:root{font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;color:#333831;background:#f5f4ed;font-synthesis:none;font-weight:400;--paper:#faf9f4;--ink:#333831;--muted:#7d8075;--line:#dfdfd4;--accent:#52664e;--soft:#eaf0e5}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.35}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #859d78;outline-offset:3px}button{color:inherit}a{color:inherit}.handbook-app{min-height:100vh}.handbook-header{height:94px;display:flex;align-items:center;justify-content:space-between;padding:0 34px;border-bottom:1px solid var(--line);background:var(--paper);gap:20px}.handbook-brand{display:flex;align-items:center;gap:15px}.handbook-brand-symbol{width:42px;height:42px;border:1px solid #999f8d;display:grid;place-items:center;color:var(--accent);font-size:27px}.handbook-eyebrow{font-size:10px;letter-spacing:2.4px;margin:0 0 6px;color:var(--muted)}.handbook-brand h1{font-size:22px;font-weight:600;letter-spacing:1px;margin:0}.handbook-header-right{display:flex;align-items:center;gap:18px}.handbook-total{font-size:12px;color:var(--muted)}.handbook-browse-button{display:none;border:1px solid var(--line);padding:10px 13px;background:white;border-radius:5px;font-size:13px}.handbook-workspace{display:grid;grid-template-columns:305px minmax(0,1fr);max-width:1920px;margin:auto}.handbook-sidebar{height:calc(100vh - 94px);position:sticky;top:0;display:flex;flex-direction:column;background:#eeeee6;border-right:1px solid var(--line);min-height:400px}.handbook-sidebar-top{padding:28px 22px 0}.handbook-sidebar h2{font-size:17px;font-weight:600;margin:0 0 7px}.handbook-sidebar-top>p{margin:0 0 23px;font-size:12px;color:var(--muted);line-height:1.7}.handbook-search{display:flex;align-items:center;gap:9px;background:var(--paper);border:1px solid #d6d8ca;border-radius:5px;padding:0 10px;height:41px}.handbook-search>span:first-child{font-size:24px;color:var(--muted);line-height:1}.handbook-search input{width:100%;min-width:0;padding:9px 0;background:transparent;border:0;outline:0;font-size:12px;color:var(--ink)}.handbook-search input::placeholder{color:#8d9085}.handbook-chapter-select{display:block;margin:10px 0 15px}.handbook-chapter-select select{background:transparent;border:1px solid #d6d8ca;border-radius:5px;width:100%;height:37px;padding:0 10px;font-size:12px;color:#59614f}.handbook-filter-line{display:flex;align-items:center;justify-content:space-between;min-height:20px;margin-bottom:12px;font-size:11px;color:var(--muted)}.handbook-filter-line button{padding:0;border:0;background:transparent;color:var(--accent);font-size:11px}.handbook-node-list{overflow-y:auto;flex:1;padding:0 11px 15px;scrollbar-width:thin;scrollbar-color:#c2c6b7 transparent}.handbook-node-card{display:flex;align-items:flex-start;width:100%;gap:11px;text-align:left;border:1px solid transparent;background:transparent;padding:16px 11px;border-radius:5px;transition:background .15s,border .15s}.handbook-node-card:hover{background:#f7f7f0}.handbook-node-card.is-selected{background:#fafaf4;border-color:#d3d9c9;box-shadow:0 2px 3px #33383104}.handbook-node-number{font-size:11px;letter-spacing:.8px;color:#989c8e;min-width:19px;padding-top:3px;font-variant-numeric:tabular-nums}.handbook-node-card-copy{flex:1;min-width:0}.handbook-node-card-copy strong{font-size:13px;line-height:1.65;display:block;font-weight:500}.handbook-node-card-copy>span{display:block;color:var(--muted);font-size:10px;margin-top:7px;line-height:1.5}.handbook-node-arrow{font-size:15px;color:#8e9c80;margin-top:2px;opacity:0}.handbook-node-card.is-selected .handbook-node-arrow,.handbook-node-card:hover .handbook-node-arrow{opacity:1}.handbook-sidebar-footer{margin:0;padding:15px 24px 18px;border-top:1px solid var(--line);font-size:10px;color:#8b8f80;line-height:1.8}.handbook-main{padding:30px 38px 36px;min-width:0}.handbook-detail-header{display:flex;gap:20px;align-items:center;justify-content:space-between;margin-bottom:23px;min-height:94px}.handbook-detail-header>div:first-child{min-width:0}.handbook-detail-meta{display:flex;align-items:center;gap:12px;margin:0 0 10px;font-size:11px;color:var(--accent)}.handbook-detail-meta span{border-left:1px solid #cdd2c2;padding-left:12px;color:var(--muted)}.handbook-detail-header h2{font-size:26px;line-height:1.45;font-weight:600;letter-spacing:.3px;margin:0 0 9px;overflow-wrap:anywhere}.handbook-detail-description{margin:0;max-width:850px;font-size:12px;line-height:1.8;color:var(--muted)}.handbook-prev-next{display:flex;gap:8px;flex-shrink:0}.handbook-icon-button{width:37px;height:37px;background:transparent;border:1px solid #d1d5c6;border-radius:50%;font-size:17px}.handbook-icon-button:hover:enabled{background:#e7eadf}.handbook-display-section{border:1px solid var(--line);background:var(--paper);border-radius:8px;overflow:hidden}.handbook-display-top{height:59px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line);gap:12px}.handbook-tabs{display:flex;align-self:stretch;gap:25px}.handbook-tabs button{background:transparent;border:0;border-bottom:2px solid transparent;padding:0 2px;font-size:13px;color:var(--muted)}.handbook-tabs button.is-active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.handbook-display-caption{font-size:10px;color:#8b8e81}.handbook-model-panel{min-height:500px;position:relative}.handbook-model-panel>div{width:100%}.handbook-source-panel{min-height:500px;display:flex;justify-content:center;padding:20px;background:#eeeee7}.handbook-source-image-button{position:relative;border:0;background:#fff;display:flex;align-items:center;justify-content:center;max-width:100%;padding:0;box-shadow:0 4px 16px #33383112}.handbook-source-image-button img{display:block;max-width:100%;max-height:660px;object-fit:contain}.handbook-source-image-button>span{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);padding:8px 12px;border-radius:4px;color:#fff;background:#333831bd;font-size:11px;white-space:nowrap}.handbook-detail-bottom{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:28px;margin-top:27px}.handbook-section-heading{display:flex;align-items:baseline;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);gap:15px}.handbook-section-heading h3,.handbook-learning-note h3{margin:0;font-size:14px;font-weight:600}.handbook-section-heading>span{font-size:10px;color:var(--muted)}.handbook-components ol{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px;list-style:none;padding:19px 0 0;margin:0}.handbook-components li{display:flex;gap:11px;min-width:0}.handbook-layer-number{flex-shrink:0;width:24px;height:24px;border:1px solid #d8dccc;border-radius:50%;display:grid;place-items:center;font-size:9px;color:#7d886f}.handbook-components li>div{min-width:0}.handbook-components li strong{display:block;font-size:12px;font-weight:500;line-height:1.5}.handbook-components li div>span{display:block;font-size:10px;color:var(--muted);line-height:1.6;margin-top:3px}.handbook-learning-note{padding:22px 23px;background:#e9ece0;border-radius:6px;align-self:start}.handbook-learning-symbol{font-size:22px;color:#7a8a69;display:block;margin-bottom:14px}.handbook-learning-note p{font-size:11px;line-height:1.9;color:#7a816f;margin:10px 0 17px}.handbook-learning-note button{background:transparent;border:0;border-bottom:1px solid #aeb89e;padding:0 0 7px;font-size:11px;color:var(--accent);display:flex;justify-content:space-between;gap:22px}.handbook-empty{padding:35px 15px;text-align:center;font-size:13px;color:var(--muted)}.handbook-empty p{margin:0 0 8px}.handbook-empty span{font-size:11px}.handbook-layer-empty{font-size:12px;color:var(--muted)}.handbook-lightbox{position:fixed;inset:0;z-index:100;background:#282c29f2;display:flex;flex-direction:column}.handbook-lightbox-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 25px;color:#efefe7;font-size:13px;gap:20px}.handbook-lightbox-bar button{flex-shrink:0;background:#ffffff15;border:1px solid #ffffff30;border-radius:4px;padding:8px 14px;font-size:12px;color:#fff}.handbook-lightbox-scroll{overflow:auto;flex:1;padding:10px 20px 30px;display:flex;align-items:flex-start;justify-content:center;overscroll-behavior:contain}.handbook-lightbox-scroll img{width:auto;height:auto;max-width:100%;display:block;background:#fff;box-shadow:0 5px 40px #0005}.handbook-loading{padding:80px 30px;max-width:720px;margin:auto;text-align:center}.handbook-loading h1{font-size:30px;font-weight:500}.handbook-loading p{font-size:14px;line-height:1.8;color:var(--muted)}.handbook-mark{font-size:12px;letter-spacing:4px;color:var(--accent)}.handbook-button{padding:10px 18px;background:var(--accent);border:0;border-radius:5px;color:#fff}.handbook-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.handbook-menu-backdrop{display:none}
