:root{--ink:#263e37;--muted:#7b837d;--green:#297563;--green-dark:#205a4c;--soft:#eaf1e8;--paper:#faf9f5;--line:#e7e8df;--gold:#dfb758;--radius:18px;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #d2a854;outline-offset:4px}input:focus,select:focus{outline:2px solid #719988;outline-offset:2px}button{color:inherit}a{color:var(--green);text-underline-offset:4px}button{border:0;background:none}button,a{transition:background .16s,color .16s,box-shadow .16s}button:hover:not(:disabled){filter:brightness(.97)}[hidden]{display:none!important}.topbar{height:88px;display:flex;align-items:center;gap:36px;max-width:1440px;padding:0 48px;margin:auto;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:20px;font-weight:750;letter-spacing:2px}.brand small{display:block;font-size:8px;letter-spacing:2px;margin-top:3px;color:var(--green)}.topbar nav{display:flex;align-items:stretch;gap:30px;margin-left:52px;height:100%;font-size:14px}.topbar nav a,.topbar nav button{position:relative;display:flex;align-items:center;text-decoration:none;white-space:nowrap;padding:0 2px}.nav-active:after{content:'';height:3px;position:absolute;bottom:0;left:0;right:0;border-radius:4px;background:var(--green)}.nav-active{font-weight:700}.text-button{color:var(--green);font-size:13px;padding:8px 0;line-height:1.5}.family-label{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}.dot{display:inline-block;background:#8da77a;width:6px;height:6px;border-radius:50%;margin-right:6px}main{max-width:1440px;margin:auto;padding:0 48px}.hero{display:flex;align-items:center;justify-content:space-between;padding:42px 16px 24px;min-height:280px}.eyebrow{font-size:11px;font-weight:600;letter-spacing:2px;color:var(--green)}.eyebrow span{color:var(--gold);margin-left:8px}h1{font-size:37px;line-height:1.4;letter-spacing:1px;font-weight:750;margin:13px 0 12px}p{line-height:1.8}.hero p{font-size:14px;color:#778078;line-height:1.9;margin:0}.hero-tags{display:flex;gap:9px;margin-top:22px}.hero-tags span{font-size:10px;padding:5px 9px;border:1px solid #e1e4d9;border-radius:5px;color:#707d6f;background:#f2f3ea}.hero-art{position:relative;width:310px;height:235px;margin-right:75px;background:radial-gradient(ellipse at center,#edf1dc 0%,#f0f2e2 50%,transparent 70%)}.hero-art svg{height:230px;width:280px;position:absolute;bottom:0;left:10px}.bubble{position:absolute;right:-44px;top:34px;transform:rotate(6deg);font-size:11px;background:white;border:1px solid #e9e8dc;border-radius:20px 20px 20px 0;padding:10px 13px;z-index:1;color:#788164}.art-spark{position:absolute;color:var(--gold);font-size:26px}.art-spark.one{left:10px;top:65px}.art-spark.two{right:15px;bottom:25px}.art-stamp{position:absolute;left:-18px;bottom:23px;font-size:10px;letter-spacing:2px;color:#72816c;border:1px solid #c7d3bf;border-radius:40%;padding:9px;transform:rotate(-12deg)}.today-strip{display:flex;align-items:center;gap:32px;padding:19px 22px;border:1px solid #e0e7da;border-radius:13px;background:#f0f4e9;margin:0 0 34px}.today-strip>div:first-child{display:flex;align-items:center;gap:13px;flex:1}.sun-icon{font-size:30px;color:#b99d44}.today-strip strong{display:block;font-size:13px;font-weight:650}.today-strip small{display:block;font-size:11px;color:#818777;margin-top:4px}.today-progress{display:flex;align-items:center;gap:12px}.progress-track{width:126px;height:5px;border-radius:5px;background:#dce6d4;overflow:hidden}#progress-bar{display:block;width:0;height:100%;background:#71947a;transition:width .3s}.today-progress>span{font-size:11px;color:#73806b;white-space:nowrap}.today-strip>.text-button{font-size:12px;white-space:nowrap}.practice-layout{display:grid;grid-template-columns:215px minmax(0,1fr) 255px;gap:30px;align-items:start;scroll-margin-top:20px}.section-label{font-size:12px;font-weight:650}.lesson-rail>.section-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.section-label>span{font-size:9px;color:var(--muted);font-weight:400}.lesson-item{width:100%;display:flex;align-items:flex-start;gap:10px;text-align:left;padding:16px 12px;margin-bottom:10px;border:1px solid var(--line);border-radius:11px;background:#fff;position:relative;min-height:88px}.lesson-item.active{background:#edf3ec;border-color:#8eae97;box-shadow:0 0 0 1px #8eae9720}.lesson-number{display:flex;align-items:center;justify-content:center;min-width:29px;height:29px;border-radius:9px;background:#f3f3ed;color:#8d9689;font-size:12px;font-weight:600}.active .lesson-number{background:var(--green);color:white}.lesson-text{flex:1;min-width:0}.lesson-text strong{display:block;font-size:12px;font-weight:650;line-height:1.6}.lesson-text small{display:block;font-size:10px;color:#92988b;margin-top:5px}.lesson-status{display:block;margin-top:7px;font-size:9px;color:var(--green)}.lesson-status.empty{color:#9d9f92}.whole-button{display:flex;align-items:center;gap:10px;text-align:left;border:1px dashed #d5d9cd;border-radius:10px;padding:13px 11px;margin-top:17px;width:100%;font-size:11px}.whole-button small{display:block;font-size:9px;color:var(--muted);margin-top:5px}.whole-button>span:first-child{font-size:22px;color:var(--green)}.whole-button>span:last-child{margin-left:auto}.rail-note{margin-top:28px;display:flex;gap:9px;padding:0 9px}.rail-note p{font-size:11px;color:#9a9d8c;line-height:1.9;margin:0}.lesson-heading{display:flex;justify-content:space-between;align-items:center;margin:0 0 20px}.lesson-heading .eyebrow{font-size:9px;letter-spacing:1px}h2{font-size:23px;margin:7px 0 0;line-height:1.5;letter-spacing:.5px}.count-badge{font-size:10px;background:#f0eee4;color:#8d8572;padding:6px 10px;border-radius:6px;white-space:nowrap}.mode-tabs{display:flex;padding:4px;border-radius:10px;background:#f0f0e9;gap:4px}.mode-tabs button{flex:1;padding:10px 8px;border-radius:7px;font-size:10px;color:#a1a597;white-space:nowrap}.mode-tabs button span{margin-left:5px;font-size:12px;font-weight:550;color:#7e8979}.mode-tabs button[aria-selected=true]{background:#fff;box-shadow:0 2px 6px #263e3708;color:var(--green)}.mode-tabs button[aria-selected=true] span{color:var(--green)}.mode-intro{font-size:11px;color:#8b9184;line-height:1.7;margin:15px 0 13px;min-height:19px}.video-shell{aspect-ratio:16/9;background:#e6ebe4;border-radius:13px;position:relative;overflow:hidden}.video-cover{position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,#edf3df,#e1ebe1);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:18px}.video-cover:before,.video-cover:after{content:'';position:absolute;width:100px;height:100px;border-radius:50%;border:1px solid #b4c6af50;left:-30px;bottom:-25px}.video-cover:after{width:180px;height:180px;left:auto;bottom:auto;right:-50px;top:-60px}.video-emblem{font-size:22px;color:var(--green);width:52px;height:52px;border-radius:50%;border:1px solid #c6d5bf;background:#f8fbf0;display:grid;place-items:center;margin-bottom:12px;padding-left:3px}.video-cover strong{font-size:17px;letter-spacing:1px}.video-cover #clip-description{font-size:11px;margin:7px 