/* Vintage Tech: shop window. Light, editorial, one highlighter. */
:root {
  --paper: #f5f4ef;
  --paper-2: #ecebe4;
  --card: #fffffc;
  --ink: #0d0e10;
  --ink-2: #2a2d33;
  --muted: #62676f;
  --line: #dcdad1;
  --lime: #c8ff2e;
  --lime-ink: #2f4a00;
  --cyan: #5ee6ff;
  --ok: #1f8a4c;
  --warn: #b26a00;
  /* Vintage Air (dark) */
  --g-bg: #0a0b0d; --g-panel: #111317; --g-panel-2: #171a1f; --g-line: #23272e; --g-text: #e7e9ec; --g-dim: #9aa1ab; --g-mute: #646b75;
  --ui: "Space Grotesk", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1200px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --paper: #111214; --paper-2: #17191c; --card: #1a1c20; --ink: #eeeee9; --ink-2: #d2d3cf; --muted: #9a9ea5; --line: #2b2e33; --lime-ink: #c8ff2e; --ok: #4fd08a; --warn: #ffb020; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--ui); -webkit-font-smoothing: antialiased; overflow-x: clip; }
a { color: inherit; }
img, svg { max-width: 100%; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }
.kicker { margin: 0 0 14px; font: 500 12px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.serif { font-family: var(--serif); font-weight: 400; font-style: italic; letter-spacing: -.01em; }
.hl { background: linear-gradient(transparent 58%, var(--lime) 58%, var(--lime) 92%, transparent 92%); padding: 0 .08em; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hl { background: none; color: var(--lime); } }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 22px; border-radius: 999px; border: 1.5px solid var(--ink);
  font: 600 15px/1 var(--ui); text-decoration: none; cursor: pointer; transition: transform .15s, background .2s, color .2s; background: var(--ink); color: var(--paper); }
.btn:hover { transform: translateY(-1px); }
.btn.line { background: transparent; color: var(--ink); }
.btn.line:hover { background: var(--ink); color: var(--paper); }
.btn.lime { background: var(--lime); border-color: var(--lime); color: #0d1400; }
.btn .arr { transition: transform .2s; } .btn:hover .arr { transform: translateX(3px); }
.btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none; }

/* nav */
.nav { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.nav.edge { border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.logo svg { width: 30px; height: 30px; }
.logo .v { fill: none; stroke: currentColor; stroke-width: 7; stroke-linecap: square; }
.logo .d { fill: var(--cyan); }
.logo b { font: 700 20px/1 var(--ui); letter-spacing: -.03em; }
.logo b span { font-weight: 500; color: var(--muted); }
.nav-links { display: flex; gap: 26px; }
.nav-links a { text-decoration: none; font: 500 15px/1 var(--ui); color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; }
.nav .btn { min-height: 40px; padding: 0 18px; font-size: 14px; }

/* hero */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(48px, 7vw, 90px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { margin: 0; font: 600 clamp(46px, 7.4vw, 100px)/.96 var(--ui); letter-spacing: -.045em; }
.hero h1 .serif { font-size: 1.08em; letter-spacing: -.02em; }
.hero p.lede { margin: 26px 0 0; max-width: 560px; font-size: clamp(18px, 1.6vw, 21px); color: var(--ink-2); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 36px; font: 400 13px/1.4 var(--mono); color: var(--muted); }
.hero-meta b { color: var(--ink); font-weight: 500; }

/* fanned product stack */
.stack { position: relative; height: clamp(340px, 38vw, 460px); }
.stack .card { position: absolute; left: 50%; top: 50%; width: min(300px, 78%); padding: 22px; border-radius: 18px; background: var(--card); border: 1px solid var(--line);
  box-shadow: 0 30px 60px -30px rgba(13, 14, 16, .35); transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.stack .card i { display: block; width: 40px; height: 40px; border-radius: 11px; margin-bottom: 16px; }
.stack .card b { display: block; font: 600 22px/1.1 var(--ui); letter-spacing: -.02em; }
.stack .card span { display: block; margin-top: 6px; font-size: 14px; color: var(--muted); }
.stack .card em { display: inline-block; margin-top: 16px; padding: 4px 9px; border-radius: 999px; font: 500 11px/1.3 var(--mono); font-style: normal; background: var(--paper-2); color: var(--ink-2); }
.stack .c1 { transform: translate(-78%, -82%) rotate(-9deg); }
.stack .c2 { transform: translate(-22%, -62%) rotate(6deg); }
.stack .c3 { transform: translate(-70%, -6%) rotate(4deg); }
.stack .air { transform: translate(-24%, -2%) rotate(-5deg); background: var(--g-bg); border-color: var(--g-line); color: var(--g-text); }
.stack .air span { color: var(--g-dim); } .stack .air em { background: var(--g-panel-2); color: var(--lime); }
.stack:hover .c1 { transform: translate(-86%, -90%) rotate(-12deg); } .stack:hover .c2 { transform: translate(-12%, -70%) rotate(9deg); }
.stack:hover .c3 { transform: translate(-80%, 2%) rotate(6deg); } .stack:hover .air { transform: translate(-14%, 6%) rotate(-8deg); }

