/* Kaizin web. Page formula modelled on Atoms (atoms.jamesclear.com): centred wordmark,
   a two-voice headline, a dark slab of numbered steps, plain statements of difference.
   Palette: white paper, charcoal slate, one persimmon accent. */
:root {
  --paper: #ffffff;
  --paper-tint: #f4f2ee;
  --blob: #ece9e3;
  --ink: #15161b;
  --ink-muted: #474b5c;
  --ink-dim: #6b7085;
  --indigo: #3a3e46;
  --indigo-deep: #232529;
  --persimmon: #ff6a3d;
  --persimmon-ink: #d9481c;
  --on-deep: #ffffff;
  --on-deep-dim: rgba(255, 255, 255, 0.68);
  --line: #e4e6ef;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-weight: 400; font-size: 18px; line-height: 1.65; }
a { color: var(--indigo); text-underline-offset: 4px; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
h1, h2, h3 { margin: 0; font-variant-numeric: lining-nums; }
em { font-family: var(--serif); font-style: italic; font-weight: 500; }

/* Announcement bar */
.announce { background: var(--paper-tint); text-align: center; padding: 11px 16px; font-size: 15px; font-weight: 600; }
.announce a { color: var(--ink); text-decoration: none; }
.announce em { font-size: 17px; }

/* Masthead: centred wordmark, subtitle beneath */
.masthead { text-align: center; padding: 36px 16px 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand img { width: 30px; height: 30px; }
.brand span { font-family: var(--serif); font-size: 40px; font-weight: 500; line-height: 1; letter-spacing: -0.01em; }
.masthead p { margin: 8px 0 0; font-size: 17px; color: var(--ink-muted); }
.subnav { display: flex; justify-content: center; gap: 24px; margin-top: 14px; }
.subnav a { font-size: 16px; color: var(--ink-dim); text-decoration: none; }
.subnav a:hover, .subnav a[aria-current="page"] { color: var(--ink); }

/* Hero */
.hero { padding: 72px 0 0; position: relative; z-index: 2; }
.hero .art { margin-bottom: -150px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(46px, 6.4vw, 80px); line-height: 1.02; letter-spacing: -0.025em; font-weight: 500; }
.hero h1 em { display: block; font-size: 1.12em; letter-spacing: -0.02em; color: var(--persimmon-ink); }
.hero .lead { font-size: 20px; color: var(--ink-muted); max-width: 500px; margin: 26px 0 0; }
.stores { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.store { display: inline-flex; align-items: center; gap: 10px; padding: 10px 18px 10px 14px; border-radius: 12px; background: var(--ink); color: #fff; text-decoration: none; line-height: 1.15; }
.store svg { width: 24px; height: 24px; flex: none; }
.store small { display: block; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.72; }
.store b { font-size: 18px; font-weight: 600; }
.hero .note { font-size: 16px; color: var(--ink-dim); margin-top: 16px; }
.hero .note a { color: var(--ink-muted); }
.art { position: relative; aspect-ratio: 1 / 1; }
.art svg { width: 100%; height: 100%; }

/* Slab: the loop, as four giant numbered lines */
.slab { margin: 0 16px; border-radius: 32px; background: var(--indigo-deep); color: var(--on-deep); padding: 200px 0 104px; position: relative; z-index: 1; }
.slab .intro { font-family: var(--serif); font-size: clamp(28px, 3.4vw, 40px); line-height: 1.15; max-width: 620px; margin: 0 0 72px; }
.slab .intro em { color: var(--persimmon); }
.laws { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px 64px; }
.laws li { display: flex; align-items: flex-start; gap: 22px; position: relative; }
.laws .n { position: relative; font-family: var(--sans); font-size: clamp(92px, 11vw, 150px); font-weight: 400; line-height: 0.8; color: var(--persimmon); letter-spacing: -0.04em; flex: none; }
.laws .ring { position: absolute; left: -0.24em; top: -0.2em; width: 0.92em; height: 1.16em; pointer-events: none; }
.laws h3 { font-size: clamp(34px, 4.2vw, 56px); line-height: 0.98; font-weight: 700; letter-spacing: -0.03em; }
.laws p { margin: 14px 0 0; color: rgba(255,255,255,0.78); font-size: 18px; max-width: 360px; }

