:root {
  --paper: #f2f5f7;
  --paper-raised: #ffffff;
  --ink: #16232e;
  --ink-soft: #4a5a67;
  --ink-faint: #74838f;
  --rule: #d3dce2;
  --blue: #1f5fd1;
  --blue-deep: #17489f;
  --red: #b8372c;
  --red-wash: #fbe9e7;
  --green: #2b7652;
  --green-wash: #e3f3ea;
  --amber: #8a5a00;
  --amber-wash: #fdf1d6;
  --sans: 'Schibsted Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --paper: #0f1a22;
    --paper-raised: #16232e;
    --ink: #e6edf2;
    --ink-soft: #b2c0ca;
    --ink-faint: #8495a2;
    --rule: #2a3a46;
    --blue: #7fa9f5;
    --blue-deep: #a9c4f8;
    --red: #f08a7e;
    --red-wash: #3a1f1d;
    --green: #7fcfa3;
    --green-wash: #17322a;
    --amber: #f0c36d;
    --amber-wash: #352a12;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
  font-feature-settings: 'ss01';
}
img, svg { max-width: 100%; }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-deep); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 2px; }
code, pre { font-family: var(--mono); font-size: 0.86em; }
:not(pre) > code { background: var(--paper-raised); border: 1px solid var(--rule); border-radius: 4px; padding: 0.05em 0.3em; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.prose { max-width: var(--measure); }

/* Header */
.site-head { border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.logo svg { width: 26px; height: 26px; }
.site-nav { display: flex; gap: 22px; font-size: 15px; }
.site-nav a { color: var(--ink-soft); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current='page'] { color: var(--ink); }

/* Type scale (1.25 ratio) */
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }
h1 { font-size: clamp(34px, 4.2vw, 48px); font-weight: 700; }
h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 700; }
h3 { font-size: 21px; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.lede { font-size: 20px; line-height: 1.5; color: var(--ink-soft); max-width: 40ch; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 8px; font-weight: 600; font-size: 16px;
  text-decoration: none; border: 1.5px solid var(--ink); color: var(--ink);
}
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--blue-deep); border-color: var(--blue-deep); color: #fff; }
.btn:not(.primary):hover { border-color: var(--blue); color: var(--blue); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Hero */
.hero { padding: 72px 0 80px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 20px; max-width: 17ch; }
.fine { font-size: 14px; color: var(--ink-faint); margin-top: 16px; }

/* The diff exhibit */
.exhibit { background: var(--paper-raised); border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; box-shadow: 0 1px 0 var(--rule), 0 24px 48px -32px rgba(22, 35, 46, 0.45); }
.exhibit-bar { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--rule); font-size: 13px; color: var(--ink-faint); }
.exhibit-bar strong { color: var(--ink); font-weight: 600; }
.diff { margin: 0; padding: 12px 0; font-size: 13px; line-height: 1.7; overflow-x: auto; }
.diff span { display: block; padding: 0 16px 0 36px; position: relative; white-space: pre; }
.diff .del { background: var(--red-wash); color: var(--red); }
.diff .add { background: var(--green-wash); color: var(--green); }
.diff .del::before, .diff .add::before { position: absolute; left: 16px; }
.diff .del::before { content: '−'; }
.diff .add::before { content: '+'; }
.verdict { border-top: 1px solid var(--rule); padding: 14px 16px 16px; }
.verdict h4 { margin: 0 0 10px; font-size: 14px; font-weight: 600; }
.verdict ul { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.verdict li { display: grid; grid-template-columns: 82px 1fr; gap: 10px; padding: 5px 0; border-top: 1px dashed var(--rule); align-items: baseline; }
.verdict li:first-child { border-top: none; }
.tag { font-size: 12px; font-weight: 700; padding: 1px 7px; border-radius: 4px; justify-self: start; }
.tag.breaking { background: var(--red-wash); color: var(--red); }
.tag.check { background: var(--amber-wash); color: var(--amber); }
.tag.added { background: var(--green-wash); color: var(--green); }
.verdict code { border: none; background: none; padding: 0; color: var(--ink-soft); }

/* Sections */
.section { padding: 72px 0; border-top: 1px solid var(--rule); }
.section h2 { margin-bottom: 16px; max-width: 22ch; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.points { list-style: none; padding: 0; margin: 24px 0 0; }
.points li { padding: 16px 0; border-top: 1px solid var(--rule); }
.points li strong { display: block; font-size: 18px; margin-bottom: 2px; }
.points li p { margin: 0; color: var(--ink-soft); }

.sources { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 0; padding: 0; list-style: none; }
.sources li { border: 1px solid var(--rule); background: var(--paper-raised); border-radius: 999px; padding: 6px 14px; font-size: 15px; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 12px 12px 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--ink-soft); font-size: 14px; }
.table-scroll { overflow-x: auto; }

.faq dt { font-weight: 600; font-size: 18px; margin-top: 24px; }
.faq dd { margin: 6px 0 0; color: var(--ink-soft); max-width: var(--measure); }

/* Docs / legal pages */
.page { padding: 56px 0 88px; }
.page h1 { font-size: clamp(32px, 4vw, 44px); margin-bottom: 12px; }
.page .prose h2 { font-size: 24px; margin: 48px 0 12px; }
.page .prose h3 { font-size: 19px; margin: 32px 0 8px; }
.page .prose ul, .page .prose ol { padding-left: 1.3em; }
.page .prose li { margin: 6px 0; }
.page .updated { color: var(--ink-faint); font-size: 15px; margin-bottom: 32px; }
.docs-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; }
.toc { position: sticky; top: 24px; align-self: start; font-size: 15px; }
.toc ol { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 8px 0; }
.toc a { color: var(--ink-soft); text-decoration: none; }
.toc a:hover { color: var(--blue); }
.callout { border-left: 3px solid var(--blue); background: var(--paper-raised); padding: 12px 16px; margin: 20px 0; border-radius: 0 8px 8px 0; }
pre.block { background: var(--paper-raised); border: 1px solid var(--rule); border-radius: 8px; padding: 14px 16px; overflow-x: auto; line-height: 1.6; }

/* Footer */
.site-foot { border-top: 1px solid var(--rule); padding: 32px 0 48px; font-size: 14px; color: var(--ink-faint); }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 18px; }
.site-foot a { color: var(--ink-soft); text-decoration: none; }
.site-foot a:hover { color: var(--blue); }

@media (max-width: 860px) {
  .hero { padding: 40px 0 56px; }
  .hero .wrap, .split, .docs-layout { grid-template-columns: 1fr; gap: 36px; }
  .toc { position: static; }
  .site-nav { gap: 14px; font-size: 14px; }
  .site-nav .hide-sm { display: none; }
  .section { padding: 56px 0; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .verdict li { grid-template-columns: 1fr; gap: 2px; }
}
@media (prefers-reduced-motion: no-preference) {
  .exhibit .verdict li { animation: settle 0.5s both; }
  .exhibit .verdict li:nth-child(2) { animation-delay: 0.12s; }
  .exhibit .verdict li:nth-child(3) { animation-delay: 0.24s; }
  .exhibit .verdict li:nth-child(4) { animation-delay: 0.36s; }
}
@keyframes settle { from { opacity: 0; transform: translateY(4px); } }

.logo svg { flex-shrink: 0; }
.exhibit { margin: 0; }
@media (max-width: 860px) {
  .site-nav a[href='/migrate/'] { display: none; }
  .exhibit-bar { flex-wrap: wrap; gap: 4px 12px; }
}