@media(min-width:1600px){.handbook-main{padding-left:55px;padding-right:55px}.handbook-workspace{grid-template-columns:330px minmax(0,1fr)}.handbook-detail-header h2{font-size:30px}.handbook-model-panel,.handbook-source-panel{min-height:560px}}
@media(max-width:1180px){.handbook-workspace{grid-template-columns:270px minmax(0,1fr)}.handbook-main{padding:25px 25px 30px}.handbook-detail-bottom{grid-template-columns:1fr;gap:22px}.handbook-learning-note{display:none}.handbook-header{padding:0 25px}.handbook-model-panel,.handbook-source-panel{min-height:470px}}
@media(max-width:850px){.handbook-header{height:80px;padding:0 21px}.handbook-brand h1{font-size:19px}.handbook-brand-symbol{width:36px;height:36px;font-size:24px}.handbook-eyebrow{font-size:8px;letter-spacing:1.7px}.handbook-total{display:none}.handbook-browse-button{display:block}.handbook-workspace{display:block}.handbook-sidebar{position:fixed;top:80px;bottom:0;left:0;width:310px;height:calc(100dvh - 80px);z-index:41;transform:translateX(-100%);transition:transform .2s ease;min-height:0;box-shadow:7px 0 30px #33383112}.handbook-sidebar.is-open{transform:translateX(0)}.handbook-menu-backdrop{display:block;position:fixed;inset:80px 0 0;z-index:40;background:#33383166;border:0}.handbook-main{padding:24px 24px 32px}.handbook-detail-header h2{font-size:25px}.handbook-model-panel,.handbook-source-panel{min-height:480px}.handbook-source-image-button img{max-height:620px}.handbook-components ol{grid-template-columns:1fr 1fr}.handbook-detail-bottom{margin-top:22px}.handbook-lightbox-bar{padding:12px 17px}.handbook-lightbox-scroll{padding:0 7px 25px}}
@media(max-width:520px){.handbook-header{height:71px;padding:0 15px;gap:8px}.handbook-brand{gap:9px}.handbook-brand-symbol{width:30px;height:30px;font-size:20px}.handbook-brand h1{font-size:16px;letter-spacing:.2px}.handbook-eyebrow{font-size:7px;letter-spacing:1.15px;margin-bottom:5px}.handbook-browse-button{font-size:11px;padding:8px 9px}.handbook-browse-button span{margin-left:3px}.handbook-sidebar{top:71px;height:calc(100dvh - 71px);width:min(310px,88vw)}.handbook-menu-backdrop{top:71px}.handbook-main{padding:20px 13px 28px}.handbook-detail-header{align-items:flex-start;gap:10px;margin-bottom:18px;min-height:0}.handbook-detail-header h2{font-size:21px;line-height:1.55;margin-bottom:8px}.handbook-detail-meta{font-size:10px;gap:8px;margin-bottom:7px;flex-wrap:wrap}.handbook-detail-meta span{padding-left:8px}.handbook-detail-description{font-size:11px;line-height:1.8}.handbook-prev-next{gap:5px;padding-top:20px}.handbook-icon-button{width:30px;height:30px;font-size:15px}.handbook-display-top{height:51px;padding:0 14px;gap:8px}.handbook-tabs{gap:20px}.handbook-tabs button{font-size:12px}.handbook-display-caption{font-size:9px}.handbook-model-panel{min-height:455px}.handbook-source-panel{min-height:420px;padding:11px}.handbook-source-image-button img{max-height:600px}.handbook-components ol{gap:17px 13px;padding-top:17px}.handbook-components li{gap:8px}.handbook-components li strong{font-size:11px}.handbook-components li div>span{font-size:9px}.handbook-section-heading h3{font-size:13px}.handbook-section-heading>span{font-size:9px}.handbook-detail-bottom{margin-top:21px}.handbook-lightbox-bar{font-size:11px;align-items:flex-start;line-height:1.7}.handbook-lightbox-bar button{font-size:11px;padding:6px 10px}.handbook-lightbox-scroll img{max-width:none;width:900px}.handbook-lightbox-scroll{justify-content:flex-start}.handbook-learning-note{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Reading controls remain comfortably sized on classroom displays and phones. */
.handbook-book-button{border:1px solid #cdd3c3;border-radius:5px;padding:10px 15px;min-height:42px;background:#edf1e6;color:var(--accent);font-size:14px;white-space:nowrap}.handbook-book-button:hover{background:#e0e8d7}.handbook-browse-button{font-size:14px;min-height:42px}.handbook-search{height:44px}.handbook-search input{font-size:14px}.handbook-chapter-select select{font-size:14px;height:42px}.handbook-node-card-copy strong{font-size:14px}.handbook-node-card-copy>span{font-size:12px}.handbook-sidebar-top>p{font-size:13px}.handbook-filter-line{font-size:12px}.handbook-filter-line button{font-size:13px}.handbook-detail-description{font-size:14px}.handbook-detail-meta{font-size:12px}.handbook-tabs button{font-size:14px}.handbook-display-caption{font-size:12px}.handbook-components li strong{font-size:14px}.handbook-components li div>span{font-size:12px}.handbook-section-heading h3,.handbook-learning-note h3{font-size:16px}.handbook-section-heading>span{font-size:12px}.handbook-learning-note p{font-size:13px}.handbook-learning-note button{font-size:14px}.handbook-source-pages{display:flex;flex-wrap:wrap;align-items:stretch;gap:9px;padding:15px 20px;border-bottom:1px solid var(--line);background:#f8f8f1}.handbook-source-pages button{display:flex;flex-direction:column;gap:4px;border:1px solid #d6dbcd;border-radius:5px;background:#f8f9f3;padding:9px 13px;text-align:left;font-size:14px;min-height:48px}.handbook-source-pages button.is-active{background:#e4edda;border-color:#8f9e80;color:#455d3d}.handbook-source-pages button span{font-size:11px;color:var(--muted)}.handbook-source-image-button>span{font-size:13px}.handbook-lightbox-bar{font-size:14px}.handbook-lightbox-bar button{min-height:42px;font-size:14px}.handbook-book-page-label{display:block;margin-top:5px;color:#b9c0b3;font-size:12px;font-weight:400}.handbook-book-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 25px 14px;border-bottom:1px solid #ffffff20;background:#30362f}.handbook-book-pagination{display:flex;align-items:center;gap:15px;flex:1;max-width:900px}.handbook-book-toolbar button{flex-shrink:0;border:1px solid #ffffff30;background:#ffffff0c;border-radius:4px;min-height:42px;padding:7px 12px;color:#f3f4ed;font-size:14px}.handbook-book-toolbar button:hover:enabled{background:#ffffff20}.handbook-book-pagination input{width:100%;min-width:80px;accent-color:#9fb08d;cursor:pointer}.handbook-book-zoom{display:flex;align-items:center;gap:7px}.handbook-book-zoom button:first-child,.handbook-book-zoom button:last-child{width:42px;padding:0;font-size:22px}.handbook-book-scroll{min-height:0;overflow:auto;flex:1;padding:20px;overscroll-behavior:contain;cursor:grab;scrollbar-width:thin;scrollbar-color:#7e8876 #282c29}.handbook-book-scroll:active{cursor:grabbing}.handbook-book-scroll img{display:block;margin:0 auto;background:#fff;box-shadow:0 5px 40px #0005;user-select:none;-webkit-user-drag:none}.handbook-book-hint{padding:10px 20px;margin:0;color:#b0b9a8;font-size:12px;text-align:center;border-top:1px solid #ffffff15}.handbook-book-reader .handbook-lightbox-bar strong{font-size:17px;font-weight:500}
@media(max-width:850px){.handbook-book-toolbar{padding:10px 17px 14px;flex-wrap:wrap;gap:12px}.handbook-book-pagination{width:100%;max-width:none;flex-basis:100%}.handbook-book-zoom{margin-left:auto}.handbook-book-scroll{padding:12px}}
@media(max-width:520px){.handbook-header{height:112px;padding:10px 15px;flex-wrap:wrap;gap:6px}.handbook-brand{flex-basis:100%}.handbook-brand h1{font-size:18px}.handbook-eyebrow{font-size:8px}.handbook-header-right{width:100%;gap:10px;justify-content:space-between}.handbook-book-button,.handbook-browse-button{font-size:14px;padding:7px 13px;min-height:36px}.handbook-sidebar{top:112px;height:calc(100dvh - 112px)}.handbook-menu-backdrop{top:112px}.handbook-detail-description{font-size:14px}.handbook-detail-meta{font-size:12px}.handbook-tabs button{font-size:14px}.handbook-display-caption{font-size:10px}.handbook-components li strong{font-size:14px}.handbook-components li div>span{font-size:12px}.handbook-section-heading h3{font-size:16px}.handbook-section-heading>span{font-size:11px}.handbook-components