:root{--paper:#f6f3e9;--paper2:#eeeadf;--ink:#243c34;--green:#213e35;--muted:#6c746a;--line:#d6d9cb;--accent:#a34532;--accent-soft:#8c5947;--gold:#82734a;--serif:"Noto Serif SC","Songti SC","STZhongsong","SimSun",serif;--sans:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;--gutter:clamp(22px,5vw,80px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:155px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}button:disabled{cursor:wait}img{max-width:100%;display:block}figure{margin:0}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--serif);font-weight:500}svg{width:23px;height:23px;flex:none}button svg,a svg{vertical-align:middle}[hidden]{display:none!important}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:5px}::selection{background:#cad5c5}.wrap{width:min(1280px,100% - var(--gutter)*2);margin-inline:auto}.skip{position:fixed;top:-80px;left:20px;z-index:200;padding:12px 20px;background:var(--green);color:white}.skip:focus{top:12px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,243,233,.97);border-bottom:1px solid var(--line)}.header-inner{width:min(1440px,100% - var(--gutter)*2);height:94px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:13px;font:600 24px/1.4 var(--serif);white-space:nowrap}.taiji{font:48px/1 Georgia,serif;display:block}.brand small{display:block;font:10px/1.8 var(--sans);letter-spacing:2px;margin-top:3px;color:var(--muted)}#main-nav{display:flex;gap:28px;align-items:center;font-size:14px}#main-nav a{min-height:44px;display:grid;align-items:center;position:relative}#main-nav a:hover,#main-nav a[aria-current]{color:var(--accent)}#main-nav a[aria-current]:after{content:"";position:absolute;bottom:0;left:42%;width:5px;height:5px;border-radius:50%;background:var(--accent)}.header-cta{display:flex;align-items:center;gap:16px;border:1px solid var(--green);padding:9px 18px;font-size:13px;white-space:nowrap}.header-cta:hover{background:var(--green);color:var(--paper)}.menu-toggle{display:none;border:1px solid var(--line);background:none;width:44px;height:44px;align-items:center;justify-content:center}
.eyebrow{font:11px/1.7 var(--sans);letter-spacing:2.5px;color:var(--accent)}.eyebrow>span{display:inline-block;width:20px;height:1px;background:currentColor;vertical-align:middle;margin-right:8px}.home-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(40px,6vw,100px);align-items:center;padding-block:94px 92px}.hero-copy h1{font-size:clamp(48px,5.4vw,82px);line-height:1.3;letter-spacing:2px;margin:25px 0}.hero-copy h1>span{color:var(--accent)}.hero-summary{font-size:15px;line-height:2.15;color:var(--muted)}.hero-actions{display:flex;gap:27px;align-items:center;margin-top:36px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;min-height:48px;padding:12px 23px;border:1px solid var(--green);background:transparent;color:var(--green);font-size:13px;transition:background .2s,transform .2s}.button.primary{background:var(--green);color:var(--paper)}.button:hover{background:#e1e6d8;transform:translateY(-2px)}.button.primary:hover{background:#36564a}.button:active{transform:translateY(1px)}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:13px;min-height:44px}.text-link:hover{color:var(--accent)}.hero-note{display:flex;gap:24px;border-top:1px solid var(--line);margin-top:43px;padding-top:18px;font:11px var(--sans);letter-spacing:3px;color:var(--muted)}.hero-note span+span{border-left:1px solid var(--line);padding-left:24px}.continue-link{display:block;font-size:13px;color:var(--accent);margin-top:18px}.hero-art{position:relative;padding:34px 