:root{--ink:#172236;--muted:#637087;--line:#d9e2ef;--blue:#245ee5;--blue2:#0b3da9;--cyan:#10a9c1;--green:#16815b;--red:#bd3c4e;--gold:#d68c00;--violet:#7256d8;--paper:#fff;--soft:#f4f7fb}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 6% 0,#dae9ff,transparent 30rem),radial-gradient(circle at 96% 18%,#e7ddff,transparent 27rem),#f3f6fa;color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}button,input,select{font:inherit}.mc{width:min(1220px,calc(100% - 28px));margin:auto;padding:22px 0 70px}.mc-toplink{display:inline-flex;gap:7px;align-items:center;color:#526176;text-decoration:none;font-size:.82rem;font-weight:700}.mc-toplink:hover{color:var(--blue)}.mc-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:32px;align-items:center;padding:42px 0 28px}.mc-kicker{margin:0 0 8px;color:var(--blue);font-size:.76rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.mc-hero h1{max-width:820px;margin:0;font-size:clamp(2.65rem,7vw,5.6rem);line-height:.94;letter-spacing:-.065em}.mc-hero h1 span{color:var(--blue)}.mc-hero p{max-width:720px;margin:18px 0 0;color:var(--muted);font-size:1.08rem;line-height:1.65}.mc-hero-wave{padding:18px;border:1px solid #cbd9ee;border-radius:24px;background:#ffffffc9;box-shadow:0 20px 60px #17223616}.mc-hero-wave svg{display:block;width:100%;height:auto}.mc-hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.mc-hero-facts span{padding:9px;border-radius:10px;background:#eef4ff;color:#365078;text-align:center;font-size:.72rem;font-weight:800}.mc-path{position:sticky;top:8px;z-index:20;display:flex;gap:6px;overflow-x:auto;margin:0 0 22px;padding:7px;border:1px solid var(--line);border-radius:15px;background:#ffffffee;box-shadow:0 10px 30px #17223612;backdrop-filter:blur(12px);scrollbar-width:none}.mc-path::-webkit-scrollbar{display:none}.mc-path a{flex:0 0 auto;padding:8px 11px;border-radius:9px;color:#536178;text-decoration:none;font-size:.76rem;font-weight:750}.mc-path a:hover,.mc-path a.active{background:#e8f0ff;color:var(--blue2)}.mc-section{scroll-margin-top:80px;margin:18px 0;padding:clamp(20px,4vw,38px);border:1px solid var(--line);border-radius:24px;background:#fffffff2;box-shadow:0 14px 48px #17223611}.mc-section-head{display:grid;grid-template-columns:52px minmax(0,1fr);gap:15px;align-items:start;margin-bottom:24px}.mc-num{display:grid;width:52px;height:52px;place-items:center;border-radius:15px;background:var(--blue);color:#fff;font-size:1.25rem;font-weight:900;box-shadow:0 7px 0 #c8d8ff}.mc-section h2{margin:0;font-size:clamp(1.55rem,4vw,2.45rem);letter-spacing:-.04em}.mc-section-head p{max-width:830px;margin:7px 0 0;color:var(--muted);line-height:1.55}.mc-grid{display:grid;grid-template-columns:minmax(250px,.75fr) minmax(0,1.25fr);gap:20px;align-items:start}.mc-panel{padding:17px;border:1px solid var(--line);border-radius:16px;background:#f9fbfe}.mc-panel h3{margin:0 0 12px;font-size:1rem}.mc-control{margin:13px 0}.mc-control label,.mc-label{display:flex;justify-content:space-between;gap:12px;margin-bottom:7px;color:#42516a;font-size:.8rem;font-weight:800}.mc-control input[type=range]{width:100%;accent-color:var(--blue)}.mc-control select,.mc-control input[type=number],.mc-control input[type=text]{width:100%;min-height:42px;padding:8px 10px;border:1px solid #b9c7da;border-radius:9px;background:#fff;color:var(--ink)}.mc-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.mc-btn{min-height:42px;padding:9px 14px;border:1px solid var(--blue);border-radius:10px;background:var(--blue);color:#fff;cursor:pointer;font-weight:800}.mc-btn:hover{background:var(--blue2)}.mc-btn.alt{background:#fff;color:var(--blue)}.mc-btn.soft{border-color:#d4deec;background:#edf2f8;color:#34445d}.mc-btn:disabled{cursor:not-allowed;opacity:.48}.mc-canvas-wrap{position:relative;overflow:hidden;border:1px solid #c9d5e5;border-radius:15px;background:#101a2c;box-shadow:inset 0 0 35px #0004}.mc-canvas-wrap canvas{display:block;width:100%;height:300px}.mc-canvas-caption{display:flex;flex-wrap:wrap;gap:14px;padding:9px 12px;background:#172236;color:#c9d6eb;font-size:.73rem}.mc-dot{display:inline-block;width:9px;height:9px;margin-right:5px;border-radius:50%;background:#53d6e9}.mc-dot.gold{background:#ffc857}.mc-dot.purple{background:#9d86f3}.mc-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:9px;margin-top:13px}.mc-metric{padding:13px;border-radius:12px;background:#eef3f9}.mc-metric span,.mc-metric strong{display:block}.mc-metric span{color:var(--muted);font-size:.72rem}.mc-metric strong{margin-top:4px;font-size:1.2rem}.mc-info{margin:15px 0 0;padding:13px 15px;border-left:4px solid var(--blue);border-radius:8px;background:#edf4ff;color:#314663;font-size:.88rem;line-height:1.55}.mc-info.warn{border-color:var(--gold);background:#fff7dc;color:#725611}.mc-info.good{border-color:var(--green);background:#ebf9f3;color:#126344}.mc-recording{display:none;margin-top:12px;width:100%}.mc-recording.show{display:block}.mc-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:15px 0}.mc-step{padding:13px;border-radius:12px;background:#eef3f9;text-align:center}.mc-step b,.mc-step span{display:block}.mc-step b{font:700 1.15rem/1.4 ui-monospace,monospace;color:var(--blue2)}.mc-step span{color:var(--muted);font-size:.7rem}.mc-bitbox{padding:20px;border-radius:15px;background:#172236;color:#c7f2ff;text-align:center;font:800 clamp(1.25rem,4vw,2.1rem)/1.5 ui-monospace,monospace;letter-spacing:.1em;overflow-wrap:anywhere}.mc-check{display:flex;gap:8px;margin-top:12px}.mc-check input{flex:1;min-width:0;padding:10px;border:1px solid #b9c7da;border-radius:9px;font:800 1rem ui-monospace,monospace;letter-spacing:.08em}.mc-feedback{min-height:24px;margin:10px 0 0;font-size:.85rem;font-weight:800}.mc-feedback.good{color:var(--green)}.mc-feedback.bad{color:var(--red)}.mc-formula{overflow-x:auto;margin-top:15px;padding:18px;border-radius:14px;background:#172236;color:#d8e8ff;text-align:center;font:700 clamp(.82rem,2vw,1.05rem)/1.7 ui-monospace,monospace}.mc-formula strong{color:#66d9ef}.mc-bars{display:grid;gap:13px}.mc-bar-head{display:flex;justify-content:space-between;gap:8px;margin-bottom:5px;font-size:.8rem;font-weight:800}.mc-track{height:15px;overflow:hidden;border-radius:999px;background:#e4eaf2}.mc-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .25s}.mc-fill.lossy{background:linear-gradient(90deg,var(--violet),#b988e8)}.mc-small{color:var(--muted);font-size:.76rem;line-height:1.5}.mc-challenge{border-color:#b8c9ec;background:radial-gradient(circle at 100% 0,#e9e2ff,transparent 28rem),#fff}.mc-challenge-shell{max-width:850px;margin:auto}.mc-challenge-top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px}.mc-progress{display:flex;gap:5px}.mc-progress i{width:34px;height:7px;border-radius:99px;background:#dce4f0}.mc-progress i.done{background:var(--green)}.mc-progress i.current{background:var(--blue)}.mc-timer{padding:8px 11px;border-radius:10px;background:#172236;color:#fff;font:800 .9rem ui-monospace,monospace}.mc-question{padding:clamp(18px,4vw,30px);border:1px solid var(--line);border-radius:18px;background:#fff}.mc-question h3{margin:0 0 17px;font-size:clamp(1.15rem,3vw,1.55rem);line-height:1.35}.mc-options{display:grid;grid-template-columns:1fr 1fr;gap:9px}.mc-option{padding:13px;border:1px solid #bdcadd;border-radius:11px;background:#f9fbfe;color:var(--ink);cursor:pointer;text-align:left;font-weight:750}.mc-option:hover{border-color:var(--blue);background:#edf4ff}.mc-option.wrong{border-color:#e2a2ac;background:#fff0f2;color:#98293a}.mc-option.correct{border-color:#8cd1b5;background:#eaf9f2;color:#116342}.mc-result{text-align:center;padding:26px}.mc-result-icon{font-size:4rem}.mc-result h3{margin:8px 0;font-size:2rem}.mc-result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:20px 0}.mc-result-stats div{padding:13px;border-radius:12px;background:#eef3f9}.mc-result-stats strong,.mc-result-stats span{display:block}.mc-result-stats strong{font-size:1.25rem}.mc-result-stats span{color:var(--muted);font-size:.72rem}.mc-footer{padding:24px 5px;color:var(--muted);text-align:center;font-size:.78rem}.mc-nosend{display:inline-flex;align-items:center;gap:7px;margin-top:10px;padding:6px 9px;border-radius:999px;background:#eaf9f2;color:#166547;font-size:.7rem;font-weight:800}
@media(max-width:850px){.mc-hero{grid-template-columns:1fr}.mc-hero-wave{display:none}.mc-grid{grid-template-columns:1fr}.mc-canvas-wrap canvas{height:260px}.mc-section{border-radius:18px}.mc-options{grid-template-columns:1fr}}
@media(max-width:560px){.mc{width:min(100% - 18px,1220px);padding-top:13px}.mc-hero{padding-top:28px}.mc-section{padding:17px}.mc-section-head{grid-template-columns:42px 1fr}.mc-num{width:42px;height:42px}.mc-steps,.mc-result-stats{grid-template-columns:1fr}.mc-canvas-wrap canvas{height:230px}.mc-challenge-top{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:no-preference){.mc-btn,.mc-option,.mc-path a{transition:.16s ease}}