:root{--paper:#f4f0e6;--ink:#283a36;--muted:#727b70;--blue:#2963a1;--line:#d7d8ca;--warm:#b97843;--red:#ab4f3c}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:14px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}header,main,footer{max-width:1180px;margin:auto}header{height:94px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.wordmark{text-decoration:none;color:var(--ink);font-family:Georgia,serif;font-size:28px}.wordmark>span:last-child{font:10px Arial;letter-spacing:2px;margin-left:14px}.tinybell{color:var(--warm);font-size:24px;margin:0 2px}.edition{font-size:9px;letter-spacing:1.7px;color:var(--muted)}.text-button{border:0;background:none;color:var(--ink);padding:10px 0;font-size:12px}.intro{padding:58px 46px 50px;display:flex;justify-content:space-between;align-items:center}.eyebrow{font-size:9px;letter-spacing:1.9px;font-weight:700;margin:0 0 18px;color:var(--muted)}h1{font:normal 76px/.96 Georgia,serif;letter-spacing:-3px;margin:0 0 24px}h1 em{font-weight:normal;color:var(--blue)}.dek{font-size:15px;line-height:1.65;margin:0;color:#626e63}.intro-art{width:320px;margin-right:48px;text-align:center}.intro-art svg{width:100%;overflow:visible}.intro-art span{font:8px Arial;letter-spacing:2px;color:var(--muted)}.arch{stroke:#c9cbbd;stroke-width:1;fill:none}.art-line{fill:none;stroke:var(--blue);stroke-width:2}.bell-art{fill:var(--paper);stroke:var(--warm);stroke-width:1.5}.rope-art{stroke:var(--warm);stroke-width:1}.intro-art text{font:8px monospace;letter-spacing:2px;fill:var(--muted)}.room{border:1px solid #c9cfc2;border-radius:4px;background:#f9f7ef}.room-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:0 26px;height:68px}.method-tabs{display:flex;height:100%;gap:28px}.method{border:0;background:none;color:var(--muted);border-bottom:2px solid transparent;font-size:15px;padding:0 0 0}.method span{font:10px monospace;margin-right:8px;color:var(--muted)}.method.active{color:var(--ink);border-color:var(--blue)}#courseLength{font-size:11px;color:var(--muted)}.room-grid{display:grid;grid-template-columns:280px 1fr}.setup{padding:30px 26px;border-right:1px solid var(--line)}.bell-picker{display:flex;justify-content:space-between;gap:5px}.bell-picker button{width:32px;height:38px;border:1px solid var(--line);border-radius:3px;background:transparent;color:var(--ink);font:20px Georgia}.bell-picker .selected{color:#fff;background:var(--blue);border-color:var(--blue)}.small{font-size:11px;line-height:1.6;color:var(--muted)}#bellHint{margin:10px 0 26px}.setup>label,legend{display:block;font-size:10px;font-weight:700;letter-spacing:.4px;margin-bottom:10px}select{width:100%;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:10px 8px;border-radius:3px}fieldset{border:0;padding:0;margin:26px 0}.radio{display:block;font-size:12px;line-height:1.5;margin:0 0 12px;cursor:pointer}.radio input{accent-color:var(--blue);margin:0 6px 0 0}.radio span{display:block;margin-left:23px;font-size:10px;color:var(--muted)}.primary{background:var(--ink);color:#fff;border:1px solid var(--ink);border-radius:3px;width:100%;padding:13px;text-align:left;font-size:12px}.primary span{float:right}.secondary{display:block;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:3px;width:100%;padding:12px;margin-top:9px;font-size:11px}.audio-note{margin:18px 0 0}.practice{padding:24px 34px;min-width:0}.status-line{display:flex;align-items:center;gap:8px;font-size:10px;color:var(--muted);margin-bottom:28px}.mono{font:10px monospace;margin-left:auto}.live-dot{width:5px;height:5px;background:#a5aa9a;border-radius:50%}.live-dot.on{background:var(--blue)}.line-head{display:flex;justify-content:space-between;gap:12px}.line-head .eyebrow{font-size:8px;margin:0 0 8px}h2{font:23px/1.15 Georgia,serif;margin:0}.guide-badge{align-self:start;font-size:9px;background:#e7edf0;color:var(--blue);padding:6px 9px;white-space:nowrap;border-radius:20px}.chart-wrap{position:relative;margin:20px 0 0;overflow:hidden}#lineChart{display:block;width:100%;height:218px}#memoryVeil{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f9f7efeb}#memoryVeil span{font:italic 25px Georgia;color:var(--blue)}#memoryVeil p{font-size:11px;color:var(--muted)}[hidden]{display:none!important}.row-strip{display:flex;justify-content:center;gap:24px;height:40px;font:18px Georgia;color:#899084;transition:opacity .4s}.row-strip .own{color:var(--blue);border-bottom:1px solid var(--blue)}.row-strip .sounding{color:var(--ink);font-weight:bold}.strike{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#e7edf1;border:1px solid #bccedc;color:var(--blue);border-radius:4px;width:100%;padding:17px 22px;user-select:none;touch-action:manipulation;transition:background .12s}.strike:active,.strike.hit{background:#cedde9}.strike-main{font:24px Georgia}.strike-main b{font-weight:normal;margin-left:8px}.strike>span:last-child{font-size:8px;letter-spacing:1.4px}.strike i{font:italic 11px Georgia;margin:0 6px;letter-spacing:0}.feedback-row{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:var(--muted);min-height:45px;align-items:center}#accuracy{font:10px