:root {
  --ground: #F5F5F2;
  --paper: #FFFFFF;
  --ink: #0F0F10;
  --muted: #4A4A50;
  --line: #E2E2DC;
  --line-strong: #CFCFC8;
  --accent: #1F4FE0;
  --accent-hover: #163BAA;
  --night: #0B0B0D;
  --night-muted: #B4B4BC;
  --night-line: #3A3A42;
  --sky: #8FB0FF;
  --display: "Inter Tight", -apple-system, sans-serif;
  --body: Inter, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ground); color: var(--ink); font: 17px/1.6 var(--body); }
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.dark :focus-visible, .dark-band :focus-visible { outline-color: var(--sky); }

.skip-link { position: absolute; left: 16px; top: -100px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; font-weight: 600; text-decoration: none; }
.skip-link:focus { top: 12px; color: #fff; }
img, svg { display: block; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 18px/1 var(--display); letter-spacing: -0.01em; }
.brand:hover { color: var(--ink); }
.nav { display: flex; gap: 24px; font-size: 15px; font-weight: 500; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a[aria-current] { color: var(--ink); }
.dark .site-header { border-bottom-color: transparent; }
.dark .brand { color: var(--ground); }
.dark .nav a { color: var(--night-muted); }
.dark .nav a:hover, .dark .nav a[aria-current] { color: var(--ground); }

/* Type */
.eyebrow { margin: 0 0 20px; font: 500 13px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
h1, h2, h3 { font-family: var(--display); margin: 0; }
.display { font-weight: 700; font-size: clamp(44px, 7vw, 92px); line-height: 0.98; letter-spacing: -0.035em; max-width: 900px; }
.h2 { font-weight: 700; font-size: clamp(32px, 4.2vw, 52px); line-height: 1.05; letter-spacing: -0.03em; }
.lead { margin: 28px 0 40px; max-width: 620px; font-size: 20px; line-height: 1.55; color: var(--muted); }
.mono { font-family: var(--mono); font-size: 13px; }

/* Buttons */
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; border-radius: 999px; font-weight: 600; font-size: 16px; text-decoration: none; }
.btn:focus-visible { border-radius: 999px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.dark .btn-ghost { border-color: var(--night-line); color: var(--ground); }
.dark .btn-ghost:hover { border-color: var(--ground); }

/* Sections */
.hero { padding-top: 112px; padding-bottom: 96px; }
.section { padding-top: 112px; padding-bottom: 112px; }
.band { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.dark-band { background: var(--night); color: var(--ground); }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 24px; border-top: 1px solid var(--line); padding-top: 24px; }
.section-head h2 { font-size: 32px; letter-spacing: -0.02em; }

/* Apps */
.apps { display: flex; flex-wrap: wrap; gap: 20px; }
.app-feature { flex: 999 1 560px; min-width: 0; display: flex; flex-wrap: wrap; gap: 32px; align-items: center; justify-content: space-between; background: var(--ink); color: var(--ground); border-radius: 28px; padding: 40px; text-decoration: none; }
.app-feature:hover { color: var(--ground); }
.app-feature .text { flex: 1 1 280px; min-width: 0; }
.app-feature .meta { margin: 0 0 14px; font: 500 12px/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: #9A9AA2; }
.app-feature h3 { font-size: 40px; letter-spacing: -0.025em; line-height: 1.05; margin-bottom: 12px; }
.app-feature p { margin: 0 0 24px; color: #C4C4CB; }
.app-feature .more { font-weight: 600; color: var(--sky); }
.app-next { flex: 1 1 300px; min-width: 0; border: 1px dashed var(--line-strong); border-radius: 28px; padding: 40px; display: flex; flex-direction: column; justify-content: flex-end; min-height: 240px; }
.app-next h3 { font-size: 26px; letter-spacing: -0.02em; margin-bottom: 8px; }
.app-next p { margin: 0; color: var(--muted); font-size: 16px; }

/* Grids */
.principles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 48px; }
.principles .num { font: 500 13px var(--mono); color: var(--accent); margin-bottom: 14px; }
.principles h3 { font-size: 22px; letter-spacing: -0.015em; margin-bottom: 10px; }
.principles p { margin: 0; font-size: 16px; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 22px; padding: 28px; }
.card h3 { font-size: 21px; margin-bottom: 8px; }
.card p { margin: 0; font-size: 16px; line-height: 1.55; color: var(--muted); }

/* Flow */
.flow { display: flex; flex-wrap: wrap; align-items: stretch; gap: 16px; }
.flow .step { flex: 1 1 260px; min-width: 0; border: 1px solid var(--line); border-radius: 22px; padding: 28px; background: var(--ground); }
.flow .step .mono { color: var(--accent); margin-bottom: 16px; }
.flow .step h3 { font-size: 22px; margin-bottom: 8px; }
.flow .step p { margin: 0; font-size: 16px; color: var(--muted); }
.flow .arrow { display: flex; align-items: center; color: #8E8E96; font-size: 24px; }

.split { display: flex; flex-wrap: wrap; gap: 64px; }
.split > :first-child { flex: 1 1 320px; min-width: 0; }
.split > :last-child { flex: 2 1 480px; min-width: 0; }
.rules { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px 40px; }
.rules div { border-top: 2px solid var(--ink); padding-top: 16px; }
.rules h3 { font-size: 19px; margin-bottom: 6px; }
.rules p { margin: 0; font-size: 15px; color: var(--muted); }