0 24px 18px}.hero-ring{position:absolute;inset:-24px 5px -24px -15px;border:1px solid var(--line);border-radius:50%;pointer-events:none}.hero-ring:after{content:"";position:absolute;inset:17px;border:1px solid var(--line);border-radius:50%}.hero-frame{position:relative;overflow:hidden;background:var(--green);color:var(--paper)}.hero-frame>img{width:100%;aspect-ratio:1.48;object-fit:cover}.hero-frame figcaption{padding:25px 32px 28px}.hero-frame figcaption>span{font-size:10px;letter-spacing:3px;color:#becab8}.hero-frame figcaption strong{display:block;font:24px/1.6 var(--serif);margin:8px 0 6px;font-weight:500}.hero-frame figcaption small{font-size:11px;color:#becab8}.hero-play{position:absolute;right:22px;bottom:170px;display:grid;place-items:center;width:55px;height:55px;border:1px solid white;border-radius:50%;color:white;background:#213e35b0}.hero-play:hover{background:var(--accent)}.vertical-note{position:absolute;right:-28px;top:40px;writing-mode:vertical-rl;letter-spacing:8px;font:12px var(--serif);color:var(--muted)}.red-seal{position:absolute;left:-5px;bottom:4px;padding:9px 8px;background:var(--accent);color:var(--paper);font:17px/1.3 var(--serif);border:3px double var(--paper);transform:rotate(-5deg)}
.chapter-strip{border-block:1px solid var(--line);background:var(--paper2)}.strip-inner{display:flex;justify-content:space-between;align-items:center;gap:22px;padding-block:26px;font-size:13px}.strip-inner>span{font-family:var(--serif);font-size:16px}.strip-inner small{display:block;font:8px/1.8 var(--sans);letter-spacing:1.5px;color:var(--muted)}.strip-inner a{min-height:44px;display:flex;align-items:center}.strip-inner a:hover{color:var(--accent)}.home-section{padding-block:100px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:45px}.section-heading h2{font-size:clamp(28px,3.1vw,42px);line-height:1.5;margin-top:12px}.section-heading>p{font-size:13px;line-height:2;color:var(--muted)}.practice-grid{display:grid;grid-template-columns:1fr 1fr;column-gap:55px}.practice-link{display:flex;position:relative;gap:20px;align-items:flex-start;padding:30px 0;border-top:1px solid var(--line);overflow:hidden}.practice-index{font:11px/2 var(--sans);color:var(--accent);padding-top:4px}.practice-link h3{font-size:23px}.practice-link h3 small{font:11px var(--sans);margin-left:14px;color:var(--muted)}.practice-link p{font-size:12px;color:var(--muted);margin-top:7px;padding-right:32px}.practice-glyph{position:absolute;right:34px;top:10px;font:70px/1.4 var(--serif);opacity:.055}.practice-link .arrow{margin-left:auto;font-size:22px;padding-right:2px;transition:transform .2s}.practice-link:hover .arrow{transform:translate(3px,-3px);color:var(--accent)}.video-feature{padding-block:85px 95px;background:#e8ecdf}.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 28px}.video-card{display:block;width:100%;border:0;padding:0;text-align:left;background:transparent;min-width:0}.video-poster{position:relative;display:block;overflow:hidden;aspect-ratio:16/9;background:#cdd4c8}.video-poster img{width:100%;height:100%;object-fit:cover;transition:transform .35s}.video-card:hover .video-poster img{transform:scale(1.035)}.play-circle{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border:1px solid #ffffffc0;border-radius:50%;width:48px;height:48px;display:grid;place-items:center;background:#213e3599;color:#fff}.duration{position:absolute;right:10px;bottom:9px;color:white;background:#14251ecc;padding:2px 