:root{--navy:#0b2545;--navy2:#13315c;--ink:#0f1b2d;--mute:#5b6b80;--line:#e3e8ef;--bg:#f6f8fb;--card:#fff;--green:#1f9d5c;--green2:#167a47;--gold:#c9a227;--r:16px;--sh:0 1px 2px rgba(15,27,45,.06),0 8px 24px rgba(15,27,45,.06);--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);overflow-x:hidden}
img,svg{max-width:100%}a{color:var(--green2)}a:hover{color:var(--navy)}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.01em;color:var(--navy);margin:0 0 .5em}
h1{font-size:clamp(2rem,5.2vw,3.4rem);font-weight:800}h2{font-size:clamp(1.5rem,3.2vw,2.1rem);font-weight:800}h3{font-size:1.2rem}
p{margin:0 0 1em}
/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(1.6) blur(12px);-webkit-backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.top.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(15,27,45,.06)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:800;font-size:1.1rem;line-height:1.05}
.brand small{display:block;font-weight:600;font-size:.68rem;color:var(--mute);letter-spacing:.04em;text-transform:uppercase}
.mark{width:36px;height:36px;border-radius:10px;background:var(--navy);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -3px 0 var(--green)}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;padding:8px 12px;border-radius:10px}
.nav a:hover,.nav a[aria-current=page]{background:#eef2f7;color:var(--navy)}
.nav a.btn{color:#fff;margin-left:6px}.nav a.btn:hover{background:var(--green2);color:#fff}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;cursor:pointer;color:var(--navy)}
@media (max-width:880px){.menu-btn{display:grid;place-items:center}
 .nav{position:absolute;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:10px 16px 16px;gap:2px;box-shadow:0 12px 24px rgba(15,27,45,.08);display:none}
 .nav.open{display:flex}.nav a{padding:12px}.nav a.btn{margin:6px 0 0;text-align:center}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:#fff;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:12px;border:0;cursor:pointer;font-size:1rem;transition:transform .15s,background .15s;min-height:44px}
.btn:hover{background:var(--green2);color:#fff;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--navy);box-shadow:inset 0 0 0 2px #cfd8e3}.btn.ghost:hover{box-shadow:inset 0 0 0 2px var(--navy);background:#fff}
.btn.light{background:#fff;color:var(--navy)}.btn.light:hover{background:#eef2f7;color:var(--navy)}
.btn.sm{padding:8px 14px;min-height:38px;font-size:.92rem}
/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 500px at 85% -10%,#1d4e89 0,transparent 60%),linear-gradient(160deg,#0b2545 0,#0e2f57 60%,#113a66 100%);color:#e8eef6;padding:56px 0 64px}
.hero h1{color:#fff}.hero .lead{font-size:1.15rem;color:#c9d6e6;max-width:36em}
.hero .eyebrow{color:#8fd6ae}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:800;color:var(--green2);margin-bottom:12px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;position:relative;z-index:1}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr;gap:28px}}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 26px}
.hero .btn.ghost{color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.35)}.hero .btn.ghost:hover{background:rgba(255,255,255,.08);box-shadow:inset 0 0 0 2px #fff}
.chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:6px 12px;border-radius:999px;font-size:.88rem;color:#dfe8f3}
.chips strong{color:#fff}
.sparkles{position:absolute;inset:0;pointer-events:none;opacity:.5}
.sparkles i{position:absolute;width:10px;height:10px;background:rgba(255,255,255,.18);transform:rotate(45deg);border-radius:2px;animation:float 14s linear infinite}
@keyframes float{from{transform:translateY(40px) rotate(45deg);opacity:0}15%{opacity:1}to{transform:translateY(-420px) rotate(225deg);opacity:0}}
@media (prefers-reduced-motion:reduce){.sparkles{display:none}*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* grade picker */
.picker{background:#fff;color:var(--ink);border-radius:20px;box-shadow:0 30px 60px rgba(0,0,0,.25);padding:18px}
.picker h2{font-size:1rem;color:var(--mute);text-transform:uppercase;letter-spacing:.08em;margin:4px 6px 12px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.tab{flex:1 1 auto;border:1px solid var(--line);background:#f4f6fa;color:var(--navy);font-weight:700;padding:10px 12px;border-radius:12px;cursor:pointer;font-size:.92rem;min-height:44px}
.tab[aria-selected=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
.tab:hover{border-color:var(--navy)}
.panel[hidden]{display:none}
.panel h3{margin:4px 6px 4px}.panel .sub{margin:0 6px 12px;color:var(--mute);font-size:.95rem}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:0 0 14px;padding:0}
.kv div{background:var(--bg);border-radius:12px;padding:10px 12px}
.kv dt{font-size:.75rem;color:var(--mute);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.kv dd{margin:2px 0 0;font-weight:800;color:var(--navy)}
.panel .more{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:0 6px 4px;flex-wrap:wrap}
.fade-in{animation:fadein .35s ease}@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
/* sections */
.sec{padding:64px 0}.sec.tight{padding:44px 0}.sec.white{background:#fff}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.sec-head p{color:var(--mute);margin:0;max-width:40em}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:920px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr}}
@media (max-width:600px){.g2,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.card h3{margin-bottom:.35em}.card p{color:var(--mute);margin:0}
a.card{text-decoration:none;color:inherit;display:block;transition:transform .18s,box-shadow .18s,border-color .18s}
a.card:hover{transform:translateY(-3px);border-color:#c9d4e2;box-shadow:0 14px 34px rgba(15,27,45,.1)}
.ico{width:42px;height:42px;border-radius:12px;background:#e8f6ee;color:var(--green2);display:grid;place-items:center;margin-bottom:12px}
.phase{counter-increment:ph}.phase .num{font-size:.8rem;font-weight:800;color:var(--green2);letter-spacing:.08em}
.policy{margin-top:20px;background:var(--navy);color:#dbe5f1;border-radius:var(--r);padding:22px 24px;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.policy h3{color:#fff;margin:0 0 4px}.policy p{margin:0;max-width:52em}.policy a{color:#9fe0bb}
.band{background:linear-gradient(120deg,#0b2545,#13315c);color:#dfe8f3;border-radius:24px;padding:36px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.band h2{color:#fff;margin:0 0 6px}.band p{margin:0;color:#c3d1e2}
.page-hero{background:#fff;border-bottom:1px solid var(--line);padding:40px 0 28px}
.page-hero h1{font-size:clamp(1.8rem,4.4vw,2.7rem)}.page-hero p.lead{color:var(--mute);font-size:1.1rem;max-width:44em;margin:0}
.crumbs{font-size:.88rem;color:var(--mute);margin-bottom:10px}.crumbs a{color:var(--mute)}
.note{color:var(--mute);font-size:.92rem}
/* product tabs */
.ptabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:18px;scrollbar-width:thin}
.ptabs .tab{flex:0 0 auto;background:#fff}
.pgrid{display:grid;grid-template-columns:1fr 1.15fr;gap:20px}
@media (max-width:860px){.pgrid{grid-template-columns:1fr}}
.spec{width:100%;border-collapse:collapse;font-size:.95rem}
.spec th,.spec td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{color:var(--mute);font-weight:600;width:42%}.spec td{font-weight:700;color:var(--navy)}
.ticks{list-style:none;padding:0;margin:0 0 16px}.ticks li{padding:6px 0 6px 28px;position:relative}
.ticks li:before{content:"";position:absolute;left:2px;top:12px;width:14px;height:8px;border-left:3px solid var(--green);border-bottom:3px solid var(--green);transform:rotate(-45deg)}
.badge{display:inline-block;background:#e8f6ee;color:var(--green2);font-weight:800;font-size:.75rem;padding:4px 10px;border-radius:999px;letter-spacing:.04em;text-transform:uppercase}
