:root{--color-brand-1:#52D681;--color-brand-2:#FF9843;--color-primary:#43C26B;--color-primary-strong:#FF8A3D;--color-accent-amber:#FFC24C;--color-bg-canvas:#F7FBF7;--color-surface:#FFFFFF;--color-text:#2B3A42;--color-text-muted:#81939B;--color-border:#EEF5EF;--radius-s:12px;--radius-m:16px;--radius-l:24px;--radius-pill:9999px;--elevation-1:0 12px 24px rgba(32,94,112,.10),0 2px 6px rgba(32,94,112,.06);--elevation-2:0 16px 32px rgba(32,94,112,.14);--bg:var(--color-bg-canvas);--fg:var(--color-text);--muted:var(--color-text-muted);--accent:var(--color-primary);--card:var(--color-surface);--gradient-brand:linear-gradient(135deg,var(--color-brand-1),var(--color-brand-2))}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(rgba(0,0,0,var(--bg-dim,0)),rgba(0,0,0,var(--bg-dim,0))),var(--bg);color:var(--fg);font-family:"HarmonyOS Sans","Source Han Sans SC","微软雅黑",system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}
.container{max-width:720px;margin:40px auto;padding:0 16px}
h1{font-size:24px;margin:8px 0 16px;font-weight:700;letter-spacing:.2px;text-align:center}
form{display:flex;gap:8px;margin-bottom:16px}
input[type=email]{flex:1;padding:10px 12px;border:1px solid var(--color-border);border-radius:20px;background:#fff;color:var(--fg);box-shadow:var(--elevation-1)}
input[type=email]::placeholder{color:var(--muted)}
input[type=email]:focus-visible{outline:2px solid var(--color-primary-strong);outline-offset:2px}
button{padding:10px 14px;border-radius:9999px;border:1px solid transparent;background:var(--color-primary);background-image:var(--gradient-brand);color:#fff;cursor:pointer;box-shadow:var(--elevation-1);transition:transform .22s ease,box-shadow .22s ease,filter .22s ease}
button:hover{filter:brightness(1.02);transform:translateY(-2px);box-shadow:var(--elevation-2)}
button:active{transform:translateY(-1px);filter:brightness(.98);box-shadow:var(--elevation-1)}
button:focus-visible{outline:2px solid var(--color-primary-strong);outline-offset:2px}
.card{background:var(--card);border:1px solid var(--color-border);border-radius:24px;padding:14px;box-shadow:var(--elevation-1)}
.card-header{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px}
.badge{display:flex;gap:8px;align-items:center;background-image:var(--gradient-brand);color:#fff;border:1px solid transparent;border-radius:999px;padding:6px 10px;box-shadow:var(--elevation-1);transition:transform .22s ease,box-shadow .22s ease}
.badge:hover{transform:translateY(-2px);box-shadow:var(--elevation-2)}
.badge:active{transform:translateY(-1px);box-shadow:var(--elevation-1)}
.badge span{font-weight:700;color:#fff}
.badge #code-text{cursor:pointer}
.badge button{padding:6px 10px;border-radius:9999px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.15);color:#fff;box-shadow:none}
.badge #code-text-top{cursor:pointer}
.badge #code-text-bottom{cursor:pointer}
.badge button:hover{background:rgba(255,255,255,.25)}
.badge button:focus-visible{outline:2px solid rgba(255,255,255,.8);outline-offset:2px}
.snippet{white-space:pre-wrap;background:#F7FBF7;border-radius:16px;padding:12px;border:1px solid var(--color-border);color:var(--fg)}
.html-view{margin-top:12px;border:1px solid var(--color-border);border-radius:16px;overflow:hidden}
.html-view iframe{display:block;width:100%;height:360px;border:0;background:#fff}
.viewer-controls{display:flex;gap:8px;margin-top:8px;align-items:center}
.viewer-controls .spacer{flex:1}
.meta{color:var(--muted);font-size:12px;margin-bottom:8px}
.message{color:var(--muted);margin-top:8px}
.toast{position:fixed;top:16px;right:16px;z-index:50}
.toast:not(:empty){display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:9999px;border:1px solid transparent;background:var(--color-primary);background-image:var(--gradient-brand);color:#fff;box-shadow:var(--elevation-1)}
.hidden{display:none !important}
.loading{display:none}
.spinner{display:none}
.dot-loader{display:inline-flex;gap:8px;align-items:center;justify-content:center;width:100%;padding:8px 0}
.dot-loader span{width:8px;height:8px;border-radius:50%;background:var(--color-primary);background-image:var(--gradient-brand)}
.dot-loader span:nth-child(1){animation:dot-bounce .9s ease-in-out infinite}
.dot-loader span:nth-child(2){animation:dot-bounce .9s ease-in-out .15s infinite}
.dot-loader span:nth-child(3){animation:dot-bounce .9s ease-in-out .3s infinite}
.loading-card{display:flex;justify-content:center;align-items:center;min-height:80px}
.empty{display:flex;align-items:center;justify-content:center;min-height:64px;color:var(--muted)}
.brightness-panel{display:flex;gap:8px;align-items:center;margin:8px 0 16px;background:var(--card);border:1px solid var(--color-border);border-radius:16px;padding:8px 12px;box-shadow:var(--elevation-1)}
.brightness-panel input[type=range]{flex:1;width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:9999px;background:var(--color-border);outline:none}
.brightness-panel input[type=range]:focus-visible{outline:2px solid var(--color-primary-strong);outline-offset:2px}
/* WebKit */
.brightness-panel input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:9999px;background:var(--color-border)}
.brightness-panel input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;border:2px solid #fff;background-image:var(--gradient-brand);margin-top:-5px;box-shadow:var(--elevation-1)}
/* Firefox */
.brightness-panel input[type=range]::-moz-range-track{height:6px;border-radius:9999px;background:var(--color-border)}
.brightness-panel input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;border:2px solid #fff;background-image:var(--gradient-brand);box-shadow:var(--elevation-1)}
.brightness-panel .meta{margin:0;min-width:44px;text-align:right;color:var(--muted)}
.brightness-fab{display:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes dot-bounce{0%,80%,100%{transform:translateY(0);opacity:.6}40%{transform:translateY(-6px);opacity:1}}

@media (max-width:720px){
.brightness-fab{left:12px;right:auto;top:auto;bottom:16px}
.brightness-fab input[type=range]{height:120px}
}