.video-card{min-width:0;background:white;border:1px solid #b9cbd5;padding:12px;box-shadow:7px 7px 0 #e4ecf6}.video-stage{aspect-ratio:16/9;position:relative;background:#102b3b;overflow:hidden}.video-stage video{width:100%;height:100%;object-fit:contain;background:#102b3b}.video-placeholder{height:100%;padding:24px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(135deg,#123245,#205257)}.video-tag{font-size:10px;color:#cbe6e5;letter-spacing:.06em}.teaching-board{width:78%;margin:16px auto;background:#f6f8ef;color:#123245;padding:20px;transform:rotate(-2deg);box-shadow:8px 8px 0 #0002}.teaching-board>small{color:#387571}.teaching-board>div{display:flex;justify-content:space-between;align-items:center;margin:12px 0;font-size:14px}.teaching-board span{border:1px solid #82b5b3;padding:3px 10px}.teaching-board i{font-style:normal}.teaching-board p{font-size:12px;border-bottom:1px dashed #aac1c1;padding-bottom:5px}.play-mark{position:absolute;left:calc(50% - 25px);top:calc(50% - 25px);width:50px;height:50px;border-radius:50%;background:#123245dd;border:1px solid #b3d7d5;display:grid;place-items:center;font-size:25px}.video-placeholder>p{font-size:11px;color:#dcf2ed}.video-tools{display:flex;align-items:center;gap:15px;margin-top:14px}.video-tools label{font-size:12px;color:#1e4f8f;cursor:pointer;border-bottom:1px solid #1e4f8f;padding:5px 0}.video-tools input{width:1px;height:1px;position:absolute;clip-path:inset(50%)}.video-tools:focus-within{outline:2px solid #2ab0ae;outline-offset:3px}.video-tools button{border:0;background:#e4ecf6;padding:5px 10px;font-size:11px}.video-status{font-size:10px;color:#4a5868;margin-top:10px!important;overflow-wrap:anywhere}.hand-note{font-family:'Shippori Mincho B1',serif;color:#2b7e81;font-size:19px;border-left:2px solid #2ab0ae;padding-left:18px;margin-top:28px}.video-hero{gap:5%;grid-template-columns:1fr 1.15fr}.video-hero h1{font-size:clamp(32px,3.8vw,53px)}.video-feature,.chapter-notes{padding-top:65px}.paired{display:grid;grid-template-columns:1fr 1.15fr;gap:35px;align-items:start;margin-top:35px}.artifact-note{padding:25px;border:1px solid #d2dce4;background:white}.artifact-note h3{font-size:22px;margin:12px 0 22px}.artifact-note img{border:1px solid #d2dce4}.artifact-note>p{font-size:13px;margin:20px 0}.teaching-caption{padding:20px 0 0 15px;border-left:2px solid #2ab0ae;margin-top:25px}.teaching-caption span{font-size:10px;color:#257679}.teaching-caption p{margin-top:8px;font-size:14px}.chapter-tabs{display:flex;gap:12px;margin:30px 0}.chapter-tabs button{border:1px solid #aac7cb;color:#1e4f8f;background:#fff;padding:13px 20px;font-size:12px}.chapter-tabs button[aria-pressed=true]{background:#123245;color:white}.chapter{display:grid;grid-template-columns:.75fr 1.3fr;gap:45px;align-items:center}.chapter-number{font-family:serif;font-size:65px;color:#82b5b3}.chapter-copy h3{font-family:'Shippori Mincho B1',serif;font-size:27px;line-height:1.6;margin:10px 0 20px}.chapter-copy>p{color:#4a5868}.question-note{padding:18px;background:#dff3f2;margin-top:25px}.question-note p{font-size:13px;margin-top:8px}.video-comparison{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-comparison