:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#293c35;background:#f7f5ef;font-synthesis:none;--paper:#fffefa;--line:#dce2d5;--muted:#68756c;--green:#e7eee5;--orange:#a34e32}
*{box-sizing:border-box}body{margin:0}a{color:#50634c;text-underline-offset:4px}button,input{font:inherit}button{cursor:pointer;min-height:48px;border:1px solid var(--line);border-radius:13px;padding:12px 18px;color:inherit;background:var(--paper)}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #bc8839;outline-offset:4px}[hidden]{display:none!important}header{max-width:1140px;margin:auto;padding:24px 28px;display:flex;gap:20px;align-items:center;border-bottom:1px solid var(--line)}.brand{font-size:26px;font-weight:700;text-decoration:none;color:inherit}.brand small{display:block;font-size:12px;font-weight:400;margin-top:3px;color:var(--muted)}.version{margin-right:auto;font-size:12px;color:var(--muted)}header>a:last-child{font-size:13px}main{max-width:1100px;margin:auto;padding:24px 28px}.page-heading h1{font-size:30px;margin:0 0 10px}.page-heading p{color:var(--muted);margin:0;font-size:17px}.tabs{display:flex;gap:22px;border-bottom:1px solid var(--line);margin:24px 0}.tabs button{border:0;background:none;border-bottom:3px solid transparent;border-radius:0;padding:12px 3px}.tabs [aria-current=page]{font-weight:600;border-bottom-color:#293c35}.tabs span{font-size:12px;background:#e9ebdf;border-radius:5px;padding:2px 5px}.practice-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start}.lesson-picker h2{font-size:18px;margin:8px 0 20px}.lesson-picker>div{display:grid;gap:10px}.lesson-picker button{text-align:left;background:none;border-color:transparent;padding:18px}.lesson-picker button[aria-current=true]{background:#e7eddf;border-color:#cbd8c2}.lesson-picker strong{display:block;font-size:23px;margin-bottom:7px}.lesson-picker small{font-size:13px;color:var(--muted)}.quiet-note{margin-top:30px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);line-height:1.8}.practice-card{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:25px;box-shadow:0 10px 40px #293c3505;overflow:hidden}.card-top{padding:17px 28px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px}.consent-toggle{display:flex;align-items:center;gap:7px;color:#607259;font-size:12px}.consent-toggle input{accent-color:#526c46;width:18px;height:18px;margin:0}.screen-content{padding:26px 32px}.target{font-size:43px;letter-spacing:3px;line-height:1.4;margin:0 0 23px;overflow-wrap:anywhere}.target.single{font-size:86px;text-align:center;margin:18px 0 26px}.purpose{color:var(--muted);font-size:17px;line-height:1.7;margin:0 0 22px}.sample-row,.compare-row{display:flex;gap:10px;margin:14px 0 20px}.sample-row button:first-child{flex:1}.secondary{background:var(--green);border-color:#cedbc8;color:#3f5e3d}.primary{width:100%;background:var(--orange);color:#fff;border:0;font-size:19px;font-weight:550;min-height:60px;padding:17px 20px}.primary:hover{background:#914329}.text-button{border:0;background:transparent;color:#5e7056;min-height:44px;font-size:14px;padding:10px 8px}.full{display:block;width:100%;margin-top:8px}.under-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:10px}.muted,.minor{color:var(--muted);font-size:14px;line-height:1.7}.minor{font-size:12px}.center{text-align:center}.audio-bar{padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:0}.audio-bar:has(p:not(:empty)){padding-bottom:12px}.audio-bar p{font-size:14px;color:#5d7258;line-height:1.7;margin:0}.notice{background:#fff1dc;border:1px solid #e9cda4;color:#8b5c2c;border-radius:12px;padding:15px 20px;line-height:1.8}.headline{font-size:25px;line-height:1.5;margin:0 0 10px}.difference{font-size:18px;line-height:1.7;margin:0 0 16px}.compare-row>button{flex:1;font-size:16px;line-height:1.6}.compare-row small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:3px}.guide{background:#f1f2e9;border-radius:15px;padding:19px 22px;margin:14px 0 22px}.guide h3{font-size:15px;color:#61734f;margin:0 0 9px}.guide p{font-size:18px;line-height:1.8;margin:0}.guide .minor{font-size:12px;margin-top:10px;line-height:1.7}.guide button{margin-top:12px;padding:8px 0;min-height:36px;color:#587143;text-decoration:underline}.progress-note{font-size:14px;color:#667258;line-height:1.8;margin:0 0 18px}.badge{display:inline-block;border-radius:6px;background:#e9eee3;padding:5px 10px;color:#5c7050;font-size:12px;margin-bottom:16px}.wave{height:75px;display:flex;align-items:center;justify-content:center;gap:8px}.wave i{display:block;width:7px;height:var(--level,12px);border-radius:5px;background:#ad603f}.wave i:nth-child(even){height:calc(var(--level,12px) * 1.7)}.record-label{text-align:center;color:#9c5138;font-size:18px;margin:12px 0 20px}.tone-row{display:flex;gap:12px;margin:12px 0}.tone-row>span{flex:1;background:#f3f1e8;border-radius:10px;padding:10px 14px;font-size:14px}.tone-row b{float:right;font-size:23px}.tone-row>span:last-child{background:#eaf0e5}.scope-note{font-size:12px;line-height:1.9;color:#7b8177;max-width:710px;margin:22px 0 0 auto}.evidence-details{border-top:1px solid var(--line);margin-top:22px;padding-top:14px;font-size:12px;color:var(--muted);line-height:1.8}.evidence-details summary{cursor:pointer;min-height:32px}.evidence-details p{margin:8px 0}.evidence-details ul{padding-left:20px}.evidence-details a{font-size:12px}.history-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px;margin:16px 0}.history-card h3{margin:0 0 8px}.history-card audio{width:100%;margin:12px 0}.history-card .actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}dialog{max-width:470px;width:calc(100% - 32px);border:1px solid var(--line);border-radius:22px;background:var(--paper);color:inherit;padding:28px}dialog::backdrop{background:#293c3560}dialog h2{font-size:25px;margin:0 0 18px}dialog p{font-size:16px;line-height:1.8}footer{max-width:1100px;margin:10px auto;padding:25px 28px;color:#8a9186;font-size:12px}
@media(max-width:760px){.practice-layout{grid-template-columns:1fr;gap:18px}.lesson-picker h2,.quiet-note{display:none}.lesson-picker>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.lesson-picker button{padding:12px 7px;text-align:center}.lesson-picker strong{font-size:19px}.lesson-picker small{font-size:11px}.scope-note{margin-left:0}.page-heading h1{font-size:27px}}
@media(max-width:480px){header{padding:18px 16px;gap:12px}.brand{font-size:24px}.brand small{font-size:10px}.version{font-size:10px}header>a:last-child{max-width:100px;font-size:11px}main{padding:22px 14px}.page-heading h1{font-size:24px}.page-heading p{font-size:15px}.card-top{padding:15px 20px}.screen-content{padding:23px 22px}.target{font-size:32px}.target.single{font-size:76px}.headline{font-size:23px}.difference,.guide p{font-size:17px}.compare-row{gap:8px}.compare-row>button{font-size:14px;padding:12px 7px}.audio-bar{padding-left:22px;padding-right:22px}.guide{padding:17px}.primary{font-size:18px}}