:root{--ink:#25324b;--muted:#788297;--line:#e2e6f0;--accent:#5358c9;--soft:#f0f1fc;--paper:#fff;--navy:#1c2541}*{box-sizing:border-box}body{margin:0;background:#f5f6fa;color:var(--ink);font-family:Inter,"Segoe UI",sans-serif;font-size:14px}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8c91ee;outline-offset:3px}[hidden]{display:none!important}.topbar{height:80px;background:white;border-bottom:1px solid var(--line);padding:0 32px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:0;color:var(--ink);font-size:24px;font-weight:750;letter-spacing:-1px;text-decoration:none}.brand>span:not(.brand-icon){color:var(--accent)}.brand-icon{display:grid;place-items:center;background:var(--accent);color:white;width:38px;height:38px;border-radius:11px;font-size:19px;margin-right:12px;position:relative}.brand-icon span{position:absolute;font-size:13px;right:5px;bottom:4px;color:#d6d8ff}.brand small{font-size:9px;font-weight:650;letter-spacing:1.6px;border-left:1px solid var(--line);padding-left:20px;margin-left:20px;color:var(--muted)}.top-right{display:flex;align-items:center;gap:24px}.connection{font-size:12px;color:var(--accent)}.connection:before{content:'';display:inline-block;height:6px;width:6px;background:#797ee1;border-radius:50%;margin-right:8px}.top-right .btn span{margin-left:10px;color:var(--accent);font-weight:700}main{max-width:1860px;padding:28px 32px 0;margin:auto}.welcome{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px;gap:30px}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:750;color:var(--accent);margin:0 0 10px}h1{font-size:27px;letter-spacing:-.8px;font-weight:700;margin:0 0 8px}.welcome p:last-child{font-size:13px;color:var(--muted);margin:0}.course-progress{width:250px;flex-shrink:0}.course-progress>div:first-child{display:flex;justify-content:space-between;font-size:11px;margin-bottom:10px}.course-progress strong{font-size:11px;color:var(--accent)}.progress-track{height:6px;background:#e0e3f2;border-radius:10px;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}.course-progress small{display:block;font-size:10px;color:var(--muted);margin-top:9px}.atelier{display:grid;grid-template-columns:minmax(255px,.85fr) minmax(280px,.95fr) minmax(430px,1.65fr);gap:18px;min-height:660px;height:calc(100dvh - 175px);max-height:1000px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:13px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 3px 8px #28315b05;min-width:0}.panel-heading{display:flex;align-items:center;justify-content:space-between;padding:20px 18px;border-bottom:1px solid var(--line);min-height:65px;gap:8px}.panel-heading>div{display:flex;align-items:center;gap:10px}.panel-heading h2{font-size:13px;font-weight:700;margin:0;white-space:nowrap}.section-number{font:11px ui-monospace,Consolas,monospace;color:#9299ae;background:#f2f3f9;padding:4px 5px;border-radius:4px}.subtle{font-size:11px;color:var(--muted)}.tab-strip{display:flex;gap:18px;padding:0 18px;border-bottom:1px solid var(--line)}.tab-strip button{border:0;border-bottom:2px solid transparent;background:none;padding:14px 0;font-size:11px;color:var(--muted)}.tab-strip button.