:root{--navy:#0b2a4a;--navy2:#123b66;--red:#e0142d;--red2:#ff5a3c;--gold:#f7b733;--sky:#eef6fb;--ink:#162f3d;--muted:#56707d;--line:#d8e5eb;--w:1140px;--r:16px;--shadow:0 12px 32px rgba(8,39,57,.10)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy2)}
h1,h2,h3{line-height:1.15;font-weight:800;color:var(--navy);margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,58px)}
h2{font-size:clamp(28px,3.4vw,42px)}
h3{font-size:clamp(20px,2vw,24px)}
p{margin:0 0 1em}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);padding:8px 12px;z-index:99}
.skip:focus{left:8px}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex}
.mb-logo svg{height:44px;width:auto;display:block}
.mb-logo-foot svg{height:40px;margin-bottom:14px}
.nav{display:flex;align-items:center;gap:8px}
.menu{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.menu a{display:block;padding:10px 12px;border-radius:8px;text-decoration:none;font-weight:600;color:var(--navy);font-size:15px}
.menu a:hover,.menu .current-menu-item>a{background:var(--sky)}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;padding:8px;cursor:pointer}
.nav-toggle span{display:block;height:3px;background:var(--navy);margin:6px 0;border-radius:2px;transition:.2s}
@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .menu{flex-direction:column}
  .menu a{padding:12px}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:10px;font-weight:800;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:16px;transition:transform .15s,box-shadow .15s;line-height:1.2}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(8,39,57,.18)}
.btn-lg{min-height:56px;padding:14px 28px;font-size:18px}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-red{background:var(--red);color:#fff}
.btn-call{background:var(--navy);color:#fff;white-space:nowrap}
.btn-outline{background:#fff;color:var(--navy);border-color:var(--navy)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.link{color:var(--navy2);font-weight:600}

/* hero */
.hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--navy)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;animation:kb 24s ease-in-out infinite alternate;opacity:.55}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,29,42,.92) 0%,rgba(11,42,74,.72) 55%,rgba(11,42,74,.25) 100%);z-index:1}
@keyframes kb{from{transform:scale(1)}to{transform:scale(1.08)}}
.hero-inner{position:relative;z-index:2;padding:80px 20px;max-width:var(--w);width:100%}
.hero h1{color:#fff;max-width:760px}
.hero .hl{color:var(--gold)}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);border:1px solid rgba(255,255,255,.3);padding:6px 12px;border-radius:999px;margin-bottom:18px}
.hero .lead{font-size:clamp(18px,1.7vw,21px);max-width:640px;color:#e6f1f8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 36px}
.hero-stats{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:12px 36px}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:clamp(26px,3vw,38px);color:var(--gold);font-weight:800;line-height:1}
.hero-stats span{font-size:13px;color:#cfe0eb}
.float-blimp{position:absolute;right:3%;top:10%;width:min(26vw,360px);z-index:2;animation:floaty 7s ease-in-out infinite;filter:drop-shadow(0 30px 40px rgba(0,0,0,.45));pointer-events:none}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-22px) rotate(1.5deg)}}
@media (max-width:1100px){.float-blimp{display:none}}
.hero h1{max-width:680px}
@media (prefers-reduced-motion:reduce){.hero-bg,.float-blimp,.reveal{animation:none!important;transition:none!important}}

/* page hero */
.page-hero{position:relative;background:var(--navy);color:#fff;min-height:320px;display:flex;align-items:flex-end;overflow:hidden}
.page-hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,29,42,.2),rgba(7,29,42,.9));z-index:1}
.page-hero-inner{position:relative;z-index:2;padding:70px 20px 40px;width:100%;max-width:var(--w)}
.page-hero h1{color:#fff}
.page-hero .lead{font-size:19px;max-width:700px;color:#dbe9f2;margin:0}

