.task-panel{min-width:0}
.intro .mini-table p{color:var(--text)}
.language-switch{display:flex;gap:3px;border:1px solid #dfd8ef;padding:4px;border-radius:999px;background:#f6f3fd;flex-shrink:0}
.language-switch button{display:flex;align-items:center;gap:7px;border:0;border-radius:999px;background:transparent;color:#655e76;padding:8px 11px;font-size:13px;font-weight:600;white-space:nowrap}
.language-switch button[aria-pressed=true]{background:#fff;color:#6544ec;box-shadow:0 1px 5px #33215a1c}
.language-switch svg{width:22px;height:15px;border-radius:2px;box-shadow:0 0 0 1px #0002;flex-shrink:0}
@media(max-width:1000px){.sidebar{gap:14px}.sidebar nav{gap:0}.sidebar nav a{padding:10px}.sidebar .beta{display:none}}
@media(max-width:800px){.sidebar{flex-wrap:wrap}.sidebar nav{order:3;width:100%;justify-content:center}.language-switch{order:2;margin-left:auto}}
@media(max-width:560px){.language-switch button{font-size:12px;padding:7px 8px}.language-switch svg{width:20px;height:14px}}
.workbench .task-brief{padding:24px 26px;background:#f0ebff;border-bottom:1px solid #d9cef4}
.workbench .task-brief>.eyebrow{color:#6544ec;font-size:12px;font-weight:500}
.workbench .task-description{margin:0;padding:0;border:0}
.workbench .task-description h3{font-size:24px;line-height:1.25;margin:10px 0 12px;letter-spacing:-.4px}
.workbench .task-description p{font-size:16px;line-height:1.75;margin:0;color:#463b61;max-width:760px}
@media(max-width:560px){.workbench .task-brief{padding:22px 20px}.workbench .task-description h3{font-size:22px}}
:root{color-scheme:light;--bg:#f7f8fc;--panel:#fff;--text:#211c35;--muted:#696477;--line:#e3e2ec;--purple:#6544ec;--lime:#d7ff65;--mono:'IBM Plex Mono',monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:'Golos Text',Arial,sans-serif;color:var(--text);font-size:16px;line-height:1.65}button,input,textarea{font:inherit}button,a,textarea,input{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button,a{transition:transform .2s,background .2s,box-shadow .2s}button:not(:disabled):hover{transform:translateY(-2px)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #8d6cfa;outline-offset:4px}[hidden]{display:none!important}.sidebar{background:var(--panel);border-bottom:1px solid var(--line);height:86px;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1260px)/2));position:sticky;top:0;z-index:10;gap:30px}.brand{display:flex;align-items:center;font-size:32px;font-weight:900;letter-spacing:-1.5px;white-space:nowrap}.brand-icon{color:var(--purple);font-size:36px;margin-right:10px}.brand-light{font-weight:500}.beta{font:12px var(--mono);color:var(--purple);letter-spacing:0;background:#eee9ff;padding:4px 8px;border-radius:5px;margin-left:14px}.nav-caption,.side-course,.side-bottom{display:none}nav{display:flex;gap:9px}nav a{display:flex;align-items:center;gap:9px;padding:11px 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--muted)}nav a:hover{background:#f1edf9}nav a.active{background:var(--text);color:#fff}nav a>span:first-child{font-size:20px}.nav-count{font:12px var(--mono);opacity:.6}main{max-width:1260px;padding:0 28px;margin:0 auto}.topbar{min-height:74px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);gap:20px}.slash{margin:0 8px;color:#a5a0b1}.auth-nav{display:flex;align-items:center;gap:15px}.auth-nav>#account-link{font-size:14px;color:var(--purple);font-weight:700}.text-button{border:0;background:transparent;color:var(--text);font-size:14px;font-weight:600;padding:10px}.auth-nav #sync-status{font-size:12px;color:var(--muted);max-width:200px}.eyebrow{font:12px var(--mono);letter-spacing:1.4px;color:var(--muted)}.view{animation:enter .4s ease}.intro{background:var(--purple);border-radius:26px;color:#fff;padding:32px 