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var(--border);padding-left:26px;display:flex;flex-direction:column;gap:10px}.item-buy .price b{font-size:28px}.item-buy .btn{width:100%}.item-buy .status-line{display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--green);font-weight:600}.item-buy .status-line.student{color:var(--blue)}.item-buy .key-form{margin-top:4px}.item-buy .inline-field .btn{width:auto}.item-buy .muted{font-size:12.5px;line-height:1.7}.item-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;margin-top:20px;align-items:start}.item-main{padding:6px 30px 30px;min-width:0}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin:0 -30px 24px;padding:0 22px;position:sticky;top:0;background:#fff;z-index:2;border-radius:var(--radius) var(--radius) 0 0}.tab{position:relative;border:0;background:none;padding:16px 12px 14px;font-size:15px;font-weight:600;color:#6a7a92;cursor:pointer}.tab[aria-selected=true]{color:var(--navy)}.tab[aria-selected=true]:after{content:"";position:absolute;left:10px;right:10px;bottom:-1px;height:3px;border-radius:3px 3px 0 0;background:var(--blue)}.preview-note{margin-bottom:20px}.item-side{position:sticky;top:16px;padding:18px 18px 12px}.item-side h2{font-size:15px;display:flex;align-items:center;justify-content:space-between;gap:8px}.item-side h2 small{font-weight:400;color:var(--muted);font-size:12.5px}.doc-list{list-style:none;margin:10px -8px 0 0;padding:0 8px 0 0;counter-reset:d;max-height:calc(100vh - 150px);overflow-y:auto}.doc-list li{counter-increment:d}.doc-list a,.doc-list span.row{display:flex;align-items:flex-start;gap:8px;padding:8px;margin:0 -8px;border-radius:8px;font-size:14px;line-height:1.55;color:#3d4e67;text-decoration:none}.doc-list a:hover{background:var(--bg);color:var(--blue)}.doc-list a:before,.doc-list span.row:before{content:counter(d,decimal-leading-zero);font-family:ui-monospace,Consolas,Menlo,monospace;font-size:11.5px;color:#9aa8bc;padding-top:2px;flex-shrink:0}.doc-list .ic{margin-left:auto;color:#b0bccd;padding-top:2px}.side-sub{margin-top:14px;padding-top:12px;border-top:1px solid #eef1f6}.side-sub h3{font-size:13.5px;color:#4b5c75}.side-sub ul{list-style:none;margin:8px 0 0;padding:0}.side-sub li a{display:block;padding:6px 0;font-size:13.5px;text-decoration:none}@media(min-width:1061px){.pcard.bundle{align-self:start}}@media(max-width:1060px){.lib-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:900px){.unlock,.item-hero{grid-template-columns:1fr;gap:18px}.item-buy{border-left:0;padding-left:0;border-top:1px solid var(--border);padding-top:18px}.item-layout{grid-template-columns:1fr}.item-side{position:static}.doc-list{max-height:none}}@media(max-width:640px){.page-head{padding:22px 0 16px}.page-head h1{font-size:24px}.unlock{padding:18px 16px}.unlock.on{grid-template-columns:1fr;gap:12px}.unlock-side{justify-content:space-between}.cd-box{align-items:flex-start}.cd-big{font-size:30px}.lib-grid{grid-template-columns:1fr;gap:12px}.pcard{padding:16px 16px 14px}.pcard.group{grid-column:auto}.group-list summary .sum-hint{display:none}.group-list ul{display:block}.group-list li{display:flex;justify-content:space-between;border:0;border-top:1px dashed #e7ecf3;border-radius:0;background:none;padding:10px 0;font-size:14px}.group-list li:first-child{border-top:0}.group-list li.on{background:none}.item-hero{padding:20px 16px;margin-top:10px}.item-hero h1{font-size:23px}.item-main{padding:4px 16px 22px}.tabs{margin:0 -16px 18px;padding:0 8px}.item-side{padding:16px}.crumbs{padding-top:14px}}