/* 第三版工作台：共用导航框架，应用目录与聊天各自保持清晰的任务结构。 */
.workspace-header{position:relative;z-index:40}
.workspace-page-title{padding-left:24px;border-left:1px solid var(--line);color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap}
.app-page .side-head{height:60px;min-height:60px;padding:0 12px 0 24px;gap:8px;justify-content:space-between;border:0}
.side-heading{font-size:13px;font-weight:600;color:var(--text-2)}
#side-collapse{display:flex;flex:none;color:var(--text-2);border-color:transparent;background:transparent}
#side-collapse:hover{background:var(--surface-2);color:var(--accent-ink)}
.app-page .side-nav{padding:14px 12px;gap:3px}
.app-page .side-nav a{font-weight:500;gap:12px;padding:11px 12px;min-height:44px;border-radius:10px}
.side-nav-divider{height:1px;flex:none;background:var(--line);margin:12px 8px}
.app-page .side-account{position:relative;margin:0;padding:8px 12px;border:0;border-top:1px solid var(--line);border-radius:0;background:var(--surface)}
.account-toggle{display:flex;align-items:center;gap:10px;width:100%;min-height:52px;padding:6px;border:0;border-radius:10px;background:transparent;text-align:left;color:var(--text)}
.account-toggle:hover{background:var(--surface-2)}
.account-avatar{display:grid;place-items:center;width:34px;height:34px;flex:none;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink)}
.account-avatar svg{width:19px;height:19px}
.account-caption{display:flex;flex:1;flex-direction:column;min-width:0;gap:2px}
.account-name{font-size:13px;font-weight:600}
.account-caption .small{font-size:11px}
.account-chevron{width:16px;height:16px;flex:none;color:var(--text-2)}
.account-popover{position:absolute;z-index:40;bottom:calc(100% + 8px);left:12px;display:flex;flex-direction:column;gap:3px;width:240px;max-width:calc(100vw - 24px);padding:10px;background:var(--surface);border-radius:14px;box-shadow:0 12px 36px -12px rgb(14 23 41 / 30%)}
.account-popover>a,.account-popover>button{display:flex;align-items:center;min-height:44px;padding:10px 12px;border:0;border-radius:8px;background:transparent;text-align:left;color:var(--text);font-size:14px}
.account-popover>a:hover,.account-popover>button:hover{background:var(--surface-2)}
.account-popover .quota-chip{font-size:12px;white-space:normal;color:var(--text-2);border-bottom:1px solid var(--line);border-radius:0;margin-bottom:4px;max-width:none}
.account-popover #logout{color:var(--error)}
.app-page .main-inner{padding:28px 40px 20px}
.app-page #workspace-content[hidden]{display:none}
.app-page #workspace-recovery{width:min(640px,calc(100% - 48px));margin:24px auto;flex-shrink:0}
.app-page #view-chat{min-height:480px}
.app-page .chat-heading{align-items:center;margin-bottom:12px;gap:12px}
.chat-teacher{display:flex;align-items:center;gap:12px;min-width:0}
.chat-teacher>div{min-width:0}
.chat-avatar{display:grid;place-items:center;width:44px;height:44px;flex:none;border-radius:50%;overflow:hidden;background:var(--accent-soft);color:var(--accent-ink)}
.chat-avatar img{width:100%;height:100%;object-fit:cover}
.chat-avatar svg{width:24px;height:24px}
.app-page .chat-heading h1{font-size:16px;line-height:1.4}
.app-page .chat-heading p{font-size:12px;line-height:1.5;max-width:none}
.chat-heading-actions{position:relative;display:flex;align-items:center;gap:10px;flex:none}
.app-page #new-session{min-height:40px;padding:8px 13px;font-size:12px;border-radius:10px}
#new-session svg{width:16px;height:16px}
.history-menu{display:flex;align-items:center}
.app-page .history-popover{z-index:40;left:auto;right:0;top:52px;width:320px;max-width:calc(100vw - 32px);max-height:min(480px,calc(100dvh - 200px));text-align:left}
