:root{--bg: #f6f7f9;--surface: #ffffff;--surface-muted: #f2f4f7;--border: #e4e7ec;--border-strong: #d0d5dd;--text: #101828;--text-muted: #667085;--text-subtle: #98a2b3;--accent: #3b5bdb;--accent-hover: #2f4bc4;--accent-soft: #eef2ff;--success: #12805c;--success-soft: #e6f6ef;--warning: #b54708;--warning-soft: #fef4e6;--danger: #b42318;--danger-soft: #fdeceb;--radius-sm: 8px;--radius: 12px;--radius-lg: 18px;--radius-full: 999px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .04);--shadow: 0 4px 16px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .04);--gap: 16px;--gap-lg: 24px;--gap-xl: 40px;--header-h: 60px}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--accent);color:#fff;font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;transition:background .15s ease,box-shadow .15s ease;white-space:nowrap}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:active:not(:disabled){transform:translateY(.5px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--text-muted);border-color:var(--border)}.btn-ghost:hover:not(:disabled){background:var(--surface-muted);color:var(--text)}.btn-subtle{background:var(--surface-muted);color:var(--text);border-color:transparent}.btn-subtle:hover:not(:disabled){background:var(--border)}.btn-danger-ghost{background:transparent;color:var(--danger);border-color:transparent}.btn-danger-ghost:hover:not(:disabled){background:var(--danger-soft)}.btn-sm{padding:6px 12px;font-size:13px}.btn-block{width:100%}.field{display:block;margin-bottom:var(--gap)}.field-label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--text-muted)}.input{width:100%;padding:11px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:15px;font-family:inherit;transition:border-color .15s ease,box-shadow .15s ease}.input::placeholder{color:var(--text-subtle)}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.app-header{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;padding:0 var(--gap-lg);background:var(--surface);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;letter-spacing:-.01em}.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#5c7cfa);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700}.header-actions{display:flex;align-items:center;gap:10px}.view{display:none;min-height:calc(100vh - var(--header-h))}.view.is-active{display:block}.view-centered{padding:var(--gap-xl) var(--gap-lg)}.container-narrow{max-width:420px;margin:0 auto}.container-wide{max-width:760px;margin:0 auto}.page-head{margin-bottom:var(--gap-lg);text-align:center}.page-title{margin:0 0 6px;font-size:24px;font-weight:600;letter-spacing:-.02em}.page-sub{margin:0;color:var(--text-muted);font-size:14px}.panel{padding:var(--gap-lg)}.tabs{display:flex;gap:4px;padding:4px;margin-bottom:var(--gap-lg);background:var(--surface-muted);border-radius:var(--radius-sm)}.tab{flex:1;padding:8px 12px;border:none;border-radius:6px;background:transparent;color:var(--text-muted);font-size:14px;font-family:inherit;cursor:pointer;transition:background .15s ease,color .15s ease}.tab.is-active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm);font-weight:500}.device-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.device-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:border-color .15s ease,box-shadow .15s ease}.device-item:hover{border-color:var(--border-strong);box-shadow:var(--shadow-sm)}.device-dot{width:8px;height:8px;border-radius:var(--radius-full);background:var(--text-subtle);flex-shrink:0}.device-dot.online{background:#12b76a;box-shadow:0 0 0 3px var(--success-soft)}.device-dot.zombie{background:#f79009;box-shadow:0 0 0 3px var(--warning-soft)}.device-info{flex:1;min-width:0}.device-name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.device-meta{font-size:13px;color:var(--text-muted)}.empty-state{padding:var(--gap-xl) var(--gap-lg);text-align:center;color:var(--text-muted)}.empty-state .emoji{font-size:28px;display:block;margin-bottom:10px;opacity:.5}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);max-width:min(92vw,460px);padding:12px 18px;border-radius:var(--radius);background:#101828;color:#fff;font-size:14px;box-shadow:0 8px 24px #1018282e;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:200}.toast.is-visible{opacity:1;transform:translate(-50%)}.toast.is-error{background:var(--danger)}.toast.is-success{background:var(--success)}.remote{display:flex;flex-direction:column;height:calc(100vh - var(--header-h));padding:var(--gap);gap:var(--gap)}.remote-stage{flex:1;position:relative;display:grid;place-items:center;min-height:0;background:#0d1117;border-radius:var(--radius-lg);overflow:hidden}#screen{max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain;background:#0d1117;display:block}#screen.is-cover{object-fit:cover}.remote-stage.is-waiting #screen{opacity:0}.stage-placeholder{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#8b949e;text-align:center;padding:var(--gap-lg)}.remote-stage.is-waiting .stage-placeholder{display:flex}.spinner{width:26px;height:26px;border:2.5px solid rgba(255,255,255,.15);border-top-color:#58a6ff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.stage-placeholder .stage-title{font-size:15px;color:#c9d1d9}.stage-placeholder .stage-hint{font-size:13px;max-width:320px;line-height:1.5}.remote-bar{display:flex;align-items:center;justify-content:space-between;gap:var(--gap);padding:10px 14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-wrap:wrap}.session-status{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);min-width:0}.session-status .device-dot{background:#12b76a}.session-status .device-dot.offline{background:var(--text-subtle);box-shadow:none}.session-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.dock{position:fixed;right:20px;bottom:20px;width:min(92vw,340px);padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);z-index:60}.dock[hidden]{display:none}.dock-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:13px;font-weight:500;color:var(--text-muted);cursor:move;user-select:none}.dock-row{display:flex;gap:8px}.file-panel{position:fixed;top:calc(var(--header-h) + 16px);right:20px;bottom:20px;width:min(92vw,380px);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);z-index:60;overflow:hidden}.file-panel[hidden]{display:none}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border);font-size:14px;font-weight:500}.file-list{list-style:none;margin:0;padding:6px;overflow-y:auto;flex:1}.file-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px}.file-list li:hover{background:var(--surface-muted)}.file-list .size{color:var(--text-subtle);font-size:12px;flex-shrink:0}.file-foot{padding:12px 14px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:8px}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}@media (max-width: 640px){:root{--gap-lg: 16px;--gap-xl: 24px}.app-header{padding:0 16px}.page-title{font-size:20px}.panel{padding:var(--gap-lg) 18px}.remote{padding:10px}.remote-bar{flex-direction:column;align-items:stretch}.session-actions{justify-content:space-between}.session-actions .btn{flex:1;justify-content:center}.dock,.file-panel{left:12px;right:12px;width:auto}}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}