:root{--bg:#0c1016;--bg2:#121821;--panel:#161e29;--line:#243041;--text:#d9e1ea;--muted:#93a1b3;--head:#f1f5f9;--blue:#6b97c7;--blue2:#4f7cae;--blue-soft:rgba(107,151,199,.12);--radius:10px;--max:1160px;--read:740px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;text-rendering:optimizeLegibility}
img,svg{max-width:100%;height:auto}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#9dbde0}
h1,h2,h3{color:var(--head);line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.2vw,2.75rem);margin:.2em 0 .5em}
h2{font-size:clamp(1.35rem,2.6vw,1.7rem);margin:2em 0 .6em}
h3{font-size:1.18rem;margin:1.6em 0 .5em}
p{margin:0 0 1.1em}
.skip{position:absolute;left:-999px;top:0;background:var(--blue);color:#fff;padding:8px 14px;z-index:9}
.skip:focus{left:8px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
/* header */
.site-head{position:sticky;top:0;z-index:5;background:rgba(12,16,22,.92);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--head);text-decoration:none;font-weight:700;font-size:1.15rem;letter-spacing:.01em}
.brand svg{width:30px;height:30px}
.brand b{color:var(--blue)}
.nav{display:flex;gap:4px;align-items:center}
.nav a{color:var(--text);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.95rem}
.nav a:hover,.nav a[aria-current=page]{background:var(--blue-soft);color:var(--head)}
.nav .cta{background:var(--blue2);color:#fff;margin-left:6px}
.nav .cta:hover{background:var(--blue);color:#fff}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);border-radius:8px;padding:6px 10px;font:inherit;font-size:.9rem}
@media (max-width:760px){.menu-btn{display:block}.nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg2);border-bottom:1px solid var(--line);padding:10px 16px}.nav.open{display:flex}.nav .cta{margin:6px 0 0;text-align:center}}
/* hero */
.hero{padding:72px 0 56px;border-bottom:1px solid var(--line);background:radial-gradient(1000px 420px at 85% 10%,rgba(79,124,174,.16),transparent 60%)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero p.lead{font-size:1.15rem;color:var(--muted);max-width:36em}
.eyebrow{color:var(--blue);text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:600;margin:0 0 10px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-block;padding:12px 20px;border-radius:9px;text-decoration:none;font-weight:600;border:1px solid var(--line);color:var(--head)}
.btn.primary{background:var(--blue2);border-color:var(--blue2);color:#fff}
.btn.primary:hover{background:var(--blue);color:#fff}
.btn:hover{border-color:var(--blue)}
.hero-art{border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#111925,#0d131b);padding:18px}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero{padding:48px 0 40px}}
/* sections */
.section{padding:64px 0;border-bottom:1px solid var(--line)}
.section h2{margin-top:0}
.section .intro{color:var(--muted);max-width:44em;margin-bottom:28px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:0 0 8px;font-size:1.08rem}
.card p{color:var(--muted);margin:0;font-size:.97rem}
.card .ico{width:38px;height:38px;color:var(--blue);margin-bottom:12px}
a.card{display:block;text-decoration:none;color:inherit;transition:border-color .15s}
a.card:hover{border-color:var(--blue2)}
a.card h3{color:var(--head)}
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));padding:0;list-style:none}
.steps li{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:relative}
.steps li:before{counter-increment:s;content:counter(s,decimal-leading-zero);color:var(--blue);font-weight:700;font-size:.85rem;letter-spacing:.08em;display:block;margin-bottom:6px}
.steps strong{color:var(--head);display:block}
.steps span{color:var(--muted);font-size:.95rem}
.cta-band{padding:56px 0;background:linear-gradient(90deg,rgba(79,124,174,.14),rgba(79,124,174,.04))}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h2{margin:0 0 6px}
.cta-band p{margin:0;color:var(--muted)}
/* page */
.page-head{padding:48px 0 8px}
.page-head p{color:var(--muted);max-width:44em;font-size:1.08rem}
.prose{max-width:var(--read)}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}
.prose li{margin:.3em 0}
/* article */
.crumbs{font-size:.88rem;color:var(--muted);padding-top:28px}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li:before{content:"/";margin-right:6px;color:var(--line)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--blue)}
.article{max-width:var(--read);margin:0 auto;padding:0 20px 40px}
.article header{padding:18px 0 10px;border-bottom:1px solid var(--line);margin-bottom:28px}
.meta{color:var(--muted);font-size:.9rem;display:flex;flex-wrap:wrap;gap:6px 14px}
.meta a{color:var(--muted)}
.article blockquote{margin:1.6em 0;padding:4px 20px;border-left:3px solid var(--blue);background:var(--blue-soft);border-radius:0 8px 8px 0}
.article blockquote h3{margin:.7em 0}
.article blockquote p{margin:.8em 0}
.article ul,.article ol{padding-left:1.3em;margin:0 0 1.2em}
.article li{margin:.35em 0}
.article table{width:100%;border-collapse:collapse;margin:1.2em 0 1.6em;font-size:.95rem;display:block;overflow-x:auto}
.article th,.article td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.article th{background:var(--panel);color:var(--head)}
.article em{color:var(--head)}
.article strong{color:var(--head)}
.article h2+p strong:first-child{color:var(--head)}
.answer{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:8px;padding:16px 20px}
.end-cta{margin:44px 0 0;padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2);font-size:.97rem;color:var(--muted)}
.end-cta strong{color:var(--head)}
.back{margin-top:22px;font-size:.95rem}
