:root{--paper:#fdfaf6;--surface:#fffefb;--ink:#262626;--muted:#77736b;--line:#e5e0d7;--accent:#f2e297;--accent-deep:#756616;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{color:inherit;border:0;background:none;cursor:pointer}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #b59c32;outline-offset:3px}[hidden]{display:none!important}svg{display:block}.skip-link{position:fixed;z-index:100;left:16px;top:10px;background:var(--ink);color:white;padding:8px 14px;transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{height:76px;padding:0 40px;display:flex;align-items:center;gap:36px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 92%,transparent);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:11px;margin-right:auto}.brand-logo{display:block;width:108px;height:auto;max-height:40px;object-fit:contain}.brand-divider{width:1px;height:28px;background:var(--line);margin:0 2px}.brand strong{display:block;font-size:.94rem;line-height:1.2;letter-spacing:.04em}.brand small{display:block;color:var(--muted);font-size:.65rem;margin-top:4px;letter-spacing:.08em}.site-header nav{display:flex;gap:24px}.site-header nav button{font-size:.78rem;color:var(--muted);padding:12px 0}.site-header nav button:hover{color:var(--ink)}.continue-button{display:flex;align-items:center;gap:20px;background:var(--ink);color:white;padding:10px 16px;min-height:42px;font-size:.78rem;transition:transform .2s}.continue-button:hover{transform:translateY(-2px)}main{max-width:1540px;margin:auto;padding:0 40px}.page-intro{display:grid;grid-template-columns:1.25fr 1fr auto;gap:40px;align-items:end;padding:42px 0 34px}.eyebrow{font-family:var(--mono);font-size:.65rem;letter-spacing:.12em;color:var(--accent-deep);margin:0 0 12px}.page-intro h1{font-size:clamp(2rem,3.3vw,3.4rem);font-weight:600;line-height:1.2;letter-spacing:-.055em;margin:0}.keep-phrase{white-space:nowrap}.page-intro>p{font-size:.92rem;line-height:1.8;color:var(--muted);max-width:390px;margin:0}.intro-meta{display:flex;gap:20px;align-items:center;white-space:nowrap;font-size:.66rem;color:var(--muted)}.intro-meta span{display:flex;flex-direction:column}.intro-meta b{font-family:var(--mono);font-size:1.15rem;color:var(--ink);font-weight:400}.query-bar{display:flex;align-items:center;gap:10px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:sticky;top:76px;background:var(--paper);z-index:15}.search-box{display:flex;align-items:center;gap:12px;flex:1;min-width:0;background:var(--surface);border:1px solid var(--line);height:48px;padding:0 14px;transition:border-color .2s,box-shadow .2s;position:relative;overflow:hidden}.search-box:focus-within{border-color:#b59c32;box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 45%,transparent)}.search-box svg{width:19px;height:19px;fill:none;stroke:var(--muted);stroke-width:1.6;flex:none}.search-box input{width:100%;min-width:0;border:0;outline:0;background:none;font-size:.92rem;color:var(--ink)}.search-box input::placeholder{color:#99948a}.search-box kbd,.keyboard-note kbd{font-family:var(--mono);font-size:.66rem;border:1px solid var(--line);padding:0 6px;color:var(--muted)}.search-box.searching:after{content:"";height:2px;width:90px;background:#b59c32;position:absolute;bottom:0;left:0;animation:search-scan .4s ease-out}@keyframes search-scan{to{transform:translateX(80vw)}}.query-action{height:48px;padding:0 17px;border:1px solid var(--line);font-size:.78rem;white-space:nowrap;transition:background .2s,border-color .2s}.query-action span{display:inline-grid;place-items:center;min-width:20px;height:20px;margin-left:6px;background:var(--accent);font-family:var(--mono);font-size:.65rem}.query-action:hover,.query-action[aria-pressed=true]{background:var(--accent);border-color:#d7c563}.workspace{display:grid;grid-template-columns:190px minmax(0,1fr);gap:36px;padding-top:28px}.catalog-sidebar{border-right:1px solid var(--line);padding-right:24px;align-self:start;position:sticky;top:166px}.sidebar-label{font-family:var(--mono);font-size:.63rem;color:var(--muted);letter-spacing:.1em;margin-bottom:12px}.category-filters{display:grid;gap:2px}.filter-btn{display:flex;align-items:center;justify-content:space-between;text-align:left;width:100%;min-height:40px;padding:7px 9px;color:var(--muted);font-size:.78rem;position:relative;transition:color .2s,background .2s}.filter-btn:before{content:"";font-family:var(--mono);margin-right:7px;color:#b59c32;opacity:0}.filter-btn:hover:before,.filter-btn[aria-pressed=true]:before{content:">";opacity:1}.filter-btn span{font-family:var(--mono);font-size:.62rem}.filter-btn:hover{color:var(--ink);background:color-mix(in srgb,var(--accent) 25%,transparent)}.filter-btn[aria-pressed=true]{background:var(--accent);color:var(--ink)}.study-progress{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.study-progress>div:first-child{display:flex;justify-content:space-between;align-items:center;font-size:.75rem}.study-progress strong{font-family:var(--mono);font-weight:400;font-size:.7rem}.progress-track{height:3px;background:var(--line);margin:12px 0}.progress-track span{display:block;height:100%;width:0;background:#b59c32;transition:width .45s}.study-progress p{font-size:.68rem;color:var(--muted);margin:0 0 12px}.study-progress button{min-height:40px;width:100%;display:flex;justify-content:space-between;align-items:center;padding:7px 0;font-size:.72rem}.local-tip{font-size:.64rem;color:var(--muted);line-height:1.7;border-top:1px solid var(--line);padding-top:16px}.catalog-heading{display:flex;justify-content:space-between;align-items:center;min-height:32px;margin-bottom:12px}.catalog-heading p{margin:0;font-size:.82rem;font-weight:600}.catalog-heading>span{font-size:.68rem;color:var(--muted)}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.product-card{background:var(--surface);border:1px solid var(--line);min-height:208px;padding:18px;display:flex;flex-direction:column;position:relative;transition:transform .22s,border-color .22s,box-shadow .22s;animation:card-in .32s both;animation-delay:calc(var(--i)*20ms)}.product-card:before{content:"";position:absolute;left:-1px;top:-1px;width:38px;height:3px;background:var(--accent);transition:width .25s}.product-card:hover{transform:translateY(-3px);border-color:#c9bd83;box-shadow:0 8px 24px #3b321008}.product-card:hover:before{width:calc(100% + 2px)}@keyframes card-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.card-id{font-family:var(--mono);font-size:.63rem;letter-spacing:.08em;color:var(--accent-deep)}.card-actions{display:flex;align-items:center;gap:2px}.mini-btn{width:36px;height:36px;display:grid;place-items:center;color:var(--muted)}.mini-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5}.mini-btn.active{color:var(--accent-deep)}.mini-btn.active svg{fill:var(--accent)}.learned-dot{font-size:.62rem;color:#5b7258;display:flex;align-items:center;gap:4px}.learned-dot:before{content:"";width:5px;height:5px;border-radius:50%;background:#6f8b6c}.card-open{padding:0;text-align:left;display:flex;flex-direction:column;flex:1;width:100%}.card-category{font-size:.66rem;color:var(--muted);margin:6px 0 7px}.card-title{font-size:1.08rem;line-height:1.45;letter-spacing:-.02em;margin:0;font-weight:600}.card-summary{font-size:.78rem;line-height:1.75;color:var(--muted);margin:10px 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.64rem;color:var(--muted);border-top:1px solid var(--line);padding-top:10px}.card-arrow{font-size:1rem;color:var(--accent-deep)}.empty-state{text-align:center;padding:80px 20px;border:1px solid var(--line);background:var(--surface)}.empty-state>span{font-size:2.5rem;color:var(--accent-deep)}.empty-state h2{font-size:1.2rem}.empty-state p{font-size:.85rem;color:var(--muted)}.empty-state button{background:var(--accent);padding:10px 20px;min-height:44px}footer{max-width:1540px;margin:64px auto 0;padding:24px 40px 30px;border-top:1px solid var(--line)}.footer-main{display:flex;justify-content:space-between;align-items:center;gap:20px}footer p,footer button{font-size:.68rem;color:var(--muted)}footer button{min-height:40px}.copyright{margin:14px 0 0;padding-top:14px;border-top:1px dashed var(--line);font-size:.62rem!important;line-height:1.8}dialog{padding:0;border:0;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#26262666;backdrop-filter:blur(3px)}dialog[open]{animation:dialog-in .24s ease-out}@keyframes dialog-in{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}.card-dialog{width:min(680px,100%);max-width:none;height:100dvh;max-height:100dvh;margin:0 0 0 auto;box-shadow:-20px 0 70px #26262615}.dialog-shell{padding:30px 36px 20px;min-height:100%;display:flex;flex-direction:column}.dialog-header{display:flex;justify-content:space-between;gap:20px}.dialog-id{font-family:var(--mono);font-size:.65rem;color:var(--accent-deep);letter-spacing:.08em;margin:0 