/* The platform shell owns global navigation. These styles scope the reading
   layout, diagrams and worked examples to educational guide content. */
.guide-main{--guide-ink:#192838;--guide-muted:#58697c;--guide-blue:#245ad2;--guide-line:#e0e6ee;--guide-soft:#f3f6fb;max-width:1120px;margin:0 auto}
.guide-main .platform-hero{padding:28px 30px}.guide-main .platform-hero h1{max-width:900px;line-height:1.45}.guide-main .platform-lead{max-width:790px;color:var(--guide-muted);font-size:15px;line-height:1.9}
.guide-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;align-items:start;margin-top:24px}
.guide-toc{position:sticky;top:86px;padding:17px 15px;background:#fff;border:1px solid var(--guide-line);border-radius:10px;font-size:12px;line-height:1.65}
.guide-toc>strong{display:block;margin-bottom:10px;color:var(--guide-ink);font-size:13px}.guide-toc ol{margin:0 0 14px;padding-left:19px}.guide-toc li+li{margin-top:9px}.guide-toc a{color:var(--guide-muted);text-decoration:none}.guide-toc a:hover{color:var(--guide-blue);text-decoration:underline}
.guide-article{min-width:0;padding:8px 30px 28px;border:1px solid var(--guide-line);border-radius:12px;background:#fff;color:var(--guide-ink);font-size:15px;line-height:1.9}
.guide-section,.guide-related,.guide-sources{scroll-margin-top:84px;padding-top:24px}.guide-section+.guide-section,.guide-related,.guide-sources{margin-top:22px;border-top:1px solid var(--guide-line)}
.guide-article h2{margin:0 0 14px;color:var(--guide-ink);font-size:20px;line-height:1.5;font-weight:650;letter-spacing:-.015em}.guide-article h3{margin:19px 0 8px;font-size:16px;line-height:1.6}.guide-article p{margin:0 0 14px;overflow-wrap:anywhere}.guide-article p:last-child{margin-bottom:0}
.guide-article ul,.guide-article ol{margin:0 0 14px;padding-left:23px}.guide-article li+li{margin-top:10px}.guide-article strong{font-weight:650}.guide-article a{color:var(--guide-blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.guide-article a:hover{color:#173f9e}.guide-main a:focus-visible,.guide-table-wrap:focus-visible{outline:3px solid #245ad2;outline-offset:4px;border-radius:3px}
.guide-formula{margin:18px 0;padding:17px 19px;border-left:3px solid var(--guide-blue);border-radius:0 8px 8px 0;background:var(--guide-soft);color:#203a5b;font-family:ui-monospace,SFMono-Regular,Menlo,"PingFang SC","Microsoft YaHei",monospace;font-size:14px;line-height:1.95;overflow-wrap:anywhere}.guide-formula p{margin:0}.guide-formula .guide-formula-source{margin-top:8px;font:12px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
.guide-example{padding:20px;border:1px solid #dce6f7;border-radius:10px;background:#f9fbff}.guide-note{margin:16px 0;padding:14px 17px;border:1px solid #e6e0ca;border-radius:8px;background:#fffcf4;color:#64532d;font-size:13px}
.guide-figure{margin:20px 0;padding:16px 16px 12px;border:1px solid var(--guide-line);border-radius:10px;background:#fafbfd}.guide-figure svg{display:block;width:100%;height:auto;max-height:280px}.guide-figure figcaption{margin-top:10px;color:var(--guide-muted);font-size:12px;line-height:1.75}.guide-figure svg text{fill:#3b5068;font:15px -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}.guide-svg-plate{fill:#e4ebf4;stroke:#95a9c2;stroke-width:2}.guide-svg-bolt{fill:#c4d6f4;stroke:#245ad2;stroke-width:2}.guide-svg-force{fill:none;stroke:#245ad2;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.guide-svg-spring{fill:none;stroke:#6d849e;stroke-width:3;stroke-linejoin:round}.guide-svg-box{fill:#f0f5fd;stroke:#a9bfdf;stroke-width:1.5}.guide-svg-reference{fill:none;stroke:#acb6c4;stroke-width:1.5;stroke-dasharray:4 4}.guide-svg-bolt-line{fill:none;stroke:#245ad2;stroke-width:9;stroke-linecap:round}
