*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0d0d12;--bg2:#13131c;--bg3:#1a1a28;--border:#2a2a3e;--text:#e8e8f0;--muted:#7070a0;--font:"Inter",-apple-system,BlinkMacSystemFont,sans-serif;--red:#ef4444;--blue:#3b82f6;--green:#22c55e;--amber:#f59e0b}body,html{height:100%;font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}.nav{display:flex;align-items:center;justify-content:center;padding:10px 16px;background:var(--bg2);border-bottom:1px solid var(--border);gap:16px}.nav a{color:var(--muted);text-decoration:none;font-size:13px;font-weight:500;transition:color .2s}.nav .brand,.nav a:hover{color:var(--text)}.nav .brand{font-weight:700;font-size:15px;letter-spacing:-.02em}.nav-links{gap:10px}.container,.nav-links{display:flex;align-items:center}.container{flex-direction:column;padding:16px;min-height:calc(100vh - 45px)}.title{font-size:22px;font-weight:700;letter-spacing:-.03em;margin-bottom:2px}.subtitle{font-size:13px;color:var(--muted);margin-bottom:16px}.move-counter{font-size:14px;color:var(--muted);margin-bottom:12px;font-weight:500}.move-counter span{color:var(--text);font-weight:700}.tubes-container{display:flex;gap:12px;justify-content:center;align-items:flex-end;flex-wrap:wrap;margin-bottom:24px;padding:0 8px}.tube-wrapper{display:flex;flex-direction:column;align-items:center;cursor:pointer;transition:transform .2s ease,filter .2s ease;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;-moz-user-select:none;user-select:none}.tube-wrapper:active{transform:scale(.96)}.tube-wrapper.selected{transform:translateY(-8px);filter:drop-shadow(0 0 12px rgba(99,102,241,.5))}.tube-wrapper.shake{animation:shake .3s ease}.tube{width:50px;height:200px;border-radius:0 0 25px 25px;border:2px solid var(--border);border-top:none;background:rgba(255,255,255,.03);display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;position:relative}.tube-top{width:56px;height:4px;background:var(--border);border-radius:4px 4px 0 0;margin-bottom:-1px}.liquid-segment{width:100%;flex-shrink:0;transition:all .3s ease}.liquid-segment:first-child{border-radius:0 0 23px 23px}.btn-row{display:flex;gap:10px;margin-bottom:16px}.btn{padding:10px 20px;border:1px solid var(--border);border-radius:8px;background:var(--bg2);color:var(--text);font-family:var(--font);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,border-color .2s;-webkit-tap-highlight-color:transparent}.btn:hover{background:var(--bg3);border-color:var(--muted)}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);border-color:transparent;color:#fff}.btn-primary:hover{background:linear-gradient(135deg,#5558e8,#7c4fef)}.win-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .3s ease}.win-card{background:var(--bg2);border:1px solid var(--border);border-radius:16px;padding:32px 28px;max-width:340px;width:90%;text-align:center}.win-card h2{font-size:24px;font-weight:700;margin-bottom:8px}.win-card .score-label{font-size:13px;color:var(--muted);margin-bottom:4px}.win-card .score-value{font-size:36px;font-weight:700;background:linear-gradient(135deg,#6366f1,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:16px}.win-card .stat-row{display:flex;justify-content:center;gap:20px;margin-bottom:20px}.win-card .stat{text-align:center}.win-card .stat-num{font-size:20px;font-weight:700}.win-card .stat-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.share-text{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px;font-family:monospace;font-size:13px;white-space:pre;text-align:left;margin-bottom:16px;line-height:1.5}.countdown{font-size:12px;color:var(--muted);margin-top:8px}.countdown span{color:var(--text);font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:200;animation:fadeIn .3s ease}.modal{background:var(--bg2);border:1px solid var(--border);border-radius:16px;padding:28px 24px;max-width:380px;width:90%;max-height:80vh;overflow-y:auto}.modal h2{font-size:20px;font-weight:700;margin-bottom:16px}.modal p{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:12px}.modal strong{color:var(--text)}.modal .close-btn{display:block;margin:16px auto 0;padding:10px 28px}.stats-bar{display:flex;gap:20px;justify-content:center;margin-top:8px;margin-bottom:16px}.stats-bar .stat{text-align:center}.stats-bar .stat-num{font-size:18px;font-weight:700}.stats-bar .stat-label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.difficulty-selector{display:flex;gap:6px;margin-bottom:14px}.difficulty-pill{padding:6px 16px;border:1px solid var(--border);border-radius:20px;background:var(--bg2);color:var(--muted);font-family:var(--font);font-size:13px;font-weight:600;cursor:pointer;transition:all .2s ease;-webkit-tap-highlight-color:transparent}.difficulty-pill:hover{border-color:var(--muted);color:var(--text)}.difficulty-pill.active{background:linear-gradient(135deg,#6366f1,#8b5cf6);border-color:transparent;color:#fff}.best-score{color:var(--muted);font-weight:500}.best-score span{color:#a855f7;font-weight:700}.difficulty-badge{display:inline-block;padding:3px 14px;border-radius:12px;background:var(--bg3);border:1px solid var(--border);font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}.cross-promo{display:flex;align-items:center;gap:8px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.cross-promo-label{font-size:11px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-right:4px}.cross-promo-link{font-size:13px;color:#8b5cf6;text-decoration:none;font-weight:600;transition:color .2s}.cross-promo-link:hover{color:#a78bfa}.cross-promo-dot{color:var(--border);font-size:13px}@keyframes confetti-fall{0%{transform:translateY(0) rotate(0deg);opacity:1}to{transform:translateY(100vh) rotate(2turn);opacity:0}}.copied-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:10px 20px;border-radius:8px;font-size:13px;font-weight:600;z-index:300;animation:fadeIn .2s ease,fadeOut .3s ease 1.5s forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes shake{0%,to{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}