:root{--sidebar-bg:#f2e7e3;--sidebar-bg-hover:#e8dad5;--sidebar-text:#66737d;--sidebar-text-active:#25333a;--sidebar-accent:#8f5e67;--sidebar-width:348px;--bg-page:#f7f1ef;--bg-surface:#fffcfb;--bg-surface-hover:#f7efec;--bg-inset:#f2e7e3;--brand-primary:#8f5e67;--brand-primary-strong:#7d4f57;--brand-primary-soft:#ead7d5;--accent-blue:#3f607a;--accent-blue-light:#dce8f2;--accent-blue-bg:#eef3f7;--accent-emerald:#566c59;--accent-emerald-light:#dfe9e1;--accent-emerald-bg:#eef4ef;--accent-amber:#85531c;--accent-amber-light:#f0ddc7;--accent-amber-bg:#fff4e7;--accent-rose:#a74858;--accent-rose-light:#f1d9df;--accent-rose-bg:#f9ecef;--accent-purple:#6f63c8;--accent-purple-light:#e7e3fb;--accent-purple-bg:#f4f1ff;--text-primary:#25333a;--text-secondary:#56636c;--text-tertiary:#7f8b92;--text-inverse:#25333a;--border-default:#ddcfca;--border-light:#e8dcd8;--border-strong:#c9b8b2;--surface-inset:#f2e7e3;--shadow-sm:none;--shadow-md:none;--shadow-lg:none;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--font-sans:"Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:ui-monospace, "SF Mono", "Cascadia Code", "Consolas", monospace;--reading-measure:40ic;--reading-measure-wide:46ic;--zh-body-leading:1.78;--zh-body-leading-loose:1.84;--zh-body-leading-dense:1.68;--zh-heading-leading:1.24;--zh-section-leading:1.36;--zh-label-spacing:.02em;--content-max-width:1240px;--content-padding:48px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);line-height:var(--zh-body-leading);letter-spacing:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;word-break:normal;overflow-wrap:break-word;line-break:strict;height:100vh;font-size:18px;overflow:hidden}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}a{color:var(--accent-blue);text-decoration:none}a:hover{text-decoration:underline}.app-container{width:100vw;height:100vh;display:flex}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--sidebar-bg);z-index:100;box-shadow:none;border-right:1px solid #8f5e671f;flex-direction:column;transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex}.sidebar-header{background:var(--sidebar-bg);border-bottom:1px solid #8f5e671a;padding:28px 22px 18px}.sidebar-brand{align-items:center;gap:14px;margin-bottom:22px;padding:4px 0;display:flex}.brand-icon{flex-shrink:0;justify-content:center;align-items:center;width:62px;height:62px;padding:0;display:flex;overflow:hidden}.brand-icon img{object-fit:contain;filter:drop-shadow(0 14px 22px #562b3b24);width:100%;height:100%;display:block}.sidebar-brand h1{color:var(--text-inverse);letter-spacing:0;font-size:1.6rem;font-weight:800;line-height:var(--zh-heading-leading)}.brand-subtitle{color:var(--sidebar-text);letter-spacing:.01em;margin-top:4px;font-size:1.04rem;font-weight:600}.search-box{position:relative}.search-icon{width:16px;height:16px;color:var(--sidebar-text);pointer-events:none;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.search-box input{background:var(--bg-surface);width:100%;color:var(--text-primary);font-size:1rem;font-family:var(--font-sans);border:1px solid #8f5e6724;border-radius:12px;padding:12px 44px 12px 38px;transition:all .2s}.search-box input:focus{background:var(--bg-surface);border-color:var(--sidebar-accent);outline:none;box-shadow:0 0 0 3px #8f5e6724}.search-box input::placeholder{color:var(--sidebar-text);opacity:.7}.search-shortcut{font-family:var(--font-mono);color:var(--sidebar-text);background:var(--bg-surface);pointer-events:none;border:1px solid #8f5e671f;border-radius:4px;padding:2px 6px;font-size:.9rem;position:absolute;top:50%;right:10px;transform:translateY(-50%)}.sidebar-priority{border-bottom:1px solid #8f5e6714;margin-bottom:20px;padding:0 4px 16px}.sidebar-priority-label{letter-spacing:var(--zh-label-spacing);color:var(--text-tertiary);margin:0 8px 8px;font-size:.98rem;font-weight:700;display:block}.nav-item-priority{background:var(--brand-primary-soft);color:var(--text-primary);border:1px