0 7px}.dialog-header h2{font-size:1.75rem;line-height:1.35;letter-spacing:-.04em;margin:0}.icon-button{width:42px;height:42px;border:1px solid var(--line);display:grid;place-items:center;font-size:1.5rem;font-weight:300;line-height:1;flex:none;transition:background .2s,transform .2s}.icon-button:hover{background:var(--accent);transform:rotate(4deg)}.dialog-status{font-size:.7rem;line-height:1.75;color:var(--muted);margin:12px 0 18px}.dialog-tools{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:20px}.dialog-tools button{min-height:40px;border:1px solid var(--line);padding:7px 12px;font-size:.7rem;color:var(--muted)}.dialog-tools button:hover,.dialog-tools button.active{background:var(--accent);border-color:#d7c563;color:var(--ink)}.detail-tabs{display:flex;border-bottom:1px solid var(--line);overflow-x:auto}.detail-tabs button{min-height:48px;padding:10px 15px;font-size:.75rem;color:var(--muted);white-space:nowrap;border-bottom:2px solid transparent}.detail-tabs button:first-child{padding-left:0}.detail-tabs button[aria-selected=true]{color:var(--ink);border-color:#a89128}.detail-content{padding:26px 0 36px;animation:content-in .2s ease-out;flex:1}.detail-content h3{font-size:1.1rem;margin:0 0 14px}.detail-content h3:not(:first-child){margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}.detail-content p{font-size:.94rem;line-height:2;margin:0}.detail-content strong{font-weight:600}.position-summary{background:color-mix(in srgb,var(--accent) 38%,var(--surface));padding:18px 20px;border-left:3px solid #b59c32;margin-bottom:30px}.position-summary>span,.content-lead>span{font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;color:var(--accent-deep)}.position-summary p{font-size:1rem;line-height:1.8;margin:6px 0 0;font-weight:500}.knowledge-section{margin-bottom:30px}.detail-content .knowledge-section h3{display:flex;align-items:center;gap:10px;font-size:1rem;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line)}.knowledge-section h3>span{font-family:var(--mono);font-size:.62rem;color:var(--accent-deep);font-weight:400}.knowledge-list{list-style:none;padding:0;margin:0}.knowledge-list>li{position:relative;padding:9px 0 9px 18px;font-size:.9rem;line-height:1.9;color:#4d4a44;border-bottom:1px dashed #ebe6dc}.knowledge-list>li:before{content:"";position:absolute;left:1px;top:21px;width:5px;height:5px;background:#c2ad47;border-radius:50%}.knowledge-list>li:last-child{border-bottom:0}.knowledge-list .script-item{padding:16px 0 0}.script-item:before{display:none}.script-item>span{font-size:.66rem;color:var(--accent-deep);font-weight:600}.script-item blockquote{margin:7px 0 0;padding:14px 16px;background:var(--surface);border:1px solid var(--line);font-size:.9rem;line-height:1.95;color:var(--ink)}.evidence-tag{display:inline-block;vertical-align:1px;font-size:.58rem;line-height:1.5;padding:0 5px;margin-right:6px;border:1px solid var(--line);font-family:var(--mono);font-weight:400}.evidence-tag.confirmed{color:#49694d;background:#edf4e9;border-color:#d2dfcc}.evidence-tag.channel{color:#756616;background:#faf5d9;border-color:#e3d89c}.evidence-tag.pending{color:#875b45;background:#f8ede7;border-color:#e7cfc1}.content-lead{margin-bottom:20px}.detail-content .content-lead h3{font-size:1.25rem;margin:4px 0 0;padding:0;border:0}.workflow-list{list-style:none;padding:0;margin:0}.workflow-list>li{display:grid;grid-template-columns:36px 1fr;gap:12px;padding:18px 0;border-top:1px solid var(--line)}.step-number{font-family:var(--mono);font-size:.66rem;color:var(--accent-deep);padding-top:4px}.detail-content .workflow-list h4{font-size:.92rem;margin:0 0 6px;color:var(--ink)}.detail-content .workflow-list p{font-size:.88rem;line-height:1.9;color:#565249;margin:0}.boundary-list{display:grid;gap:12px}.boundary-item{padding:16px 18px;background:var(--surface);border:1px solid var(--line)}.detail-content .boundary-item h4{font-size:.9rem;margin:0 0 8px}.detail-content .boundary-item p{font-size:.88rem;line-height:1.9;margin:0;color:#565249}.qa-item h4:before{content:"顾客问　";font-family:var(--mono);font-size:.58rem;color:var(--accent-deep);font-weight:400}.boundary-ban{border-left:3px solid #b7775f;background:#fcf5f0}.boundary-ban h4{color:#8c503d}.boundary-pending{border-left:3px solid #c2ad47;background:#fffcf0}.boundary-pending h4{color:#756616}@keyframes