ol{grid-template-columns:1fr}.handbook-source-pages{padding:12px;gap:8px}.handbook-source-pages button{font-size:14px;padding:8px 10px}.handbook-source-image-button>span{font-size:12px}.handbook-lightbox-bar{font-size:13px}.handbook-lightbox-bar button{font-size:14px;min-height:40px;padding:6px 11px}.handbook-book-toolbar{padding:9px 12px 11px}.handbook-book-pagination{gap:8px}.handbook-book-pagination button{padding:7px 9px;font-size:14px}.handbook-book-pagination input{min-width:30px}.handbook-book-scroll{padding:9px}.handbook-book-hint{font-size:11px;line-height:1.7;padding:8px 10px}}

/* Vector construction drawings and shared selectable component names. */
.handbook-layer-select{display:flex;gap:11px;align-items:flex-start;width:100%;background:transparent;border:1px solid transparent;border-radius:5px;text-align:left;padding:6px;color:inherit}.handbook-layer-select:hover{background:#edf2e8}.handbook-layer-select.is-active{background:#fff1ef;border-color:#e1a39d}.handbook-layer-select>span:last-child{min-width:0}.handbook-layer-select>span:last-child>span{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:3px}.handbook-layer-select.is-active .handbook-layer-number{border-color:#dc3030;color:#c32626}.construction-viewer{background:#f9faf6}.construction-pages{display:flex;flex-wrap:wrap;gap:9px;padding:14px 18px;border-bottom:1px solid var(--line)}.construction-pages button{display:flex;flex-direction:column;gap:5px;border:1px solid #d6dbcd;background:#fafbf7;border-radius:5px;padding:9px 13px;text-align:left;font-size:14px}.construction-pages button.is-active{background:#e4edda;border-color:#8f9e80;color:#455d3d}.construction-pages button span{font-size:11px;color:var(--muted)}.construction-toolbar{display:flex;align-items:center;gap:12px;padding:12px 18px;border-bottom:1px solid var(--line);flex-wrap:wrap}.construction-zoom{display:flex;gap:5px}.construction-toolbar button,.construction-toolbar a{border:1px solid #cdd5c6;border-radius:5px;padding:8px 12px;background:#fff;font-size:14px;text-decoration:none;color:#3c5742;min-height:38px}.construction-zoom button:first-child,.construction-zoom button:last-child{font-size:20px;width:40px;padding:3px}.construction-zoom button:nth-child(2){min-width:70px}.construction-hint{font-size:12px;color:#76826e;flex:1}.construction-viewport{height:650px;overflow:auto;background:#e9ede5;padding:18px;overscroll-behavior:contain;cursor:grab;scrollbar-width:thin;scrollbar-color:#bac6b0 #eef0e9}.construction-viewport:active{cursor:grabbing}.construction-svg{display:block;background:#fff;user-select:none;-webkit-user-drag:none;box-shadow:0 3px 10px #33452a12;margin:0 auto}.construction-footer{margin:0;padding:11px 18px;border-top:1px solid var(--line);font-size:12px;color:#78836f;line-height:1.6}.construction-viewer.is-fullscreen{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column}.construction-viewer.is-fullscreen .construction-viewport{height:auto;flex:1;min-height:0}.construction-viewer.is-fullscreen .construction-pages{padding-top:18px}.construction-viewer.is-fullscreen .construction-toolbar{padding:12px 22px}
@media(max-width:850px){.construction-viewport{height:570px}.construction-toolbar{gap:8px}.construction-hint{order:4;flex-basis:100%}.handbook-header{height:80px}.handbook-brand{flex-basis:auto}.handbook-header-right{width:auto}.handbook-sidebar{top:80px;height:calc(100dvh - 80px)}.handbook-menu-backdrop{top:80px}}
@media(max-width:520px){.construction-viewport{height:480px;padding:8px}.construction-toolbar{padding:10px;gap:7px}.construction-toolbar button,.construction-toolbar a{font-size:13px;padding:7px 9px}.construction-pages{padding:10px}.construction-footer{padding:9px 11px;font-size:11px}.handbook-header{height:auto;min-height:80px;padding:11px 13px;flex-wrap:nowrap}.handbook-brand h1{font-size:16px}.handbook-brand-symbol{display:none}.handbook-brand{min-width:0}.handbook-eyebrow{font-size:7px;letter-spacing:.7px}.handbook-browse-button{padding:7px 8px;font-size:13px;white-space:nowrap}}