7px;font-size:10px}.video-name{display:block;font:18px/1.6 var(--serif);margin-top:17px}.video-caption{display:flex;justify-content:space-between;margin-top:9px;font-size:10px;letter-spacing:2px;color:var(--muted)}.about-preview{display:grid;grid-template-columns:1fr 1.15fr;gap:100px;align-items:center;padding-block:110px}.about-symbol{display:flex;align-items:center;justify-content:center;gap:36px;font:170px/1 Georgia,serif;color:var(--green)}.about-symbol span{font:17px/2.3 var(--serif);writing-mode:vertical-rl;letter-spacing:6px}.about-preview h2{font-size:36px;margin:15px 0 25px;line-height:1.6}.about-preview p:not(.eyebrow){font-size:14px;line-height:2.1;color:var(--muted)}.about-preview .text-link{margin-top:20px}.last-invite{display:flex;align-items:center;justify-content:space-between;gap:40px;border-top:1px solid var(--line);padding-block:55px 75px}.last-invite h2{font-size:30px;margin-top:10px}
.site-footer{background:var(--green);color:#eeeade;padding:50px var(--gutter) 25px}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:35px;max-width:1280px;margin:auto}.site-footer .brand{font-size:21px}.site-footer .brand small{color:#b6c1b1}.footer-links{display:flex;gap:23px;font-size:12px}.footer-links a{min-height:44px;display:flex;align-items:center}.footer-links a:hover{color:#dcc7a7}.footer-bottom{display:flex;justify-content:space-between;gap:25px;padding-top:25px;border-top:1px solid #486054;margin:35px auto 0;max-width:1280px;font-size:10px;line-height:2;color:#b6c1b1}.page-intro{padding-block:65px 45px}.page-intro h1{font-size:clamp(38px,4.1vw,62px);line-height:1.45;margin:16px 0 20px;letter-spacing:1px}.page-intro>p:not(.eyebrow){font-size:14px;color:var(--muted);max-width:750px;line-height:2}.videos-page,.questions-page,.about-page{padding-bottom:90px}.video-browse{display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--line);padding-bottom:25px}.filter-tabs{display:flex;gap:10px;flex-wrap:wrap}.filter-tabs button{min-height:44px;font-size:13px;background:none;border:1px solid transparent;padding:9px 15px}.filter-tabs button[aria-pressed=true]{background:var(--green);color:var(--paper)}.filter-tabs button:hover{border-color:var(--green)}.search-box{display:flex;align-items:center;gap:15px;background:#fff9;border:1px solid var(--line);padding:11px 18px;min-height:54px}.search-box input{min-width:0;width:100%;border:0;background:transparent;color:var(--ink);outline:0;font-size:14px;min-height:30px}.search-box input:focus-visible{outline:0}.search-box:focus-within{outline:2px solid var(--green);outline-offset:2px}.search-box>span{font-size:11px;color:var(--muted);white-space:nowrap}.compact-search{width:310px;flex-shrink:0}.result-count{font-size:11px;color:var(--muted);margin:25px 0}.full-library .video-card{padding-bottom:18px;border-bottom:1px solid var(--line)}.source-note{display:flex;justify-content:space-between;gap:25px;margin-top:50px;padding-top:25px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.source-note a{color:var(--accent)}.empty-state{text-align:center;padding:75px 20px}.empty-state h1{font-size:44px}.empty-state h2{font-size:28px}.empty-state p{margin:15px auto 25px;color:var(--muted);font-size:14px}.questions-page{max-width:1000px}.questions-page .search-box{margin-bottom:35px}.qa-item{border-top:1px solid var(--line)}.qa-item:last-child{border-bottom:1px solid var(--line)}.qa-item summary{display:grid;grid-template-columns:125px 1fr 24px;gap:25px;align-items:start;cursor:pointer;list-style:none;padding:23px 0;font:18px/1.8 var(--serif)}.qa-item summary::-webkit-details-marker{display:none}.qa-category{font:11px/2.7 var(--sans);color:var(--accent)}.qa-plus{font:23px/1.4 var(--sans);text-align:center}.qa-item[open] .qa-plus{transform:rotate(45deg)}.qa-answer{font-size:15px;line-height:2.1;color:#536257;margin:0 50px 28px 150px}.qa-answer p+p{margin-top:12px}.qa-answer b{color:var(--green);font-weight:600}
