/* AY Inbox landing. Daylight page; each product window sits on a painted sky:
   dawn for warmup, noon for the inbox, dusk for the brain, night for the API. */
:root {
  --page: #f5f7fa;
  --panel: #ffffff;
  --ink: #0b1220;
  --ink-2: #5b6474;
  --quiet: #8a93a3;
  --line: #e3e7ee;
  --line-2: #eef1f5;
  --sky: #0ea5e9;
  --sky-deep: #0369a1;
  --orange: #ff5b1f;
  --green: #12a150;
  --amber: #d97706;
  --f-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --wrap: 1180px;
  --gutter: max(20px, env(safe-area-inset-left, 0px));
  --radius-window: 12px;
  --shadow-window: 0 30px 60px -24px rgb(11 18 32 / 0.35), 0 12px 24px -12px rgb(11 18 32 / 0.18);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 400 16px/1.55 var(--f-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 6px; }

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 2 * var(--gutter));
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Header */
.top {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--page) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.brand img { width: 26px; height: 26px; }
.nav { display: flex; gap: 26px; margin-left: 12px; }
.nav a { text-decoration: none; color: var(--ink-2); font-size: 14.5px; transition: color 0.15s ease; }
.nav a:hover { color: var(--ink); }
.top .actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 18px; border-radius: 999px;
  font-size: 14.5px; font-weight: 500; text-decoration: none; white-space: nowrap;
  border: 1px solid transparent; transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: #1b2436; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--panel); border-color: #d3d9e2; }
.btn-text { padding: 0 10px; color: var(--ink-2); }
.btn-text:hover { color: var(--ink); }
.btn-lg { height: 48px; padding: 0 22px; font-size: 15.5px; }

/* Hero */
.hero { padding: 88px 0 40px; }
.hero h1 {
  margin: 0; max-width: 15ch;
  font-size: clamp(34px, 4.6vw, 54px); line-height: 1.06; letter-spacing: -0.035em; font-weight: 600;
  text-wrap: balance;
}
.hero p.lead { margin: 20px 0 0; max-width: 46ch; font-size: 18px; color: var(--ink-2); }
.hero .cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero .note { margin-top: 14px; font-size: 13.5px; color: var(--quiet); }

/* Painted sky: layered light, soft clouds and paint grain. */
.sky {
  position: relative; overflow: hidden; isolation: isolate;
  border-radius: 18px;
  background: var(--sky-base);
}
.sky::before, .sky::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.sky::before { background: var(--sky-clouds); z-index: -1; filter: blur(var(--cloud-blur, 18px)); transform: scale(1.08); }
.sky::after {
  z-index: 3; opacity: 0.42; mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .5  0 0 0 0 .5  0 0 0 0 .5  0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.sky-noon {
  --sky-base: linear-gradient(180deg, #5fb6ec 0%, #8fcbf0 42%, #cfe7f6 78%, #eef3f2 100%);
  --sky-clouds:
    radial-gradient(38% 16% at 22% 30%, rgb(255 255 255 / 0.85), transparent 70%),
    radial-gradient(30% 12% at 30% 36%, rgb(255 255 255 / 0.7), transparent 70%),
    radial-gradient(42% 18% at 78% 22%, rgb(255 255 255 / 0.75), transparent 70%),
    radial-gradient(60% 22% at 60% 92%, rgb(255 255 255 / 0.9), transparent 70%),
    radial-gradient(50% 18% at 10% 86%, rgb(255 255 255 / 0.8), transparent 70%);
}
.sky-dawn {
  --sky-base: linear-gradient(180deg, #4f86c6 0%, #93b7dc 38%, #f2c9a8 72%, #ffb27a 88%, #ff8f5a 100%);
  --sky-clouds:
    radial-gradient(70% 30% at 50% 108%, rgb(255 214 150 / 0.95), transparent 68%),
    radial-gradient(34% 10% at 26% 52%, rgb(255 236 220 / 0.75), transparent 70%),
    radial-gradient(40% 12% at 76% 40%, rgb(255 228 210 / 0.6), transparent 70%),
    radial-gradient(28% 9% at 60% 62%, rgb(255 205 170 / 0.6), transparent 70%);
}
.sky-dusk {
  --sky-base: linear-gradient(180deg, #2a3d78 0%, #6b5fa6 34%, #c886a8 62%, #f6a77f 84%, #ffc58e 100%);
  --sky-clouds:
    radial-gradient(44% 12% at 30% 58%, rgb(255 190 170 / 0.6), transparent 70%),
    radial-gradient(52% 14% at 74% 70%, rgb(255 170 150 / 0.55), transparent 70%),
    radial-gradient(70% 26% at 50% 104%, rgb(255 210 150 / 0.85), transparent 68%);
}
.sky-night {
  --cloud-blur: 0px;
  --sky-base: linear-gradient(180deg, #050b1c 0%, #0b1a3a 55%, #18305c 100%);
  --sky-clouds:
    radial-gradient(1.4px 1.4px at 12% 18%, #fff, transparent),
    radial-gradient(1px 1px at 27% 42%, #fff, transparent),
    radial-gradient(1.2px 1.2px at 46% 12%, #fff, transparent),
    radial-gradient(1px 1px at 63% 30%, #dbe8ff, transparent),
    radial-gradient(1.6px 1.6px at 81% 16%, #fff, transparent),
    radial-gradient(1px 1px at 90% 48%, #fff, transparent),
    radial-gradient(1px 1px at 8% 70%, #dbe8ff, transparent),
    radial-gradient(1.2px 1.2px at 34% 82%, #fff, transparent),
    radial-gradient(1px 1px at 72% 76%, #fff, transparent),
    radial-gradient(60% 40% at 50% 110%, rgb(56 132 220 / 0.45), transparent 70%);
}

