:root{--bg: #f8f5ef;--bg-soft: #f2eadf;--panel: #ffffff;--panel-muted: #fffaf2;--panel-border: #e7dccb;--text: #18212b;--muted: #667085;--brand: #f97316;--brand-deep: #d95d08;--brand-soft: #fff1e7;--success: #177245;--danger: #c2410c;--shadow: 0 18px 44px rgba(94, 72, 45, .08)}*{box-sizing:border-box}body{margin:0;color:var(--text);font-family:Georgia,Times New Roman,serif;background:radial-gradient(circle at top,rgba(249,115,22,.1),transparent 24%),linear-gradient(180deg,#fcfaf6,#f8f5ef 52%,#f2eadf);min-height:100vh}a{color:inherit;text-decoration:none}main{width:min(1160px,calc(100% - 32px));margin:0 auto;padding:20px 0 56px}.site-nav{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:12px 0 28px}.site-nav nav{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.brand-lockup{display:inline-flex;align-items:center;gap:14px;color:var(--brand)}.brand-copy{display:grid;gap:2px}.brand-copy strong{color:var(--text);font-size:1.3rem;line-height:1}.brand-copy span{color:var(--muted);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase}.nav-link,.button-link,.auth-button,.workspace-tab,.auth-tab{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--panel-border);background:#ffffffe0;padding:10px 14px;border-radius:999px;color:var(--text);font:inherit;cursor:pointer;transition:all .18s ease}.nav-link:hover,.button-link:hover,.auth-button:hover,.workspace-tab:hover,.auth-tab:hover{border-color:#f9731659;background:var(--brand-soft);transform:translateY(-1px)}.button-link.primary,.auth-button.primary,.workspace-tab.active,.auth-tab.active{background:linear-gradient(135deg,var(--brand),#fb923c);border-color:transparent;color:#fff}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;margin-bottom:34px}.panel{background:#ffffffe6;border:1px solid var(--panel-border);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.hero h1,.hero-panel h1,.auth-panel h1{margin:0 0 16px;color:var(--text);font-size:clamp(2.3rem,5vw,4.25rem);line-height:.95}.eyebrow{margin:0 0 10px;color:var(--brand-deep);font-size:.78rem;text-transform:uppercase;letter-spacing:.14em}.lede,.panel p,.auth-panel p,label span,.page-copy{color:var(--muted);line-height:1.65}.cta-row,.auth-tabs,.auth-links-row,.workspace-tabs{display:flex;flex-wrap:wrap;gap:10px}.cta-row{margin-top:20px}.stat-grid,.course-grid,.dashboard-grid,.metric-rail,.info-grid,.dashboard-grid-wide,.form-grid-two{display:grid;gap:18px}.stat-grid,.form-grid-two,.info-grid,.dashboard-grid-wide{grid-template-columns:repeat(2,minmax(0,1fr))}.course-grid,.dashboard-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.metric-rail{grid-template-columns:repeat(4,minmax(0,1fr))}.stat-card,.metric-card,.selector-card,.list-card,.question-card{padding:16px;border-radius:20px;background:var(--panel);border:1px solid var(--panel-border)}.stat-card strong,.metric-card strong,.section-heading h2,.class-card h3,.course-card h3,.list-card strong,.question-card strong{color:var(--text)}.chip-list,.mini-list,.class-selector-list,.list-stack,.option-stack,.stack,.dashboard-shell,.auth-panel,.auth-form,.question-builder,.quiz-sheet,.course-card,.class-card{display:grid;gap:12px}.chip-list,.mini-list{padding:0;margin:0;list-style:none;display:flex;flex-wrap:wrap;gap:10px}.chip-list li,.mini-list li,.role-badge{display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:var(--brand-soft);border:1px solid rgba(249,115,22,.14);font-size:.92rem}.hero-topline,.class-header,.toolbar-panel,.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.section-heading{align-items:end;margin:38px 0 16px}.auth-wrap{display:flex;justify-content:center}.auth-panel{width:min(620px,100%)}.auth-form label{display:grid;gap:8px}.auth-form input,.auth-form select,textarea{width:100%;padding:14px 16px;border-radius:16px;border:1px solid var(--panel-border);background:#fff;color:var(--text);font:inherit}textarea{resize:vertical}.auth-divider{position:relative;text-align:center;margin:6px 0}.auth-divider:before{content:"";position:absolute;inset:50% 0 auto;border-top:1px solid var(--panel-border)}.auth-divider span{position:relative;padding:0 12px;background:var(--panel);color:var(--muted)}.auth-message{margin:0;padding:12px 14px;border-radius:16px}.auth-message.error{background:#c2410c14;color:var(--danger)}.auth-message.success{background:#1772451a;color:var(--success)}.selector-card.active,.review-card{background:var(--brand-soft);border-color:#f973163d}.empty-state{color:var(--muted);font-style:italic}.option-row{display:flex;align-items:flex-start;gap:10px}footer{padding-top:24px;color:var(--muted)}@media(max-width:900px){.hero,.course-grid,.dashboard-grid,.metric-rail,.info-grid,.dashboard-grid-wide,.form-grid-two,.stat-grid{grid-template-columns:1fr}.site-nav,.hero-topline,.toolbar-panel,.section-heading,.class-header{flex-direction:column;align-items:flex-start}}