40px;display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:20px;position:relative;overflow:hidden}.intro .eyebrow{color:#e0d7ff}.square{display:inline-block;background:var(--lime);width:9px;height:9px;border-radius:2px;margin-right:6px}h1{font-size:clamp(38px,4.4vw,64px);line-height:1.04;letter-spacing:-2.7px;font-weight:800;margin:20px 0}h1 span{color:var(--purple)}.intro h1 span{color:var(--lime)}.intro p{color:#eee9ff;max-width:480px;font-size:16px;line-height:1.7}.intro-meta{display:flex;flex-wrap:wrap;gap:15px;margin-top:22px;font-size:12px;color:#fff}.intro-meta span{border:1px solid #ffffff3b;border-radius:999px;padding:6px 10px}.schema-art{position:relative;height:260px;isolation:isolate;background-image:radial-gradient(#ffffff40 1px,transparent 1px);background-size:20px 20px;transform:rotate(-2deg)}.art-label{position:absolute;top:10px;left:10px;font:11px var(--mono);letter-spacing:1.5px;color:#e4ddff}.mini-table{width:180px;position:absolute;background:#fff;border-radius:10px;box-shadow:6px 7px 0 #342578;overflow:hidden;color:var(--text);font-family:var(--mono);animation:float 6s ease-in-out infinite}.mini-table>div{padding:10px 12px;background:var(--lime);font-size:14px;font-weight:500;line-height:1.5}.mini-table>div span{float:right;font-size:10px;margin-top:5px;color:#4d582c}.mini-table p{font:12px var(--mono);margin:0;padding:8px 12px;border-bottom:1px solid #eee}.mini-table em{float:right;color:var(--muted);font-style:normal}.mini-table b{font-size:10px;color:var(--purple);margin-right:5px}.users{left:0;top:48px;transform:rotate(-6deg)}.orders{right:0;top:123px;transform:rotate(7deg);animation-delay:-3s}.orders>div{background:#ffbd79}.schema-art svg{position:absolute;inset:15px 0;width:100%;height:220px;z-index:-1;overflow:visible}.schema-art path{fill:none;stroke:var(--lime);stroke-width:2;stroke-dasharray:5 5;animation:dash 10s linear infinite}.schema-art circle{fill:var(--lime)}.relationship{position:absolute;left:47%;top:108px;background:var(--text);padding:3px 9px;border-radius:5px;font:12px var(--mono)}.art-foot{position:absolute;left:10px;bottom:0;font:11px var(--mono);color:#e4ddff}.continue-card{display:flex;gap:22px;align-items:center;background:var(--lime);border-radius:18px;padding:23px 28px;margin-top:22px;border:1px solid #bfdc61}.continue-icon{height:50px;width:50px;display:grid;place-items:center;border-radius:50%;background:var(--text);color:var(--lime);font-size:18px;flex-shrink:0}.continue-copy h2{font-size:23px;line-height:1.3;margin:6px 0}.continue-copy p{font-size:14px;margin:0;color:#546139}.continue-copy .eyebrow{font-size:11px;color:#506126}.continue-right{margin-left:auto;min-width:210px;max-width:240px;width:24%}.continue-right>span{font:12px var(--mono);color:#506126}.progress-track{height:5px;background:#bfd960;margin:8px 0 13px;border-radius:99px;overflow:hidden}.progress-track>div{background:var(--text);height:100%;width:0;transition:width .5s}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 19px;font-size:14px;font-weight:600;border-radius:10px;line-height:1.4;border:1px solid transparent}.primary{background:var(--purple);color:white;box-shadow:0 3px 0 #4326b0}.primary:hover{background:#7554f6;box-shadow:0 5px 0 #4326b0}.continue-right .primary{background:var(--text);width:100%;box-shadow:0 3px 0 #8ea535}.secondary{background:#fff;color:var(--text);border-color:#d7d3e3}.secondary:hover{background:#f0ecfd}.section-heading{display:flex;justify-content:space-between;align-items:end;margin:34px 0 22px}.section-heading h2{font-size:32px;letter-spacing:-1px;margin:8px 0 0;line-height:1.2}.muted{color:var(--muted);font-weight:400}.subtle{font-size:14px;color:var(--muted)}.lesson-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.lesson-card{text-align:left;background:#fff;border:1px solid #dcd8e9;border-radius:17px;padding:23px 19px;color:var(--text);min-height:236px;box-shadow:0 3px 0 #e5e0ef;display:flex;flex-direction:column}.lesson-card:hover{transform:translateY(-5px)!important;border-color:var(--purple);box-shadow:0 8px 0 #e5e0ef}.lesson-card:nth-child(4n+2){background:#e9e3ff}.lesson-card:nth-child(4n+3){background:#fff0d9}.lesson-card:nth-child(4n){background:#e6f7ed}.lesson-card.completed{border-color:#6544ec;box-shadow:0 3px 0 #b6a7ec}.card-top{display:flex;justify-content:space-between;align-items:center;gap:8px;font:10px var(--mono);color:var(--muted)}.card-icon{display:grid;place-items:center;height:39px;width:39px;flex-shrink:0;background:#6544ec;color:#fff;border-radius:10px;font-size:22px}.lesson-card:nth-child(4n+3) .card-icon{background:#e77c2e}.lesson-card:nth-child(4n) .card-icon{background:#288366}.lesson-card h3{font-size:19px;line-height:1.25;margin:21px 0 12px;letter-spacing:-.4px}.lesson-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.5}.card-footer{display:flex;gap:10px;margin-top:auto;padding-top:23px;font:10px var(--mono);color:var(--muted)}.completed .card-footer{color:var(--purple)}footer{display:flex;justify-content:space-between;gap:20px;margin:35px 0 0;padding:25px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.page-heading{padding:27px 0 26px}.page-heading h1{font-size:clamp(34px,4vw,54px);line-height:1.12;letter-spacing:-2px;margin:15px 0}.page-heading p{color:var(--muted);font-size:16px;max-width:760px}.practice-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:23px;padding-bottom:40px}.task-panel{background:#eee9ff;border:1px solid #dad2f6;border-radius:18px;padding:22px}.task-button{display:flex;gap:12px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:10px;font-size:14px;padding:13px 10px;color:var(--muted);margin-top:8px}.task-button span{font:12px var(--mono);padding-top:4px}.task-button.active{background:var(--purple);color:#fff}.task-description{border-top:1px solid #d1c5f4;margin-top:20px;padding-top:12px}.task-description h3{font-size:18px;line-height:1.3}.task-description p{font-size:14px;color:var(--muted)}.workbench{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;min-width:0}.editor-top{display:flex;justify-content:space-between;background:var(--text);padding:15px 20px;color:#e6ddff;font:13px var(--mono)}.sql-tag{color:#c6baf4;font-size:12px}textarea{display:block;width:100%;min-height:200px;resize:vertical;border:0;padding:23px;background:#28223a;color:var(--lime);font:15px/1.8 var(--mono);tab-size:2;border-radius:0}.editor-controls{display:flex;gap:10px;align-items:center;justify-content:end;padding:15px;border-bottom:1px solid var(--line)}.editor-controls>span{margin-right:auto;color:var(--muted);font-size:12px}.editor-controls .secondary,.editor-controls .primary{font-size:12px;padding:11px 13px}.result-heading{display:flex;justify-content:space-between;padding:18px 22px;gap:15px;align-items:center}.result-heading h3{font-size:16px;margin:0}.result-heading>span{font:12px var(--mono);color:var(--muted)}.table-scroll{padding:0 22px;overflow-x:auto;max-height:330px}table{border-collapse:collapse;width:100%;font:13px var(--mono)}th,td{text-align:left;white-space:nowrap;padding:13px;border-bottom:1px solid var(--line)}th{background:#eee9ff;color:var(--purple);position:sticky;top:0}td{color:#5b546c}.empty-state{padding:25px;text-align:center;color:var(--muted);font-size:14px}#sql-status{font-size:14px;color:#277257;margin:0 22px 12px}#sql-status.error{color:#b33842}.task-controls{display:flex;flex-wrap:wrap;gap:9px;padding:20px}.task-controls button{font-size:12px}.task-controls