[data-tool-root="coin-flip"]{--cf-bg:#fff;--cf-workspace:#f2f2f2;--cf-surface:#fff;--cf-text:#111;--cf-secondary:#444;--cf-muted:#666;--cf-border:#ddd;--cf-strong:#222;--cf-hover:#eee;--cf-danger:#a12424;--cf-success:#276749;--cf-radius:6px;box-sizing:border-box;width:100%;padding:0 360px 48px 30px;color:var(--cf-text);background:var(--cf-bg);font-family:"Noto Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6}
[data-tool-root="coin-flip"] *,[data-tool-root="coin-flip"] *::before,[data-tool-root="coin-flip"] *::after{box-sizing:border-box}
[data-tool-root="coin-flip"] [hidden]{display:none!important}
[data-tool-root="coin-flip"] .tool-page-header{padding:24px 0 16px;border-bottom:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] .tool-page-header h1{margin:0;font-size:30px;font-weight:800;line-height:1.2;letter-spacing:-.5px}
[data-tool-root="coin-flip"] .page-description{max-width:72ch;margin:4px 0 0;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-workspace{margin-top:24px}
[data-tool-root="coin-flip"] .cf-workspace-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:16px;align-items:stretch}
[data-tool-root="coin-flip"] .cf-panel{display:flex;min-width:0;flex-direction:column;padding:16px 24px;background:var(--cf-workspace);border:1px solid var(--cf-border);border-radius:var(--cf-radius)}
[data-tool-root="coin-flip"] .cf-form{display:flex;flex:1;flex-direction:column;gap:16px}
[data-tool-root="coin-flip"] .cf-field{display:grid;gap:4px}
[data-tool-root="coin-flip"] .cf-label,[data-tool-root="coin-flip"] .cf-manual-copy label{font-size:13px;font-weight:700;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-number,[data-tool-root="coin-flip"] .cf-manual-copy textarea{width:100%;border:1px solid var(--cf-border);border-radius:4px;background:#fff;color:var(--cf-text);font:inherit;font-variant-numeric:tabular-nums}
[data-tool-root="coin-flip"] .cf-number{min-height:44px;padding:9px 12px;font-size:16px}
[data-tool-root="coin-flip"] .cf-manual-copy textarea{padding:10px 12px;resize:vertical}
[data-tool-root="coin-flip"] .cf-number:focus,[data-tool-root="coin-flip"] .cf-btn:focus-visible,[data-tool-root="coin-flip"] .cf-chip:focus-visible,[data-tool-root="coin-flip"] summary:focus-visible,[data-tool-root="coin-flip"] .cf-check input:focus-visible+span{outline:3px solid rgba(17,17,17,.25);outline-offset:2px}
[data-tool-root="coin-flip"] .cf-help,[data-tool-root="coin-flip"] .cf-error{margin:0;font-size:13px;line-height:1.5}
[data-tool-root="coin-flip"] .cf-help{color:var(--cf-muted)}
[data-tool-root="coin-flip"] .cf-error{color:var(--cf-danger);font-weight:700}
[data-tool-root="coin-flip"] .cf-options{display:grid;gap:10px;padding:12px;background:#fff;border:1px solid var(--cf-border);border-radius:4px}
[data-tool-root="coin-flip"] .cf-check-wrap{display:grid;gap:2px}
[data-tool-root="coin-flip"] .cf-check{display:flex;align-items:flex-start;gap:9px;min-height:40px;padding:8px 0;font-weight:700;cursor:pointer}
[data-tool-root="coin-flip"] .cf-check input{width:18px;height:18px;margin:3px 0 0;accent-color:#111}
[data-tool-root="coin-flip"] .cf-check-wrap .cf-help{padding-left:27px}
[data-tool-root="coin-flip"] .cf-actions,[data-tool-root="coin-flip"] .cf-result-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}
[data-tool-root="coin-flip"] .cf-btn,[data-tool-root="coin-flip"] .cf-chip{min-height:44px;border:1px solid var(--cf-strong);border-radius:4px;background:#fff;color:var(--cf-text);font:inherit;font-weight:700;cursor:pointer}
