:root {
  color-scheme: light;
  --ink: #0b1612;
  --muted: #5f6c66;
  --paper: #f5f6f2;
  --white: #ffffff;
  --night: #07130f;
  --night-soft: #0c2018;
  --green: #65e6a5;
  --green-dark: #167a4d;
  --lime: #bcf45b;
  --line: #d7ddd8;
  --orange: #ffab73;
  --max: 1180px;
  --radius: 18px;
  --shadow: 0 22px 70px rgba(1, 22, 13, 0.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}
button, select, input { font: inherit; }
a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  left: 18px;
  top: 12px;
  transform: translateY(-150%);
  background: white;
  color: var(--ink);
  padding: 9px 13px;
  border-radius: 8px;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 5;
  inset: 0 0 auto;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: auto;
  padding: 0 30px;
  color: #eaf9f1;
}
.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: inherit;
  text-decoration: none;
  font-weight: 720;
  letter-spacing: -0.02em;
}
.brand span { color: var(--green); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.reviewed { color: #95aba1; font-size: 0.77rem; letter-spacing: .08em; text-transform: uppercase; }

.hero {
  position: relative;
  min-height: 770px;
  padding: 150px max(30px, calc((100vw - var(--max)) / 2 + 30px)) 75px;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 76% 31%, rgba(80, 227, 151, .16), transparent 24%),
    radial-gradient(circle at 96% 80%, rgba(177, 243, 85, .07), transparent 25%),
    linear-gradient(125deg, #06110d 0%, #0a1a14 70%, #0d2419 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .16;
  background-image: linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, transparent 20%, #000);
  pointer-events: none;
}
.hero::after {
  content: ">";
  position: absolute;
  right: -30px;
  top: 80px;
  font: 700 500px/1 ui-monospace, monospace;
  color: transparent;
  -webkit-text-stroke: 1px rgba(103, 230, 166, .13);
  transform: rotate(-2deg);
  pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.eyebrow, .kicker {
  margin: 0 0 18px;
  color: var(--green-dark);
  font: 750 .75rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero .eyebrow { color: var(--green); display: flex; align-items: center; gap: 10px; }
.eyebrow span { display: block; width: 32px; height: 2px; background: var(--green); }
.hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(3.1rem, 7vw, 6.6rem);
  line-height: .95;
  letter-spacing: -.072em;
  font-weight: 650;
}
.dek {
  max-width: 700px;
  margin: 28px 0 38px;
  color: #b8c9c1;
  font-size: clamp(1.05rem, 1.6vw, 1.27rem);
}

.selector-card {
  width: min(950px, 100%);
  background: rgba(255,255,255,.97);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 22px 24px 16px;
  box-shadow: 0 30px 85px rgba(0,0,0,.3);
}
.platform-toggle { border: 0; margin: 0 0 18px; padding: 0; display: flex; align-items: center; gap: 16px; }
.platform-toggle legend { float: left; margin: 0 16px 0 0; color: var(--muted); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.toggle-options { display: inline-flex; padding: 4px; border-radius: 10px; background: #edf1ed; }
.toggle-options label { position: relative; cursor: pointer; }
.toggle-options input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-options span { display: block; padding: 7px 13px; border-radius: 7px; color: #56635d; font-size: .86rem; font-weight: 680; }
.toggle-options input:checked + span { color: #0a2b1d; background: white; box-shadow: 0 2px 8px rgba(7,19,15,.1); }
.toggle-options input:focus-visible + span { outline: 3px solid rgba(22,122,77,.32); }
.release-selectors { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: end; }
.release-selectors label { display: grid; gap: 7px; }
.release-selectors label > span { color: var(--muted); font-size: .77rem; font-weight: 720; letter-spacing: .07em; text-transform: uppercase; }
.release-selectors select {
  width: 100%;
  min-height: 58px;
  padding: 0 48px 0 15px;
  border: 1px solid #cdd5d0;
  border-radius: 10px;
  color: #0a261b;
  background: #fbfcfa;
  font-size: 1.15rem;
  font-weight: 720;
}
.release-selectors select:focus { outline: 3px solid rgba(59, 190, 123, .25); border-color: var(--green-dark); }
.arrow { padding-bottom: 15px; color: var(--green-dark); font-size: 1.5rem; }
.selection-note { min-height: 1.4em; margin: 13px 0 0; color: var(--muted); font-size: .87rem; }
.scroll-cue { margin-top: 30px; color: #738d81; font: 700 .69rem/1 ui-monospace, monospace; letter-spacing: .1em; }
.scroll-cue span { margin-left: 8px; color: var(--green); font-size: 1rem; }

