:root { color-scheme: light; --paper: #fafaf8; --ink: #242424; --muted: #60605e; --line: #d9d9d5; --accent: #225b88; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "Noto Sans", "Noto Sans SC", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 3px; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(1160px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; padding: 12px; background: var(--ink); color: #fff; z-index: 20; }
.skip-link:focus { top: 12px; }
.site-header { height: 100px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 10px; align-items: center; font-size: 28px; font-weight: 650; letter-spacing: -.05em; text-decoration: none; }
.brand img { border-radius: 7px; width: 30px; height: 30px; }
.site-header nav { display: flex; align-items: center; gap: 34px; font-size: 13px; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { color: var(--accent); }
.nav-demo { padding: 11px 17px; border: 1px solid #aaa; border-radius: 4px; }
.nav-demo span { margin-left: 14px; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; min-height: 730px; align-items: center; padding-block: 65px 64px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-weight: 500; }
h1 { font-size: clamp(46px, 4.3vw, 61px); line-height: 1.12; letter-spacing: -.05em; margin-bottom: 28px; }
.hero-description { max-width: 405px; color: var(--muted); font-size: 16px; line-height: 1.85; margin-bottom: 29px; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 36px; padding: 16px 23px; font-size: 14px; text-decoration: none; border-radius: 4px; font-weight: 550; transition: background .2s, transform .2s; }
.button.primary { background: var(--accent); color: #fff; }
.button:hover { background: #174463; transform: translateY(-2px); }
.text-link { text-decoration: none; font-size: 12px; font-weight: 550; line-height: 1.6; }
.text-link span { margin-left: 10px; }
a.text-link:hover { color: var(--accent); }
.quiet-note { color: var(--muted); font-size: 11px; margin: 14px 0 38px; }
.reader-preview { position: relative; height: 580px; margin: 0; display: flex; justify-content: center; align-items: center; }
.phone-frame { width: 260px; background: #fff; border: 6px solid #303030; border-radius: 28px; overflow: hidden; z-index: 1; box-shadow: 15px 24px 40px #24242424, 0 2px 3px #24242460; transform: rotate(-4deg); }
.phone-frame img { width: 100%; }
.features { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; padding-block: 100px; }
h2 { font-size: clamp(34px, 3vw, 40px); line-height: 1.18; letter-spacing: -.045em; margin-bottom: 22px; }
.section-intro { padding-top: 12px; }
.section-intro > p:last-child { max-width: 290px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.feature-list article { display: grid; grid-template-columns: 1fr 33px; align-items: start; gap: 16px; border-bottom: 1px solid var(--line); padding: 24px 0; }
.feature-list article:first-child { padding-top: 10px; }
.feature-list h3 { font-size: 16px; line-height: 1.45; font-weight: 550; margin-bottom: 9px; letter-spacing: -.2px; }
.feature-list p { color: var(--muted); font-size: 13px; line-height: 1.9; margin-bottom: 0; }
.feature-glyph { color: #93938f; font: 26px "Noto Serif SC", "Noto Serif", serif; text-align: right; }
.small-glyph { font-size: 20px; font-style: italic; }
.video-section { background: #efefec; padding-block: 74px; }
.video-layout { display: grid; grid-template-columns: 1.05fr 1fr; gap: 70px; align-items: center; }
.video-preview { margin: 0; }
.video-preview img { border: 7px solid #333; border-radius: 9px; box-shadow: 0 16px 30px #24242417; }
.video-preview figcaption { text-align: center; margin-top: 18px; font-size: 12px; font-style: italic; color: var(--muted); }