[data-tool-root="coin-flip"] .cf-btn:hover,[data-tool-root="coin-flip"] .cf-chip:hover{background:var(--cf-hover)}
[data-tool-root="coin-flip"] .cf-btn-primary{background:#111;color:#fff}
[data-tool-root="coin-flip"] .cf-btn-primary:hover{background:#222}
[data-tool-root="coin-flip"] .cf-btn:disabled{cursor:not-allowed;border-color:var(--cf-border);background:#eee;color:#999}
[data-tool-root="coin-flip"] .cf-quick{margin:0;padding:0;border:0}
[data-tool-root="coin-flip"] .cf-quick legend{margin-bottom:6px;color:var(--cf-secondary);font-size:13px;font-weight:700}
[data-tool-root="coin-flip"] .cf-quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
[data-tool-root="coin-flip"] .cf-chip{min-height:40px;border-color:var(--cf-border);font-size:13px}
[data-tool-root="coin-flip"] .cf-form-status{margin-top:auto;padding:10px 12px;border-left:3px solid var(--cf-strong);background:#fff;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-result-surface{display:flex;flex:1;min-width:0;flex-direction:column;gap:14px;padding:18px;background:var(--cf-surface);border:1px solid var(--cf-border);border-radius:4px}
[data-tool-root="coin-flip"] .cf-result-header{display:flex;align-items:center;justify-content:space-between;gap:12px}
[data-tool-root="coin-flip"] .cf-result-title{font-size:13px;font-weight:700;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-result-badge{display:inline-flex;align-items:center;min-height:28px;padding:3px 9px;border:1px solid var(--cf-border);border-radius:999px;background:#f7f7f7;font-size:12px;font-weight:700;white-space:nowrap}
[data-tool-root="coin-flip"] .cf-result-badge[data-state="success"]{border-color:#9bc2aa;color:var(--cf-success)}
[data-tool-root="coin-flip"] .cf-result-badge[data-state="error"]{border-color:#dcb1b1;color:var(--cf-danger)}
[data-tool-root="coin-flip"] .cf-primary-area{display:grid;grid-template-columns:116px minmax(0,1fr);align-items:center;gap:20px;padding:14px 0;border-top:1px solid var(--cf-border);border-bottom:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] .cf-coin-stage{display:grid;place-items:center;min-height:116px;perspective:700px}
[data-tool-root="coin-flip"] .cf-coin{position:relative;width:104px;height:104px;transform-style:preserve-3d;transition:transform .35s ease}
[data-tool-root="coin-flip"] .cf-coin-face{position:absolute;inset:0;display:grid;place-items:center;border:3px solid #222;border-radius:50%;backface-visibility:hidden;background:#fff;font-size:42px;font-weight:800;box-shadow:inset 0 0 0 6px #eee}
[data-tool-root="coin-flip"] .cf-coin-tails{transform:rotateY(180deg);background:#eee}
[data-tool-root="coin-flip"] .cf-coin.is-heads{transform:rotateY(0)}
[data-tool-root="coin-flip"] .cf-coin.is-tails{transform:rotateY(180deg)}
[data-tool-root="coin-flip"] .cf-coin.is-flipping{animation:cf-flip .5s ease-in-out}
@keyframes cf-flip{0%{transform:rotateY(0) translateY(0)}45%{transform:rotateY(540deg) translateY(-12px)}100%{transform:rotateY(1080deg) translateY(0)}}
[data-tool-root="coin-flip"] .cf-primary-copy{min-width:0}
[data-tool-root="coin-flip"] .cf-result-primary{display:block;overflow-wrap:anywhere;font-size:clamp(30px,4.8vw,50px);font-weight:800;line-height:1.15;letter-spacing:-1px}
[data-tool-root="coin-flip"] .cf-latest-note{display:block;min-height:24px;margin-top:4px;color:var(--cf-muted)}
[data-tool-root="coin-flip"] .cf-data-band,[data-tool-root="coin-flip"] .cf-round-grid{display:grid;margin:0;border:1px solid var(--cf-border);border-radius:4px;overflow:hidden}