/* proof strip */
.proof { border-block: 1px solid var(--line); background: var(--paper-2); }
.proof .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 34px; padding-block: 18px; font: 400 14px/1.4 var(--mono); color: var(--muted); }
.proof a { color: var(--ink); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.proof a:hover { text-decoration: underline; text-underline-offset: 4px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 18%, transparent); }

/* sections */
section { scroll-margin-top: 80px; }
.sec { padding: clamp(72px, 10vw, 130px) 0; }
.sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px 48px; align-items: end; margin-bottom: 48px; }
.sec-head h2 { margin: 0; font: 600 clamp(36px, 5vw, 64px)/1 var(--ui); letter-spacing: -.04em; }
.sec-head p { margin: 0; color: var(--ink-2); max-width: 520px; }

/* Vintage Air block (dark) */
.airblock { background: var(--g-bg); color: var(--g-text); border-radius: 28px; margin: 0 var(--gutter); overflow: hidden; position: relative; }
.airblock::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px); background-size: 28px 28px; }
.airblock .inner { position: relative; max-width: var(--max); margin: 0 auto; padding: clamp(48px, 7vw, 96px) clamp(22px, 4vw, 56px); display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
.airblock .kicker { color: var(--lime); }
.airblock h2 { margin: 0; font: 600 clamp(40px, 5.6vw, 76px)/.98 var(--ui); letter-spacing: -.045em; }
.airblock h2 .a { color: var(--cyan); font-weight: 500; }
.airblock p { color: var(--g-dim); }
.airblock ul.ticks { list-style: none; margin: 26px 0 32px; padding: 0; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 12px; align-items: baseline; }
.ticks li::before { content: "→"; color: var(--lime); font-family: var(--mono); }
.airblock .btn.line { color: var(--g-text); border-color: var(--g-line); }
.airblock .btn.line:hover { background: var(--g-text); color: var(--g-bg); }

/* drawn workspace mock (an illustration, not a screenshot) */
.mock { border-radius: 14px; border: 1px solid var(--g-line); background: var(--g-panel); box-shadow: 0 40px 100px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(200,255,46,.06); overflow: hidden; font-family: var(--mono); font-size: 11px; color: var(--g-dim); }
.mock-bar { display: flex; align-items: center; gap: 10px; height: 34px; padding: 0 12px; border-bottom: 1px solid var(--g-line); background: var(--g-panel-2); }
.mock-bar .v { width: 16px; height: 16px; } .mock-bar .v path { stroke: var(--lime); stroke-width: 7; fill: none; stroke-linecap: square; } .mock-bar .v circle { fill: var(--cyan); }
.mock-bar b { color: var(--g-text); font: 600 12px/1 var(--ui); } .mock-bar b span { color: var(--cyan); font-weight: 500; }
.mock-bar .search { flex: 1; max-width: 240px; margin: 0 auto; height: 20px; border-radius: 4px; border: 1px solid var(--g-line); display: flex; align-items: center; padding: 0 8px; color: var(--g-mute); }
.mock-bar .led { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 8px var(--lime); }
.mock-grid { display: grid; grid-template-columns: 1fr 1.5fr; grid-template-rows: auto auto; gap: 8px; padding: 8px; }
.mp { border: 1px solid var(--g-line); border-radius: 8px; background: var(--g-bg); overflow: hidden; }
.mp h4 { margin: 0; padding: 7px 10px; font: 600 11px/1 var(--ui); color: var(--g-text); border-bottom: 1px solid var(--g-line); background: var(--g-panel-2); }
.mp h4 i { font-style: normal; color: var(--lime); margin-right: 6px; font-family: var(--mono); }
.mp .row { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-bottom: 1px solid var(--g-line); }
.mp .row:last-child { border-bottom: 0; }
.mp .sq { width: 18px; height: 18px; border-radius: 4px; flex: none; }
.mp .row b { color: var(--g-text); font: 500 11px/1.2 var(--ui); flex: 1; }
.mp .on { color: var(--lime); } .mp .off { color: var(--g-mute); }
.term { padding: 10px 12px; line-height: 1.7; white-space: pre; color: var(--g-text); min-height: 150px; }
.term .p { color: #ff4d5e; } .term .k { color: var(--cyan); } .term .g { color: var(--lime); } .term .m { color: var(--g-mute); }
.term .cur { display: inline-block; width: 7px; height: 13px; background: var(--lime); vertical-align: -2px; animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.spark { height: 46px; margin: 8px 10px 10px; }
.spark path { fill: none; stroke: var(--lime); stroke-width: 1.6; }
.spark .fill { fill: rgba(200,255,46,.12); stroke: none; }
.mock-wide { grid-column: 1 / -1; }

