:root{--ink:#193e49;--muted:#586e77;--teal:#08786f;--teal-dark:#065d56;--mint:#e7f3ef;--line:#dce6e8;--paper:#fff;--background:#f2f6f7;--ghost:#8a999f;--error:#b43d3d;--display:'Avenir Next','Trebuchet MS',sans-serif;--body:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--background);font-family:var(--body);font-synthesis:none}
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36px;height:100%;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-family:var(--display);font-size:20px;font-weight:600;color:var(--ink);letter-spacing:-.5px}.brand-mark{display:inline-flex;position:relative;align-items:center;justify-content:center;width:36px;height:38px;background:var(--teal);color:white;border-radius:11px 11px 11px 3px;font-size:35px;line-height:1;padding-bottom:5px}.brand-mark span{position:absolute;right:6px;top:4px;font-size:28px}.header-label{border-left:1px solid var(--line);padding-left:28px;font-size:14px;color:var(--muted)}.header-inner>.quiet{margin-left:auto}.quiet{background:transparent;border-color:transparent;color:var(--muted);font-size:13px}.quiet:hover{color:var(--teal)}.shell{max-width:1296px;margin:auto;padding:26px 36px 32px}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}.intro p{font-size:15px;color:var(--muted);margin-top:5px}.local-label{border:1px solid #cddfdf;color:var(--muted);border-radius:30px;padding:6px 11px;font-size:12px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 282px;gap:24px;align-items:start}.lesson-main{min-width:0}.video-card,.writing-card,.progress-card,.sentences-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden}.video-heading{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;gap:10px}.video-heading p{font-size:12px;color:var(--muted);margin-top:5px}.license-chip{display:flex;gap:3px;align-items:center;border:1px solid var(--line);border-radius:7px;padding:3px 6px;flex-shrink:0;text-decoration:none;color:var(--ink);font-size:11px}.license-chip svg{fill:none;stroke:currentColor;stroke-width:1.8}.license-chip svg text{stroke:none;fill:currentColor;font:700 12px Arial}.video-wrap{position:relative;aspect-ratio:16/9;min-height:200px;background:#153d4b}video{display:block;width:100%;height:100%;background:#0b2027;object-fit:contain;position:absolute;inset:0}.video-cover{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#153d4b;color:white;overflow:hidden}.cover-topic{font:12px var(--display);letter-spacing:5px;color:#a1d8d0;z-index:1;margin-bottom:13px}.video-cover h3{font-size:clamp(21px,2.9vw,33px);font-weight:500;letter-spacing:-.7px;z-index:1}.video-cover p{font-size:13px;color:#bfd0d5;margin-top:9px;z-index:1}.video-cover small{margin-top:18px;color:#a3bbc2;font-size:11px;z-index:1}.start-button{z-index:1;border-color:#d0eee5;background:#e2f4ec;color:#144d48;margin-top:25px;font-weight:500;padding:13px 20px;min-height:47px}.start-button span{font-size:12px;margin-right:7px}.cover-orbit{width:370px;height:370px;border:1px solid #39616c;border-radius:50%;position:absolute;right:-160px;bottom:-205px}.cover-orbit:before,.cover-orbit:after{content:'';position:absolute;inset:-40px;border:1px solid #2c535f;border-radius:50%}.cover-orbit:after{inset:-85px;border-color:#244b58}.playback{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:12px 18px;gap:14px}.playback-buttons{display:flex;gap:6px;align-items:center}.playback button{border-color:transparent;padding:7px 9px;font-size:13px}.playback button span{font-size:20px;vertical-align:-1px;margin-right:4px}select{font-size:13px;padding:7px 9px;background:#f5f8f8;border-color:transparent}.switch-label{display:flex;gap:8px;align-items:center;font-size:12px;white-space:nowrap;cursor:pointer}.switch-label 