.section { max-width: var(--max); margin: 0 auto; padding: 110px 30px; }
.section-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 60px; align-items: end; margin-bottom: 45px; }
.section-head h2, .source-card h2 { margin: 0; font-size: clamp(2.15rem, 4vw, 4rem); line-height: 1; letter-spacing: -.05em; }
.section-head > p { max-width: 470px; margin: 0; color: var(--muted); font-size: 1.03rem; }

.path-section { padding-bottom: 80px; }
.path-card { overflow: auto; padding: 38px 34px 28px; background: white; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.path-line { display: flex; align-items: center; min-width: max-content; }
.path-node { display: grid; place-items: center; min-width: 118px; gap: 7px; }
.path-node strong { display: grid; place-items: center; min-width: 96px; min-height: 64px; padding: 0 12px; border: 1px solid #bfc9c3; border-radius: 12px; background: #f6f8f5; font-size: 1.2rem; }
.path-node.target strong { border-color: #2caf70; background: #dff8ea; color: #0a5b37; box-shadow: inset 0 0 0 1px #75dca6; }
.path-node.start strong { background: var(--night); color: white; border-color: var(--night); }
.path-node.migration-node { min-width: 148px; }
.path-node.migration-node strong { min-width: 132px; max-width: 168px; min-height: 68px; padding: 10px 13px; text-align: center; font-size: .98rem; line-height: 1.18; }
.node-label { color: #7d8983; font: 700 .63rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.target .node-label { color: var(--green-dark); }
.path-connector { position: relative; width: clamp(38px, 6vw, 86px); height: 1px; margin-top: 21px; background: #aebbb4; }
.path-connector::after { content: ""; position: absolute; right: -1px; top: -3px; width: 7px; height: 7px; border-top: 1px solid #85958c; border-right: 1px solid #85958c; transform: rotate(45deg); }
.path-caption { margin: 25px 0 0; color: var(--muted); font-size: .87rem; }
.source-link { color: var(--green-dark); font-weight: 720; text-decoration: none; white-space: nowrap; }
.source-link:hover { text-decoration: underline; }

.approach-section { padding-top: 35px; }
.approach-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.approach-card { display: flex; flex-direction: column; min-height: 350px; padding: 26px; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: 0 14px 36px rgba(8, 32, 21, .06); }
.approach-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.approach-top h3 { margin: 0; font-size: 1.45rem; letter-spacing: -.03em; }
.approach-top span { padding: 5px 9px; border-radius: 100px; color: #0e6840; background: #e2f7eb; font: 700 .7rem/1.2 ui-monospace, monospace; white-space: nowrap; }
.approach-card > p { margin: 22px 0 17px; color: var(--muted); }
.approach-card ul { display: grid; gap: 8px; margin: 0 0 24px; padding: 0; list-style: none; font-size: .88rem; }
.approach-card li { position: relative; padding-left: 20px; }
.approach-card li::before { content: "✓"; position: absolute; left: 0; color: var(--green-dark); font-weight: 800; }
.tradeoff { margin-top: auto; padding-top: 16px; border-top: 1px solid #e4e9e5; color: var(--muted); font-size: .82rem; }
.tradeoff strong { color: #733b1c; }
.approach-note { max-width: 850px; margin: 20px 0 0; color: var(--muted); font-size: .86rem; }