.app-page .history-toggle{width:40px;height:40px}
.app-page .chat-pane{border:0;background:transparent;border-radius:0}
.app-page .message-list{padding:28px max(4px,calc((100% - 1060px)/2));gap:24px}
.app-page .chat-welcome{width:min(100%,900px);padding:30px 8px 54px}
.app-page .chat-welcome h2{font-size:clamp(26px,3vw,36px);letter-spacing:-.02em;line-height:1.3}
.app-page .chat-welcome>p{font-size:14px;max-width:42em;margin-top:16px}
.app-page .prompt-starters{max-width:820px;margin-top:38px;gap:14px}
.app-page .prompt-starters .button{position:relative;display:flex;align-items:flex-start;flex-direction:column;gap:10px;padding:20px;min-height:142px;font-weight:400;background:var(--surface);border-color:var(--line);border-radius:16px;text-align:left}
.prompt-starters .prompt-icon{display:grid;place-items:center;width:30px;height:30px;color:var(--accent-ink)}
.prompt-starters svg{width:25px;height:25px}
.prompt-starters strong{font-size:15px;color:var(--text);font-weight:600}
.prompt-starters .prompt-description{font-size:12px;color:var(--text-2);line-height:1.6}
.app-page .prompt-starters .button:hover{border-color:var(--accent);box-shadow:0 8px 22px -18px rgb(79 70 229 / 32%)}
.app-page .message-body{background:var(--surface)}
.app-page .message-user>.message-body{background:var(--accent-soft)}
.app-page .composer-area{width:100%;max-width:1100px;margin:0}
.app-page .composer{border-color:var(--line-2);border-radius:22px;padding:18px 20px 12px;background:var(--surface)}
.app-page .composer:focus-within{border-color:var(--accent)}
.app-page .composer textarea{min-height:60px;max-height:190px;font-size:15px;line-height:1.65}
.app-page .composer-bottom{position:relative;gap:8px;flex-wrap:wrap}
.app-page .chat-image-add{background:transparent;padding:8px;color:var(--text-2)}
.chat-membership-menu{display:flex;min-width:0;margin-left:auto}
.app-page .composer-resource{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;max-width:100%;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);color:var(--text-2);font-size:12px;font-weight:600}
.composer-resource:hover,.composer-resource[aria-expanded="true"]{background:var(--accent-soft);color:var(--accent-ink)}
.composer-resource svg{width:17px;height:17px;flex:none}
#chat-membership-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.composer-resource .chat-membership-chevron{width:14px;height:14px}
.composer-resource[aria-expanded="true"] .chat-membership-chevron{transform:rotate(180deg)}
.chat-membership-popover{position:absolute;z-index:35;right:0;bottom:calc(100% + 10px);width:380px;max-width:100%;max-height:min(480px,calc(100dvh - 180px));overflow:auto;overscroll-behavior:contain;padding:18px;background:var(--surface);border-radius:16px;box-shadow:0 14px 42px -14px rgb(14 23 41 / 36%);text-align:left}
.chat-membership-head{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin-bottom:12px;color:var(--text-2)}
.chat-membership-head h2{font-size:14px;font-weight:600}
.chat-membership-head>span{font-size:12px}
.chat-membership-row{display:flex;align-items:center;gap:9px;width:100%;min-width:0;min-height:48px;padding:10px;border:0;border-radius:10px;background:transparent;text-align:left;color:var(--text-2);font-size:13px;line-height:1.5}
.chat-membership-row:not(:disabled):hover{background:var(--surface-2);color:var(--accent-ink)}
.chat-membership-row:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.chat-membership-row:disabled{cursor:default;opacity:1}
.chat-membership-row.is-current{background:var(--accent-soft);color:var(--text)}
.chat-membership-row svg{display:block;width:18px;height:18px;flex:none}
.chat-membership-name{flex:1;min-width:0;overflow-wrap:anywhere;font-weight:600}
.chat-membership-state{display:flex;align-items:center;gap:4px;flex:0 1 auto;max-width:40%;font-size:12px;overflow-wrap:anywhere}
.chat-membership-row.is-current .chat-membership-state{color:var(--accent-ink)}
.chat-membership-guide{color:var(--text-2);font-size:12px;line-height:1.7;overflow-wrap:anywhere}
.chat-membership-guide{margin:14px 0 12px;padding-top:14px;border-top:1px solid var(--line)}
.chat-membership-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.chat-membership-footer>.text-link{font-size:12px;min-height:44px}
.chat-membership-footer>.button{min-height:44px;padding:9px 14px;border-radius:999px;font-size:13px}
.app-page .composer-bottom #chat-send{width:40px;height:40px;min-height:40px;padding:0;flex:none;border-radius:50%;background:var(--text);color:var(--surface)}
.app-page .composer-bottom #chat-send:disabled{background:var(--surface-2);color:var(--text-2);opacity:.65}
.app-page .composer-meta{padding-inline:8px}
.app-page .composer-caption{right:8px}
.app-page .chat-latest{right:0}
.workspace-back{margin-bottom:12px}
.application-catalog .section-head h1{font-size:24px}
.application-catalog .section-head{margin-bottom:32px}
.application-tools{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.application-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.application-filters button{min-height:44px;padding:8px 16px;border:1px solid transparent;border-radius:999px;background:transparent;color:var(--text-2);font-size:13px}
.application-filters button[aria-pressed="true"]{background:var(--surface);border-color:var(--line);color:var(--accent-ink)}
.application-filters button:hover{background:var(--surface)}
.application-search{display:flex;align-items:center;gap:8px;width:min(320px,100%);padding-left:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px}
.application-search svg{width:18px;height:18px;flex:none;color:var(--text-2)}
.application-search input{border:0;background:transparent;min-width:0;padding-left:0;font-size:13px}
.application-search:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.application-search input:focus{outline:0;box-shadow:none}
.application-grid{display:grid;grid-template-columns:repeat(4,minmax(0,280px));gap:16px;align-items:stretch}
.application-card{position:relative;display:flex;flex-direction:column;min-width:0;padding:10px 10px 12px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:inset 0 1px 0 var(--surface-2);transition:transform .2s cubic-bezier(.16,1,.3,1),border-color .2s,box-shadow .2s}
.application-card::before{content:"";position:absolute;inset:-1px;padding:1px;border-radius:inherit;background:linear-gradient(135deg,#4f46e5,#7c3aed,#06b6d4);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;pointer-events:none;transition:opacity .2s}
.application-card:hover,.application-card:focus-within{transform:translateY(-2px);border-color:var(--line-2);box-shadow:inset 0 1px 0 var(--surface-2),0 10px 26px -14px rgb(14 23 41 / 22%)}
.application-card:hover::before,.application-card:focus-within::before{opacity:1}
.application-cover{position:relative;display:block;flex:none;aspect-ratio:4 / 3;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:linear-gradient(140deg,#eaf1fb,#c2d8f5);color:#283d61}
.application-cover-learn{background:linear-gradient(140deg,#f1eafa,#d3c6ee);color:#4e356d}
.application-cover-body{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;padding:16px 14px;text-align:center}
.application-cover h2{font-size:17px;font-weight:800;line-height:1.3;letter-spacing:-.01em;overflow-wrap:anywhere}
