/* Illustrated biomaterials lessons: shared site typography, preserved scientific figures. */
main.biomat-container{max-width:1260px;width:100%;padding:0 28px;min-width:0}
.biomat-course{--paper:var(--c-surface);--ink:var(--c-fg);--muted:var(--c-fg-soft);--line:var(--c-border);--accent:var(--c-primary);--warm:var(--c-accent);--wash:var(--c-primary-soft);--panel:var(--c-surface);color:var(--ink);font:16px/1.95 var(--font-sans);overflow-wrap:break-word;min-width:0}
.biomat-course .bc-crumb{display:flex;flex-wrap:wrap;gap:9px;padding:22px 0 18px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.7}
.biomat-course .bc-crumb a{color:inherit;text-decoration:none}.biomat-course .bc-crumb a:hover{color:var(--accent)}
.biomat-course .bc-layout{display:grid;grid-template-columns:202px minmax(0,850px);gap:44px;padding:32px 0 60px;justify-content:center}
.biomat-course .bc-main{min-width:0}.biomat-course .bc-toc{position:sticky;top:88px;align-self:start;max-height:calc(100vh - 112px);max-height:calc(100dvh - 112px);overflow:auto;scrollbar-width:thin;font-size:12px;line-height:1.7}
.biomat-course .bc-toc details{margin:0;padding:0;border:0}.biomat-course .bc-toc summary{font-size:12px;color:var(--muted);padding:3px 0 13px;cursor:pointer}.biomat-course .bc-toc nav{border-left:1px solid var(--line)}.biomat-course .bc-toc a{display:block;padding:7px 0 7px 13px;color:var(--muted);text-decoration:none;border-left:2px solid transparent;margin-left:-1px;line-height:1.7}.biomat-course .bc-toc a:hover,.biomat-course .bc-toc a.active{color:var(--accent);border-left-color:var(--accent)}
.biomat-course .bc-hero{padding:0 0 24px;margin:0 0 30px;border-bottom:1px solid var(--line)}.biomat-course .bc-hero h1{font:650 34px/1.5 var(--font-sans);letter-spacing:-.02em;text-wrap:pretty;margin:0 0 19px;text-align:left}.biomat-course .bc-hero p{color:var(--muted);font-size:15.5px;line-height:1.95;margin:0}
.biomat-course article>section{padding:4px 0 26px;margin:0 0 28px;border-bottom:1px solid var(--line);scroll-margin-top:95px}.biomat-course article>section:last-child{border-bottom:0}
.biomat-course h2{font:650 24px/1.6 var(--font-sans);color:var(--ink);margin:25px 0 21px;text-wrap:pretty;text-align:left}.biomat-course h3{font:650 19px/1.65 var(--font-sans);color:var(--ink);margin:27px 0 15px;text-align:left}
.biomat-course p{margin:0 0 1.25em;text-align:justify;text-justify:inter-ideograph;overflow-wrap:break-word}.biomat-course [lang=en] p,.biomat-course[data-lang=en] .bc-hero p{hyphens:auto;text-justify:auto}.biomat-course a{text-underline-offset:3px}.biomat-course strong{font-weight:650}.biomat-course ul,.biomat-course ol{padding-left:1.5em;margin:15px 0 24px}.biomat-course li{margin-bottom:.6em}
.biomat-course figure{min-width:0;margin:30px 0 34px}.biomat-course .science-figure{padding:20px 0 0;border-top:2px solid var(--accent)}.biomat-course .figure-wrap{overflow:auto;background:#faf9f5;border-radius:5px}.biomat-course figure svg,.biomat-course .lab svg{display:block;width:100%;max-width:100%;height:auto;margin:0 auto;background:#faf9f5;color:#182c34;border-radius:5px;overflow:visible}.biomat-course svg text{font-family:'Segoe UI','Microsoft YaHei',sans-serif}.biomat-course svg[role=button]{cursor:zoom-in}.biomat-course svg[role=button]:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.biomat-course figcaption{font:13px/1.85 var(--font-sans);color:var(--muted);margin-top:14px;text-align:left}
