:root {
  --paper: #f3efe4;
  --paper-2: #ebe5d6;
  --rule: #c9c0aa;
  --ink: #1d1b17;
  --ink-2: #57524a;
  --pen: #d42a1e;
  --pen-soft: rgba(212, 42, 30, .1);
  --anth: #b8562f;
  --oai: #1f6f5c;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --hand: "Caveat", "Comic Sans MS", cursive;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 15px/1.5 var(--mono);
  background-image: repeating-linear-gradient(to bottom, transparent 0 31px, rgba(80, 110, 160, .09) 31px 32px);
}
a { color: inherit; text-decoration-color: var(--pen); text-underline-offset: 3px; }
a:hover { color: var(--pen); }
button, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--pen); outline-offset: 2px; }

/* masthead */
.mast { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 14px clamp(16px, 4vw, 48px); border-bottom: 1.5px solid var(--ink); background: var(--paper); position: relative; z-index: 2; }
.brand { font: 600 13px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; text-decoration: none; }
.brand span { color: var(--pen); text-decoration: line-through; text-decoration-thickness: 2px; }
.mast-meta { font-size: 12px; color: var(--ink-2); }

/* hero */
.hero { padding: clamp(28px, 6vw, 72px) clamp(16px, 4vw, 48px) 18px; max-width: 1180px; }
.kicker { margin: 0 0 10px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); }
.prompt { font: 400 clamp(34px, 6.4vw, 84px)/1.02 var(--serif); margin: 0; letter-spacing: -.01em; }
.prompt .task { font-style: italic; }
.pen { position: relative; white-space: nowrap; color: var(--pen); }
.pen::after { content: ""; position: absolute; left: -2%; right: -2%; bottom: -.06em; height: .16em; background: var(--pen); border-radius: 40% 60% 50% 50% / 60% 40% 60% 40%; transform: rotate(-1.2deg); opacity: .85; }
.lede { max-width: 62ch; margin: 22px 0 0; color: var(--ink-2); }

/* task tabs */
.tasks { display: flex; gap: 0; overflow-x: auto; padding: 0 clamp(16px, 4vw, 48px); border-bottom: 1.5px solid var(--ink); scrollbar-width: none; position: sticky; top: 0; background: var(--paper); z-index: 3; }
.tasks::-webkit-scrollbar { display: none; }
.tasks button { flex: 0 0 auto; border: 0; background: none; padding: 12px 16px 10px; cursor: pointer; text-align: left; border-bottom: 3px solid transparent; margin-bottom: -1.5px; }
.tasks button small { display: block; font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); }
.tasks button span { font: 400 19px/1.2 var(--serif); }
.tasks button[aria-selected="true"] { border-bottom-color: var(--pen); }
.tasks button[aria-selected="true"] span { color: var(--pen); }

/* board */
.board { padding: 26px clamp(16px, 4vw, 48px) 10px; display: grid; gap: 30px; }
.model { display: grid; grid-template-columns: 170px 1fr; gap: 18px; align-items: start; }
.model-head { position: sticky; top: 74px; padding-top: 4px; }
.model-head h3 { margin: 0; font: 400 28px/1 var(--serif); }
.model-head .vendor { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.vendor.Anthropic { color: var(--anth); }
.vendor.OpenAI { color: var(--oai); }
.model-head .price { font-size: 11.5px; color: var(--ink-2); margin-top: 6px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }

.card { background: #fffdf7; border: 1.5px solid var(--ink); box-shadow: 4px 4px 0 var(--ink); position: relative; display: flex; flex-direction: column; transition: transform .12s, box-shadow .12s; }
.card:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.card.sel-a, .card.sel-b { box-shadow: 4px 4px 0 var(--pen); border-color: var(--pen); }
.thumb { display: block; aspect-ratio: 16 / 10; background: var(--paper-2); border-bottom: 1.5px solid var(--ink); overflow: hidden; position: relative; }
.thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.thumb .none { position: absolute; inset: 0; display: grid; place-items: center; font: 400 22px var(--serif); color: var(--ink-2); font-style: italic; }
.card-body { padding: 10px 12px 12px; display: grid; gap: 8px; }
.effort { display: flex; align-items: center; gap: 8px; }
.effort-label { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); }
.meter { display: inline-flex; gap: 3px; }
.meter i { width: 9px; height: 9px; border: 1.5px solid var(--ink); display: block; }
.meter i.on { background: var(--ink); }
.effort b { font-weight: 600; }
.figs { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 13px; }
.figs span { white-space: nowrap; }
.figs .k { color: var(--ink-2); font-size: 11px; margin-right: 3px; }
.card-actions { display: flex; gap: 8px; margin-top: 2px; }
.card-actions a, .card-actions button { flex: 1; text-align: center; padding: 7px 8px; border: 1.5px solid var(--ink); background: none; cursor: pointer; text-decoration: none; font-size: 12.5px; }
.card-actions a:hover, .card-actions button:hover { background: var(--ink); color: var(--paper); }
.card-actions button[aria-pressed="true"] { background: var(--pen); border-color: var(--pen); color: #fff; }
.stamp { position: absolute; top: 12px; right: -8px; transform: rotate(6deg); font: 600 22px/1 var(--hand); color: var(--pen); border: 2px solid var(--pen); padding: 3px 8px 1px; background: rgba(255, 253, 247, .92); letter-spacing: .02em; z-index: 1; }
.card.pending { opacity: .55; box-shadow: none; border-style: dashed; }

