.content-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:36px 0 60px}.content-card{display:grid;align-content:start;gap:8px;min-width:0}.content-card h2{font-size:22px;line-height:1.25;margin:4px 0 0}.content-card p{font-size:15px;margin:0;overflow-wrap:anywhere}.content-card small{color:var(--muted)}.content-card:hover h2{text-decoration:underline}.content-cover{width:100%;height:auto;object-fit:cover;border-radius:8px;margin-bottom:8px}.content-cover-blank{display:grid;place-items:center;background:#dceaff;color:#194ea4}.content-cover-blank.sheet{background:var(--orange);color:#111}.content-cover-blank.quiz{background:#e3f4ea;color:#165339}.content-byline{display:inline-flex;align-items:center;gap:10px;margin:4px 0 24px;font-size:14px}.content-byline img{border-radius:50%;object-fit:cover}.content-hero{width:100%;height:auto;border-radius:8px;margin-bottom:28px}.content-body{font-size:17px;line-height:1.7;overflow-wrap:anywhere}.content-body h2{font-size:26px;margin:36px 0 8px}.content-body h3{font-size:20px;margin:28px 0 6px}.content-body a{text-decoration:underline}.content-body blockquote{margin:20px 0;padding:4px 18px;border-left:4px solid var(--border);color:var(--muted)}.content-body code,.content-body pre{background:#f4f4f5;border-radius:4px;font-size:14px}.content-body pre{padding:14px;overflow-x:auto}.content-body code{padding:1px 4px}.content-body table{border-collapse:collapse;display:block;overflow-x:auto}.content-body td,.content-body th{border:1px solid var(--border);padding:6px 10px}.content-article .ws-banner{margin-top:40px}.content-sheet{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.content-sheet>div{flex:1 1 240px}.content-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid var(--border)}.content-row>div{min-width:0;flex:1 1 260px}.quiz-question{display:grid;gap:10px}.quiz-option{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px}.md-preview{border:1px solid var(--border);border-radius:8px;padding:16px;max-height:520px;overflow:auto}@media (max-width:900px){.content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:600px){.content-grid{grid-template-columns:minmax(0,1fr);gap:28px}}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}.button.small{min-height:0;padding:6px 12px;font-size:13px}.quiz-option input:not([type]),.quiz-option input[type=text]{min-width:0}:root{--app-bg:#f5f6fa;--card-border:#e6e8ef;--shadow-sm:0 1px 2px rgba(16,24,40,0.05);--shadow-md:0 10px 30px rgba(16,24,40,0.1);--shadow-lg:0 24px 60px rgba(16,24,40,0.18);--radius:14px;--orange-deep:#e8661a;--green:#1d7a4c;--green-pale:#e3f4eb;--top-h:64px;--side-w:248px}.app-shell{min-height:100vh;background:var(--app-bg)}.app-top{position:sticky;top:0;z-index:50;height:var(--top-h);display:flex;align-items:center;gap:18px;padding:0 20px;background:rgba(255,255,255,.94);-webkit-backdrop-filter:saturate(1.4) blur(8px);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--card-border)}.app-top .brand{flex:none;width:calc(var(--side-w) - 38px)}.top-search{flex:0 1 420px;display:flex;align-items:center;gap:10px;height:40px;padding:0 12px;border:1px solid var(--card-border);border-radius:10px;background:#f7f8fb;color:var(--muted);font-size:14px;text-align:left}.top-search span{flex:1 1}.top-search:hover{border-color:#c9cfdb;background:white}kbd{font:600 11px/1 var(--font-body);padding:4px 6px;border-radius:6px;border:1px solid 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a.stat:hover{border-color:#c9d4ee;box-shadow:var(--shadow-md);transform:translateY(-1px)}.app-main .stat strong{font-size:26px;letter-spacing:-.02em;margin:2px 0}.app-main .stat>svg{width:34px;height:34px;padding:8px;border-radius:10px;background:var(--blue-pale);color:var(--blue)}.app-main .stat.alert>svg{background:var(--pale);color:var(--orange-deep)}.app-main .data-table{font-size:13.5px}.app-main .data-table th{background:#f8f9fc}.app-main .data-table tbody tr:hover td{background:#fafbfd}.app-main .content-row{padding:14px 4px}.app-main .ws-layout{gap:24px}.app-main .ws-side{top:calc(var(--top-h) + 20px)}.app-main .notice{border-radius:12px}.app-main .account-tabs{margin-bottom:20px}.app-main .text-content{max-width:860px}.app-main .container{width:100%;max-width:none}.app-main .page-shell{padding:0;margin:0}.app-main .lesson-card{border-radius:var(--radius);box-shadow:var(--shadow-sm);border-color:var(--card-border);background:white}@media 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(max-width:900px){.auth-split{grid-template-columns:1fr}.auth-split-art{display:none}}.area-title{display:flex;align-items:center;gap:8px;font-size:17px!important;margin-bottom:10px;color:#3a4354}.job-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:14px}.job-card{display:flex;flex-direction:column}.job-card h3{font-size:16px}.job-facts{display:grid;gap:6px;margin:0 0 14px;font-size:13px}.job-facts div{display:grid;grid-template-columns:110px 1fr;gap:8px}.job-facts dt{color:var(--muted-2);font-weight:600}.job-facts dd{margin:0}.job-controls{margin-top:auto;display:grid;gap:8px}@media (max-width:900px){.job-grid{grid-template-columns:1fr}}.tab-list{display:flex;gap:4px;padding:4px;margin-bottom:16px;border-radius:12px;background:#eceff5;width:fit-content;max-width:100%;overflow-x:auto}.tab-list button{display:inline-flex;align-items:center;gap:8px;padding:8px 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