/* Invoice check demo · studio variant A (dark). Tokens match /studio/style.css. No web fonts: system stack only. */
:root {
  --bg: #07080a;
  --bg-2: #0d0f12;
  --bg-3: #13161a;
  --ink: #eceee9;
  --ink-2: #a3a9b0;
  --ink-3: #7d848c;
  --line: rgba(236, 238, 233, 0.1);
  --line-2: rgba(236, 238, 233, 0.18);
  --acc: #c8f542;
  --acc-ink: #0a0c05;
  --acc-dim: rgba(200, 245, 66, 0.14);
  --warn: #f5b841;
  --warn-dim: rgba(245, 184, 65, 0.13);
  --bad: #ff7a6b;
  --bad-dim: rgba(255, 122, 107, 0.14);
  --sans: "Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --pad: clamp(16px, 4vw, 48px);
  --max: 1240px;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.5; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
.mono { font-family: var(--mono); }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 50; background: var(--acc); color: var(--acc-ink); padding: 8px 12px; border-radius: 6px; font-weight: 600; }
.skip:focus { top: 12px; }

/* header (same as the studio home) */
.top {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px var(--pad);
  background: linear-gradient(to bottom, rgba(7, 8, 10, 0.95), rgba(7, 8, 10, 0.7));
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: 14px; letter-spacing: 0.01em; white-space: nowrap; }
.brand img { width: 30px; height: 30px; }
.brand-text { display: inline-flex; gap: 0.45em; }
.b-a { color: var(--ink); font-weight: 600; }
.b-slash { color: var(--acc); }
.b-b { color: var(--ink-2); }
.nav { display: flex; align-items: center; gap: clamp(10px, 2vw, 22px); }
.nav-link { font-size: 13px; color: var(--ink-2); text-decoration: none; }
.nav-link:hover { color: var(--ink); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 14px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--acc); color: var(--acc-ink); font: 600 14px var(--sans); text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 24px -8px rgba(200, 245, 66, 0.55); }
.btn:disabled { opacity: 0.5; cursor: progress; transform: none; box-shadow: none; }
.btn-lg { padding: 14px 22px; font-size: 16px; }

/* intro */
.intro { max-width: var(--max); margin: 0 auto; padding: clamp(40px, 8vh, 88px) var(--pad) 28px; position: relative; }
.intro::before {
  content: ""; position: absolute; inset: 0 calc(50% - 50vw); z-index: -1; pointer-events: none;
  background-image: linear-gradient(to right, rgba(236, 238, 233, 0.045) 1px, transparent 1px), linear-gradient(to bottom, rgba(236, 238, 233, 0.045) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 30% 40%, #000 20%, transparent 80%); mask-image: radial-gradient(ellipse 70% 80% at 30% 40%, #000 20%, transparent 80%);
}
.eyebrow { margin: 0 0 18px; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); display: flex; align-items: center; gap: 10px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 0 4px var(--acc-dim); }
h1 { margin: 0; font-weight: 600; letter-spacing: -0.035em; line-height: 0.98; font-size: clamp(44px, 7vw, 92px); }
.lede { margin: 20px 0 0; font-size: clamp(17px, 1.6vw, 20px); color: var(--ink-2); max-width: 52ch; }
.lede strong { color: var(--ink); }
.honest { margin: 26px 0 0; max-width: 72ch; padding: 14px 16px; border: 1px solid rgba(200, 245, 66, 0.3); border-left: 3px solid var(--acc); background: var(--acc-dim); border-radius: 4px; font-size: 15px; }
.honest-k { display: block; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--acc); margin-bottom: 4px; }

/* demo */
.demo { max-width: var(--max); margin: 0 auto; padding: 8px var(--pad) clamp(48px, 8vh, 88px); }
.picker { border: 0; padding: 0; margin: 0 0 22px; min-width: 0; }
.picker legend, .stage-k { padding: 0; margin: 0 0 12px; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); }
.picks { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.pick { position: relative; display: block; cursor: pointer; }
.pick input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.pick-body { display: flex; flex-direction: column; gap: 2px; height: 100%; padding: 12px 14px; border: 1px solid var(--line-2); border-radius: 6px; background: var(--bg-2); transition: border-color 160ms ease, background 160ms ease; }
.pick:hover .pick-body { border-color: rgba(236, 238, 233, 0.35); }
.pick input:checked + .pick-body { border-color: var(--acc); background: linear-gradient(var(--acc-dim), var(--acc-dim)), var(--bg-2); }
.pick input:focus-visible + .pick-body { outline: 2px solid var(--acc); outline-offset: 3px; }
.pick-k { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.pick input:checked + .pick-body .pick-k { color: var(--acc); }
.pick-t { font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.pick-s { font-size: 13px; color: var(--ink-2); line-height: 1.35; }

.stage { display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr); gap: clamp(16px, 2.6vw, 36px); align-items: start; }
.paper-wrap { position: sticky; top: 84px; }