.value-section { max-width: none; padding-left: max(30px, calc((100vw - var(--max)) / 2 + 30px)); padding-right: max(30px, calc((100vw - var(--max)) / 2 + 30px)); background: white; }
.value-section .section-head { max-width: var(--max); margin-left: auto; margin-right: auto; }
.value-band { max-width: var(--max); margin: 0 auto 28px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.value-band div { padding: 23px 27px; display: flex; align-items: baseline; gap: 12px; background: #f8faf7; }
.value-band div + div { border-left: 1px solid var(--line); }
.value-band strong { font-size: 2.1rem; letter-spacing: -.05em; color: #0f6c43; }
.value-band span { color: var(--muted); font-size: .85rem; }
.filter-row { max-width: var(--max); margin: 0 auto 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.filter-row button { padding: 8px 13px; border: 1px solid #cbd3ce; border-radius: 100px; background: white; color: #52615a; cursor: pointer; font-size: .81rem; font-weight: 670; }
.filter-row button[aria-pressed="true"] { background: var(--night); color: white; border-color: var(--night); }
.filter-row button:focus-visible { outline: 3px solid rgba(22,122,77,.28); }
.benefit-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.benefit-card { min-height: 310px; display: flex; flex-direction: column; padding: 23px; border: 1px solid var(--line); border-radius: 14px; background: white; transition: transform .2s ease, box-shadow .2s ease; }
.benefit-card:hover { transform: translateY(-3px); box-shadow: 0 18px 38px rgba(8, 32, 21, .08); }
.benefit-top { display: flex; align-items: center; gap: 8px; color: #64736c; font: 700 .66rem/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .06em; }
.benefit-icon { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: #e5f8ed; color: #137447; font: 800 1rem/1 system-ui; }
.outcome { margin: 24px 0 6px; color: var(--green-dark); font-size: .78rem; font-weight: 750; text-transform: uppercase; letter-spacing: .04em; }
.benefit-card h3 { margin: 0; font-size: 1.32rem; line-height: 1.18; letter-spacing: -.025em; }
.benefit-card .detail { margin: 13px 0 22px; color: var(--muted); font-size: .91rem; }
.benefit-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 15px; border-top: 1px solid #e5e9e6; color: #748078; font-size: .75rem; }
.benefit-foot .source-link { font-size: .77rem; }

.readiness-section { padding-top: 105px; }
.readiness-list { border-top: 1px solid #cbd3ce; }
.readiness-item { display: grid; grid-template-columns: 64px 1fr auto; gap: 26px; align-items: center; padding: 28px 6px; border-bottom: 1px solid #cbd3ce; }
.readiness-number { color: #9aa59f; font: 500 .8rem/1 ui-monospace, monospace; }
.readiness-meta { display: flex; gap: 10px; align-items: center; color: #78847e; font-size: .74rem; }
.level { padding: 4px 8px; border-radius: 5px; font: 750 .65rem/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .04em; }
.level.blocker { color: #832e00; background: #ffe7d8; }
.level.test { color: #634d00; background: #fff2bd; }
.level.validate, .level.plan { color: #0b6040; background: #dff5e9; }
.level.first { color: #064f5f; background: #d9f3f8; }
.level.decision { color: #4f3d78; background: #eee7ff; }
.level.operate { color: #174e31; background: #d9efe2; }
.readiness-copy h3 { margin: 9px 0 5px; font-size: 1.18rem; }
.readiness-copy p { max-width: 790px; margin: 0; color: var(--muted); font-size: .91rem; }
.guidance-link { color: var(--green-dark); font-size: .8rem; font-weight: 720; text-decoration: none; white-space: nowrap; }
.guidance-link:hover { text-decoration: underline; }
.empty-state { display: flex; gap: 20px; align-items: center; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.empty-state > span { display: grid; place-items: center; flex: 0 0 48px; height: 48px; border-radius: 50%; color: #0c7044; background: #dcf6e7; font-size: 1.3rem; }
.empty-state h3, .empty-state p { margin: 0; }
.empty-state p { margin-top: 4px; color: var(--muted); }