/* product cards */
.products { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1100px) { .products { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .products { grid-template-columns: 1fr; } }
.prod { display: flex; flex-direction: column; padding: 26px; border-radius: 20px; background: var(--card); border: 1px solid var(--line); transition: transform .25s, box-shadow .25s, border-color .25s; }
.prod:hover { transform: translateY(-4px); box-shadow: 0 30px 60px -36px rgba(13,14,16,.45); border-color: var(--ink-2); }
.prod-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 26px; }
.prod-ic { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; font: 700 18px/1 var(--ui); color: #0d0e10; }
.chip { padding: 5px 10px; border-radius: 999px; font: 500 11px/1.2 var(--mono); border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.chip.ready { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 8%, transparent); }
.chip.build { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.prod h3 { margin: 0; font: 600 28px/1.05 var(--ui); letter-spacing: -.03em; }
.prod .line { margin: 8px 0 0; font-size: 17px; color: var(--ink-2); }
.prod .for { margin: 14px 0 0; font: 400 12px/1.5 var(--mono); color: var(--muted); }
.prod ul { list-style: none; margin: 18px 0 22px; padding: 18px 0 0; border-top: 1px solid var(--line); display: grid; gap: 8px; font-size: 14.5px; color: var(--ink-2); }
.prod li { display: flex; gap: 10px; } .prod li::before { content: "✓"; color: var(--ok); font-weight: 700; }
.prod-foot { margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.prod-foot .price { font: 600 15px/1 var(--ui); } .prod-foot .price small { display: block; margin-bottom: 4px; font: 400 11px/1 var(--mono); color: var(--muted); }
.prod-foot .btn { min-height: 40px; padding: 0 16px; font-size: 14px; }
.prod .proofline { margin: 14px 0 0; font: 400 12px/1.4 var(--mono); color: var(--muted); }
.prod .proofline a { color: var(--ink); }

/* how it works */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: s; }
.step { padding: 28px; border-radius: 20px; border: 1px solid var(--line); background: var(--card); }
.step::before { counter-increment: s; content: "0" counter(s); display: block; margin-bottom: 40px; font: 500 13px/1 var(--mono); color: var(--muted); }
.step h3 { margin: 0 0 8px; font: 600 22px/1.15 var(--ui); letter-spacing: -.02em; }
.step p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 16px; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--card); }
.tier { padding: 24px 28px; border-right: 1px solid var(--line); }
.tier:last-child { border-right: 0; }
.tier b { display: block; font: 600 18px/1.2 var(--ui); } .tier span { display: block; margin-top: 6px; color: var(--muted); font-size: 14.5px; }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 32px; align-items: center; padding: clamp(32px, 5vw, 56px); border-radius: 28px; background: var(--ink); color: var(--paper); }
.contact h2 { margin: 0; font: 600 clamp(34px, 4.6vw, 58px)/1 var(--ui); letter-spacing: -.04em; }
.contact p { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.contact .box { padding: 22px; border-radius: 16px; border: 1px dashed color-mix(in srgb, var(--paper) 30%, transparent); font: 400 14px/1.6 var(--mono); }
.contact .box b { display: block; margin-bottom: 6px; font: 600 16px/1.3 var(--ui); color: var(--lime); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .contact { background: var(--card); color: var(--ink); border: 1px solid var(--line); } :root:not([data-theme="light"]) .contact p { color: var(--muted); } }

