:root{--ink:#152238;--blue:#245ce5;--purple:#8246c6;--line:#dbe3ef;--muted:#52627a;--paper:#f3f6fb;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);font-size:16px;line-height:1.65;font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0}a{color:var(--blue);text-underline-offset:4px}button,select,input{font:inherit}button,select{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #e4a63e;outline-offset:5px}.wrap{width:min(1180px,calc(100% - 64px));margin:auto}header{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}nav{display:flex;align-items:center;min-height:76px;gap:32px}.brand{font-size:24px;font-weight:750;letter-spacing:-.8px;color:var(--ink);text-decoration:none;white-space:nowrap}.brand span{color:var(--blue)}.brand small{font-size:13px;font-weight:500;letter-spacing:0;color:var(--muted)}.navlinks{margin-left:auto;display:flex;gap:26px}.navlinks a{color:var(--muted);text-decoration:none;font-size:14px}.navlinks a:hover{color:var(--blue)}.lang{border:1px solid var(--line);background:white;padding:5px 12px;border-radius:6px;font-size:14px;color:var(--ink)}.skip{position:absolute;top:-80px;background:white;padding:10px;z-index:20}.skip:focus{top:8px}.hero{background:#101d36;color:white;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:64px;padding-top:74px;padding-bottom:82px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:2.2px;color:var(--blue);margin:0 0 22px}.hero .eyebrow{color:#98b9ff}.hero h1{font-size:clamp(50px,6vw,82px);line-height:1.05;letter-spacing:-3px;margin:0 0 16px;font-weight:750}.hero h2{font-size:clamp(25px,3vw,38px);line-height:1.22;letter-spacing:-.7px;font-weight:450;margin:0 0 26px}.hero-copy{font-size:17px;color:#becce1;max-width:540px;line-height:1.8}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{padding:12px 19px;font-size:14px;font-weight:600;border-radius:5px;text-decoration:none}.primary{background:#82aaff;color:#0b1a31}.ghost{border:1px solid #485773;color:#e6edf9}.hero-result{position:relative;padding:30px;border:1px solid #344965;border-radius:10px;background:#152743;overflow:hidden}.hero-result .eyebrow{font-size:11px;letter-spacing:1.5px}.score-line{display:flex;align-items:baseline;justify-content:space-between;gap:8px;letter-spacing:-2px;font-size:clamp(27px,3.3vw,46px);line-height:1.5}.score-line>span{color:#91a7c8}.score-line strong{color:#a6c1ff;font-weight:600}.score-line small{font-size:.42em;letter-spacing:0}.score-line .arrow{font-size:27px;color:#98b9ff}.score-labels{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:#a9bcd5}.hero-rule{height:1px;background:#344965;margin:30px 0}.hero-foot strong{font-size:24px;font-weight:600}.hero-foot strong span{font-size:14px;font-weight:400;color:#b9c9df}.hero-foot p{font-size:13px;color:#a9bcd5;margin:5px 0}.tiny-bars{display:flex;align-items:end;gap:8px;height:67px;margin-top:22px}.tiny-bars i{flex:1;background:#82aaff2e;height:50%;border-top:2px solid #719ae0}.tiny-bars i:nth-child(2n){height:60%}.tiny-bars i:nth-child(n+5){height:75%}.tiny-bars i:nth-child(n+9){height:90%}.tiny-bars i:last-child{height:100%;background:#82aaff60}.specs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line);padding:26px 0}.specs>div{padding-left:25px;border-left:1px solid var(--line)}.specs>div:first-child{padding-left:0;border:0}.specs strong{font-size:26px;font-weight:650;display:block;line-height:1.3}.specs span{font-size:13px;color:var(--muted)}.section{padding-top:82px;padding-bottom:86px}.shade{background:var(--paper);border-block:1px solid var(--line)}.section-head{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:start;margin-bottom:38px}.section-head h2{font-size:clamp(29px,3vw,40px);font-weight:620;line-height:1.23;letter-spacing:-1.1px;margin:0}.section-head>p{margin:0;color:var(--muted);line-height:1.9}.loop-diagram{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:8px;overflow:hidden}.loop-diagram article{padding:25px 22px;border-right:1px solid var(--line);position:relative}.loop-diagram article:last-child{border:0;background:#f5f1fc}.step-number{font-size:13px;font-weight:700;color:var(--blue);display:block;margin-bottom:25px}.loop-diagram h3{font-size:17px;line-height:1.4;margin:0 0 12px}.loop-diagram p{font-size:14px;line-height:1.85;color:var(--muted);margin:0}.equation{display:flex;align-items:center;gap:38px;margin-top:25px;padding:25px;background:var(--paper);border-left:3px solid var(--purple)}.equation>span{font-family:Cambria,Georgia,serif;font-size:26px;white-space:nowrap}.equation p{font-size:14px;color:var(--muted);margin:0}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:8px;background:white}table{width:100%;border-collapse:collapse;text-align:left;white-space:nowrap}caption{font-size:13px;text-align:left;padding:15px 24px;color:var(--muted);border-bottom:1px solid var(--line)}th{font-size:13px;color:var(--muted);font-weight:600}th,td{padding:16px 24px;border-bottom:1px solid var(--line)}td{font-size:17px;font-variant-numeric:tabular-nums}th:nth-child(n+3),td:nth-child(n+3){text-align:right}tr:last-child td{border:0}.highlight{background:#eaf0fe;color:#143ca1;font-weight:650}figure{margin:34px 0 22px}figure img{display:block;width:100%;height:auto;background:white;border-radius:5px}figcaption{font-size:13px;color:var(--muted);line-height:1.7;padding-top:12px}.findings{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:34px}.findings article{border-top:2px solid var(--blue);padding-top:21px}.findings article+article{border-color:#a3acbc}.tag{font-size:11px;letter-spacing:1.2px;color:var(--blue);font-weight:700}.tag.neutral{color:var(--muted)}h3{font-weight:600}.findings h3{font-size:21px;margin:9px 0}.findings p{color:var(--muted);font-size:15px;margin:0}.chart-panel{border:1px solid var(--line);padding:22px 26px;border-radius:8px;min-height:380px}.chart-controls{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.chart-controls label,.bank-controls label{font-size:14px;font-weight:600}select{background:white;border:1px solid #bac7da;padding:7px 30px 7px 10px;border-radius:5px;color:var(--ink);font-size:14px;max-width:100%}.chart-legend{font-size:12px;color:var(--muted);margin-left:auto}#training-chart svg{width:100%;height:auto;display:block}.scrub{display:flex;align-items:center;gap:16px;font-size:14px;flex-wrap:wrap}.scrub input{flex:1;min-width:120px;accent-color:var(--blue)}.scrub output{min-width:130px;font-variant-numeric:tabular-nums;font-size:14px}.note{font-size:13px;color:var(--muted);line-height:1.85}.downloads{display:flex;gap:25px;flex-wrap:wrap;font-size:14px}.bank-controls{display:flex;align-items:center;gap:16px}.skill{border:1px solid var(--line);border-radius:5px;background:white;margin:10px 0}.skill summary{display:flex;align-items:center;gap:15px;padding:16px 20px;cursor:pointer;font-size:15px;font-weight:550;list-style:none}.skill summary::before{content:'+';font-size:19px;color:var(--blue);width:14px}.skill[open] summary::before{content:'−'}.skill .coefficient{margin-left:auto;white-space:nowrap;color:var(--purple);font-variant-numeric:tabular-nums;font-size:13px}.skill pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0 20px 22px;padding-top:15px;border-top:1px solid var(--line);font-family:inherit;font-size:14px;line-height:1.95;color:var(--muted)}.skill-id{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-top:4px}.figure-details,.limitations{margin-top:30px;border-top:1px solid var(--line);padding-top:18px}.figure-details>summary,.limitations>summary{cursor:pointer;font-size:15px;font-weight:600}.resources{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.resources>a{padding:22px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink)}.resources>a:hover{border-color:var(--blue);background:var(--paper)}.resources strong{display:block;font-size:15px;font-weight:600;margin-bottom:8px}.resources span{font-size:12px;color:var(--muted)}.code{padding:24px;background:#101d36;color:#dbe8ff;overflow:auto;font-size:14px;line-height:1.8;border-radius:6px;margin-top:25px}.limitations li{font-size:14px;line-height:1.9;color:var(--muted);margin-bottom:10px}.limitations ul{padding-left:22px}footer{background:var(--paper);border-top:1px solid var(--line);padding:33px 0}footer>.wrap{display:flex;gap:25px;align-items:center;flex-wrap:wrap}footer p{font-size:12px;color:var(--muted);margin:0;flex:1}footer>a,footer .wrap>a:last-child{font-size:13px}.error{padding:25px;border:1px solid #b64343;color:#852b2b}
.method-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:6px 0 30px}.method-principles article{border:1px solid var(--line);border-radius:7px;padding:21px;background:var(--paper)}.method-principles article>span{font-size:12px;font-weight:750;color:var(--purple);letter-spacing:1px}.method-principles strong{display:block;font-size:17px;margin:8px 0}.method-principles p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}.framework-figure{margin:28px 0 35px;padding:16px;border:1px solid var(--line);border-radius:8px;background:white}.framework-figure img{border-radius:3px}.method-link{font-size:14px;margin-top:22px}
@media(max-width:950px){.hero-grid{gap:30px}.hero-result{padding:24px}.section-head{gap:30px}.method-principles{grid-template-columns:1fr}.loop-diagram{grid-template-columns:1fr 1fr}.loop-diagram article:nth-child(2){border-right:0}.loop-diagram article:nth-child(-n+2){border-bottom:1px solid var(--line)}.resources{grid-template-columns:1fr 1fr}.brand small{display:none}.navlinks{gap:18px}.hero-grid{padding-top:55px;padding-bottom:60px}}
@media(max-width:680px){.wrap{width:calc(100% - 36px)}nav{gap:14px;min-height:64px;flex-wrap:wrap;padding-block:12px}.brand{font-size:21px}.navlinks{order:3;justify-content:space-between;width:100%;margin-left:0;gap:10px}.navlinks a{font-size:13px}.lang{margin-left:auto}.hero-grid,.section-head{grid-template-columns:1fr;gap:28px}.hero-grid{padding-top:42px;padding-bottom:44px}.hero h1{font-size:60px}.hero-result{max-width:100%}.score-line{font-size:42px}.specs{grid-template-columns:1fr 1fr;row-gap:22px}.specs>div:nth-child(3){border:0;padding:0}.specs strong{font-size:23px}.section{padding-block:54px}.section-head h2{font-size:31px}.loop-diagram{grid-template-columns:1fr}.loop-diagram article{border-right:0;border-bottom:1px solid var(--line)!important}.loop-diagram article:last-child{border-bottom:0!important}.step-number{margin-bottom:8px}.equation{display:block;padding:20px}.equation p{margin-top:12px}.findings{grid-template-columns:1fr;gap:25px}th,td{padding:14px}.chart-panel{padding:16px 12px;min-height:300px}.chart-legend{margin:0;width:100%}.scrub{gap:9px;font-size:12px}.scrub output{min-width:auto;font-size:12px}.skill summary{padding:14px 12px;gap:10px;flex-wrap:wrap}.skill summary>span:first-of-type{flex:1;min-width:190px}.skill .coefficient{margin-left:24px}.resources{grid-template-columns:1fr 1fr;gap:10px}.resources>a{padding:16px}.resources strong{font-size:14px}.bank-controls{align-items:start;flex-direction:column;gap:8px}footer>.wrap{display:block}footer p{margin-block:14px}.downloads{gap:14px;font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}