/* Dark, matching the app's Windows 11 dark look: near-black neutrals with a cool bias,
   the logo's patina teal for actions and its golden flame for emphasis. */
:root {
  --bg: #111318; --bg2: #161920; --card: #1b1e26; --card2: #20242d;
  --line: rgba(255, 255, 255, .08); --line2: rgba(255, 255, 255, .13);
  --text: #eef0f5; --text2: #b6bbc8; --text3: #848a9b;
  --accent: #4fdcc0; --teal: #2ec4a6; --teal-deep: #0f6f80; --flame: #ff8a2a; --gold: #ffdb5c; --err: #ff7a7a;
  --full: #6ccb5f; --partial: #ffc83d; --none: #4a4f5c;
  --display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --body: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--body); }
a { color: inherit; }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .9em; color: var(--text2); }
section, .nav, footer { padding-left: max(20px, calc((100vw - 1140px) / 2)); padding-right: max(20px, calc((100vw - 1140px) / 2)); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

/* navigation */
.nav { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; height: 62px;
  background: rgba(17, 19, 24, .82); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 600; text-decoration: none; }
.nav nav { display: flex; gap: 24px; align-items: center; font-size: 15px; }
.nav nav a { text-decoration: none; color: var(--text2); }
.nav nav a:hover { color: var(--text); }
.nav nav a.btn, .nav nav a.btn:hover { color: #032521; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; border-radius: 10px; font-weight: 600; text-decoration: none;
  color: #032521; background: linear-gradient(135deg, #46dcbc, #1fa58f); box-shadow: 0 10px 30px rgba(46, 196, 166, .28); }
button.btn { border: 0; font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.1); }
.btn svg { width: 18px; height: 18px; fill: currentColor; }
.btn.small { padding: 8px 14px; font-size: 14px; box-shadow: none; }
.btn.ghost { background: var(--card); color: var(--text); border: 1px solid var(--line2); box-shadow: none; }
.btn.ghost:hover { background: var(--card2); }

/* hero */
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; padding-top: 76px; padding-bottom: 56px;
  background: radial-gradient(60rem 30rem at 85% 30%, rgba(46, 196, 166, .15), transparent 60%),
              radial-gradient(40rem 26rem at 10% 0%, rgba(255, 138, 42, .10), transparent 60%); }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: .03em; }
h1 { margin: 0; font: 700 clamp(34px, 4.6vw, 56px)/1.07 var(--display); letter-spacing: -.02em; text-wrap: balance; }
.grad { background: linear-gradient(120deg, var(--gold), var(--flame)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin: 22px 0 28px; font-size: 18px; color: var(--text2); max-width: 600px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.cta.center { justify-content: center; }
.fine { color: var(--text3); font-size: 14px; margin: 14px 0 0; }
.fine.center { text-align: center; }
.hero-shot { display: flex; justify-content: center; min-width: 0; }
.hero-shot img { width: 100%; max-width: 420px; height: auto; border-radius: 12px; border: 1px solid var(--line2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 0 1px rgba(79, 220, 192, .05); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding-top: 8px; padding-bottom: 40px; }
.stats div { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.stats b { display: block; font: 700 26px/1.2 var(--display); font-variant-numeric: tabular-nums; }
.stats span { color: var(--text3); font-size: 13px; }

/* headings */
h2 { font: 700 clamp(26px, 3vw, 36px)/1.2 var(--display); letter-spacing: -.01em; margin: 0 0 10px; text-align: center; text-wrap: balance; }
.sub { color: var(--text2); margin: 0 auto 30px; text-align: center; max-width: 640px; }
.features, .support, .how, .privacy, .faq, .shots, .account { padding-top: 64px; padding-bottom: 64px; }

/* features */
.fgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr)); gap: 16px; }
.fgrid article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px 22px 18px; }
.fgrid h3 { margin: 0 0 10px; font: 600 18px/1.3 var(--display); }
.fgrid ul { margin: 0; padding-left: 18px; color: var(--text2); font-size: 15px; display: grid; gap: 6px; }
.fgrid li::marker { color: var(--accent); }
.fgrid b { color: var(--text); font-weight: 600; }

/* screenshots */
.shots { display: grid; grid-template-columns: 1fr 1.6fr 1fr; gap: 22px; align-items: start; background: var(--bg2); border-block: 1px solid var(--line); }
.shots figure { margin: 0; text-align: center; min-width: 0; }
.shots img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line2); box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
.shots figcaption { color: var(--text3); font-size: 14px; margin-top: 12px; }

