:root {
  --bone: #071013;
  --bone-2: #0c191d;
  --card: #102127;
  --ink: #f3f8f8;
  --ink-2: #b4c3c8;
  --mute: #768a93;
  --line: #20363d;
  --accent: #69aac1;
  --on-accent: #071013;
  --up: #3ecf8e;
  --down: #f2695c;
  --sans: "Sora", ui-sans-serif, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bone); color: var(--ink); font: 15px/1.5 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
code, .mono { font-family: var(--mono); font-size: .86em; }
button, input, select { font: inherit; color: inherit; }

.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 24px; padding: 12px 28px;
  background: color-mix(in srgb, var(--bone) 95%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.brand svg { width: 22px; height: 22px; }
.top nav { display: flex; gap: 22px; margin-left: auto; font-size: 14px; color: var(--ink-2); }
.top nav a:hover { color: var(--ink); }
.top-r { display: flex; gap: 10px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 6px;
  font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--mute); }
.pill.live i { background: var(--accent); }
.pill.fork i { background: #d39b12; }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 8px; font-weight: 600 !important; border: 1px solid var(--line);
  background: var(--card); font-weight: 500; font-size: 14px; cursor: pointer; transition: transform .12s, background .12s; }
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn.dark { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 700; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

main { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

.hero { text-align: center; padding: 96px 0 40px; }
.hero h1 { font-size: clamp(38px, 6.2vw, 72px); line-height: 1.04; font-weight: 800; letter-spacing: -.055em; margin: 0 auto 22px; max-width: 12ch; }
.lede { max-width: 560px; margin: 0 auto 28px; color: var(--ink-2); font-size: 16px; }
.cta { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.cta span { opacity: .7; }
.paste { display: flex; max-width: 620px; margin: 0 auto; background: var(--bone-2); border: 1px solid var(--line); border-radius: 8px; padding: 5px; }
.paste input { flex: 1; min-width: 0; border: 0; background: transparent; padding: 10px 12px; outline: none; font-family: var(--mono); font-size: 13px; }
.paste .go { width: 40px; border: 0; border-radius: 6px; background: var(--accent); color: var(--on-accent); cursor: pointer; font-size: 16px; }
.mono-note { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--mute); margin-top: 14px; }

.resolved { max-width: 620px; margin: 18px auto 0; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.res-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.res-head img { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; background: var(--bone-2); }
.res-head b { font-size: 17px; }
.res-head small { display: block; color: var(--mute); }
.res-tag { margin-left: auto; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; padding: 4px 8px; border-radius: 5px; background: var(--bone-2); }
.res-tag.on { background: var(--accent); color: var(--on-accent); }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px 18px; margin: 0; }
.kv div { min-width: 0; }
.kv dt { font: 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--mute); }
.kv dd { margin: 2px 0 0; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar { height: 6px; background: var(--bone-2); border-radius: 3px; overflow: hidden; margin-top: 6px; }
.bar i { display: block; height: 100%; background: var(--accent); }
.res-stack { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.res-stack span { font: 12px var(--mono); padding: 3px 8px; border: 1px solid var(--line); border-radius: 5px; }
.res-err { color: var(--down); }

.tape { overflow: hidden; border-block: 1px solid var(--line); margin: 40px -28px 0; mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.tape-track { display: flex; gap: 34px; width: max-content; padding: 12px 0; animation: tape 80s linear infinite; font: 13px var(--mono); white-space: nowrap; }
.tape:hover .tape-track { animation-play-state: paused; }
.tape-track a, .tape-track button { all: unset; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; }
.tape-track img { width: 18px; height: 18px; border-radius: 4px; object-fit: cover; }
.tape-track .q { color: var(--mute); }
.tape-track .u { color: var(--up); } .tape-track .d { color: var(--down); }
.tape-empty { color: var(--mute); padding-left: 28px; }
@keyframes tape { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .tape-track { animation: none; } }

.block { display: grid; grid-template-columns: 60px 1fr; gap: 0 24px; padding: 96px 0 0; }
.num { font: 500 13px var(--mono); color: var(--mute); padding-top: 6px; }
.kicker { font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--mute); margin: 0 0 8px; }
.block h2 { font-size: clamp(28px, 3.8vw, 40px); font-weight: 800; letter-spacing: -.05em; line-height: 1.05; margin: 0 0 14px; }
.block .body { color: var(--ink-2); max-width: 600px; margin: 0; }
.block > :not(.num):not(.block-body) { grid-column: 2; }

.stack-diagram { margin-top: 34px; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 28px; background: var(--card); color: var(--ink); border: 1px solid var(--line); border-radius: 16px; }
.sd-node { padding: 10px 16px; border: 1px solid var(--line); border-radius: 7px; font-weight: 500; }
.sd-node.strong { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 700; }
.sd-node code { opacity: .6; margin-left: 6px; }
.sd-arrow { color: var(--mute); }
.sd-group { position: relative; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 16px; border: 1px dashed var(--line); border-radius: 9px; }
.sd-label { position: absolute; top: -9px; left: 12px; padding: 0 6px; background: var(--card); font: 11px var(--mono); color: var(--mute); text-transform: uppercase; letter-spacing: .1em; }
.sd-hook { padding: 8px 12px; background: var(--bone-2); border: 1px solid var(--line); border-radius: 6px; min-width: 150px; }
.sd-hook b { display: block; font-weight: 500; font-size: 14px; }
.sd-hook b { font-weight: 600 !important; }
.sd-hook span { font: 11px var(--mono); color: var(--mute); }
.sd-hook.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.sd-hook.on span { color: var(--accent); }

