:root{
  --navy:#0A1F38; --navy-2:#13304F; --ink:#1B2733; --muted:#4F5D6B;
  --accent:#1F5FA8; --accent-dark:#164A85; --sky:#8FB3DA;
  --band:#E3EAF2; --line:#C5D1DE; --line-soft:#E1E6EC; --white:#FFFFFF;
  --radius:6px; --pad:clamp(20px,4vw,40px); --sec:clamp(48px,6vw,76px); --max:1200px;
  --hdr:84px; --hdr-s:66px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Public Sans',system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:var(--white);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--accent)} a:hover{color:var(--accent-dark)}
img{max-width:100%;display:block}
h1,h2,h3{margin:0;color:var(--navy);line-height:1.15}
p{margin:0}
ul{margin:0}
.wrap{max-width:calc(var(--max) + 2*var(--pad));margin:0 auto;padding:0 var(--pad)}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700}
.h2{font-size:clamp(28px,3.4vw,38px);font-weight:800}
.lead{font-size:17px;line-height:1.7;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:12px 24px;border-radius:4px;font-weight:600;font-size:16px;text-decoration:none;border:0;cursor:pointer;transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(10,31,56,.25)}
.btn-ghost{border:2px solid #fff;color:#fff;padding:10px 22px}
.btn-ghost:hover{background:#fff;color:var(--navy)}
.btn-white{background:#fff;color:var(--navy);font-weight:700}
.btn-white:hover{color:var(--navy);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.2)}
.btn-outline{border:2px solid var(--navy);color:var(--navy);padding:10px 22px;background:transparent}
.btn-outline:hover{background:var(--navy);color:#fff}
.on-dark .btn-outline{border-color:#fff;color:#fff}
.on-dark .btn-outline:hover{background:#fff;color:var(--navy)}
.btn svg{transition:transform .2s ease}
.btn:hover svg{transform:translateX(4px)}
.more{margin-top:32px}

/* ---------- header (transparent over dark hero, solid when scrolled) ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;color:#fff;background:transparent;border-bottom:1px solid rgba(255,255,255,.18);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:background-color .35s,border-color .35s,color .35s;--mark-bg:#fff;--mark-fg:#0A1F38}
.site-header.is-scrolled{background:rgba(248,249,250,.94);border-bottom-color:#D6DCE0;color:#101F2B;--mark-bg:#0A1F38;--mark-fg:#fff}
.site-header .row{display:flex;align-items:center;justify-content:space-between;height:var(--hdr);transition:height .35s ease}
.site-header.is-scrolled .row{height:var(--hdr-s)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.logo:hover{color:inherit}
.logo svg{width:38px;height:38px;transition:width .35s,height .35s}
.site-header.is-scrolled .logo svg{width:32px;height:32px}
.logo span{font-size:26px;font-weight:800;letter-spacing:.06em;transition:font-size .35s}
.site-header.is-scrolled .logo span{font-size:22px}
.site-nav{display:flex;align-items:center;gap:30px;font-weight:500;font-size:15px}
.site-nav a{color:inherit;text-decoration:none;position:relative;padding:6px 0}
.site-nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.site-nav a:hover::after,.site-nav a[aria-current="page"]::after{transform:scaleX(1)}
.site-header .actions{display:flex;align-items:center;gap:12px}
.site-header .actions .btn{min-height:42px;padding:10px 20px;font-size:15px}
.burger{display:none;width:44px;height:44px;background:none;border:0;color:inherit;cursor:pointer;border-radius:4px;align-items:center;justify-content:center}

/* ---------- mobile drawer ---------- */
.drawer-shade{position:fixed;inset:0;background:rgba(5,15,28,.5);opacity:0;pointer-events:none;transition:opacity .3s;z-index:70}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);background:var(--navy);color:#fff;z-index:80;transform:translateX(100%);transition:transform .35s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;padding:24px 28px 32px}
.drawer .close{align-self:flex-end;width:44px;height:44px;background:none;border:0;color:#fff;cursor:pointer}
.drawer nav{display:flex;flex-direction:column;margin-top:12px}
.drawer nav a{color:#fff;text-decoration:none;font-size:20px;font-weight:600;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer nav a:hover{color:var(--sky)}
.drawer .btn{margin-top:24px}
.drawer .meta{margin-top:auto;font-size:14px;color:#C9D4E0;display:flex;flex-direction:column;gap:6px}
.drawer .meta a{color:#fff;text-decoration:none}
body.drawer-open .drawer{transform:none}
body.drawer-open .drawer-shade{opacity:1;pointer-events:auto}
body.drawer-open{overflow:hidden}