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:700}.explorer-body{padding:16px;overflow:auto;flex:1}.search-box{display:flex;align-items:center;border:1px solid var(--line);border-radius:7px;padding:7px 9px;gap:6px;margin-bottom:20px;background:#fafbfe}.search-box>span{font-size:20px;color:var(--muted);line-height:1}.search-box input{width:100%;min-width:0;border:0;background:transparent;font-size:10px;padding:3px;outline-offset:0}.database-name{display:flex;align-items:center;font:600 12px ui-monospace,Consolas,monospace;gap:7px;margin-bottom:14px}.database-name small{font:8px "Segoe UI",sans-serif;color:var(--muted);margin-left:auto;letter-spacing:.5px}.database-dot{width:9px;height:10px;border:1px solid var(--accent);border-radius:3px;background:#e8eafb}.table-card{border:1px solid var(--line);border-radius:7px;margin-bottom:10px;overflow:hidden}.table-card summary{padding:10px;background:#f8f9fd;list-style:none;display:flex;gap:8px;align-items:center;cursor:pointer;font:600 12px ui-monospace,Consolas,monospace}.table-card summary::-webkit-details-marker{display:none}.table-card summary:before{content:'›';font-size:16px;color:var(--muted)}.table-card[open] summary:before{transform:rotate(90deg)}.table-card summary small{margin-left:auto;background:white;color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:1px 5px;font:9px "Segoe UI",sans-serif}.field-row{display:flex;width:100%;align-items:center;gap:7px;padding:7px 11px;border:0;background:white;text-align:left;font:11px ui-monospace,Consolas,monospace;color:var(--ink)}.field-row:hover{background:#eef0fd}.field-row small{font-size:9px;color:#8992a8;margin-left:auto;overflow:hidden;text-overflow:ellipsis;max-width:75px;white-space:nowrap}.key-badge{font:700 8px "Segoe UI",sans-serif;min-width:16px;color:#a0a7b8}.pk{color:#b08a2e!important}.fk{color:#6a70cb!important}.table-data{display:block;width:100%;border:0;border-top:1px solid #edf0f7;background:white;padding:8px;color:var(--accent);text-align:left;font-size:10px}.table-data:hover{background:var(--soft)}.legend{display:flex;gap:15px;margin-top:20px;font-size:9px;color:var(--muted)}.legend b{font-size:8px;margin-right:3px}.panel-foot{border-top:1px solid var(--line);padding:12px 16px;color:var(--muted);font-size:9px;margin-top:auto;display:flex;align-items:center;justify-content:space-between;min-height:40px}.online-dot{width:7px;height:7px;background:#878ce0;border-radius:50%}.mission-top{padding:22px 12px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:38px minmax(0,1fr) 38px;align-items:center;gap:8px}.chapter{display:inline-block;padding:5px 9px;background:var(--soft);color:var(--accent);font-size:10px;font-weight:650;border-radius:5px;margin-bottom:22px}.mission-step{font-size:9px;letter-spacing:1.5px;color:var(--muted);margin-bottom:8px}.mission-top h3{font-size:22px;letter-spacing:-.6px;line-height:1.2;font-weight:650;margin:0}.mission-nav{display:flex;justify-content:space-between}.text-button{border:0;background:none;font-size:10px;color:var(--accent);padding:3px 0}.text-button:hover{text-decoration:underline}.chat-log{flex:1;overflow:auto;padding:22px 18px;min-height:180px}.chat-message{margin-bottom:20px}.chat-author{display:flex;align-items:center;gap:8px;margin-bottom:9px;font-size:11px;font-weight:650}.avatar{display:grid;place-items:center;width:25px;height:25px;border-radius:8px;background:#e6e7fc;color:var(--accent);font-size:11px}.chat-author small{font-size:8px;color:var(--muted);font-weight:400;margin-left:auto}.bubble{margin-left:32px;border-radius:0 10px 10px 10px;background:#f2f3f9;padding:13px;font-size:12px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.chat-message.success .bubble{background:#e9ebff;color:#454bad}.chat-message.error .bubble{background:#fff3e9;color:#925b2a}.chat-message.student .bubble{background:#eef2f8}.mission-actions{padding:16px;border-top:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:12px}.mission-actions>.btn{width:100%;font-size:11px;padding:9px}.mission-actions .btn span{float:right;color:var(--muted)}.mission-actions small{font-size:9px;color:var(--muted);text-align:center}.readonly-tag{font-size:8px;letter-spacing:.8px;color:var(--accent);background:var(--soft);padding:5px 7px;border-radius:4px}.editor-file{display:flex;justify-content:space-between;background:var(--navy);color:#a6b2ce;padding:13px 18px;font-size:10px}.editor-file>span:first-child{color:#dfe5f7}.editor-file i{display:inline-block;width:5px;height:5px;border-radius:50%;background:#999ff0;margin-right:7px}.editor-wrap{display:flex;background:var(--navy);height:240px;min-height:180px;padding:12px 0 22px;position:relative}.editor-wrap pre{color:#6f7d9f;text-align:right;width:45px;flex-shrink:0;font:13px/1.9 ui-monospace,Consolas,monospace;padding:0 12px 0 0;margin:0;overflow:hidden;user-select:none}.editor-wrap textarea{width:100%;resize:none;background:transparent;border:0;color:#e0e6fb;outline:0;font:13px/1.9 ui-monospace,Consolas,monospace;padding:0 18px 0 5px;tab-size:4;white-space:pre;overflow:auto}.editor-wrap textarea:focus{box-shadow:inset 0 0 0 1px #727cbd}.editor-wrap textarea::placeholder{color:#7e8bb0}.editor-toolbar{padding:13px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:8px}.keyboard-hint{color:var(--muted);font-size:9px}.editor-toolbar>div{display:flex;gap:8px}.btn{border-radius:6px;font-size:11px;padding:8px 12px;font-weight:600}.btn-primary{--bs-btn-bg:var(--accent);--bs-btn-border-color:var(--accent);--bs-btn-hover-bg:#4146ad;--bs-btn-hover-border-color:#4146ad;--bs-btn-active-bg:#4146ad;--bs-btn-disabled-bg:#9598c5;--bs-btn-disabled-border-color:#9598c5;background:var(--accent);color:white;border:1px solid var(--accent)}.btn-outline-secondary{--bs-btn-color:#5a6484;--bs-btn-border-color:#dce0ef;--bs-btn-hover-bg:#f0f1fc;--bs-btn-hover-color:#454b8f;--bs-btn-hover-border-color:#c4c8e8;background:white;color:#5a6484;border:1px solid #dce0ef}.results-heading{display:flex;align-items:center;justify-content:space-between;padding:17px 18px;border-bottom:1px solid var(--line);gap:12px}.results-heading>div{display:flex;align-items:center;gap:8px}.results-heading h3{font-size:11px;margin:0;font-weight:650}.results-heading>span{font-size:9px;color:var(--muted)}.results-dot{height:6px;width:6px;border-radius:50%;background:#8b90c6}.results-content{flex:1;overflow:auto;min-height:170px}.empty-state{display:flex;align-items:center;justify-content:center;flex-direction:column;height:100%;min-height:210px;text-align:center;padding:20px;color:var(--muted)}.empty-icon{font-size:25px;border:1px solid #e0e3f2;border-radius:11px;padding:0 11px;background:#f4f5fd;color:#8a91bc;margin-bottom:16px}.empty-state h4{font-size:12px;font-weight:600;color:#5a648b;margin-bottom:8px}.empty-state p{font-size:11px;line-height:1.9}.empty-tag{font-size:9px;border:1px solid var(--line);border-radius:20px;padding:4px 10px}.result-table{width:100%;font:11px/1.5 ui-monospace,Consolas,monospace;border-collapse:collapse;white-space:nowrap}.result-table th{background:#f1f3fb;color:#666d9a;padding:10px 12px;position:sticky;top:0;border-bottom:1px solid var(--line);font-weight:600}.result-table td{padding:9px 12px;border-bottom:1px solid #edf0f8;color:#4f5d7a}.result-table tr:nth-child(even){background:#fafbfe}.null-value{font-size:9px;color:#9ba3b9;font-style:italic}#query-notice{padding:10px 16px;font-size:11px;border-bottom:1px solid