0 17px;color:#7a8874}.button{border-radius:9px;padding:12px 19px;font-size:12px;font-weight:550;display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:43px}.primary{background:var(--green);color:white;box-shadow:0 3px 8px #2975630c}.primary:hover{background:var(--green-dark)}.secondary{background:#f3f5ed;border:1px solid #dfe5d6;color:var(--green)}.video-footnote{font-size:9px;color:#89937e;margin-top:12px}.video-shell iframe,.video-shell video,#online-player{width:100%;height:100%;position:absolute;inset:0;border:0}.player-toolbar{display:flex;align-items:center;gap:14px;padding:13px 0 0;font-size:10px;flex-wrap:wrap}.control-button{font-size:10px;padding:7px 9px;background:#fff;border:1px solid var(--line);border-radius:6px;white-space:nowrap}.loop-control{display:flex;align-items:center;gap:4px;color:#78816f;white-space:nowrap}input[type=checkbox]{accent-color:var(--green);width:13px;height:13px;margin:0}.speed-control{display:flex;align-items:center;gap:5px;color:#78816f}.speed-control select{border:1px solid var(--line);background:#fff;border-radius:5px;padding:4px 3px;font-size:10px;color:var(--ink)}.player-toolbar>.text-button{margin-left:auto;font-size:10px}.player-message{font-size:10px;color:#8e9387;margin:3px 0 18px;min-height:18px}.cue-panel{background:#f3f1e6;border:1px solid #eae6d6;border-radius:11px;padding:17px 19px}.cue-heading{display:flex;justify-content:space-between;align-items:center}.cue-heading .section-label{font-size:10px;color:#9e915f;letter-spacing:1px}.cue-heading .text-button{font-size:10px;color:#8d835d;padding:0}.cue-panel p{font-size:16px;line-height:1.9;color:#6c6847;font-weight:550;margin:10px 0 8px}.cue-panel 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var(--line);border-radius:13px;padding:20px 19px}.parent-title{display:flex;align-items:center;gap:8px}.parent-title>span:first-child{font-size:25px;color:#bd9f5a}.parent-title h3{font-size:13px;margin:0;font-weight:650}.small-pill{font-size:8px;background:#f3f3eb;padding:4px 6px;border-radius:4px;color:#989b89;margin-left:auto;white-space:nowrap}.parent-intro{font-size:11px;line-height:1.9;color:#8a9280;margin:14px 0 20px;padding-bottom:20px;border-bottom:1px solid var(--line)}.tip-block{margin:0 0 21px}.tip-label{font-size:10px;font-weight:600;color:#7e8c72;display:flex;gap:6px;align-items:center}.tip-label:before{content:'';width:4px;height:4px;border-radius:50%;background:#94a67d}.tip-block p{font-size:11px;color:#939788;line-height:1.9;margin:8px 0 0}.praise-block{background:#f7f4e9;border-radius:9px;padding:14px}.praise-block span{font-size:9px;color:#a8966c}.praise-block p{font-size:12px;color:#8e7c51;line-height:1.9;margin:8px 0 0}.parent-details{font-size:10px;color:#8a9280;margin:20px 0 7px}.parent-details summary{cursor:pointer;padding:7px 0}.parent-details ol{padding-left:17px;line-height:2}.parent-rail>.text-button{font-size:10px;margin-bottom:12px}.print-button{width:100%;border:1px solid #e2e6da;border-radius:7px;padding:11px;font-size:11px;color:#7b8d70}.gentle-note{font-size:9px;text-align:center;color:#a7aa9c;margin:15px 0 0;line-height:1.9}.record-card{border:1px solid #e0e7da;border-radius:13px;background:#f0f4eb;padding:21px;margin-top:26px;position:relative}.record-card h3{font-size:14px;margin:0 0 5px}.record-card p{font-size:10px;color:#8a9480;margin:0}.record-icon{position:absolute;right:22px;top:15px;font-size:32px;color:#d3b35d}.status-options{display:flex;gap:7px;margin:17px 