/* resources index */
.cat-nav{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 18px}
.cat-nav a{border:1px solid var(--line);border-radius:999px;padding:6px 14px;text-decoration:none;color:var(--text);font-size:.9rem}
.cat-nav a:hover{border-color:var(--blue);color:var(--head)}
.cat{padding:28px 0 8px;scroll-margin-top:80px}
.cat h2{margin:0 0 14px;font-size:1.35rem}
.res-list{list-style:none;padding:0;margin:0;display:grid;gap:10px 28px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.res-list a{display:block;text-decoration:none;color:var(--text);padding:10px 0;border-bottom:1px solid var(--line)}
.res-list a:hover{color:var(--head)}
.res-list small{display:block;color:var(--muted);font-size:.85rem}
/* forms */
form .row{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media (max-width:640px){form .row{grid-template-columns:1fr}}
label{display:block;font-size:.92rem;color:var(--head);margin-bottom:6px;font-weight:600}
input,select,textarea{width:100%;background:var(--bg2);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:11px 12px;font:inherit;font-size:1rem}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue2);border-color:var(--blue2)}
textarea{min-height:150px;resize:vertical}
.field{margin-bottom:16px}
button.btn{cursor:pointer;font:inherit;font-weight:600}
.note{font-size:.88rem;color:var(--muted)}
.hp{position:absolute;left:-5000px}
/* footer */
.site-foot{padding:44px 0 30px;color:var(--muted);font-size:.92rem}
.foot-grid{display:grid;gap:28px;grid-template-columns:2fr 1fr 1fr}
@media (max-width:700px){.foot-grid{grid-template-columns:1fr}}
.site-foot h2{font-size:.95rem;margin:0 0 10px;color:var(--head)}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin:5px 0}
.site-foot a{color:var(--muted);text-decoration:none}
.site-foot a:hover{color:var(--blue)}
.copy{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;font-size:.85rem}
.big404{font-size:clamp(4rem,14vw,8rem);font-weight:800;color:var(--blue2);line-height:1;margin:0}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.g3{grid-template-columns:repeat(3,1fr)}@media (max-width:900px){.g3{grid-template-columns:repeat(2,1fr)}}@media (max-width:600px){.g3{grid-template-columns:1fr}}
.cat h2 a{color:var(--head);text-decoration:none}.cat h2 a:hover{color:var(--blue)}
.related{margin:40px 0 0;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
.related .h{margin:0 0 10px;font-weight:700;color:var(--head)}
.related ul{margin:0;padding-left:18px}.related li{margin:6px 0}
/* article images (v1.1) */
.hero-img{margin:0 0 28px}
.hero-img img{display:block;width:100%;height:auto;aspect-ratio:16/9;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
.side-img{float:right;width:240px;margin:6px 0 18px 28px}
.side-img img{display:block;width:100%;height:auto;aspect-ratio:360/700;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
.side-img figcaption{margin-top:8px;font-size:.8rem;line-height:1.4;color:var(--muted)}
.article h2,.article .answer{clear:none}
.article table,.article blockquote,.article .related,.article .end-cta{clear:both}
@media (max-width:640px){.side-img{float:none;width:min(220px,62%);margin:8px auto 22px}}
/* cards with thumbnails */
a.card.has-img{padding:0;overflow:hidden;display:flex;flex-direction:column}
.card .thumb{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:var(--bg2);border-bottom:1px solid var(--line)}
.card-b{padding:18px 20px 20px}
.mini-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));margin-bottom:8px}
.card.mini h3{font-size:.98rem;line-height:1.35;margin:0}
.card.mini .card-b{padding:14px 16px 16px}
/* v1.1 design review fixes */
.page-head{padding-left:20px;padding-right:20px}
.wrap.page-head{padding:48px 20px 8px}
.side-img.w210{width:210px}.side-img.w180{width:180px}
.side-img figcaption{text-wrap:balance}
.g1{grid-template-columns:1fr}
.g1 a.card.has-img{flex-direction:row;align-items:stretch}
.g1 a.card.has-img .thumb{width:46%;max-width:520px;border-bottom:0;border-right:1px solid var(--line)}
.g1 .card-b{align-self:center}
.g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:640px){.g1 a.card.has-img{flex-direction:column}.g1 a.card.has-img .thumb{width:100%;max-width:none;border-right:0;border-bottom:1px solid var(--line)}.g2{grid-template-columns:1fr}}
.hero-photo{padding:0;overflow:hidden;margin:0}
.hero-photo img{display:block;width:100%;height:auto;aspect-ratio:16/9}
.page-img{margin:8px 0 0}
.page-img img{display:block;width:100%;height:auto;aspect-ratio:16/9;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
.related .rel-grid{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
.related{background:transparent;border:0;padding:0}
.related .h{font-size:1.15rem}
.cat-tiles{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));margin:18px 0 8px}
.cat-tile{position:relative;display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;background:var(--panel)}
.cat-tile img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;opacity:.8;transition:opacity .15s}
.cat-tile span{display:block;padding:10px 12px;color:var(--head);font-weight:600;font-size:.95rem}
.cat-tile:hover{border-color:var(--blue2)}.cat-tile:hover img{opacity:1}
@media (max-width:640px){
 .mini-grid,.related .rel-grid{grid-template-columns:1fr;gap:10px}
 a.card.mini{flex-direction:row;align-items:center}
 a.card.mini .thumb{width:112px;flex:0 0 112px;border-bottom:0;border-right:1px solid var(--line)}
 a.card.mini .card-b{padding:10px 14px}
 .side-img figcaption{text-align:center}
 .cat-tiles{grid-template-columns:repeat(2,1fr)}
}