.hook-grid, .bounds { margin-top: 24px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.hook-grid article, .bounds article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.hook-grid h3, .bounds h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.hook-grid p, .bounds p { margin: 0; color: var(--ink-2); font-size: 14px; }
.hook-grid .soon { background: transparent; border-style: dashed; }
.live { margin-top: 10px !important; font: 12px var(--mono); }
.live b { font-weight: 500; }

.panel { margin-top: 30px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.panel-head { padding: 14px 20px; border-bottom: 1px solid var(--line); font: 13px var(--mono); color: var(--ink-2); overflow-wrap: anywhere; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.row b { font-weight: 500; min-width: 120px; }
.row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }
.inl { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; color: var(--ink-2); font-size: 14px; }
.inl input, .row select { width: 84px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 5px; background: var(--bone); font-family: var(--mono); font-size: 13px; }
.inl input.wide { width: 300px; max-width: 100%; }
.inl em { font-style: normal; font-family: var(--mono); font-size: 12px; }
.panel-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 14px 20px; }
.status { font: 12px var(--mono); color: var(--ink-2); overflow-wrap: anywhere; }
.status.err { color: var(--down); }
.seg { display: flex; gap: 0; padding: 14px 20px 0; }
.seg button { padding: 7px 18px; border: 1px solid var(--line); background: var(--bone); cursor: pointer; }
.seg button:first-child { border-radius: 6px 0 0 6px; } .seg button:last-child { border-radius: 0 6px 6px 0; border-left: 0; }
.seg button.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
.estimate { margin: 0; padding: 0 20px 14px; font: 12px var(--mono); color: var(--mute); }

.stats { display: grid; grid-template-columns: repeat(5, 1fr); margin: 110px 0 0; border-top: 1px solid var(--line); }
.stats div { padding: 18px 0; border-right: 1px solid var(--line); padding-left: 18px; }
.stats div:last-child { border-right: 0; }
.stats span { display: block; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--mute); }
.stats b { font-weight: 500; font-size: 18px; }
.foot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 22px 28px; border-top: 1px solid var(--line); color: var(--mute); font-size: 13px; }

.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--accent); color: var(--on-accent); font-weight: 600; padding: 10px 16px; border-radius: 7px; font-size: 14px; z-index: 50; max-width: calc(100% - 32px); }

@media (max-width: 760px) {
  .top { padding: 10px 16px; gap: 10px; }
  .top nav { display: none; }
  .top-r { margin-left: auto; }
  .brand, .btn { white-space: nowrap; }
  .pill span { display: none; }
  .top .btn { padding: 8px 12px; }
  main { padding: 0 16px; }
  .hero { padding-top: 60px; }
  .tape { margin-inline: -16px; }
  .block { grid-template-columns: 1fr; padding-top: 70px; }
  .block > :not(.num):not(.block-body) { grid-column: 1; }
  .num { padding: 0 0 8px; }
  .stack-diagram { padding: 18px 12px; }
  .sd-hook { min-width: 0; flex: 1 1 130px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats div { border-bottom: 1px solid var(--line); }
  .stats div:nth-child(2n) { border-right: 0; }
  .row b { min-width: 0; }
}
.brand, .top nav a, .btn, .pill { white-space: nowrap; }
@media (max-width: 920px) { .top nav { display: none; } .top-r { margin-left: auto; } }

/* hook catalog */
.hooks { margin-top: 30px; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.hook { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 22px 22px 20px; background: var(--card); min-height: 196px; transition: background .18s; }
.hook::after { content: "›"; position: absolute; top: 18px; right: 20px; color: var(--mute); font-size: 18px; transition: transform .18s, color .18s; }
.hook:hover { background: color-mix(in srgb, var(--card) 80%, var(--accent) 20%); }
.hook:hover::after { color: var(--accent); transform: translateX(3px); }
.hook:hover h3 { color: var(--accent); }
.hook-n { font: 12px var(--mono); color: var(--mute); }
.hook h3 { margin: 0; font-size: 19px; font-weight: 700; letter-spacing: -.02em; transition: color .18s; }
.hook p { margin: 0; color: var(--ink-2); font-size: 14px; line-height: 1.5; flex: 1; }
.hook-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.hook-tags i { font: normal 500 10px var(--mono); letter-spacing: .12em; padding: 4px 7px; border: 1px solid var(--line); border-radius: 4px; color: var(--accent); }
.hook-tags i.dim { color: var(--mute); border-style: dashed; }
.hook.off { opacity: .55; }