:root{--bg:#0b1020;--bg2:#111833;--card:#151d3b;--fg:#e8ecff;--mut:#97a1c8;--line:#26305a;--acc:#7c8cff;--acc2:#38bdf8;--c1:#38bdf8;--c2:#fb923c;--c3:#4ade80;--c4:#f472b6;--sh:0 8px 30px rgba(0,0,0,.35);--r:16px}:root[data-theme=light]{--bg:#f5f7ff;--bg2:#eaeefc;--card:#fff;--fg:#141a3a;--mut:#5a648c;--line:#dbe1f5;--acc:#4f46e5;--acc2:#0284c7;--c1:#0284c7;--c2:#ea580c;--c3:#16a34a;--c4:#db2777;--sh:0 8px 24px rgba(40,50,120,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}h1,h2,h3{line-height:1.2;margin:0}.wrap{max-width:1180px;margin:0 auto;padding:0 20px}.view{flex:1}.fade{animation:fade .35s ease}@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.hdr-in{display:flex;align-items:center;gap:14px;height:62px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}.logo{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#6366f1,#22d3ee);color:#fff;font-family:serif;font-size:20px}.nav{display:flex;gap:2px;margin-left:8px}.nav a{padding:7px 12px;border-radius:10px;color:var(--mut);font-weight:600;font-size:14px}.nav a:hover,.nav a.on{color:var(--fg);background:var(--bg2)}.sbox{position:relative;margin-left:auto;width:min(320px,34vw)}.sbox input{width:100%;padding:9px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg2);color:var(--fg);font:inherit;font-size:14px;outline:none}.sbox input:focus{border-color:var(--acc);box-shadow:0 0 0 3px color-mix(in srgb,var(--acc) 25%,transparent)}.sdd{position:absolute;top:calc(100% + 8px);right:0;width:min(440px,92vw);background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh);overflow:hidden}.sdd a{display:flex;gap:10px;align-items:center;padding:9px 14px;font-size:14px}.sdd a:hover{background:var(--bg2)}.sdd b{font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sdd i{font-style:normal;color:var(--mut);font-size:12px}.sdd .all{justify-content:center;color:var(--acc);font-weight:600;border-top:1px solid var(--line)}.none{padding:14px;color:var(--mut)}.k{font-size:10px;text-transform:uppercase;letter-spacing:.06em;padding:2px 7px;border-radius:6px;background:var(--bg2);color:var(--mut);font-weight:700;min-width:46px;text-align:center}.k-topic{color:var(--c1)}.k-lab{color:var(--c3)}.k-faq{color:var(--c2)}.k-area{color:var(--c4)}.icon{border:1px solid var(--line);background:var(--bg2);color:var(--fg);width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:16px}.burger{display:none}.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 22px;border-radius:12px;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font:inherit;font-weight:700;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(99,102,241,.4)}.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--fg)}.btn.ghost:hover{box-shadow:none;border-color:var(--acc)}.btn.sm{padding:6px 14px;font-size:13px}.btn.ok{background:linear-gradient(135deg,#16a34a,#4ade80);color:#04210f}.btn:disabled{opacity:.4;cursor:default;transform:none}.sel,.inp{background:var(--bg2);color:var(--fg);border:1px solid var(--line);border-radius:10px;padding:8px 12px;font:inherit;font-size:14px;max-width:100%}.inp{width:100%;margin:6px 0 14px}.inp.big{font-size:18px;padding:12px 16px}.hero{position:relative;height:min(560px,78vh);min-height:420px;overflow:hidden;background:radial-gradient(1200px 500px at 70% 30%,#1a2150,#0b1020)}.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .7s,visibility .7s;display:flex;align-items:center;color:#fff}.slide.on{opacity:1;visibility:visible}.slide::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 400px at 20% 50%,color-mix(in srgb,var(--sc) 22%,transparent),transparent)}.bgc{position:absolute;inset:0;width:100%;height:100%}.sl-in{position:relative;width:100%}.slide h1{font-size:clamp(30px,5.2vw,56px);max-width:700px;letter-spacing:-.02em;margin:14px 0}.slide h1 em{font-style:normal;background:linear-gradient(90deg,var(--sc),#fff);-webkit-background-clip:text;background-clip:text;color:transparent}.slide p{max-width:560px;font-size:18px;color:#c6cdf0;margin:0 0 26px}.tag{display:inline-block;padding:4px 14px;border-radius:99px;border:1px solid var(--sc);color:var(--sc);font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.slide .on .tag,.slide.on h1,.slide.on p,.slide.on .cta,.slide.on .tag{animation:rise .8s both}.slide.on p{animation-delay:.12s}.slide.on .cta{animation-delay:.24s}@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}.cta{display:flex;gap:12px;flex-wrap:wrap}.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.35)}.arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background:rgba(10,15,40,.4);color:#fff;font-size:26px;cursor:pointer;z-index:3;backdrop-filter:blur(6px)}.arrow:hover{background:rgba(255,255,255,.18)}.arrow.l{left:14px}.arrow.r{right:14px}.dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}.dot{width:10px;height:10px;border-radius:99px;border:0;background:rgba(255,255,255,.35);cursor:pointer;transition:width .3s,background .3s}.dot.on{width:30px;background:#fff}.prog{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.1);z-index:3}.prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,#6366f1,#22d3ee)}.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin:-40px 0 30px;position:relative;z-index:4}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;text-align:center;box-shadow:var(--sh)}.stat b{display:block;font-size:30px;background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}.stat span{color:var(--mut);font-size:13px}.resume{display:flex;gap:14px;align-items:center;padding:16px 22px;border-radius:var(--r);background:linear-gradient(135deg,color-mix(in srgb,var(--acc) 25%,var(--card)),var(--card));border:1px solid var(--line);margin-bottom:10px}.resume span{color:var(--mut);font-size:13px}.resume b{flex:1}.resume i{font-style:normal;font-size:20px}.sec{margin:46px 0 18px;font-size:26px}.sec.sm{font-size:20px;margin:34px 0 14px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}.card.flat{padding:14px}.card.center{text-align:center}a.card{display:block;transition:transform .2s,box-shadow .2s,border-color .2s;position:relative;overflow:hidden}a.card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--cc,var(--acc))}a.card::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:var(--cc,var(--acc))}.card h3{font-size:17px;margin:8px 0 6px}.card p{margin:0 0 12px;color:var(--mut);font-size:14px}.ico{font-size:28px}.ico.big{font-size:44px}.pill{display:inline-block;font-size:12px;padding:3px 10px;border-radius:99px;background:var(--bg2);color:var(--mut);font-weight:600}.meter{height:6px;border-radius:9px;background:var(--bg2);overflow:hidden;margin:4px 0 10px}.meter i{display:block;height:100%;background:var(--cc,var(--acc));border-radius:9px}.meter.wide{height:8px}.lvl .pill{background:color-mix(in srgb,var(--cc) 18%,transparent);color:var(--cc)}.more{margin:14px 0;color:var(--mut)}.more a{color:var(--acc);font-weight:600}.tod h3{font-size:22px}.lv{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:3px 9px;border-radius:8px;white-space:nowrap}.lv-B{background:#22c55e22;color:#22c55e}.lv-I{background:#f59e0b22;color:#f59e0b}.lv-A{background:#ef444422;color:#ef4444}.formula{font-family:"Cambria Math","STIX Two Math",Georgia,serif;font-size:15px;color:var(--c2);background:var(--bg2);padding:3px 10px;border-radius:8px;display:inline-block}.formula.sm{font-size:13px;white-space:nowrap}.formula.lg{font-size:24px;padding:10px 20px}.page{padding-top:34px;padding-bottom:50px}.page.narrow{max-width:860px}.page h1{font-size:clamp(26px,4vw,38px);margin-bottom:8px}.lead{color:var(--mut);font-size:17px}.crumb{font-size:13px;color:var(--mut);margin-bottom:6px}.crumb a{color:var(--acc)}.chips{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.chip{padding:7px 16px;border-radius:99px;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--mut)}.chip.on,.chip:hover{background:var(--acc);border-color:var(--acc);color:#fff}.bar2{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.bar2 .inp{flex:1;min-width:220px;margin:0}.ahead{display:flex;gap:20px;align-items:center;padding:24px;border-radius:var(--r);background:linear-gradient(135deg,color-mix(in srgb,var(--cc) 20%,var(--card)),var(--card));border:1px solid var(--line);margin-bottom:20px;flex-wrap:wrap}.ahead>div:nth-child(2){flex:1;min-width:240px}.abtns{display:flex;gap:10px}.tlist{display:flex;flex-direction:column;gap:8px}.trow,.res{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--card);border:1px solid var(--line);border-radius:12px;transition:border-color .15s,transform .15s}.trow:hover,.res:hover{border-color:var(--acc);transform:translateX(3px)}.tt{flex:1;min-width:0;display:flex;flex-direction:column}.tt b{font-size:15px}.tt i{font-style:normal;color:var(--mut);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chk{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:13px;color:#04210f;flex:none}.trow.done .chk{background:var(--c3);border-color:var(--c3)}.star{color:#facc15}.thead{display:flex;flex-direction:column;gap:10px;align-items:flex-start;margin:8px 0 14px}.big{font-size:19px;line-height:1.7}.fbox{display:flex;flex-direction:column;gap:8px;align-items:flex-start;padding:16px 20px;border-left:4px solid var(--c2);background:var(--card);border-radius:0 12px 12px 0;margin:16px 0}.fbox span{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--mut);font-weight:700}.study{background:var(--bg2);border-radius:12px;padding:12px 16px;color:var(--mut);font-size:14px;margin-bottom:16px}.acts{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.pn{display:flex;justify-content:space-between;gap:12px;margin:30px 0;flex-wrap:wrap}.sim-cv{width:100%;height:340px;display:block;border-radius:12px;background:var(--bg)}.sim.compact .sim-cv{height:300px}.sim-info{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}.sim-info span{background:var(--bg2);border-radius:10px;padding:5px 12px;font-size:13px;display:flex;gap:8px}.sim-info i{font-style:normal;color:var(--mut)}.sim-info b{color:var(--c1)}.sim-lower{display:grid;grid-template-columns:minmax(240px,1fr) 1.4fr;gap:18px}.sim-plot{width:100%;height:270px;display:block}.sim-btns{display:flex;gap:8px;margin-bottom:12px}.ctl{display:block;margin:10px 0;font-size:13px;color:var(--mut)}.ctl b{color:var(--fg)}.ctl input[type=range]{width:100%;accent-color:var(--acc)}.ctl .sel{width:100%;margin-top:4px}.card.lab h3{margin-top:0}.form{display:flex;flex-direction:column;gap:14px}.frow{display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:600}.frow .sel{min-width:220px}.qhead{display:flex;justify-content:space-between;color:var(--mut);font-size:14px;margin-bottom:6px}.qtext{font-size:19px;color:var(--fg)!important;margin:14px 0!important;font-weight:600}.opt{display:block;width:100%;text-align:left;margin:8px 0;padding:12px 16px;border-radius:12px;border:1px solid var(--line);background:var(--bg2);color:var(--fg);font:inherit;cursor:pointer;transition:border-color .15s,background .15s}.opt:hover:not(:disabled){border-color:var(--acc)}.opt.sel{border-color:var(--acc);background:color-mix(in srgb,var(--acc) 20%,var(--bg2))}.opt.right{border-color:#22c55e;background:#22c55e22}.opt.wrong{border-color:#ef4444;background:#ef444422}.opt:disabled{cursor:default}.fb{font-size:14px;margin:10px 0!important}.fb.ok{color:#22c55e!important}.fb.bad{color:#ef4444!important}.rev{margin:10px 0}.rev.good{border-left:4px solid #22c55e}.rev.miss{border-left:4px solid #ef4444}.donut{width:180px;height:180px}.barc{width:100%;height:300px;display:block}.hist{width:100%;height:220px;display:block}.thdr{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.timer{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c1)}.timer.low{color:#ef4444;animation:blink 1s infinite}@keyframes blink{50%{opacity:.4}}.tgrid{display:grid;grid-template-columns:1fr 260px;gap:18px;align-items:start}.pal{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:12px 0}.pb{padding:7px 0;border-radius:8px;border:1px solid var(--line);background:var(--bg2);color:var(--fg);cursor:pointer;font:inherit;font-size:13px}.pb.ans{background:color-mix(in srgb,var(--acc) 30%,transparent)}.pb.cur{outline:2px solid var(--acc)}.pb.flag{border-color:#f59e0b}.faqs details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:0 18px}.faq summary{cursor:pointer;padding:14px 0;font-weight:600;list-style:none}.faq summary::after{content:"+";float:right;color:var(--acc);font-size:20px}.faq[open] summary::after{content:"−"}.faq p{margin:0 0 16px;color:var(--mut)}.ftr{border-top:1px solid var(--line);padding:22px 0;color:var(--mut);font-size:13px;text-align:center;margin-top:30px}@media(max-width:900px){.grid4{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:1fr 1fr}.stats{grid-template-columns:repeat(3,1fr)}.sim-lower{grid-template-columns:1fr}.tgrid{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}.burger{display:block}.nav{position:absolute;top:62px;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px;display:none;margin:0}.nav.open{display:flex}.sbox{width:auto;flex:1;margin-left:4px}}@media(max-width:560px){.grid4,.grid3{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr);margin-top:-30px}.arrow{display:none}.trow .formula{display:none}.hero{min-height:460px}.brand span:last-child{display:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}.deep p{font-size:17px;line-height:1.75;margin:0 0 14px}.dbox{border-radius:12px;padding:12px 18px;margin:12px 0}.dbox b{font-size:12px;text-transform:uppercase;letter-spacing:.08em}.dbox p{margin:6px 0 0!important;font-size:16px!important}.dbox.ex{background:color-mix(in srgb,var(--c3) 12%,var(--card));border-left:4px solid var(--c3)}.dbox.warn{background:color-mix(in srgb,var(--c4) 12%,var(--card));border-left:4px solid var(--c4)}