/* support matrix */
.legend { display: flex; gap: 18px; justify-content: center; color: var(--text2); font-size: 14px; margin-bottom: 18px; }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.dot.full, .cbar .full { background: var(--full); }
.dot.partial, .cbar .partial { background: var(--partial); }
.dot.none, .cbar .none { background: var(--none); }
.coverage { max-width: 860px; margin: 0 auto 30px; display: grid; gap: 10px; }
.crow { display: grid; grid-template-columns: 150px 1fr 190px; gap: 14px; align-items: center; }
.cname { font-size: 14px; color: var(--text); }
.cnum { font-size: 13px; color: var(--text3); font-variant-numeric: tabular-nums; }
.cbar { display: flex; height: 12px; border-radius: 6px; overflow: hidden; background: var(--card2); gap: 2px; }
.cbar i { display: block; height: 100%; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.matrix { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 860px; }
.matrix th, .matrix td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.matrix thead th { color: var(--text3); font-weight: 600; font-size: 12px; letter-spacing: .04em; text-transform: uppercase; background: var(--card2); }
.matrix tbody tr:last-child th, .matrix tbody tr:last-child td { border-bottom: 0; }
.matrix tbody th { font-weight: 600; white-space: nowrap; }
.matrix tbody th small { display: block; color: var(--text3); font-weight: 400; font-size: 12px; }
.matrix td.f, .matrix td.p, .matrix td.n { white-space: nowrap; font-weight: 600; font-size: 13px; }
.matrix td.f::before, .matrix td.p::before, .matrix td.n::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 7px; vertical-align: 1px; }
.matrix td.f { color: var(--full); } .matrix td.f::before { background: var(--full); }
.matrix td.p { color: var(--partial); } .matrix td.p::before { background: var(--partial); }
.matrix td.n { color: var(--text3); } .matrix td.n::before { background: var(--none); }
.matrix td.src { color: var(--text2); min-width: 240px; }

/* account */
.account { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center; }
.account h2 { text-align: left; }
.account p { color: var(--text2); margin: 0 0 16px; max-width: 520px; }
.account ul { margin: 0 0 26px; padding-left: 18px; color: var(--text2); display: grid; gap: 6px; }
.account li::marker { color: var(--accent); }
.account-shots { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; min-width: 0; }
.account-shots img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line2); box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }

/* register page */
.auth { display: flex; justify-content: center; padding: 56px 20px 80px; min-height: calc(100vh - 140px);
  background: radial-gradient(40rem 22rem at 50% 0%, rgba(46, 196, 166, .13), transparent 70%); }
.auth-card { width: 100%; max-width: 460px; align-self: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 32px 32px 26px; text-align: center; box-shadow: 0 30px 80px rgba(0, 0, 0, .35); }
.auth-logo { display: block; margin: 0 auto 16px; }
.auth h1 { font: 700 28px/1.2 var(--display); margin: 0 0 8px; letter-spacing: -.01em; text-wrap: balance; }
.auth-lead { color: var(--text2); margin: 0 0 22px; font-size: 15px; }
.auth-fine { color: var(--text3); font-size: 13px; margin: 18px 0 0; line-height: 1.55; }
.form { display: grid; gap: 16px; text-align: left; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input { width: 100%; padding: 11px 13px; font: inherit; font-size: 15px; color: var(--text); background: var(--bg);
  border: 1px solid var(--line2); border-radius: 9px; }
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79, 220, 192, .18); }
.field.invalid input { border-color: var(--err); }
.field-error { color: var(--err); font-size: 13px; margin: 6px 0 0; }
.field-hint { color: var(--text3); font-size: 13px; margin: 6px 0 0; }
.form-error { background: rgba(255, 122, 122, .1); border: 1px solid rgba(255, 122, 122, .3); color: #ffc2c2; border-radius: 10px;
  padding: 10px 14px; font-size: 14px; margin: 0 0 18px; text-align: left; }
.btn.wide { width: 100%; justify-content: center; margin-top: 6px; }
.steps { text-align: left; color: var(--text2); margin: 0 auto 24px; padding-left: 22px; display: grid; gap: 8px; max-width: 360px; }

/* how / privacy / faq */
.how ol { max-width: 780px; margin: 26px auto 0; padding-left: 22px; color: var(--text2); display: grid; gap: 12px; }
.how b { color: var(--text); }
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.pgrid p { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; color: var(--text2); }
.pgrid b { display: block; color: var(--text); margin-bottom: 6px; font-size: 17px; }
.faq details { max-width: 780px; margin: 12px auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 15px 20px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--text2); margin: 10px 0 0; }
.download { text-align: center; padding-top: 80px; padding-bottom: 90px;
  background: radial-gradient(40rem 20rem at 50% 30%, rgba(46, 196, 166, .14), transparent 70%); }
.download h2 { margin: 18px 0 22px; }
footer { border-top: 1px solid var(--line); color: var(--text3); font-size: 13px; padding-top: 22px; padding-bottom: 30px; text-align: center; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .shots { grid-template-columns: 1fr; }
  .pgrid { grid-template-columns: 1fr; }
  .account { grid-template-columns: 1fr; }
  .auth-card { padding: 26px 20px 22px; }
  .crow { grid-template-columns: 1fr; gap: 4px; }
  .nav nav a:not(.btn) { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }