:root{--ink:#20262b;--muted:#69747a;--paper:#fcfbf7;--black:#15191d;--gold:#c89b2b;--gold2:#e1bd58;--blue:#315e7c;--teal:#3c8078;--line:#ded9cd;--max:1450px;--shadow:0 16px 44px rgba(25,27,29,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.68}a{color:#28687a;text-underline-offset:.18em}a:hover{color:#956c13}.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:10px;background:#fff;padding:10px;z-index:100}
header{position:sticky;top:0;z-index:50;background:rgba(252,251,247,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.top{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:900}.mark{width:46px;height:46px;border-radius:12px;background:var(--black);position:relative}.mark:before{content:"Au";position:absolute;inset:0;display:grid;place-items:center;color:var(--gold2);font-size:1.2rem;font-weight:950}.mark:after{content:"79";position:absolute;right:5px;top:2px;color:#dfc36d;font-size:.49rem;font-weight:800}nav ul{display:flex;gap:13px;list-style:none;margin:0;padding:0;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink);font-size:.88rem;font-weight:780}.menu{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 11px;font-weight:800}
.hero{background:linear-gradient(120deg,#f5f0e1 0,#fafafa 48%,#eaf2f3 100%);border-bottom:1px solid var(--line)}.heroGrid{display:grid;grid-template-columns:1.03fr .97fr;gap:54px;align-items:center;padding:72px 0}.eyebrow{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;font-weight:900;color:#9c741e}h1,h2,h3{line-height:1.14;letter-spacing:-.028em}h1{font-size:clamp(2.5rem,6vw,5rem);margin:.23em 0 .29em}.hero p,.pageHero p{font-size:1.13rem;color:#5f6c72;max-width:900px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;padding:12px 18px;border-radius:999px;border:1px solid #bdb6a5;background:#fff;color:var(--ink);font-weight:850;text-decoration:none}.primary{background:var(--black);border-color:var(--black);color:#fff}
.circuit{height:420px;position:relative;border-radius:22px;overflow:hidden;border:1px solid #cfc8b7;background:linear-gradient(135deg,#20262b,#353d43);box-shadow:var(--shadow)}.chip{position:absolute;left:50%;top:50%;width:150px;height:150px;transform:translate(-50%,-50%);background:#11171b;border:8px solid var(--gold);border-radius:18px}.chip:before{content:"Au";position:absolute;inset:0;display:grid;place-items:center;color:var(--gold2);font-size:3.6rem;font-weight:950}.trace{position:absolute;height:4px;background:var(--gold2)}.t1{left:18px;top:92px;width:210px}.t2{right:16px;top:92px;width:205px}.t3{left:15px;bottom:86px;width:215px}.t4{right:16px;bottom:86px;width:205px}.pad{position:absolute;width:38px;height:38px;border:4px solid var(--gold);border-radius:8px}.p1{left:50px;top:73px}.p2{right:48px;top:73px}.p3{left:50px;bottom:68px}.p4{right:48px;bottom:68px}.label{position:absolute;left:28px;bottom:22px;background:#f7efd9;color:#4e431e;border-radius:10px;padding:9px 13px;font-weight:850}
.section{padding:62px 0}.soft{background:#eef3f2}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:23px;box-shadow:0 8px 24px rgba(32,38,43,.055)}.card h3{margin-top:0}.kicker{font-size:.74rem;text-transform:uppercase;letter-spacing:.11em;color:#9c741e;font-weight:900}.pageHero{background:linear-gradient(120deg,#f7f0dc,#eef4f4);border-bottom:1px solid var(--line);padding:52px 0 43px}.pageHero h1{font-size:clamp(2.15rem,5vw,4rem);max-width:1120px}.breadcrumbs{padding-top:15px;font-size:.9rem;color:var(--muted)}.content{max-width:980px}.content p{font-size:1.045rem}.note{margin:26px 0;padding:18px 20px;border-left:5px solid var(--gold);background:#fff8df;border-radius:0 12px 12px 0}.warning{border-left-color:#b7653d;background:#fff0e8}.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px;text-decoration:none;font-weight:800}.tool{max-width:900px;background:#fff;border:1px solid #d1c9b8;border-radius:17px;padding:26px;box-shadow:var(--shadow)}.formgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-weight:800}.field input,.field select{padding:11px 12px;border:1px solid #a8afb2;border-radius:8px;font:inherit}.result{margin-top:17px;padding:17px;background:#eef7f4;border:1px solid #c6ded7;border-radius:10px}.result strong{font-size:1.35rem;color:#2b746b}
footer{background:#171c20;color:#dfe5e8;margin-top:60px}.foot{display:grid;grid-template-columns:1.05fr 1.95fr;gap:40px;padding:46px 0}.footlinks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px 18px}.footlinks a{color:#f5f7f8;text-decoration:none}.fine{border-top:1px solid #3b4247;padding:17px 0 26px;color:#aeb9be;font-size:.89rem}.cookie{background:none;border:0;padding:0;color:inherit;text-decoration:underline;font:inherit;cursor:pointer}
@media(max-width:1060px){nav{display:none}.menu{display:block}nav.open{display:block;position:absolute;top:78px;left:0;right:0;background:#fcfbf7;padding:17px;border-bottom:1px solid var(--line)}nav.open ul{width:min(var(--max),calc(100% - 36px));margin:auto;display:grid;grid-template-columns:repeat(2,1fr)}.heroGrid{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related{grid-template-columns:repeat(2,minmax(0,1fr))}.foot{grid-template-columns:1fr}}
@media(max-width:640px){.wrap{width:min(var(--max),calc(100% - 24px))}.grid,.grid2,.formgrid,.related{grid-template-columns:1fr}.footlinks{grid-template-columns:repeat(2,1fr)}.circuit{height:340px}.section{padding:45px 0}}