/* numbers */
.numbers, .how { padding: 34px clamp(16px, 4vw, 48px); }
.numbers h2, .how h2 { font: 400 40px/1 var(--serif); margin: 0 0 16px; }
.numbers h2 small { font: italic 400 22px var(--serif); color: var(--ink-2); }
.table-wrap { overflow-x: auto; border: 1.5px solid var(--ink); background: #fffdf7; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { padding: 8px 12px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--rule); }
th:first-child, td:first-child, th:nth-child(2), td:nth-child(2) { text-align: left; }
th { font-weight: 500; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; cursor: pointer; user-select: none; background: var(--paper-2); position: sticky; top: 0; }
th[aria-sort] { color: var(--pen); }
th button { all: unset; cursor: pointer; }
tbody tr:hover { background: var(--pen-soft); }
td.bad { color: var(--pen); font-weight: 600; }
.bar { display: inline-block; height: 6px; background: var(--ink); vertical-align: middle; margin-left: 8px; opacity: .25; }
.fine { font-size: 12px; color: var(--ink-2); margin: 10px 0 0; }

/* how */
.how { border-top: 1.5px solid var(--ink); }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.how h3 { font: 400 22px/1.1 var(--serif); margin: 0 0 8px; }
.how p, .how li { font-size: 13.5px; }
.req { background: var(--ink); color: #efe9da; padding: 14px; font-size: 12px; overflow-x: auto; margin: 0; }
.notes { padding-left: 18px; margin: 0; display: grid; gap: 8px; }
.foot { padding: 24px clamp(16px, 4vw, 48px) 110px; font-size: 12px; color: var(--ink-2); border-top: 1.5px solid var(--ink); }

/* compare tray */
.tray { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); width: min(760px, calc(100% - 24px)); background: var(--ink); color: var(--paper); display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 16px; z-index: 10; box-shadow: 6px 6px 0 var(--pen); }
.tray-slots { display: flex; align-items: center; gap: 10px; min-width: 0; font-size: 13px; }
.slot { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slot b { color: var(--pen); margin-right: 4px; }
.slot i { opacity: .55; }
.vs { font: italic 18px var(--serif); opacity: .7; }
.tray-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.btn { background: var(--pen); color: #fff; text-decoration: none; padding: 8px 16px; font-weight: 600; font-size: 13px; }
.btn[aria-disabled="true"] { opacity: .4; pointer-events: none; }
.tray .ghost { color: var(--paper); border-color: rgba(243, 239, 228, .4); }
.ghost { border: 1.5px solid var(--ink); background: none; padding: 6px 12px; cursor: pointer; font-size: 12.5px; text-decoration: none; display: inline-block; }
.ghost:hover { background: var(--ink); color: var(--paper); }

/* compare page */
body[data-page="compare"] { background-image: none; }
.cbar { display: flex; align-items: center; gap: 18px; padding: 12px clamp(12px, 3vw, 32px); border-bottom: 1.5px solid var(--ink); flex-wrap: wrap; }
.field { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); display: flex; align-items: center; gap: 8px; }
.field select, .pane-head select { border: 1.5px solid var(--ink); background: #fffdf7; padding: 6px 8px; text-transform: none; letter-spacing: 0; color: var(--ink); font-size: 13px; }
.cprompt { flex: 1; margin: 0; font: italic 400 22px/1.2 var(--serif); min-width: 240px; }
.cprompt .pen { font-style: normal; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.pane { min-width: 0; border-right: 1.5px solid var(--ink); display: flex; flex-direction: column; }
.pane:last-child { border-right: 0; }
.pane-head { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1.5px solid var(--ink); flex-wrap: wrap; background: var(--paper); }
.side-letter { font: 400 30px/1 var(--serif); color: var(--pen); width: 22px; }
.pane-head select { flex: 1; min-width: 180px; }
.frame-wrap { position: relative; height: min(72vh, 820px); background: #fff; border-bottom: 1.5px solid var(--ink); }
.frame-wrap iframe { width: 100%; height: 100%; border: 0; display: block; background: #fff; }
.frame-empty { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; font: italic 26px var(--serif); color: var(--ink-2); background: var(--paper-2); }
.report { padding: 14px 16px 26px; display: grid; gap: 12px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0; margin: 0; border: 1.5px solid var(--ink); background: #fffdf7; }
.stats div { padding: 8px 10px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.stats dt { font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.stats dd { margin: 2px 0 0; font-size: 15px; font-weight: 500; }
.stats dd.bad { color: var(--pen); }
.stats dd.win { text-decoration: underline wavy var(--pen) 1px; text-underline-offset: 4px; }
details { border: 1.5px solid var(--ink); background: #fffdf7; }
summary { cursor: pointer; padding: 8px 12px; font-size: 13px; }
.said-body, .reasoning-body { padding: 0 12px 12px; font-size: 13px; white-space: pre-wrap; margin: 0; max-height: 360px; overflow: auto; font-family: var(--mono); }
.rawlink { margin: 0; font-size: 13px; }
.side-tabs { display: none; }

@media (max-width: 860px) {
  .model { grid-template-columns: 1fr; gap: 10px; }
  .model-head { position: static; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
  .model-head .price { margin: 0; }
  .how-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .pane { border-right: 0; }
  .split[data-show="a"] .pane[data-side="b"], .split[data-show="b"] .pane[data-side="a"] { display: none; }
  .side-tabs { display: flex; border-bottom: 1.5px solid var(--ink); }
  .side-tabs button { flex: 1; border: 0; background: none; padding: 10px; font: 400 22px var(--serif); cursor: pointer; }
  .side-tabs button[aria-selected="true"] { background: var(--ink); color: var(--paper); }
  .frame-wrap { height: 68vh; }
  .cprompt { font-size: 19px; }
}
@media (max-width: 520px) {
  .cards { grid-template-columns: 1fr; }
  .tray { flex-direction: column; align-items: stretch; }
  .tray-actions { justify-content: flex-end; }
  .stamp { right: 6px; }
}
@media (prefers-reduced-motion: reduce) { .card { transition: none; } }