:root {
  color-scheme: dark;
  --bg: #09070f;
  --panel: rgba(255,255,255,.055);
  --panel-strong: rgba(255,255,255,.09);
  --text: #f8f7ff;
  --muted: #a9a3b7;
  --line: rgba(255,255,255,.12);
  --brand: #8b5cf6;
  --brand-2: #ff2d75;
  --green: #15d47b;
  --shadow: 0 30px 90px rgba(0,0,0,.5);
}

:root.light {
  color-scheme: light;
  --bg: #f7f5ff;
  --panel: rgba(255,255,255,.8);
  --panel-strong: #fff;
  --text: #15111f;
  --muted: #635d70;
  --line: rgba(20,12,35,.12);
  --shadow: 0 28px 80px rgba(74,46,130,.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: radial-gradient(circle at top, rgba(139,92,246,.2), transparent 36rem), var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.glow { position: fixed; width: 18rem; height: 18rem; border-radius: 50%; filter: blur(70px); pointer-events: none; opacity: .32; z-index: -1; }
.glow-a { background: var(--brand); top: 7rem; left: -5rem; }
.glow-b { background: var(--brand-2); right: -6rem; bottom: 12rem; }

.nav-wrap { position: sticky; top: 10px; z-index: 10; display: flex; justify-content: center; padding: 10px; }
.nav {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px;
  border: 1px solid var(--line);
  background: rgba(25, 22, 31, .78);
  backdrop-filter: blur(18px);
  border-radius: 999px;
  box-shadow: var(--shadow);
}
:root.light .nav { background: rgba(255,255,255,.72); }
.nav a, .icon-btn {
  border: 0;
  color: var(--muted);
  background: transparent;
  padding: 11px 15px;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
}
.nav a.active, .nav a:hover, .icon-btn:hover { color: var(--text); background: var(--panel); }

.section-pad { width: min(960px, calc(100% - 32px)); margin: 0 auto; padding: 42px 0 40px; }
.slim { width: min(850px, calc(100% - 32px)); padding-top: 70px; }
.hero { text-align: center; min-height: 80vh; display: flex; flex-direction: column; justify-content: flex-start; }
.logo-card, .mini-logo {
  display: inline-grid;
  place-items: center;
  width: 86px;
  height: 86px;
  margin: 42px auto 20px;
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(139,92,246,.45), rgba(255,45,117,.35));
  border: 1px solid var(--line);
  box-shadow: inset 0 0 24px rgba(255,255,255,.13), 0 20px 60px rgba(139,92,246,.18);
  font-size: 43px;
}
.mini-logo { width: 42px; height: 42px; margin: 0; border-radius: 14px; font-size: 22px; }
.eyebrow { margin: 0 0 12px; color: var(--brand); font-weight: 900; letter-spacing: .08em; text-transform: uppercase; font-size: .78rem; }
h1 { margin: 0; font-size: clamp(2.15rem, 7vw, 5.1rem); line-height: .98; letter-spacing: -.07em; }
h1 span { background: linear-gradient(90deg, var(--text), #bca7ff 48%, #ff8db8); -webkit-background-clip: text; color: transparent; }
h2 { margin: 0 0 18px; text-align: center; font-size: clamp(2rem, 6vw, 3.7rem); letter-spacing: -.05em; }
h3 { margin: 0 0 10px; font-size: 1.35rem; }
.hero-copy, .section-intro { color: var(--muted); font-size: clamp(1rem, 3.8vw, 1.28rem); line-height: 1.65; max-width: 760px; margin: 18px auto 24px; }

.download-box {
  display: grid;
  gap: 13px;
  margin: 0 auto;
  max-width: 740px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.download-box[hidden] { display: none !important; }
.download-box input {
  min-height: 62px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0,0,0,.18);
  color: var(--text);
  padding: 0 18px;
  outline: none;
}
.download-box input:focus { border-color: rgba(139,92,246,.8); box-shadow: 0 0 0 4px rgba(139,92,246,.16); }
.download-box button, .wide-btn, .download-link, .final-download, .download-another {
  min-height: 62px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: white;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 16px 40px rgba(139,92,246,.25);
}
.download-box button:disabled { opacity: .65; cursor: wait; }
.hint { color: var(--muted); margin: 14px 0 0; font-size: .95rem; }

.status { max-width: 740px; margin: 24px auto 0; padding: 18px; border-radius: 18px; border: 1px solid var(--line); background: var(--panel); color: var(--muted); }
.status.ok { color: var(--green); border-color: rgba(21,212,123,.35); }
.status.err { color: #ff8aa8; border-color: rgba(255,45,117,.45); }
.results { max-width: 740px; margin: 26px auto 0; text-align: left; border: 1px solid var(--line); background: var(--panel); border-radius: 28px; padding: 18px; }
.results[hidden] { display: none !important; }
.video-head { display: flex; gap: 15px; align-items: center; margin-bottom: 16px; }
.video-head img { width: 88px; height: 88px; object-fit: cover; border-radius: 18px; border: 1px solid var(--line); }
.video-title { font-weight: 900; line-height: 1.35; }
.video-meta { color: var(--muted); margin-top: 4px; font-size: .9rem; }
.quality-heading { margin: 8px 0 15px; }
.format-list { display: grid; gap: 12px; }
.quality-grid { grid-template-columns: 1fr; }
.download-link { width: 100%; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 6px 12px; text-align: left; padding: 15px 16px; }
.download-link small { opacity: .88; font-weight: 800; grid-column: 2; }
.download-link.selected { outline: 3px solid rgba(21,212,123,.35); }
.quality-tag { display: inline-grid; place-items: center; min-width: 76px; padding: 8px 10px; border-radius: 999px; background: rgba(255,255,255,.17); font-size: .82rem; }
.quality-main { font-size: 1.05rem; }
.final-box { margin-top: 16px; }
.final-ready, .download-started { display: grid; gap: 14px; padding: 18px; border: 1px solid rgba(21,212,123,.35); border-radius: 22px; background: rgba(21,212,123,.08); }
.final-ready p, .download-started p { margin: 4px 0 0; color: var(--muted); }
.final-download, .download-another { display: flex; align-items: center; justify-content: center; text-align: center; padding: 0 18px; }
.download-another { background: rgba(80,160,255,.12); color: #5aa6ff; border: 1px solid rgba(80,160,255,.45); box-shadow: none; }