.biomat-course .equation{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0 6px;margin:28px 0}.biomat-course .equation-heading{display:flex;justify-content:space-between;gap:16px;color:var(--accent);font:600 14px/1.6 var(--font-sans);margin-bottom:12px}.biomat-course .equation-heading>span:last-child{white-space:nowrap;flex-shrink:0}.biomat-course .math{max-width:100%;overflow:auto;text-align:center;padding:16px 6px;margin:10px 0 16px}.biomat-course .math mjx-container{display:inline-block!important;max-width:100%}.biomat-course .math svg{max-width:100%;height:auto;min-height:24px;background:transparent;color:var(--ink)}.biomat-course .equation p{font-size:.94em}.biomat-course .eq-label{font-family:var(--font-sans);font-weight:650;margin-right:.4em;color:var(--accent)}
.biomat-course table{border-collapse:collapse;font-size:14px;line-height:1.75;max-width:100%;margin:18px 0}.biomat-course .symbols{width:100%;table-layout:fixed;font-size:13px;line-height:1.7;margin:12px 0 22px}.biomat-course .symbols col:first-child{width:20%}.biomat-course .symbols col:nth-child(2){width:59%}.biomat-course .symbols col:last-child{width:21%}.biomat-course th{text-align:left;font-weight:600;color:var(--muted);background:var(--wash)}.biomat-course td,.biomat-course th{padding:9px 11px;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere}.biomat-course .symbols td:first-child{font-family:Georgia,'Times New Roman',serif;color:var(--accent);font-size:16px}
.biomat-course .lab{border-top:2px solid var(--warm);padding:22px 0 10px;margin:28px 0;font:14px/1.8 var(--font-sans);min-width:0}.biomat-course .lab label{display:block;margin:9px 0 4px}.biomat-course .lab input[type=range]{width:100%;accent-color:var(--accent);margin:9px 0 17px;min-height:30px}.biomat-course .lab output{font-variant-numeric:tabular-nums;font-weight:650;color:var(--accent)}.biomat-course .lab .controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px 25px}.biomat-course .lab .controls>*{min-width:0}.biomat-course .lab .feedback{margin:14px 0;padding-left:15px;border-left:2px solid var(--warm)}.biomat-course .lab-caption{font-size:13px;color:var(--muted);margin-top:12px;text-align:left}.biomat-course button,.biomat-course select,.biomat-course input{font-family:var(--font-sans);max-width:100%;color:var(--ink)}.biomat-course button,.biomat-course select{min-height:38px;background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:6px 10px;font-size:14px}.biomat-course button{cursor:pointer}.biomat-course button:hover{background:var(--wash)}.biomat-course input:not([type=range]):not([type=checkbox]){background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:7px 9px;min-height:38px}.biomat-course button[aria-pressed=true]{background:var(--accent);color:var(--paper)}
.biomat-course details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:23px 0;padding:14px 0}.biomat-course summary{font:600 15px/1.7 var(--font-sans);cursor:pointer;color:var(--accent)}.biomat-course details[open] summary{margin-bottom:15px}.biomat-course details p:last-child{margin-bottom:0}.biomat-course .bc-related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;border-top:1px solid var(--line);padding:24px 0;margin-top:30px}.biomat-course .bc-related a{font-size:13px;line-height:1.8;text-decoration:none;padding:13px 15px;border:1px solid var(--line);border-radius:7px}.biomat-course .bc-related a:hover{border-color:var(--accent)}
.bc-figure-dialog{width:min(1150px,calc(100% - 24px));max-height:94dvh;border:1px solid var(--c-border);border-radius:10px;padding:14px;background:var(--c-surface);color:var(--c-fg);box-shadow:0 20px 80px #0005}.bc-figure-dialog::backdrop{background:#08111ccc;backdrop-filter:blur(5px)}.bc-figure-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-bottom:12px}.bc-figure-toolbar button{min-height:36px;min-width:38px;padding:5px 10px;font:14px/1.5 var(--font-sans);color:var(--c-fg);background:transparent;border:1px solid var(--c-border);border-radius:5px;cursor:pointer}.bc-figure-stage{overflow:auto;max-height:75dvh;background:#faf9f5;color:#182c34;overscroll-behavior:contain}.bc-figure-stage>svg{display:block;max-width:none;height:auto;margin:0 auto;flex-shrink:0}.bc-figure-caption{font:13px/1.75 var(--font-sans);margin:13px 0 0;color:var(--c-fg-soft)}
