/* BuiltBrief — ink, newsprint and one signal colour. Archivo (width axis) + Martian Mono. */
@font-face { font-family: "Archivo"; src: url("/fonts/archivo.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-style: normal; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("/fonts/archivo-italic.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-style: italic; font-display: swap; }
@font-face { font-family: "Martian Mono"; src: url("/fonts/martian-mono.woff2") format("woff2"); font-weight: 100 800; font-stretch: 75% 112.5%; font-display: swap; }

:root {
  --ink: #0c0c0c;
  --ink-2: #2b2b29;
  --paper: #f2f2ee;
  --page: #ffffff;
  --line: #d6d6cf;
  --line-dark: #262624;
  --grey: #6a6a64;
  --grey-dark: #8e8e87;
  --signal: #ff4f00;
  --signal-text: #c23b00;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "Martian Mono", ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1240px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.55 var(--sans); font-stretch: 100%; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration-color: var(--signal); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { color: var(--signal-text); }
::selection { background: var(--signal); color: var(--ink); }
h1, h2, h3 { margin: 0; font-family: var(--sans); font-weight: 800; font-stretch: 68%; line-height: 0.92; letter-spacing: -0.01em; }
h1 { font-size: clamp(3.6rem, 11vw, 10.5rem); }
h2 { font-size: clamp(2.6rem, 6.4vw, 5.6rem); }
h3 { font-size: 1.9rem; line-height: 1; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
.read { max-width: 720px; }
.mono, .label { font-family: var(--mono); font-stretch: 87.5%; }
.label { font-size: 0.72rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; }
.muted { color: var(--grey); }
.small { font-size: 0.875rem; }
.signal { color: var(--signal); }
.hl { background: linear-gradient(transparent 58%, var(--signal) 58%, var(--signal) 92%, transparent 92%); padding: 0 0.06em; }

/* ── Header ───────────────────────────────────────── */
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header.dark { background: color-mix(in srgb, var(--ink) 86%, transparent); border-bottom-color: var(--line-dark); color: #fff; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 20px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 800 1.35rem/1 var(--sans); font-stretch: 72%; color: inherit; }
.logo:hover { color: inherit; }
.logo-mark { width: 22px; height: 22px; flex: none; }
.nav { display: flex; align-items: center; gap: 26px; font: 500 0.72rem/1 var(--mono); font-stretch: 87.5%; text-transform: uppercase; letter-spacing: 0.04em; }
.nav a { text-decoration: none; color: inherit; opacity: 0.8; }
.nav a:hover { opacity: 1; color: inherit; }
.nav a.btn { opacity: 1; color: #fff; }
.nav a.btn.signal, .nav a.btn:hover { color: var(--ink); }
.nav form { margin: 0; }

/* ── Buttons & forms ──────────────────────────────── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 52px; padding: 0 24px; border: 1.5px solid var(--ink); border-radius: 0; background: var(--ink); color: #fff; font: 600 0.78rem/1 var(--mono); font-stretch: 87.5%; letter-spacing: 0.03em; text-transform: uppercase; text-decoration: none; cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s; }
.btn:hover { background: var(--signal); border-color: var(--signal); color: var(--ink); }
.btn .arrow { transition: transform 0.15s; }
.btn:hover .arrow { transform: translateX(4px); }
.btn.signal { background: var(--signal); border-color: var(--signal); color: var(--ink); }
.btn.signal:hover { background: #fff; border-color: #fff; color: var(--ink); }
.btn.ghost { background: transparent; color: inherit; border-color: currentColor; }
.btn.ghost:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.dark .btn.ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn.small { height: 36px; padding: 0 14px; font-size: 0.68rem; }
.btn.quiet { background: transparent; color: inherit; border-color: var(--line); }
.btn.quiet:hover { border-color: var(--ink); background: transparent; color: inherit; }
.btn[disabled] { opacity: 0.5; cursor: default; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
label { display: block; font: 500 0.7rem/1.4 var(--mono); font-stretch: 87.5%; text-transform: uppercase; letter-spacing: 0.04em; margin: 26px 0 8px; }
input[type="text"], input[type="email"], select, textarea { width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 0; background: var(--page); font: inherit; color: var(--ink); }
textarea { min-height: 96px; resize: vertical; font: 400 0.85rem/1.7 var(--mono); }
input:focus, select:focus, textarea:focus, .btn:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
.check { display: flex; align-items: center; gap: 12px; font: 400 1rem/1.4 var(--sans); text-transform: none; letter-spacing: 0; margin: 10px 0; }
.check input { width: 18px; height: 18px; accent-color: var(--ink); }
.hint { font-size: 0.88rem; color: var(--grey); margin-top: 6px; }

