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dialog{max-width:calc(100% - 32px);width:460px;background:#faf9f5;color:var(--ink);border:1px solid #d0d6d4;border-radius:12px;padding:28px;box-shadow:0 20px 70px #14223a40;margin:auto}dialog::backdrop{background:#14223a88}dialog h2{font-size:25px;margin-bottom:13px}dialog p{font-size:13px;color:#60707c;line-height:1.7}dialog label{font-size:12px;display:block;margin:14px 0 6px;font-weight:550}dialog input{padding:11px;border:1px solid #bcc6ca;border-radius:5px;width:100%;background:#fff;color:var(--ink);font-size:16px}dialog .dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}dialog button{min-height:42px;padding:9px 15px;border:1px solid #ccd2d5;border-radius:5px;font-size:13px;background:#eeefec;color:#344559}dialog .primary{background:#203553;color:#fff;border-color:#203553}dialog .form-error{color:#a73116;font-size:12px;margin:10px 0 0}
@media(min-width:1400px){main{padding-top:44px}.counter-readout{padding:26px 0}.counter-readout output{font-size:112px}}
@media(max-width:1000px){main{padding-inline:24px}.header-inner{padding-inline:24px}.nav .nav-badge{display:none}.intro{display:block}.trust-line{justify-content:flex-start;max-width:none;margin-top:12px;padding:0}.workbench{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:16px}.counter-panel{padding-inline:22px}.panel-bottom{margin-inline:-22px;padding-inline:22px}.panel-top h2{font-size:14px}.save-state{font-size:9px}.odds-panel{padding:22px}.odds-panel h2{font-size:25px}.odds-context{display:block}.reference-tag{display:none}.rate-controls{grid-template-columns:1fr}.rate-controls select{width:100%;font-size:12px}.rate-controls p{font-size:10px}.session-row-label{display:block}.session-row-label>span{display:block;margin-top:4px}.explainer{gap:35px}.steps,.fit-grid{gap:24px}.keyboard-hint{display:none}}
@media(max-width:700px){html{scroll-padding-top:80px}main{padding:28px 18px 0}.header-inner{padding:13px 18px;gap:10px}.brand{font-size:17px}.brand::before{width:28px;height:28px}.nav{font-size:11px;gap:3px}.nav a{padding:6px}.nav a:first-child,.nav a:nth-child(2){display:none}main>h1{font-size:36px;letter-spacing:-.055em}body.home-page main>h1::before{font-size:9px;margin-bottom:12px}.intro{margin-bottom:21px}.intro p{font-size:16px;line-height:1.7}.intro p span{font-size:13px;display:block;line-height:1.6;margin-top:4px}.trust-line{font-size:10px;gap:12px}.workbench{display:grid;grid-template-columns:1fr;gap:17px}.counter-panel{padding:19px 20px 0;border-radius:11px}.panel-top h2{font-size:13px}.panel-top h2 img{width:23px;height:23px}.save-state{font-size:9px}.counter-readout{padding:20px 0 22px}.counter-readout output{font-size:86px}.count-caption{font-size:11px}.main-controls{grid-template-columns:60px 1fr;gap:10px}.main-controls button{min-height:60px;font-size:16px}.add-one{padding-inline:16px;gap:6px}.add-one::before{display:none}.quick-controls{padding:12px 0 17px}.quick-controls button{min-height:40px;padding:7px 17px}.rate-controls{padding-top:13px;gap:6px}.rate-controls label{font-size:11px}.rate-controls select{min-height:40px}.rate-controls p{line-height:1.7}.panel-bottom{margin-inline:-20px;padding:9px 20px}.panel-bottom button{min-height:34px;font-size:11px}.odds-panel{padding:24px}.odds-panel h2{font-size:25px;margin-bottom:18px}.odds-panel h2 br{display:none}.odds-heading{margin-bottom:10px}.odds-label{max-width:none}.odds-number{font-size:43px;line-height:1.4}.odds-context{display:flex;margin-bottom:12px}.reference-tag{display:inline}.odds-note{max-width:none;font-size:12px}.odds-split{margin-bottom:8px}.action-status{font-size:10px;margin-top:9px}.section-top{display:block;margin-bottom:17px}.section-top