.handbook-variants{display:flex;align-items:center;flex-wrap:wrap;gap:9px;padding:13px 18px;border-bottom:1px solid var(--line);background:#eef1e8}.handbook-variants>span{font-size:13px;color:#697560;margin-right:5px}.handbook-variants button{padding:9px 13px;min-height:40px;background:#fff;border:1px solid #cbd5c2;border-radius:5px;font-size:14px;color:#49613d}.handbook-variants button.is-active{background:#365a41;color:#fff;border-color:#365a41}@media(max-width:520px){.handbook-variants{padding:11px;gap:7px}.handbook-variants button{font-size:13px;padding:8px 10px}.handbook-variants>span{flex-basis:100%}}

.handbook-edition{display:inline-block;margin-left:12px;font-size:14px;font-weight:400;color:#60734e;letter-spacing:.3px}@media(max-width:1180px){.handbook-edition{display:block;margin-left:0;margin-top:4px;font-size:13px}.handbook-brand h1{line-height:1.35}}@media(max-width:520px){.handbook-edition{font-size:11px;line-height:1.5;margin-top:3px;letter-spacing:0}}

/* A reading layout for phones, with the same complete model and drawings. */
:root{color-scheme:only light}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{background:#f5f4ed}.handbook-sidebar-close{display:none}.handbook-main{padding-bottom:max(36px,env(safe-area-inset-bottom))}.handbook-tabs button{min-height:44px}.construction-viewport{touch-action:none}.construction-toolbar button,.construction-toolbar a{min-height:44px}.construction-viewer.is-fullscreen{padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);height:100vh;height:100dvh}.construction-viewport img{touch-action:none}.handbook-detail-bottom[data-view="model"]:empty{display:none}
@media(max-width:850px){
.handbook-header{position:relative;min-height:76px;height:auto;padding:13px 18px;gap:12px}.handbook-brand{min-width:0}.handbook-brand-symbol{display:none}.handbook-brand h1{font-size:17px;letter-spacing:0}.handbook-edition{font-size:10px;margin-top:3px;line-height:1.5}.handbook-eyebrow{font-size:7px;letter-spacing:1px;margin-bottom:4px}.handbook-header-right{flex:none}.handbook-browse-button{min-height:44px;padding:8px 10px;font-size:12px;background:#eaf0e3;border-color:#cdd8c5}.handbook-sidebar{top:0;height:100vh;height:100dvh;width:min(365px,92vw);z-index:102;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);visibility:hidden;transition:transform .2s ease,visibility .2s}.handbook-sidebar.is-open{visibility:visible}.handbook-menu-backdrop{inset:0;z-index:101}.handbook-sidebar-close{display:block;position:absolute;right:17px;top:max(18px,env(safe-area-inset-top));min-height:40px;background:#fff;border:1px solid #cdd8c5;border-radius:8px;font-size:12px;padding:8px 12px}.handbook-sidebar-top{padding-top:26px}.handbook-node-card{min-height:64px}.handbook-node-card-copy strong{font-size:14px}.handbook-main{padding:17px 16px max(32px,env(safe-area-inset-bottom))}.handbook-detail-header{gap:10px;margin-bottom:15px;min-height:0;align-items:center}.handbook-detail-header h2{font-size:23px;line-height:1.45;margin-bottom:5px}.handbook-detail-meta{font-size:11px;margin-bottom:6px}.handbook-detail-description{font-size:11px;line-height:1.6}.handbook-prev-next{gap:5px;padding:0}.handbook-icon-button{width:40px;height:40px}.handbook-display-top{height:50px;padding:0 14px}.handbook-display-caption{display:none}.handbook-tabs{width:100%;gap:0}.handbook-tabs button{flex:1;font-size:14px;padding:0 8px}.handbook-display-section{border-radius:12px}.handbook-model-panel{min-height:0}.handbook-variants{padding:10px 12px;gap:6px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin}.handbook-variants>span{flex:none;font-size:11px}.handbook-variants button{flex:none;min-height:40px;font-size:12px;padding:8px 11px;max-width:260px;white-space:normal}.handbook-detail-bottom{gap:0;margin-top:18px}.handbook-detail-bottom[data-view="model"]{display:none}.handbook-components ol{grid-template-columns:1fr 1fr;gap:9px}.handbook-layer-select{border-color:#e0e5d9;background:#fafbf7;padding:10px;min-height:64px}.handbook-components li strong{font-size:12px}.handbook-layer-select>span:last-child>span{font-size:11px}.construction-pages{padding:10px;gap:7px}.construction-pages