/* ── Sections ─────────────────────────────────────── */
.section { padding: 120px 0; border-top: 1px solid var(--line); }
.section.dark { background: var(--ink); color: #fff; border-top: 0; }
.section.white { background: var(--page); }
.kicker { display: flex; align-items: baseline; gap: 14px; margin-bottom: 28px; }
.kicker .num { color: var(--signal-text); }
.dark .kicker .num { color: var(--signal); }
.section-intro { display: grid; grid-template-columns: 6fr 5fr; gap: 48px; align-items: end; margin-bottom: 72px; }
.section-intro p { font-size: 1.2rem; color: var(--ink-2); max-width: 30em; margin: 0; }
.dark .section-intro p { color: #c9c9c3; }

/* ── Hero ─────────────────────────────────────────── */
.hero { position: relative; background: var(--ink); color: #fff; overflow: hidden; min-height: calc(100svh - 60px); display: flex; flex-direction: column; justify-content: flex-end; }
.noise { position: absolute; inset: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; padding: 0 32px; pointer-events: none; mask-image: linear-gradient(180deg, rgba(0,0,0,.5) 0, #000 10%, #000 28%, rgba(0,0,0,.22) 50%, transparent 74%); -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.5) 0, #000 10%, #000 28%, rgba(0,0,0,.22) 50%, transparent 74%); }
.noise-col { overflow: hidden; }
.noise-track { font: 400 0.68rem/2.1 var(--mono); font-stretch: 80%; color: #4a4a46; white-space: nowrap; animation: feed 70s linear infinite; }
.noise-col:nth-child(2) .noise-track { animation-duration: 90s; }
.noise-col:nth-child(3) .noise-track { animation-duration: 62s; }
.noise-col:nth-child(4) .noise-track { animation-duration: 105s; }
.noise-track span { display: block; overflow: hidden; text-overflow: ellipsis; }
.noise-track span.bot { color: #333331; }
.noise-track span.hit { color: #b33a06; }
@keyframes feed { from { transform: translateY(0); } to { transform: translateY(-50%); } }
.hero-inner { position: relative; padding-top: 140px; padding-bottom: 56px; }
.hero-count { display: inline-flex; flex-wrap: wrap; gap: 8px 28px; color: var(--grey-dark); margin-bottom: 26px; background: var(--ink); padding: 6px 10px 6px 0; }
.hero-count b { color: #fff; font-weight: 500; }
.hero h1 { font-size: clamp(5.2rem, min(21vw, 24vh), 15rem); line-height: 0.84; letter-spacing: -0.02em; }
.hero h1 .strike { position: relative; color: #55554f; white-space: nowrap; }
.hero h1 .strike::after { content: ""; position: absolute; left: -0.03em; right: -0.03em; top: 52%; height: 0.075em; background: var(--signal); transform: rotate(-3deg); }
.hero-foot { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--line-dark); }
.hero-foot p { font-size: clamp(1.1rem, 1.6vw, 1.35rem); line-height: 1.5; color: #d8d8d2; max-width: 33em; margin: 0; }
.hero-foot p b { color: #fff; font-weight: 600; }
.hero-meta { margin-top: 16px; color: var(--grey-dark); text-align: right; }

/* ── The Monday page (annotated) ──────────────────── */
.annotated { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 64px; align-items: start; }
.notes { list-style: none; margin: 0; padding: 0; }
@media (min-height: 820px) { .notes { position: sticky; top: 100px; } }
.notes li { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 18px 0; border-top: 1px solid var(--line); font-size: 1rem; line-height: 1.45; color: var(--ink-2); }
.notes li:last-child { border-bottom: 1px solid var(--line); }
.notes b { display: block; font-weight: 700; font-stretch: 85%; font-size: 1.2rem; line-height: 1.15; color: var(--ink); margin-bottom: 4px; }
.mark { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--signal); color: var(--ink); font: 600 0.62rem/1 var(--mono); font-style: normal; vertical-align: middle; flex: none; }

