.materials-intro{max-width:980px;padding-bottom:45px}.materials-intro h1{max-width:850px;margin-inline:auto;font-size:clamp(38px,5vw,58px)}.materials-intro p+p{margin-top:18px}.materials-intro .materials-notice{background:var(--pale);border:1px solid #cbd1c3;border-radius:7px;max-width:850px;padding:20px 25px;font-size:17px}.materials-notice a{text-underline-offset:3px;text-decoration:underline}.materials-library{padding-bottom:90px}.materials-library>h2{margin-bottom:28px;font-size:32px}.materials-filters{background:var(--white);border:1px solid var(--line);border-radius:8px;grid-template-columns:1.5fr 1fr .8fr;gap:18px;padding:25px;display:grid}.materials-filters label{flex-direction:column;gap:9px;min-width:0;font-size:16px;font-weight:600;display:flex}.materials-filters input,.materials-filters select{width:100%;min-width:0;min-height:48px;color:var(--ink);background:#fff;border:1px solid #a899ab;border-radius:5px;padding:11px;font-size:17px;font-weight:400}.materials-results{color:var(--muted);margin:22px 0;font-size:17px}.materials-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;display:grid}.material-card{border:1px solid var(--line);background:var(--white);border-radius:9px;flex-direction:column;min-width:0;display:flex;overflow:hidden}.material-card-cover{border-bottom:1px solid var(--line);background:#eee8e4;justify-content:center;align-items:center;height:355px;padding:20px;display:flex}.material-card-cover img{object-fit:contain;width:auto;max-width:100%;height:100%;transition:transform .2s;box-shadow:0 4px 12px #39364616}.material-card-cover:hover img{transform:translateY(-3px)}.material-card-copy{flex-direction:column;flex:1;padding:25px;display:flex}.material-card .tag{letter-spacing:.6px;white-space:normal;align-self:flex-start;font-size:13px}.material-card h3{font-family:var(--serif);overflow-wrap:anywhere;margin:17px 0 15px;font-size:27px;line-height:1.2}.material-card-copy>p{color:var(--muted);margin-bottom:15px;font-size:17px;line-height:1.75}.material-card-copy>.material-meta,.material-card-copy>.material-level{margin-bottom:8px;font-size:15px}.material-card-copy>.material-level{color:var(--teal-dark);margin-bottom:17px}.material-card-copy>.text-link{margin-top:auto;padding-top:7px;font-size:17px}.materials-empty{background:var(--white);border:1px solid var(--line);border-radius:7px;padding:35px;font-size:19px}.materials-pagination{justify-content:center;align-items:center;gap:22px;margin-top:35px;font-size:17px;display:flex}.materials-pagination button:disabled{opacity:.6;transform:none}.material-breadcrumb{color:var(--teal-dark);padding-top:32px;font-size:17px}.material-hero{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:start;gap:65px;padding-top:35px;padding-bottom:65px;display:grid}.preview-button{border:1px solid var(--line);background:var(--white);color:var(--teal-dark);text-align:center;border-radius:7px;width:100%;padding:0;display:block;overflow:hidden}.preview-button img{object-fit:contain;width:100%;height:auto}.preview-button>span{border-top:1px solid var(--line);padding:13px 15px;font-size:15px;display:block}.material-main-cover{max-width:430px;margin:auto;box-shadow:0 8px 28px #39364612}.material-hero-copy{padding-top:10px}.material-hero h1{margin:18px 0 22px;font-size:clamp(36px,4vw,52px);line-height:1.14}.material-paid{background:var(--pale);color:var(--teal-dark);border:1px solid #cbd1c3;border-radius:4px;padding:5px 12px;font-size:15px;display:inline-block}.material-facts{border-block:1px solid var(--line);margin:24px 0;padding:18px 0;font-size:17px}.material-facts>div{grid-template-columns:80px minmax(0,1fr);gap:15px;margin:7px 0;display:grid}.material-facts dt{font-weight:600}.material-facts dd{color:var(--muted);margin:0}.material-overview-title{font-family:var(--sans);letter-spacing:0;margin-bottom:10px;font-size:20px;font-weight:600}.material-hero-copy>p{color:var(--muted);margin-bottom:22px;font-size:19px;line-height:1.85}.material-hero-copy>.material-contact-note{margin-top:16px;font-size:15px}.material-reading{max-width:1080px;padding-bottom:65px}.material-section{border-top:1px solid var(--line);padding:45px 0}.material-section