h2{font-size:25px}.backup-actions{margin-top:17px;gap:8px}.backup-actions button{flex:1;min-height:42px;font-size:11px}.session-section{margin-top:35px}.log-summary{display:block;padding:15px}.log-summary p{margin-top:8px}.log-summary p>span{margin-left:8px}.log-summary>div{font-size:13px;justify-content:space-between}.session-row{grid-template-columns:1fr 60px;gap:6px 12px;padding:12px 0;margin-inline:15px}.session-row-label{grid-column:1}.session-rates{grid-column:1;grid-row:2;font-size:10px}.session-number{grid-column:2;grid-row:1/3;font-size:19px}.log-footer{align-items:flex-start;gap:18px}.log-footer p{font-size:10px;max-width:235px}.log-footer button{font-size:10px}.walkthrough{padding-top:58px}.walkthrough .section-top>p{margin-top:13px}.steps{grid-template-columns:1fr;gap:22px;margin-bottom:20px}.steps article{padding-top:18px}.steps h3{font-size:18px}.step-number{margin-bottom:9px}.steps p{font-size:14px}.example-figure{padding:12px;margin-top:26px;border-radius:8px}.example-figure figcaption{font-size:10px}.explainer{grid-template-columns:1fr;gap:17px;margin-top:52px;padding-top:38px}.explainer h2{font-size:30px}.explainer h2 br{display:none}.explainer p{font-size:14px}.math-panel{padding:22px}.math-panel p{font-size:12px}.math-panel .formula{font-size:15px}.fit-section{padding-top:48px}.fit-section>h2{font-size:27px}.fit-grid{grid-template-columns:1fr;gap:25px;padding-top:7px}.fit-grid h3{font-size:18px}.fit-grid p{font-size:14px}.faq-section{padding-top:55px}.faq-section .section-top .text-link{margin-top:15px}.faq-list summary{font-size:14px;padding:19px 0;line-height:1.6}.faq-list details p{font-size:13px}.footer-inner{padding:25px 18px}.site-footer{margin-top:52px}.legal-copy p{font-size:15px}dialog{padding:23px}}
@media(max-width:360px){main{padding-inline:14px}.header-inner{padding-inline:14px}.brand{font-size:16px}main>h1{font-size:32px}.trust-line{gap:7px;font-size:9px}.counter-panel{padding-inline:17px}.panel-top{gap:6px}.save-state{font-size:8px}.counter-readout output{font-size:72px}.panel-bottom{margin-inline:-17px;padding-inline:17px}.add-one{font-size:14px!important}.quick-controls button{padding-inline:14px}.math-panel{padding:17px}.math-panel .formula{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
.counter-readout output.long-count{font-size:clamp(36px,5.5vw,65px);line-height:1.9;letter-spacing:-.06em}
@media(max-width:700px){.counter-readout output.long-count{font-size:40px;line-height:2.58}}
@media(max-width:360px){.counter-readout output.long-count{font-size:34px;line-height:2.54}}
/* 可选统计选择保持紧凑，并允许键盘操作。 */
.privacy-settings{font:inherit;font-size:12px;color:inherit;text-decoration:underline;background:none;border:0;cursor:pointer;padding:8px}
.privacy-choice{position:fixed;inset:auto 20px 20px;z-index:40;max-width:780px;margin:auto;padding:18px 22px;background:#fff;border:1px solid #c7ccd2;border-radius:12px;box-shadow:0 10px 35px #14243524;display:flex;align-items:center;gap:20px;color:#202837}
.privacy-choice[hidden]{display:none}
.privacy-choice strong{font-size:14px}.privacy-choice p{font-size:12px;line-height:1.5;margin:5px 0 0}
.privacy-actions{display:flex;gap:8px;flex-shrink:0}.privacy-actions button{padding:11px 13px;border:1px solid #aeb8c6;background:#fff;color:#202837;border-radius:6px;font:inherit;font-size:12px;cursor:pointer;min-height:44px}
.privacy-actions button:focus-visible,.privacy-settings:focus-visible{outline:3px solid #275bc4;outline-offset:3px}
.privacy-actions button:disabled{opacity:.5;cursor:default}
@media(max-width:640px){.privacy-choice{inset:auto 12px 12px;padding:14px;display:block}.privacy-actions{margin-top:10px}.privacy-actions button{flex:1}}