:root{--bg: #121009;--panel: #1b1712;--border: #332b1e;--text: #ede5d4;--muted: #9a8f76;--amber: #ffb257;--green: #7dc98f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,Microsoft YaHei,monospace;display:flex;flex-direction:column;align-items:center;gap:14px;padding:20px;min-height:100vh}a{color:var(--amber)}h1{font-size:16px;letter-spacing:.12em;color:var(--amber);margin:0;text-align:center}h1 small{color:var(--muted);letter-spacing:0;font-weight:400}.page-head{width:min(94vw,900px);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:44px;border-bottom:1px solid var(--border);margin-bottom:4px}.page-head>a{font-size:12px;text-decoration:none;color:var(--muted)}.page-head>span{justify-self:end;color:var(--muted);font-size:11px}.page-title{text-align:center;margin:6px 0}.page-title>strong{display:block;font-size:20px;margin-bottom:4px}.hint{color:var(--muted);font-size:13px;text-align:center;max-width:680px}.page-help{padding-bottom:20px}button{font:inherit;color:var(--bg);background:var(--amber);border:0;border-radius:7px;padding:13px 32px;font-size:17px;font-weight:700;cursor:pointer}button:hover{background:#ffc370}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--amber);outline-offset:3px}.stage{background:#fff;padding:18px;border-radius:9px;box-shadow:0 14px 42px #00000047}.stage canvas{display:block;image-rendering:pixelated}.preview{position:relative;width:min(92vw,520px)}.preview video{width:100%;border-radius:9px;background:#000;display:block}.receive-progress{width:min(92vw,520px);margin-bottom:-8px;text-align:center}.receive-progress b{color:var(--amber);font-size:24px;font-variant-numeric:tabular-nums}.done{color:var(--green);font-size:22px;font-weight:700;text-align:center;margin:10px 0}img.received{display:block;max-width:min(92vw,640px);border-radius:9px}details.settings{width:min(92vw,680px);background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:9px 13px}details.settings summary{cursor:pointer;color:var(--muted);font-size:12px;letter-spacing:.08em}details.settings .row{display:flex;flex-wrap:wrap;gap:12px 18px;padding-top:12px}details.settings label{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:11px}details.settings select,details.settings input[type=range]{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:6px 8px}.settings-help{text-align:left;padding-top:10px}.time-estimate{width:min(92vw,680px);padding:9px 12px;color:var(--amber);background:var(--panel);border:1px solid var(--border);border-radius:7px;text-align:center;font-size:12px}.file-picker{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;color:var(--bg);background:var(--amber);border-radius:7px;font-weight:700;cursor:pointer;overflow:hidden}.file-picker:hover{background:#ffc370}.file-picker input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.receive-actions,.sender-actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}.secondary-picker{color:var(--text);background:var(--panel);border:1px solid var(--border);font-size:14px}.secondary-picker:hover{background:#251f16}.secondary-button{min-height:46px;padding:0 22px;color:var(--text);background:var(--panel);border:1px solid var(--border);font-size:14px}.secondary-button:hover{color:var(--amber);background:#251f16}.result-card{width:min(92vw,520px);margin:12px auto;padding:18px;text-align:center;background:var(--panel);border:1px solid var(--border);border-radius:8px}.result-card .done{margin:0 0 6px}.result-card .error{color:#ef7474}.result-name{margin-bottom:14px;color:var(--muted);overflow-wrap:anywhere}.download-button{display:inline-block;padding:10px 22px;color:var(--bg);background:var(--amber);border-radius:6px;text-decoration:none;font-weight:700}.install-button{justify-self:end;padding:6px 11px;color:var(--amber);background:transparent;border:1px solid var(--border);border-radius:6px;font-size:11px;font-weight:600}.install-button:hover{color:var(--bg);background:var(--amber)}.project-note{width:min(92vw,680px);margin-top:auto;padding:22px 0 4px;border-top:1px solid var(--border);color:var(--muted)}.project-note p{margin:0;font-size:11px;line-height:1.8}.project-note a{color:var(--amber)}.app-dialog{width:min(calc(100% - 32px),430px);padding:22px;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:9px}.app-dialog::backdrop{background:#000000b8}.app-dialog h2{margin:0 0 10px;color:var(--text);font-size:17px}.app-dialog.warning h2{color:var(--amber)}.app-dialog.error h2{color:#ef7474}.app-dialog p{margin:0 0 20px;color:var(--muted);line-height:1.75;white-space:pre-line}.app-dialog button{display:block;margin-left:auto;padding:8px 16px;font-size:13px}.metrics{display:grid;grid-template-columns:repeat(auto-fill,minmax(115px,1fr));gap:8px;width:min(92vw,680px)}.metric{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:7px 9px}.metric .k{font-size:10px;color:var(--muted);letter-spacing:.05em}.metric .v{font-size:16px;font-variant-numeric:tabular-nums}.metric .v.amber{color:var(--amber)}.metric .v.ok{color:var(--green)}body.home{padding:0 20px;justify-content:center}.home-shell{width:min(100%,820px);padding:56px 0}.brand-mark{color:var(--amber);font-weight:800;letter-spacing:.16em;font-size:13px}.home-top{display:flex;align-items:center;justify-content:space-between}.home-title{color:var(--text);text-align:left;margin:22px 0 16px;font:700 clamp(34px,7vw,56px)/1.15 Arial,"Microsoft YaHei",sans-serif;letter-spacing:-.04em}.home-intro{color:var(--muted);max-width:650px;line-height:1.8;margin:0 0 38px}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice-card{min-height:230px;display:flex;flex-direction:column;align-items:flex-start;padding:26px;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:9px;text-decoration:none}.choice-card:hover{border-color:var(--amber)}.choice-number{color:var(--amber);font-size:11px}.choice-card strong{font-size:22px;margin-top:36px}.choice-card small{color:var(--muted);margin-top:7px;line-height:1.7}.choice-card b{color:var(--amber);font-size:12px;margin-top:auto}.privacy-note{color:var(--muted);font-size:11px;margin:20px 0 0}.home-instructions{width:100%;margin-top:48px}@media(max-width:620px){body{padding:12px}.page-head{width:96vw;grid-template-columns:55px 1fr 55px}.page-head h1 small{display:none}.choice-grid{grid-template-columns:1fr}.choice-card{min-height:200px}details.settings .row{display:grid;grid-template-columns:1fr 1fr}}