.reader-intro{padding-bottom:30px}.reader-toolbar{position:sticky;top:94px;z-index:35;background:var(--paper);border-block:1px solid var(--line);padding:10px 0;display:flex;justify-content:space-between;gap:15px}.reader-tools{display:flex;align-items:center;gap:10px;margin-left:auto;font-size:12px}.reader-tools>span{color:var(--muted);margin-right:5px}.reader-tools button,#toc-toggle{border:1px solid var(--line);background:transparent;padding:7px 12px;min-height:44px}.reader-tools button[aria-pressed=true]{background:var(--green);color:var(--paper);border-color:var(--green)}#toc-toggle{display:none;align-items:center;gap:10px;white-space:nowrap;font-size:12px}.reading-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:70px;padding-block:35px 85px}#reader-toc{position:sticky;top:170px;align-self:start;max-height:calc(100vh - 190px);overflow:auto;padding:10px 15px 20px 0;scrollbar-width:thin}.toc-label{font-size:10px;letter-spacing:3px;color:var(--muted);margin-bottom:15px}#reader-toc a{display:block;padding:9px 12px;font-size:12px;border-left:2px solid transparent;line-height:1.7}#reader-toc a:hover,#reader-toc a[aria-current]{background:#e8ecdf;color:var(--accent);border-left-color:var(--accent)}#reader-toc .toc-extra{margin-top:15px;border-top:1px solid var(--line);padding-top:20px}.reader{min-width:0;font-size:17px;line-height:1.95;max-width:900px}body[data-read-size=large] .reader{font-size:19px}body[data-read-size=larger] .reader{font-size:21px}.reading-note{font-size:12px;line-height:1.9;color:var(--muted);padding:18px 20px;border-left:2px solid var(--accent);background:var(--paper2)}.reading-end{border-top:1px solid var(--line);margin-top:70px;padding-top:40px}.reading-end h2{font-size:1.6em}.reading-end p{font-size:.85em;color:var(--muted);margin:10px 0 20px}.inline-video-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:25px}.inline-video .video-card{margin-top:10px}.reader .video-name{font-size:17px}.reader .video-caption{font-size:10px}.reader .video-poster img{height:100%;object-fit:cover;cursor:pointer}.reader section,.reader [id^=f-]{scroll-margin-top:175px}
.teacher-intro{display:grid;grid-template-columns:.9fr 1.2fr;gap:75px;align-items:start;padding:20px 0 70px}.teacher-intro figure{background:var(--paper2);padding:22px}.teacher-intro figure img{width:100%;height:auto;aspect-ratio:1.7;object-fit:contain;background:#fff}.teacher-intro figcaption{font-size:11px;color:var(--muted);margin-top:14px}.teacher-intro h2{font-size:35px;line-height:1.6;margin:15px 0 25px}.teacher-intro p:not(.eyebrow){font-size:14px;line-height:2.1;color:var(--muted);margin-top:15px}.about-story{border-block:1px solid var(--line);padding-block:55px}.about-story blockquote{font:clamp(25px,3vw,39px)/1.9 var(--serif);margin:20px 0 40px}.story-columns{display:grid;grid-template-columns:1fr 1fr;gap:75px}.story-columns h3{font-size:20px;margin-bottom:12px}.story-columns p{font-size:14px;color:var(--muted);line-height:2}.resource-list{display:grid;grid-template-columns:1fr 1fr;gap:0 70px;padding-block:70px}.resource-list>div{grid-row:span 3}.resource-list