.application-cover p{font-size:11.5px;line-height:1.5;color:#455a78}
.application-cover-learn p{color:#604c75}
.application-art{position:absolute;inset:0;width:100%;height:100%;fill:rgb(255 255 255 / 52%);stroke:#4338ca;stroke-opacity:.26;stroke-width:1}
.application-category{position:absolute;left:8px;bottom:8px;max-width:calc(100% - 16px);padding:3px 9px;border:1px solid rgb(255 255 255 / 90%);border-radius:999px;background:rgb(255 255 255 / 82%);color:#4b4563;font-size:11px;font-weight:600;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.application-card h3{margin:11px 4px 0;font-size:14px;font-weight:700;line-height:1.45;overflow-wrap:anywhere}
.application-description{margin:6px 4px 10px;font-size:12px;line-height:1.65;color:var(--text-2);overflow-wrap:anywhere}
.application-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;margin: auto 4px 0;padding-top:10px;border-top:1px solid var(--line);color:var(--text-2);font-size:12px}
.application-author{display:inline-flex;align-items:center;gap:6px;min-width:0}
.application-avatar{display:grid;place-items:center;width:20px;height:20px;flex:none;border:1px solid var(--line);border-radius:50%;background:var(--accent-soft);color:var(--accent-ink)}
.application-avatar svg{width:12px;height:12px}
.application-footer .text-link{min-height:44px;padding:4px 8px;border-radius:999px;font-size:12px;gap:6px;white-space:nowrap}
.application-footer .text-link:hover{background:var(--surface-2)}
.catalog-empty{padding:64px 20px;text-align:center}
.catalog-empty p{margin:12px 0 20px}
.learning-page,.workspace-lecturer{max-width:1100px;width:100%}
.learning-page>.text-link{margin-bottom:16px}
.learning-path>h2{font-size:18px}
.learning-path>p:not(.form-error){margin-top:6px;max-width:75ch;font-size:14px;color:var(--text-2);line-height:1.75}
.learning-pack+.learning-pack{margin-top:32px}
.learning-pack h2{overflow-wrap:anywhere}
.list-pagination{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:16px}
.list-pagination p{margin:0;margin-right:auto}
.learning-next{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:28px;padding:12px 4px}
.learning-next h2{font-size:18px}.learning-next p{margin-top:10px;color:var(--text-2);font-size:14px;line-height:1.7}
.learning-next .button{flex:none}
.lecturer-intro{display:flex;align-items:center;gap:24px}
.lecturer-intro img{border-radius:50%;width:120px;height:120px;object-fit:cover;flex:none}
.lecturer-intro h1{font-size:28px}.lecturer-intro p{margin-top:8px;font-size:14px;line-height:1.7}
.lecturer-services{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:20px 0 32px}
.lecturer-services article{border-top:1px solid var(--line-2);padding-top:18px}.lecturer-services h3{font-size:17px}.lecturer-services p{margin-top:10px;color:var(--text-2);line-height:1.8;font-size:14px}
/* 第四版延续原型的工作面，目录、正文、产物和报价按任务顺序展开。 */
.search-toggle{display:flex;align-items:center;gap:6px;white-space:nowrap;font-size:12px;color:var(--text-2);margin:0}
.search-toggle input{width:16px;height:16px;accent-color:var(--accent)}
.script-workspace{align-items:start;grid-template-columns:minmax(320px,0.95fr) minmax(0,1.2fr)}
.script-workspace .inline-actions{flex-wrap:wrap}
.script-workspace .inline-actions .button{font-size:12px;min-height:40px}
.script-workspace #script-form{gap:12px}
.script-result:not(.empty-state){white-space:normal;overflow-wrap:anywhere;line-height:1.8}
.script-result p,.script-result ul,.script-result ol{margin-block:12px}
.script-result table{width:100%;border-collapse:collapse;font-size:13px}
.script-result td,.script-result th{padding:9px;border:1px solid var(--line);text-align:left}
.script-result pre{overflow:auto;max-width:100%;background:var(--surface-2);padding:12px;border-radius:10px}
.script-output{min-width:0;position:sticky;top:16px}
.script-pending{font-size:14px;line-height:1.7;overflow-wrap:anywhere}.script-pending>p{margin:10px 0}.script-pending .inline-actions{margin-top:16px}.script-pending .inline-actions .button{min-height:44px;font-size:14px}
.script-history .list-row button{min-width:0;overflow-wrap:anywhere}.script-history .list-row small{max-width:50%;text-align:right;white-space:normal}
.script-result+ p{margin-top:24px}
.pack-contents{margin-top:32px;border-top:1px solid var(--line);padding-top:20px}
.pack-item{align-items:center;gap:20px}
.asset-description{min-width:0;display:flex;flex-direction:column;gap:6px;overflow-wrap:anywhere}
.pack-item .inline-actions{flex:none;flex-wrap:wrap;justify-content:flex-end}
.pack-reader{margin-top:32px;padding-top:24px;border-top:1px solid var(--line-2);scroll-margin-top:20px}
.pack-body{max-width:78ch;padding:20px 0;background:transparent!important;overflow-wrap:anywhere}
.workspace-section{min-width:0}
.workspace-section .workspace-section-title{margin:0;padding-bottom:16px;border-bottom:1px solid var(--line);font-size:18px}
#script-result-panel .panel-head h2,#redeem-form>h2,#profile-login-title{font-size:18px}
.space-assets{margin-bottom:24px}
#view-files .workspace-section .file-tools{margin-top:20px}
#view-files .workspace-section .file-actions{width:100%;justify-content:flex-end}
.space-files .table-wrap{margin-inline:-24px}
.space-files .file-table td.empty-state{text-align:center;padding:24px 18px}
.space-assets>.muted{margin:12px 0 18px}
.space-assets .list-row{gap:20px}.space-assets .inline-actions{flex-wrap:wrap;justify-content:flex-end}
.space-assets .inline-actions .button{font-size:12px;padding:7px 10px;min-height:40px}
#asset-editor{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}#asset-content{line-height:1.75;resize:vertical;min-height:260px}
#view-billing .token-summary{display:flex;align-items:center;gap:32px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line)}
.token-summary>p{font-size:13px;color:var(--text-2)}
.token-summary strong{display:block;margin-top:6px;color:var(--text);font-size:18px;font-variant-numeric:tabular-nums}
.token-summary>.small{flex:1;min-width:240px;max-width:64ch;line-height:1.8}
.billing-cycles{display:flex;gap:8px;grid-column:1/-1}.billing-cycles button[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-ink)}
.product-list>.muted,.product-list>.empty-state{grid-column:1/-1}.product-card p{line-height:1.7}.product-card .button{margin-top:auto}
.quote-panel{margin:24px 0}.quote-total{display:block;font-size:24px;margin:20px 0;font-variant-numeric:tabular-nums}.quote-line{padding:14px 0;border-bottom:1px solid var(--line);line-height:1.8}
#quote-details>.small{margin:14px 0;max-width:75ch}.quote-panel .inline-actions{margin-top:20px;flex-wrap:wrap}
#token-ledger .list-row{gap:20px;font-variant-numeric:tabular-nums}
/* 第五版知识库：四档入口、使用步骤、内容分类与两条使用通道。 */
#view-packs:not([hidden]){display:flex;flex-direction:column;gap:26px;width:100%}
#view-packs>.section-head{margin-bottom:0}
#view-packs>.pack-detail,#view-packs>#pack-error{margin-top:0}
.knowledge-ladder{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.knowledge-ladder article{display:flex;flex-direction:column;gap:4px;min-width:0;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow-wrap:anywhere}
.knowledge-ladder article:first-child{background:transparent;border-style:dashed}