0}.status-options button{flex:1;border:1px solid #dce3d4;border-radius:7px;background:#fff;padding:11px 5px;font-size:10px;white-space:nowrap}.status-options button[aria-pressed=true]{border-color:var(--green);background:#e3ecdc;box-shadow:0 0 0 1px var(--green)}.record-fields{display:flex;gap:12px;margin-bottom:16px}.record-fields label{font-size:10px;color:#7f8a76}.record-fields label span{color:#a5ab9c;margin-left:4px}.record-fields input{display:block;border:1px solid #dfe5d7;background:#fff;border-radius:6px;padding:10px;font-size:10px;width:70px;margin-top:6px;color:var(--ink)}.note-field{flex:1}.note-field input{width:100%}.record-card>.button{font-size:11px;padding:10px 15px;min-height:38px}#save-message{font-size:10px;color:var(--green);margin-left:10px;line-height:1.8;display:inline-block}.lesson-pagination{display:flex;align-items:center;justify-content:space-between;margin:18px 0 8px}.lesson-pagination span{font-size:10px;color:#9da492}.lesson-pagination button{font-size:11px}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:45px;padding:23px 0 30px;font-size:10px;color:#a2a596}.footer-brand{font-size:12px;text-decoration:none;font-weight:600}.footer-brand span{font-size:10px;color:#989e8e;font-weight:400}footer .text-button{font-size:10px}.solo-panel{text-align:center;border:1px dashed #c5d6b9;border-radius:13px;background:#eef4e6;padding:45px 25px;min-height:285px}.solo-panel>span{font-size:38px}.solo-panel h3{font-size:22px}.solo-panel p{font-size:13px;color:#7b8c6d;line-height:1.9;margin:14px 0 22px}.solo-panel .button{font-size:11px}dialog{border:1px solid #dce3d7;border-radius:20px;padding:28px;width:min(620px,calc(100% - 28px));max-height:85vh;color:var(--ink);background:var(--paper);box-shadow:0 20px 100px #17291b30}dialog::backdrop{background:#18392a66;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:19px}.dialog-heading h2{font-size:22px;margin:0}.dialog-heading .eyebrow{display:block;margin-bottom:8px;font-size:10px}.close-button{border:1px solid #e0e4d8;background:white;border-radius:50%;width:32px;height:32px;flex-shrink:0;font-size:21px;color:#8b9780;display:grid;place-items:center}dialog p{font-size:13px;color:#7f8a76}dialog .muted{font-size:11px}.dialog-footnote{border-top:1px solid var(--line);padding-top:15px;font-size:10px!important;line-height:1.9}.dialog-lead{font-weight:600;color:var(--green)}.guide-content ol{padding-left:22px}.guide-content li{font-size:13px;line-height:2;color:#78856f;margin-bottom:15px}.guide-content strong{color:var(--ink)}.history-row{background:white;border:1px solid var(--line);border-radius:10px;padding:14px;margin:10px 0}.history-row header{display:flex;justify-content:space-between;align-items:center;gap:12px}.history-row strong{font-size:12px}.history-row span{font-size:10px;color:#7b8e6e}.history-row p{font-size:11px;margin:7px 0 0;overflow-wrap:anywhere}.history-row small{display:block;font-size:10px;color:#9ba18e;margin-top:6px}.empty-state{text-align:center;padding:30px 15px;font-size:13px;color:#8c997e}.file-picker{display:block;background:#eef3e8;border:1px dashed #bbccb1;border-radius:10px;padding:17px;font-size:12px;color:var(--green)}.file-picker input{display:block;margin-top:12px;font-size:11px;width:100%}.field-label{display:block;font-size:12px;color:#7f8a76;margin:20px 0}.field-label select{display:block;width:100%;background:white;border:1px solid var(--line);border-radius:6px;padding:10px;font-size:12px;margin-top:7px;color:var(--ink)}#range-form{border-top:1px