.badge.gold{background:#fbf3d9;color:#8a6d0b}
/* compare */
.cmp-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--sh)}
.cmp{width:100%;border-collapse:collapse;min-width:640px;font-size:.94rem}
.cmp th,.cmp td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.cmp thead th{background:#f4f6fa;color:var(--navy);position:sticky;top:0}
.cmp tbody th{color:var(--mute);font-weight:600}
.cmp td.hl,.cmp th.hl{background:#eef8f2}
.cmp .col-off{display:none}
.toggles{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px}
.toggles label{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-weight:600;font-size:.9rem;cursor:pointer;min-height:40px}
.moq strong{display:block;font-size:2rem;color:var(--navy);font-weight:900;line-height:1.1}
/* process */
.stepper{display:grid;grid-template-columns:260px 1fr;gap:20px}
@media (max-width:820px){.stepper{grid-template-columns:1fr}}
.phases{display:flex;flex-direction:column;gap:8px}
@media (max-width:820px){.phases{flex-direction:row;overflow-x:auto}}
.phases .tab{text-align:left;background:#fff;flex:0 0 auto}
.phases .tab small{display:block;font-weight:600;opacity:.75}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.steps li{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.steps .n{flex:0 0 38px;height:38px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.9rem}
.steps strong{display:block;color:var(--navy)}.steps span.d{color:var(--mute);font-size:.95rem}
.progress{height:6px;background:var(--line);border-radius:6px;overflow:hidden;margin:0 0 14px}.progress i{display:block;height:100%;background:var(--green);width:25%;transition:width .3s}
/* faq */
.faq-list{display:grid;gap:10px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px;transition:box-shadow .2s}
.faq-list details[open]{box-shadow:var(--sh)}
.faq-list summary{cursor:pointer;list-style:none;padding:16px 28px 16px 0;font-weight:700;color:var(--navy);position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";position:absolute;right:0;top:12px;font-size:1.5rem;color:var(--green2);transition:transform .2s}
.faq-list details[open] summary:after{transform:rotate(45deg)}
.faq-list details p{color:#334;margin:0 0 16px}
.filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.filter button{border:1px solid var(--line);background:#fff;padding:8px 14px;border-radius:999px;font-weight:700;color:var(--navy);cursor:pointer;min-height:40px}
.filter button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
/* news */
.acard .meta{font-size:.85rem;color:var(--mute);display:flex;gap:10px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.acard h3{font-size:1.08rem;line-height:1.3}
.acard[hidden]{display:none}
.tag{display:inline-block;background:#e8f6ee;color:var(--green2);font-weight:800;font-size:.72rem;padding:3px 9px;border-radius:999px;text-transform:uppercase;letter-spacing:.05em}
/* article */
.post-wrap{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;padding:36px 0 64px}
@media (max-width:980px){.post-wrap{grid-template-columns:1fr}.toc{display:none}}
.post{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(20px,4vw,44px);box-shadow:var(--sh);min-width:0}
.post h1{font-size:clamp(1.7rem,4vw,2.4rem)}
.post h2{font-size:1.4rem;margin-top:1.6em;scroll-margin-top:80px}
.post p,.post li{font-size:1.06rem;line-height:1.75;color:#24324a}
.post .meta{color:var(--mute);font-size:.92rem}
.takeaways{background:#f2f8f4;border:1px solid #d3ead9;border-radius:14px;padding:16px 20px;margin:20px 0}
.takeaways h2{margin-top:0;font-size:1.05rem;text-transform:uppercase;letter-spacing:.06em;color:var(--green2)}
.takeaways ul{margin:0;padding-left:20px}
.post .faq details{border:1px solid var(--line);border-radius:12px;padding:0 16px;margin:8px 0}
.post .faq summary{cursor:pointer;font-weight:700;padding:12px 0;color:var(--navy)}
.post .sources li{font-size:.92rem;word-break:break-word}
