:root{
 --ink:#242d39;--muted:#687280;--paper:#f6f8fa;--panel:#fff;--line:#dce3ea;
 --deep:#182d46;--mid:#315b78;--cyan:#6eb8c7;--violet:#7e78b7;--gold:#d9ad5d;--green:#79a18c;
 --shadow:0 15px 40px rgba(31,52,76,.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(110,184,199,.11),transparent 20rem),
radial-gradient(circle at 94% 5%,rgba(126,120,183,.08),transparent 18rem),
linear-gradient(90deg,rgba(42,72,98,.024) 1px,transparent 1px),
linear-gradient(rgba(42,72,98,.024) 1px,transparent 1px),var(--paper);
background-size:auto,auto,36px 36px,36px 36px}
a{color:#356f8d;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(--deep);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:320px}.mark{width:50px;height:50px;border-radius:14px;background:linear-gradient(145deg,#fff,var(--cyan));display:grid;place-items:center;color:var(--deep);font-size:.62rem;font-weight:950}.brand-copy{display:flex;flex-direction:column;line-height:1.05}.brand-copy small{font-size:.60rem;color:#d9e4ec;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:.86rem}.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 #8da3b5;border-radius:8px;padding:8px 10px}
.hero{background:
radial-gradient(circle at 83% 17%,rgba(217,173,93,.24),transparent 23rem),
radial-gradient(circle at 94% 82%,rgba(110,184,199,.18),transparent 22rem),
linear-gradient(125deg,#182d46,#3a6682);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:#efd29a}.kicker{color:#4c829c}h1,h2,h3{line-height:1.14;letter-spacing:-.03em}h1{font-size:clamp(2.25rem,5vw,4.65rem);margin:.25em 0}.hero p{font-size:1.17rem;color:#f3f7f9}.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(--gold);color:#1d354c}.btn-secondary{border-color:#d1dde4;color:#fff}
.board{background:rgba(12,32,51,.42);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:22px}.board-row{display:grid;grid-template-columns:132px 1fr;gap:14px;align-items:center;background:#fff;color:#2c343d;border-radius:11px;padding:13px;margin:9px 0;border-left:5px solid var(--cyan)}.board-row:nth-child(2){border-color:var(--gold)}.board-row:nth-child(3){border-color:var(--violet)}.board-row:nth-child(4){border-color:var(--green)}.board-row b{font-size:.84rem}.board-row span{font-size:.77rem;color:#68747d}
.section{padding:60px 0}.section-tight{padding:42px 0}.lead{font-size:1.13rem;color:#606c78;max-width:940px}.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)}.card h3{margin-top:7px}
.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:#62707c;max-width:940px}.breadcrumbs,.meta,.small,.notice{font-size:.86rem;color:#707b84}.pill{display:inline-flex;background:#eaf1f5;color:#466c7e;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:85ch}.toc{position:sticky;top:96px;border-radius:14px;padding:20px}.toc a{display:block;color:#64747e;text-decoration:none;padding:6px 0}.source-trail{margin-top:28px;padding:20px;border-radius:13px;background:#f3f7f9;border:1px solid #dce7eb}.source-trail a{margin-right:13px}.note{border-left:5px solid var(--gold);background:#fff8e9;border-radius:0 12px 12px 0;padding:18px 20px;margin:24px 0}
.tool{background:linear-gradient(145deg,#213e5a,#416d86);color:#fff;padding:26px;border-radius:18px}.tool input,.tool select{width:100%;padding:11px;border-radius:8px;border:1px solid #b8c6cf;font:inherit}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.result{background:#fff;color:#29343c;border-radius:10px;padding:17px;margin-top:18px}.result strong{font-size:1.30rem}.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:#172c43;color:#dfe7ee;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:#e8eff3}.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:#b9c6d0}.not-found{text-align:center;padding:90px 20px}.code{font-size:5rem;font-weight:950;color:var(--cyan)}
@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:#315b78;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}}