*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#0b1220; --muted:#5b6b7c; --muted-2:#8494a5; --line:#e6eaef; --line-2:#eef2f6;
  --bg:#ffffff; --bg-soft:#f6f8fb; --bg-soft-2:#f0f4f8;
  --brand:#0B5CD5; --brand-2:#0E9F9A; --brand-ink:#ffffff; --brand-tint:rgba(11,92,213,.10);
  --dark:#0a1521; --dark-2:#0f2033;
  --radius:16px; --radius-sm:10px; --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(11,18,32,.05),0 1px 3px rgba(11,18,32,.04);
  --shadow:0 6px 24px -8px rgba(11,18,32,.16),0 2px 8px rgba(11,18,32,.05);
  --shadow-lg:0 28px 60px -20px rgba(11,18,32,.28);
  --maxw:1180px;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.68;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:650;letter-spacing:.10em;text-transform:uppercase;color:var(--brand);background:var(--brand-tint);padding:6px 12px;border-radius:999px}
.eyebrow.on-dark{background:rgba(255,255,255,.10);color:#fff}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.022em;line-height:1.14;margin:0 0 .5em;font-weight:750}
h1{font-size:clamp(2.5rem,5.2vw,4rem);letter-spacing:-.03em}
h2{font-size:clamp(1.85rem,3.3vw,2.6rem)}
h3{font-size:1.2rem;line-height:1.3}
h4{font-size:1.02rem}
p{margin:0 0 1.05em}
.lead{font-size:clamp(1.08rem,1.55vw,1.3rem);color:var(--muted);max-width:760px;line-height:1.62}
section{padding:96px 0}
section.tight{padding:64px 0}
.sec-head{max-width:780px;margin-bottom:46px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:660px){.g2,.g3,.g4{grid-template-columns:1fr}section{padding:64px 0}}

/* header */
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17.5px;letter-spacing:-.02em;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:800;letter-spacing:-.03em}
.logo .mark svg{width:19px;height:19px}
nav.main{display:flex;align-items:center;gap:4px}
nav.main a{color:#31435a;font-size:14.8px;font-weight:520;padding:9px 13px;border-radius:8px}
nav.main a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
nav.main a.active{color:var(--ink);font-weight:650}
.nav-cta{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:9px;width:40px;height:38px;cursor:pointer;color:var(--ink)}
@media(max-width:980px){
  nav.main{display:none;position:absolute;left:0;right:0;top:70px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 16px 16px;gap:2px}
  nav.main.open{display:flex}
  nav.main a{padding:12px 10px}
  .burger{display:grid;place-items:center}
  .nav-cta .btn.ghost{display:none}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--brand);color:#fff;padding:13px 22px;border-radius:11px;font-weight:640;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.16s ease}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn svg{width:17px;height:17px}
.btn.lg{padding:15px 26px;font-size:16px}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--muted-2)}
.btn.on-dark{background:#fff;color:var(--dark)}
.btn.on-dark.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding:92px 0 84px}
.hero.photo{background:#0a1521}
.hero .bgphoto{position:absolute;inset:0;object-fit:cover;width:100%;height:100%;opacity:.34;filter:saturate(.85)}
.hero .veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,17,29,.96) 0%,rgba(6,17,29,.82) 42%,rgba(6,17,29,.42) 100%)}
.hero .glow{position:absolute;width:620px;height:620px;right:-160px;top:-220px;border-radius:50%;background:radial-gradient(circle,rgba(29,120,255,.42) 0%,transparent 66%);pointer-events:none}
.hero .wrap{position:relative;z-index:2}
.hero h1{color:#fff;max-width:15.5em}
.hero .lead{color:rgba(255,255,255,.82);max-width:640px}
.hero .eyebrow{background:rgba(255,255,255,.10);color:#fff}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-2{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
@media(max-width:980px){.hero-2{grid-template-columns:1fr;gap:34px}}
.hero-card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);padding:22px;backdrop-filter:blur(6px)}
.hero-card .row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.10);font-size:14.6px}
.hero-card .row:last-child{border-bottom:0}
.hero-card .row b{color:#fff;font-weight:620}
.hero-card .row span{color:rgba(255,255,255,.62)}
.hero-card .hd{display:flex;align-items:center;gap:9px;color:#fff;font-weight:640;font-size:14.6px;margin-bottom:6px}
.hero-card .dot{width:8px;height:8px;border-radius:50%;background:#0B5CD5;box-shadow:0 0 0 4px rgba(11,92,213,.10)}
.hero-strip{position:relative;z-index:2;margin-top:56px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
@media(max-width:820px){.hero-strip{grid-template-columns:repeat(2,1fr)}}
.hero-strip b{display:block;color:#fff;font-size:clamp(1.26rem,1.95vw,1.6rem);letter-spacing:-.02em;line-height:1.2}
.hero-strip span{color:rgba(255,255,255,.66);font-size:13.8px}

/* cards */
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.18s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d8e0e8}
.card p{margin:0;color:var(--muted);font-size:15.2px}
.card .ic{width:44px;height:44px;border-radius:12px;background:var(--brand-tint);color:var(--brand);display:grid;place-items:center;margin-bottom:16px}
.card .ic svg{width:22px;height:22px}
.card a.more{display:inline-flex;align-items:center;gap:7px;margin-top:auto;padding-top:16px;font-size:14.4px;font-weight:620;align-self:flex-start}
.card a.more svg{width:15px;height:15px;transition:.16s}
.card a.more:hover svg{transform:translateX(3px)}
.card.dark{background:var(--dark-2);border-color:rgba(255,255,255,.10)}
.card.dark h3{color:#fff}
.card.dark p{color:rgba(255,255,255,.72)}
.card.dark .ic{background:rgba(255,255,255,.10);color:#fff}

/* media rows */
.row2{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media(max-width:960px){.row2{grid-template-columns:1fr;gap:30px}}
.row2.rev .txt{order:2}
@media(max-width:960px){.row2.rev .txt{order:0}}
.shot{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:var(--bg-soft)}
.shot img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.shot.tall img{aspect-ratio:4/3}

/* dark band */
.dark-band{background:var(--dark);color:#fff}
.dark-band h2,.dark-band h3{color:#fff}
.dark-band .lead,.dark-band p{color:rgba(255,255,255,.76)}
.stat{text-align:left}
.stat b{display:block;font-size:clamp(2rem,3.4vw,2.7rem);letter-spacing:-.03em;color:#fff;line-height:1.1}
.stat span{color:rgba(255,255,255,.66);font-size:14.4px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
@media(max-width:960px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.steps{grid-template-columns:1fr}}
.step{border-top:2px solid var(--brand);padding-top:20px}
.step b{display:block;color:var(--ink);margin-bottom:7px;font-size:1.02rem}
.step p{color:var(--muted);font-size:15px;margin:0}
.step:before{counter-increment:s;content:"0" counter(s);display:block;font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--brand);margin-bottom:10px}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:15.2px;margin:18px 0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th,.tbl td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}
.tbl th{background:var(--bg-soft);font-weight:650;font-size:13.8px;letter-spacing:.02em;color:#33465c}
.tbl tr:last-child td{border-bottom:0}
/* mobile: let wide data tables scroll horizontally instead of breaking the layout */
@media(max-width:660px){.tbl{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}}

/* faq */
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);padding:0;margin-bottom:10px;background:#fff;overflow:hidden}
.faq summary{cursor:pointer;padding:17px 20px;font-weight:640;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:20px;color:var(--brand);font-weight:500;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq details p{padding:0 20px 18px;color:var(--muted);margin:0;font-size:15.4px}

/* note */
.note{border-left:3px solid var(--brand);background:var(--bg-soft);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:15.2px;color:#33465c}

/* cta */
.cta{background:linear-gradient(135deg,#0B5CD5 0%,#0E9F9A 100%);border-radius:var(--radius-lg);padding:52px;color:#fff;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta h2{color:#fff;margin:0 0 8px;font-size:clamp(1.6rem,2.6vw,2.15rem)}
.cta p{color:rgba(255,255,255,.86);margin:0;max-width:560px}

/* footer */
footer.site{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 30px;font-size:14.6px}
footer.site .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
@media(max-width:880px){footer.site .cols{grid-template-columns:1fr 1fr}}
@media(max-width:560px){footer.site .cols{grid-template-columns:1fr}}
footer.site h4,footer.site .ft-h{color:#fff;font-size:14.6px;margin:0 0 14px;letter-spacing:.01em;font-weight:750;line-height:1.14}
footer.site a{color:rgba(255,255,255,.72);display:block;padding:5px 0}
footer.site a:hover{color:#fff}
footer.site .brandrow{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:12px}
footer.site .fine{border-top:1px solid rgba(255,255,255,.10);margin-top:34px;padding-top:20px;color:rgba(255,255,255,.52);font-size:13.4px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between}

/* forms */
form.rfq{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:780px}
@media(max-width:660px){form.rfq{grid-template-columns:1fr}}
form.rfq .full{grid-column:1/-1}
form.rfq label{display:block;font-size:13.4px;font-weight:600;color:#33465c;margin-bottom:6px}
form.rfq input,form.rfq select,form.rfq textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);font:inherit;font-size:15.2px;background:#fff;color:var(--ink)}
form.rfq input:focus,form.rfq select:focus,form.rfq textarea:focus{outline:2px solid var(--brand-tint);border-color:var(--brand)}

/* article */
.article{max-width:760px}
.article h2{font-size:1.6rem;margin-top:2.1em}
.article h3{font-size:1.16rem;margin-top:1.7em}
.article .meta{color:var(--muted-2);font-size:14px;margin-bottom:10px}
.breadcrumb{font-size:13.6px;color:var(--muted-2);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}