.toc{position:sticky;top:84px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;font-size:.92rem}
.toc h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mute)}
.toc ol{margin:0;padding-left:18px}.toc li{margin:6px 0}.toc a{color:var(--ink);text-decoration:none}.toc a.on{color:var(--green2);font-weight:700}
.readbar{position:fixed;top:0;left:0;height:3px;background:var(--green);width:0;z-index:60}
.promo{margin-top:32px;background:var(--navy);color:#dbe5f1;border-radius:16px;padding:22px}
.promo h2{color:#fff;margin-top:0}.promo a:not(.btn){color:#9fe0bb}
/* forms */
.rfq{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(18px,3vw,30px);box-shadow:var(--sh)}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}@media (max-width:640px){.f2{grid-template-columns:1fr}}
.rfq label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.92rem;color:var(--navy)}
.rfq input,.rfq select,.rfq textarea{font:inherit;font-weight:400;padding:12px;border:1px solid #cfd8e3;border-radius:10px;background:#fbfcfe;color:var(--ink);width:100%;min-height:46px}
.rfq input:focus,.rfq select:focus,.rfq textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(31,157,92,.18)}
.rfq textarea{margin-top:0}.rfq > label{margin-top:14px}
.rfq button{margin-top:18px}
.req{color:#c0392b}.hp{position:absolute;left:-9999px}
.formnote{color:var(--mute);font-size:.9rem;margin-top:10px}.status{font-weight:700;color:#b03a2e}
.thanks{background:#fff;border:1px solid #cfe9d8;border-radius:20px;padding:28px;box-shadow:var(--sh)}
.contact-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:24px;align-items:start}@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
.side .card+.card{margin-top:14px}
.dl{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
/* footer */
.foot{background:#071a33;color:#a9b8cc;padding:44px 0 90px;font-size:.93rem}
.foot a{color:#d6e2f0}.foot h3{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}
.foot ul{list-style:none;padding:0;margin:0}.foot li{margin:6px 0}
.foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px}@media (max-width:800px){.foot .cols{grid-template-columns:1fr 1fr}}
.foot .fine{border-top:1px solid #1b3456;margin-top:28px;padding-top:18px;font-size:.85rem}
.wa-float{position:fixed;right:16px;bottom:16px;z-index:40;display:flex;align-items:center;gap:8px;background:#25d366;color:#fff;text-decoration:none;font-weight:800;padding:12px 16px;border-radius:999px;box-shadow:0 10px 24px rgba(0,0,0,.2)}
.wa-float:hover{color:#fff;background:#1ebe5a}
@media (max-width:480px){.wa-float span{display:none}.wa-float{padding:14px}}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}
.foot .cols>div,.stepper>*,.pgrid>*,.contact-grid>*,.hero-grid>*{min-width:0}.foot a{overflow-wrap:anywhere}@media (max-width:560px){.foot .cols{grid-template-columns:1fr}}
@media (max-width:600px){.rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;margin:0 -20px;padding:4px 20px 14px;scrollbar-width:none}.rail::-webkit-scrollbar{display:none}.rail>*{flex:0 0 80%;scroll-snap-align:start}
.sec{padding:40px 0}.sec.tight{padding:28px 0}.hero{padding:32px 0 40px}.sec-head{margin-bottom:16px}.sec-head .btn{display:none}.band{padding:24px}.hero .lead{font-size:1.02rem}.cta{margin:18px 0 18px}.page-hero{padding:24px 0 20px}}
.rail-hint{display:none}@media (max-width:600px){.rail-hint{display:block;font-size:.8rem;color:var(--mute);margin:-6px 0 0}}
@media (max-width:600px){.rail{scroll-padding-left:20px}.picker .tabs{display:grid;grid-template-columns:1fr 1fr}.hero .cta .btn{flex:1 1 40%;padding:12px 10px}.kv dd{font-size:.95rem}}
.ptabs .tab[aria-selected=true],.phases .tab[aria-selected=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
.rfq label{display:block}.rfq label input,.rfq label select,.rfq label textarea{display:block;margin-top:6px}.f2{align-items:end}
.page-hero p.lead+p{margin-top:16px}