/* ---------- side chapter nav (home) ---------- */
.chap-nav{position:fixed;right:28px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;align-items:center;gap:14px;opacity:0;transition:opacity .4s}
.chap-nav.ready{opacity:1}
.chap-nav button{background:none;border:0;padding:2px 4px;cursor:pointer;font-family:inherit;font-size:11px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.55);transition:color .3s,font-size .3s}
.chap-nav button:hover{color:#fff}
.chap-nav button.on{font-size:13.5px;color:var(--sky)}
.chap-nav.light button{color:rgba(10,31,56,.45)}
.chap-nav.light button:hover{color:var(--navy)}
.chap-nav.light button.on{color:var(--accent)}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--navy);min-height:min(88vh,760px);display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-position:center;background-size:cover;transform:scale(1.08);animation:heroZoom 18s ease-out forwards}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,31,56,.95) 0%,rgba(10,31,56,.84) 45%,rgba(10,31,56,.35) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;padding-top:calc(var(--hdr) + 48px);padding-bottom:72px}
.hero-copy{max-width:680px;display:flex;flex-direction:column;gap:22px}
.hero .eyebrow,.page-hero .eyebrow{color:var(--sky)}
.hero h1{color:#fff;font-size:clamp(38px,5vw,60px);font-weight:800;letter-spacing:-.01em;line-height:1.06}
.hero h1 .w{display:inline-block;opacity:0;transform:translateY(24px);animation:wordIn .7s cubic-bezier(.2,.7,.2,1) forwards}
.hero p{font-size:clamp(17px,1.5vw,19px);line-height:1.6;color:#D3DCE6;max-width:580px}
.ctas{display:flex;gap:14px;flex-wrap:wrap}
.fade-in{opacity:0;transform:translateY(16px);animation:wordIn .8s cubic-bezier(.2,.7,.2,1) forwards}
@keyframes wordIn{to{opacity:1;transform:none}}
@keyframes heroZoom{to{transform:scale(1)}}

.page-hero{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.page-hero .hero-bg{animation-duration:14s}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,31,56,.96) 0%,rgba(10,31,56,.86) 55%,rgba(10,31,56,.55) 100%)}
.page-hero .wrap{position:relative;z-index:1;padding-top:calc(var(--hdr) + 56px);padding-bottom:56px;display:flex;flex-direction:column;gap:16px}
.page-hero h1{color:#fff;font-size:clamp(34px,4.4vw,52px);font-weight:800}
.page-hero p{font-size:18px;line-height:1.6;color:#D3DCE6;max-width:640px}
.crumbs{font-size:14px;color:#AFC0D2}
.crumbs a{color:#fff;text-decoration:none}
.crumbs a:hover{color:var(--sky)}

/* ---------- sections ---------- */
section{scroll-margin-top:var(--hdr-s)}
.sec{padding:var(--sec) 0}
.band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:var(--navy);color:#C9D4E0}
.dark h2,.dark h3{color:#fff}
.dark .eyebrow{color:var(--sky)}
.dark .lead,.dark p{color:#C9D4E0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.sec-head .t{display:flex;flex-direction:column;gap:12px;max-width:620px}
.sec-head .lead{max-width:440px}

.serve-row{display:flex;align-items:center;gap:40px}
.serve-row .label{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;flex-shrink:0;width:150px}
.serve-row ul{list-style:none;padding:0;flex:1;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.serve-row li{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;font-weight:600;font-size:15px}
.serve-row li svg{transition:transform .3s ease}
.serve-row li:hover svg{transform:translateY(-4px)}
.serve-row .more{margin-top:0;flex-shrink:0}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.card{position:relative;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:12px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(10,31,56,.12);border-color:var(--line)}
.card:hover::before{transform:scaleX(1)}
.card h3{font-size:20px;font-weight:700}
.card p{font-size:15px;line-height:1.6;color:var(--muted)}
.card ul{padding-left:18px;color:var(--muted);font-size:15px;line-height:1.8}
.why .item{display:flex;flex-direction:column;gap:12px}
.why h3{font-size:19px;font-weight:700}
.why .item p{font-size:15px;line-height:1.6}
.icon-box{width:50px;height:50px;border-radius:var(--radius);background:var(--navy);display:flex;align-items:center;justify-content:center;transition:background-color .25s ease,transform .25s ease;flex-shrink:0}
.dark .icon-box{background:var(--accent)}
.why .item:hover .icon-box{background:var(--accent);transform:rotate(-4deg) scale(1.05)}
.dark .why .item:hover .icon-box,.dark .item:hover .icon-box{background:#fff}
.dark .item:hover .icon-box svg{stroke:var(--navy)}
.step{background:var(--band);border-top:4px solid var(--navy);padding:28px;display:flex;flex-direction:column;gap:10px;transition:border-color .25s ease,transform .25s ease}
.band .step{background:#fff}
.step:hover{border-top-color:var(--accent);transform:translateY(-4px)}
.step .n{font-size:14px;font-weight:700;color:var(--accent)}
.step h3{font-size:21px;font-weight:700}
.step p{font-size:15px;line-height:1.6;color:var(--muted)}