/* reveal */
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---- editorial article header ---- */
.art-head{padding:54px 0 42px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--bg-soft) 0%,#fff 100%)}
.art-head .crumbs{font-size:13.6px;color:var(--muted-2);margin-bottom:18px}
.art-head .crumbs a{color:var(--muted)}
.t-h1{font-size:clamp(2.2rem,4.4vw,3.3rem);letter-spacing:-.03em;line-height:1.12;font-weight:750;margin:0 0 .5em;color:var(--ink)}
.hero .t-h1{color:#fff}
.byline{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;color:var(--muted-2);font-size:14px;margin-top:20px}
.byline b{color:#33465c;font-weight:600}
.byline .sep{color:var(--line-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0}
.chips a{display:inline-flex;align-items:center;gap:7px;font-size:13.4px;font-weight:600;color:#31435a;background:#fff;border:1px solid var(--line);padding:7px 13px;border-radius:999px;transition:.15s ease}
.chips a:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.chips a.on{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---- per-page spec strip ---- */
.specs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:28px 0 4px}
@media(max-width:760px){.specs{grid-template-columns:repeat(2,1fr)}}
.specs div{background:#fff;padding:18px 20px}
.specs b{display:block;font-size:1.14rem;letter-spacing:-.02em;color:var(--ink);line-height:1.24}
.specs span{font-size:13.2px;color:var(--muted);display:block;margin-top:3px}

/* ---- what-goes-wrong cards ---- */
.mistakes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:6px 0 0}
@media(max-width:860px){.mistakes{grid-template-columns:1fr}}
.mistakes .m{border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:16px 18px;background:#fff}
.mistakes .m b{display:block;margin-bottom:6px;font-size:.99rem;color:var(--ink)}
.mistakes .m p{margin:0;color:var(--muted);font-size:14.6px}

/* ---- table of contents ---- */
.toc{border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;background:var(--bg-soft);margin:0 0 34px}
.toc b{display:block;font-size:12.6px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.toc ol{margin:0;padding-left:20px;font-size:15px}
.toc li{padding:2px 0}
.toc a{display:block;padding:5px 2px;color:#31435a}
.toc a:hover{color:var(--brand)}

/* ---- author box ---- */
.author{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;background:#fff;margin-top:38px}
.author .av{flex:0 0 46px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px}
.author b{display:block;font-size:1rem}
.author p{margin:4px 0 0;font-size:14.6px;color:var(--muted)}

/* ---- blog cards ---- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:960px){.posts{grid-template-columns:repeat(2,1fr)}}
@media(max-width:660px){.posts{grid-template-columns:1fr}}
.pc{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.18s ease}
.pc:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d8e0e8}
.pc .ph{aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft)}
.pc .ph img{width:100%;height:100%;object-fit:cover}
.pc .bd{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.pc .cat{font-size:12.2px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand)}
.pc h3{margin:9px 0 8px;font-size:1.09rem;line-height:1.32}
.pc h3 a{color:var(--ink)}
.pc h3 a:hover{color:var(--brand);text-decoration:none}
.pc p{margin:0;color:var(--muted);font-size:14.6px}
.pc .foot{margin-top:auto;padding-top:14px;font-size:13.2px;color:var(--muted-2);display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* ---- blog chronological list ---- */
.plist{border-top:1px solid var(--line)}
.pitem{display:grid;grid-template-columns:140px 1fr auto;gap:22px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--line-2)}
@media(max-width:760px){.pitem{grid-template-columns:1fr;gap:6px}}
.pitem .d{font-size:13.4px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.pitem h3{margin:0 0 6px;font-size:1.06rem}
.pitem h3 a{color:var(--ink)}
.pitem h3 a:hover{color:var(--brand);text-decoration:none}
.pitem p{margin:0;color:var(--muted);font-size:14.6px}
.pitem .r{font-size:13.2px;color:var(--muted-2);white-space:nowrap}

/* ---- related reading ---- */
.relread{border-top:1px solid var(--line);margin-top:46px;padding-top:26px}
.relread h4,.relread .relread-h{font-size:12.6px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;font-weight:750;line-height:1.14}
.relread ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px 26px}
@media(max-width:660px){.relread ul{grid-template-columns:1fr}}
.relread li{display:flex;gap:9px;align-items:flex-start;font-size:15px}
.relread li svg{width:16px;height:16px;flex:0 0 16px;margin-top:4px;color:var(--brand)}

/* ---- pager ---- */
.pager{display:flex;justify-content:space-between;gap:18px;margin-top:30px;flex-wrap:wrap}
.pager a{font-size:14.6px;font-weight:600}

/* ---- article figures ---- */
.fig{margin:30px 0}
.fig img{width:100%;height:auto;border-radius:14px;display:block;border:1px solid var(--line)}
.fig figcaption{font-size:13.4px;color:var(--muted-2);margin-top:9px;line-height:1.55}
@media(max-width:660px){.fig{margin:24px 0}}