button:last-child{margin-left:auto}.hint{background:#f0ebff;color:#574090;margin:0 22px 22px;padding:16px;border-radius:10px;font-size:14px}.database-note{display:flex;gap:17px;border-top:1px solid var(--line);margin:0 22px 22px;padding-top:20px;font-size:14px}.database-note>span{font-size:30px;color:var(--purple)}.database-note p{font-size:12px;color:var(--muted)}.database-note a{font-size:14px;color:var(--purple);text-decoration:underline}.schema-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.schema-table{background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 4px 0 #e7e2f2}.schema-table h2{padding:20px;margin:0;background:#eee9ff;font:22px var(--mono);color:var(--purple)}.schema-table:nth-child(2) h2{background:#fff0d9;color:#a95317}.schema-table:nth-child(3) h2{background:#e6f7ed;color:#28765a}.schema-field{display:flex;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line);font:13px var(--mono);gap:10px}.schema-field small{color:var(--muted);font-size:11px}.schema-caption{padding:17px 20px;color:var(--muted);font-size:14px}.explain-card{background:var(--text);color:#fff;border-radius:22px;margin:30px 0;padding:34px}.explain-card .eyebrow{color:#bfb2e1}.explain-card h2{font-size:30px;line-height:1.3;letter-spacing:-1px}.explain-card p{color:#d0c5e1;font-size:16px;line-height:2}.explain-card code{color:var(--lime)}.explain-card .primary{background:var(--lime);color:var(--text);box-shadow:none;margin-top:12px}dialog{background:#fff;color:var(--text);border:1px solid #ddd5f0;border-radius:22px;width:calc(100% - 32px);max-width:760px;max-height:90vh;padding:27px 34px;box-shadow:0 24px 90px #25144055}dialog::backdrop{background:#2518428a;backdrop-filter:blur(5px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;gap:15px}.icon-button{border:0;background:#f2edf9;border-radius:50%;width:38px;height:38px;display:grid;place-items:center;font-size:26px;color:#665576;line-height:1;flex-shrink:0}dialog h2{font-size:34px;line-height:1.2;letter-spacing:-1px;margin:24px 0}#lesson-body p,#lesson-body li{font-size:16px;line-height:1.9;color:#5c536b}#lesson-body h3{font-size:22px;margin-top:28px;line-height:1.35}pre{background:var(--text);color:var(--lime);padding:22px;border-radius:12px;overflow-x:auto;font:14px/1.8 var(--mono)}code{font-family:var(--mono)}.lesson-callout{border-left:4px solid var(--purple);background:#f0ebff;border-radius:0 10px 10px 0;padding:19px;color:#5b437e}.quiz-box{background:#f3effc;border:1px solid #dfd4f5;border-radius:14px;padding:22px;margin-top:27px}.quiz-box h3{font-size:20px;margin:0}.quiz-box p{font-size:16px}#quiz-options{display:grid;gap:10px}#quiz-options button{background:#fff;border:1px solid #d8cee9;padding:14px;text-align:left;border-radius:10px;font-size:15px;color:var(--text)}#quiz-options button.correct{background:#e2f9b7;border-color:#8da851}#quiz-options button.wrong{background:#ffe4e4;border-color:#c87171}#quiz-feedback{color:#526f26;margin-bottom:0}.dialog-bottom{display:flex;gap:18px;align-items:center;justify-content:space-between;margin-top:25px}.dialog-bottom>span{font-size:14px;color:var(--muted)}.toast{position:fixed;right:28px;bottom:28px;background:var(--text);color:#fff;border:1px solid #b8a6e7;border-radius:13px;padding:17px 25px;box-shadow:0 8px 35px #2b205e33;z-index:50;font-size:14px}.account-summary{display:grid;grid-template-columns:1fr 1fr 1.4fr;gap:20px}.account-summary article{border-radius:20px;background:#e9e3ff;padding:30px}.account-summary article:nth-child(2){background:#fff0d9}.account-summary strong{font-size:60px;display:block;line-height:1.3;letter-spacing:-3px;margin-top:10px}.account-summary p{color:var(--muted);font-size:16px}.account-summary .account-action{background:var(--lime)}.account-action h2{font-size:32px;margin:0;line-height:1.3}.account-info{background:white;border:1px solid var(--line);padding:25px;margin:25px 0;border-radius:18px}.account-info p{font-size:16px}.account-info .muted{font-size:14px}.account-info button{margin:10px 10px 0 0}#auth-dialog{max-width:480px;padding:27px 32px}.auth-tabs{display:flex;padding:5px;background:#f0ebff;border-radius:12px;margin-top:22px;gap:6px}.auth-tabs button{flex:1;border:0;background:transparent;border-radius:9px;padding:10px;font-size:14px;color:var(--muted)}.auth-tabs button[aria-selected=true]{background:var(--purple);color:#fff}.auth-description{font-size:16px;color:var(--muted);margin-bottom:23px}#auth-dialog h2{font-size:34px;margin:25px 0 10px}#auth-form label{display:block;margin:14px 0 7px;font-size:14px;font-weight:600}#auth-form input:not([type=checkbox]){width:100%;padding:13px 15px;border:1px solid #d8d0e8;border-radius:10px;background:#faf8ff;color:var(--text);font-size:16px;min-width:0}#auth-form input:not([type=checkbox]):focus{border-color:var(--purple)}#auth-form .show-password{display:flex;gap:9px;align-items:center;color:var(--muted);font-weight:400}#show-password{accent-color:var(--purple);width:17px;height:17px}.field-help,.auth-footnote{font-size:12px;color:var(--muted)}.form-error{color:#b33842;font-size:14px;line-height:1.5}#auth-submit{width:100%;margin-top:5px}.auth-footnote{margin-top:21px;text-align:center}.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}@keyframes enter{from{opacity:0;translate:0 8px}to{opacity:1;translate:0 0}}@keyframes float{50%{translate:0 -8px}}@keyframes dash{to{stroke-dashoffset:-100}}@media(max-width:1100px){.intro{padding:30px}.intro h1{font-size:51px}.lesson-grid{grid-template-columns:repeat(2,1fr)}.lesson-card{min-height:215px}.card-top{font-size:12px}.card-footer{font-size:12px}.lesson-card h3{font-size:22px}.lesson-card p{font-size:16px}.intro-meta{gap:8px}.schema-art .mini-table{width:158px}.editor-controls>span{display:none}.practice-layout{grid-template-columns:240px minmax(0,1fr)}.sidebar{padding:0 28px}.schema-field{padding:13px}.schema-table h2{padding:18px}}@media(max-width:800px){.sidebar{height:auto;padding:16px 22px;flex-wrap:wrap;gap:13px}.brand{font-size:27px}.brand-icon{font-size:30px}nav a{font-size:13px;padding:9px 13px}nav a>span:first-child,.nav-count{display:none}.beta{font-size:11px}.intro{grid-template-columns:1fr 1fr;padding:26px}.intro h1{font-size:42px}.intro p{font-size:14px}.intro-meta{font-size:11px}.schema-art{height:250px}.schema-art .mini-table{width:145px}.mini-table>div{font-size:12px}.mini-table p{font-size:11px}.mini-table>div span{font-size:9px}.continue-copy h2{font-size:20px}.continue-copy p{font-size:14px}.continue-card{padding:22px;gap:18px}.continue-icon{display:none}.continue-right{min-width:175px}.practice-layout{grid-template-columns:1fr}.task-panel{padding:20px}#task-list{display:flex;gap:7px;overflow-x:auto}.task-button{min-width:170px;font-size:14px}.task-description{margin-top:15px}.task-description h3{margin:8px 0}.schema-grid{grid-template-columns:1fr}.schema-field{font-size:14px;padding:14px 20px}.schema-field small{font-size:12px}.account-summary{grid-template-columns:1fr 1fr}.account-summary .account-action{grid-column:1/-1}.auth-nav{gap:8px}.auth-nav #sync-status{max-width:130px;font-size:11px}.topbar>span{font-size:12px}}@media(max-width:560px){.sidebar{position:static;padding:14px 18px;gap:10px}.brand{font-size:29px}.sidebar nav{width:100%;gap:6px;justify-content:space-between}.sidebar nav a{font-size:12px;padding:9px 14px}.sidebar .beta{margin-left:auto}main{padding:0 16px}.topbar{min-height:77px;gap:9px;flex-wrap:wrap;padding:14px 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