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12px;cursor:text}.phrase{white-space:pre-wrap;font:inherit;line-height:inherit;letter-spacing:inherit;color:var(--ghost);min-height:90px;overflow-wrap:anywhere;pointer-events:none}.phrase span{border-radius:1px}.phrase .accepted{color:var(--ink)}.phrase .cursor{box-shadow:-2px 0 var(--teal)}.typing-surface:not(:focus-within) .phrase .cursor{box-shadow:none}.phrase .wrong{background:#fce8e5;color:var(--error)}.phrase.masked .pending{color:transparent;border-bottom:2px solid #b7c5cb}.phrase.masked .space{border-bottom:0}.answer-wrap{position:relative}.typing-surface textarea{position:absolute;inset:0;z-index:1;width:100%;height:100%;min-height:0;resize:none;overflow:hidden;margin:0;padding:0;border:0;border-radius:0;background:transparent;font:inherit;line-height:inherit;letter-spacing:inherit;color:transparent;caret-color:transparent;-webkit-text-fill-color:transparent}.typing-surface textarea::selection{background:#26867c25;color:transparent}.typing-surface:not(:focus-within) .phrase .current{box-shadow:none}.typing-meta{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:10px}.phrase .read{text-decoration:underline;text-decoration-color:var(--teal);text-decoration-thickness:2px;text-underline-offset:.22em}.playback-settings{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px}.source-button{font-size:18px!important;min-width:32px}#credits .license-chip{width:max-content;margin-top:18px}.input-meta{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:10px;color:var(--muted);margin-top:10px}.input-meta p{line-height:1.5}.input-meta label{display:flex;gap:4px;align-items:center;cursor:pointer}.input-meta input{accent-color:var(--teal);margin:0}.special-keys{display:flex;gap:6px;margin-top:15px}.special-keys button{min-width:33px;min-height:33px;padding:5px 8px;background:#f5f8f9;border-color:transparent;font-size:13px}.special-keys 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h2{font-size:15px}.progress-heading>span{font-size:13px;color:var(--teal);font-weight:600;font-variant-numeric:tabular-nums}.progress-track{height:5px;background:#e9eff0;border-radius:5px;margin-top:18px;overflow:hidden}.progress-track>div{height:100%;background:var(--teal);transition:width .2s;width:0}.progress-card>p{font-size:12px;color:var(--muted);margin-top:10px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:20px;border-top:1px solid var(--line);padding-top:20px;margin-top:20px}.stats>div{display:flex;flex-direction:column;gap:4px}.stats strong{font-family:var(--display);font-size:25px;font-weight:500}.stats span{font-size:10px;color:var(--muted)}.progress-card>.save-status{font-size:10px;margin-top:19px;color:#607c77}.sentence-list-head{display:flex;align-items:center;justify-content:space-between;padding:19px 20px 13px}.sentence-list-head h2{font-size:15px}.sentence-list-head>span{font-size:11px;color:var(--muted)}#sentence-list{margin:0;padding:0 10px 10px;list-style:none;max-height:346px;overflow:auto;scrollbar-width:thin}#sentence-list li+li{margin-top:3px}.sentence-item{display:grid;grid-template-columns:28px 1fr auto;gap:10px;align-items:center;width:100%;padding:11px 10px;text-align:left;border:1px solid transparent;background:transparent;min-height:54px}.sentence-item:hover{background:#f2f7f7}.sentence-item[aria-current=true]{background:#eaf4f1;border-color:#c7e4da}.sentence-index{display:flex;align-items:center;justify-content:center;border:1px solid #dbe5e7;border-radius:50%;height:26px;width:26px;color:var(--muted);font-size:10px}.sentence-item[aria-current=true] .sentence-index,.sentence-item.done .sentence-index{color:var(--teal);border-color:#a5d3c6;background:#fff}.sentence-item>span:nth-child(2){font-size:12px;line-height:1.4}.sentence-item