:root{--bg:#081427;--ink:#f3f6ff;--muted:#a4b6ce;--line:#26384f;--blue:#2a5ae8;--acid:#eff23f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--acid);outline-offset:5px}a:hover{color:var(--acid)}.shell{max-width:1320px;margin:auto;padding:0 48px}.mono{font:12px/1.5 ui-monospace,monospace;letter-spacing:.12em}.eyebrow{color:var(--acid)}.topbar{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{font-size:19px;font-weight:700}.brand span{color:var(--acid);margin:0 8px}.top-label{color:var(--muted)}nav{display:flex;gap:30px;flex-wrap:wrap;padding:17px 0;font-size:13px;color:var(--muted)}.hero{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(90deg,#081427 8%,#081427af 50%,#08142700),url('/assets/mechanical-exploded.png') center right/cover,#0c1e36;padding:75px 0 82px}.hero h1{font-size:clamp(75px,10vw,144px);font-weight:900;line-height:.93;letter-spacing:-.06em;margin:25px 0 28px}.hero h1 span{color:var(--blue)}.hero h2{font-size:30px;font-weight:500;margin:0 0 14px}.english{font-size:14px;line-height:1.55;color:#c3cfe2;max-width:580px}.intro{font-size:16px;color:var(--muted);margin:25px 0}.cta{display:inline-block;background:var(--acid);padding:14px 24px;font-weight:700;color:var(--bg);margin-top:16px}.cta:hover{background:white;color:var(--bg)}.secondary{margin-left:28px;font-size:14px}.strip{display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px;padding:23px 0;border-bottom:1px solid var(--line)}.about{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;padding:90px 0 50px}.about h2,.section-head h2{font-size:38px;line-height:1.4;letter-spacing:-.025em;margin:14px 0}.about p{color:var(--muted);margin-top:0}.text-link{display:inline-block;margin-top:14px;border-bottom:1px solid var(--acid);font-size:14px}.stats{display:grid;grid-template-columns:repeat(4,1fr);padding:28px 0 70px;gap:28px}.stats>div{border-top:1px solid var(--line);padding-top:22px}.stats strong{font-size:44px;font-weight:500;letter-spacing:-.04em}.stats strong span{font-size:13px;letter-spacing:0;margin-left:8px;color:var(--muted)}.stats p{font-size:12px;color:var(--muted)}.light{background:#eff1f3;color:#0a1526;padding:65px 0 80px;background-image:linear-gradient(#c9d1dd50 1px,transparent 1px),linear-gradient(90deg,#c9d1dd50 1px,transparent 1px);background-size:144px 144px}.light .eyebrow{color:#234fd5}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px;gap:25px}.section-head p{color:var(--muted);font-size:14px}.light .section-head p{color:#485b75}.directions{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.directions a{display:block;background:#f8faff;border:1px solid #c5cfdd;padding:30px;min-height:270px}.directions a:hover{border-color:#2a5ae8;color:#173d9b}.directions .mono{color:#234fd5}.directions h3{font-size:24px;margin:25px 0 12px}.directions p{font-size:14px;color:#485b75}.directions b{font-size:12px;display:block;margin-top:26px;color:#234fd5}.explore{padding-top:80px;padding-bottom:75px}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.card{position:relative;border:1px solid var(--line);padding:30px;transition:background .2s,border-color .2s}.card:hover{background:#10223a;border-color:#6484b6}.card h3{font-size:25px;margin:18px 0 10px}.card p{font-size:14px;color:var(--muted)}.arrow{position:absolute;right:26px;bottom:26px;color:var(--acid);font-size:24px}.contact{padding-top:45px;padding-bottom:85px;border-top:1px solid var(--line)}.contact h2{font-size:36px;margin:20px 0 12px}.contact p{color:var(--muted)}footer{border-top:1px solid var(--line);padding:45px 0 25px}.footrow{display:flex;justify-content:space-between;gap:50px;font-size:13px}.footrow p{color:var(--muted);font-size:12px}.footword{font-size:clamp(28px,5.5vw,76px);font-weight:900;letter-spacing:-.04em;line-height:1.1;color:#244164;margin:50px 0 35px}.fine{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px}.page-head{padding-top:65px;padding-bottom:50px;border-top:1px solid var(--line)}.page-head h1{font-size:clamp(40px,6vw,76px);line-height:1.2;margin:22px 0}.back{color:var(--muted);font-size:13px}.reading-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:65px;padding-bottom:50px}aside{align-self:start;position:sticky;top:30px;border-top:1px solid var(--line);padding-top:20px}aside .mono{font-size:10px;color:var(--muted);margin-bottom:16px}aside a{display:block;padding:8px 0;font-size:14px;color:var(--muted)}.document{min-width:0;max-width:890px}.document h2{font-size:26px;margin:45px 0 18px;border-top:1px solid var(--line);padding-top:26px}.document h2:first-child{margin-top:0}.document p{line-height:2.05;color:#c3cfe2;margin:0 0 22px;overflow-wrap:anywhere}.table-wrap{overflow:auto;margin:24px 0 45px;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;font-size:13px;min-width:500px}th,td{padding:16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;min-width:65px}th{background:#163256;color:var(--ink);font-weight:600}td{color:#c3cfe2}tr:nth-child(even){background:#102038}.next{text-align:right;border-top:1px solid var(--line);padding-top:30px;padding-bottom:50px}.skip{position:absolute;left:20px;top:-100px;background:var(--acid);color:#081427;padding:10px;z-index:10}.skip:focus{top:10px}@media(max-width:900px){.top-label{display:none}.shell{padding-left:28px;padding-right:28px}nav{gap:18px}.about{gap:35px}.reading-layout{grid-template-columns:150px minmax(0,1fr);gap:30px}.directions{gap:15px}.directions a{padding:22px}.stats{gap:15px}.stats strong{font-size:35px}}@media(max-width:620px){.shell{padding-left:20px;padding-right:20px}.topbar{min-height:76px}.brand{font-size:14px}nav{gap:12px 21px;font-size:12px}.hero{padding:50px 0 60px;background-position:center}.hero h1{font-size:78px}.hero h2{font-size:23px}.english{font-size:12px}.secondary{display:block;margin:20px 0 0}.strip{flex-direction:column;gap:8px}.about{grid-template-columns:1fr;gap:16px;padding-top:50px}.about h2,.section-head h2{font-size:30px}.stats{grid-template-columns:repeat(2,1fr);padding-bottom:40px}.directions,.cards{grid-template-columns:1fr}.section-head{display:block}.light{padding:45px 0}.explore{padding-top:50px;padding-bottom:50px}.contact h2{font-size:28px}.contact{padding-bottom:50px}.footrow,.fine{display:block}.footrow>div+div{margin-top:30px}.fine span{display:block;margin-top:12px}.reading-layout{display:block}aside{display:none}.page-head{padding-top:40px;padding-bottom:35px}.document h2{font-size:23px}.document p{font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}