/* Difference */
.diff { padding: 120px 0 40px; }
.kicker { text-align: center; font-family: var(--serif); font-size: 30px; margin: 0 0 64px; }
.diff .wrap > .split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.diff h2 { font-size: clamp(44px, 6vw, 78px); line-height: 0.98; font-weight: 700; letter-spacing: -0.035em; }
.diff h2 em { font-weight: 500; color: var(--persimmon-ink); letter-spacing: -0.02em; }
.points { list-style: none; padding: 0; margin: 0; }
.points li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.points li:first-child { padding-top: 6px; }
.points b { display: block; font-size: 21px; font-weight: 700; letter-spacing: -0.01em; }
.points span { color: var(--ink-muted); font-size: 18px; }

/* Wearables: tinted panel of cards */
.tools { padding: 96px 0 120px; }
.tools .head { max-width: 640px; margin-bottom: 44px; }
.tools h2 { font-size: clamp(36px, 4.6vw, 56px); line-height: 1.02; font-weight: 700; letter-spacing: -0.03em; }
.tools h2 em { font-weight: 500; color: var(--persimmon-ink); }
.tools .head p { color: var(--ink-muted); margin: 18px 0 0; font-size: 20px; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.card { background: var(--paper-tint); border-radius: 22px; padding: 26px 24px 30px; }
.card .tag { font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--persimmon-ink); }
.card h3 { font-family: var(--serif); font-weight: 500; font-size: 30px; line-height: 1.08; margin: 14px 0 10px; }
.card p { margin: 0; font-size: 17px; color: var(--ink-muted); }

/* Closing CTA */
.closer { margin: 0 16px 16px; border-radius: 32px; background: var(--paper-tint); padding: 96px 0; text-align: center; }
.closer h2 { font-size: clamp(40px, 5.4vw, 68px); line-height: 1.02; font-weight: 700; letter-spacing: -0.03em; }
.closer h2 em { display: block; font-weight: 500; color: var(--persimmon-ink); }
.closer .stores { justify-content: center; }
.closer .note { font-size: 17px; color: var(--ink-muted); margin-top: 18px; }

/* Legal pages */
.doc { padding: 56px 0 104px; }
.doc .wrap { max-width: 760px; }
.doc .eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--persimmon-ink); margin: 0 0 14px; }
.doc h1 { font-size: clamp(42px, 6vw, 64px); line-height: 1.02; font-weight: 700; letter-spacing: -0.03em; }
.doc .updated { margin: 18px 0 40px; font-size: 16px; color: var(--ink-dim); }
.doc h2 { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 48px 0 12px; }
.doc h3 { font-size: 20px; font-weight: 700; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--ink-muted); }
.doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 16px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); }
.doc th { font-weight: 700; color: var(--ink); }
.callout { background: var(--paper-tint); border-radius: 16px; padding: 20px 24px; margin: 24px 0; }
.callout p { margin: 0; }

/* Footer */
.site-footer { padding: 56px 0 48px; font-size: 16px; color: var(--ink-dim); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: flex-end; }
.site-footer .word { font-family: var(--serif); font-size: 34px; color: var(--ink); line-height: 1; margin-bottom: 10px; }
.site-footer p { margin: 0; max-width: 560px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a { color: var(--ink-muted); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

@media (max-width: 900px) {
  body { font-size: 17px; }
  .wrap { padding: 0 18px; }
  .hero { padding: 48px 0 0; }
  .hero .art { margin-bottom: -110px; }
  .hero .wrap, .diff .wrap > .split { grid-template-columns: 1fr; gap: 40px; }
  .art { max-width: 420px; margin: 0 auto; width: 100%; }
  .slab, .closer { margin: 0 8px; border-radius: 24px; padding: 64px 0; }
  .slab { padding-top: 150px; }
  .closer { margin-bottom: 8px; }
  .slab .intro { margin-bottom: 48px; }
  .laws { grid-template-columns: 1fr; gap: 40px; }
  .diff { padding: 80px 0 24px; }
  .kicker { margin-bottom: 40px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tools { padding: 72px 0 88px; }
}
@media (max-width: 520px) {
  .cards { grid-template-columns: 1fr; }
}
.laws li:first-child .n { margin-left: 0.2em; margin-right: 0.22em; }