.knowledge-ladder article.is-current{border-color:var(--accent);background:var(--accent-soft)}
.knowledge-ladder h2{font-size:14px;font-weight:600;line-height:1.5}
.knowledge-ladder h2 span{white-space:nowrap;font-variant-numeric:tabular-nums}
.knowledge-ladder p,.knowledge-ladder .small{font-size:12px;line-height:1.6;color:var(--text-2)}
.knowledge-ladder article.is-current>.small{color:var(--accent-ink)}
.knowledge-block-head{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 10px;margin-bottom:16px}
.knowledge-block-head h2,.knowledge-unlock .knowledge-block-head h2{margin:0;font-size:18px;line-height:1.5;letter-spacing:-.02em}
.knowledge-block-head p{font-size:12px}
.knowledge-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));list-style:none;margin:6px 0 0;padding:0}
.knowledge-steps li{display:flex;gap:14px;min-width:0;padding:6px 26px 6px 0}
.knowledge-steps li+li{border-left:1px solid var(--line);padding-left:26px}
.knowledge-step-number{flex:none;font-size:28px;line-height:1;font-weight:800;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.knowledge-steps h3{margin:4px 0 5px;font-size:15px;line-height:1.5}
.knowledge-steps p,.knowledge-specs p{font-size:13px;line-height:1.7;color:var(--text-2);overflow-wrap:anywhere}
.knowledge-steps .text-link{margin-top:10px;min-height:44px;font-size:13px}
.knowledge-specs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:6px}
.knowledge-specs article{display:flex;flex-direction:column;align-items:flex-start;gap:8px;min-width:0;padding:8px 22px}
.knowledge-specs article+article{border-left:1px solid var(--line)}
.knowledge-specs svg{width:24px;height:24px;flex:none;margin-bottom:2px;color:var(--accent-ink)}
.knowledge-specs h3{margin:0;font-size:14px;line-height:1.5}
.knowledge-channels{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:stretch}
.knowledge-channels>section{min-width:0;padding:24px;border:1px solid var(--line);border-radius:16px;overflow-wrap:anywhere}
.knowledge-unlock{background:var(--surface)}
.knowledge-own-ai{display:flex;flex-direction:column;gap:12px;background:var(--surface-2)}
.knowledge-own-ai .knowledge-block-head{margin-bottom:6px}
.knowledge-own-ai>p,.knowledge-unlock>.muted{font-size:13px;line-height:1.8}
.knowledge-unlock #pack-catalog{margin-top:20px}
.knowledge-unlock .block-title,.knowledge-unlock #redeem-form h3{font-size:14px;line-height:1.5}
.knowledge-unlock #pack-catalog>.block-title,.knowledge-unlock #redeem-form h3{margin:0}
.knowledge-unlock-benefits{display:grid;gap:8px;margin:16px 0 0;padding-left:20px;color:var(--text-2);font-size:13px;line-height:1.7}
.knowledge-unlock-benefits li::marker{color:var(--accent-ink)}
.knowledge-unlock .pack-list{grid-template-columns:minmax(0,1fr);margin-top:12px}
.knowledge-unlock #pack-list>.empty-state,.knowledge-unlock #pack-list>.muted{min-height:64px;padding:14px 16px;background:var(--surface-2);border:0;border-radius:12px}
.knowledge-unlock .pack-card{padding:16px;background:var(--surface-2);border-radius:12px}
.knowledge-unlock .pack-card h2{font-size:16px;line-height:1.5}
.knowledge-unlock .pack-card .inline-actions{flex-wrap:wrap}
.knowledge-unlock #redeem-layout{margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.knowledge-unlock>.inline-actions{margin-top:20px;flex-wrap:wrap;gap:8px 16px}
.knowledge-unlock>.inline-actions .text-link{min-height:44px;font-size:12px}
.knowledge-own-ai>h3{margin:0;font-size:14px;line-height:1.5}
.knowledge-ai-steps{display:grid;gap:14px;margin:0;padding:0;list-style:none;counter-reset:knowledge-ai}
.knowledge-ai-steps li{position:relative;display:flex;flex-direction:column;gap:4px;padding-left:32px;min-width:0;counter-increment:knowledge-ai}
