:root{
 --ink:#26323c;--muted:#68747c;--paper:#f7f6f1;--panel:#fff;--line:#e1e1da;
 --navy:#263f55;--blue:#56839a;--sky:#89b7c3;--sun:#d7a855;--coral:#c97d6d;--green:#7e9d83;--violet:#827aa6;
 --shadow:0 15px 40px rgba(40,58,72,.10);--wrap:min(1480px,calc(100% - 36px))
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.69;
background:radial-gradient(circle at 7% 8%,rgba(137,183,195,.12),transparent 21rem),radial-gradient(circle at 94% 7%,rgba(215,168,85,.09),transparent 19rem),linear-gradient(90deg,rgba(58,77,91,.024) 1px,transparent 1px),linear-gradient(rgba(58,77,91,.024) 1px,transparent 1px),var(--paper);background-size:auto,auto,36px 36px,36px 36px}
a{color:#3f7d94;text-underline-offset:3px}.wrap{width:var(--wrap);margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:#fff;padding:10px;z-index:100}
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:40}.nav-row{min-height:76px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:900;min-width:290px}.mark{width:50px;height:50px;border-radius:13px;background:linear-gradient(145deg,#fff,var(--sky));display:grid;place-items:center;color:var(--navy);font-size:.58rem;font-weight:950}.brand-copy{display:flex;flex-direction:column;line-height:1.05}.brand-copy small{font-size:.59rem;color:#dce7ec;text-transform:uppercase;letter-spacing:.08em}.nav-links{margin-left:auto;display:flex;gap:3px;flex-wrap:wrap}.nav-links a{color:#fff;text-decoration:none;padding:8px 9px;border-radius:8px;font-weight:760;font-size:.84rem}.nav-links a:hover,.nav-links a[aria-current=page]{background:rgba(255,255,255,.11)}.nav-toggle{display:none;margin-left:auto;background:transparent;color:#fff;border:1px solid #a4b8c3;border-radius:8px;padding:8px 10px}
.hero{background:radial-gradient(circle at 84% 13%,rgba(215,168,85,.28),transparent 24rem),radial-gradient(circle at 94% 87%,rgba(126,157,131,.20),transparent 22rem),linear-gradient(125deg,#263f55,#5a8396);color:#fff;padding:78px 0 64px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}.eyebrow,.kicker{font-size:.76rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.eyebrow{color:#f0d3a0}.kicker{color:#56869a}h1,h2,h3{line-height:1.14;letter-spacing:-.03em}h1{font-size:clamp(2.2rem,5vw,4.65rem);margin:.25em 0}.hero p{font-size:1.17rem;color:#f4f8fa}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;padding:12px 16px;border-radius:10px;font-weight:850;text-decoration:none;border:1px solid transparent}.btn-primary{background:var(--sun);color:#294054}.btn-secondary{border-color:#d4e0e5;color:#fff}
.board{background:rgba(22,43,58,.44);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:22px}.board-row{display:grid;grid-template-columns:130px 1fr;gap:14px;align-items:center;background:#fff;color:#2d373d;border-radius:11px;padding:13px;margin:9px 0;border-left:5px solid var(--sky)}.board-row:nth-child(2){border-color:var(--coral)}.board-row:nth-child(3){border-color:var(--green)}.board-row:nth-child(4){border-color:var(--sun)}.board-row b{font-size:.84rem}.board-row span{font-size:.77rem;color:#68767c}
.section{padding:60px 0}.section-tight{padding:42px 0}.lead{font-size:1.13rem;color:#606d75;max-width:950px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.card,.article,.toc{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow)}.card{border-radius:18px;padding:24px}.card-link{display:block;color:inherit;text-decoration:none;transition:.16s}.card-link:hover{transform:translateY(-2px)}
.page-head{padding:52px 0 28px}.page-head h1{font-size:clamp(2.1rem,4vw,3.55rem)}.page-head p{font-size:1.1rem;color:#637078;max-width:950px}.breadcrumbs,.meta,.small,.notice{font-size:.86rem;color:#707d83}.pill{display:inline-flex;background:#ecf2f3;color:#52747d;padding:5px 9px;border-radius:999px;margin:2px;font-size:.76rem;font-weight:850}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:40px;align-items:start}.article{border-radius:20px;padding:clamp(24px,4vw,50px)}.article h2{margin-top:1.6em;font-size:clamp(1.5rem,2.6vw,2.05rem)}.article p,.article li{max-width:86ch}.toc{position:sticky;top:96px;border-radius:14px;padding:20px}.toc a{display:block;color:#66767d;text-decoration:none;padding:6px 0}.note{border-left:5px solid var(--sun);background:#fff8e9;border-radius:0 12px 12px 0;padding:18px 20px;margin:24px 0}.safe{border-left-color:var(--green);background:#eef5f0}.sourcebox{margin-top:28px;background:#eef3f4;border:1px solid #d8e3e5;padding:20px;border-radius:13px}
.tool{background:linear-gradient(145deg,#304e62,#5d8192);color:#fff;padding:26px;border-radius:18px}.tool input,.tool select{width:100%;padding:11px;border-radius:8px;border:1px solid #bdccd2;font:inherit}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.result{background:#fff;color:#2d373d;border-radius:10px;padding:17px;margin-top:18px}.result strong{font-size:1.3rem}.checklist label{display:flex;gap:10px;align-items:flex-start;background:rgba(255,255,255,.08);padding:10px;border-radius:8px;margin:8px 0}.checklist input{width:auto;margin-top:5px}.faq details{border:1px solid var(--line);border-radius:10px;padding:14px;margin:10px 0}.faq summary{font-weight:850;cursor:pointer}
.site-footer{margin-top:60px;background:#223b50;color:#dfe9ee;padding:42px 0 26px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:26px}.site-footer h3{color:#fff}.site-footer a{color:#eaf1f4}.footer-brand{color:#fff;font-weight:900}.footer-note{margin-top:22px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:.84rem;color:#bdcbd1}.not-found{text-align:center;padding:90px 20px}.code{font-size:5rem;font-weight:950;color:var(--sun)}
@media(max-width:980px){.hero-grid,.article-shell{grid-template-columns:1fr}.toc{position:static}.grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){:root{--wrap:min(100% - 24px,1480px)}.site-header{position:relative}.brand{min-width:0;max-width:76%}.brand-copy small{display:none}.nav-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#486f82;padding:12px 18px;flex-direction:column}.nav-links.open{display:flex}.grid,.grid-2,.form-grid,.footer-grid{grid-template-columns:1fr}.board-row{grid-template-columns:1fr}.article{padding:22px 18px}}