@media(max-width:1000px){.biomat-course .bc-layout{grid-template-columns:170px minmax(0,1fr);gap:28px}.biomat-course .bc-hero h1{font-size:30px}}
@media(max-width:760px){main.biomat-container{padding:0 17px}.biomat-course{font-size:14px;line-height:1.9}.biomat-course .bc-crumb{font-size:11.5px;padding:17px 0 13px;gap:7px}.biomat-course .bc-layout{display:flex;flex-direction:column;padding:20px 0 38px;gap:20px}.biomat-course .bc-toc{position:static;max-height:none;width:100%;font-size:12px;order:0}.biomat-course .bc-toc details{border-bottom:1px solid var(--line);padding:0 0 9px}.biomat-course .bc-toc summary{font-size:12px;padding:0;margin-bottom:0}.biomat-course .bc-toc details[open] summary{margin-bottom:10px}.biomat-course .bc-toc nav{max-height:40vh;overflow:auto}.biomat-course .bc-toc a{padding:6px 0 6px 12px}.biomat-course .bc-hero{padding-bottom:20px;margin-bottom:24px}.biomat-course .bc-hero h1{font-size:24px;line-height:1.5;letter-spacing:-.02em;margin-bottom:14px}.biomat-course .bc-hero p{font-size:13.5px;line-height:1.9}.biomat-course h2{font-size:19px;line-height:1.6;margin:20px 0 16px}.biomat-course h3{font-size:16px;line-height:1.65;margin:22px 0 13px}.biomat-course p{margin-bottom:1.15em}.biomat-course article>section{padding:0 0 20px;margin-bottom:23px}.biomat-course figure{margin:25px 0}.biomat-course .science-figure{padding-top:15px}.biomat-course figcaption{font-size:12px;line-height:1.8}.biomat-course .equation{padding:15px 0 4px;margin:24px 0}.biomat-course .equation-heading{font-size:12.5px;gap:12px}.biomat-course .math{padding:13px 0}.biomat-course .symbols{font-size:11.5px;line-height:1.7}.biomat-course .symbols col:first-child{width:23%}.biomat-course .symbols col:nth-child(2){width:55%}.biomat-course .symbols col:last-child{width:22%}.biomat-course .symbols td,.biomat-course .symbols th{padding:8px 5px}.biomat-course .symbols td:first-child{font-size:14px}.biomat-course table{font-size:12px}.biomat-course .lab{font-size:13px;line-height:1.8;padding-top:17px}.biomat-course .lab .controls{grid-template-columns:1fr;gap:5px}.biomat-course .lab-caption{font-size:12px}.biomat-course input,.biomat-course select{font-size:16px}.biomat-course button{font-size:13px}.biomat-course summary{font-size:13px}.biomat-course .bc-related{gap:10px;padding-top:20px;margin-top:22px}.biomat-course .bc-related a{font-size:12px;padding:11px}.bc-figure-dialog{padding:10px}.bc-figure-stage{max-height:68dvh}.bc-figure-caption{font-size:12px}}
@media(max-width:360px){.biomat-course .bc-hero h1{font-size:22px}.biomat-course .bc-related{grid-template-columns:1fr}}
@media print{.biomat-course .bc-toc,.biomat-course .bc-crumb,.biomat-course .bc-related{display:none!important}.biomat-course .bc-layout{display:block;padding:0}.biomat-course{font-size:11pt;--ink:#182c34;--muted:#576b73;--line:#d7dedb;--accent:#086e71;--warm:#bd582a;--wash:#eef3ef;--paper:white;--panel:white}.biomat-course .bc-hero h1{font-size:22pt}.biomat-course h2{font-size:16pt;break-after:avoid}.biomat-course figure,.biomat-course .equation{break-inside:avoid}.biomat-course .lab input,.biomat-course .lab button{display:none}.bc-figure-dialog{display:none!important}}
/* Center the native modal after the global margin reset. */
.bc-figure-dialog{position:fixed;inset:0;margin:auto}
.biomat-course .bc-toc details,.biomat-course .bc-toc summary{background:transparent;border-radius:0}