:root {
  --bg: #111113;
  --panel: #18181b;
  --panel-2: #1f1f23;
  --key: #26262b;
  --line: #27272b;
  --line-2: #33333a;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --faint: #6e6e76;
  --red: #f87171;
  --amber: #f2c14e;
  --green: #6edc9c;
  --max: 1120px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 Inter, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; letter-spacing: -0.035em; line-height: 1.05; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; border-radius: 8px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font: 600 15px/1 Inter, system-ui, sans-serif; text-decoration: none; cursor: pointer;
  padding: 14px 20px; border-radius: 12px; border: 1px solid transparent;
  transition: background .15s, transform .1s, border-color .15s;
}
.btn:active { transform: scale(.98); }
.btn-light { background: var(--text); color: #111113; }
.btn-light:hover { background: #fff; }
.btn-dark { background: var(--panel-2); color: var(--text); border-color: var(--line-2); }
.btn-dark:hover { background: var(--key); }
.btn-sm { padding: 9px 14px; font-size: 14px; border-radius: 10px; }
.btn:disabled { opacity: .5; cursor: default; }

/* nav */
.nav-wrap { position: sticky; top: 12px; z-index: 10; padding: 0 16px; }
.nav {
  max-width: 880px; margin: 12px auto 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 8px 8px 8px 16px; border-radius: 16px;
  background: rgba(24,24,27,.82); border: 1px solid var(--line);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; text-decoration: none; letter-spacing: -.02em; }
.nav-links { display: flex; gap: 26px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14.5px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

/* hero */
.hero { max-width: var(--max); margin: 0 auto; padding: 96px 16px 0; text-align: center; }
.hero h1 { font-size: clamp(36px, 7vw, 84px); font-weight: 800; text-wrap: balance; }
.lede { max-width: 600px; margin: 22px auto 30px; font-size: 18.5px; color: var(--muted); }
.ctas { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.fine { color: var(--faint); font-size: 14px; margin: 18px 0 0; }

.video-frame {
  position: relative; margin: 64px auto 0; max-width: 1040px;
  padding: 10px; border-radius: 22px; background: var(--panel); border: 1px solid var(--line);
  box-shadow: 0 40px 100px -40px rgba(0,0,0,.9);
}
.video-frame video { width: 100%; border-radius: 13px; background: #111113; }
.video-toggle {
  position: absolute; right: 22px; bottom: 22px; width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center; cursor: pointer;
  background: rgba(17,17,19,.75); color: var(--text); border: 1px solid var(--line-2);
  opacity: 0; transition: opacity .2s;
}
.video-frame:hover .video-toggle, .video-toggle:focus-visible { opacity: 1; }
.video-toggle .i-play { display: none; }
.video-toggle.paused .i-play { display: block; }
.video-toggle.paused .i-pause { display: none; }
.caption { color: var(--faint); font-size: 13.5px; margin: 14px 0 0; }

/* sections */
.section { max-width: var(--max); margin: 0 auto; padding: 120px 16px 0; }
.head { text-align: center; max-width: 620px; margin: 0 auto 40px; }
.head h2 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 800; }
.head p { color: var(--muted); font-size: 17.5px; margin: 14px 0 0; }

/* try it */
.try { max-width: 720px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line); border-radius: 22px; padding: 22px; }
.try-drive { background: var(--panel-2); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.row.small { font-size: 12.5px; color: var(--faint); margin-top: 8px; }
.drive-name { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; }
.drive-name svg { color: var(--muted); }
.status { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 99px; transition: color .4s, background .4s; color: var(--red); background: rgba(248,113,113,.12); }
.status.amber { color: var(--amber); background: rgba(242,193,78,.12); }
.status.green { color: var(--green); background: rgba(110,220,156,.12); }
.free { margin: 14px 0 12px; color: var(--muted); }
.free b { color: var(--text); font-size: 40px; font-weight: 800; letter-spacing: -.04em; margin-right: 6px; font-variant-numeric: tabular-nums; }
.meter { height: 10px; border-radius: 99px; background: var(--key); overflow: hidden; }
.meter span { display: block; height: 100%; width: 96%; border-radius: inherit; background: var(--red); transition: width 1.4s cubic-bezier(.2,.8,.2,1), background .8s; }
.meter span.amber { background: var(--amber); }
.meter span.green { background: var(--green); }