/* footer */
.foot { padding: 48px 0 56px; color: var(--muted); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; }
.foot .logo { margin-right: auto; color: var(--ink); }
.foot a { text-decoration: none; } .foot a:hover { color: var(--ink); text-decoration: underline; }

/* note line under buttons */
.note { margin: 10px 0 0; font: 400 13px/1.5 var(--mono); color: var(--muted); min-height: 1.5em; }

/* reveal */
.js .rv { opacity: 0; transform: translateY(18px); transition: opacity .7s, transform .7s cubic-bezier(.2, .7, .2, 1); }
.js .rv.in { opacity: 1; transform: none; } /* hidden only when JS runs, so no-JS visitors see everything */

/* ---------- /air page (dark) ---------- */
body.air { background: var(--g-bg); color: var(--g-text);
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 28px 28px; }
body.air .nav { background: rgba(10, 11, 13, .82); }
body.air .nav.edge { border-bottom-color: var(--g-line); }
body.air .logo b span { color: var(--cyan); }
body.air .nav-links a { color: var(--g-dim); } body.air .nav-links a:hover { color: var(--g-text); }
body.air .btn { background: var(--lime); border-color: var(--lime); color: #0d1400; }
body.air .btn.line { background: transparent; color: var(--g-text); border-color: var(--g-line); }
body.air .btn.line:hover { background: var(--g-text); color: var(--g-bg); }
body.air .kicker { color: var(--lime); }
body.air .hero h1 .a { color: var(--cyan); font-weight: 500; }
body.air .hero p.lede { color: var(--g-dim); }
body.air .hero-meta { color: var(--g-mute); } body.air .hero-meta b { color: var(--g-text); }
.air-hero .wrap { grid-template-columns: 1fr; text-align: center; justify-items: center; }
.air-hero .cta { justify-content: center; }
.air-hero .mock { width: min(1000px, 100%); margin-top: 56px; text-align: left; }
.feat { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 1100px) { .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .feat { grid-template-columns: 1fr; } }
.f { padding: 24px; border-radius: 16px; border: 1px solid var(--g-line); background: var(--g-panel); }
.f i { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 18px; border-radius: 10px; background: var(--g-panel-2); color: var(--lime); font: 700 14px/1 var(--mono); font-style: normal; border: 1px solid var(--g-line); }
.f h3 { margin: 0 0 6px; font: 600 19px/1.2 var(--ui); letter-spacing: -.01em; }
.f p { margin: 0; color: var(--g-dim); font-size: 15px; }
body.air .sec-head h2 { color: var(--g-text); } body.air .sec-head p { color: var(--g-dim); }
.why { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.why div { padding: 26px; border-radius: 16px; border: 1px solid var(--g-line); }
.why b { display: block; font: 600 40px/1 var(--ui); color: var(--lime); letter-spacing: -.03em; }
.why span { display: block; margin-top: 10px; color: var(--g-dim); font-size: 15px; }
.soon { padding: clamp(32px, 5vw, 56px); border-radius: 24px; border: 1px solid var(--g-line); background: var(--g-panel); text-align: center; }
.soon h2 { margin: 0; font: 600 clamp(32px, 4.4vw, 54px)/1.05 var(--ui); letter-spacing: -.04em; }
.soon p { color: var(--g-dim); max-width: 560px; margin: 16px auto 28px; }
body.air .foot { color: var(--g-mute); } body.air .foot .logo { color: var(--g-text); } body.air .foot a:hover { color: var(--g-text); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap, .airblock .inner, .sec-head, .contact { grid-template-columns: 1fr; }
  .stack { height: 360px; max-width: 520px; width: 100%; margin: 0 auto; }
  .steps, .tiers, .why { grid-template-columns: 1fr; }
  .tier { border-right: 0; border-bottom: 1px solid var(--line); } .tier:last-child { border-bottom: 0; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .airblock { border-radius: 20px; margin: 0 10px; }
  .mock-grid { grid-template-columns: 1fr; }
  .mock-bar .search { display: none; }
  .stack .card { width: 66%; padding: 16px; }
  .stack .card b { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } .rv { opacity: 1; transform: none; } }