var(--line);background:#fff5e9;color:#865827}#query-notice.success{background:#eceeff;color:var(--accent)}.page-footer{display:flex;justify-content:space-between;padding:20px 0;font-size:10px;color:#969eb3}.page-footer b{color:#757e9d;font-weight:600}.explorer-tip{font-size:11px;line-height:1.8;color:var(--muted)}.relation-item{font-size:10px;border:1px solid var(--line);border-radius:6px;padding:10px;margin-bottom:8px;display:block;background:#fafbfe;width:100%;color:var(--ink);text-align:left;overflow-wrap:anywhere}.relation-item span{display:block;color:var(--accent);margin-top:5px}.relation-item:hover{border-color:#9298cf}.relation-map{margin:5px 0 16px}.relation-map svg{width:100%;height:auto}.map-node{cursor:pointer}.map-node rect{fill:#f3f4fd;stroke:#c5cae8;stroke-width:1.5}.map-node text{fill:#4b5488;font:11px ui-monospace,Consolas,monospace}.map-node.active rect{fill:#e2e5ff;stroke:#5358c9;stroke-width:2}.map-edge{stroke:#b8bee0;stroke-width:1.4;fill:none}.map-edge.active{stroke:#5358c9;stroke-width:2.4}dialog{border:1px solid var(--line);border-radius:16px;padding:26px;color:var(--ink);width:min(700px,94vw);max-height:85dvh;overflow:auto;box-shadow:0 30px 100px #1c254130}dialog::backdrop{background:#1c254170;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.dialog-heading h2{font-size:23px;margin:0}.close-dialog{border:0;background:#f0f1fa;border-radius:50%;width:32px;height:32px;font-size:22px;color:#657096}.roadmap-chapter{font-size:12px;color:var(--accent);margin:22px 0 10px}.mission-link{display:flex;gap:12px;align-items:center;width:100%;text-align:left;background:white;border:1px solid var(--line);border-radius:7px;margin:6px 0;padding:10px;font-size:12px;color:var(--ink)}.mission-link.active{background:var(--soft);border-color:#969dd8}.mission-link small{color:var(--accent);margin-left:auto}.schema-dialog{width:min(1000px,95vw)}#full-map{max-width:800px;margin:auto}#full-map svg{width:100%}#full-relations{display:grid;grid-template-columns:1fr 1fr;gap:5px}#history-list button{display:block;background:#f3f4fb;border:1px solid var(--line);border-radius:8px;text-align:left;width:100%;padding:14px;margin-bottom:10px}#history-list pre{margin:0;white-space:pre-wrap;font-size:12px;color:var(--accent)}.alert{font-size:13px}.no-match{font-size:11px;color:var(--muted);padding:16px 0}
@media(min-width:1650px){.atelier{grid-template-columns:310px 360px 1fr}.editor-wrap{height:280px}.chat-log{padding:26px}.bubble{font-size:13px}.panel-heading h2{font-size:14px}}
@media(max-width:1200px){main{padding:22px 18px 0}.topbar{padding:0 18px}.atelier{grid-template-columns:240px 270px minmax(340px,1fr);gap:12px}.editor-toolbar{flex-wrap:wrap}.keyboard-hint{display:none}.editor-toolbar>div{width:100%;justify-content:flex-end}.panel-heading{padding:16px 12px}.panel-heading h2{font-size:12px}.subtle{font-size:10px}.mission-top{padding:20px 10px}.brand small{display:none}}
@media(max-width:960px){.atelier{height:auto;max-height:none;grid-template-columns:260px 1fr}.explorer{grid-row:1 / 3;max-height:1100px}.mission-panel{max-height:540px}.query-panel{min-height:550px;grid-column:2}.welcome{align-items:flex-start}h1{font-size:22px}.course-progress{width:190px}.top-right{gap:12px}.editor-wrap{height:220px}}
@media(max-width:640px){.topbar{height:65px;padding:0 14px}.brand{font-size:20px}.brand-icon{width:30px;height:30px}.connection{display:none}.welcome{display:block}.course-progress{width:100%;margin-top:22px}.atelier{display:flex;flex-direction:column}.explorer{max-height:380px}.mission-panel{min-height:470px}.query-panel{min-height:600px}.page-footer{gap:15px;font-size:9px}.page-footer>span:last-child{display:none}#full-relations{grid-template-columns:1fr}.panel-heading h2{font-size:14px}.editor-toolbar>div{justify-content:space-between}.mission-top h3{font-size:23px}}