content-in{from{opacity:.3;transform:translateY(4px)}to{opacity:1;transform:none}}.dialog-pagination{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:10px;position:sticky;bottom:0;background:var(--paper)}.dialog-pagination button{min-height:42px;font-size:.72rem}.dialog-pagination span{font-family:var(--mono);font-size:.65rem;color:var(--muted)}.info-dialog{width:min(590px,calc(100% - 32px));max-height:88dvh}.info-shell{padding:40px;position:relative}.info-close{position:absolute;right:18px;top:18px}.info-shell h2{font-size:1.6rem;margin:0 0 24px;letter-spacing:-.04em}.info-shell h3{font-size:.92rem;margin:24px 0 5px}.info-shell p,.info-shell li{font-size:.82rem;color:var(--muted);line-height:1.9}.guide-list{list-style:none;padding:0;counter-reset:guide}.guide-list li{counter-increment:guide;position:relative;padding:0 0 18px 44px}.guide-list li:before{content:"0" counter(guide);font-family:var(--mono);position:absolute;left:0;color:var(--accent-deep);font-size:.75rem}.guide-list p{margin:3px 0}.keyboard-note{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0}.source-rules{padding:8px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.source-rules strong{color:var(--ink)}.local-note{font-size:.7rem!important}.toast{position:fixed;z-index:200;bottom:24px;left:50%;transform:translate(-50%,15px);opacity:0;background:var(--ink);color:white;padding:10px 18px;font-size:.75rem;pointer-events:none;transition:opacity .2s,transform .2s;max-width:calc(100% - 32px);text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:1180px){.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-intro{grid-template-columns:1.1fr 1fr}.intro-meta{display:none}.workspace{gap:26px}}@media(max-width:760px){html{scroll-padding-top:78px}.site-header{height:66px;padding:0 18px;gap:12px}.site-header nav{display:none}.brand strong{font-size:.84rem}.brand small{font-size:.58rem}.brand-logo{width:88px;max-height:34px}.brand-divider{height:24px}.continue-button{font-size:.7rem;padding:8px 11px;min-height:40px;gap:10px}main{padding:0 18px}.page-intro{display:block;padding:30px 0 24px}.page-intro h1{font-size:2.25rem}.page-intro>p{font-size:.85rem;margin-top:14px;max-width:330px}.eyebrow{font-size:.58rem}.query-bar{top:66px;padding:10px 0;gap:7px}.search-box{height:46px;padding:0 11px}.search-box kbd{display:none}.search-box input{font-size:.82rem}.query-action{height:46px;padding:0 11px;font-size:.7rem}.query-action span{display:none}.workspace{display:block;padding-top:18px}.catalog-sidebar{position:static;border:0;padding:0}.sidebar-label{display:none}.category-filters{display:flex;gap:6px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}.category-filters::-webkit-scrollbar{display:none}.filter-btn{width:auto;flex:none;min-height:40px;padding:7px 12px;border:1px solid var(--line);background:var(--surface);font-size:.7rem;gap:10px}.filter-btn:before{display:none}.filter-btn[aria-pressed=true]{border-color:#d7c563}.study-progress,.local-tip{display:none}.catalog-heading{margin:4px 0 10px}.catalog-heading>span{display:none}.product-grid{grid-template-columns:1fr;gap:9px}.product-card{min-height:0;padding:16px}.card-title{font-size:1.06rem}.card-summary{font-size:.85rem;-webkit-line-clamp:2;margin:8px 0 12px}.card-category{margin-top:2px}.card-footer{padding-top:8px}.mini-btn{width:42px;height:42px}.dialog-shell{padding:22px 20px 16px}.dialog-header h2{font-size:1.45rem}.dialog-status{font-size:.68rem}.dialog-tools{margin-bottom:16px}.dialog-tools button{min-height:42px}.detail-tabs button{padding:10px 13px}.detail-content p{font-size:1rem;line-height:1.95}.info-shell{padding:36px 24px}.info-shell h2{font-size:1.4rem;padding-right:30px}footer{margin-top:40px;padding:20px 18px;display:block}.footer-main{display:block}footer button{padding:0;text-align:left}.card-dialog{width:100%}}@media(max-width:370px){.page-intro h1{font-size:2rem}.continue-button span{display:none}.query-action{padding:0 8px}.dialog-tools button{padding:7px 9px}}/* Price-book index tabs */
.category-filters{gap:0}
.filter-btn{min-height:52px;padding:9px 10px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:25px 1fr auto;gap:5px;background:transparent}
.filter-btn:before{display:none}
.filter-btn small{font-family:var(--mono);font-size:.58rem;color:#a49b84;align-self:center}
.filter-btn b{font-size:.76rem;font-weight:500;white-space:nowrap}