/* ================= v3: multi-page ================= */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .28s; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 99; padding: 10px 14px; border-radius: 8px; background: var(--ink); color: var(--paper); }
.skip:focus { left: 8px; }
.nav-links a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; text-decoration-color: var(--lime); }
body.air .nav-links a[aria-current="page"] { color: var(--g-text); }
.menu { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: transparent; cursor: pointer; position: relative; }
.menu span { position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform .25s, top .25s; }
.menu span:first-child { top: 15px; } .menu span:last-child { top: 24px; }
.nav.open .menu span:first-child { top: 20px; transform: rotate(45deg); } .nav.open .menu span:last-child { top: 20px; transform: rotate(-45deg); }
body.air .menu { border-color: var(--g-line); } body.air .menu span { background: var(--g-text); }
.center { text-align: center; margin: 40px 0 0; }
.muted { color: var(--muted); } .small { font-size: 13px; }
body.air .muted { color: var(--g-dim); }

/* page heads */
.page-hero { padding: clamp(56px, 8vw, 110px) 0 clamp(24px, 4vw, 48px); }
.page-hero h1 { margin: 0; font: 600 clamp(44px, 7vw, 92px)/.98 var(--ui); letter-spacing: -.045em; max-width: 14ch; }
.page-hero .narrow h1, .narrow h1 { max-width: 18ch; }
.page-hero .lede { margin: 22px 0 0; max-width: 620px; font-size: clamp(18px, 1.6vw, 21px); color: var(--ink-2); }
.sec.tight { padding: clamp(28px, 4vw, 56px) 0; }
.narrow { max-width: 900px; }

/* filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.fchip { height: 40px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink-2); font: 500 14px/1 var(--ui); cursor: pointer; }
.fchip span { margin-left: 6px; font: 500 12px/1 var(--mono); color: var(--muted); }
.fchip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); } .fchip[aria-pressed="true"] span { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.prod.hide { display: none; }

/* whole card clickable */
.prod { position: relative; }
.prod-link { position: absolute; inset: 0; z-index: 1; border-radius: inherit; }
.prod .proofline a { position: relative; z-index: 2; }
.prod-ic { background: var(--a, var(--ink)); }
.prod-foot .more { font: 600 14px/1 var(--ui); display: inline-flex; gap: 6px; align-items: center; }
.prod:hover .more .arr { transform: translateX(4px); } .more .arr { transition: transform .2s; }
.legend-box { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 24px; border-radius: 20px; border: 1px dashed var(--line); }
.legend-box p { margin: 10px 0 0; color: var(--ink-2); font-size: 15px; }

/* product page hero */
.p-hero { position: relative; padding: clamp(40px, 6vw, 80px) 0 clamp(48px, 7vw, 96px); overflow: hidden; }
.p-hero::before { content: ""; position: absolute; right: -10%; top: -30%; width: 70vw; height: 140%; z-index: -1;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--a) 22%, transparent), transparent 70%); }
.p-hero-in { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.crumb { display: inline-block; margin-bottom: 26px; font: 500 13px/1 var(--mono); color: var(--muted); text-decoration: none; }
.crumb:hover { color: var(--ink); }
.p-title { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.prod-ic.big { width: 56px; height: 56px; border-radius: 16px; font-size: 24px; }
.p-hero h1 { margin: 0; font: 600 clamp(56px, 9vw, 120px)/.9 var(--ui); letter-spacing: -.055em; }
.p-line { margin: 12px 0 0; font: 400 clamp(26px, 3vw, 38px)/1.15 var(--serif); font-style: italic; color: var(--ink-2); }
.p-hero .lede { margin: 20px 0 0; max-width: 560px; font-size: 18px; color: var(--ink-2); }
.p-visual { display: grid; justify-items: center; }
.caption { margin: 18px 0 0; font-size: 12px; color: var(--muted); text-align: center; }