.hero-stage { margin-top: 56px; padding: clamp(18px, 5vw, 64px) clamp(14px, 5vw, 64px) 0; }

/* Product windows */
.window {
  position: relative; z-index: 2; min-width: 0;
  background: var(--panel);
  border-radius: var(--radius-window) var(--radius-window) 0 0;
  box-shadow: var(--shadow-window);
  overflow: hidden;
  font-size: 13px; line-height: 1.45;
  color: var(--ink);
}
.window.whole { border-radius: var(--radius-window); }
.chrome {
  display: flex; align-items: center; gap: 12px;
  height: 36px; padding: 0 14px;
  border-bottom: 1px solid var(--line-2);
  background: #fafbfc;
}
.dots { display: flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: #dfe3ea; }
.chrome .title { flex: 1; text-align: center; color: var(--quiet); font-size: 12px; margin-right: 42px; }

/* Hero window: the Unibox */
.unibox { display: grid; grid-template-columns: 300px minmax(0, 1fr); min-height: 470px; }
.list { border-right: 1px solid var(--line-2); padding: 10px 8px; display: grid; align-content: start; gap: 2px; }
.list .head { display: flex; align-items: center; justify-content: space-between; padding: 6px 10px 10px; font-weight: 600; font-size: 13.5px; }
.list .head span { font-weight: 400; color: var(--quiet); font-size: 12px; }
.row { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 10px; padding: 9px 10px; border-radius: 9px; align-items: start; }
.row.on { background: #eef6fd; }
.av { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; font-weight: 600; color: #fff; }
.row b { display: block; font-weight: 600; font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row span { display: block; color: var(--ink-2); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row time { color: var(--quiet); font-size: 11px; }
.tag { display: inline-flex; align-items: center; gap: 5px; height: 20px; padding: 0 8px; border-radius: 999px; font-size: 11px; font-weight: 500; white-space: nowrap; }
.tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.tag-int { background: #e8f7ee; color: var(--green); }
.tag-ooo { background: #f1f3f6; color: var(--ink-2); }
.tag-meet { background: #e6f3fc; color: var(--sky-deep); }
.tag-later { background: #fdf3e2; color: var(--amber); }
.row .tags { margin-top: 6px; }
.row .tag, .row .chip-box { display: inline-flex; }