/* Hero phone */
.art { display: grid; place-items: center; }
.art .blob { position: absolute; inset: 0; width: 100%; height: 100%; }
.phone { position: relative; width: 70%; max-width: 330px; aspect-ratio: 9 / 19.2; background: #0e0f14; border-radius: 46px; padding: 10px; box-shadow: 0 30px 60px -24px rgba(18, 24, 64, 0.45); }
.screen { position: relative; height: 100%; background: #fff; border-radius: 37px; overflow: hidden; padding: 46px 16px 0; font-size: 13px; line-height: 1.35; }
.island { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 84px; height: 24px; background: #0e0f14; border-radius: 14px; }
.status { position: absolute; top: 13px; left: 26px; font-size: 12px; font-weight: 700; }
.app-head { display: flex; align-items: center; gap: 8px; margin: 6px 0 14px; }
.app-head img { width: 16px; height: 16px; }
.app-head b { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; }
.focus { background: var(--indigo-deep); color: #fff; border-radius: 16px; padding: 14px 14px 12px; }
.focus small, .list-label { display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.focus small { color: var(--persimmon); }
.focus p { margin: 6px 0 8px; font-family: var(--serif); font-size: 21px; line-height: 1.15; }
.focus .by { font-size: 12px; color: rgba(255, 255, 255, 0.66); }
.list-label { color: var(--ink-dim); margin: 16px 0 4px; }
.marker { padding: 9px 0; border-bottom: 1px solid var(--line); }
.marker > div { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.marker b { font-size: 14px; }
.marker em { font-family: var(--sans); font-style: normal; font-size: 12px; font-weight: 700; }
.marker em.ok { color: var(--indigo); }
.marker em.lo { color: var(--persimmon-ink); }
.bar { display: block; position: relative; height: 5px; border-radius: 3px; background: linear-gradient(90deg, #f3d9cf 0 22%, #e2dfd9 22% 78%, #f3d9cf 78%); }
.bar u { position: absolute; top: -3px; width: 11px; height: 11px; margin-left: -5px; border-radius: 50%; background: var(--ink); border: 2px solid #fff; }
.tabs { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-around; padding: 10px 6px 22px; border-top: 1px solid var(--line); background: #fff; font-size: 11px; font-weight: 600; color: var(--ink-dim); }
.tabs .on { color: var(--indigo); }
.body-today { margin-top: 14px; background: var(--paper-tint); border-radius: 14px; padding: 11px 12px; }
.body-today small { display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-dim); }
.body-today p { margin: 4px 0 0; font-size: 13px; color: var(--ink); }

/* Our doctor */
.doctor { padding: 40px 0 110px; }
.doctor .wrap { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 64px; align-items: center; }
.portrait { aspect-ratio: 4 / 5; border-radius: 28px; background: var(--paper-tint); display: grid; place-items: center; }
.portrait span { font-family: var(--serif); font-size: 96px; color: var(--ink-dim); }
.kicker-left { font-family: var(--serif); font-size: 28px; margin: 0 0 14px; color: var(--ink-muted); }
.doctor h2 { font-size: clamp(38px, 4.8vw, 60px); line-height: 1.02; font-weight: 700; letter-spacing: -0.03em; margin-bottom: 24px; }
.doctor h2 em { font-weight: 500; color: var(--persimmon-ink); }
.doctor p { color: var(--ink-muted); font-size: 19px; max-width: 560px; }
.doctor .sign { margin-top: 28px; font-family: var(--serif); font-size: 28px; color: var(--ink); }
.doctor .sign span { display: block; font-family: var(--sans); font-size: 16px; color: var(--ink-dim); }

/* FAQ */
.faq { padding: 40px 0 120px; }
.faq .wrap { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 64px; align-items: start; }
.faq h2 { font-size: clamp(40px, 5vw, 64px); line-height: 1; font-weight: 700; letter-spacing: -0.03em; position: sticky; top: 32px; }
.faq h2 em { display: block; font-weight: 500; color: var(--persimmon-ink); }
.qs details { border-bottom: 1px solid var(--line); }
.qs details:first-child { border-top: 1px solid var(--line); }
.qs summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; align-items: center; padding: 24px 0; font-size: 21px; font-weight: 600; letter-spacing: -0.01em; }
.qs summary::-webkit-details-marker { display: none; }
.qs summary::after { content: "+"; font-size: 30px; font-weight: 300; color: var(--persimmon-ink); line-height: 1; flex: none; }
.qs details[open] summary::after { content: "\2212"; }
.qs p { margin: 0 0 26px; color: var(--ink-muted); font-size: 18px; max-width: 620px; }
@media (max-width: 900px) {
  .doctor .wrap, .faq .wrap { grid-template-columns: 1fr; gap: 32px; }
  .portrait { max-width: 320px; }
  .faq h2 { position: static; }
  .qs summary { font-size: 19px; }
}