/* ── Brief document ───────────────────────────────── */
.memo { background: var(--page); border: 1.5px solid var(--ink); box-shadow: 10px 10px 0 var(--ink); }
.memo-mast { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 20px; padding: 12px 22px; background: var(--ink); color: #fff; }
.memo-body { padding: 34px 40px 36px; }
.memo-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-bottom: 18px; }
.status { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; font: 600 0.66rem/1 var(--mono); font-stretch: 87.5%; text-transform: uppercase; letter-spacing: 0.04em; border: 1.5px solid var(--ink); }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.status-attention { background: var(--signal); border-color: var(--signal); }
.status-progress { background: var(--ink); color: #fff; }
.status-quiet, .status-insufficient { color: var(--grey); border-color: var(--line); }
.example-tag { font: 500 0.62rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--grey); border: 1px dashed var(--grey); padding: 6px 8px; }
.memo h2.headline { font-size: clamp(2rem, 3.6vw, 3.1rem); font-stretch: 75%; line-height: 0.98; margin: 0 0 26px; }
.figures { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1.5px solid var(--ink); border-bottom: 1px solid var(--line); }
.figure { padding: 14px 0 12px; }
.figure + .figure { padding-left: 16px; border-left: 1px solid var(--line); }
.figure .n { display: block; font: 800 2.4rem/1 var(--sans); font-stretch: 70%; margin-bottom: 6px; }
.figure .label { color: var(--grey); font-size: 0.62rem; }
.figures-foot { margin: 10px 0 0; color: var(--grey); font-size: 0.62rem; }
.memo-section { margin-top: 36px; }
.memo-section > .label { display: flex; gap: 10px; align-items: center; padding-bottom: 10px; border-bottom: 1.5px solid var(--ink); }
.memo-section > .label .num { color: var(--signal-text); }
.memo-item { padding: 18px 0; border-bottom: 1px solid var(--line); }
.memo-item h3 { font-size: 1.45rem; font-stretch: 82%; font-weight: 700; line-height: 1.12; letter-spacing: 0; }
.memo-item p { margin: 6px 0 0; color: var(--ink-2); }
.memo-item .why { color: var(--ink); }
.memo-item .why b { font: 600 0.62rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; margin-right: 6px; }
.refs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ref { display: inline-flex; align-items: stretch; border: 1px solid var(--line); text-decoration: none; font: 500 0.62rem/1 var(--mono); font-stretch: 87.5%; color: var(--ink-2); }
.ref:hover { border-color: var(--ink); color: var(--ink); }
.ref > span { padding: 6px 8px; display: inline-flex; align-items: center; gap: 6px; }
.stage { text-transform: uppercase; letter-spacing: 0.03em; border-left: 1px solid var(--line); }
.stage-deployed { background: var(--signal); color: var(--ink); border-left-color: var(--signal); }
.stage-merged { background: var(--ink); color: #fff; border-left-color: var(--ink); }
.stage-open { background: repeating-linear-gradient(-45deg, #fff 0 4px, #ececE6 4px 8px); color: var(--ink); }
.stage-closed { color: var(--grey); }
.agent-tag { color: var(--grey); border-left: 1px dashed var(--line); }
.memo-agents { margin-top: 30px; padding: 16px 18px; background: var(--paper); display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: baseline; }
.memo-agents p { margin: 0; }
.blind { margin-top: 26px; color: var(--grey); font-size: 0.88rem; }
.blind ul { margin: 8px 0 0; padding-left: 1.1em; }
.memo-foot { margin-top: 26px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 0.8rem; color: var(--grey); }
.notice { border: 1.5px solid var(--signal); background: #fff3ec; padding: 12px 16px; font-size: 0.95rem; margin: 14px 0; }
.notice.ok { border-color: var(--ink); background: var(--page); }
.note { margin-top: 12px; padding: 10px 14px; border-left: 3px solid var(--signal); background: var(--paper); font-size: 0.95rem; }
.note b { font: 600 0.62rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; margin-right: 8px; }
.add-note summary { cursor: pointer; margin-top: 10px; font: 500 0.62rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--grey); list-style: none; }
.add-note summary::-webkit-details-marker { display: none; }
.add-note summary:hover { color: var(--ink); }
.add-note form { margin-top: 4px; }

