:root {
  color-scheme: dark;
  --color-bg: #09110e;
  --color-bg-glow: #173c31;
  --color-panel: #121d18;
  --color-panel-raised: #18251f;
  --color-line: #2b4137;
  --color-line-soft: #1c2d26;
  --color-ink: #f7f3ea;
  --color-ink-soft: #d9dfdc;
  --color-muted: #9ba9a2;
  --color-faint: #718079;
  --color-brand: #d9a441;
  --color-brand-soft: #f2d48d;
  --color-on-brand: #19150a;
  --color-green: #69c6a4;
  --color-green-soft: #17372d;
  --color-danger: #ff9d9d;
  --color-shadow: #000000;
  --font-ui: system-ui, -apple-system, "PingFang SC", "Segoe UI", sans-serif;
  --font-display: Georgia, "Songti SC", "STSong", serif;
  --radius-card: 26px;
  --radius-control: 15px;
  --radius-pill: 999px;
  --layout-content-max-width: 1120px;
  --layout-section-gap: 72px;
  --layout-card-padding: 26px;
  font-family: var(--font-ui);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100svh;
  background:
    radial-gradient(circle at 88% -8%, var(--color-bg-glow) 0, transparent 34rem),
    radial-gradient(circle at -10% 45%, var(--color-line-soft) 0, transparent 30rem),
    var(--color-bg);
  color: var(--color-ink);
}

main {
  width: min(100%, var(--layout-content-max-width));
  margin: auto;
  padding: env(safe-area-inset-top) 20px calc(34px + env(safe-area-inset-bottom));
}

.site-header, header {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--color-line-soft);
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--color-ink); text-decoration: none; font-weight: 800; }
.mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: 13px;
  color: var(--color-brand);
  background: var(--color-panel);
  font-size: 25px;
}
.header-link { display: none; margin-left: auto; color: var(--color-muted); text-decoration: none; min-height: 44px; align-items: center; padding-inline: 12px; }
header button {
  min-width: 48px;
  min-height: 44px;
  margin-left: auto;
  color: var(--color-brand-soft);
  background: none;
  border: 0;
  font: inherit;
  font-weight: 750;
}
.header-link + button { margin-left: 0; }

.hero-install-grid { display: grid; gap: 24px; padding: 48px 0 24px; }
.hero { align-self: center; padding: 14px 4px; }
.eyebrow { margin: 0; color: var(--color-brand); font-size: 12px; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
h1, h2 { font-family: var(--font-display); letter-spacing: -.035em; }
h1 { max-width: 760px; margin: 14px 0 20px; font-size: clamp(44px, 11vw, 78px); line-height: .98; }
h2 { margin: 10px 0 18px; font-size: clamp(30px, 7vw, 48px); line-height: 1.08; }
h3 { margin: 8px 0 10px; font-size: 20px; line-height: 1.3; }
p { line-height: 1.65; }
.lede { max-width: 690px; margin: 0; color: var(--color-muted); font-size: 17px; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.hero-pills span { padding: 8px 12px; border: 1px solid var(--color-line); border-radius: var(--radius-pill); color: var(--color-ink-soft); font-size: 13px; background: var(--color-panel); }

.card {
  border: 1px solid var(--color-line);
  background: linear-gradient(145deg, var(--color-panel-raised), var(--color-panel));
  border-radius: var(--radius-card);
  padding: var(--layout-card-padding);
  box-shadow: 0 24px 70px color-mix(in srgb, var(--color-shadow) 34%, transparent);
}
.install-card { position: relative; overflow: hidden; }
.install-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--color-green), var(--color-brand)); }
.install-card h2 { font-size: 30px; }
.step { display: flex; align-items: center; gap: 14px; padding: 10px 0; color: var(--color-ink-soft); }
.step b { flex: 0 0 auto; display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--color-line); border-radius: 50%; color: var(--color-brand); }
.step span { display: grid; gap: 2px; }
.step strong { font-size: 15px; }
.step small { color: var(--color-muted); font-size: 13px; }

.primary {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 22px;
  padding: 15px 18px;
  border: 0;
  border-radius: var(--radius-control);
  background: var(--color-brand);
  color: var(--color-on-brand);
  text-decoration: none;
  font: inherit;
  font-weight: 850;
  font-size: 16px;
  cursor: pointer;
  transition: transform .2s ease, filter .2s ease;
}
.primary:hover { transform: translateY(-1px); filter: brightness(1.06); }
.primary:disabled { opacity: .55; }
.fine { color: var(--color-faint); text-align: center; font-size: 13px; }
.workflow-card { max-width: 720px; margin: 30px auto var(--layout-section-gap); }

.trust-strip { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 22px 4px 0; }
.trust-strip span { display: flex; align-items: center; gap: 9px; color: var(--color-muted); font-size: 13px; }
.trust-strip i { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--color-green-soft); color: var(--color-green); font-style: normal; }

