:root {
  color-scheme: dark;
  --bg: #07120f;
  --panel: #0e201a;
  --line: #27483d;
  --text: #f3f7f5;
  --muted: #abc0b7;
  --lime: #c8ff68;
  --cyan: #72e8c5;
  --danger: #ff8d8d;
}

* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 72% 8%, #17382d 0, transparent 36%), var(--bg); color: var(--text); font-family: "Microsoft YaHei UI", "Segoe UI", sans-serif; }
main { width: min(1080px, calc(100% - 32px)); margin: auto; padding: 54px 0 64px; }
.tag { display: inline-flex; padding: 7px 12px; border: 1px solid #3f6658; border-radius: 999px; color: var(--cyan); font-size: 13px; letter-spacing: .08em; }
h1 { max-width: 880px; margin: 24px 0 20px; font-size: clamp(42px, 7vw, 76px); line-height: 1.03; letter-spacing: -.045em; }
.lead { max-width: 800px; margin: 0 0 34px; color: var(--muted); font-size: 19px; line-height: 1.8; }
.download-card, .details, .card { border: 1px solid var(--line); background: linear-gradient(145deg, rgba(19, 42, 34, .94), rgba(9, 23, 18, .97)); }
.download-card { padding: 28px; border-radius: 22px; }
.eyebrow { margin: 0 0 7px; color: var(--cyan); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
h2 { margin: 0 0 10px; font-size: 24px; }
.muted, .card p, .details li { color: var(--muted); line-height: 1.72; }
.muted { max-width: 790px; margin: 0; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 20px; }
.primary, .secondary { min-height: 50px; padding: 0 20px; border-radius: 13px; border: 0; display: inline-flex; align-items: center; justify-content: center; font: inherit; font-weight: 800; text-decoration: none; cursor: pointer; }
.primary { background: var(--lime); color: #13200f; }
.primary:disabled { cursor: wait; opacity: .55; }
.secondary { border: 1px solid var(--line); background: #10221c; color: var(--text); }
.primary:focus-visible, .secondary:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.progress-shell { margin-top: 5px; }
.progress-track { height: 10px; overflow: hidden; border-radius: 999px; background: #06100d; }
.progress-bar { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--cyan), var(--lime)); transition: width .2s ease; }
.status { min-height: 24px; margin: 10px 0 0; color: var(--muted); }
.status.error { color: var(--danger); }
.status.success { color: var(--lime); }
.hash { margin-top: 16px; padding: 14px 16px; border-radius: 12px; background: #06100d; color: #9dc4b5; font: 12px/1.65 Consolas, monospace; overflow-wrap: anywhere; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 18px; }
.card { padding: 23px; border-radius: 20px; }
.card b { display: block; margin-bottom: 9px; font-size: 18px; }
.card p { margin: 0; }
.details { margin-top: 18px; padding: 26px; border-radius: 20px; }
.details ul { margin: 0; padding-left: 20px; }
footer { margin-top: 30px; color: #78968a; font-size: 13px; line-height: 1.7; }
@media (max-width: 760px) { main { padding-top: 34px; } h1 { font-size: 43px; } .lead { font-size: 17px; } .grid { grid-template-columns: 1fr; } .download-card { padding: 22px; } .primary, .secondary { width: 100%; } }