.thread { display: flex; flex-direction: column; padding: 18px 22px 18px; gap: 14px; min-width: 0; }
.thread .subject { font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.thread .meta { color: var(--quiet); font-size: 12px; margin-top: 2px; }
.msg { border: 1px solid var(--line-2); border-radius: 12px; padding: 12px 14px; max-width: 560px; }
.msg .who { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 12px; color: var(--ink-2); }
.msg .who b { color: var(--ink); font-size: 12.5px; }
.msg.out { background: #fafbfc; }
.msg.in { border-color: #cfe6f7; box-shadow: 0 1px 0 #e6f2fb; }
.draft { margin-top: auto; border: 1px solid #e2e7ee; border-radius: 14px; padding: 12px 14px 12px; background: #fff; box-shadow: 0 10px 24px -18px rgb(11 18 32 / 0.4); max-width: 600px; }
.draft .by { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--ink-2); margin-bottom: 8px; }
.draft .by svg { width: 22px; height: 22px; }
.draft .by b { color: var(--ink); font-weight: 600; }
.draft .used { margin-left: auto; color: var(--quiet); font-size: 11.5px; }
.draft p { margin: 0 0 10px; }
.slots { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 12px; }
.slot { border: 1px solid #cfe6f7; background: #f3f9fe; color: var(--sky-deep); border-radius: 8px; padding: 4px 9px; font-size: 12px; font-weight: 500; }
.draft .bar { display: flex; align-items: center; gap: 8px; }
.mini { height: 28px; padding: 0 12px; border-radius: 8px; font-size: 12px; font-weight: 500; display: inline-flex; align-items: center; border: 1px solid var(--line); background: #fff; color: var(--ink); }
.mini.primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.draft .bar .tz { margin-left: auto; color: var(--quiet); font-size: 11.5px; }


/* Hero motion: the reply arrives, then the draft appears. */
@media (prefers-reduced-motion: no-preference) {
  .js .msg.in { animation: arrive 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) 0.6s both; }
  .js .draft { animation: arrive 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) 1.6s both; }
  .js .row.on { animation: flash 1.2s ease 0.6s both; }
}
@keyframes arrive { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes flash { 0% { background: transparent; } 40% { background: #dcefff; } 100% { background: #eef6fd; } }

.pill { display: inline-flex; align-items: center; gap: 5px; height: 20px; padding: 0 8px; border-radius: 999px; font-size: 11px; font-weight: 500; background: #e8f7ee; color: var(--green); }
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* Logos */
.logos { padding: 56px 0 24px; }
.logos p { margin: 0 0 18px; text-align: center; color: var(--ink-2); font-size: 14.5px; }
.logos ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.logos li { height: 84px; display: grid; place-items: center; background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px; }
.logos img { width: auto; filter: grayscale(1); opacity: 0.72; transition: opacity 0.2s ease, filter 0.2s ease; }
.logos li:hover img { filter: none; opacity: 1; }

/* Feature rows */
.features { display: grid; gap: 28px; padding: 64px 0 24px; }
.feature {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.5fr); gap: 44px; align-items: center;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 22px; padding: 14px;
}
.feature .copy { padding: 26px 18px 26px 26px; }
.feature.flip { grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr); }
.feature.flip .copy { order: 2; padding: 26px 26px 26px 18px; }
.feature h2 { margin: 0; font-size: clamp(21px, 2.1vw, 25px); line-height: 1.25; letter-spacing: -0.02em; font-weight: 600; text-wrap: balance; }
.feature h2 span { color: var(--quiet); font-weight: 500; }
.feature .link { display: inline-flex; margin-top: 18px; color: var(--orange); text-decoration: none; font-weight: 500; font-size: 15px; }
.feature .link:hover { text-decoration: underline; text-underline-offset: 3px; }
.feature .sky { padding: clamp(18px, 4vw, 44px); min-height: 380px; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center; }
.feature .window { width: 100%; max-width: 560px; }

/* Warmup window */
.warm { padding: 16px 18px 18px; display: grid; gap: 14px; }
.warm .top-line { display: flex; align-items: center; gap: 10px; }
.warm .top-line b { font-size: 14px; }
.warm .top-line .pill { margin-left: auto; }
.chart { display: flex; align-items: flex-end; gap: 4px; height: 120px; padding-top: 8px; border-bottom: 1px solid var(--line-2); }
.chart i { flex: 1; background: linear-gradient(180deg, #ffb27a, #ff8f5a); border-radius: 3px 3px 0 0; opacity: 0.9; }
.chart i.cap { background: linear-gradient(180deg, #7cc4f0, var(--sky)); }
.axis { display: flex; justify-content: space-between; color: var(--quiet); font-size: 11px; margin-top: -8px; }
.prov { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.prov div { border: 1px solid var(--line-2); border-radius: 10px; padding: 8px 10px; }
.prov span { display: block; color: var(--quiet); font-size: 11px; }
.prov b { font-size: 15px; }

