/* abos.pro — one-page site. Colours and type from docs/brand/tokens (v2). Light theme only. */

@font-face {
  font-family: "Inter";
  src: url("assets/fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("assets/fonts/jetbrains-mono-var.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --abos-navy: #14305A;
  --abos-cyan: #0FA4E7;        /* graphics and text on dark only */
  --abos-ink: #12213D;
  --abos-white: #FFFFFF;
  --abos-cyan-deep: #0A74AB;   /* cyan text and links on light */
  --abos-text: #1B2A3F;
  --abos-slate: #5B6B82;
  --abos-ink-muted: #A9B8CC;
  --abos-line: #E3E9F1;
  --abos-mist: #F4F7FB;
  --abos-cyan-tint: #E6F5FC;

  --abos-font: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --abos-font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --abos-tracking-tight: -0.02em;
  --abos-tracking-label: 0.14em;
  --abos-radius: 12px;
  --abos-radius-sm: 8px;

  --gutter: 16px;
  --section-pad: 64px;
}

@media (min-width: 720px) {
  :root { --gutter: 32px; --section-pad: 96px; }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--abos-white);
  color: var(--abos-text);
  font-family: var(--abos-font);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
p { margin: 0 0 1em; text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; margin: 0; color: var(--abos-navy); letter-spacing: var(--abos-tracking-tight); font-weight: 700; }
h1 { font-size: clamp(38px, 7vw, 60px); line-height: 1.05; margin-bottom: 20px; }
h2 { font-size: clamp(28px, 4.4vw, 40px); line-height: 1.15; margin-bottom: 20px; max-width: 22ch; }
h3 { font-size: 20px; line-height: 1.3; margin-bottom: 8px; }

a { color: var(--abos-cyan-deep); text-underline-offset: 3px; }
a:focus-visible, .btn:focus-visible, .log-scroll:focus-visible {
  outline: 3px solid var(--abos-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.mono { font-family: var(--abos-font-mono); font-weight: 500; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 var(--gutter); }

.skip {
  position: absolute; left: 8px; top: -48px;
  background: var(--abos-navy); color: var(--abos-white);
  padding: 8px 12px; border-radius: var(--abos-radius-sm); z-index: 10;
}
.skip:focus { top: 8px; }

.eyebrow, .label, .when {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: var(--abos-tracking-label);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.eyebrow { color: var(--abos-cyan-deep); }
.label { color: var(--abos-slate); }

section { padding: var(--section-pad) 0; }
.mist { background: var(--abos-mist); }
.dark { background: var(--abos-ink); color: var(--abos-ink-muted); }
.dark h2, .dark h3 { color: var(--abos-white); }
.dark .eyebrow { color: var(--abos-cyan); }
.dark a { color: var(--abos-cyan); }

.section-lede { font-size: 19px; max-width: 60ch; color: var(--abos-text); margin-bottom: 40px; }
.punch {
  margin: 40px 0 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: var(--abos-tracking-tight);
  color: var(--abos-navy);
  max-width: 48ch;
}
.strong { color: var(--abos-white); font-weight: 600; }

/* Buttons */
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px;
  border-radius: var(--abos-radius-sm);
  font-weight: 600; font-size: 16px; text-decoration: none;
  border: 2px solid transparent;
}
.btn-primary { background: var(--abos-navy); color: var(--abos-white); }
.btn-primary:hover { background: var(--abos-ink); }
.btn-ghost { color: var(--abos-navy); border-color: var(--abos-line); background: var(--abos-white); }
.btn-ghost:hover { border-color: var(--abos-navy); }
.dark .btn-cyan, .btn-cyan { background: var(--abos-cyan); color: var(--abos-ink); }
.btn-cyan:hover { background: var(--abos-white); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(1.4) blur(8px);
  -webkit-backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--abos-line);
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand img { height: 34px; width: auto; }
.header-cta {
  font-weight: 600; font-size: 15px; text-decoration: none;
  color: var(--abos-navy);
  padding: 10px 14px; border: 1px solid var(--abos-line); border-radius: var(--abos-radius-sm);
}
.header-cta:hover { border-color: var(--abos-navy); }

