:root{--ink:#172022;--muted:#5d686b;--paper:#fbfaf6;--white:#fff;--line:#e5e0d7;--sage:#657d68;--sage-dark:#435f48;--clay:#b56f4a;--clay-dark:#914e2e;--mint:#eaf2e8;--sky:#e9f2f4;--gold:#f3d99a;--shadow:0 18px 48px #1720221a;--shadow-soft:0 10px 28px #17202214;--shadow-hover:0 18px 42px #17202221;--focus-ring:0 0 0 3px #b56f4a47}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.page-shell{min-height:100vh;overflow-x:hidden}.page-shell:has(.interactive-worksheet){overflow-x:clip}.container{width:min(1120px,100% - 40px);margin:0 auto}.site-header{z-index:10;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fbfaf6eb;border-bottom:1px solid #e5e0d7c2;position:sticky;top:0;box-shadow:0 6px 22px 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var(--line);background:var(--white);box-shadow:var(--shadow);border-radius:8px;padding:clamp(28px,5vw,56px)}.policy-card h2{margin:34px 0 12px;font-size:clamp(1.3rem,2vw,1.7rem)}.policy-card h2:first-child{margin-top:0}.policy-card p,.policy-card li{color:var(--muted);line-height:1.72}.policy-card ul{gap:8px;margin:10px 0 0;padding-left:22px;display:grid}.policy-actions{margin-top:34px}.login-card{max-width:760px}.login-placeholder-form{box-shadow:none;margin-top:28px}.login-status-panel{background:var(--paper);border:1px solid #b56f4a52;border-radius:8px;margin-top:24px;padding:18px}.login-status-panel p{color:var(--clay-dark);margin:0;font-weight:800}.login-status-panel p+p{margin-top:10px}.login-status-panel a{color:var(--clay-dark);text-underline-offset:3px;text-decoration:underline}.login-placeholder-form input:disabled{cursor:not-allowed;opacity:.76}.member-hero{padding:76px 0 48px}.library-hero-grid{grid-template-columns:minmax(0,1fr) 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