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var(--tw-drop-shadow,)}}:root{--ink:#182134;--muted:#647085;--blue:#2455df;--line:#e3e7ed;--paper:#fbfcfe;--soft:#f0f4ff;--radius:12px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65}a{color:var(--blue);text-decoration:none}a:hover{text-underline-offset:4px;text-decoration:underline}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline-offset:4px;outline:3px solid 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var(--line);background:#fff;border-radius:12px;padding:30px}.timer-panel h2{font-size:21px}.timer-grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.field{margin-bottom:20px}.field label,.field-label{margin-bottom:7px;font-size:12px;font-weight:600;display:block}.field input:not([type=checkbox]):not([type=radio]),.field select{background:var(--paper);width:100%;min-height:44px;color:var(--ink);border:1px solid #cbd4e2;border-radius:6px;padding:10px 12px;display:block}.field input[type=checkbox],.field input[type=radio]{accent-color:var(--blue)}.notice{background:var(--soft);border:1px solid #cbd9f8;border-radius:8px;margin:20px 0;padding:16px;font-size:13px}.error{color:#a72c30;margin:10px 0;font-size:13px}.countdown{font-variant-numeric:tabular-nums;color:var(--blue);letter-spacing:-.04em;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:clamp(1.6rem,4vw,2.6rem);line-height:1.5}.card{border:1px solid 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0}.section-heading{display:block}.section-heading>.text-link{margin-top:14px;display:inline-block}.empty-state{gap:14px;padding:20px}.empty-mark{width:28px;height:28px}.empty-state h3{font-size:14px}.concept-grid{grid-template-columns:1fr;gap:24px}.concept{border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px}.concept-number{margin:0 0 10px}.concept h3{margin-bottom:8px}.guide-grid{grid-template-columns:1fr}.guide-card{padding:24px}.method-strip,.footer-top,.footer-bottom{display:block}.method-strip .text-link{margin-top:18px;display:inline-block}.site-footer{margin-top:25px;padding:30px 0}.footer-top nav{gap:15px;margin-top:20px}.footer-bottom p:last-child{text-align:left;margin-top:18px}.page-header{padding:42px 0 24px}.page-header .lede{font-size:16px}.tool-layout{grid-template-columns:1fr;gap:24px}.timer-panel{padding:20px}.timer-grid{grid-template-columns:1fr;gap:0}.tool-aside{padding-top:0}.article{padding-top:28px}.breadcrumbs{margin-bottom:30px}.prose{font-size:15px}.prose h2{font-size:23px}.article-header h1{font-size:34px}.method-strip .button{margin-top:18px}.visual-bottom{justify-content:space-around}.timer-panel .actions{align-items:stretch}.timer-panel .button,.timer-panel .button-secondary{max-width:100%}}.button-row{flex-wrap:wrap;gap:12px;margin:20px 0;display:flex}.timer-panel .countdown{background:var(--soft);border-radius:8px;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0;padding:20px 15px;display:grid}.countdown strong{font-weight:500;display:block}.countdown span{letter-spacing:0;color:var(--muted);font-family:Arial,sans-serif;font-size:10px;display:block}.time-preview{margin:18px 0;font-size:13px}.time-preview dt{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-top:13px;font-size:10px}.time-preview dd{overflow-wrap:anywhere;font-variant-numeric:tabular-nums;margin:4px 0 0}.calendar-export{border-top:1px solid var(--line);margin-top:28px;padding-top:24px;font-size:13px}.checkbox-field{align-items:flex-start;gap:10px;margin:16px 0;display:flex}.checkbox-field input{flex-shrink:0;margin-top:5px}.field input,.field select{min-width:0}.timer-panel form>p{color:var(--muted);font-size:13px}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}