:root{
 --ink:#16212b;--muted:#62707b;--paper:#f2f5f6;--panel:#fff;--line:#d9e1e5;
 --graphite:#202c34;--steel:#3d5360;--cyan:#3fa7b8;--blue:#4479a6;--orange:#d47a45;
 --green:#5a8b72;--amber:#e4b45d;--shadow:0 14px 40px rgba(28,45,55,.10);
 --radius:18px;--wrap:min(1480px,calc(100% - 36px));
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.68}
a{color:#2b6b82;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:#1e4c5c}
.wrap{width:var(--wrap);margin-inline:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:10px 14px;border-radius:8px;z-index:1000}
.site-header{background:#202c34;color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 1px 0 rgba(255,255,255,.08)}
.nav-row{min-height:74px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:880;letter-spacing:-.02em;min-width:320px}
.brand-mark{width:44px;height:44px;border-radius:10px;background:linear-gradient(145deg,#3fa7b8,#7cc9d4);color:#16252c;display:grid;place-items:center;font-size:.72rem;font-weight:950}
.brand-copy{display:flex;flex-direction:column;line-height:1.1}.brand-copy small{font-size:.66rem;color:#cad5da;text-transform:uppercase;letter-spacing:.08em}
.nav-links{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}.nav-links a{color:#f1f5f6;text-decoration:none;padding:8px 10px;border-radius:8px;font-size:.92rem;font-weight:720}
.nav-links a:hover,.nav-links a[aria-current="page"]{background:rgba(255,255,255,.10)}
.nav-toggle{display:none;margin-left:auto;background:transparent;color:#fff;border:1px solid #80919a;padding:8px 11px;border-radius:8px;font:inherit}
.hero{background:
radial-gradient(circle at 84% 12%,rgba(212,122,69,.22),transparent 24rem),
radial-gradient(circle at 96% 78%,rgba(63,167,184,.23),transparent 24rem),
linear-gradient(125deg,#17252d 0%,#2f4956 58%,#3f6572 100%);color:#fff;padding:76px 0 62px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(380px,.94fr);gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#ffd6a2;font-weight:860;text-transform:uppercase;letter-spacing:.08em;font-size:.76rem}.eyebrow:before{content:"";width:24px;height:3px;background:var(--amber);border-radius:4px}
h1,h2,h3{line-height:1.15;letter-spacing:-.035em}h1{font-size:clamp(2.35rem,5vw,4.65rem);margin:.26em 0}.hero p{color:#e3ecef;font-size:1.17rem;max-width:800px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:860;border-radius:10px;padding:12px 16px;border:1px solid transparent}
.btn-primary{background:var(--cyan);color:#14242b}.btn-primary:hover{background:#6bc1ce;color:#14242b}.btn-secondary{border-color:#9eb0b7;color:#fff;background:rgba(255,255,255,.04)}.btn-secondary:hover{background:rgba(255,255,255,.10);color:#fff}
.ops-card{background:rgba(9,20,25,.47);border:1px solid rgba(255,255,255,.17);border-radius:20px;padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.18)}
.ops-title{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:#d8e2e6;font-weight:850;margin-bottom:14px}
.layer-stack{display:grid;gap:8px}.stack-row{display:grid;grid-template-columns:88px 1fr;gap:10px;align-items:center;background:#f8fbfc;color:#1e2e36;border-radius:9px;padding:11px;border-left:4px solid var(--cyan)}
.stack-row:nth-child(2){border-color:var(--orange)}.stack-row:nth-child(3){border-color:var(--amber)}.stack-row:nth-child(4){border-color:var(--green)}
.stack-row b{font-size:.74rem}.stack-row span{font-size:.74rem;color:#66767e}.pulse{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:10px}.pulse div{background:rgba(255,255,255,.08);border-radius:8px;padding:8px;text-align:center;font-size:.68rem;color:#dbe4e7}.pulse b{display:block;color:#ffd49b}
.section{padding:62px 0}.section-tight{padding:42px 0}.section h2{font-size:clamp(1.75rem,3vw,2.65rem);margin:0 0 14px}.lead{font-size:1.13rem;color:#4d5c64;max-width:930px}.kicker{font-weight:900;color:#a85f38;text-transform:uppercase;letter-spacing:.08em;font-size:.76rem}
.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:24px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card h3{font-size:1.31rem;margin-top:0}.card p:last-child{margin-bottom:0}