h2{font-size:24px}.layout-preview{background:#e4ecf6;min-height:220px;padding:22px;display:flex;gap:15px}.layout-preview>span{font-size:35px;color:#5b8e9e;font-family:serif}.layout-lines{font-size:13px;flex:1}.layout-video{margin-top:20px;background:#123245;color:#dff3f2;height:110px;display:grid;place-items:center;font-size:30px;box-shadow:7px 7px 0 #a9cece}.layout-2 .layout-video{margin-left:35px}.layout-3{background:repeating-linear-gradient(#fff,#fff 25px,#d2dce4 26px)}.layout-3 .layout-video{border-left:8px solid #2ab0ae}.video-comparison .preview{aspect-ratio:16/10;object-fit:cover}.video-v2 .hero,.video-v3 .hero{min-height:570px}.video-v2 .note-board,.video-v3 .note-board{transform:rotate(1deg)}
.v3 .fullwidth-teaching{max-width:none;width:100%;margin:0;padding:65px 0 70px;border:0}.v3 .fullwidth-teaching:before{display:none}.fullwidth-teaching>.section-head,.fullwidth-teaching>.teaching-caption{max-width:1090px;margin:0 auto;padding:0 28px}.fullwidth-teaching>.section-head{margin-bottom:32px}.fullwidth-teaching>.video-card{padding:0;border:0;box-shadow:none;background:transparent}.fullwidth-teaching .video-stage{width:100%;aspect-ratio:16/9}.fullwidth-teaching .video-placeholder{padding:clamp(18px,4vw,60px);justify-content:space-between}.fullwidth-teaching .teaching-board{max-width:740px;width:72%;padding:clamp(18px,4vw,60px);margin:auto;transform:rotate(-1deg)}.fullwidth-teaching .teaching-board>div{font-size:clamp(16px,2.5vw,34px);margin:25px 0}.fullwidth-teaching .teaching-board small,.fullwidth-teaching .teaching-board p{font-size:clamp(12px,1.5vw,20px)}.fullwidth-teaching .play-mark{width:64px;height:64px;left:calc(50% - 32px);top:calc(50% - 32px);cursor:pointer}.fullwidth-teaching .video-tools,.fullwidth-teaching .video-status{max-width:1090px;margin-left:auto;margin-right:auto;padding-left:28px;padding-right:28px}.fullwidth-teaching>.teaching-caption{margin-top:35px;border:0}.fullwidth-teaching .teaching-caption a{margin-top:18px}
@media(max-width:640px){.v3 .fullwidth-teaching{margin:0;padding:40px 0}.fullwidth-teaching .video-placeholder{padding:12px}.fullwidth-teaching .teaching-board{padding:12px;width:75%}.fullwidth-teaching .teaching-board>div{margin:8px 0}.fullwidth-teaching .teaching-board small,.fullwidth-teaching .teaching-board p{font-size:10px}.fullwidth-teaching .play-mark{width:42px;height:42px;left:calc(50% - 21px);top:calc(50% - 21px)}}
@media(max-width:900px){.video-comparison{grid-template-columns:1fr}.paired,.chapter{gap:22px}.teaching-board{padding:12px;width:90%}.teaching-board>div{font-size:12px}.video-placeholder{padding:15px}.teaching-board span{padding:2px 6px}}
@media(max-width:640px){.video-hero{display:block}.hero-video{margin-top:35px}.video-placeholder{padding:12px}.teaching-board{margin:8px auto;padding:10px}.teaching-board>div{margin:6px 0}.teaching-board p{font-size:10px}.video-tag,.video-placeholder>p{font-size:9px}.paired,.chapter{display:block}.paired>.video-card,.paired>div,.chapter>.video-card{margin-top:25px}.chapter-tabs{gap:7px}.chapter-tabs button{padding:10px 8px;font-size:10px;flex:1}.chapter-number{font-size:45px}.chapter-copy h3{font-size:24px}.video-v2 .hero,.video-v3 .hero{min-height:0}.video-comparison h2{font-size:25px}}