/* the phone (illustration) */
.phone { position: relative; width: min(300px, 78vw); aspect-ratio: 9 / 18.5; padding: 12px; border-radius: 46px; background: #0d0e10;
  box-shadow: 0 50px 90px -40px color-mix(in srgb, var(--a) 70%, #000), 0 0 0 1px rgba(255,255,255,.06) inset, 0 0 0 10px color-mix(in srgb, var(--a) 14%, transparent);
  transform: rotate(-3deg); transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.p-visual:hover .phone { transform: rotate(0) translateY(-6px); }
.phone-notch { position: absolute; top: 20px; left: 50%; width: 84px; height: 24px; transform: translateX(-50%); border-radius: 20px; background: #000; z-index: 2; }
.screen { height: 100%; border-radius: 36px; background: #fbfaf7; color: #14161a; overflow: hidden; padding: 52px 14px 14px; display: flex; flex-direction: column; gap: 10px; font: 400 12px/1.35 var(--ui); }
.s-top { display: flex; justify-content: space-between; align-items: center; } .s-top b { font: 700 19px/1 var(--ui); letter-spacing: -.02em; } .s-top span { font-size: 12px; color: #6b7078; }
.s-hero { padding: 12px; border-radius: 14px; background: color-mix(in srgb, var(--a) 18%, #fff); font-size: 13px; }
.s-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.s-item { padding: 8px; border-radius: 12px; background: #fff; border: 1px solid #ecebe6; } .s-item i { display: block; height: 52px; border-radius: 8px; margin-bottom: 6px; }
.s-item b { display: block; font-size: 11.5px; } .s-item span { font: 500 11px/1 var(--mono); color: #6b7078; }
.s-plug { font: 500 11px/1.3 var(--mono); color: #1f8a4c; }
.s-btn { margin-top: auto; padding: 13px; border-radius: 14px; background: var(--a); color: #0d0e10; font-weight: 700; text-align: center; font-size: 13px; }
.s-card { padding: 10px 12px; border-radius: 14px; background: #fff; border: 1px solid #ecebe6; } .s-card small { display: block; font: 500 10.5px/1 var(--mono); color: #6b7078; margin-bottom: 5px; }
.s-card b { display: block; font-size: 13px; } .s-card span { font-size: 11.5px; color: #6b7078; }
.s-card.hot { border-color: var(--a); background: color-mix(in srgb, var(--a) 12%, #fff); } .s-card.hot small { color: #0d0e10; }
.s-todo { font-size: 12px; color: #2a2d33; padding: 2px 4px; }
.s-voice { margin-top: auto; padding: 12px; border-radius: 999px; background: #0d0e10; color: #fff; font-size: 11.5px; display: flex; gap: 8px; align-items: center; }
.s-voice .mic { color: var(--a); animation: blink 1.2s steps(2) infinite; }
.rooms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.r { padding: 12px 0; border-radius: 10px; text-align: center; font: 600 11.5px/1 var(--mono); background: #eceae4; color: #8a8f97; }
.r.free { background: color-mix(in srgb, var(--a) 22%, #fff); color: #0d0e10; box-shadow: inset 0 0 0 1.5px var(--a); }
.s-top.wa { margin: -52px -14px 0; padding: 52px 14px 12px; background: #075e54; color: #fff; } .s-top.wa span { color: #b8e1da; }
.chat { flex: 1; display: flex; flex-direction: column; gap: 8px; padding-top: 6px; }
.chat .day { align-self: center; margin: 0; padding: 4px 10px; border-radius: 8px; background: #e7f0ee; font-size: 10.5px; color: #4f5a58; }
.msg { margin: 0; max-width: 88%; padding: 8px 10px 16px; border-radius: 12px; font-size: 12px; position: relative; }
.msg small { position: absolute; right: 8px; bottom: 3px; font-size: 9.5px; color: #6b7078; }
.msg.out { align-self: flex-end; background: #dcf8c6; border-top-right-radius: 3px; } .msg.in { align-self: flex-start; background: #fff; border-top-left-radius: 3px; }
.s-sent { padding: 10px; border-radius: 12px; background: color-mix(in srgb, var(--a) 18%, #fff); font: 500 11px/1.3 var(--mono); text-align: center; }

/* features */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; }
.feat-i { padding: 28px; background: var(--card); }
.feat-i b { display: block; font: 600 19px/1.2 var(--ui); letter-spacing: -.015em; }
.feat-i b::before { content: ""; display: block; width: 26px; height: 4px; border-radius: 4px; margin-bottom: 18px; background: var(--a); }
.feat-i p { margin: 8px 0 0; color: var(--ink-2); font-size: 15px; }