/* the paper */
.paper {
  background: #f6f3ea; color: #1d1f22; border-radius: 3px; padding: clamp(18px, 2.4vw, 30px);
  font: 13px/1.45 var(--mono); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.06);
  background-image: linear-gradient(rgba(0, 0, 0, 0.018) 1px, transparent 1px); background-size: 100% 22px;
  overflow-wrap: anywhere;
}
.paper.is-photo {
  transform: rotate(-1.2deg); filter: contrast(0.96) saturate(0.9); border: 8px solid #e8e6df; border-radius: 6px;
  background-color: #efeadd; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.9), inset 0 0 60px rgba(90, 70, 30, 0.18);
}
.wa { display: inline-block; margin: 0 0 12px; padding: 3px 8px; border-radius: 999px; background: #1f8f5a; color: #fff; font-size: 11px; }
.inv-head { border-bottom: 2px solid #1d1f22; padding-bottom: 8px; margin-bottom: 10px; }
.inv-co { margin: 0; font: 700 15px/1.25 var(--sans); letter-spacing: 0.02em; }
.inv-addr { margin: 2px 0 0; font-size: 12px; color: #55595e; }
.inv-title { margin: 0 0 10px; font: 700 13px var(--mono); letter-spacing: 0.2em; }
.inv-meta { margin: 0 0 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 16px; }
.inv-meta div { display: flex; gap: 6px; flex-wrap: wrap; }
.inv-meta dt { color: #55595e; }
.inv-meta dt::after { content: ":"; }
.inv-meta dd { margin: 0; font-weight: 600; }
.smudge { display: inline-block; width: 1.9em; height: 1.05em; vertical-align: -0.15em; margin-left: 1px; border-radius: 40%; background: radial-gradient(ellipse at 40% 50%, rgba(30, 30, 40, 0.75), rgba(30, 30, 40, 0.35) 55%, transparent 72%); filter: blur(1.5px); }
.inv-lines { width: 100%; border-collapse: collapse; margin-bottom: 10px; }
.inv-lines th { text-align: left; font-weight: 600; font-size: 11px; color: #55595e; border-bottom: 1px solid #b9b6ad; padding: 4px 4px 4px 0; }
.inv-lines td { padding: 5px 4px 5px 0; border-bottom: 1px dashed #d4d0c5; vertical-align: top; }
.inv-lines .n { text-align: right; white-space: nowrap; }
.inv-sums { margin: 0 0 0 auto; width: min(100%, 280px); }
.inv-sums div { display: flex; justify-content: space-between; gap: 12px; padding: 2px 0; }
.inv-sums div:last-child { border-top: 2px solid #1d1f22; margin-top: 4px; padding-top: 5px; font-weight: 700; }
.inv-sums dd { margin: 0; }
.inv-foot { margin: 14px 0 0; font-size: 12px; color: #55595e; }
.agr-title { text-align: center; font-size: 14px; }
.agr-intro p { margin: 0 0 2px; }
.agr-intro { margin-bottom: 12px; }
.agr-clauses { list-style: none; padding: 0; margin: 0; font-size: 12px; line-height: 1.5; }
.agr-clauses li { margin-bottom: 6px; }
.agr-sign { margin-top: 14px; font-size: 12px; color: #55595e; }
.agr-sign p { margin: 0 0 2px; }
.paper-text { margin-top: 12px; }
.paper-text summary { cursor: pointer; font-size: 12px; color: var(--ink-2); }
.paper-text pre, .raw pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 12px/1.5 var(--mono); color: var(--ink-2); background: var(--bg-2); border: 1px solid var(--line); border-radius: 4px; padding: 12px; margin: 8px 0 0; }