button{min-height:44px;font-size:12px;padding:8px 10px}.construction-toolbar{padding:10px;gap:7px}.construction-toolbar a{margin-left:auto}.construction-toolbar button,.construction-toolbar a{font-size:12px;padding:8px}.construction-zoom button:nth-child(2){min-width:56px}.construction-zoom button:first-child,.construction-zoom button:last-child{width:36px}.construction-hint{font-size:10px;order:4;flex-basis:100%}.construction-viewport{height:clamp(350px,60svh,620px);padding:10px}.construction-footer{font-size:10px;padding:10px 12px}.construction-viewer.is-fullscreen .construction-toolbar{padding:10px}.construction-viewer.is-fullscreen .construction-pages{padding-top:10px}
}
@media(max-width:520px){.handbook-header{padding:11px 12px;gap:9px}.handbook-brand h1{font-size:15px}.handbook-edition{font-size:9px}.handbook-eyebrow{font-size:6px;letter-spacing:.5px}.handbook-browse-button{font-size:11px;padding:8px}.handbook-main{padding:14px 10px max(28px,env(safe-area-inset-bottom))}.handbook-detail-header h2{font-size:20px}.handbook-detail-description{font-size:10px}.handbook-detail-meta{font-size:10px}.handbook-icon-button{width:34px;height:40px}.handbook-detail-header{gap:7px}.handbook-components ol{grid-template-columns:1fr}.handbook-variants>span{flex-basis:auto}.construction-toolbar{gap:5px}.construction-toolbar a{font-size:11px}.construction-zoom{gap:3px}}
@media(max-width:360px){.handbook-header{padding:10px}.handbook-brand h1{font-size:13px}.handbook-edition{font-size:8px}.handbook-browse-button{font-size:10px}.handbook-detail-header h2{font-size:18px}.handbook-prev-next{gap:3px}.handbook-icon-button{width:30px}.construction-toolbar a{order:4;margin-left:0}.construction-hint{flex-basis:auto;flex:1}}
@media(max-height:500px) and (orientation:landscape){.node-viewer.is-focused{display:grid;grid-template-columns:minmax(0,1fr) 225px;grid-template-rows:auto minmax(0,1fr) auto}.is-focused .nv-toolbar{grid-column:1/-1}.is-focused .nv-stage{grid-column:1;grid-row:2;min-height:120px}.is-focused.is-compact .nv-mobile-legend{grid-column:2;grid-row:2;max-height:none;grid-template-columns:1fr;overflow:auto}.is-focused .nv-mobile-current{grid-column:1/-1;grid-row:3;min-height:54px;padding:6px 12px}.is-focused .nv-footer{display:none}}

/* Stable standalone resource entries and QR-ready link management. */
.handbook-node-row{position:relative}.handbook-node-row .handbook-node-card{padding-right:43px}.handbook-node-open{position:absolute;right:4px;top:12px;display:grid;place-items:center;width:36px;min-height:40px;border:1px solid transparent;border-radius:6px;text-decoration:none;color:#71866b;font-size:17px}.handbook-node-open:hover,.handbook-node-open:focus-visible{border-color:#b9c9b0;background:#fff;color:#2b5b3c;outline-offset:1px}
.node-link-tools{margin:-8px 0 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.node-link-actions{display:flex;gap:8px;flex-wrap:wrap}.node-link-actions>a,.node-link-actions>button,.node-page-catalog{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:9px 13px;border:1px solid #c8d5c1;border-radius:7px;background:#fcfdf8;text-decoration:none;color:#3c5d43;font-size:12px}.node-link-actions span{font-size:10px;color:#7b9270;background:#e8eee2;border-radius:4px;padding:2px 5px}.node-link-status{font-size:11px;color:#4b7850;line-height:1.6}.node-link-status:empty{display:none}.node-page-tag{padding:4px 7px!important;border-radius:5px;background:#e5eddd;color:#526e43}.is-node-page .handbook-workspace{display:block}.is-node-page .handbook-main{max-width:1500px;margin:0 auto;padding-top:26px}.node-page-catalog{white-space:nowrap}