.filter-btn span{align-self:center}
.filter-btn[aria-pressed=true]{background:var(--accent);box-shadow:inset 3px 0 #a89128}
.filter-btn[aria-pressed=true] small{color:var(--accent-deep)}
.dialog-header{align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line)}
.back-catalog{min-height:44px;display:flex;align-items:center;gap:9px;padding:0;font-size:.78rem;color:var(--muted)}
.back-catalog:hover{color:var(--ink)}
.back-catalog span{font-size:1.15rem;color:var(--accent-deep)}
.dialog-title-row{padding-top:22px}

@media(max-width:760px){
  .site-header{height:58px;padding:0 14px}
  .brand-logo{width:96px;max-height:32px}
  .brand-divider,.brand>span:last-child{display:none}
  .continue-button{min-height:40px;padding:7px 12px}
  main{padding:0 14px}
  .page-intro{display:none}
  .query-bar{top:58px;padding:10px 0}
  .search-box{height:46px}
  .workspace{padding-top:0}
  .catalog-sidebar{margin:0 -14px;padding:0 14px;background:var(--surface);border-bottom:1px solid var(--line)}
  .category-filters{gap:0;padding:0;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x proximity}
  .filter-btn{position:relative;flex:none;width:auto;min-width:108px;min-height:58px;padding:8px 12px 9px;display:grid;grid-template-columns:1fr auto;grid-template-rows:15px 22px;gap:1px 8px;text-align:left;border:0;border-right:1px solid var(--line);border-radius:0;scroll-snap-align:start;background:var(--surface)}
  .filter-btn small{grid-column:1/3;font-size:.55rem;line-height:15px}
  .filter-btn b{font-size:.72rem;line-height:22px}
  .filter-btn span{font-size:.58rem;line-height:22px}
  .filter-btn[aria-pressed=true]{box-shadow:inset 0 -4px #a89128;background:var(--accent)}
  .catalog-heading{min-height:44px;margin:0}
  .catalog-heading p{font-size:.76rem}
  .product-grid{gap:8px}
  .product-card{padding:12px 14px;min-height:0}
  .product-card:before{width:28px;height:2px}
  .card-top{min-height:34px}
  .card-category{margin:0 0 4px;font-size:.62rem}
  .card-title{font-size:1.04rem}
  .card-summary{font-size:.8rem;line-height:1.65;margin:6px 0 9px}
  .card-footer{font-size:.6rem;padding-top:7px}
  .mini-btn{width:40px;height:40px}
  .dialog-shell{padding:12px 16px 10px}
  .dialog-header{padding-bottom:8px;position:sticky;top:-12px;background:var(--paper);z-index:2}
  .dialog-header .icon-button{width:40px;height:40px}
  .back-catalog{font-size:.78rem}
  .dialog-title-row{padding-top:16px}
  .dialog-header h2,.dialog-title-row h2{font-size:1.42rem}
  .dialog-status{font-size:.66rem;line-height:1.65;margin:8px 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .dialog-tools{display:grid;grid-template-columns:1fr 1.35fr 1fr;gap:6px;margin-bottom:12px}
  .dialog-tools button{min-height:42px;padding:6px 8px;font-size:.66rem}
  .detail-tabs button{min-height:46px;padding:9px 12px;font-size:.72rem}
  .detail-content{padding-top:20px}
  .dialog-pagination button{min-height:44px}
}

@media(max-width:370px){
  .filter-btn{min-width:102px}
  .dialog-shell{padding-left:14px;padding-right:14px}
}

/* Notebook workspace and optical home */
.app-shell{max-width:1600px;margin:0 auto;display:grid;grid-template-columns:210px minmax(0,1fr);gap:0;padding:0 36px 0 0;min-height:calc(100vh - 76px)}
.catalog-sidebar{position:sticky;top:76px;height:calc(100vh - 76px);align-self:start;border:0;border-right:1px solid var(--line);padding:26px 0 24px 22px;background:#f7f2e9;z-index:12;display:flex;flex-direction:column}
.notebook-home{height:62px;display:flex;align-items:center;gap:12px;text-align:left;padding:0 20px 0 0;margin-bottom:22px;border-bottom:1px solid var(--line)}
.notebook-home>span{width:34px;height:34px;display:grid;place-items:center;border:1px solid #c9c0ab;border-radius:50%;font-family:var(--mono);font-size:.64rem}
.notebook-home b{font-size:.8rem;font-weight:600;letter-spacing:.12em}
.category-filters{display:flex;flex-direction:column;gap:7px;overflow:visible;padding:0}
.filter-btn{width:calc(100% + 1px);min-height:54px;display:grid;grid-template-columns:24px 1fr auto;grid-template-rows:1fr;align-items:center;gap:6px;padding:8px 14px 8px 12px;text-align:left;border:1px solid #ded5c4;border-right:0;border-radius:7px 0 0 7px;background:#eee7d9;box-shadow:-3px 3px 0 #e4dac8;transform:translateX(0);transition:transform .25s cubic-bezier(.77,0,.175,1),background .25s}
.filter-btn:nth-child(2n){background:#f2ebdc;transform:translateX(-5px)}