/* Inbox window */
.inbox-mini { padding: 8px; display: grid; gap: 2px; }
.inbox-mini .row { grid-template-columns: 28px minmax(0, 1fr) auto; }
.chip-box { display: inline-flex; align-items: center; height: 18px; padding: 0 7px; border-radius: 6px; background: #f1f3f6; color: var(--ink-2); font-size: 10.5px; margin-right: 6px; }

/* Brain window */
.brain { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
.brain .facts { border-right: 1px solid var(--line-2); padding: 14px 16px; display: grid; gap: 10px; align-content: start; }
.fact span { display: block; color: var(--quiet); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }
.fact p { margin: 2px 0 0; font-size: 12.5px; }
.brain .out { padding: 14px 16px; display: grid; gap: 10px; align-content: start; }
.flag { display: flex; gap: 8px; align-items: flex-start; border-radius: 10px; padding: 8px 10px; background: #fff7ed; color: #9a3412; font-size: 12px; }
.flag b { font-weight: 600; }
.uses { display: flex; flex-wrap: wrap; gap: 6px; }
.uses span { border: 1px solid var(--line); border-radius: 6px; padding: 2px 7px; font-size: 11px; color: var(--ink-2); }

/* Booking window */
.book { padding: 16px 18px; display: grid; gap: 12px; }
.booked { display: flex; align-items: center; gap: 10px; border: 1px solid #cdeeda; background: #f1fbf5; border-radius: 12px; padding: 10px 12px; }
.booked .day { width: 44px; text-align: center; border-radius: 8px; background: #fff; border: 1px solid #cdeeda; padding: 4px 0; }
.booked .day b { display: block; font-size: 16px; line-height: 1.1; }
.booked .day span { font-size: 10px; color: var(--green); text-transform: uppercase; letter-spacing: 0.06em; }
.booked p { margin: 0; font-size: 12.5px; }
.booked p span { color: var(--ink-2); }

/* API window */
.term { background: #0b1220; color: #d7e3f4; font-family: var(--f-mono); font-size: 12.5px; }
.term .chrome { background: #0f1828; border-bottom-color: #1b2740; }
.term .chrome .title { color: #6b7b95; }
.term .dots i { background: #253350; }
.term pre { margin: 0; padding: 16px 18px; overflow-x: auto; line-height: 1.7; }
.term .c { color: #6b7b95; }
.term .s { color: #ffb27a; }
.term .k { color: #7cc4f0; }
.term .g { color: #6ee7a8; }

.install { display: flex; align-items: center; gap: 10px; margin-top: 18px; max-width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 6px 6px 6px 12px; background: #fafbfc; font-family: var(--f-mono); font-size: 12.5px; }
.install code { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.copy-btn { flex: none; height: 30px; padding: 0 10px; border-radius: 7px; border: 1px solid var(--line); background: #fff; font-size: 12px; cursor: pointer; }
.copy-btn:hover { border-color: #cfd6e0; }

/* Speed to lead */
.speed { padding: 72px 0 8px; }
.speed h2, .stack h2 { margin: 0; max-width: 34ch; font-size: clamp(24px, 2.6vw, 32px); line-height: 1.22; letter-spacing: -0.025em; font-weight: 600; text-wrap: balance; }
.speed h2 span, .stack h2 span { color: var(--quiet); font-weight: 500; }
.timeline { list-style: none; margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 6px; right: 6px; top: 10px; height: 2px; background: linear-gradient(90deg, var(--sky) 0%, var(--sky) 70%, var(--orange) 100%); opacity: 0.5; }
.timeline li { position: relative; padding: 0 18px 0 0; display: grid; gap: 4px; align-content: start; }
.timeline time { font-family: var(--f-mono); font-size: 12.5px; color: var(--quiet); font-variant-numeric: tabular-nums; }
.timeline li::before { content: ""; width: 14px; height: 14px; border-radius: 50%; background: var(--panel); border: 3px solid var(--sky); margin: 4px 0 10px; position: relative; z-index: 1; }
.timeline li.done::before { border-color: var(--orange); background: var(--orange); box-shadow: 0 0 0 5px rgb(255 91 31 / 0.15); }
.timeline li { grid-template-rows: auto auto auto auto; }
.timeline b { font-size: 15.5px; letter-spacing: -0.01em; }
.timeline span { color: var(--ink-2); font-size: 14px; }
.fine { margin: 18px 0 0; color: var(--quiet); font-size: 13px; }