.module { padding-block: var(--layout-section-gap); }
.section-heading { max-width: 760px; margin-bottom: 32px; }
.section-heading p:not(.eyebrow), .ownership-copy > p:last-child, .final-cta > p:not(.eyebrow) { color: var(--color-muted); font-size: 17px; }
.section-heading.compact { max-width: 650px; }
.feature-grid { display: grid; gap: 14px; }
.feature {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--color-panel) 91%, transparent);
}
.feature p:last-child { margin-bottom: 0; color: var(--color-muted); }
.feature-icon { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--color-line); border-radius: 14px; color: var(--color-brand-soft); background: var(--color-panel-raised); font-weight: 800; }
.feature-label { margin: 18px 0 0; color: var(--color-brand); font-size: 11px; font-weight: 850; letter-spacing: .14em; }
.mini-note { align-self: stretch; display: grid; align-content: center; gap: 9px; margin-top: 22px; padding: 18px; border-radius: 18px; background: var(--color-bg); border: 1px solid var(--color-line-soft); }
.mini-note span { display: block; height: 6px; border-radius: 3px; background: var(--color-line); }
.mini-note span.short { width: 66%; }
.mini-note em { margin-top: 8px; color: var(--color-green); font-size: 12px; font-style: normal; }
.language-sample { display: grid; gap: 8px; margin-top: 22px; }
.language-sample span { width: fit-content; max-width: 100%; padding: 9px 12px; border-radius: 12px 12px 12px 3px; background: var(--color-bg); color: var(--color-ink-soft); font-size: 13px; }
.language-sample span:nth-child(2) { margin-left: auto; border-radius: 12px 12px 3px; background: var(--color-green-soft); }

.ownership-section { display: grid; gap: 30px; border-block: 1px solid var(--color-line-soft); }
.ownership-copy { align-self: start; }
.ownership-list { display: grid; }
.ownership-list article { display: grid; grid-template-columns: 42px 1fr; gap: 12px; padding: 22px 0; border-top: 1px solid var(--color-line-soft); }
.ownership-list article:first-child { border-top: 0; }
.ownership-list article > b { color: var(--color-brand); font: 700 15px var(--font-display); }
.ownership-list h3 { margin-top: 0; }
.ownership-list p { margin-bottom: 0; color: var(--color-muted); }

.faq-list { border-top: 1px solid var(--color-line); }
.faq-list details { border-bottom: 1px solid var(--color-line); }
.faq-list summary { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 12px 2px; list-style: none; cursor: pointer; font-weight: 750; font-size: 17px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--color-brand); font-size: 24px; font-weight: 400; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { margin: 0; padding: 0 34px 22px 2px; color: var(--color-muted); }

.final-cta { text-align: center; margin-bottom: 24px; padding-inline: 22px; border: 1px solid var(--color-line); border-radius: var(--radius-card); background: radial-gradient(circle at 50% 0, var(--color-bg-glow), var(--color-panel)); }
.final-cta h2 { max-width: 700px; margin-inline: auto; }
.final-button { max-width: 420px; margin-inline: auto; }

.hidden { display: none !important; }
.account-choice { min-height: 52px; display: flex; align-items: center; margin: 10px 0; padding: 15px; border: 1px solid var(--color-line); border-radius: var(--radius-control); }
.account-choice input { margin-right: 10px; }
.spinner { width: 52px; height: 52px; border: 3px solid var(--color-line-soft); border-top-color: var(--color-green); border-radius: 50%; animation: spin 1s linear infinite; }
.bar { height: 5px; margin-top: 26px; overflow: hidden; border-radius: 5px; background: var(--color-line-soft); }
.bar i { display: block; height: 100%; width: 45%; background: linear-gradient(90deg, var(--color-green), var(--color-brand)); animation: move 2s ease-in-out infinite; }
.success { text-align: center; }
.check { display: grid; place-items: center; width: 58px; height: 58px; margin: auto; border-radius: 50%; background: var(--color-green-soft); color: var(--color-green); font-size: 30px; }
.error { color: var(--color-danger); }
.detail-line { margin-top: 14px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; line-height: 1.5; color: var(--color-faint); word-break: break-word; }
.help-link { display: inline-block; margin-top: 18px; color: var(--color-brand); font-weight: 600; }

footer { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 18px 4px; color: var(--color-faint); font-size: 12px; }
footer nav { display: flex; gap: 8px 24px; }
footer a { min-height: 44px; display: inline-flex; align-items: center; color: var(--color-faint); text-underline-offset: 3px; }
.legal { max-width: 760px; padding: 34px 0 60px; }
.legal h1 { font-size: clamp(36px, 10vw, 58px); }
.legal h2 { margin-top: 32px; font-size: 24px; }
.legal p, .legal li { color: var(--color-muted); font-size: 16px; line-height: 1.7; }
.legal a { color: var(--color-brand); }

:focus-visible { outline: 3px solid var(--color-brand); outline-offset: 3px; }
@keyframes spin { to { transform: rotate(1turn); } }
@keyframes move { 50% { width: 85%; transform: translateX(18%); } }

@media (min-width: 720px) {
  main { padding-inline: 34px; }
  .header-link { display: inline-flex; }
  .hero-install-grid { grid-template-columns: minmax(0, 1.35fr) minmax(330px, .65fr); gap: 46px; padding-block: 70px 34px; }
  .install-card { align-self: center; }
  .trust-strip { grid-template-columns: repeat(3, 1fr); padding-top: 30px; }
  .trust-strip span { justify-content: center; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-wide { grid-column: 1 / -1; display: grid; grid-template-columns: 44px minmax(0, 1fr) minmax(190px, .55fr); gap: 0 20px; }
  .feature-wide .feature-label { margin-top: 0; }
  .feature-wide > div:first-of-type { grid-column: 2; }
  .feature-wide > div:last-child { grid-column: 3; grid-row: 1; margin-top: 0; }
  .ownership-section { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 70px; }
  footer { flex-direction: row; justify-content: space-between; }
}

@media (min-width: 980px) {
  .feature-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .feature-wide { grid-column: span 2; grid-template-columns: 44px minmax(0, 1fr); }
  .feature-wide > div:first-of-type { grid-column: 2; }
  .feature-wide > div:last-child { grid-column: 1 / -1; grid-row: auto; margin-top: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}