[data-tool-root="coin-flip"] .cf-data-band{grid-template-columns:repeat(3,minmax(0,1fr))}
[data-tool-root="coin-flip"] .cf-data-band>div,[data-tool-root="coin-flip"] .cf-round-grid>div{min-width:0;padding:10px 12px;background:#f7f7f7}
[data-tool-root="coin-flip"] .cf-data-band>div+div,[data-tool-root="coin-flip"] .cf-round-grid>div+div{border-left:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] dt{font-size:12px;color:var(--cf-muted)}
[data-tool-root="coin-flip"] dd{margin:2px 0 0;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
[data-tool-root="coin-flip"] .cf-round-summary,[data-tool-root="coin-flip"] .cf-history{padding-top:2px}
[data-tool-root="coin-flip"] .cf-round-summary h3,[data-tool-root="coin-flip"] .cf-history h3{margin:0 0 8px;font-size:16px}
[data-tool-root="coin-flip"] .cf-round-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
[data-tool-root="coin-flip"] .cf-round-grid dd{font-size:18px}
[data-tool-root="coin-flip"] .cf-sequence-wrap{margin-top:10px}
[data-tool-root="coin-flip"] .cf-sequence-label{display:block;margin-bottom:6px;font-size:13px;font-weight:700;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-sequence{display:flex;flex-wrap:wrap;gap:5px;max-height:110px;overflow:auto;padding:8px;border:1px solid var(--cf-border);border-radius:4px;background:#fbfbfb}
[data-tool-root="coin-flip"] .cf-sequence-item{display:inline-flex;align-items:center;justify-content:center;min-width:38px;min-height:30px;padding:3px 7px;border:1px solid var(--cf-border);border-radius:999px;background:#fff;font-size:12px;font-weight:700}
[data-tool-root="coin-flip"] .cf-sequence-tails{background:#eee}
[data-tool-root="coin-flip"] .cf-sequence-more{margin:5px 0 0;color:var(--cf-muted);font-size:13px}
[data-tool-root="coin-flip"] .cf-history-list{max-height:180px;margin:0;padding:0;overflow:auto;list-style:none;border:1px solid var(--cf-border);border-radius:4px}
[data-tool-root="coin-flip"] .cf-history-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;padding:9px 10px}
[data-tool-root="coin-flip"] .cf-history-item+li{border-top:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] .cf-history-item strong{white-space:nowrap}
[data-tool-root="coin-flip"] .cf-history-item span{min-width:0;overflow-wrap:anywhere;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-empty{color:var(--cf-muted)}
[data-tool-root="coin-flip"] .cf-history-list>.cf-empty{display:block;padding:10px}
[data-tool-root="coin-flip"] .cf-result-note{margin:0;color:var(--cf-muted);font-size:13px}
[data-tool-root="coin-flip"] .cf-manual-copy{display:grid;gap:6px;padding-top:4px}
[data-tool-root="coin-flip"] .cf-insights,[data-tool-root="coin-flip"] .cf-more,[data-tool-root="coin-flip"] .cf-related{margin-top:32px}
[data-tool-root="coin-flip"] h2{margin:0 0 14px;padding-left:12px;border-left:3px solid #111;font-size:24px;line-height:1.3}
[data-tool-root="coin-flip"] .cf-insights-card{padding:18px 20px;border:1px solid var(--cf-border);border-radius:var(--cf-radius);background:#f7f7f7}
[data-tool-root="coin-flip"] .cf-ratio-bar{display:flex;width:100%;height:26px;overflow:hidden;border:1px solid var(--cf-strong);border-radius:4px;background:#fff}
[data-tool-root="coin-flip"] .cf-ratio-heads{background:#fff;transition:width .25s ease}
[data-tool-root="coin-flip"] .cf-ratio-tails{background:#333;transition:width .25s ease}
[data-tool-root="coin-flip"] .cf-ratio-legend{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;margin-top:10px}