h2{font-size:29px;margin-top:15px}.resource-list>a{display:flex;align-items:center;gap:25px;padding:25px 0;border-bottom:1px solid var(--line)}.resource-list>a>span{font-size:11px;color:var(--accent)}.resource-list>a svg{margin-left:auto}.resource-list h3{font-size:20px}.resource-list p{font-size:12px;color:var(--muted);margin-top:6px}.contact-note{padding:35px;background:var(--paper2);border-left:2px solid var(--accent)}.contact-note h2{font-size:25px}.contact-note>p{font-size:14px;line-height:2;max-width:780px;margin-top:15px}.contact-note small{font-size:11px;color:var(--muted)}.contact-account{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.contact-account strong{font-family:var(--sans);letter-spacing:1px}.contact-account button{min-height:44px;padding:8px 16px}
dialog{padding:0;border:1px solid var(--line);color:var(--ink);background:var(--paper);width:min(850px,calc(100% - 32px));max-height:90vh;overflow:auto}dialog::backdrop{background:#10231ce6}#player-dialog video{display:block;width:100%;max-height:64vh;background:#0b130f}.player-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 20px}.player-top h2{font-size:18px}.player-top button,#image-dialog>button{display:grid;place-items:center;width:44px;height:44px;border:0;background:transparent}.player-controls{padding:15px 20px 20px;display:flex;justify-content:space-between;gap:25px;align-items:center;font-size:11px;color:var(--muted)}.player-controls label{white-space:nowrap}.player-controls select{margin-left:8px;border:1px solid var(--line);background:transparent;color:var(--ink);padding:6px;min-height:40px}.player-controls p{max-width:420px}#image-dialog{width:fit-content;max-width:calc(100vw - 30px);padding:18px}#image-dialog>button{margin-left:auto}#zoom-image{max-height:70vh;width:auto;margin:auto;object-fit:contain}#zoom-caption{font-size:12px;text-align:center;margin-top:15px;color:var(--muted)}#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);z-index:110;background:var(--green);color:var(--paper);padding:13px 22px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-width:90vw}#toast.visible{opacity:1;transform:translate(-50%,0)}
.hero-frame>img{object-fit:contain;background:#213e35}.hero-frame figcaption strong{letter-spacing:.02em}
@media(min-width:1500px){.home-hero{padding-block:110px 115px}}
@media(max-width:1150px){.header-inner{gap:18px}.brand{font-size:21px}.brand .taiji{font-size:40px}#main-nav{gap:20px}.header-cta{display:none}.home-hero{gap:55px}.hero-actions{gap:16px}.hero-art{padding-left:0}.hero-play{bottom:170px}.about-preview{gap:45px}.reading-layout{gap:38px;grid-template-columns:205px 1fr}}
@media(max-width:850px){:root{--gutter:28px}.header-inner{height:78px}.menu-toggle{display:flex;margin-left:auto}#main-nav{display:none;position:absolute;top:77px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 28px;box-shadow:0 12px 20px #213e3510}#main-nav.open{display:grid;gap:2px}#main-nav a{padding:8px 5px}#main-nav a[aria-current]:after{left:auto;right:10px;bottom:50%}.home-hero{padding-block:55px 60px;grid-template-columns:1fr 1fr;gap:35px}.hero-copy h1{font-size:48px}.hero-summary{font-size:13px}.hero-actions{align-items:flex-start;flex-direction:column;gap:8px}.hero-note{gap:14px;font-size:10px}.hero-note span+span{padding-left:14px}.hero-ring{inset:-5px -5px}.hero-frame figcaption{padding:20px}.hero-frame figcaption strong{font-size:19px}.vertical-note{display:none}.hero-play{right:14px;bottom:155px;width:44px;height:44px}.strip-inner{flex-wrap:wrap;justify-content:flex-start;gap:10px 