solid #8f5e671f;padding-left:18px;font-weight:700}.nav-item-priority:hover{background:#e4cfcc}.sidebar-nav{scrollbar-width:thin;scrollbar-color:#ffffff1a transparent;flex:1;padding:16px 14px 28px;overflow-y:auto}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}.nav-group{border-bottom:1px solid #8f5e6714;margin-bottom:10px;padding-bottom:10px}.nav-group-toggle{width:100%;color:var(--sidebar-text);letter-spacing:.01em;transform:translateX(var(--nav-shift,0px));will-change:transform;border-radius:10px;align-items:center;gap:10px;padding:10px 12px;font-size:1.12rem;font-weight:700;transition:all .15s;display:flex}.nav-group-toggle:hover{background:var(--sidebar-bg-hover);color:var(--sidebar-text-active)}.nav-group-toggle:focus-visible,.nav-item:focus-visible,.nav-external:focus-visible,.mobile-menu-toggle:focus-visible{outline-offset:2px;outline:2px solid #6f63c8eb}.nav-group-icon{display:none}.nav-group-label{text-align:left;flex:1}.nav-group-count{color:var(--sidebar-text);border-radius:var(--radius-full);text-align:center;background:#ffffffa3;min-width:28px;padding:3px 8px;font-size:.98rem;font-weight:700}.nav-group-arrow{opacity:.5;flex-shrink:0;width:16px;height:16px;transition:transform .2s}.nav-group-toggle.open .nav-group-arrow,.nav-group-toggle.expanded .nav-group-arrow{transform:rotate(180deg)}.nav-group-items{opacity:0;max-height:0;padding-left:8px;transition:max-height .3s;overflow:hidden;transform:translateY(-4px)}.nav-group-items.open,.nav-group-items.expanded{opacity:1;max-height:2000px;transform:translateY(0)}.nav-item{text-align:left;width:100%;color:var(--sidebar-text);cursor:pointer;font-size:1.08rem;font-weight:550;font-family:var(--font-sans);transform:translateX(var(--nav-shift,0px));will-change:transform;background:0 0;border:none;border-radius:10px;padding:10px 12px 10px 22px;line-height:1.5;transition:all .18s;display:block;position:relative}.nav-item:hover{color:var(--sidebar-text-active);background:var(--sidebar-bg-hover)}.nav-item.active{color:var(--sidebar-text-active);background:#ead7d5;font-weight:700}.nav-item[aria-current=page]{border:1px solid #8f5e6724}.nav-item.active:before{content:"";background:var(--sidebar-accent);border-radius:2px;width:4px;height:22px;position:absolute;top:50%;left:8px;transform:translateY(-50%)}.nav-item.hidden{display:none}.nav-external{color:var(--sidebar-text);border-radius:10px;padding:9px 12px 9px 22px;font-size:1rem;font-weight:500;line-height:1.5;text-decoration:none;transition:all .18s;display:block}.nav-external:hover{color:var(--sidebar-text-active);background:var(--sidebar-bg-hover);text-decoration:none}.sidebar-footer{border-top:1px solid #8f5e671a;padding:18px 22px 22px}.sidebar-footer p{color:#94a3b899;text-align:left;font-size:.98rem;line-height:1.6}.main-panel{background:var(--bg-page);flex-direction:column;flex:1;min-width:0;display:flex}.content-scroll{scroll-behavior:smooth;flex:1;overflow-y:auto}.content-area{max-width:var(--content-max-width);padding:34px var(--content-padding) 88px;margin:0 auto;transition:opacity .16s,transform .16s}.content-area[aria-busy=true]{pointer-events:none}.content-area :where(h1,h2,h3,h4,p,li){text-wrap:pretty}.article-header{border-bottom:1px solid var(--border-default);margin-bottom:40px;padding-bottom:24px}.article-header h1{font-size:2rem;font-weight:900;line-height:var(--zh-heading-leading);color:var(--text-primary);letter-spacing:0;margin-bottom:8px}.article-header .subtitle{color:var(--text-secondary);font-size:1.06rem;line-height:var(--zh-body-leading);max-width:var(--reading-measure)}.badge{border-radius:var(--radius-full);align-items:center;gap:4px;padding:3px 10px;font-size:.92rem;font-weight:600;display:inline-flex}.badge-blue{background:var(--accent-blue-light);color:var(--accent-blue)}.badge-emerald{background:var(--accent-emerald-light);color:var(--accent-emerald)}.badge-amber{background:var(--accent-amber-light);color:var(--accent-amber)}.badge-rose{background:var(--accent-rose-light);color:var(--accent-rose)}.badge-purple{background:var(--accent-purple-light);color:var(--accent-purple)}.info-box{font-size:1.02rem;line-height:var(--zh-body-leading-loose);border:1px