.node-links-overlay{position:fixed;inset:0;z-index:180;display:flex;align-items:center;justify-content:center;padding:20px}.node-links-backdrop{position:absolute;inset:0;background:#1b2d208c;border:0;backdrop-filter:blur(3px)}.node-links-dialog{position:relative;width:min(1040px,100%);max-height:90dvh;background:#fafbf5;border:1px solid #a4b49b;border-radius:16px;box-shadow:0 12px 70px #17271240;display:flex;flex-direction:column;overflow:hidden}.node-links-dialog>header{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 24px;border-bottom:1px solid #dce4d3;flex-shrink:0}.node-links-dialog>header span{font-size:11px;color:#87937c;letter-spacing:1px}.node-links-dialog h2{font-size:22px;font-weight:550;margin:6px 0 0;color:#354b36}.node-links-close{width:44px;height:44px;border:1px solid #c5d3ba;background:#fff;border-radius:50%;font-size:25px;color:#65775a;flex-shrink:0}.node-links-settings{padding:18px 24px 12px;background:#f0f4e9;border-bottom:1px solid #dce4d3;flex-shrink:0}.node-links-settings>label{display:flex;align-items:center;gap:16px;font-size:13px;color:#53694a}.node-links-settings>label input{min-width:0;flex:1;background:#fff;border:1px solid #b8cbaa;border-radius:6px;padding:10px 12px;min-height:46px;font-size:15px;color:#3d5c3b}.node-links-settings>p{font-size:11px;color:#7d8b74;line-height:1.8;margin:9px 0 12px}.node-links-batch{display:flex;gap:9px;flex-wrap:wrap}.node-links-batch button{min-height:44px;padding:9px 14px;border:1px solid #b7c9a9;background:#fff;border-radius:6px;font-size:12px;color:#42603a}.node-links-batch button:first-child{background:#375f42;color:#fff;border-color:#375f42}.node-links-result{font-size:12px;line-height:1.7;color:#497143;margin:9px 0}.node-links-result:empty{display:none}.node-links-search{display:block;width:100%;background:#fafcf5;border:1px solid #ccd8c2;border-radius:6px;padding:10px 12px;min-height:44px;font-size:14px;color:#42583b;margin-top:12px}.node-links-list{overflow:auto;min-height:0;padding:0 24px 18px;overscroll-behavior:contain}.node-links-list article{display:grid;grid-template-columns:minmax(180px,.8fr) minmax(0,1.3fr);gap:20px;align-items:center;padding:17px 0;border-bottom:1px solid #e0e7d9}.node-links-list article a{font-size:13px;line-height:1.7;color:#395d3e;text-decoration:none}.node-links-list article a:hover{text-decoration:underline}.node-links-list article small{display:block;font-size:10px;color:#8a9580;margin-top:5px}.node-links-url{display:flex;align-items:center;gap:7px;min-width:0}.node-links-url input{width:100%;min-width:0;border:1px solid #d1dcc8;background:#fff;border-radius:5px;padding:9px;font-size:12px;color:#536b49;min-height:44px}.node-links-url button{min-height:44px;padding:9px 12px;flex-shrink:0;border:1px solid #c8d5bf;background:#fff;border-radius:5px;font-size:12px;color:#45643b}.node-links-empty{padding:25px;font-size:13px;color:#8b967f;text-align:center}
@media(max-width:850px){.node-link-tools{margin:0 0 12px}.node-link-actions{gap:6px}.node-link-actions>a,.node-link-actions>button{font-size:11px;padding:8px 10px}.node-page-catalog{font-size:11px;padding:7px 9px}.is-node-page .handbook-main{padding:16px 12px 30px}.node-links-overlay{padding:10px}.node-links-dialog{max-height:94dvh;border-radius:13px}.node-links-dialog>header{padding:14px 16px}.node-links-dialog h2{font-size:19px}.node-links-settings{padding:13px 16px}.node-links-list{padding:0 16px 16px}.node-links-list article{grid-template-columns:1fr;gap:10px}.node-links-settings>label{display:block;font-size:12px}.node-links-settings>label input{display:block;width:100%;margin-top:7px;font-size:16px}.node-links-search{font-size:16px}.node-links-settings>p{font-size:11px}.node-links-batch{gap:6px}.node-links-batch button{font-size:11px;padding:9px 10px}.node-links-url input{font-size:12px}.handbook-node-open{min-height:44px;width:40px;right:2px}.is-node-page .node-link-actions{width:100%}.is-node-page .node-link-actions>button{flex:1}}
@media(max-height:520px){.node-links-dialog{display:block;overflow:auto;max-height:96dvh;overscroll-behavior:contain}.node-links-dialog>header{position:sticky;top:0;z-index:2;background:#fafbf5;padding:9px 16px}.node-links-dialog>header span{font-size:10px}.node-links-dialog h2{font-size:17px;margin-top:3px}.node-links-settings{padding:12px 16px}.node-links-settings>label{display:flex;align-items:center;font-size:12px}.node-links-settings>label input{margin:0;width:auto;flex:1;min-width:0}.node-links-list{overflow:visible;min-height:0}.node-links-list article{grid-template-columns:minmax(180px,.8fr) minmax(0,1.3fr);gap:15px}.node-links-list article>div{min-width:0}}