:root {
  color-scheme: light;
  --paper: #fafbfa;
  --wall: #ecf1f2;
  --card: #fff;
  --ink: #1a1b18;
  --soft: #55574f;
  --line: rgba(26, 27, 24, 0.18);
  --blue: #2b50e2;
  --blue-wash: #e8edff;
  --green: #2e7d3b;
  --green-wash: #e3f4e6;
  --yellow: #ffd84d;
  --orange: #e8501f;
  font-family: Inter, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); line-height: 1.65; }
button, a { font: inherit; }
a { color: var(--blue); }
.shell { width: min(1080px, calc(100% - 32px)); margin: 0 auto; padding: 36px 0 64px; }
.top { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.eyebrow { margin: 0 0 6px; color: var(--blue); font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(1.8rem, 5vw, 3.2rem); line-height: 1.14; letter-spacing: -.035em; }
.lead { max-width: 62ch; margin: 12px 0 0; color: var(--soft); }
.back { white-space: nowrap; font-weight: 750; text-decoration: none; }
.notice { margin: 18px 0 24px; padding: 12px 14px; border: 1px solid #cab33a; border-radius: 10px; background: #fff7ca; font-size: .88rem; }
.window { overflow: hidden; border: 2px solid var(--ink); border-radius: 16px; background: var(--card); box-shadow: 7px 7px 0 var(--ink); }
.bar { display: flex; align-items: center; gap: 7px; min-height: 44px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--wall); }
.dot { width: 10px; height: 10px; border: 1px solid var(--ink); border-radius: 50%; background: var(--card); }
.bar strong { margin-left: 6px; font-size: .82rem; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pane { padding: clamp(18px, 4vw, 30px); }
.pane + .pane { border-left: 1px solid var(--line); }
.pane h2 { margin: 0 0 14px; font-size: 1.06rem; }
.mock { border: 1.5px solid var(--line); border-radius: 12px; background: var(--card); padding: 16px; }
.dark { color: #f4f4ed; background: #1f211d; }
.muted { color: var(--soft); }
.stack { display: grid; gap: 12px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: 999px; background: var(--green-wash); color: var(--green); font-size: .78rem; font-weight: 800; }
.badge::before { content: "✓"; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start; }
.step-no { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--blue); color: #fff; font-weight: 850; }
.step b, .step span { display: block; }
.step span { color: var(--soft); font-size: .88rem; }
.code { overflow-x: auto; margin: 0; padding: 16px; border-radius: 10px; color: #e9ecff; background: #20221e; font: .84rem/1.65 ui-monospace, Consolas, monospace; white-space: pre-wrap; }
.prompt { border-left: 5px solid var(--blue); }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 44px; padding: 9px 15px; border: 2px solid var(--ink); border-radius: 9px; background: var(--blue); color: #fff; font-weight: 800; text-decoration: none; box-shadow: 3px 3px 0 var(--ink); cursor: pointer; }
.button.alt { color: var(--ink); background: var(--yellow); }
.button:focus-visible, a:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.result { border: 2px solid var(--ink); border-radius: 12px; background: linear-gradient(145deg, #eef2ff, #fff); padding: clamp(22px, 5vw, 40px); }
.result h2 { margin: 0; font-size: clamp(1.6rem, 4vw, 2.6rem); }
.result p { max-width: 48ch; color: var(--soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip { padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; background: #fff; font-size: .82rem; font-weight: 700; }
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.timeline li { position: relative; padding: 14px 16px 14px 48px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.timeline li::before { content: attr(data-no); position: absolute; left: 13px; top: 13px; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--blue); color: #fff; font-size: .72rem; font-weight: 900; }
.timeline li.is-restored { border-color: var(--green); background: var(--green-wash); }
.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.compare-card { padding: 18px; border: 1.5px solid var(--line); border-radius: 12px; background: #fff; transition: opacity .2s, transform .2s; }
.compare-card.is-off { opacity: .35; transform: scale(.98); }
.compare-card h2 { margin: 0 0 12px; font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; }
.site-card { min-height: 180px; padding: 22px; border-radius: 10px; background: #f0eee8; }
.site-card.after { color: #fff; background: linear-gradient(145deg, #2236a5, #2b50e2); }
.site-card p { max-width: 34ch; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.deploy-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.deploy-node { padding: 18px; border: 1.5px solid var(--line); border-radius: 12px; background: #fff; text-align: center; }
.deploy-node b { display: block; margin-bottom: 5px; }
.deploy-node.is-on { border-color: var(--green); background: var(--green-wash); }
.url { overflow-wrap: anywhere; color: var(--blue); font-family: ui-monospace, Consolas, monospace; font-weight: 750; }
@media (max-width: 720px) {
  .top { display: block; }
  .back { display: inline-block; margin-top: 14px; }
  .grid, .compare { grid-template-columns: 1fr; }
  .pane + .pane { border-left: 0; border-top: 1px solid var(--line); }
  .deploy-flow { grid-template-columns: 1fr; }
}