:root{--ink:#172027;--muted:#5d6870;--paper:#f5f1e8;--card:#fffdf8;--line:#d7d1c5;--steel:#344955;--orange:#d96b2b;--yellow:#e6b84a;--green:#2f725a;--blue:#3f6f8c;--max:1420px;--shadow:0 12px 30px rgba(23,32,39,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}a{color:#245b78}a:hover{text-decoration-thickness:2px}.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:50;background:#fff;padding:10px;border:2px solid #000}.top{background:#1c2930;color:#fff;border-bottom:4px solid var(--orange)}.top .inner{display:flex;align-items:center;justify-content:space-between;min-height:82px;gap:24px}.brand{display:flex;align-items:center;gap:13px;color:#fff;text-decoration:none}.brand img{width:52px;height:52px}.brand strong{display:block;font-size:1.08rem}.brand span{display:block;font-size:.83rem;color:#d6e0e4}.nav{background:#293b45;position:sticky;top:0;z-index:20;box-shadow:0 2px 8px #0002}.nav .inner{display:flex;gap:3px;flex-wrap:wrap}.nav a{color:#f6f7f8;text-decoration:none;padding:12px 14px;font-weight:650;font-size:.92rem}.nav a:hover,.nav a:focus{background:#3b515d}.hero{background:linear-gradient(135deg,#21343e,#344f5c);color:#fff;padding:64px 0 52px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;border:46px solid rgba(230,184,74,.16);border-radius:50%}.hero-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.6fr);gap:32px;align-items:center;position:relative;z-index:1}.kicker{text-transform:uppercase;letter-spacing:.11em;font-size:.78rem;color:#ffd77c;font-weight:800}.hero h1{font-size:clamp(2.2rem,5vw,4.35rem);line-height:1.03;margin:.2em 0}.hero p{font-size:1.08rem;max-width:850px;color:#eaf0f2}.meter-card{background:#fff;color:var(--ink);border-radius:18px;padding:22px;box-shadow:var(--shadow)}.meter{height:18px;background:#e2e7e9;border-radius:99px;overflow:hidden;margin:8px 0 18px}.meter span{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--yellow),var(--orange))}.main{padding:42px 0 70px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.card h2,.card h3{margin-top:0;line-height:1.2}.badge{display:inline-block;background:#eaf0f2;border:1px solid #c8d5dc;border-radius:99px;padding:3px 9px;font-size:.78rem;font-weight:700;color:#314853}.section-title{margin:44px 0 18px;border-left:6px solid var(--orange);padding-left:14px}.article,.card,td,th{overflow-wrap:anywhere;word-break:normal}.article{max-width:980px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:clamp(22px,4vw,46px);box-shadow:var(--shadow)}.article h1{font-size:clamp(2rem,4vw,3.1rem);line-height:1.08}.article h2{margin-top:2rem;line-height:1.18}.callout{background:#edf3f5;border-left:5px solid var(--blue);padding:16px 18px;border-radius:8px;margin:22px 0}.warning{background:#fff4de;border-left-color:var(--orange)}.formula{background:#172027;color:#fff;padding:16px;border-radius:10px;overflow:auto;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.tool{max-width:900px}.tool form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field label{display:block;font-weight:750;margin-bottom:5px}.field input,.field select{width:100%;padding:11px 12px;border:1px solid #aab4b8;border-radius:9px;background:#fff;font:inherit}.actions{grid-column:1/-1;display:flex;gap:10px;flex-wrap:wrap}.btn{border:0;border-radius:9px;padding:11px 17px;background:var(--orange);color:#fff;font-weight:800;cursor:pointer}.btn.secondary{background:var(--steel)}.result{margin-top:20px;padding:18px;border-radius:12px;background:#eef6f1;border:1px solid #bfd8ca;min-height:64px}.result strong{font-size:1.2rem}.mini{font-size:.9rem;color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff}th,td{border:1px solid var(--line);padding:10px;text-align:left}th{background:#e8ecee}.checklist label{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid #e1ddd4}.footer{background:#172027;color:#dbe2e5;padding:42px 0 24px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.footer a{color:#f7c866}.footer .small{font-size:.86rem;color:#b9c5ca}.breadcrumbs{font-size:.9rem;color:var(--muted);margin-bottom:18px}.breadcrumbs a{color:var(--muted)}.list-links{columns:2;column-gap:35px}.list-links li{break-inside:avoid;margin-bottom:8px}.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:22px 0}.stat{background:#fff;border:1px solid var(--line);padding:16px;border-radius:12px}.stat b{display:block;font-size:1.6rem}.notice{border:1px dashed #a9863b;padding:14px;border-radius:10px;background:#fff9ea}.footer p{margin:.45em 0}@media(max-width:900px){.hero-grid,.grid,.grid.two,.footer-grid{grid-template-columns:1fr}.grid{gap:14px}.stat-row{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.wrap{width:min(100% - 24px,var(--max))}.top .inner{min-height:72px}.brand span{display:none}.nav{position:static}.nav .inner{display:grid;grid-template-columns:repeat(2,1fr)}.nav a{text-align:center;border-bottom:1px solid #ffffff16}.hero{padding:42px 0}.tool form{grid-template-columns:1fr}.list-links{columns:1}.stat-row{grid-template-columns:1fr}.article{padding:20px}.card{padding:18px}}
@media print{.nav,.top,.footer,.skip,.btn{display:none!important}body{background:#fff}.article,.card{box-shadow:none;border:0}.wrap{width:100%}}