25px}.strip-inner>span{width:100%;display:flex;align-items:center;gap:20px}.strip-inner small{display:inline}.strip-inner a{font-size:12px}.home-section{padding-block:65px}.section-heading{gap:25px;margin-bottom:32px}.section-heading h2{font-size:30px}.section-heading>p{font-size:12px}.practice-grid{column-gap:30px}.practice-link h3 small{display:block;margin:5px 0 0}.practice-link p{font-size:11px}.video-grid{gap:28px 18px}.video-name{font-size:16px}.video-feature{padding-block:60px}.about-preview{grid-template-columns:.65fr 1fr;padding-block:70px;gap:40px}.about-symbol{font-size:115px;gap:20px}.about-symbol span{font-size:13px}.about-preview h2{font-size:28px}.last-invite h2{font-size:24px}.footer-top{align-items:flex-start;flex-direction:column}.footer-bottom{flex-wrap:wrap;gap:10px 20px}.page-intro{padding-top:45px}.video-browse{flex-direction:column;align-items:stretch;gap:18px}.compact-search{width:100%}.reader-toolbar{top:78px}.reading-layout{display:block;padding-top:20px}#toc-toggle{display:flex}.reader-tools{gap:5px}.reader-tools>span{display:none}#print-guide{display:none}.reader-tools button{padding-inline:9px;font-size:11px}#reader-toc{display:none;position:sticky;top:143px;z-index:30;max-height:55vh;background:var(--paper);border-bottom:1px solid var(--line);padding:18px 12px;box-shadow:0 15px 25px #213e3515}#reader-toc.open{display:block}.reader{max-width:none}.teacher-intro{gap:35px}.teacher-intro h2{font-size:29px}.resource-list{gap:0 35px}.story-columns{gap:35px}}
@media(max-width:600px){:root{--gutter:22px}.brand{font-size:20px}.brand .taiji{font-size:39px}.brand small{font-size:8px;letter-spacing:1.4px}.header-inner{height:76px}#main-nav{top:75px}.home-hero{display:flex;flex-direction:column;gap:35px;align-items:stretch;padding-block:42px 45px}.eyebrow{font-size:10px;letter-spacing:1.8px}.hero-copy h1{font-size:48px;margin-block:20px;line-height:1.3;letter-spacing:1px}.hero-summary{font-size:13px;line-height:2}.desktop-br{display:none}.hero-actions{flex-direction:row;align-items:center;gap:18px;margin-top:28px}.hero-actions .button{gap:14px;padding-inline:18px;font-size:12px}.hero-actions .text-link{font-size:12px;gap:6px}.hero-note{margin-top:28px;padding-top:16px;gap:22px}.hero-note span+span{padding-left:22px}.hero-art{padding:18px 10px 10px;margin-inline:5px}.hero-ring{inset:0}.hero-frame>img{aspect-ratio:1.7}.hero-frame figcaption{padding:18px 22px}.hero-frame figcaption strong{font-size:21px;margin-top:5px}.hero-play{bottom:145px;right:25px}.red-seal{left:-5px;bottom:0;font-size:15px}.strip-inner{gap:2px 20px;padding-block:20px}.strip-inner>span{margin-bottom:5px;gap:15px}.strip-inner a{font-size:11px;min-height:36px}.strip-inner small{font-size:7px}.home-section{padding-block:50px}.section-heading{display:block;margin-bottom:28px}.section-heading h2{font-size:28px;letter-spacing:-.5px}.section-heading>p{margin-top:17px}.section-heading>.text-link{margin-top:12px}.practice-grid{display:block}.practice-link{gap:17px;padding:23px 0}.practice-link h3{font-size:22px}.practice-link h3 small{display:inline;margin-left:13px;font-size:10px}.practice-link p{font-size:11px}.practice-glyph{top:7px;font-size:64px}.video-feature{padding-block:48px}.video-grid{grid-template-columns:1fr;gap:30px}.video-name{font-size:19px;margin-top:14px}.video-caption{margin-top:5px}.video-grid .video-poster{aspect-ratio:1.8}.about-preview{display:flex;flex-direction:column;gap:38px;align-items:stretch;padding-block:55px}.about-symbol{font-size:115px;justify-content:flex-start;padding-left:15px;gap:35px}.about-symbol