.guide-table-wrap{margin:17px 0;overflow-x:auto;border:1px solid var(--guide-line);border-radius:8px;-webkit-overflow-scrolling:touch}.guide-table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.7}.guide-table caption{padding:11px 13px;text-align:left;background:#f3f6fa;color:#3f536a;font-weight:600}.guide-table th,.guide-table td{padding:10px 12px;text-align:left;vertical-align:top;border-top:1px solid var(--guide-line);overflow-wrap:normal}.guide-table thead th{background:#f9fafc;font-size:12px;color:#52667c;font-weight:600}.guide-table tbody th{min-width:100px;font-weight:600;color:#314960}.guide-table td{min-width:100px;color:#475a70}.guide-table tbody tr:nth-child(even){background:#fbfcfe}
.guide-actions{display:flex;flex-wrap:wrap;gap:10px;margin:17px 0}.guide-actions>a,.guide-action{display:inline-flex;align-items:center;gap:9px;min-height:42px;padding:9px 14px;border:1px solid #cddaf1;border-radius:8px;background:#f5f8ff;color:var(--guide-blue);font-size:13px;font-weight:600;line-height:1.5;text-decoration:none!important}.guide-actions>a:hover,.guide-action:hover{background:#eaf1ff;border-color:#a4bce8}.guide-sources{font-size:12px;color:var(--guide-muted);line-height:1.8}.guide-sources h2{font-size:17px}.guide-sources li{overflow-wrap:anywhere}.guide-related h2{font-size:18px}
@media(max-width:1180px){.guide-layout{grid-template-columns:155px minmax(0,1fr);gap:17px}.guide-article{padding-right:23px;padding-left:23px}.guide-toc{padding:15px 12px}}
@media(max-width:780px){.guide-layout{grid-template-columns:1fr;gap:17px}.guide-toc{position:static;padding:17px 20px}.guide-toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px 22px;padding-left:19px}.guide-toc li+li{margin-top:0}.guide-article{font-size:14px}.guide-main .platform-hero{padding:23px}.guide-main .platform-lead{font-size:14px}.guide-article h2{font-size:18px}}
@media(max-width:480px){.guide-main .platform-hero{padding:21px}.guide-main .platform-hero h1{font-size:23px}.guide-article{padding:2px 18px 23px}.guide-section,.guide-related,.guide-sources{padding-top:21px}.guide-toc ol{grid-template-columns:1fr}.guide-example{padding:15px}.guide-formula{padding:13px 14px;font-size:12px}.guide-table{min-width:400px;font-size:12px}.guide-table th,.guide-table td{padding:9px 10px}.guide-figure{padding:11px 8px}.guide-figure svg text{font-size:17px}.guide-actions{display:grid;grid-template-columns:1fr}.guide-actions>a{justify-content:space-between}}
@media print{.guide-toc{display:none}.guide-main,.guide-layout{display:block;max-width:none;margin:0}.guide-main .platform-breadcrumbs{display:none}.guide-main .platform-hero{padding:0 0 15px;border:0;background:none}.guide-main .platform-hero h1{font-size:23px}.guide-main .platform-lead{font-size:11px;color:#26374b}.guide-article{padding:0;border:0;border-radius:0;font-size:10.5px;line-height:1.65}.guide-article h2{font-size:15px;break-after:avoid}.guide-section,.guide-related,.guide-sources{padding-top:15px;scroll-margin-top:0}.guide-section+.guide-section,.guide-related,.guide-sources{margin-top:15px}.guide-formula,.guide-example,.guide-figure,.guide-table-wrap{break-inside:avoid;box-shadow:none}.guide-formula{padding:9px 12px;font-size:10px}.guide-example{padding:12px}.guide-figure{max-width:145mm;margin:13px auto}.guide-table-wrap{overflow:visible}.guide-table{min-width:0;font-size:9px}.guide-table th,.guide-table td{padding:6px 8px;min-width:0}.guide-table thead{display:table-header-group}.guide-actions>a{min-height:0;padding:4px 7px;font-size:10px}.guide-sources{font-size:9px}.guide-article a{color:#174a9f}.guide-main .platform-hero,.guide-formula,.guide-example,.guide-table caption,.guide-figure{-webkit-print-color-adjust:exact;print-color-adjust:exact}@page{margin:14mm}}