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a:hover{background:var(--raised);color:var(--ink)}.tree-lessons a.done{color:var(--moss)}.tree-lesson-t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}@media (max-width: 560px){.syl-pill span{display:none}.syl-pill{padding:5px}.tree-unit-h{gap:12px}.tree-lessons{padding-left:44px}}.auth{display:flex;justify-content:center;padding:56px 16px 72px}.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:30px 26px;box-shadow:0 26px 60px -34px #000000bf}.auth-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}.auth-dot{width:8px;height:8px;border-radius:2px;background:var(--brass);box-shadow:0 0 0 3px var(--brass-glow)}.auth-kicker{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--sub)}.auth-title{font-size:clamp(1.6rem,4vw,2rem)}.auth-sub{color:var(--dim);margin-top:8px;font-size:14px;line-height:1.5}.auth-google{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;margin-top:22px;padding:12px 16px;background:#fff;color:#1f2328;border:0;border-radius:8px;font-family:var(--f-body);font-weight:600;font-size:14px;cursor:pointer;transition:background .14s}.auth-google:hover:not(:disabled){background:#f0f0f0}.auth-google:disabled{opacity:.5;cursor:not-allowed}.auth-or{display:flex;align-items:center;gap:12px;margin:20px 0 16px;color:var(--sub);font-family:var(--f-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase}.auth-or:before,.auth-or:after{content:"";flex:1;height:1px;background:var(--line)}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--bg);border:1px solid var(--line);border-radius:9px}.auth-tabs button{padding:9px;border:0;background:transparent;border-radius:6px;color:var(--dim);font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;cursor:pointer}.auth-tabs button.on{background:var(--raised);color:var(--ink)}.auth-form{display:grid;gap:14px;margin-top:16px}.auth-input{display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--bg);border:1px solid var(--line-strong);border-radius:8px;color:var(--sub);transition:border-color .12s,box-shadow .12s}.auth-input:focus-within{border-color:var(--brass);box-shadow:0 0 0 3px var(--brass-glow);color:var(--brass)}.auth-input input{flex:1;min-width:0;padding:12px 0;background:transparent;border:0;outline:none;color:var(--ink);font-family:var(--f-body);font-size:16px}.auth-input input::placeholder{color:var(--sub)}.auth-submit{justify-content:center;width:100%;padding:13px;font-size:12px}.auth-switch{margin-top:18px;text-align:center;font-size:13px;color:var(--sub)}.auth-switch button{background:none;border:0;color:var(--brass);cursor:pointer;font:inherit}.paywall{max-width:60ch;padding:20px 0 40px}.paywall-lock{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;background:var(--brass-glow);color:var(--brass);margin-bottom:16px}.paywall h1{font-size:clamp(1.5rem,3.6vw,2rem);margin-top:4px}.paywall p{color:var(--dim);margin-top:12px;max-width:56ch}.paywall-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}.skeleton{background:linear-gradient(90deg,var(--surface),var(--raised),var(--surface));background-size:200% 100%;animation:sk 1.4s linear infinite;border-radius:3px}@keyframes sk{0%{background-position:200% 0}to{background-position:-200% 0}}