/* panel */
.panel { border: 1px solid var(--line-2); border-radius: 6px; background: var(--bg-2); padding: clamp(14px, 2vw, 22px); min-width: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.panel-head .stage-k { margin: 0; }
.out { min-height: 240px; }
.out-empty { margin: 0; padding: 40px 16px; text-align: center; color: var(--ink-3); border: 1px dashed var(--line-2); border-radius: 4px; }
.out-empty strong { color: var(--ink-2); }
.think { display: flex; align-items: center; gap: 10px; margin: 0 0 10px; font-size: 13px; color: var(--ink-2); }
.spin { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line-2); border-top-color: var(--acc); animation: spin 700ms linear infinite; flex: 0 0 12px; }
.think.done { color: var(--ink-3); }
.think.done .spin { animation: none; border-color: var(--acc); background: var(--acc); transform: scale(0.6); }
@keyframes spin { to { transform: rotate(360deg); } }
.blk { border-top: 1px solid var(--line); padding: 14px 0 16px; }
.blk:first-child { border-top: 0; padding-top: 0; }
.blk.enter { opacity: 0; transform: translateY(8px); transition: opacity 360ms ease, transform 360ms cubic-bezier(.2, .7, .2, 1); }
.blk.enter.in { opacity: 1; transform: none; }
.blk-h { margin: 0 0 10px; font-size: 18px; font-weight: 600; letter-spacing: -0.015em; display: flex; align-items: center; gap: 8px; }
.blk.warn .blk-h::before, .blk.ok .blk-h::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--warn); box-shadow: 0 0 0 4px var(--warn-dim); }
.blk.ok .blk-h::before { background: var(--acc); box-shadow: 0 0 0 4px var(--acc-dim); }
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 0; }
.f { padding: 9px 11px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg-3); min-width: 0; }
.f dt { font: 11px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.f dd { margin: 2px 0 0; font: 500 15px var(--mono); overflow-wrap: anywhere; }
.f.hot { border-color: rgba(255, 122, 107, 0.5); background: var(--bad-dim); }
.tag { display: inline-block; padding: 1px 7px; border-radius: 999px; font: 600 12px var(--mono); letter-spacing: 0.04em; }
.tag.none { background: rgba(236, 238, 233, 0.08); color: var(--ink-2); border: 1px solid var(--line-2); }
.tag.unclear { background: var(--warn-dim); color: var(--warn); border: 1px solid rgba(245, 184, 65, 0.4); }
.tag.ok { background: var(--acc-dim); color: var(--acc); border: 1px solid rgba(200, 245, 66, 0.35); }
.tag.bad { background: var(--bad-dim); color: var(--bad); border: 1px solid rgba(255, 122, 107, 0.45); }
.legend { margin: 10px 0 0; font-size: 13px; color: var(--ink-3); line-height: 1.9; }
.raw { margin-top: 10px; }
.raw summary { cursor: pointer; font-size: 12px; color: var(--ink-2); }
.sub { margin: 10px 0 6px; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.sub:first-of-type { margin-top: 0; }
.items { margin: 0; padding-left: 18px; }
.items li { margin: 0 0 8px; }
.items.warn li::marker { color: var(--warn); }
.items.dates li::marker, .qs li::marker { color: var(--acc); }
.items strong, .terms strong { color: var(--acc); font-weight: 600; }
.calm { margin: 0; color: var(--ink-2); font-size: 15px; }
.quote { margin: 0; font: 13px/1.6 var(--mono); color: var(--ink-2); padding-left: 12px; border-left: 2px solid var(--line-2); overflow-wrap: anywhere; }
.draft { margin: 0; padding: 12px 14px; border-radius: 12px 12px 12px 3px; background: #12301f; border: 1px solid rgba(64, 200, 120, 0.3); font-size: 15px; }
.src { margin: 4px 0 14px; font-size: 11px; line-height: 1.5; color: var(--ink-3); }
.blk .src { margin: 10px 0 0; }
.terms { margin: 0; display: grid; gap: 8px; }
.terms div { padding: 10px 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg-3); }
.terms div.hot { border-color: rgba(245, 184, 65, 0.5); background: var(--warn-dim); }
.terms dt { font-weight: 600; font-size: 15px; }
.terms dd { margin: 4px 0 0; color: var(--ink-2); font-size: 14px; }
.terms dd p { margin: 0; }
.steps { margin: 0; padding-left: 18px; }
.steps li { margin-bottom: 4px; }
.close { margin: 12px 0 0; font-size: 14px; color: var(--ink-3); font-style: italic; }

/* next */
.next { max-width: var(--max); margin: 0 auto; padding: clamp(48px, 8vh, 88px) var(--pad); border-top: 1px solid var(--line); }
.next h2 { margin: 0; font-weight: 600; letter-spacing: -0.03em; line-height: 1.02; font-size: clamp(30px, 3.8vw, 52px); max-width: 22ch; }
.next > p { color: var(--ink-2); max-width: 60ch; margin: 16px 0 0; }
.next-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; margin-top: 26px; }
.link { color: var(--ink); text-decoration: underline; text-decoration-color: var(--acc); text-underline-offset: 4px; }
.link:hover { color: var(--acc); }
.next .fine { font-size: 13px; color: var(--ink-3); }
.foot { max-width: var(--max); margin: 0 auto; padding: 28px var(--pad) 40px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 14px; }
.foot a { color: var(--ink-2); text-decoration: none; }
.foot a:hover { color: var(--acc); }
.foot p { margin: 0; font-size: 12px; color: var(--ink-3); }

@media (max-width: 1024px) {
  .picks { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stage { grid-template-columns: 1fr; }
  .paper-wrap { position: static; }
}
@media (max-width: 560px) {
  .picks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pick:last-child { grid-column: 1 / -1; }
  .fields { grid-template-columns: 1fr 1fr; }
  .inv-meta { grid-template-columns: 1fr; }
  .paper { font-size: 12px; }
  .panel-head .btn { width: 100%; }
  .brand { gap: 9px; font-size: 13px; }
  .brand img { width: 26px; height: 26px; }
  .nav-link { display: none; }
  .btn { padding: 8px 12px; font-size: 13px; }
  .btn-lg { padding: 13px 20px; font-size: 15px; }
  .next-row .btn { white-space: normal; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .paper.is-photo { transform: none; }
}