monospace;white-space:nowrap}.session-progress{height:2px;background:var(--line)}.session-progress i{height:100%;display:block;background:var(--blue);width:0}.room-foot{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding:17px 26px;color:var(--muted);font-size:10px}.room-foot>span{white-space:nowrap}.room-foot b{color:var(--blue);font:italic 14px Georgia;margin-right:6px}.room-foot b:nth-child(2){margin-left:15px}.room-foot p{margin:0;font:11px monospace}.room-foot p span{font:10px Arial;margin-left:10px}.room-foot em{color:var(--warm);font-style:normal}.teaching{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;padding:42px 26px}.step-number{font:italic 22px Georgia;color:var(--warm)}h3{font:20px Georgia;margin:12px 0}p{line-height:1.65}.teaching p{font-size:12px;color:#697468;margin:0}details{border-block:1px solid var(--line);margin:0 26px 36px}summary{cursor:pointer;padding:20px 0;font:18px Georgia}summary span{float:right;font:10px Arial;color:var(--muted);padding-top:5px}.context-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;padding-bottom:24px;font-size:12px;color:#626e63}.context-grid h3{color:var(--ink)}code{font-size:11px;word-break:break-word}a{color:var(--blue)}.sources{font-size:10px}footer{display:flex;justify-content:space-between;align-items:center;padding:0 26px 30px;color:var(--muted);font-size:9px;letter-spacing:1px}footer>span:nth-child(2){font:italic 13px Georgia;letter-spacing:0}.result{border-left:2px solid var(--blue);padding:0 0 0 15px;margin-top:20px}.result h3{margin:0 0 8px}.result p{font-size:12px;margin:7px 0}.result .metrics{font:11px monospace;color:var(--blue)}.result button{color:var(--blue);border:0;background:none;padding:10px 0 0;font-size:12px}
@media(min-width:1400px){header,main,footer{max-width:1200px}}@media(max-width:1240px){header,main,footer{margin-left:28px;margin-right:28px}}@media(max-width:800px){header{height:74px}.edition{display:none}.intro{padding:40px 14px}.intro-art{width:240px;margin-right:0}h1{font-size:64px}.room-grid{grid-template-columns:230px 1fr}.setup{padding:26px 18px}.practice{padding:24px 20px}.bell-picker{gap:3px}.bell-picker button{width:28px}.method-tabs{gap:18px}.method{font-size:13px}.room-top{padding:0 18px}.room-foot{flex-direction:column;align-items:flex-start;gap:12px}.teaching{gap:24px;padding-inline:10px}.room-foot p span{display:block;margin:8px 0 0}.row-strip{gap:18px}h2{font-size:20px}.line-head{display:block}.guide-badge{display:inline-block;margin-top:12px}.strike{padding:17px 12px}.strike>span:last-child{font-size:7px;letter-spacing:.5px}.strike i{display:none}.context-grid{gap:28px}}
@media(max-width:600px){header,main,footer{margin-inline:18px}.wordmark{font-size:24px}.wordmark>span:last-child{font-size:8px;letter-spacing:1px;margin-left:6px}header>.text-button{font-size:10px}.intro{padding:34px 5px}.intro-art{width:140px;align-self:center}.intro-art span{font-size:6px;letter-spacing:.8px}.intro h1{font-size:53px;letter-spacing:-2px}.dek{font-size:12px}.intro .eyebrow{font-size:7px;letter-spacing:1px}.room-top{height:auto;min-height:62px;padding:0 14px;flex-wrap:wrap}.method-tabs{height:56px;width:100%;justify-content:space-between}.method{font-size:13px}.method span{font-size:9px}.room-top>#courseLength{padding:0 0 12px;font-size:10px}.room-grid{display:flex;flex-direction:column}.setup{padding:20px;border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.setup>.eyebrow,.bell-picker,#bellHint{grid-column:1 / -1}.setup>.eyebrow{margin-bottom:12px}.bell-picker{justify-content:flex-start;gap:10px}.bell-picker button{width:36px;height:36px}.setup #bellHint{margin-bottom:18px}.setup>label{grid-column:1 / -1;margin-bottom:8px}.setup select{grid-column:1 / -1}.setup fieldset{grid-column:1 / -1;display:flex;gap:14px;margin:18px 0 12px}.setup legend{margin-bottom:10px}.radio{font-size:11px}.radio span{font-size:9px;margin-left:0}.primary,.secondary{align-self:start;font-size:10px;padding:12px 9px;min-height:40px}.secondary{margin:0}.audio-note{grid-column:1 / -1;margin:12px 0 0;font-size:9px}.audio-note br{display:none}.practice{padding:21px 18px}.status-line{margin-bottom:22px}.line-head{display:flex}.line-head h2{font-size:21px}.guide-badge{margin:0;padding:6px;font-size:8px}.chart-wrap{margin-top:12px}#lineChart{height:200px}.strike{min-height:66px;padding-inline:18px}.strike-main{font-size:24px}.strike>span:last-child{font-size:8px;letter-spacing:1px}.row-strip{gap:28px}.teaching{display:block;padding:24px 8px}.teaching>div{position:relative;padding-left:34px;margin:0 0 25px}.step-number{position:absolute;left:0;top:0}.teaching h3{font-size:19px;margin:0 0 8px}.teaching p{font-size:11px}details{margin:0 6px 25px}summary{font-size:17px}summary span{display:block;float:none;margin-left:20px}.context-grid{display:block;font-size:11px}.context-grid>div{margin-bottom:22px}footer{padding:0 0 22px;flex-wrap:wrap;gap:15px}footer>span:nth-child(2){display:none}.room-foot{padding:16px 18px}.room-foot p{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}