.source-section { padding-top: 20px; }
.source-card { display: flex; align-items: end; justify-content: space-between; gap: 50px; padding: 52px; overflow: hidden; position: relative; border-radius: 22px; background: var(--night); color: white; }
.source-card::after { content: "↗"; position: absolute; right: 20%; top: -45px; color: rgba(101,230,165,.08); font-size: 190px; }
.source-card .kicker { color: var(--green); }
.source-actions { position: relative; z-index: 1; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.primary-link, .secondary-link { display: inline-flex; align-items: center; gap: 9px; min-height: 46px; padding: 0 17px; border-radius: 8px; font-size: .84rem; font-weight: 740; text-decoration: none; }
.primary-link { background: var(--green); color: #062416; }
.secondary-link { border: 1px solid #587065; color: #d8e7df; }
.primary-link:hover { background: #83ecb6; }
.secondary-link:hover { border-color: var(--green); }

.site-footer { display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; max-width: var(--max); margin: 0 auto; padding: 25px 30px 55px; color: #748078; font-size: .78rem; }
.site-footer p { margin: 0; }
.site-footer strong { color: #435149; }
.footer-copy, .footer-meta { display: grid; align-content: start; gap: 14px; }
.github-link { display: inline-flex; align-items: center; justify-self: start; gap: 9px; min-height: 42px; padding: 0 14px; border-radius: 9px; color: #eaf9f1; background: var(--night); font-weight: 740; text-decoration: none; transition: color .2s ease, background .2s ease, transform .2s ease; }
.github-link svg { width: 20px; height: 20px; fill: currentColor; }
.github-link:hover { color: var(--night); background: var(--green); transform: translateY(-2px); }
.github-link:focus-visible { outline: 3px solid rgba(22,122,77,.3); outline-offset: 3px; }

@media (max-width: 900px) {
  .hero { min-height: auto; padding-top: 135px; }
  .hero::after { right: -170px; }
  .section-head { grid-template-columns: 1fr; gap: 17px; }
  .benefit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-card { min-height: auto; }
  .readiness-item { grid-template-columns: 44px 1fr; }
  .guidance-link { grid-column: 2; justify-self: start; }
  .source-card { align-items: start; flex-direction: column; }
  .source-actions { justify-content: flex-start; }
}

@media (max-width: 650px) {
  .site-header { height: 67px; padding: 0 20px; }
  .brand { font-size: .92rem; }
  .reviewed { display: none; }
  .hero { padding: 118px 20px 58px; }
  .hero h1 { font-size: clamp(3rem, 14vw, 4.6rem); }
  .dek { margin-top: 22px; }
  .selector-card { padding: 18px 16px 13px; }
  .platform-toggle { display: block; }
  .platform-toggle legend { float: none; margin: 0 0 8px; }
  .toggle-options { display: grid; grid-template-columns: 1fr; width: 100%; }
  .toggle-options span { text-align: center; padding-left: 8px; padding-right: 8px; font-size: .78rem; }
  .release-selectors { grid-template-columns: 1fr; gap: 12px; }
  .arrow { display: none; }
  .release-selectors select { min-height: 52px; }
  .scroll-cue { display: none; }
  .section { padding: 78px 20px; }
  .path-section { padding-bottom: 65px; }
  .path-card { padding: 27px 20px 22px; border-radius: 14px; }
  .value-section { padding-left: 20px; padding-right: 20px; }
  .value-band { grid-template-columns: 1fr; }
  .value-band div + div { border-left: 0; border-top: 1px solid var(--line); }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-card { min-height: 285px; }
  .readiness-item { grid-template-columns: 32px 1fr; gap: 12px; align-items: start; }
  .guidance-link { grid-column: 2; }
  .source-section { padding-top: 0; }
  .source-card { padding: 34px 25px; }
  .source-actions { display: grid; width: 100%; }
  .primary-link, .secondary-link { justify-content: center; }
  .site-footer { grid-template-columns: 1fr; gap: 22px; padding: 0 20px 40px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .benefit-card { transition: none; }
}