.site-ad { position: relative; max-width: 780px; margin: 34px auto 0; border-radius: 24px; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(80,160,255,.14), rgba(139,92,246,.08)); box-shadow: var(--shadow); overflow: hidden; text-align: left; }
.site-ad-toggle { position: absolute; left: 0; top: -1px; transform: translateY(-50%); width: 58px; height: 38px; border: 0; border-radius: 14px 14px 0 0; background: #fff; color: #555; font-size: 1.45rem; z-index: 2; }
.site-ad-media { min-height: 150px; display: grid; place-items: center; background: radial-gradient(circle at 30% 20%, rgba(255,255,255,.22), transparent 32%), linear-gradient(135deg, #1f6bff, #9b5cff); position: relative; }
.ad-badge { position: absolute; top: 12px; right: 12px; background: #b8e52d; color: #111; padding: 4px 8px; border-radius: 6px; font-weight: 900; }
.ad-visual { font-size: 4rem; filter: drop-shadow(0 15px 25px rgba(0,0,0,.35)); }
.site-ad-body { padding: 22px; }
.ad-kicker { color: #5aa6ff; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; font-size: .78rem; margin: 0 0 12px; }
.site-ad-body h3 { font-size: clamp(1.4rem, 5vw, 2rem); }
.site-ad-body p { color: var(--muted); line-height: 1.65; margin: 0; }
.site-ad.collapsed .site-ad-media, .site-ad.collapsed .site-ad-body { display: none; }
.site-ad.collapsed { height: 8px; margin-top: 24px; overflow: visible; }

.ad-slot, .ad-box {
  min-height: 78px;
  display: grid;
  place-items: center;
  max-width: 740px;
  margin: 28px auto 0;
  border: 1px dashed rgba(139,92,246,.45);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(139,92,246,.12), rgba(255,45,117,.08));
  color: var(--muted);
  overflow: hidden;
}
.ad-box { margin: 18px 0; min-height: 170px; }
.cards { display: grid; gap: 18px; margin-top: 34px; }
.card, details {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 28px;
  padding: 26px;
  box-shadow: 0 18px 60px rgba(0,0,0,.15);
}
.card.featured { border-color: rgba(139,92,246,.55); background: linear-gradient(135deg, rgba(139,92,246,.16), var(--panel)); }
.card-icon { display: block; font-size: 2rem; margin-bottom: 24px; }
.card p, .step p, details p, .footer p { color: var(--muted); line-height: 1.7; margin: 0; }
.steps { display: grid; gap: 18px; margin-top: 32px; }
.step { display: flex; gap: 18px; padding: 24px; border-radius: 26px; background: var(--panel); border: 1px solid var(--line); }
.step b { display: grid; place-items: center; flex: 0 0 42px; height: 42px; border-radius: 14px; background: linear-gradient(135deg, var(--brand), var(--brand-2)); }
.faq-section details { margin-top: 14px; }
summary { cursor: pointer; font-weight: 900; font-size: 1.1rem; }
details p { margin-top: 16px; }
.footer { width: min(960px, calc(100% - 32px)); margin: 60px auto 40px; padding-top: 32px; border-top: 1px solid var(--line); color: var(--muted); }
.footer-brand { display: flex; align-items: center; gap: 12px; color: var(--text); font-size: 1.55rem; }
.footer-links { display: flex; gap: 22px; margin: 28px 0; font-weight: 800; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }

.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 18px; background: rgba(0,0,0,.62); backdrop-filter: blur(8px); }
.modal-card { width: min(520px, 100%); background: #151020; color: #fff; border: 1px solid rgba(255,255,255,.14); border-radius: 30px; padding: 24px; box-shadow: var(--shadow); position: relative; }
.modal-card.compact-ad { margin-top: 0; }
.modal-close { position: absolute; top: 12px; right: 14px; width: 42px; height: 42px; border-radius: 999px; border: 0; background: rgba(255,255,255,.08); color: #fff; font-size: 26px; z-index: 3; touch-action: manipulation; }
.modal-note { color: #bdb3ce; margin: 10px 0 0; line-height: 1.55; }

@media (min-width: 760px) {
  .download-box { grid-template-columns: 1fr 190px; }
  .cards { grid-template-columns: repeat(3, 1fr); }
  .final-ready, .download-started { grid-template-columns: 1fr 220px; align-items: center; }
}
@media (max-width: 520px) {
  .nav a, .icon-btn { padding: 10px 12px; font-size: .92rem; }
  .section-pad { width: min(100% - 24px, 960px); padding-top: 26px; }
  .hero { min-height: 78vh; }
  .video-head { align-items: flex-start; }
  .video-head img { width: 72px; height: 72px; }
  .site-ad { margin-top: 28px; }
}