.filter-btn:nth-child(3n){background:#e9e4d9}
.filter-btn small{font-size:.58rem;color:#8b806c}
.filter-btn b{font-size:.73rem;font-weight:500;white-space:nowrap}
.filter-btn span{font-size:.6rem;color:#7f7461}
.filter-btn:hover{transform:translateX(5px);background:#f6edc9}
.filter-btn[aria-pressed=true]{background:var(--accent);box-shadow:-5px 4px 0 #d8ca8a;transform:translateX(6px);border-color:#d5c778}
.study-progress{margin:auto 20px 0 0;padding-top:16px}
.study-progress button{font-size:.68rem}
.main-panel{min-width:0;padding:0 0 0 36px;overflow:hidden}
.query-bar{top:76px;padding:16px 0;border-top:0;z-index:10}
.search-box{height:50px}
.home-view{display:grid;grid-template-columns:minmax(360px,1fr) minmax(300px,.85fr);column-gap:30px;padding-top:38px;animation:home-enter .55s cubic-bezier(.2,.7,.2,1)}
@keyframes home-enter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.hero-copy{position:relative;z-index:2;padding:24px 0 28px}
.eyebrow{margin-bottom:18px}
.hero-copy h1{font-size:clamp(2.8rem,4.6vw,5rem);font-weight:500;line-height:1.14;letter-spacing:-.065em;margin:0}
.hero-copy h1 span{color:#8b7b32}
.hero-description{font-size:.88rem;color:var(--muted);line-height:1.9;margin:24px 0}
.hero-all{display:flex;align-items:center;justify-content:space-between;gap:40px;background:var(--ink);color:#fff;padding:13px 17px;min-height:48px;font-size:.76rem;transition:transform .2s,background .2s}
.hero-all:hover{transform:translateY(-2px);background:#4d4634}
.hero-meta{display:flex;gap:30px;margin-top:28px;font-family:var(--mono);font-size:.54rem;letter-spacing:.08em;color:var(--muted)}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta b{font-size:1rem;color:var(--ink);font-weight:400}
.optical-stage{position:relative;min-height:350px;display:grid;place-items:center;isolation:isolate;overflow:hidden}
.optical-stage:before{content:"";position:absolute;width:85%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,#f4eaa34d,transparent 67%);filter:blur(4px)}
.lens-disc{position:relative;width:min(245px,22vw);aspect-ratio:1;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid #b8ac78;background:radial-gradient(circle at 32% 25%,#fffef2dd 0 8%,#e9e4c388 28%,#d4ddda55 55%,#f5efdc99 76%);box-shadow:inset -18px -20px 45px #8b927224,inset 12px 10px 24px #fff,0 25px 55px #655b2315;backdrop-filter:blur(4px);animation:lens-float 6s ease-in-out infinite;z-index:2}
.lens-disc:after{content:"";position:absolute;inset:13px;border:1px solid #ffffffaa;border-radius:50%}
.lens-disc span{font-size:1.25rem;letter-spacing:.26em;margin-left:.26em;font-weight:500;color:#68633f}
.lens-disc small{font-family:var(--mono);font-size:.48rem;letter-spacing:.14em;color:#8e8769;margin-top:7px}
.lens-glint{position:absolute;width:40%;height:140%;left:5%;top:-20%;background:linear-gradient(90deg,transparent,#ffffff88,transparent);transform:rotate(28deg);animation:glint 5s ease-in-out infinite}
.orbit{position:absolute;border:1px solid #c9bd8766;border-radius:50%;width:330px;height:170px;transform:rotate(-25deg);animation:orbit-turn 16s linear infinite}
.orbit-two{width:290px;height:290px;transform:rotate(55deg);border-style:dashed;animation-duration:23s;animation-direction:reverse}
.stage-code{position:absolute;font-family:var(--mono);font-size:.58rem;letter-spacing:.12em;color:#9a8c59;animation:code-pulse 4s ease-in-out infinite}
.code-a{left:4%;top:22%}.code-b{right:2%;top:36%;animation-delay:1s}.code-c{left:15%;bottom:15%;animation-delay:2s}
@keyframes lens-float{50%{transform:translateY(-9px) rotate(2deg)}}
@keyframes glint{0%,20%{transform:translateX(-90%) rotate(28deg)}70%,100%{transform:translateX(250%) rotate(28deg)}}
@keyframes orbit-turn{to{transform:rotate(335deg)}}
@keyframes code-pulse{50%{opacity:.35}}
.home-categories{grid-column:1/-1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);margin-top:8px}
.home-category{min-height:82px;display:grid;grid-template-columns:36px 1fr auto;align-items:center;gap:12px;text-align:left;padding:15px 20px 15px 0;border-bottom:1px solid var(--line);transition:background .2s,padding .25s;animation:chapter-in .45s both;animation-delay:calc(var(--i)*55ms)}
.home-category:nth-child(odd){border-right:1px solid var(--line)}
.home-category:nth-child(even){padding-left:22px}
.home-category:hover{background:#f5efda;padding-left:12px}
