card { background: var(--ink); color: white; border-radius: var(--radius); padding: 32px; display: grid; gap: 8px; }
.do-not-card strong { margin-bottom: 10px; }
.do-not-card code { background: #203831; color: #cfe0d8; border-radius: 8px; padding: 8px 11px; font-size: 13px; }
.process-list { border-top: 1px solid var(--line); }
.process-list > div { display: grid; grid-template-columns: 70px .8fr 1.2fr; gap: 30px; padding: 24px 0; border-bottom: 1px solid var(--line); align-items: start; }
.process-list span { color: var(--green); font-weight: 850; font-size: 12px; letter-spacing: .1em; }
.process-list strong { font-size: 18px; }
.process-list p { color: var(--muted); margin-bottom: 0; }
.principle-list.dark p { color: var(--ink-2); border-color: #cbd5cf; }
.request-card { display: flex; justify-content: space-between; gap: 40px; align-items: center; border: 1px solid var(--line); background: white; border-radius: var(--radius); padding: 36px; }
.request-card h2 { font-size: 35px; }
.request-card p { color: var(--muted); max-width: 650px; margin-bottom: 0; }
.tool-panel { background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.evidence-form { display: grid; grid-template-columns: minmax(0,1fr) 120px auto; gap: 10px; align-items: end; }
.evidence-form label:first-child { grid-column: 1; }
.evidence-form #endpoint { grid-column: 1; }
.evidence-form label[for="method"] { grid-column: 2; grid-row: 1; }
.evidence-form #method { grid-column: 2; grid-row: 2; }
.evidence-form button { grid-column: 3; grid-row: 2; }
.tool-note { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 22px; color: var(--muted); }
.tool-note strong { color: var(--ink); }
.info-strip { margin-top: 22px; padding: 18px 20px; border-left: 3px solid var(--green); background: var(--sage); }
.dev-stack { display: grid; gap: 18px; }
.dev-stack article { border: 1px solid var(--line); background: white; border-radius: var(--radius); padding: 32px; }
.dev-stack article h2 { font-size: 30px; }
.dev-stack article p { color: var(--muted); }
pre { overflow-x: auto; background: #14231f; color: #dbe7e1; padding: 20px; border-radius: 12px; font-size: 13px; line-height: 1.6; }
.methodology-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.methodology-grid h2 { font-size: 27px; }
.site-footer { background: #0d1815; color: white; padding: 46px 0; }
.footer-grid { display: grid; grid-template-columns: .7fr 1.6fr .7fr; gap: 46px; align-items: start; }
.footer-brand { font-weight: 800; }
.site-footer p, .footer-links a { color: #9fb2aa; font-size: 14px; }
.footer-principle span, .footer-principle strong { display: block; }
.footer-principle span { color: #81968d; text-transform: uppercase; font-size: 10px; letter-spacing: .12em; margin-bottom: 8px; }
.footer-principle strong { max-width: 500px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: white; }
@media (max-width: 940px) {
  .hero-grid, .lookup-grid, .split, .principle-inner { grid-template-columns: 1fr; gap: 38px; }
  .hero { padding-top: 64px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .primary-nav { position: absolute; left: 20px; right: 20px; top: 70px; display: none; background: white; border: 1px solid var(--line); border-radius: 14px; padding: 8px; box-shadow: var(--shadow); }
  .primary-nav.is-open { display: grid; }
  .nav-toggle { display: block; border: 0; background: transparent; color: var(--ink); font-weight: 700; }
  .header-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-principle { grid-column: 1 / -1; grid-row: 1; }
}
@media (max-width: 680px) {
  .shell, .narrow { width: min(100% - 28px, 1180px); }
  .header-inner { min-height: 68px; }
  h1 { font-size: 46px; }
  .hero { padding: 48px 0 54px; }
  .lookup-row, .evidence-form { grid-template-columns: 1fr; }
  .lookup-row select, .lookup-row button { width: 100%; }
  .audience-grid, .content-grid, .feature-grid, .methodology-grid { grid-template-columns: 1fr; }
  .audience-card { min-height: auto; }
  .card-kicker { margin-bottom: 28px; }
  .section { padding: 58px 0; }
  .section-heading, .request-card { display: grid; align-items: start; }
  .process-list > div { grid-template-columns: 46px 1fr; gap: 16px; }
  .process-list p { grid-column: 2; }
  .evidence-form label:first-child, .evidence-form #endpoint, .evidence-form label[for="method"], .evidence-form #method, .evidence-form button { grid-column: 1; grid-row: auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-principle { grid-column: auto; grid-row: auto; }
}