solid var(--line);padding-top:14px}#range-form h3{font-size:14px}#range-form>p{font-size:11px}.time-fields{display:flex;gap:15px}.time-fields label{flex:1;font-size:12px;color:#7f8a76}.time-fields input{display:block;width:100%;padding:11px;border:1px solid #dce3d3;border-radius:7px;margin-top:6px;background:#fff}.dialog-actions{display:flex;gap:9px;flex-wrap:wrap}#range-error{color:#aa5c40}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);border-radius:10px;background:var(--ink);color:white;font-size:12px;padding:12px 20px;box-shadow:0 4px 30px #263e3720;z-index:20;max-width:90%;display:none}#toast.visible{display:block}#print-area{display:none}input::placeholder{color:#b0b4a7}input,select{min-width:0}summary::marker{color:#a4b294}
@media(min-width:1440px){.practice-layout{grid-template-columns:230px minmax(0,1fr) 270px;gap:36px}.video-cover{padding:30px}.video-cover strong{font-size:20px}.lesson-text strong{font-size:13px}.tip-block p{font-size:12px}.hero{padding-bottom:30px}}
@media(max-width:1120px){.topbar{padding:0 28px}.topbar nav{margin-left:15px}main{padding:0 28px}.practice-layout{grid-template-columns:190px minmax(0,1fr);gap:24px}.parent-rail{grid-column:2}.hero-art{margin-right:30px}.today-progress .progress-track{width:75px}.parent-rail{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}.parent-title,.parent-intro,.parent-details,.gentle-note,.parent-rail>.text-button,.parent-rail>.print-button{grid-column:1/-1}.parent-intro{margin:0 0 4px;padding-bottom:12px}.tip-block{margin-bottom:8px}.praise-block{grid-column:1/-1}.parent-details{margin:0}.parent-rail>.text-button{margin:0}.gentle-note{margin-top:0}}
@media(max-width:720px){.topbar{height:74px;padding:0 20px;gap:16px}.brand{font-size:17px;letter-spacing:1px}.brand img{width:33px;height:33px}.brand small{font-size:7px}.topbar nav{margin-left:auto;gap:17px;font-size:12px}.topbar nav button{font-size:11px}.topbar nav>a{display:none}.family-label{display:none}main{padding:0 20px}.hero{padding:28px 0 22px;min-height:220px}.hero-art{width:160px;height:175px;margin:0 -10px 0 0;flex-shrink:0}.hero-art svg{width:185px;height:175px;left:-10px}.hero-copy{position:relative;z-index:1}.hero h1{font-size:27px;letter-spacing:0;margin:11px 0}.hero .eyebrow{font-size:9px;letter-spacing:1px}.hero p{font-size:11px}.hero-tags{gap:5px;flex-wrap:wrap;margin-top:17px}.hero-tags span{font-size:8px;padding:4px 6px}.bubble{right:0;top:2px;font-size:8px;padding:7px 8px}.art-stamp{display:none}.art-spark.one{left:5px;top:40px;font-size:20px}.art-spark.two{display:none}.today-strip{padding:14px;gap:10px;flex-wrap:wrap;margin-bottom:26px}.today-strip>div:first-child{flex-basis:70%}.today-strip strong{font-size:12px}.today-strip small{font-size:9px}.sun-icon{font-size:25px}.today-progress{order:3;width:100%;gap:10px}.today-progress .progress-track{flex:1}.today-progress>span{font-size:9px}.today-strip>.text-button{font-size:10px;margin-left:auto}.practice-layout{display:flex;flex-direction:column;gap:24px}.lesson-rail{width:100%}.lesson-rail>.section-label{margin-bottom:12px;font-size:11px}#lesson-list{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.lesson-item{display:block;padding:10px 8px;margin:0;min-height:125px}.lesson-number{width:24px;height:24px;min-width:0;font-size:10px;border-radius:7px;margin-bottom:8px}.lesson-text strong{font-size:10px;line-height:1.6}.lesson-text