.try-list { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 6px; }
.try-list label {
  display: grid; grid-template-columns: 22px 1fr auto 76px; align-items: center; gap: 14px;
  padding: 12px 14px; border-radius: 12px; cursor: pointer; transition: background .15s;
}
.try-list label:hover { background: var(--panel-2); }
.try-list input { position: absolute; opacity: 0; pointer-events: none; }
.try-list i { width: 20px; height: 20px; border-radius: 6px; border: 1.5px solid #45454d; display: grid; place-items: center; transition: background .15s, border-color .15s; }
.try-list input:checked + i { background: var(--text); border-color: var(--text); }
.try-list input:checked + i::after { content: ""; width: 10px; height: 6px; border: 2px solid #111113; border-top: 0; border-right: 0; transform: rotate(-45deg) translate(1px, -1px); }
.try-list input:focus-visible + i { outline: 2px solid var(--text); outline-offset: 2px; }
.try-list .t { font-weight: 600; font-size: 15px; line-height: 1.35; }
.try-list small { display: block; color: var(--faint); font-weight: 400; font-size: 13px; }
.try-list b { font-variant-numeric: tabular-nums; font-size: 15px; }
.try-list em { font-style: normal; font-size: 11.5px; font-weight: 700; text-align: center; padding: 4px 8px; border-radius: 99px; }
.try-list em.safe { color: var(--green); background: rgba(110,220,156,.1); }
.try-list em.call { color: var(--amber); background: rgba(242,193,78,.1); }
.try-list li.gone { opacity: .35; text-decoration: line-through; text-decoration-color: var(--faint); }
.try-list li.gone label { cursor: default; }

.try-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 14px; padding: 16px 6px 2px; border-top: 1px solid var(--line); }
.try-foot small { display: block; color: var(--faint); font-size: 12.5px; }
.try-foot b { font-size: 22px; font-weight: 800; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.try-actions { display: flex; align-items: center; gap: 14px; }
.link { background: none; border: 0; color: var(--muted); font: 500 14px Inter, sans-serif; cursor: pointer; padding: 6px; }
.link:hover { color: var(--text); }
.try-done { text-align: center; color: var(--muted); margin: 16px 0 4px; }
.try-done b { color: var(--green); }

/* features */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.card h3 { font-size: 18px; letter-spacing: -.02em; margin-bottom: 8px; }
.card p { color: var(--muted); margin: 0; font-size: 15px; }

.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; margin-top: 12px; padding: 28px; background: var(--panel); border: 1px solid var(--line); border-radius: 22px; }
.split img { border-radius: 12px; border: 1px solid var(--line); }
.split-title { font-size: 30px; font-weight: 800; }
.split-text { color: var(--muted); font-size: 17px; margin: 12px 0 0; }
.section.split { max-width: calc(var(--max) - 32px); margin-top: 120px; padding: 28px; }

/* safety */
.checks { list-style: none; margin: 0 auto; padding: 0; max-width: 760px; display: grid; gap: 10px; }
.checks li { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px 16px 52px; position: relative; color: var(--muted); }
.checks li::before { content: ""; position: absolute; left: 18px; top: 19px; width: 18px; height: 18px; border-radius: 6px; background: var(--text); }
.checks li::after { content: ""; position: absolute; left: 22.5px; top: 24px; width: 9px; height: 5px; border: 2px solid #111113; border-top: 0; border-right: 0; transform: rotate(-45deg); }
.checks b { color: var(--text); }

/* faq */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 10px; }
details { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 0 20px; }
summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 600; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-size: 20px; line-height: 1; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); margin: 0 0 18px; }

/* end */
.end { text-align: center; padding: 140px 16px 40px; display: grid; justify-items: center; gap: 22px; }
.end h2 { font-size: clamp(34px, 5vw, 56px); font-weight: 800; }

.footer { max-width: var(--max); margin: 60px auto 0; padding: 24px 16px 40px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--line); color: var(--faint); font-size: 14px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--text); }

/* gentle entrance, no fireworks */
.fade { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.fade.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .grid { grid-template-columns: 1fr 1fr; }
  .split, .section.split { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero { padding-top: 64px; }
  .lede { font-size: 16.5px; }
  .ctas .btn { flex: 1 1 100%; }
  .video-frame { padding: 5px; border-radius: 14px; margin-top: 44px; }
  .video-frame video { border-radius: 10px; }
  .section { padding-top: 90px; }
  .grid { grid-template-columns: 1fr; }
  .try { padding: 12px; border-radius: 18px; }
  .try-list label { grid-template-columns: 20px 1fr auto; gap: 12px; padding: 11px 8px; }
  .try-list em { display: none; }
  .try-foot { flex-direction: column; align-items: stretch; }
  .try-actions { justify-content: space-between; }
  .try-actions .btn { flex: 1; }
  .split, .section.split { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
  .fade { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}