@layer reset{*,:before,:after{box-sizing:border-box}body,h1,h2,h3,p,figure{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}img,svg{max-width:100%}button{cursor:pointer}a{color:inherit}button:disabled,input:disabled,select:disabled{cursor:not-allowed;opacity:.5}[hidden]{display:none!important}}@layer base{:root{--ink:#0d0e10;--muted:#59616a;--primary:#646f79;--paper:#fff;--surface:#f5f6f3;--line:#e4e7e2;--soft-green:#dce9e0;--radius:20px;--font:"Helvetica Neue", Helvetica, Arial, sans-serif}html{scroll-behavior:smooth;scroll-padding-top:30px}body{font-family:var(--font);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.6}h1,h2,h3{letter-spacing:-.03em;font-weight:400;line-height:1.18}h1{font-size:clamp(34px,4vw,54px)}h1 strong,h2 strong,h3 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minmax(0,1fr);align-items:start;gap:56px;margin-top:56px;padding-top:56px;display:grid}.reading-note{position:sticky;top:30px}.reading-note p{letter-spacing:-.03em;margin:16px 0 25px;font-size:25px;line-height:1.3}.reading-note a{color:var(--muted);font-size:12px;text-decoration:none}.trust-page{max-width:820px;margin:auto;padding:55px 32px 90px}.trust-page .breadcrumb{justify-content:flex-start}.trust-page h1{margin-bottom:30px}.not-found{max-width:820px;min-height:55vh;margin:auto;padding:90px 32px}.not-found p{margin:20px 0}.not-found .primary-button{margin-top:20px}.site-footer{background:var(--surface);border-top:1px solid var(--line)}.footer-inner{justify-content:space-between;gap:40px;max-width:1120px;margin:auto;padding:52px 32px;display:flex}.footer-inner p{margin-top:12px}.footer-inner nav{grid-template-columns:repeat(2,auto);align-content:start;gap:12px 30px;font-size:13px;display:grid}.footer-inner nav a{min-height:32px;text-decoration:none}.footer-note{border-top:1px solid var(--line);max-width:1056px;color:var(--muted);justify-content:space-between;margin:auto;padding:20px 0 26px;font-size:11px;display:flex}}@layer components{.timer-tool{--progress:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);max-width:860px;margin:auto;padding:25px 32px 14px}.tool-topline{justify-content:space-between;align-items:center;gap:15px;display:flex}.tool-topline .caps{color:var(--muted);font-size:10px}.state-badge{white-space:nowrap;background:#fff;border:1px solid #d7ddd4;border-radius:20px;align-items:center;gap:7px;padding:3px 10px;font-size:11px;display:inline-flex}.state-badge:before{content:"";background:#7d877e;border-radius:50%;width:5px;height:5px}[data-state=Running]>.tool-topline .state-badge:before,[data-state=Running] .card-topline .state-badge:before{background:#47654d}[data-state=Finished]>.tool-topline .state-badge,[data-state=Finished] .card-topline 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button+button{margin-left:8px}.progress-strip{background:#dce1d8;border-radius:4px;height:3px;margin:15px 0 24px;overflow:hidden}.progress-strip:after{content:"";height:100%;width:calc((1 - var(--progress)) * 100%);background:#677c69;display:block}.timer-tool:not(.classroom-tool):not(.schedule-tool)>.progress-strip,.classroom-tool .progress-ring{display:none}.classroom-tool .countdown-display{aspect-ratio:auto;width:100%;min-height:265px}.classroom-tool .timer-digits{font-size:clamp(75px,13vw,150px)}.classroom-tool[data-digit-size=large] .timer-digits{font-size:clamp(85px,15vw,180px)}.classroom-tool[data-digit-size=extra] .timer-digits{font-size:clamp(90px,18vw,210px)}.classroom-tool.high-contrast{color:#fff;background:#0d0e10;border-color:#0d0e10}.high-contrast .muted,.high-contrast .caps,.high-contrast .task-label,.high-contrast .tool-message,.high-contrast .display-caption,.high-contrast .tool-options>summary{color:#e4e8e2}.high-contrast .state-badge{color:#0d0e10}.high-contrast .primary-button{color:var(--ink);background:#fff}.high-contrast .text-button{color:inherit}.high-contrast kbd{color:var(--ink)}.presentation{max-width:none}.presentation .tool-topline>.caps,.presentation .keyboard-hint{display:none}.presentation .countdown-display{min-height:360px}.presentation .timer-digits{font-size:clamp(100px,20vw,250px)}.timer-tool:fullscreen{border-radius:0;flex-direction:column;justify-content:center;width:100%;max-width:none;height:100%;padding:32px;display:flex;overflow-y:auto}.timer-tool:fullscreen .countdown-display{width:min(440px,65vh)}.classroom-tool:fullscreen .countdown-display{width:100%}.timer-tool:fullscreen .timer-digits{font-size:clamp(100px,17vw,180px)}.classroom-tool:fullscreen .timer-digits{font-size:clamp(110px,25vw,330px)}.schedule-workspace{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:center;gap:36px;margin-top:25px;display:grid}.schedule-form{border-right:1px solid var(--line);padding-right:30px}.schedule-form 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15px;display:flex}.timer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:20px;display:grid}.timer-card{background:#fff;border:1px solid #dce2d9;border-radius:16px;min-width:0;padding:22px}.card-topline{justify-content:space-between;align-items:center;margin-top:10px;display:flex}.card-digits{letter-spacing:-.06em;font-variant-numeric:tabular-nums;text-align:center;white-space:nowrap;padding:18px 0;font-size:clamp(44px,7vw,72px);font-weight:300;line-height:1.2}.card-actions{flex-wrap:wrap;justify-content:center;gap:7px;display:flex}.card-actions>button{padding:10px 12px;font-size:11px}.card-actions>.primary-button{min-height:44px}.card-options{border-top:1px solid var(--line);margin-top:15px;padding-top:8px}.card-options>summary{color:var(--muted);padding-top:9px;font-size:12px}.card-options button{margin:12px 0;font-size:12px}.completion-queue{margin-top:22px}.completion-queue ol{max-height:200px;font-size:13px;overflow:auto}.tool-hub{margin:46px auto 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.countdown-display{min-height:200px}.classroom-tool .countdown-main .timer-actions>.primary-button{width:100%}}@media (width<=850px){.header-inner{padding:18px 24px}.site-header nav{gap:18px}.nav-about{display:none}.support-layout{grid-template-columns:minmax(0,1fr);gap:0}.reading-note{display:none}.hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-note{margin:0 32px}.tool-page{padding-top:34px}}@media (width<=600px){.header-inner{flex-wrap:wrap;gap:12px;padding:15px 20px}.brand{font-size:17px}.brand-mark{width:31px;height:31px}.site-header nav{gap:20px;font-size:12px}.nav-home{display:none}.menu-panel{max-width:calc(100vw - 40px);right:-8px}.tool-page{padding:30px 20px 60px}.page-heading{margin-bottom:24px}.page-heading h1{margin-bottom:14px}.page-intro{font-size:14px;line-height:1.65}.eyebrow{font-size:10px}.timer-tool{border-radius:16px;padding:18px 18px 12px}.tool-topline .caps{letter-spacing:.08em;font-size:8px}.countdown-display{width:270px;margin-top:18px}.display-content{padding:20px}.timer-digits{font-size:78px}.timer-actions{gap:8px}.timer-actions>.primary-button{width:100%}.timer-actions>button:not(.primary-button){flex:1;padding-inline:12px;font-size:12px}.tool-utility{gap:9px;margin-top:10px}.tool-message{font-size:11px}.form-grid{gap:12px}.form-grid label{font-size:12px}.storage-options{grid-template-columns:1fr;gap:2px}.storage-options>.small:last-child{grid-column:auto}.keyboard-hint{gap:4px;font-size:8px}.keyboard-hint>span{margin:0 2px}.tool-hub{margin-top:32px}.hub-heading{display:block}.hub-heading>p:last-child{margin-top:8px;font-size:20px}.related-grid,.hub-grid{grid-template-columns:1fr}.related-card{padding:16px}.support-layout{margin-top:36px;padding-top:36px}.prose h2{margin-top:40px;font-size:26px}.prose h3{font-size:21px}.prose p,.prose 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.timer-digits{font-size:clamp(65px,23vw,115px)}.classroom-tool[data-digit-size=extra] .timer-digits,.presentation .timer-digits{font-size:clamp(65px,24vw,125px)}.presentation .countdown-display{min-height:250px}.trust-page{padding:35px 24px 60px}.trust-page h1{font-size:34px}.footer-inner{flex-direction:column;gap:30px;padding:36px 24px}.footer-inner nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.footer-note{margin:0 24px;display:block}.footer-note>span{margin:6px 0;display:block}.timer-tool:fullscreen{justify-content:flex-start;padding:20px}.timer-tool:fullscreen .timer-digits{font-size:clamp(65px,23vw,130px)}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}}