/* ── Rules ────────────────────────────────────────── */
.rules { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1.5px solid var(--ink); }
.rule { padding: 28px 32px 8px 0; }
.rule + .rule { padding-left: 32px; border-left: 1px solid var(--line); }
.rule .n { display: block; font: 800 6rem/0.8 var(--sans); font-stretch: 62%; color: var(--signal); margin-bottom: 26px; }
.rule h3 { font-size: 2.4rem; font-stretch: 68%; margin-bottom: 16px; }
.rule p { color: var(--ink-2); }

/* ── Agents (dark) ────────────────────────────────── */
.agents-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.agent-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-dark); }
.agent-list li { display: flex; justify-content: space-between; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line-dark); font: 400 0.78rem/1.3 var(--mono); font-stretch: 87.5%; }
.agent-list li span:last-child { color: var(--grey-dark); text-align: right; }
.agent-list li.total { border-bottom: 1.5px solid #fff; }
.agent-list li.total span:last-child { color: var(--signal); }
.dark p.lead { font-size: 1.2rem; color: #c9c9c3; max-width: 30em; margin-top: 28px; }

/* ── Spec sheet ───────────────────────────────────── */
.spec { width: 100%; border-collapse: collapse; border-top: 1.5px solid var(--ink); }
.spec th, .spec td { text-align: left; vertical-align: top; padding: 20px 0; border-bottom: 1px solid var(--line); }
.spec th { width: 32%; font: 500 0.72rem/1.7 var(--mono); font-stretch: 87.5%; text-transform: uppercase; letter-spacing: 0.04em; color: var(--grey); padding-right: 24px; }
.spec td { font-size: 1.15rem; }
.spec td .v { font: 800 1.5rem/1 var(--sans); font-stretch: 72%; margin-right: 10px; }
.spec td .v.no { color: var(--signal-text); }

/* ── Receipt ──────────────────────────────────────── */
.pricing { display: grid; grid-template-columns: 1fr minmax(0, 440px); gap: 80px; align-items: center; }
.receipt { position: relative; background: var(--page); padding: 34px 30px 40px; font: 400 0.74rem/1.9 var(--mono); font-stretch: 87.5%; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.35); transform: rotate(1.2deg); }
.receipt::after { content: ""; position: absolute; left: 0; right: 0; bottom: -10px; height: 10px; background: linear-gradient(-45deg, transparent 6px, var(--page) 0) 0 0 / 12px 12px, linear-gradient(45deg, transparent 6px, var(--page) 0) 0 0 / 12px 12px; }
.receipt .center { text-align: center; }
.receipt .brand { font: 800 2.2rem/1 var(--sans); font-stretch: 68%; }
.receipt .row { display: flex; gap: 8px; align-items: baseline; }
.receipt .row .dots { flex: 1; border-bottom: 1.5px dotted #b5b5ae; }
.receipt hr { border: 0; border-top: 1.5px dashed #b5b5ae; margin: 14px 0; }
.receipt .total { font-weight: 700; font-size: 0.85rem; }
.receipt .total .amt { font: 800 2.6rem/1 var(--sans); font-stretch: 68%; }
.receipt .barcode { height: 40px; margin: 18px auto 6px; width: 78%; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 5px, transparent 5px 9px, var(--ink) 9px 12px, transparent 12px 13px); }
.receipt .btn { width: 100%; margin-top: 22px; }

/* ── FAQ (two audiences) ──────────────────────────── */
.faq-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.faq-cols .label { display: block; padding-bottom: 14px; border-bottom: 1.5px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; font: 700 1.3rem/1.2 var(--sans); font-stretch: 82%; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 1.2rem/1 var(--mono); color: var(--signal-text); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 12px 0 0; color: var(--ink-2); }

/* ── Closing CTA + footer ─────────────────────────── */
.closer { background: var(--signal); color: var(--ink); padding: 110px 0 100px; }
.closer h2 { font-size: clamp(3.4rem, 11vw, 10rem); line-height: 0.84; margin-bottom: 44px; }
.closer .btn { background: var(--ink); border-color: var(--ink); color: #fff; }
.closer .btn:hover { background: #fff; border-color: #fff; color: var(--ink); }
.closer .btn.ghost { background: transparent; color: var(--ink); }
.closer .btn.ghost:hover { background: var(--ink); color: #fff; }
.site-footer { background: var(--ink); color: #a9a9a2; padding: 64px 0 0; overflow: hidden; font-size: 0.9rem; }
.site-footer .cols { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 10px 24px; }
.site-footer a { color: #e8e8e2; text-decoration: none; }
.site-footer a:hover { color: var(--signal); }
.wordmark { display: block; margin-top: 64px; font: 800 clamp(5rem, 25vw, 26rem)/0.74 var(--sans); font-stretch: 62%; letter-spacing: -0.02em; color: #1c1c1a; white-space: nowrap; transform: translateY(0.12em); user-select: none; }