#question-form{display:flex;width:100%;border:1px solid var(--line);border-radius:7px;padding:5px;gap:5px}#question{min-width:0;flex:1;border:0;padding:5px;font-size:10px;background:transparent}#question-form button{border:0;border-radius:5px;width:26px;background:var(--soft);color:var(--accent)}
.header-brand{display:flex;align-items:center;gap:22px;min-width:0}.header-description{border-left:1px solid var(--line);padding-left:22px;min-width:0}.workshop-title{display:block;font-size:10px;font-weight:700;letter-spacing:1.5px;color:var(--muted)}.header-description p{margin:5px 0 0;font-size:11px;color:var(--muted);line-height:1.5}.mission-label{text-align:center;min-width:0}.mission-label h3{overflow-wrap:anywhere;font-size:21px}.mission-step{font-size:9px;letter-spacing:1px;line-height:1.6}.mission-arrow{width:38px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--soft);color:var(--accent);display:grid;place-items:center;padding:0}.mission-arrow svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.mission-arrow:hover:not(:disabled){background:#e2e5ff;border-color:#b4baed}.mission-arrow:disabled{opacity:.35}.close-dialog{display:grid;place-items:center;padding:0;flex:0 0 36px;width:36px;height:36px;line-height:1}.close-dialog svg{display:block;width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}.close-dialog:hover{background:#e2e5ff;color:var(--accent)}
@media(max-width:1100px){.header-brand{gap:15px}.header-description{padding-left:15px}.top-right{gap:12px}.header-description p{max-width:280px;font-size:10px}.connection{display:none}}
@media(max-width:640px){.topbar{height:auto;min-height:88px;gap:10px;padding:14px;align-items:flex-start}.header-brand{flex-wrap:wrap;gap:10px;flex:1}.header-description{flex-basis:100%;border:0;padding-left:0}.workshop-title{font-size:9px}.header-description p{font-size:10px;max-width:none}.top-right{padding-top:2px}.top-right .btn{white-space:nowrap;padding:7px 9px}.mission-label h3{font-size:22px}}.help-dialog{width:min(820px,94vw)}.help-mission{color:var(--accent);font-size:13px;font-weight:600;margin:0 0 12px}.manual-note{background:var(--soft);border:1px solid var(--line);padding:12px 14px;border-radius:8px;font-size:12px;line-height:1.7;color:var(--muted)}#help-topics{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.manual-topic{border:1px solid var(--line);background:white;color:var(--accent);font-size:11px;padding:7px 10px;border-radius:6px}.manual-topic:hover{background:var(--soft)}.manual-entry{border-top:1px solid var(--line);padding:22px 0 6px;scroll-margin-top:12px}.manual-entry h3{font-size:17px;margin:0 0 12px;font-weight:650}.manual-entry p{font-size:13px;line-height:1.8}.manual-entry pre{padding:18px;background:var(--navy);border-radius:9px;color:#e0e6fb;font:12px/1.8 ui-monospace,Consolas,monospace;overflow:auto}.manual-entry .manual-tip{font-size:12px;color:var(--muted);padding-left:12px;border-left:3px solid #c4c8e8}.editor-toolbar{flex-wrap:wrap}.editor-toolbar>div{flex-wrap:wrap}main{padding-bottom:24px}.atelier{height:calc(100dvh - 135px)}@media(max-width:960px){.atelier{height:auto}}@media(max-width:640px){.editor-toolbar>div{gap:6px}.editor-toolbar .btn{font-size:10px;padding:8px}.mission-panel{min-height:400px}}
#expand-schema{display:block;margin:0 0 18px}