small{font-size:8px;line-height:1.6}.lesson-status{font-size:8px;margin-top:6px}.whole-button{padding:9px 12px;margin-top:10px}.whole-button small{display:inline;margin-left:10px;font-size:9px}.whole-button>span:first-child{font-size:18px}.rail-note{display:none}.lesson-main{width:100%}.lesson-heading{margin-bottom:16px}h2{font-size:22px}.count-badge{font-size:9px}.parent-rail{width:100%;display:block}.parent-intro br{display:none}.parent-intro{padding:12px 0;margin-bottom:16px}.tip-block{margin-bottom:20px}.tip-block p{font-size:12px}.parent-title h3{font-size:14px}.praise-block p{font-size:13px}.parent-details{margin-top:16px}.parent-rail>.text-button{display:block;padding:15px 0}.gentle-note{margin-top:12px}.steps-heading span{font-size:8px}.record-card{padding:18px}.record-fields{gap:9px}.record-card h3{font-size:14px}.record-card p{font-size:9px}.record-icon{font-size:25px;right:15px}.status-options{gap:6px}.status-options button{font-size:10px;padding:12px 3px}.player-toolbar{gap:10px}.player-toolbar>.text-button{font-size:9px}.cue-panel p{font-size:16px}.step-copy small{font-size:10px}.player-message{font-size:9px}.video-cover strong{font-size:15px}.video-emblem{width:40px;height:40px;font-size:17px;margin-bottom:8px}.video-cover #clip-description{margin:5px 0 10px;font-size:10px}.video-cover .button{padding:10px 14px;font-size:10px;min-height:36px}.video-footnote{font-size:8px;margin-top:9px}footer{margin-top:30px;padding:20px 0;flex-wrap:wrap;gap:10px}.footer-brand{flex-basis:100%}footer>span{font-size:9px}footer>.text-button{margin-left:auto;font-size:9px}dialog{padding:22px}.dialog-heading h2{font-size:19px}.solo-panel{min-height:230px;padding:30px 20px}}
@media(max-width:400px){main{padding:0 15px}.topbar{padding:0 15px}.topbar nav{gap:13px}.hero-art{width:120px}.hero-art svg{width:155px;left:-18px}.hero h1{font-size:24px}.hero p{font-size:10px}.hero-tags span:last-child{display:none}.bubble{font-size:7px;right:-5px}.lesson-item{padding:8px 6px}.lesson-text strong{font-size:9px}.video-cover{padding:12px}.video-emblem{display:none}.player-toolbar{gap:8px}.player-toolbar>.text-button{margin-left:0}.record-fields input{font-size:9px}.note-field input{padding:10px 6px}.record-card{padding:15px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{body>*{display:none!important}main,header,dialog,#toast{display:none!important}#print-area{display:block!important;background:white;color:#111;font-size:12px}.print-sheet{page-break-after:always;padding:20px}.print-sheet:last-child{page-break-after:auto}.print-sheet h1{font-size:26px}.print-sheet h2{font-size:20px}.print-sheet li{line-height:2;margin-bottom:8px}.print-sheet p{line-height:1.9}.print-sheet .print-chant{padding:15px;border:1px solid #aaa;font-size:18px}.print-source{font-size:9px;overflow-wrap:anywhere}.print-check{padding:15px 0;border-top:1px solid #aaa}@page{size:A4;margin:18mm}}

/* The entire cover is one native button, with one keyboard focus target. */
.video-cover{border:0;width:100%;color:inherit;font:inherit;cursor:pointer;appearance:none;margin:0}
.video-cover #clip-description{display:block;line-height:1.8}
.video-cover:hover:not(:disabled) .video-emblem{background:#fff;transform:scale(1.07)}
.video-cover .video-emblem{transition:transform .16s,background .16s}
.video-cover:focus-visible{outline:3px solid var(--green);outline-offset:-5px}
.video-cover:disabled{opacity:1;cursor:wait}
@media(prefers-reduced-motion:reduce){.video-cover .video-emblem{transition:none}}