h2{margin-bottom:20px;font-size:36px}.material-section>p,.material-section li{color:var(--muted);font-size:19px;line-height:1.85}.material-section>p{max-width:800px;margin-bottom:20px}.material-section ul{margin:0;padding-left:24px}.material-section li+li{margin-top:8px}.material-section .material-scroll-hint{font-size:16px}.material-gallery{scroll-snap-type:x mandatory;align-items:flex-start;gap:24px;padding:5px 5px 20px;display:flex;overflow-x:auto}.material-gallery figure{scroll-snap-align:start;flex:0 0 min(440px,85%);min-width:0}.material-gallery figcaption{color:var(--muted);justify-content:space-between;gap:15px;padding:15px 3px;font-size:16px;display:flex}.material-gallery figcaption strong{color:var(--ink);font-weight:600}.sample-gallery{grid-template-columns:repeat(2,minmax(0,1fr));display:grid;overflow:visible}.material-contact{background:var(--pale);border:1px solid #cbd1c3;border-radius:8px;grid-template-columns:minmax(0,1fr) 232px;align-items:center;gap:32px;margin-top:15px;padding:35px;display:grid}.material-contact p{color:var(--muted);margin-bottom:20px;font-size:18px;line-height:1.8}.material-wechat-actions{flex-wrap:wrap;align-items:center;gap:16px;margin:12px 0;display:flex}.material-wechat-actions code{font:600 21px/1.5 var(--sans);overflow-wrap:anywhere}.material-contact .material-copy-status{min-height:1.8em;margin:0;font-size:16px}.material-contact .material-contact-help{margin:12px 0 0;font-size:16px}.material-wechat-qr{background:var(--white);border-radius:8px;margin:0;padding:12px}.material-wechat-qr img{width:100%;height:auto}.material-wechat-qr figcaption{text-align:center;color:var(--ink);margin-top:8px;font-size:15px}.material-credits{color:var(--muted);margin-top:24px;font-size:15px}.material-credits a{text-decoration:underline}@media (width<=800px){.material-contact{grid-template-columns:1fr}.material-wechat-qr{width:232px;max-width:100%}}.material-section video{max-width:100%;height:auto;display:block}.material-lightbox{border:1px solid var(--line);background:var(--white);width:min(96vw,1150px);max-width:96vw;height:94vh;max-height:94vh;color:var(--ink);border-radius:9px;margin:auto;padding:0;overflow:hidden}.material-lightbox::backdrop{background:#211b28cb}.material-lightbox-toolbar{border-bottom:1px solid var(--line);align-items:center;gap:12px;min-height:90px;padding:16px;display:flex}.material-lightbox-toolbar h2{font:500 17px/1.5 var(--sans);letter-spacing:0;overflow-wrap:anywhere;max-width:65%;margin:0 auto 0 0}.material-lightbox-scroll{background:#e7e3e0;height:calc(100% - 90px);padding:20px;overflow:auto}.material-lightbox img{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:100%;margin:auto}.material-lightbox.is-zoomed img{width:2000px;max-width:none;height:auto;max-height:none;margin:0}@media (width<=1000px){.materials-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.materials-filters{grid-template-columns:1fr 1fr}.materials-filters label:first-child{grid-column:1/-1}.material-hero{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:35px}}@media (width<=650px){.materials-grid{grid-template-columns:1fr;gap:24px}.materials-filters{grid-template-columns:1fr;gap:18px;padding:20px}.materials-filters label:first-child{grid-column:auto}.material-card-cover{height:365px}.material-card-copy{padding:23px}.materials-library>h2{font-size:29px}.materials-intro .materials-notice{padding:18px}.material-hero{grid-template-columns:1fr;gap:30px;padding-top:25px;padding-bottom:35px}.material-main-cover{max-width:300px}.material-hero h1{font-size:36px}.material-hero-copy{padding-top:0}.material-section{padding:32px 0}.material-section h2{font-size:31px}.material-section>p,.material-section li{font-size:18px}.sample-gallery{grid-template-columns:1fr;gap:18px}.material-contact{padding:24px}.material-lightbox-toolbar{flex-wrap:wrap;min-height:130px;padding:12px}.material-lightbox-toolbar h2{width:100%;max-width:none;font-size:16px}.material-lightbox-scroll{height:calc(100% - 130px);padding:10px}.materials-pagination{gap:12px;font-size:16px}.materials-pagination .button{padding:12px}.material-gallery{gap:15px}}@media (prefers-reduced-motion:reduce){.material-card-cover img{transition:none}}