.knowledge-ai-steps li::before{content:counter(knowledge-ai);position:absolute;top:0;left:0;display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);font-size:12px;font-weight:700}
.knowledge-ai-steps strong{font-size:13px;line-height:1.6}
.knowledge-ai-steps span{font-size:12px;line-height:1.7;color:var(--text-2)}
.knowledge-own-ai .knowledge-mcp-note{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--text-2)}
@media(max-width:1100px){
  .knowledge-ladder{grid-template-columns:repeat(2,minmax(0,1fr))}
  .knowledge-specs{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:16px}
  .knowledge-specs article:nth-child(2n+1){border-left:0}
  .knowledge-channels{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:860px){
  .knowledge-steps{grid-template-columns:minmax(0,1fr)}
  .knowledge-steps li{padding:12px 0 14px}
  .knowledge-steps li+li{border-left:0;border-top:1px solid var(--line);padding-left:0}
}
@media(max-width:700px){
  .knowledge-specs{grid-template-columns:minmax(0,1fr);row-gap:0}
  .knowledge-specs article{padding:12px 0 14px}
  .knowledge-specs article+article{border-left:0;border-top:1px solid var(--line);padding-left:0}
}
@media(max-width:640px){
  #view-packs>.section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .knowledge-channels>section{padding:22px 18px}
  .knowledge-unlock .inline-actions,.knowledge-unlock .code-row,#view-packs .pack-detail .inline-actions{flex-direction:column;align-items:stretch}
  .knowledge-unlock .inline-actions .button,.knowledge-unlock .code-row .button,#view-packs .pack-detail .inline-actions .button{width:100%;min-height:44px}
  .knowledge-unlock .inline-actions .text-link{min-height:44px}
  .chat-membership-footer>.button{min-height:44px}
}
@media(max-width:560px){.knowledge-ladder{grid-template-columns:minmax(0,1fr)}}
@media(max-width:1100px){.script-workspace{grid-template-columns:1fr}.script-output{position:static}.pack-item{align-items:flex-start;flex-direction:column}.pack-item .inline-actions{justify-content:flex-start}}
@media(min-width:701px){
  .nav-compact .sidebar{width:76px;flex-basis:76px}
  .nav-compact .side-head{justify-content:center;padding-inline:8px}
  .nav-compact .side-heading{display:none}
  .nav-compact .side-nav{padding-inline:10px}
  .nav-compact .side-nav a{justify-content:center;padding-inline:0}
  .nav-compact .side-nav a>span,.nav-compact .account-caption{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .nav-compact .side-account{padding:8px}
  .nav-compact .account-toggle{justify-content:center}
  .nav-compact .account-chevron{display:none}
}
@media(max-width:1280px){.application-grid{grid-template-columns:repeat(3,minmax(0,280px))}}
@media(max-width:1100px){.application-grid{grid-template-columns:repeat(2,minmax(0,340px))}}
@media(max-width:760px){.application-grid{grid-template-columns:minmax(0,340px)}}
@media(max-width:1200px){.app-page .main-inner{padding:24px}}
@media(max-width:900px){
  #view-billing .account-summary{grid-template-columns:repeat(2,minmax(0,1fr));padding:20px 0}
  #view-billing .account-summary p{padding:2px 12px;border-top:0;border-right:1px solid var(--line)}
  #view-billing .account-summary p:nth-child(2n){padding-right:0;border-right:0}
  #view-billing .account-summary p:nth-child(2n+1){padding-left:0}
  #view-billing .account-summary p:nth-child(3),#view-billing .account-summary p:nth-child(4){margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
  .app-page .prompt-starters{grid-template-columns:repeat(3,minmax(0,1fr));max-width:100%;gap:10px}
