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practiceSlideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.practice__answer-header{display:flex;align-items:center;gap:var(--space-sm);font-size:.875rem;font-weight:600;color:var(--accent-cyan);margin-bottom:var(--space-md)}.practice__answer-text{font-size:1rem;line-height:1.75;color:var(--text-secondary);margin:0}.practice__nav{display:flex;align-items:center;justify-content:space-between;gap:var(--space-lg);padding-top:var(--space-2xl);margin-top:auto;border-top:1px solid var(--border-subtle)}.practice__nav-btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9375rem;font-weight:500;font-family:inherit;cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.practice__nav-btn:hover:not(:disabled){border-color:var(--accent-cyan);color:var(--accent-cyan)}.practice__nav-btn:disabled{opacity:.4;cursor:not-allowed}.practice__nav-btn:focus-visible{outline:2px solid var(--accent-cyan);outline-offset:2px}.practice__nav-dots{display:flex;gap:var(--space-sm);flex-wrap:wrap;justify-content:center}.practice__nav-dot{width:10px;height:10px;border-radius:50%;background:var(--bg-tertiary);border:1px solid var(--border-subtle);cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.practice__nav-dot:hover{background:var(--text-muted)}.practice__nav-dot--active{background:var(--accent-cyan);border-color:var(--accent-cyan);transform:scale(1.2)}@media(max-width:640px){.practice{padding:var(--space-lg)}.practice__question{font-size:1.2rem}.practice__rate-wrap{flex-direction:column;align-items:flex-start}.practice__rate-done{margin-left:0}.practice__nav{flex-wrap:wrap}.practice__nav-dots{order:3;width:100%;padding-top:var(--space-md)}}.profile{max-width:480px;margin:0 auto;padding:var(--space-2xl) var(--space-xl)}.profile__card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);overflow:hidden;position:relative;transition:border-color var(--duration-fast) var(--ease-out)}.profile__card:hover{border-color:var(--border-accent)}.profile__cover{height:100px;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-blue));opacity:.9}.profile__avatar-wrap{position:relative;margin-top:-48px;padding:0 var(--space-xl)}.profile__avatar{width:96px;height:96px;border-radius:50%;border:4px solid var(--bg-secondary);-o-object-fit:cover;object-fit:cover}.profile__avatar-placeholder{width:96px;height:96px;border-radius:50%;border:4px solid var(--bg-secondary);background:linear-gradient(135deg,var(--accent-cyan),var(--accent-blue));display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;color:#fff}.profile__info{padding:var(--space-xl);padding-top:var(--space-md)}.profile__name{font-size:1.5rem;font-weight:700;margin-bottom:var(--space-xs);color:var(--text-primary)}.profile__email{font-size:.9375rem;color:var(--text-muted)}.profile__stats{display:flex;align-items:center;justify-content:center;gap:var(--space-xl);padding:var(--space-xl);border-top:1px solid var(--border-subtle)}.profile__stat{display:flex;flex-direction:column;align-items:center}.profile__stat-num{font-size:1.5rem;font-weight:700;color:var(--accent-cyan);font-family:var(--font-mono)}.profile__stat-label{font-size:.8125rem;color:var(--text-muted)}.profile__stat-divider{width:1px;height:32px;background:var(--border-subtle)}.profile__signout{flex:1;margin:0 var(--space-xl) var(--space-xl);display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-secondary);font-size:.9375rem;font-family:inherit;cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.profile__signout:hover{border-color:#ef444480;color:#f87171}.auth-modal-overlay{position:fixed;inset:0;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-xl);animation:authFadeIn .2s var(--ease-out)}@keyframes authFadeIn{0%{opacity:0}to{opacity:1}}.auth-modal{position:relative;width:100%;max-width:420px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:var(--space-2xl);box-shadow:var(--shadow-lg);animation:authSlideUp .3s var(--ease-out)}@keyframes authSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.auth-modal__close{position:absolute;top:var(--space-lg);right:var(--space-lg);width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.auth-modal__close:hover{color:var(--text-primary);border-color:var(--border-accent)}.auth-modal__content{text-align:center}.auth-modal__icon{width:64px;height:64px;margin:0 auto var(--space-xl);display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-blue));border-radius:var(--radius-lg);font-size:1.75rem;color:#fff}.auth-modal__title{font-size:1.5rem;font-weight:700;margin-bottom:var(--space-sm);color:var(--text-primary)}.auth-modal__desc{font-size:.9375rem;color:var(--text-secondary);line-height:1.6;margin-bottom:var(--space-xl)}.auth-modal__google{width:100%;display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-md) var(--space-xl);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.auth-modal__google-logo{display:flex;align-items:center;justify-content:center;flex-shrink:0}.auth-modal__google-logo svg{display:block;width:24px;height:24px}.auth-modal__google-text{white-space:nowrap}.auth-modal__google:hover:not(:disabled){border-color:var(--border-accent);background:var(--bg-card-hover)}.auth-modal__google:disabled{opacity:.7;cursor:wait}.auth-modal__spinner{width:20px;height:20px;border:2px solid var(--border-subtle);border-top-color:var(--accent-cyan);border-radius:50%;animation:authSpin .8s linear infinite}@keyframes authSpin{to{transform:rotate(360deg)}}.auth-modal__notice{padding:var(--space-md);background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:#fca5a5;font-size:.875rem;margin-bottom:var(--space-md)}.auth-modal__footer{margin-top:var(--space-xl);font-size:.8125rem;color:var(--text-muted)}.start-modal-overlay{position:fixed;inset:0;background:#00000080;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;z-index:9999;padding:24px;animation:smo .2s ease-out}@keyframes smo{0%{opacity:0}to{opacity:1}}.start-modal{position:relative;width:100%;max-width:440px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:14px;box-shadow:0 20px 56px -16px #00000040;animation:smi .25s ease-out both}@keyframes smi{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.start-modal__head{display:flex;align-items:center;justify-content:space-between;padding:24px 24px 0;gap:16px}.start-modal__title{font-size:1.375rem;font-weight:600;color:var(--text-primary);margin:0;letter-spacing:-.02em}.start-modal__close{width:40px;height:40px;display:flex;align-items:center;justify-content:center;margin:-8px -8px 0 0;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-secondary);cursor:pointer;transition:color .15s,border-color .15s,background .15s}.start-modal__close:hover{color:var(--text-primary);border-color:var(--border-accent);background:var(--bg-card-hover)}.start-modal__form{padding:20px 24px 24px}.start-modal__desc{font-size:.9375rem;color:var(--text-secondary);margin:0 0 20px;line-height:1.5}.start-modal__row{margin-bottom:18px}.start-modal__row:last-of-type{margin-bottom:22px}.start-modal__label{display:block;font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}.start-modal__opts{display:flex;gap:8px;flex-wrap:wrap}.start-modal__opt{padding:10px 18px;font-size:.9375rem;font-weight:500;font-family:inherit;color:var(--text-secondary);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:10px;cursor:pointer;transition:border-color .15s,color .15s,background .15s}.start-modal__opt:hover{color:var(--text-primary);border-color:var(--border-accent)}.start-modal__opt--on{color:#fff;background:var(--accent-cyan);border-color:var(--accent-cyan)}.start-modal__tech-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.start-modal__tech-toggle{margin-top:8px;padding:8px 0;font-size:.875rem;font-weight:500;font-family:inherit;color:var(--accent-cyan);background:none;border:none;cursor:pointer;transition:color .15s}.start-modal__tech-toggle:hover{color:var(--accent-blue)}.start-modal__tech{display:flex;align-items:center;gap:12px;padding:12px 14px;font-size:.9375rem;font-weight:500;font-family:inherit;color:var(--text-secondary);background:var(--bg-tertiary);border:1px solid transparent;border-radius:10px;cursor:pointer;transition:border-color .15s,color .15s,background .15s;text-align:left}.start-modal__tech:hover{color:var(--text-primary);border-color:var(--border-subtle)}.start-modal__tech--on{color:var(--text-primary);background:color-mix(in srgb,var(--t, var(--accent-cyan)) 10%,var(--bg-tertiary));border-color:color-mix(in srgb,var(--t, var(--accent-cyan)) 35%,transparent)}.start-modal__tech-dot{width:36px;height:36px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:700;color:var(--t, var(--accent-cyan));background:color-mix(in srgb,var(--t, var(--accent-cyan)) 18%,var(--bg-tertiary));border-radius:8px}.start-modal__tech--on .start-modal__tech-dot{background:var(--t, var(--accent-cyan));color:#fff}.start-modal__tech-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.start-modal__empty{font-size:.9375rem;color:var(--text-muted);padding:14px 0;margin:0;grid-column:1 / -1}.start-modal__err{font-size:.875rem;color:var(--accent-red, #dc2626);padding:10px 14px;margin-bottom:14px;background:color-mix(in srgb,var(--accent-red, #dc2626) 8%,transparent);border-radius:8px}.start-modal__btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:14px 20px;font-size:1rem;font-weight:600;font-family:inherit;color:#fff;background:var(--accent-cyan);border:none;border-radius:10px;cursor:pointer;transition:background .15s,opacity .15s}.start-modal__btn:hover:not(:disabled){background:var(--accent-blue)}.start-modal__btn:disabled{opacity:.7;cursor:not-allowed}.start-modal__spin{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:smspin .6s linear infinite}@keyframes smspin{to{transform:rotate(360deg)}}@media(max-width:480px){.start-modal-overlay{padding:16px}.start-modal__head{padding:20px 20px 0}.start-modal__form{padding:16px 20px 20px}.start-modal__title{font-size:1.25rem}}@media(max-width:360px){.start-modal__tech-grid{grid-template-columns:1fr}}