solid var(--info-border,var(--border-light));background:var(--info-bg,var(--bg-surface));max-width:none;color:var(--text-secondary);border-radius:22px;margin-bottom:30px;padding:20px 22px}.info-box-blue{--info-accent:var(--accent-blue);--info-border:#dbe5ec;--info-bg:#f7fafce0;--info-heading:#3d5a6e}.info-box-emerald{--info-accent:var(--accent-emerald);--info-border:#dce5de;--info-bg:#f7faf7e0;--info-heading:#556a58}.info-box-amber{--info-accent:var(--accent-amber);--info-border:#eadcca;--info-bg:#fffaf4e6;--info-heading:#80511f}.info-box-rose{--info-accent:var(--accent-rose);--info-border:#ead8dd;--info-bg:#fcf7f8e6;--info-heading:#925362}.info-box-purple{--info-accent:var(--accent-purple);--info-border:#e1def0;--info-bg:#faf9fde6;--info-heading:#685fa8}.info-box h4{color:var(--info-heading,var(--text-primary));margin-bottom:10px;font-size:1.08rem;font-weight:700;line-height:1.45}.info-box p,.info-box ul,.info-box ol{color:var(--text-secondary)}.info-box strong{color:var(--text-primary)}.info-box p{margin-bottom:8px}.info-box p+p{margin-top:2px}.info-box p:last-child{margin-bottom:0}.info-box ul,.info-box ol{margin:10px 0 0;padding-left:22px}.info-box .source-badges{margin-top:12px;margin-bottom:0}.reader-guide{background:var(--bg-surface);box-shadow:var(--shadow-sm);border:1px solid #8f5e671f;border-radius:20px;margin-bottom:28px;padding:22px}.is-immersive-reading .reader-guide{background:#fffcfbdb;margin-bottom:34px;padding:24px}.reader-guide-header{margin-bottom:16px}.reader-guide-eyebrow{border-radius:var(--radius-full);background:var(--brand-primary-soft);color:var(--brand-primary);letter-spacing:var(--zh-label-spacing);align-items:center;margin-bottom:10px;padding:4px 10px;font-size:.9rem;font-weight:700;display:none}.reader-guide-header h2{font-size:1.5rem;line-height:var(--zh-section-leading);color:var(--text-primary);margin-bottom:8px}.reader-guide-header p{color:var(--text-secondary);line-height:var(--zh-body-leading);max-width:var(--reading-measure-wide);font-size:1.02rem}.reader-guide-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin-bottom:14px;display:grid}.is-immersive-reading .reader-guide-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.reader-guide-card{border:1px solid var(--border-light);background:var(--bg-surface);border-radius:16px;padding:16px}.is-immersive-reading .reader-guide-card{background:#ffffff94}.reader-guide-card h3{color:var(--text-primary);margin-bottom:6px;font-size:1.04rem;line-height:1.45}.reader-guide-card p{color:var(--text-secondary);line-height:var(--zh-body-leading-dense);font-size:1rem}.reader-guide-alert{background:var(--accent-amber-bg);color:var(--text-primary);border:1px solid #85531c24;border-radius:16px;gap:4px;margin-bottom:8px;padding:14px 16px;display:grid}.reader-guide-alert strong{color:var(--accent-amber);font-size:1rem}.reader-guide-alert span{line-height:var(--zh-body-leading-dense);max-width:var(--reading-measure-wide);font-size:1rem}.reader-guide-source{display:none}.immersive-reading-shell{grid-template-columns:224px minmax(0,1fr);align-items:start;gap:30px;display:grid}.immersive-reading-shell:not(.has-reading-toc){grid-template-columns:minmax(0,1fr)}.immersive-reading-body{gap:30px;min-width:0;display:grid}.reading-toc{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:linear-gradient(#ffffffbd,#fff9f7eb),#fffcfbdb;border:1px solid #8f5e671f;border-radius:22px;gap:12px;max-height:calc(100vh - 72px);padding:16px 14px 14px;display:grid;position:sticky;top:22px;box-shadow:0 18px 34px #7d4f5714}.reading-toc-header{gap:6px;display:grid}.reading-toc-label{color:var(--brand-primary);letter-spacing:.12em;text-transform:uppercase;font-size:.78rem;font-weight:800}.reading-toc-title{color:var(--text-primary);font-size:.98rem;font-weight:800;line-height:1.45}.reading-toc-note{color:var(--text-secondary);font-size:.86rem;line-height:1.55}.reading-toc-list{scrollbar-width:thin;scrollbar-color:#8f5e674d transparent;gap:6px;padding-right:4px;display:grid;overflow-y:auto}.reading-toc-list::-webkit-scrollbar{width:8px}.reading-toc-list::-webkit-scrollbar-track{background:0 0}.reading-toc-list::-webkit-scrollbar-thumb{background:#8f5e674d;border-radius:999px}.reading-toc-link{width:100%;color:var(--text-secondary);text-align:left;background:#ffffff57;border:1px solid #0000;border-left-width:3px;border-radius:14px;padding:10px 12px;font-family:inherit;font-size:.92rem;line-height:1.45;text-decoration:none;transition:background .18s,color .18s,border-color .18s,transform .18s}.reading-toc-link:hover,.reading-toc-link:focus-visible,.reading-toc-link.is-active{color:var(--text-primary);border-color:#8f5e672e;border-left-color:var(--brand-primary);background:linear-gradient(#fffcfbf5,#f6ece9f5);outline:none;text-decoration:none}.reading-toc-link:hover,.reading-toc-link:focus-visible{transform:translateY(-1px)}.reading-anchor-block{gap:0;display:grid}.progressive-section{background:#fffcfbbd;border:1px solid #8f5e6721;border-radius:18px;margin-bottom:18px;overflow:clip}.progressive-section summary{color:var(--text-primary);cursor:pointer;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;list-style:none;display:flex}.progressive-section summary::-webkit-details-marker{display:none}.progressive-section summary:after{content:"+";border-radius:var(--radius-full);width:28px;height:28px;color:var(--brand-primary);background:#8f5e6714;flex:none;justify-content:center;align-items:center;font-weight:800;line-height:1;display:inline-flex}.progressive-section[open] summary:after{content:"−"}.progressive-section summary span{font-weight:800;line-height:var(--zh-section-leading)}.progressive-section[open] summary{border-bottom:1px solid var(--border-light)}.progressive-section-body{padding:20px}.progressive-section-body>.content-section,.progressive-section-body>.info-box,.progressive-section-body>.qa-section{margin-bottom:0}.section-heading{color:var(--text-primary);border-bottom:2px solid var(--border-default);align-items:center;gap:8px;margin-bottom:16px;padding-bottom:8px;font-size:1.2rem;font-weight:800;display:flex}.section-heading .icon{font-size:1.1rem}.data-list{list-style:none}.data-list li{border-bottom:1px solid var(--border-default);font-size:1rem;line-height:var(--zh-body-leading-dense);align-items:baseline;gap:12px;padding:12px 16px;display:flex}.data-list li:last-child{border-bottom:none}.data-list .label{color:var(--text-primary);flex-shrink:0;min-width:100px;font-weight:700}.data-list .value{color:var(--text-secondary)}.prose{font-size:1.02rem;line-height:var(--zh-body-leading-loose);color:var(--text-secondary);max-width:var(--reading-measure)}.prose h3{color:var(--text-primary);font-size:1.22rem;font-weight:700;line-height:var(--zh-section-leading);margin:28px 0 12px}.prose h4{color:var(--text-primary);margin:20px 0 8px;font-size:1.08rem;font-weight:700;line-height:1.45}.prose p{margin-bottom:12px}.prose ul,.prose ol{margin-bottom:12px;padding-left:24px}.prose li{margin-bottom:6px}.prose strong{color:var(--text-primary);font-weight:700}.prose code{font-family:var(--font-mono);background:var(--bg-inset);color:var(--accent-rose);border-radius:4px;padding:2px 6px;font-size:.85em}.flow-timeline{flex-wrap:wrap;align-items:stretch;gap:0;margin:16px 0 24px;display:flex}.flow-step{text-align:center;background:var(--bg-surface);border:1px solid var(--border-default);flex:1;min-width:120px;padding:16px;position:relative}.flow-step:first-child{border-radius:var(--radius-md) 0 0 var(--radius-md)}.flow-step:last-child{border-radius:0 var(--radius-md) var(--radius-md) 0}.flow-step:not(:last-child){border-right:none}.flow-step .step-label{color:var(--accent-blue);letter-spacing:var(--zh-label-spacing);margin-bottom:4px;font-size:.9rem;font-weight:700;display:block}.flow-step .step-value{color:var(--text-primary);font-size:.95rem;font-weight:700}.flow-step:not(:last-child):after{content:"→";color:var(--text-tertiary);z-index:1;background:var(--bg-page);border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:1rem;display:flex;position:absolute;top:50%;right:-9px;transform:translateY(-50%)}.flow-note{color:var(--accent-amber);background:var(--accent-amber-bg);border-radius:var(--radius-sm);margin-top:8px;padding:8px 12px;font-size:.95rem;font-weight:600}.two-col{grid-template-columns:1fr 1fr;gap:32px;margin-top:32px;display:grid}@media (width<=768px){.two-col{grid-template-columns:1fr;gap:24px}}.learning-card-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:18px;display:grid}.learning-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:none;padding:20px 22px}.learning-card h4{color:var(--text-primary);margin-bottom:8px;font-size:1.02rem;font-weight:700}.learning-card p,.learning-card ul{color:var(--text-secondary);font-size:.98rem;line-height:var(--zh-body-leading)}.learning-card ul{margin-top:8px;padding-left:20px}.equipment-source-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:18px;display:grid}.equipment-source-card{border-radius:var(--radius-md);border:1px solid var(--border-default);background:var(--bg-surface);gap:10px;padding:20px 22px;text-decoration:none;transition:border-color .2s,transform .2s,background .2s;display:grid}.equipment-source-card:hover,.equipment-source-card:focus-visible{border-color:var(--border-strong);background:#fdf8f6;outline:none;transform:translateY(-1px)}.equipment-source-badge{border-radius:var(--radius-full);width:fit-content;color:var(--brand-primary);letter-spacing:var(--zh-label-spacing);background:#fffcfbeb;border:1px solid #8f5e6724;align-items:center;padding:4px 10px;font-size:.82rem;font-weight:800;display:inline-flex}.equipment-source-card h4{color:var(--text-primary);font-size:1.04rem;line-height:1.42}.equipment-source-card p{color:var(--text-secondary);font-size:.98rem;line-height:var(--zh-body-leading)}.equipment-source-link{color:var(--accent-blue);font-size:.94rem;font-weight:700}.reading-note{max-width:var(--reading-measure);font-size:.98rem;line-height:var(--zh-body-leading);color:var(--text-secondary);margin-top:12px}.data-table-wrapper{-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;border:1px solid var(--border-light);background:var(--bg-surface);border-radius:18px;margin:18px 0;overflow-x:auto}.data-table{border-collapse:collapse;table-layout:auto;width:max(100%,720px);min-width:720px;font-size:.95rem}.data-table th{text-align:left;color:var(--text-tertiary);border-bottom:1px solid var(--border-light);white-space:nowrap;letter-spacing:.04em;vertical-align:bottom;background:#f2e7e394;padding:14px 16px 12px;font-size:.83rem;font-weight:700}.data-table td{border-bottom:1px solid var(--border-light);color:var(--text-secondary);line-height:var(--zh-body-leading-dense);vertical-align:top;padding:14px 16px}.data-table tr:last-child td{border-bottom:none}.data-table td strong{color:var(--text-primary)}.data-table td .guide-tag+.guide-tag{margin-left:6px}.data-table tr:hover td{background:#8f5e6708}.alert{border-radius:var(--radius-sm);margin-bottom:12px;padding:12px 16px;font-size:1rem;font-weight:600}.alert-danger{background:var(--accent-rose-bg);color:var(--accent-rose);border:1px solid var(--accent-rose-light)}.alert-warning{background:var(--accent-amber-bg);color:var(--accent-amber);border:1px solid var(--accent-amber-light)}.alert-info{background:var(--accent-blue-bg);color:var(--accent-blue);border:1px solid var(--accent-blue-light)}.alert-success{background:var(--accent-emerald-bg);color:var(--accent-emerald);border:1px solid 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