  .app-page .prompt-starters .button{padding:14px;min-height:140px}
  .application-tools{align-items:stretch;flex-direction:column;gap:14px}.application-search{width:100%}
  .learning-next{align-items:flex-start;flex-direction:column}
}
@media(max-width:700px){
  .app-page #workspace-recovery{width:calc(100% - 36px);margin:18px auto}
  .space-assets{margin-bottom:20px}
  .space-files .table-wrap{margin-inline:-18px}
  .space-files .file-table tr:has(>td.empty-state),.space-files .file-table td.empty-state{display:block;width:100%}
  #view-files .workspace-section .file-actions{justify-content:flex-start}
  .space-assets .list-row{align-items:flex-start;flex-direction:column}.space-assets .inline-actions{justify-content:flex-start}
  #view-billing .token-summary{gap:20px}.token-summary>.small{min-width:0;flex-basis:100%}.quote-panel .inline-actions .button{width:100%}
  #view-billing .workspace-section{margin-top:20px}
  #view-billing .billing-overview{margin-top:0}
  #token-ledger .list-row{align-items:flex-start;flex-direction:column;gap:6px}.script-result{overflow-x:auto}
  .script-history .list-row{align-items:flex-start;flex-direction:column;gap:4px}.script-history .list-row small{max-width:100%;text-align:left}
  .workspace-page-title{display:none}
  .app-page .sidebar{top:calc(var(--shell-header-height) + 1px)}
  .app-page .nav-scrim{top:calc(var(--shell-header-height) + 1px)}
  .app-page .main-inner{padding:18px 16px 8px}
  .app-page #view-chat{min-height:540px}
  .app-page .chat-heading h1{font-size:14px}
  .app-page .chat-heading p{display:none}
  .chat-teacher{gap:9px}.chat-avatar{width:36px;height:36px}
  .chat-heading-actions{gap:4px}
  .app-page #new-session{padding:8px 10px}.app-page #new-session svg{display:none}
  .app-page .chat-welcome{padding:24px 0}
  .app-page .chat-welcome h2{font-size:25px}
  .app-page .chat-welcome>p{font-size:13px;margin-top:12px}
  .app-page .prompt-starters{grid-template-columns:1fr;margin-top:24px;gap:9px}
  .app-page .prompt-starters .button{display:grid;grid-template-columns:28px 1fr;gap:2px 12px;padding:13px 16px;min-height:72px}
  .prompt-starters .prompt-icon{grid-row:1/span 2;align-self:center}
  .prompt-starters .prompt-description{grid-column:2}
  .app-page .composer{padding:14px 12px 10px;border-radius:18px}
  .app-page .composer textarea{font-size:16px;min-height:65px}
  .app-page .composer-area{width:100%;margin:0}
  .app-page .chat-image-add{width:36px;flex:none;font-size:12px;padding:6px}
  .chat-image-label{display:none}
  .app-page .composer-bottom .search-toggle{order:-1;flex-basis:100%}
  .app-page .composer-resource{padding:6px 9px;font-size:11px;gap:5px}
  .chat-membership-popover{padding:12px;max-height:calc(100dvh - 180px)}
  .chat-membership-row{padding:9px 7px;font-size:12px;gap:7px}
  .chat-membership-state{font-size:11px}
  .chat-membership-footer>.button{padding-inline:11px;font-size:12px}
  .app-page .composer-caption{font-size:11px}
  .app-page .history-popover{top:48px;max-height:calc(100dvh - 180px)}
  .application-catalog .section-head{align-items:flex-start;margin-bottom:24px}
  .application-catalog .section-head h1{font-size:24px}
  #application-count{white-space:nowrap;margin-top:6px}
  .application-grid{grid-template-columns:1fr;gap:16px}
  .application-filters button{min-height:44px;padding-inline:14px}
  .learning-path li{gap:12px}
  .learning-page .section-head{flex-direction:column;gap:18px}
  .lecturer-intro{align-items:flex-start;flex-direction:column}
  .lecturer-services{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){.application-card:hover,.application-card:focus-within{transform:none}}