/* The rest of the stack */
.stack { padding: 72px 0 8px; }
.stack-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.stack-grid div { padding: 20px 22px 24px 0; border-bottom: 1px solid var(--line); display: grid; gap: 6px; align-content: start; }
.stack-grid div:not(:nth-child(4n)) { border-right: 1px solid var(--line); }
.stack-grid div:not(:nth-child(4n+1)) { padding-left: 22px; }
.stack-grid b { font-size: 15.5px; letter-spacing: -0.01em; }
.stack-grid span { color: var(--ink-2); font-size: 14px; }

/* Safe by default */
.defaults { padding: 72px 0 24px; }
.defaults h2, .closing h2 { margin: 0; font-size: clamp(26px, 3vw, 36px); letter-spacing: -0.03em; font-weight: 600; text-wrap: balance; }
.defaults > .wrap > p { margin: 12px 0 0; max-width: 58ch; color: var(--ink-2); }
.grid4 { margin-top: 30px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.stat { background: var(--panel); border: 1px solid var(--line-2); border-radius: 16px; padding: 20px 20px 22px; }
.stat b { display: block; font-size: 30px; letter-spacing: -0.03em; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat span { display: block; margin-top: 6px; color: var(--ink-2); font-size: 14px; }

/* Closing */
.closing { padding: 88px 0 96px; }
.closing .wrap { display: grid; justify-items: center; text-align: center; }
.closing p { margin: 14px 0 0; color: var(--ink-2); max-width: 46ch; }
.closing .cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 28px; }
.closing .face { width: 64px; height: 64px; margin-bottom: 22px; filter: drop-shadow(0 14px 22px rgb(11 18 32 / 0.22)); }

footer { border-top: 1px solid var(--line); padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px)); color: var(--ink-2); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
footer .brand { font-size: 16px; color: var(--ink); }
footer .links { display: flex; flex-wrap: wrap; gap: 22px; margin-left: auto; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

/* Responsive */
@media (max-width: 1000px) {
  .timeline { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .timeline::before { left: 6px; right: auto; top: 10px; bottom: 10px; width: 2px; height: auto; background: linear-gradient(180deg, var(--sky) 0%, var(--sky) 70%, var(--orange) 100%); }
  .timeline li { grid-template-columns: 26px minmax(0, 1fr); grid-template-rows: none; column-gap: 12px; padding: 0; }
  .timeline li::before { grid-row: 1 / span 3; margin: 2px 0 0; }
  .stack-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stack-grid div:not(:nth-child(4n)) { border-right: 0; }
  .stack-grid div:not(:nth-child(4n+1)) { padding-left: 0; }
  .stack-grid div:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 22px; }
  .stack-grid div:nth-child(even) { padding-left: 22px; }
  .feature, .feature.flip { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .feature.flip .copy { order: 0; }
  .feature .copy, .feature.flip .copy { padding: 22px 18px 24px; }
  .grid4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .nav, .top .btn-text { display: none; }
  .hero { padding-top: 56px; }
  .unibox { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .list { display: none; }
  .logos ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brain { grid-template-columns: minmax(0, 1fr); }
  .brain .facts { border-right: 0; border-bottom: 1px solid var(--line-2); }
  .prov { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .prov b { font-size: 13px; white-space: nowrap; }
  footer .links { margin-left: 0; }
}
@media (max-width: 560px) {
  .stack-grid { grid-template-columns: minmax(0, 1fr); }
  .stack-grid div:nth-child(odd) { border-right: 0; padding-right: 0; }
  .stack-grid div:nth-child(even) { padding-left: 0; }
}
@media (max-width: 420px) {
  .grid4 { grid-template-columns: minmax(0, 1fr); }
  .draft .bar .tz { display: none; }
}