[data-tool-root="coin-flip"] .cf-ratio-legend span{display:flex;align-items:center;gap:7px;color:var(--cf-secondary)}
[data-tool-root="coin-flip"] .cf-key{display:inline-block;width:14px;height:14px;border:1px solid #222;border-radius:2px}
[data-tool-root="coin-flip"] .cf-key-heads{background:#fff}
[data-tool-root="coin-flip"] .cf-key-tails{background:#333}
[data-tool-root="coin-flip"] .cf-insights-text{margin:12px 0 0}
[data-tool-root="coin-flip"] .cf-accordion-group{display:grid;gap:8px}
[data-tool-root="coin-flip"] .cf-acc{border:1px solid var(--cf-border);border-radius:4px;background:#fff}
[data-tool-root="coin-flip"] .cf-acc summary{position:relative;min-height:48px;padding:12px 44px 12px 14px;font-weight:700;cursor:pointer;list-style:none}
[data-tool-root="coin-flip"] .cf-acc summary::-webkit-details-marker{display:none}
[data-tool-root="coin-flip"] .cf-acc summary::after{content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:22px;line-height:1}
[data-tool-root="coin-flip"] .cf-acc[open] summary::after{content:"−"}
[data-tool-root="coin-flip"] .cf-acc-panel{padding:2px 16px 16px;border-top:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] .cf-acc-panel h3{margin:16px 0 6px;font-size:18px}
[data-tool-root="coin-flip"] .cf-acc-panel p{max-width:72ch;margin:8px 0}
[data-tool-root="coin-flip"] .cf-acc-panel a{color:#111;text-decoration-thickness:1px;text-underline-offset:3px}
[data-tool-root="coin-flip"] .cf-related-card{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:16px;border-top:1px solid var(--cf-border)}
[data-tool-root="coin-flip"] .cf-related-card>div{padding:14px;border:1px solid var(--cf-border);border-radius:4px;background:#f7f7f7}
[data-tool-root="coin-flip"] .cf-related-card a{font-weight:800;color:#111;text-underline-offset:3px}
[data-tool-root="coin-flip"] .cf-related-card p{margin:5px 0 0;color:var(--cf-secondary)}
@media(max-width:900px){[data-tool-root="coin-flip"]{padding-right:8px;padding-left:8px}}
@media(max-width:720px){[data-tool-root="coin-flip"] .cf-workspace-grid{grid-template-columns:1fr}[data-tool-root="coin-flip"] .cf-related-card{grid-template-columns:1fr}}
@media(max-width:430px){[data-tool-root="coin-flip"]{padding-bottom:32px}[data-tool-root="coin-flip"] .tool-page-header{padding-top:18px}[data-tool-root="coin-flip"] .tool-page-header h1{font-size:27px}[data-tool-root="coin-flip"] .cf-panel{padding:12px}[data-tool-root="coin-flip"] .cf-result-surface{padding:14px}[data-tool-root="coin-flip"] .cf-actions,[data-tool-root="coin-flip"] .cf-result-actions{grid-template-columns:1fr}[data-tool-root="coin-flip"] .cf-primary-area{grid-template-columns:92px minmax(0,1fr);gap:12px}[data-tool-root="coin-flip"] .cf-coin-stage{min-height:92px}[data-tool-root="coin-flip"] .cf-coin{width:84px;height:84px}[data-tool-root="coin-flip"] .cf-coin-face{font-size:34px}[data-tool-root="coin-flip"] .cf-data-band,[data-tool-root="coin-flip"] .cf-round-grid{grid-template-columns:1fr}[data-tool-root="coin-flip"] .cf-data-band>div+div,[data-tool-root="coin-flip"] .cf-round-grid>div+div{border-top:1px solid var(--cf-border);border-left:0}[data-tool-root="coin-flip"] .cf-history-item{grid-template-columns:1fr;gap:2px}[data-tool-root="coin-flip"] h2{font-size:21px}[data-tool-root="coin-flip"] .cf-insights-card{padding:14px}}
@media(prefers-reduced-motion:reduce){[data-tool-root="coin-flip"] .cf-coin,[data-tool-root="coin-flip"] .cf-ratio-heads,[data-tool-root="coin-flip"] .cf-ratio-tails{animation:none!important;transition:none!important}}