/* ── Inner pages & app ────────────────────────────── */
.page-head { padding: 88px 0 40px; border-bottom: 1.5px solid var(--ink); margin-bottom: 48px; }
.page-head h1 { font-size: clamp(3rem, 8vw, 6.5rem); }
.page-head p { font-size: 1.2rem; color: var(--ink-2); max-width: 36em; margin: 22px 0 0; }
.prose { font-size: 1.05rem; padding-bottom: 40px; }
.prose h2 { font-size: 2.4rem; font-stretch: 72%; margin: 56px 0 14px; }
.prose h3 { font-size: 1.5rem; font-stretch: 80%; margin: 34px 0 10px; }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose li { margin: 6px 0; }
.prose blockquote { margin: 18px 0; padding: 12px 18px; border-left: 3px solid var(--signal); background: var(--page); }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.92rem; margin: 18px 0; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 10px 14px 10px 0; text-align: left; vertical-align: top; }
.prose th { font: 500 0.68rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--grey); border-bottom: 1.5px solid var(--ink); }
.prose code { font: 400 0.85em var(--mono); background: var(--page); padding: 1px 5px; }
.prose pre { background: var(--page); padding: 16px; overflow-x: auto; white-space: pre-wrap; border: 1px solid var(--line); }
.app-main { padding-top: 48px; padding-bottom: 96px; }
.app-title { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 20px; padding-bottom: 20px; margin-bottom: 28px; border-bottom: 1.5px solid var(--ink); }
.app-title h1 { font-size: clamp(2.8rem, 6vw, 4.6rem); margin-top: 12px; }
.panel { background: var(--page); border: 1.5px solid var(--ink); padding: 30px; margin-bottom: 28px; }
.panel h2 { font-size: 2.1rem; font-stretch: 70%; margin-bottom: 10px; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.list li:first-child { padding-top: 4px; }
.list li:last-child { border-bottom: 0; padding-bottom: 0; }
.list a { font: 700 1.35rem/1.15 var(--sans); font-stretch: 82%; text-decoration: none; }
.list a:hover { color: var(--signal-text); }
.trial-bar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding: 10px 14px; background: var(--ink); color: #fff; margin-bottom: 28px; }
.trial-bar a { color: var(--signal); }

@media (max-width: 960px) {
  .section { padding: 88px 0; }
  .section-intro, .annotated, .agents-grid, .pricing, .faq-cols { grid-template-columns: 1fr; gap: 40px; }
  .notes { position: static; }
  .rules { grid-template-columns: 1fr; }
  .rule + .rule { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .noise { grid-template-columns: repeat(2, 1fr); }
  .noise-col:nth-child(n + 3) { display: none; }
  .receipt { transform: none; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .noise { padding: 0 16px; }
  .nav .hide-sm { display: none; }
  .nav { gap: 16px; }
  .hero-foot { grid-template-columns: 1fr; gap: 24px; }
  .hero-meta { text-align: left; }
  .hero-inner { padding-top: 96px; padding-bottom: 32px; }
  .memo-body { padding: 24px 18px 26px; }
  .memo { box-shadow: 6px 6px 0 var(--ink); }
  .memo-mast { padding: 10px 14px; }
  .figures { grid-template-columns: repeat(2, 1fr); }
  .figure:nth-child(3) { padding-left: 0; border-left: 0; }
  .figure:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .spec th { width: 38%; }
  .spec td { font-size: 1rem; }
  .panel { padding: 20px; }
  .rule .n { font-size: 4.4rem; }
  .btn { height: 48px; }
  .receipt { padding: 28px 20px 34px; }
}
@media (prefers-reduced-motion: reduce) {
  .noise-track { animation: none; }
  html { scroll-behavior: auto; }
}