small{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}.tip{display:flex;gap:12px;padding:0 9px;color:var(--muted)}.tip>span{font-size:21px;color:#729193}.tip p{font-size:11px;line-height:1.9}.tip strong{font-weight:500;color:var(--ink)}kbd{font-size:10px;font-family:inherit;border:1px solid #ccd9dc;padding:1px 3px;border-radius:3px;background:#fff}.reset-button{align-self:center;border-color:transparent;background:transparent;color:var(--muted);font-size:11px;min-height:32px;padding:4px 8px}.credits{margin-top:26px;border-top:1px solid var(--line);padding-top:17px;color:var(--muted);font-size:11px}.credits summary{cursor:pointer;display:flex;justify-content:space-between;gap:10px;list-style:none;min-height:32px}.credits summary::-webkit-details-marker{display:none}.credits summary>span:first-child{color:var(--teal)}#credits-body{max-width:900px;line-height:1.8;padding:10px 0}#credits-body p+p{margin-top:9px}footer{display:flex;justify-content:space-between;gap:12px;padding:24px 0 25px;color:#596f77;font-size:10px}.alert,.media-error{padding:20px;background:#fff4ee;color:#913a1c;border-radius:8px}.media-error{font-size:13px;border-radius:0}.media-error p{margin-bottom:10px}.media-error a{margin-left:12px}.summary{text-align:center;padding:45px 25px;border:1px solid #aacec0;border-radius:14px;background:#edf8f1;margin-top:20px}.summary>span{display:block;color:var(--teal);font-size:40px;margin-bottom:12px}.summary p{font-size:14px;margin:13px auto 22px;max-width:500px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:17px;padding:32px;color:var(--ink);max-width:490px;width:calc(100% - 32px);box-shadow:0 24px 80px #153d4b25}dialog::backdrop{background:#122e3a70}dialog h2{font-size:22px;padding-right:15px}dialog ol{padding-left:20px;margin:25px 0;font-size:14px;line-height:1.7}dialog li+li{margin-top:16px}dialog p{font-size:13px;color:var(--muted);margin:18px 0 22px}.dialog-close{position:absolute;right:10px;top:10px;border:0;min-height:30px;font-size:22px;padding:3px 10px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px}
@media(min-width:1500px){.shell{padding-top:40px}}
@media(max-width:1050px){.workspace{grid-template-columns:minmax(0,1fr) 245px;gap:18px}.shell,.header-inner{padding-left:24px;padding-right:24px}.writing-card{padding:20px}.writing-actions>.quiet{font-size:11px}.primary{padding:9px 11px}.cover-topic{margin-bottom:8px}.start-button{margin-top:15px}.video-cover small{margin-top:12px}.video-heading{padding:17px}.header-label{display:none}}
@media(max-width:800px){.workspace{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tip{display:none}.reset-button{justify-self:end}.sentences-card{grid-column:2;grid-row:1 / span 2}#sentence-list{max-height:205px}.header-inner{padding:0 20px}.shell{padding:25px 20px 0}.intro{margin-bottom:22px}.intro h1{font-size:26px}.typing-surface{font-size:26px}.phrase{min-height:70px}.writing-card{margin-top:16px}.local-label{display:none}.video-wrap{aspect-ratio:16/9}.video-cover h3{font-size:28px}.video-cover small{font-size:10px}}
@media(max-width:480px){.site-header{height:65px}.header-inner{padding:0 16px;gap:8px}.brand{font-size:17px;gap:8px}.brand-mark{width:31px;height:34px;font-size:31px}.header-inner>.quiet{font-size:11px;padding:6px}.shell{padding:23px 14px 0}.intro h1{font-size:24px;letter-spacing:-.7px}.intro p{font-size:13px}.intro{margin-bottom:20px}.video-heading{padding:16px 15px}.video-heading h2{font-size:16px}.video-heading p{font-size:10px}.license-chip{padding:2px 4px}.license-chip svg{width:51px}.video-wrap{min-height:200px;aspect-ratio:16/10}.cover-topic{font-size:10px;letter-spacing:4px;margin-bottom:8px}.video-cover