:root{--ink:#202624;--muted:#66716b;--border:#dfe5e1;--green:#12684e;--pale:#e7f3ec;--surface:#f5f7f5;--amber:#9c6320;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--surface);font-synthesis:none;letter-spacing:0}
*{box-sizing:border-box}
body{margin:0;font-size:15px;line-height:1.6}
[hidden]{display:none!important}
button,a{-webkit-tap-highlight-color:transparent}
button{font:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
button:disabled{opacity:.5;cursor:wait}
:focus-visible{outline:3px solid #3c9576;outline-offset:4px}
.topbar{background:#fff;border-bottom:1px solid var(--border)}
.topbar-inner{max-width:1000px;margin:auto;padding:18px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;gap:12px;align-items:center;font-weight:650;font-size:16px}
.brand-icon{width:36px;height:36px;border-radius:8px;display:grid;place-items:center;background:var(--ink)}
.brand-icon img,.download-button img{filter:brightness(0) invert(1)}
.platform{font-size:11px;font-weight:700;color:var(--muted)}
main{max-width:1000px;margin:auto;padding:40px 32px 24px}
.heading-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:32px}
.eyebrow{font-size:12px;color:var(--muted);margin:0 0 4px}
h1{font-size:28px;line-height:1.4;overflow-wrap:anywhere;margin:0;font-weight:650}
.tools{display:flex;gap:8px;flex-shrink:0}
.icon-button{display:grid;place-items:center;border:1px solid var(--border);background:#fff;border-radius:6px;width:44px;height:44px}
.icon-button:hover{border-color:#9dab9f;background:#edf1ed}
.latest{display:grid;grid-template-columns:minmax(0,1fr);border-top:2px solid var(--ink);border-bottom:1px solid var(--border);padding:28px 0 36px;min-height:292px}
.section-label{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}
h2{font-size:16px;line-height:1.5;font-weight:650;margin:0}
.status{font-size:12px;color:var(--amber);white-space:nowrap}
.status.ready{color:var(--green)}
.version-row{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px}
.version-row strong{font-size:26px;font-weight:650;overflow-wrap:anywhere;min-width:0}
.build{font-size:13px;font-family:ui-monospace,monospace;color:var(--muted);overflow-wrap:anywhere}
.metadata{display:flex;gap:32px;flex-wrap:wrap;margin:22px 0 26px}
.metadata div{min-width:0}
dt{font-size:12px;color:var(--muted);margin-bottom:4px}
dd{margin:0;font-size:14px;overflow-wrap:anywhere}
.download-button{min-height:48px;padding:12px 24px;background:var(--green);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;border-radius:6px;max-width:100%}
.download-button:hover{background:#0c513c}
.device-notice{font-size:13px;color:var(--amber);margin:12px 0 0}
.notes-section{border-left:1px solid var(--border);padding-left:32px}
h3{font-size:14px;font-weight:650;margin:0 0 12px}
.notes{font-size:14px;line-height:1.85;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}
.checksum{font-size:12px;color:var(--muted);margin-top:28px}
.checksum summary{cursor:pointer;min-height:32px}
.checksum p{margin:8px 0 4px}
.checksum code{display:block;font-size:11px;overflow-wrap:anywhere}
.empty-state{padding:12px 0 4px}
.empty-state img{opacity:.45;margin-bottom:12px}
.empty-state h3{font-size:20px;margin-bottom:6px}
.empty-state p{color:var(--muted);font-size:14px;margin:0}
.secondary-button{margin-top:16px;border:1px solid var(--border);border-radius:6px;min-height:44px;padding:8px 18px;background:#fff}
.history{padding-top:28px}
.muted{color:var(--muted);font-size:12px}
.history-empty{margin:0;padding:20px 0 40px;color:var(--muted);font-size:14px}
.history-list{display:grid}
.history-item{border-top:1px solid var(--border);padding:18px 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;align-items:center;gap:20px}
.history-version{font-size:15px;font-weight:600;overflow-wrap:anywhere}
.history-meta{font-size:12px;color:var(--muted);overflow-wrap:anywhere}
.history-item .icon-button{background:transparent}
.history-notes{grid-column:1/-1;margin:0;font-size:13px;color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere}
footer{border-top:1px solid var(--border);margin-top:20px;padding-top:20px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);border-radius:6px;background:var(--ink);color:#fff;padding:10px 18px;font-size:14px;box-shadow:0 4px 20px #0002;text-align:center;z-index:10}
@media(max-width:640px){.topbar-inner{padding:14px 20px}main{padding:28px 20px 20px}.heading-row{margin-bottom:24px;align-items:flex-start}h1{font-size:23px}.tools{gap:6px}.latest{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:22px;min-height:270px}.notes-section{border-left:0;border-top:1px solid var(--border);padding:24px 0 0}.download-button{width:100%}.metadata{gap:24px}.history-item{gap:12px;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px}.section-label{margin-bottom:20px}.version-row strong{font-size:24px}}