/* two columns + faq */
.two { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.h2 { margin: 0; font: 600 clamp(32px, 4vw, 52px)/1.02 var(--ui); letter-spacing: -.04em; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; padding: 20px 0; font: 600 18px/1.3 var(--ui); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 24px/1 var(--ui); color: var(--muted); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: -6px 0 20px; color: var(--ink-2); max-width: 620px; }
.lede-sm { margin: 0 0 16px; font-size: 18px; color: var(--ink-2); }

/* other products */
.minis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mini { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 16px; border: 1px solid var(--line); background: var(--card); text-decoration: none; transition: border-color .2s, transform .2s; }
.mini:hover { border-color: var(--ink-2); transform: translateY(-2px); }
.mini > span:nth-child(2) { flex: 1; } .mini b { display: block; font: 600 17px/1.2 var(--ui); } .mini small { display: block; font-size: 13px; color: var(--muted); }
.mini .prod-ic { width: 38px; height: 38px; border-radius: 11px; font-size: 15px; flex: none; }

/* tiers (how page) */
.tiers.big { margin-top: 0; }
.tiers.big .tier { padding: 30px; }
.tier .t-n { display: block; margin-bottom: 26px; font: 500 12px/1 var(--mono); color: var(--muted); }
.tiers.big .tier b { font-size: 24px; letter-spacing: -.02em; }
.tier ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 6px; font-size: 14.5px; color: var(--ink-2); }
.tier li::before { content: "→ "; color: var(--muted); font-family: var(--mono); }
.tier.hi { background: var(--ink); color: var(--paper); } .tier.hi span, .tier.hi li { color: color-mix(in srgb, var(--paper) 72%, transparent); } .tier.hi .t-n { color: var(--lime); }

/* about */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.pr { padding: 26px; border-radius: 20px; background: var(--card); border: 1px solid var(--line); }
.pr .mono { font-size: 12px; color: var(--muted); } .pr h3 { margin: 30px 0 8px; font: 600 21px/1.15 var(--ui); letter-spacing: -.02em; } .pr p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* contact band (every page) */
.band { padding: 0 0 clamp(56px, 8vw, 100px); }
.band-in { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 32px; align-items: center; padding: clamp(32px, 5vw, 60px) !important; border-radius: 28px; background: var(--ink); color: var(--paper); max-width: calc(var(--max) - 2 * var(--gutter)); }
.band .kicker { color: var(--lime); }
.band h2 { margin: 0; font: 600 clamp(34px, 4.6vw, 60px)/1 var(--ui); letter-spacing: -.045em; }
.band p { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.band .btn.big { min-height: 58px; padding: 0 28px; font-size: 17px; }
.band .mono { font-family: var(--mono); margin: 14px 0 0; } .band a:not(.btn) { color: inherit; }
.band.dark .band-in { background: var(--g-panel); border: 1px solid var(--g-line); color: var(--g-text); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .band:not(.dark) .band-in { background: var(--card); color: var(--ink); border: 1px solid var(--line); } :root:not([data-theme="light"]) .band:not(.dark) p { color: var(--muted); } :root:not([data-theme="light"]) .tier.hi { background: var(--paper-2); color: var(--ink); } }

/* responsive */
@media (max-width: 1000px) {
  .p-hero-in, .two, .band-in { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr 1fr; } .minis { grid-template-columns: 1fr; } .principles { grid-template-columns: 1fr 1fr; } .legend-box { grid-template-columns: 1fr; }
  .p-visual { margin-top: 12px; }
}
.m-only { display: none; }
@media (max-width: 720px) {
  .menu { display: block; } .nav-cta { display: none; } .nav-links .m-only { display: block; color: var(--ink); font-weight: 600; border-bottom: 0; }
  .nav-links { display: flex; position: absolute; left: 0; right: 0; top: 68px; flex-direction: column; gap: 0; padding: 8px var(--gutter) 18px;
    background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 30px 40px -30px rgba(0,0,0,.3); opacity: 0; transform: translateY(-8px); pointer-events: none; transition: opacity .2s, transform .2s; }
  .nav.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 14px 0; font-size: 18px; border-bottom: 1px solid var(--line); }
  body.air .nav-links { background: var(--g-bg); border-color: var(--g-line); } body.air .nav-links a { border-color: var(--g-line); }
  .feat-grid, .principles { grid-template-columns: 1fr; }
}