.cta{background:var(--accent);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 0 55%,rgba(255,255,255,.08) 55% 70%,transparent 70%)}
.cta .wrap{position:relative;display:flex;justify-content:space-between;align-items:center;gap:32px;padding-top:48px;padding-bottom:48px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:clamp(26px,2.8vw,32px);font-weight:800}
.cta p{font-size:17px;color:#E4EDF7;margin-top:8px}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:center}
.split .copy{display:flex;flex-direction:column;gap:18px}
.photo{border-radius:var(--radius);overflow:hidden;aspect-ratio:3/2;background:var(--navy-2)}
.photo img{width:100%;height:100%;object-fit:cover;transition:transform .8s ease}
.photo:hover img{transform:scale(1.04)}
.facts{border:1px solid var(--line-soft);border-radius:var(--radius);padding:4px 24px;background:#fff}
.facts div{display:flex;padding:14px 0;border-bottom:1px solid #EEF1F4;gap:16px}
.facts div:last-child{border-bottom:0}
.facts dt{width:170px;color:var(--muted);font-size:15px;flex-shrink:0}
.facts dd{margin:0;font-size:16px;font-weight:600}

.cat-row{display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.2fr);gap:28px;padding:28px 0;border-bottom:1px solid var(--line-soft);align-items:start}
.cat-row:last-child{border-bottom:0}
.cat-row h3{font-size:22px;font-weight:700}
.cat-row p{font-size:16px;line-height:1.6;color:var(--muted);margin-top:8px}
.cat-row ul{columns:2;column-gap:28px;padding-left:18px;font-size:15px;line-height:1.9;color:var(--ink)}
.check{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.check li{display:flex;gap:12px;font-size:16px;line-height:1.5}
.check li svg{flex-shrink:0;margin-top:2px}
.info-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:8px}
.info-card .k{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700}
.info-card a{font-size:19px;font-weight:600;text-decoration:none}
.info-card .v{font-size:16px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#C9D4E0;font-size:14px}
.site-footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding-top:40px;padding-bottom:28px}
.site-footer .logo{color:#fff;--mark-bg:#fff;--mark-fg:#0A1F38}
.site-footer .logo span{font-size:20px}
.site-footer .logo svg{width:30px;height:30px}
.site-footer h4{margin:0 0 10px;color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{color:var(--sky)}
.site-footer .col{display:flex;flex-direction:column;gap:6px}
.site-footer .bottom{border-top:1px solid #22405F;padding-top:16px;padding-bottom:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.reveal.from-left{transform:translateX(-36px)}
.reveal.from-right{transform:translateX(36px)}
.reveal.in{opacity:1;transform:none}

@media (max-width:1240px){ .chap-nav{display:none} }
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .serve-row{flex-wrap:wrap}
  .serve-row ul{grid-template-columns:repeat(3,minmax(0,1fr));flex-basis:100%}
  .split{grid-template-columns:1fr}
  .cat-row{grid-template-columns:48px minmax(0,1fr)}
  .cat-row ul{grid-column:2}
}
@media (max-width:900px){
  .site-nav,.site-header .actions .btn{display:none}
  .burger{display:inline-flex}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .serve-row ul{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero::after,.page-hero::after{background:linear-gradient(180deg,rgba(10,31,56,.9) 0%,rgba(10,31,56,.84) 100%)}
  .facts div{flex-direction:column;gap:4px}
  .site-footer .top{grid-template-columns:1fr}
}
@media (max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .cat-row ul{columns:1}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .hero h1 .w,.fade-in,.reveal{opacity:1;transform:none}
  .hero-bg{transform:none}
  html{scroll-behavior:auto}
}