.video-copy h2 { margin-bottom: 12px; }
.video-feature-list article { padding-block: 17px; }
.video-feature-list article:first-child { padding-top: 8px; }
.how-it-works { display: grid; grid-template-columns: .85fr 1.15fr; gap: 85px; padding-block: 80px; border-bottom: 1px solid var(--line); }
.how-it-works h2 { margin-bottom: 0; }
.how-it-works-copy p { color: var(--muted); font-size: 14px; line-height: 1.85; margin-bottom: 20px; }
.how-it-works-copy p:last-child { margin-bottom: 0; }
.faq-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 85px; padding-block: 85px; }
.faq-list details { border-bottom: 1px solid var(--line); padding: 18px 0; font-size: 13px; line-height: 1.8; }
.faq-list details:first-child { padding-top: 0; }
.faq-list summary { cursor: pointer; font-weight: 550; padding-right: 20px; }
.faq-list p { color: var(--muted); margin: 15px 0 5px; }
.closing { padding: 60px 0 70px; text-align: center; border-top: 1px solid var(--line); }
.closing h2 { font-size: 46px; margin: 17px 0 27px; }
.site-footer { border-top: 1px solid var(--line); display: flex; align-items: center; gap: 28px; padding-block: 30px; }
.site-footer .brand { font-size: 24px; }
.site-footer p { font-size: 11px; color: var(--muted); margin: 0; }
.site-footer nav { margin-left: auto; display: flex; gap: 24px; font-size: 11px; }
.site-footer nav a { text-decoration: none; }
.credits { padding-block: 70px; max-width: 760px; }
.credits h1 { font-size: 48px; }
.credits p { font-size: 16px; line-height: 1.9; color: var(--muted); }
@media (min-width: 1500px) { .hero { min-height: 780px; } }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .hero { gap: 25px; }
  h1 { font-size: 48px; letter-spacing: -2px; }
  .hero-actions { gap: 20px; }
  .hero-actions .button { gap: 25px; }
  .reader-preview { height: 520px; }
  .phone-frame { width: 230px; }
  .features { gap: 50px; }
  .video-layout { gap: 38px; }
  .how-it-works { gap: 50px; }
}
@media (max-width: 720px) {
  .wrap { width: calc(100% - 40px); }
  .site-header.wrap { width: calc(100% - 32px); }
  .site-header { height: 78px; }
  .brand { font-size: 28px; gap: 8px; }
  .brand img { width: 25px; height: 25px; }
  .site-header nav { gap: 16px; font-size: 11px; }
  .site-header .nav-features, .site-header .nav-github { display: none; }
  .nav-demo { padding: 10px; }
  .nav-demo span { margin-left: 4px; }
  .hero { grid-template-columns: 1fr; gap: 15px; padding-block: 43px 35px; }
  h1 { font-size: clamp(43px, 9.7vw, 61px); letter-spacing: -2px; }
  .hero-description { font-size: 14px; max-width: 420px; margin-bottom: 24px; }
  .hero-actions { gap: 24px; }
  .button { padding: 15px 21px; }
  .quiet-note { margin-bottom: 17px; }
  .reader-preview { height: 545px; max-width: 440px; width: 100%; margin: 8px auto 0; }
  .phone-frame { width: 236px; }
  .features { grid-template-columns: 1fr; padding-block: 55px; gap: 20px; }
  .section-intro > p:last-child { max-width: 340px; }
  .section-intro h2 br { display: none; }
  h2 { font-size: 37px; }
  .feature-list article { gap: 11px; grid-template-columns: 1fr 25px; }
  .feature-list h3 { font-size: 15px; }
  .video-section { padding-block: 45px; }
  .video-layout { grid-template-columns: 1fr; gap: 32px; }
  .video-copy { max-width: 450px; }
  .how-it-works { grid-template-columns: 1fr; gap: 20px; padding-block: 55px; }
  .faq-section { grid-template-columns: 1fr; gap: 12px; padding-block: 45px; }
  .closing { padding-block: 45px; }
  .closing h2 { font-size: 43px; }
  .site-footer { flex-wrap: wrap; gap: 14px; }
  .site-footer nav { margin-left: 0; width: 100%; padding-top: 8px; }
  .credits { padding-block: 40px; }
  .credits h1 { font-size: 38px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }