:root{--bg:#f3efe7;--paper:#fbf8f2;--ink:#102238;--green:#255b8f;--muted:#617186;--line:rgba(16,34,56,.12);--dark:#081625;--gold:#d4b27a;--font-display:"Helvetica Neue","Aptos Display","Segoe UI",Arial,sans-serif;--font-text:"Helvetica Neue","Aptos","Segoe UI",Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-text);line-height:1.55}h1,h2,h3,strong,b{font-family:var(--font-display)}.container{width:min(1160px,calc(100% - 44px));margin:auto}.narrow{max-width:850px}.bar{height:62px;position:sticky;top:0;z-index:20;background:rgba(250,247,240,.92);backdrop-filter:blur(14px);display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800}.brand img{width:36px;height:36px;object-fit:contain;border-radius:9px}.bar nav{display:flex;gap:18px}.bar nav a{text-decoration:none;font-size:.78rem;color:#53605a}.eyebrow{font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;font-weight:800;color:var(--green);margin:0 0 22px}.hero{min-height:92svh;position:relative;display:flex;align-items:flex-end;color:#fff;overflow:hidden}.hero-art{position:absolute;inset:0;background:url('../assets/images/hero-niu-general.png') center/cover no-repeat;filter:saturate(.82) contrast(1.03)}.veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,11,9,.12),rgba(5,11,9,.9))}.hero-content{position:relative;padding:100px 0 65px}.hero .eyebrow{color:#d5e2da}.hero h1{font-size:clamp(3.2rem,7.4vw,7.3rem);line-height:.9;letter-spacing:-.07em;margin:0;max-width:1050px}.hero p:not(.eyebrow){max-width:700px;font-size:1.2rem;color:#d4ddd8}.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:55px}.hero-stats article{border-top:1px solid rgba(255,255,255,.25);padding-top:16px}.hero-stats strong{display:block;font-size:2.2rem}.hero-stats span{font-size:.85rem;color:#c4cec8}.section{padding:clamp(85px,11vw,150px) 0;border-top:1px solid var(--line)}.section h2,.closing h2{font-size:clamp(2.5rem,5vw,5.2rem);line-height:.98;letter-spacing:-.055em;margin:0 0 35px}.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.evidence-grid article{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:28px}.evidence-grid article>span{font-size:.8rem;color:#87928d}.evidence-grid strong{display:block;margin-top:35px;font-size:2rem;color:var(--green)}.evidence-grid h3{font-size:1.4rem}.evidence-grid p{color:#5c6862}.chain{margin:70px auto 18px;display:flex;align-items:center;justify-content:center;gap:15px;flex-wrap:wrap}.chain div{font:700 clamp(1.4rem,3vw,2.6rem) "Manrope";background:#dfe8f2;border-radius:999px;padding:13px 20px}.chain span{color:#7c8781}.chain-note{text-align:center;max-width:750px;margin:auto;color:#5d6862}.dark{background:var(--dark);color:#fff}.dark .eyebrow{color:#a4bbae}.dark h2{max-width:900px}.lever-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.lever-grid article{border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:26px;background:rgba(255,255,255,.035)}.lever-grid article:last-child{grid-column:2/3}.lever-grid span{font-size:.8rem;color:#82958b}.lever-grid h3{font-size:1.6rem;margin:38px 0 12px}.lever-grid p{color:#bdc7c2}.story{background:#e6edf7}.story-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px}.story-copy p{font-size:1.15rem;color:#56625c}.simulator{background:var(--paper)}.sim-head{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}.sim-head button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:11px 15px;font-weight:800;cursor:pointer}.base-inputs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:48px 0 20px}.base-inputs label{background:#f0eee7;border:1px solid var(--line);padding:20px;border-radius:20px}.base-inputs span{display:block;font-size:.82rem;color:#5f6b65;margin-bottom:10px}.base-inputs input{width:100%;border:0;background:transparent;font:700 1.4rem "Manrope";outline:none}.sim-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:16px;align-items:start}.outputs{position:sticky;top:78px;background:linear-gradient(135deg,#214f84,#102238);color:#fff;border-radius:26px;padding:30px}.outputs>p{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;color:#c4d4cc}.outputs article{padding:22px 0;border-top:1px solid rgba(255,255,255,.18)}.outputs article span{display:block;color:#c5d1cb;font-size:.86rem}.outputs article strong{display:block;font-size:clamp(2rem,4.5vw,4.2rem);letter-spacing:-.04em}.outputs small{display:block;color:#b9c8c0;margin-top:16px}.controls{display:grid;gap:10px}.control{background:#f2f0e9;border:1px solid var(--line);border-radius:20px;padding:20px}.control-title{display:flex;justify-content:space-between;gap:20px}.control-title span{font-weight:700}.control-title output{font-weight:800;color:var(--green);white-space:nowrap}.range-wrap{position:relative;margin:18px 0 9px}.range-wrap input{width:100%;accent-color:var(--green)}.range-wrap i{position:absolute;top:50%;transform:translate(-50%,-50%);height:21px;width:2px;background:#6b91bd;pointer-events:none}.ref-btn{border:0;background:transparent;padding:0;color:#587ba1;font-weight:700;font-size:.76rem;cursor:pointer}.method-note{margin-top:25px;padding:22px;border:1px solid var(--line);border-radius:18px;color:#5a6660;font-size:.9rem}.validation-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.validation-grid article{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:24px}.validation-grid strong{color:#8a948f;font-size:.8rem}.validation-grid h3{font-size:1.4rem}.validation-grid p{color:#5e6963}.closing{padding:clamp(105px,14vw,180px) 0;text-align:center;background:#dde8df}.closing p{font-size:1.15rem}.closing strong{font-size:1.35rem;color:var(--green)}.refs ol{list-style:none;margin:45px 0 0;padding:0}.refs li{display:grid;grid-template-columns:1.1fr 1fr auto;gap:18px;padding:20px 0;border-top:1px solid var(--line)}.refs li span{color:#5e6963}.refs a{color:var(--green);font-weight:800;text-decoration:none}.note{font-size:.88rem;color:#66716b;margin-top:45px}footer{padding:50px 20px;text-align:center;background:#08100d;color:#fff}footer img{width:62px;margin:auto;border-radius:14px}footer p{color:#b9c5be}
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@media(max-width:560px){.container{width:calc(100% - 28px)}.hero-stats,.evidence-grid,.lever-grid,.base-inputs,.validation-grid{grid-template-columns:1fr}.hero h1{font-size:3.35rem}.section{padding:72px 0}.control-title{align-items:flex-start}.outputs article strong{font-size:2.65rem}}