/* 1. Hero */
.hero { padding-top: 56px; background: linear-gradient(180deg, var(--abos-white) 0%, var(--abos-mist) 100%); }
.hero-grid { display: grid; gap: 48px; align-items: center; }
.tagline {
  font-size: clamp(20px, 2.6vw, 24px);
  line-height: 1.4;
  font-weight: 600;
  color: var(--abos-navy);
  max-width: 34ch;
  margin-bottom: 20px;
}
.lede { font-size: 18px; max-width: 52ch; }

.swap {
  margin: 0;
  background: var(--abos-white);
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius);
  padding: 8px 20px 16px;
  box-shadow: 0 12px 40px rgba(20, 48, 90, 0.08);
}
.swap-row { padding: 16px 0; border-bottom: 1px solid var(--abos-line); }
.swap-row .label { margin-bottom: 6px; }
.swap-row .mono { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--abos-text); }
.swap mark { background: var(--abos-cyan-tint); color: var(--abos-navy); padding: 1px 2px; border-radius: 4px; }
.swap-out { margin: 0 -20px; padding: 16px 20px; background: var(--abos-navy); border-bottom: 0; }
.swap-out .label { color: var(--abos-cyan); }
.swap-out .mono { color: var(--abos-white); }
.swap-out mark { background: rgba(15, 164, 231, 0.22); color: var(--abos-white); }
.swap figcaption { font-size: 13px; color: var(--abos-slate); padding-top: 12px; }

@media (min-width: 960px) {
  .hero { padding-top: 88px; }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 64px; }
}

/* 2. The moment */
.moment-grid { display: grid; gap: 32px; align-items: center; }
.moment-art img { width: 100%; max-width: 440px; margin: 0 auto; }
.moment blockquote {
  margin: 0 0 24px;
  padding-left: 20px;
  border-left: 3px solid var(--abos-cyan);
  font-size: 21px;
  line-height: 1.45;
  color: var(--abos-white);
  font-weight: 500;
}
@media (min-width: 900px) {
  .moment-grid { grid-template-columns: 0.9fr 1.1fr; gap: 64px; }
}

/* 3. How it works */
.steps {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 16px;
}
.step {
  position: relative;
  background: var(--abos-mist);
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius);
  padding: 24px;
}
.step p:last-child { margin: 0; }
.step h3 { display: flex; align-items: center; gap: 12px; font-size: 22px; margin-bottom: 10px; }
.num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--abos-white); border: 1.5px solid var(--abos-cyan-deep);
  color: var(--abos-cyan-deep); font-size: 14px; font-weight: 700; letter-spacing: 0;
}
.step-out { background: var(--abos-navy); border-color: var(--abos-navy); color: var(--abos-ink-muted); }
.step-out h3 { color: var(--abos-white); }
.step-out .label { color: var(--abos-cyan); }
.step-out .num { background: transparent; border-color: var(--abos-cyan); color: var(--abos-cyan); }

@media (min-width: 640px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) {
  .steps { grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .step:not(:last-child)::after {
    content: "";
    position: absolute; right: -17px; top: 50%;
    width: 10px; height: 10px;
    border-top: 2px solid var(--abos-cyan-deep);
    border-right: 2px solid var(--abos-cyan-deep);
    transform: translateY(-50%) rotate(45deg);
  }
}

/* 4. Outcomes */
.tiles { display: grid; gap: 16px; }
.tile {
  background: var(--abos-white);
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius);
  padding: 24px;
  display: flex; flex-direction: column;
}
.tile h3 { margin-bottom: 20px; }
.chip {
  margin: auto 0 0;
  background: var(--abos-mist);
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius-sm);
  padding: 12px 14px;
  font-size: 14px; line-height: 1.55; color: var(--abos-navy);
}
.tile-navy { background: var(--abos-navy); border-color: var(--abos-navy); }
.tile-navy h3 { color: var(--abos-white); }
.tile-navy .label { color: var(--abos-cyan); }
.tile-navy .chip { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.16); color: var(--abos-white); }
@media (min-width: 860px) { .tiles { grid-template-columns: repeat(3, 1fr); gap: 24px; } }

.tiles-note { margin: 16px 0 0; font-size: 14px; color: var(--abos-slate); }

/* 5. The log */
.log-figure { margin: 0; }
.log-scroll {
  overflow-x: auto;
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius);
  background: var(--abos-white);
  box-shadow: 0 12px 40px rgba(20, 48, 90, 0.08);
  -webkit-overflow-scrolling: touch;
}
.log-scroll img { width: 100%; min-width: 760px; }
.log-figure figcaption {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  margin-top: 12px; font-size: 14px; color: var(--abos-slate);
}
.log-figure figcaption span:first-child { font-weight: 600; color: var(--abos-text); }
@media (min-width: 800px) {
  .log-scroll img { min-width: 0; }
  .hint { display: none; }
}