h3{font-size:24px}.video-cover p{font-size:11px;margin-top:5px}.start-button{margin-top:17px;font-size:13px;padding:10px 14px;min-height:40px}.video-cover small{margin-top:13px}.playback{padding:10px 12px;gap:10px}.playback-settings{width:100%;gap:14px;padding:3px 3px 5px}.playback button{font-size:11px;padding:7px 5px}.playback button span{margin-right:1px}.playback-buttons{gap:1px}select{font-size:11px;padding:7px 4px}.switch-label{font-size:11px;gap:8px}.switch{width:30px;height:18px}.switch:after{width:12px;height:12px}.switch-label input:checked+.switch:after{transform:translateX(12px)}.writing-card{padding:19px 16px}.writing-head h2{font-size:17px}.writing-head .quiet{font-size:10px;padding:5px}.typing-surface{font-size:25px;line-height:1.6;margin-top:21px;margin-bottom:12px}.phrase{min-height:90px}.input-meta{font-size:10px;gap:9px}.special-keys{gap:6px;margin-top:15px}.special-keys button{min-width:34px;min-height:36px}.writing-actions{padding-top:13px}.writing-actions>.quiet{font-size:11px;max-width:85px;text-align:left}.writing-actions>div{gap:6px}.writing-actions .primary{font-size:11px;padding:9px 11px}.primary span{margin-left:5px}.writing-actions #previous{padding:9px 12px}.feedback{font-size:12px;min-height:52px}.sidebar{grid-template-columns:1fr}.sentences-card{grid-column:auto;grid-row:auto}.progress-card{padding:18px}.progress-heading h2{font-size:15px}.stats{padding-top:14px;margin-top:15px}.progress-card .save-status{margin-top:12px}.reset-button{justify-self:center}.credits summary{font-size:10px;line-height:1.5}footer{font-size:9px;gap:8px}footer>span:last-child{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

.library h2{font-size:23px;margin:5px 0 22px}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,220px));gap:18px}.lesson-choice-card{border:1px solid var(--line);border-radius:12px;background:white;overflow:hidden}.lesson-choice{display:flex;flex-direction:column;align-items:stretch;width:100%;padding:0;border:0;border-radius:0;text-align:left;background:white}.lesson-choice:hover{background:#f6fbf9}.choice-poster{display:block;aspect-ratio:16/10;background:#184c5b;overflow:hidden}.choice-poster img{display:block;width:100%;height:100%;object-fit:cover}.lesson-choice strong{font-size:15px;font-weight:500;padding:13px 13px 0;line-height:1.5}.choice-meta{font-size:11px;color:var(--muted);padding:6px 13px 0}.choice-action{font-size:11px;color:var(--teal);padding:12px 13px 13px}.choice-source{display:block;border:0;border-top:1px solid var(--line);border-radius:0;background:#f9fbfb;min-height:35px;width:100%;font-size:10px;color:var(--muted);padding:7px 12px;text-align:left}.lesson-nav{display:flex;align-items:center;gap:18px;margin-bottom:16px;color:var(--muted);font-size:13px}.lesson-nav button{padding-left:0}.library #library-loading{font-size:13px;color:var(--muted);margin-top:20px}#typing-caret-end{display:inline-block;width:0;height:1em;vertical-align:-.13em}.phrase .typed.space.wrong{position:relative}.phrase .typed.space.wrong:after{position:absolute;inset:0;content:'·';text-align:center;color:var(--error);pointer-events:none}@media(max-width:480px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.library h2{font-size:21px;margin-bottom:18px}.lesson-choice strong{font-size:13px;padding:10px 10px 0;min-height:48px}.choice-meta,.choice-action{padding-left:10px;padding-right:10px}.choice-action{font-size:10px}.lesson-nav{font-size:12px;gap:12px;margin-bottom:10px}.typing-meta{font-size:9px;flex-wrap:wrap}}

.phrase #typing-caret-end.cursor{border-left:2px solid var(--teal);margin-left:-1px}.typing-surface:not(:focus-within) .phrase #typing-caret-end.cursor{border-color:transparent}