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env(safe-area-inset-bottom));transform:translateY(40px);transition:transform .32s cubic-bezier(.34,1.56,.64,1)}.new-topic-overlay.open .new-topic-modal{transform:translateY(0)}.type-it-panel{width:100%;max-width:420px;display:flex;flex-direction:column;gap:10px;margin-top:4px}.type-it-input{width:100%;padding:12px 16px;background:var(--surface);border:1px solid var(--border-2);border-radius:12px;color:var(--text);font-size:16px;font-family:inherit;outline:none;transition:border-color .15s}.type-it-input:focus{border-color:var(--accent)}.type-it-result{padding:12px 16px;border-radius:12px;font-size:14px;font-weight:500;text-align:center}.type-it-result.correct{background:#34c7591f;border:1px solid rgba(52,199,89,.3);color:#34c759}.type-it-result.incorrect{background:#ff453a1a;border:1px solid rgba(255,69,58,.25);color:#ff453a}.btn-next{padding:14px;background:var(--surface-2);border:1px solid var(--border-2);border-radius:14px;color:var(--text);font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:background .15s;width:100%}.btn-next:hover{background:#ffffff1f}.mode-toggle{display:flex;background:#00000040;border-radius:10px;border:1px solid var(--border);overflow:hidden;flex-shrink:0}.mode-btn{padding:5px 10px;background:none;border:none;color:var(--text-muted);font-size:12px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s;white-space:nowrap;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.mode-btn.active{background:var(--surface-2);color:var(--text)}.srs-actions{display:flex;gap:8px;width:100%;flex-wrap:wrap}.btn-srs{flex:1;min-width:calc(50% - 4px);display:flex;align-items:center;justify-content:center;padding:13px 8px;border-radius:var(--radius-sm);border:1px solid;font-size:14px;font-weight:500;cursor:pointer;transition:transform 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var(--border);padding:3px;flex-shrink:0}.admin-tab{flex:1;padding:7px 12px;background:none;border:none;border-radius:8px;color:var(--text-muted);font-size:13px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;gap:6px}.admin-tab.active{background:var(--surface-2);color:var(--text)}.admin-tab-count{background:#60a5fa33;color:#60a5fa;border-radius:10px;padding:1px 6px;font-size:11px;font-weight:600}.waitlist-list{display:flex;flex-direction:column;gap:8px;max-height:50vh;overflow-y:auto}.waitlist-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px}.waitlist-email{font-size:14px;color:var(--text)}.waitlist-date{font-size:12px;color:var(--text-muted);flex-shrink:0}main.browse-main{justify-content:flex-start;gap:0;overflow:hidden;padding-bottom:0}.browse-wrap{display:flex;flex-direction:column;width:100%;flex:1;min-height:0;overflow:hidden}.browse-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:15px;line-height:1.6;text-align:center;padding:0 24px}.browse-alpha-bar{display:flex;gap:5px;overflow-x:auto;padding:4px 0 12px;flex-shrink:0;scrollbar-width:none}.browse-alpha-bar::-webkit-scrollbar{display:none}.browse-alpha-btn{flex-shrink:0;min-width:30px;height:30px;padding:0 6px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text-muted);font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:color .15s,border-color .15s,background .15s}.browse-alpha-btn:hover{color:var(--text);border-color:var(--border-2);background:var(--surface-2)}.browse-alpha-btn:active{background:var(--surface-2);transform:scale(.92)}.browse-scroll{flex:1;min-height:0;overflow-y:auto;width:100%;scrollbar-width:none;padding-bottom:calc(80px + env(safe-area-inset-bottom))}.browse-scroll::-webkit-scrollbar{display:none}.browse-section-label{font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--text-muted);text-transform:uppercase;padding:14px 0 6px;border-bottom:1px solid var(--border);margin-bottom:2px}.browse-item{padding:11px 2px;border-bottom:1px solid rgba(255,255,255,.05);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:background .1s}.browse-item:active{background:#ffffff08}.browse-item.open{background:#ffffff05;border-radius:8px;padding:11px 10px}.browse-item-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.browse-item-front{font-size:16px;font-weight:400;color:var(--text);line-height:1.4;flex:1}.browse-item-back{font-size:14px;color:var(--text-muted);margin-top:5px;line-height:1.4;padding-top:5px;border-top:1px solid var(--border)}.browse-play-btn{flex-shrink:0;padding:5px 10px;border-radius:8px;background:none;border:1px solid var(--border);color:var(--text-muted);font-size:11px;font-family:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:color .15s,border-color .15s,background .15s;line-height:1}.browse-play-btn:hover{color:var(--text);border-color:var(--border-2);background:var(--surface-2)}.ordered-bar{width:100%;display:flex;align-items:center;justify-content:space-between;padding:0 0 10px;flex-shrink:0}.ordered-bar-label{font-size:12px;color:var(--text-muted);font-weight:500}.ordered-bar-progress{font-size:12px;color:var(--text-dim);font-weight:600}.landing{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);color:var(--text);overflow-y:auto;z-index:10;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Helvetica Neue,system-ui,sans-serif}.landing.hidden{display:none}.landing-nav{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;position:sticky;top:0;z-index:20;background:#000c;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.landing-logo{font-size:18px;font-weight:700;letter-spacing:-.03em}.landing-login-btn{padding:8px 18px;border-radius:20px;border:1px solid var(--border-2);background:none;color:var(--text);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;transition:background .15s,border-color .15s}.landing-login-btn:hover{background:var(--surface-2);border-color:#ffffff4d}.landing-hero{display:flex;justify-content:center;align-items:center;min-height:calc(90vh - 60px);padding:60px 24px}.landing-hero-inner{max-width:600px;text-align:center}.landing-tag{display:inline-block;padding:5px 14px;border-radius:20px;border:1px solid var(--border-2);font-size:12px;font-weight:500;color:var(--text-dim);letter-spacing:.04em;text-transform:uppercase;margin-bottom:24px}.landing-title{font-size:clamp(36px,7vw,64px);font-weight:700;letter-spacing:-.04em;line-height:1.1;margin:0 0 20px}.landing-title-accent{background:linear-gradient(135deg,#fff 30%,#ffffff73);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.landing-subtitle{font-size:clamp(15px,2.5vw,18px);color:var(--text-dim);line-height:1.65;margin:0 0 36px}.landing-cta{display:inline-block;padding:15px 32px;border-radius:100px;background:#fff;color:#000;font-size:16px;font-weight:600;font-family:inherit;border:none;cursor:pointer;transition:transform .15s,opacity .15s;letter-spacing:-.01em}.landing-cta:hover{opacity:.9;transform:translateY(-1px)}.landing-cta:active{transform:scale(.97)}.landing-features{padding:0 24px 80px;max-width:900px;margin:0 auto}.landing-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}.landing-feature-card{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:16px;transition:border-color .2s}.landing-feature-card:hover{border-color:var(--border-2)}.landing-feature-icon{font-size:28px;margin-bottom:12px}.landing-feature-title{font-size:15px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}.landing-feature-desc{font-size:13px;color:var(--text-dim);line-height:1.6}.landing-waitlist{padding:60px 24px 80px;border-top:1px solid var(--border)}.landing-waitlist-inner{max-width:480px;margin:0 auto;text-align:center}.landing-waitlist-title{font-size:28px;font-weight:700;letter-spacing:-.03em;margin:0 0 12px}.landing-waitlist-subtitle{font-size:15px;color:var(--text-dim);line-height:1.6;margin:0 0 28px}.landing-waitlist-form{display:flex;gap:10px;flex-wrap:wrap}.landing-waitlist-input{flex:1;min-width:200px;padding:14px 16px;background:var(--surface);border:1px solid var(--border-2);border-radius:var(--radius);color:var(--text);font-size:15px;font-family:inherit;outline:none;transition:border-color .15s}.landing-waitlist-input:focus{border-color:#ffffff59}.landing-waitlist-input::placeholder{color:var(--text-muted)}.landing-waitlist-submit{padding:14px 22px;background:#fff;color:#000;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:opacity .15s,transform .12s;white-space:nowrap}.landing-waitlist-submit:hover{opacity:.9}.landing-waitlist-submit:active{transform:scale(.97)}.landing-waitlist-submit:disabled{opacity:.5;cursor:default}.landing-waitlist-success{padding:14px 20px;background:var(--green-bg);border:1px solid var(--green-border);border-radius:var(--radius);color:var(--green);font-size:14px;font-weight:500}.landing-waitlist-error{margin-top:10px;font-size:13px;color:var(--red)}.landing-footer{padding:24px;text-align:center;color:var(--text-muted);font-size:13px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:8px;align-items:center}.landing-footer-contacts{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}.landing-footer-contacts a{color:var(--text-muted);text-decoration:none;transition:color .15s}.landing-footer-contacts a:hover{color:var(--text)}@media (max-width:480px){.landing-nav{padding:14px 16px}.landing-hero{padding:40px 20px;min-height:calc(85vh - 56px)}.landing-features{padding:0 16px 60px}.landing-waitlist{padding:48px 16px 60px}.landing-waitlist-form{flex-direction:column}.landing-waitlist-submit{width:100%}}