/* Watch mockups */
.watches { flex: 0 1 424px; min-width: 0; display: flex; justify-content: center; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.watch { width: 200px; height: 244px; border-radius: 56px; background: #1C1C1F; padding: 12px; box-shadow: 0 0 0 1px #2C2C31, 0 30px 60px -20px rgba(0,0,0,.6); flex: 0 0 auto; }
.watch.sm { width: 188px; height: 228px; border-radius: 52px; }
.screen { width: 100%; height: 100%; border-radius: 46px; background: #000; padding: 22px 16px; display: flex; flex-direction: column; gap: 8px; color: #fff; font-size: 12px; line-height: 1.35; }
.watch.sm .screen { border-radius: 42px; padding: 20px 16px; }
.screen .title { display: flex; justify-content: space-between; align-items: baseline; font: 700 16px var(--display); }
.screen .title span { font: 400 11px var(--body); color: #8E8E96; }
.screen .item { background: #1E1E22; border-radius: 12px; padding: 8px 10px; }
.screen .tag { font-size: 10px; font-weight: 600; }
.tag.perm { color: var(--sky); } .tag.q { color: #F5B35C; } .tag.stop { color: #8E8E96; }
.screen .ask { font-size: 14px; font-weight: 600; }
.screen code { font: 500 10px var(--mono); color: var(--night-muted); background: #16161A; border-radius: 8px; padding: 6px 8px; }
.screen .grow { flex-grow: 1; }
.screen .yn { display: flex; gap: 6px; }
.screen .yn span { flex: 1; text-align: center; border-radius: 999px; padding: 8px 0; font-weight: 600; background: #2A2A30; }
.screen .yn .yes { background: var(--accent); }
.screen .reason { text-align: center; color: var(--night-muted); font-size: 11px; }

.badge { display: inline-block; font: 500 12px/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--sky); border: 1px solid #34406A; border-radius: 999px; padding: 6px 12px; margin-bottom: 28px; }
.hero-split { display: flex; flex-wrap: wrap; align-items: center; gap: 64px; padding-top: 88px; padding-bottom: 112px; }
.hero-split > .text { flex: 999 1 480px; min-width: 0; }
.dark-band .lead { color: var(--night-muted); max-width: 560px; }

.cta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 32px; padding-top: 96px; padding-bottom: 96px; }
.cta > div { flex: 1 1 420px; min-width: 0; }
.cta p { margin: 12px 0 0; font-size: 18px; color: var(--night-muted); }

/* Legal / prose pages */
.prose { padding-top: 80px; padding-bottom: 112px; }
.prose h1 { font-weight: 700; font-size: clamp(40px, 6vw, 64px); letter-spacing: -0.03em; line-height: 1.02; margin-bottom: 16px; }
.prose h2 { font-size: 24px; letter-spacing: -0.015em; margin: 48px 0 8px; }
.prose h3 { font-size: 18px; margin: 24px 0 4px; }
.prose .meta { color: var(--muted); font: 500 13px var(--mono); }
.prose .lead { margin: 0 0 32px; }
.prose li { margin-bottom: 6px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); }
.site-footer .wrap { padding-top: 28px; padding-bottom: 40px; display: flex; flex-direction: column; gap: 16px; font-size: 14px; color: var(--muted); }
.site-footer .row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.site-footer .fine { margin: 0; font-size: 13px; }

@media (max-width: 560px) {
  .nav { gap: 16px; }
  .hero { padding-top: 72px; padding-bottom: 64px; }
  .section { padding-top: 80px; padding-bottom: 80px; }
  .hero-split { padding-top: 48px; padding-bottom: 72px; gap: 48px; }
  .watch { width: 160px; height: 196px; border-radius: 46px; padding: 10px; }
  .watch .screen { border-radius: 38px; padding: 16px 12px; font-size: 11px; }
  .watches { gap: 14px; }
  .app-feature, .app-next { padding: 28px; }
  .flow .arrow { display: none; }
}
@media (max-width: 560px) { .watch .screen .item:nth-child(4) { display: none; } }
/* Logo C: wordmark with ripple "oo" */
.brand.wordmark { display: inline-flex; align-items: baseline; gap: 0; font: 700 23px/1 var(--display); letter-spacing: -0.035em; }
.brand.wordmark .oo { flex: none; width: 1.16em; height: 0.58em; margin: 0 0.02em; position: relative; top: 0.04em; }
.oo .b { stroke: var(--accent); }
.oo .d { fill: var(--accent); }
.dark .oo .b { stroke: #3B6BFF; }
.dark .oo .d { fill: #3B6BFF; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } .app-feature { transition: transform .2s ease; } .app-feature:hover { transform: translateY(-2px); } }

/* FAQ */
.faq { max-width: 760px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px; padding: 18px 0; font: 600 19px/1.3 var(--display); letter-spacing: -0.01em; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; font: 400 26px/1 var(--body); color: var(--muted); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0; padding: 0 40px 22px 0; font-size: 16px; color: var(--muted); }