.chapter-no{font-family:var(--mono);font-size:.62rem;color:#a2914f}
.home-category b{display:block;font-size:.9rem;font-weight:600}
.home-category small{display:block;color:var(--muted);font-size:.66rem;margin-top:4px}
.chapter-count{font-family:var(--mono);font-size:.58rem;color:var(--muted);white-space:nowrap}
.chapter-count i{font-style:normal;color:var(--accent-deep);margin-left:8px;font-size:.85rem}
@keyframes chapter-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.catalog-content{padding-top:22px;animation:home-enter .35s ease-out}
.catalog-heading{display:grid;grid-template-columns:90px 1fr auto;gap:16px;margin-bottom:16px}
.catalog-heading>button{text-align:left;font-size:.7rem;color:var(--muted);min-height:40px}
.catalog-heading>.catalog-favorite{text-align:right;padding:0 10px;border:1px solid var(--line);min-width:64px}
.catalog-heading>.catalog-favorite[aria-pressed=true]{background:var(--accent);color:var(--ink);border-color:#d7c563}
.catalog-anchor{position:relative;top:-90px}
.catalog-heading>p{font-size:.86rem}
.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
footer{max-width:1600px}

@media(max-width:1180px){
  .app-shell{grid-template-columns:190px minmax(0,1fr)}
  .main-panel{padding-left:26px}
  .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .home-view{grid-template-columns:1.1fr .9fr}
  .lens-disc{width:200px}
}

@media(max-width:760px){
  .site-header{height:58px;padding:0 14px}
  .app-shell{display:grid;grid-template-columns:94px minmax(0,1fr);padding:0;min-height:calc(100vh - 58px)}
  .catalog-sidebar{top:58px;height:calc(100dvh - 58px);padding:14px 0 14px 7px;overflow:visible}
  .notebook-home{height:48px;margin-bottom:14px;padding:0;gap:6px}
  .notebook-home>span{width:25px;height:25px;font-size:.5rem}
  .notebook-home b{font-size:.62rem;letter-spacing:0}
  .category-filters{gap:8px}
  .filter-btn{min-height:55px;width:94px;padding:6px 7px;display:grid;grid-template-columns:16px 1fr;grid-template-rows:16px 20px;gap:0 2px;border-radius:6px 0 0 6px;box-shadow:-2px 2px 0 #e4dac8}
  .filter-btn small{grid-column:1;grid-row:1;font-size:.48rem}
  .filter-btn b{grid-column:1/3;grid-row:2;font-size:.62rem;line-height:20px;white-space:normal}
  .filter-btn span{grid-column:2;grid-row:1;font-size:.5rem;text-align:right}
  .filter-btn:hover,.filter-btn[aria-pressed=true]{transform:translateX(3px)}
  .study-progress{display:block;margin:auto 6px 0 0;border-top:1px solid var(--line);padding-top:9px}
  .study-progress>div:first-child{display:block;font-size:.54rem}
  .study-progress strong{display:block;font-size:.62rem;margin-top:3px}
  .study-progress p,.study-progress button{display:none}
  .main-panel{padding:0 12px 0 14px}
  .query-bar{top:58px;padding:10px 0;gap:6px}
  .search-box{height:44px;padding:0 10px}
  .search-box input{font-size:.72rem}
  .query-action{height:44px;padding:0 9px;font-size:.65rem}
  .home-view{display:grid;grid-template-columns:1fr;padding-top:10px;position:relative}
  .hero-copy{padding:20px 0 12px;min-height:330px}
  .eyebrow{font-size:.5rem;margin-bottom:15px;max-width:180px;line-height:1.6}
  .hero-copy h1{font-size:clamp(2rem,9.5vw,2.65rem);line-height:1.18;letter-spacing:-.055em;position:relative;z-index:2}
  .hero-description{font-size:.7rem;line-height:1.8;margin:18px 0;max-width:200px;position:relative;z-index:2}
  .hero-description br{display:none}
  .hero-all{font-size:.66rem;min-height:44px;padding:10px 13px;gap:20px;position:relative;z-index:2}
  .hero-meta{gap:14px;margin-top:20px;font-size:.43rem}
  .hero-meta b{font-size:.78rem}
  .optical-stage{position:absolute;right:-66px;top:30px;width:230px;min-height:240px;opacity:.75;z-index:0;pointer-events:none}
  .lens-disc{width:145px}
  .lens-disc span{font-size:.9rem}.lens-disc small{font-size:.36rem}
  .orbit{width:205px;height:105px}.orbit-two{width:180px;height:180px}
  .stage-code{font-size:.42rem}.code-a{left:0}.code-b{right:15px}.code-c{display:none}
  .home-categories{grid-template-columns:1fr;margin-top:0}
  .home-category{min-height:70px;padding:11px 0;grid-template-columns:25px 1fr auto;gap:7px}
  .home-category:nth-child(odd){border-right:0}
  .home-category:nth-child(even){padding-left:0}
  .home-category b{font-size:.8rem}.home-category small{font-size:.57rem}.chapter-count{font-size:.5rem}
  .catalog-content{padding-top:8px}
  .catalog-heading{grid-template-columns:45px 1fr auto;gap:5px;min-height:44px;margin-bottom:8px}
  .catalog-heading>span{display:none}
  .catalog-heading p{font-size:.7rem;text-align:right}
  .product-grid{grid-template-columns:1fr;gap:8px}
  .product-card{padding:12px;min-height:0}
  .card-summary{font-size:.76rem;line-height:1.65}
  .card-title{font-size:.98rem}
  .card-category{font-size:.58rem}
  .card-footer{font-size:.55rem}
  .dialog-shell{padding:12px 16px 10px}
  footer{padding-left:110px}
}

@media(max-width:370px){
  .app-shell{grid-template-columns:86px minmax(0,1fr)}
  .filter-btn{width:86px}
  .main-panel{padding-left:11px;padding-right:10px}
  .hero-copy h1{font-size:2rem}
  .hero-description{max-width:180px}
  .query-action{padding:0 7px}
  footer{padding-left:96px}
}

.short-name,.nav-toggle,.nav-scrim{display:none}
@media(max-width:760px){
  .app-shell{display:block;min-height:calc(100vh - 58px);padding:0}
  .main-panel{padding:0 16px;overflow:hidden}
  .catalog-sidebar{position:fixed;left:0;top:58px;bottom:0;z-index:45;width:142px;height:auto;padding:14px 10px 18px 12px;background:#f7f2e9;border-right:1px solid #d8cfbd;box-shadow:12px 0 35px #26262620;transform:translateX(-105%);transition:transform .28s cubic-bezier(.2,.75,.25,1);overflow-y:auto;visibility:hidden}
  body.nav-open{overflow:hidden}
  body.nav-open .catalog-sidebar{transform:none!important;visibility:visible}
  .notebook-home{height:48px;margin-bottom:14px}
  .notebook-home b{font-size:.72rem}
  .filter-btn{width:100%;min-height:52px;grid-template-columns:18px 1fr auto;grid-template-rows:1fr;padding:7px 10px;transform:none!important;box-shadow:-2px 2px 0 #e4dac8}
  .filter-btn small{grid-column:1;grid-row:1;font-size:.52rem}
  .filter-btn b{grid-column:2;grid-row:1;font-size:.72rem;line-height:1.3}
  .filter-btn span{grid-column:3;grid-row:1;font-size:.54rem}
  .filter-btn .full-name{display:none}
  .filter-btn .short-name{display:inline}
  .filter-btn[aria-pressed=true]{transform:translateX(3px)!important}
  .study-progress{display:none}
  .nav-toggle{display:flex;position:fixed;z-index:35;left:0;top:44%;width:38px;min-height:64px;padding:7px 5px;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:var(--accent);border:1px solid #cbbb68;border-left:0;border-radius:0 9px 9px 0;box-shadow:4px 4px 14px #4d45161a;transition:opacity .2s,transform .2s}
  .nav-toggle span{font-size:.85rem;line-height:1}
  .nav-toggle b{font-size:.6rem;font-weight:600;letter-spacing:.08em;writing-mode:vertical-rl}
  body.nav-open .nav-toggle{opacity:0;pointer-events:none;transform:translateX(-100%)}
  .nav-scrim{position:fixed;inset:58px 0 0;z-index:40;background:#26262638;backdrop-filter:blur(2px)}
  body.nav-open .nav-scrim{display:block}
  .query-bar{top:58px}
  .home-view{padding-top:8px}
  .hero-copy{min-height:345px;padding-top:26px}
  .hero-copy h1{font-size:clamp(2.25rem,10.5vw,2.8rem)}
  .hero-description{max-width:245px;font-size:.76rem}
  .hero-all{margin-left:0}
  .optical-stage{right:-56px;top:38px;opacity:.65}
  .home-category{padding-right:4px}
  .catalog-content{padding-top:12px}
  .product-card{padding:14px 15px}
  .card-title{font-size:1.05rem}
  .card-summary{font-size:.8rem}
  footer{padding-left:16px;padding-right:16px}
}
@media(max-width:370px){
  .main-panel{padding-left:14px;padding-right:14px}
  .hero-copy h1{font-size:2.15rem}
  .hero-description{max-width:220px}
  footer{padding-left:14px}
}
.browser-dialog{width:min(420px,calc(100% - 32px));border:1px solid var(--line);background:var(--surface)}
.browser-guide{position:relative;padding:34px 28px 26px}
.browser-guide h2{font-size:1.45rem;margin:0 0 14px;letter-spacing:-.03em}
.browser-guide>p:not(.eyebrow){font-size:.86rem;line-height:1.85;color:var(--muted);margin:0 0 22px}
.browser-arrow{position:absolute;right:22px;top:16px;font-size:2.2rem;color:var(--accent-deep);animation:browser-point 1.8s ease-in-out infinite}
.browser-actions{display:grid;gap:8px}
.browser-actions button{min-height:46px;padding:10px 14px;font-size:.76rem;border:1px solid var(--line)}
.browser-actions button:first-child{background:var(--ink);color:#fff;border-color:var(--ink)}
.browser-guide small{display:block;margin-top:16px;font-size:.64rem;line-height:1.7;color:var(--muted)}
@keyframes browser-point{50%{transform:translate(4px,-4px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.product-card:hover,.continue-button:hover{transform:none}}