/* 6. Why now */
.timeline {
  list-style: none; margin: 8px 0 0; padding: 0;
  display: grid; gap: 28px;
  position: relative;
}
.timeline li { position: relative; padding-left: 32px; }
.timeline li::before {
  content: "";
  position: absolute; left: 0; top: 3px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--abos-white); border: 3px solid var(--abos-cyan-deep);
}
.timeline li:not(:last-child)::after {
  content: "";
  position: absolute; left: 6px; top: 24px; bottom: -24px;
  width: 2px; background: var(--abos-line);
}
.timeline p:last-child { margin: 0; }
.when { color: var(--abos-cyan-deep); margin-bottom: 6px; }
.regions { display: grid; gap: 40px; }
.region-name {
  font-size: 15px; font-weight: 700; color: var(--abos-navy);
  letter-spacing: var(--abos-tracking-tight);
  margin-bottom: 16px;
}
.source { margin: 24px 0 0; font-size: 13px; color: var(--abos-slate); max-width: 80ch; }

@media (min-width: 860px) {
  .timeline { grid-template-columns: repeat(3, 1fr); gap: 32px; padding-top: 28px; }
  .timeline::before {
    content: ""; position: absolute; left: 0; right: 0; top: 6px;
    height: 2px; background: var(--abos-line);
  }
  .timeline li { padding-left: 0; padding-top: 20px; }
  .timeline li::before { top: -28px; }
  .timeline li:not(:last-child)::after { display: none; }
}

/* 7. Alongside */
.compare { display: grid; gap: 16px; }
.compare-col {
  border-radius: var(--abos-radius);
  padding: 24px;
  background: var(--abos-mist);
  border: 1px solid var(--abos-line);
}
.compare-head { font-size: 20px; font-weight: 700; color: var(--abos-navy); letter-spacing: var(--abos-tracking-tight); margin-bottom: 16px; }
.compare dl { margin: 0; display: grid; gap: 4px 0; }
.compare dt {
  font-size: 12px; font-weight: 600; letter-spacing: var(--abos-tracking-label);
  text-transform: uppercase; color: var(--abos-slate);
  margin-top: 14px;
}
.compare dt:first-child { margin-top: 0; }
.compare dd { margin: 0; font-size: 17px; color: var(--abos-text); }
.compare-abos { background: var(--abos-navy); border-color: var(--abos-navy); }
.compare-abos .compare-head { color: var(--abos-white); }
.compare-abos dt { color: var(--abos-cyan); }
.compare-abos dd { color: var(--abos-white); }
@media (min-width: 760px) { .compare { grid-template-columns: 1fr 1fr; gap: 24px; } }

/* 8. Pilot */
.pilot-grid { display: grid; gap: 32px; align-items: center; }
.pilot-copy p { max-width: 52ch; font-size: 18px; }
.pilot-art img { width: 100%; max-width: 440px; margin: 0 auto; }
@media (min-width: 900px) { .pilot-grid { grid-template-columns: 1.1fr 0.9fr; gap: 64px; } }

/* 9. Team */
.founders { display: grid; gap: 16px; margin-top: 8px; }
.founder {
  border: 1px solid var(--abos-line);
  border-radius: var(--abos-radius);
  padding: 24px;
  background: var(--abos-white);
}
.founder h3 { font-size: 24px; margin-bottom: 12px; }
.founder p:last-child { margin: 0; }
@media (min-width: 760px) { .founders { grid-template-columns: 1fr 1fr; gap: 24px; } }

/* Footer */
.site-footer { padding: 56px 0 64px; font-size: 15px; }
.footer-grid { display: grid; gap: 32px; }
.footer-logo { height: 36px; width: auto; margin-bottom: 14px; }
.expansion {
  font-size: 12px; font-weight: 600; letter-spacing: var(--abos-tracking-label);
  text-transform: uppercase; color: var(--abos-white); margin: 0;
}
.footer-meta p { margin: 0 0 8px; }
@media (min-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1.5fr; align-items: start; }
  .footer-meta { text-align: right; }
}