.card-link{display:block;color:inherit;text-decoration:none;transition:transform .16s ease,border-color .16s ease}.card-link:hover{transform:translateY(-2px);border-color:#adc5ce;color:inherit}
.icon{width:48px;height:48px;border-radius:11px;background:#eaf4f7;border:1px solid #d2e4ea;display:grid;place-items:center;margin-bottom:18px;font-size:.8rem;color:#326c7e;font-weight:950}
.meta{font-size:.86rem;color:#6b7880}.pill{display:inline-flex;padding:5px 9px;border-radius:99px;background:#eaf2f5;color:#466a77;font-size:.77rem;font-weight:850;margin:2px}
.callout{border-left:5px solid var(--orange);background:#fff5ef;border-radius:0 13px 13px 0;padding:18px 20px;margin:24px 0}.callout.info{border-color:var(--cyan);background:#eef8fa}.callout.safe{border-color:#9d5c52;background:#fff5f2}
.page-head{padding:54px 0 30px}.page-head h1{font-size:clamp(2.2rem,4vw,3.7rem);margin:.18em 0}.page-head p{font-size:1.12rem;color:#51616a;max-width:900px}.breadcrumbs{font-size:.84rem;color:#6d7b82;margin-bottom:18px}.breadcrumbs a{color:inherit}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:42px;align-items:start}.article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(24px,4vw,52px);box-shadow:var(--shadow)}
.article h2{font-size:clamp(1.55rem,2.6vw,2.16rem);margin-top:1.65em}.article h3{font-size:1.27rem;margin-top:1.5em}.article p,.article li{max-width:84ch}.article table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.94rem}.article th,.article td{text-align:left;border:1px solid var(--line);padding:11px 12px;vertical-align:top}.article th{background:#edf3f5}
.toc{position:sticky;top:94px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px}.toc strong{display:block;margin-bottom:8px}.toc a{display:block;padding:6px 0;color:#596b74;text-decoration:none;font-size:.91rem}
.layers{display:grid;gap:8px;margin:26px 0}.layer{display:grid;grid-template-columns:180px 1fr;gap:18px;align-items:center;background:#f7fafb;border:1px solid #dfe8eb;border-radius:10px;padding:13px 16px}.layer strong{color:#396d7b}
.faq details{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 16px;margin-bottom:10px}.faq summary{cursor:pointer;font-weight:850}
.tool{background:linear-gradient(145deg,#22343e,#3c606d);color:#fff;border-radius:20px;padding:28px;box-shadow:var(--shadow)}.tool label{display:block;font-weight:800;margin-bottom:6px}.tool input{width:100%;padding:11px 12px;border-radius:8px;border:1px solid #9cb2bb;background:#fff;color:#1e2d34;font:inherit}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.result{margin-top:20px;padding:18px;border-radius:11px;background:#f4f8f9;color:#1e2d34}.result strong{font-size:1.42rem}.small{font-size:.87rem;color:#697980}.source-list li{margin-bottom:14px}
.site-footer{margin-top:64px;background:#17252c;color:#dae4e7;padding:45px 0 28px}.footer-grid{display:grid;grid-template-columns:minmax(260px,1.3fr) repeat(3,minmax(150px,1fr));gap:28px}.site-footer h3{color:#fff;font-size:1rem;margin-top:0}.site-footer a{color:#d0dfe3}.footer-brand{font-weight:900;color:#fff}.footer-note{font-size:.85rem;color:#a5b7bc;margin-top:24px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13)}
.notice{font-size:.85rem;color:#65737a;border-top:1px solid var(--line);margin-top:36px;padding-top:18px}.not-found{text-align:center;padding:90px 20px}.not-found .code{font-size:5rem;font-weight:950;color:#d47a45;margin:0}
@media(max-width:980px){.hero-grid,.article-shell{grid-template-columns:1fr}.toc{position:static}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){:root{--wrap:min(100% - 24px,1480px)}.site-header{position:relative}.nav-row{min-height:66px}.brand{min-width:0;max-width:76%}.brand-copy small{display:none}.nav-toggle{display:block}.nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#293842;padding:12px 18px 18px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:10px}.hero{padding:52px 0 44px}.hero-grid{gap:34px}.pulse{grid-template-columns:1fr 1fr}.grid,.grid-2,.form-grid,.footer-grid{grid-template-columns:1fr}.layer{grid-template-columns:1fr;gap:4px}.section{padding:46px 0}.article{padding:24px 18px}.article table{display:block;overflow-x:auto}}