span{font-size:14px}.about-preview h2{font-size:29px;margin-bottom:17px}.about-preview p:not(.eyebrow){font-size:13px}.last-invite{flex-direction:column;align-items:flex-start;gap:25px;padding-block:35px 50px}.last-invite h2{font-size:25px}.site-footer{padding-block:35px 25px}.footer-top{gap:23px}.footer-links{flex-wrap:wrap;gap:5px 23px;font-size:11px}.footer-bottom{margin-top:20px;padding-top:20px;display:block;font-size:9px}.footer-bottom span,.footer-bottom a{display:block;margin-bottom:5px}.page-intro{padding-block:35px 30px}.page-intro h1{font-size:36px;margin-top:14px;margin-bottom:16px}.page-intro>p:not(.eyebrow){font-size:13px}.videos-page,.questions-page,.about-page{padding-bottom:50px}.filter-tabs{gap:5px}.filter-tabs button{padding:9px 12px;font-size:12px}.search-box{padding:10px 13px;gap:10px}.search-box input{font-size:12px}.search-box>span{font-size:10px}.search-box svg{width:18px;height:18px}.video-browse{gap:16px;padding-bottom:20px}.source-note{margin-top:35px;display:block;font-size:11px;line-height:2}.source-note a{display:block;margin-top:10px}.qa-item summary{grid-template-columns:1fr 22px;gap:0 12px;padding:19px 0;font-size:17px}.qa-category{grid-column:1/2;line-height:1.8;margin-bottom:6px}.qa-item summary>span:nth-child(2){grid-row:2;grid-column:1}.qa-plus{grid-column:2;grid-row:1/3;align-self:center}.qa-answer{margin:0 5px 24px 0;font-size:14px}.reader-toolbar{top:76px;gap:7px;flex-wrap:wrap;padding-block:8px}.reader-tools{gap:4px}.reader-tools button{padding-inline:8px;font-size:10px;min-height:40px}#toc-toggle{padding-inline:9px;font-size:11px;gap:7px;min-height:40px}#toc-toggle svg{width:17px}#bookmark{font-size:10px}.reader{font-size:17px}.reader section,.reader [id^=f-]{scroll-margin-top:155px}.reading-layout{padding-bottom:50px}.reading-note{font-size:11px;padding:15px}.inline-video-grid{grid-template-columns:1fr}.teacher-intro{grid-template-columns:1fr;gap:30px;padding-top:0;padding-bottom:45px}.teacher-intro figure{padding:18px}.teacher-intro figure img{aspect-ratio:2.1}.teacher-intro h2{font-size:30px}.teacher-intro p:not(.eyebrow){font-size:13px}.about-story{padding-block:35px}.about-story blockquote{font-size:25px;margin:16px 0 25px}.story-columns{grid-template-columns:1fr;gap:25px}.story-columns p{font-size:13px}.resource-list{display:block;padding-block:40px}.resource-list>div{margin-bottom:15px}.resource-list h2{font-size:27px}.resource-list>a{padding-block:20px}.contact-note{padding:25px 22px}.contact-note h2{font-size:23px}.contact-note>p{font-size:13px}.contact-account{gap:8px}.contact-account button{margin-top:8px}.player-top{padding:9px 13px}.player-top h2{font-size:16px}.player-controls{display:block;padding:15px;font-size:11px}.player-controls p{margin-top:12px}dialog{width:calc(100% - 22px)}#player-dialog video{max-height:58vh}.empty-state{padding:45px 5px}.empty-state h2{font-size:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.video-card:hover .video-poster img{transform:none}}
@media print{.site-header,.site-footer,.reader-toolbar,#reader-toc,dialog,.inline-video-grid,.inline-video,#toast,.skip{display:none!important}.wrap{width:100%}.reading-layout{display:block;padding:0}.reader{font-size:12pt;max-width:100%}body{background:#fff;color:#111}.reader section{break-before:auto}.reader figure,.reader .keybox,.reader .warnbox{break-inside:avoid}.page-intro{padding-block:0 20px}}