/* content sections */
.page-body{padding:40px 20px 20px}
.page-body>h2{margin-top:1.4em}
.section{padding:56px 0}
.section-alt{background:var(--sky)}
.section-dark{background:var(--navy);color:#dbe9f2}
.section-dark h2,.section-dark h3{color:#fff}
.section .wrap{max-width:var(--w)}
.intro{max-width:760px;font-size:19px}
.lead{font-size:19px;color:var(--muted)}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.split.rev>:first-child{order:2}
@media (max-width:820px){.split{grid-template-columns:1fr}.split.rev>:first-child{order:0}}
.fig{margin:0;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.fig figcaption{font-size:13px;color:var(--muted);padding:8px 12px;background:#fff}
.mb-img{width:100%;height:auto}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:24px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.card .big{font-size:40px;font-weight:800;color:var(--red);line-height:1;margin-bottom:8px}
.card h3{margin-bottom:6px}
.card p{margin:0;color:var(--muted)}
.steps{counter-reset:s;list-style:none;padding:0;margin:24px 0;display:grid;gap:14px}
.steps li{position:relative;padding:16px 16px 16px 66px;background:#fff;border:1px solid var(--line);border-radius:12px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:16px;top:14px;width:36px;height:36px;border-radius:50%;background:var(--gold);color:var(--navy);display:grid;place-items:center;font-weight:800}
.checks{list-style:none;padding:0;margin:16px 0;display:grid;gap:8px}
.checks li{padding-left:30px;position:relative}
.checks li::before{content:"✓";position:absolute;left:0;top:0;color:var(--red);font-weight:800}
.quote{border-left:5px solid var(--gold);padding:14px 20px;background:var(--sky);border-radius:0 12px 12px 0;font-size:19px;margin:24px 0}
.quote cite{display:block;font-style:normal;font-size:14px;color:var(--muted);margin-top:6px}
.uses{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin:24px 0}
.use{background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .2s}
.use:hover{transform:translateY(-4px)}
.use img{aspect-ratio:4/3;object-fit:cover;width:100%}
.use-body{padding:18px 20px 22px}
.use-body p{margin:0;color:var(--muted);font-size:15px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* tables */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin:20px 0 30px;background:#fff}
.price-table{width:100%;min-width:680px;border-collapse:collapse;font-size:15px}
.price-table th{background:var(--navy);color:#fff;text-align:left;padding:12px;font-size:13px;white-space:nowrap}
.price-table td{padding:12px;border-bottom:1px solid var(--line)}
.price-table tbody tr:nth-child(even){background:#f8fbfc}
.price-table td:first-child{font-weight:800;color:var(--navy);white-space:nowrap}
.price-table tr:last-child td{border-bottom:0}

/* FAQ */
.faq{display:grid;gap:10px;margin:20px 0}
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{margin:0;font-size:18px}
.faq-plus{width:26px;height:26px;border-radius:50%;background:var(--sky);position:relative;flex:none}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--navy);left:50%;top:50%;transform:translate(-50%,-50%)}
.faq-plus::before{width:12px;height:2px}.faq-plus::after{width:2px;height:12px;transition:.2s}
.faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{padding:0 20px 18px;color:var(--ink)}
.faq-a p{margin:0}

/* segmented control */
.seg{display:inline-flex;flex-wrap:wrap;gap:6px;background:var(--sky);padding:6px;border-radius:12px}
.seg button,.seg-opt span{padding:9px 14px;border-radius:8px;border:0;background:transparent;font-weight:700;cursor:pointer;color:var(--navy);font-family:inherit;font-size:15px;display:inline-block}
.seg button[aria-selected="true"],.seg-opt input:checked+span{background:var(--navy);color:#fff}
.seg-opt input{position:absolute;opacity:0;width:0;height:0}
.seg-opt{position:relative}
.seg-opt input:focus-visible+span{outline:3px solid var(--gold)}

/* sizer */
.sizer{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow);margin:24px 0}
.sizer-head{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.sizer-label{font-weight:800;color:var(--navy);font-size:20px}
.sizer input[type=range]{width:100%;margin:14px 0 6px;accent-color:var(--red);height:32px}
.sizer-stage{background:linear-gradient(180deg,#dff0fb 0%,#f6fbfe 100%);border-radius:12px;overflow:hidden;margin:10px 0}
.sizer-svg{width:100%;height:auto;display:block}
.sizer-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:14px 0}
.sizer-facts div{background:var(--sky);border-radius:10px;padding:10px 12px}
.sizer-facts dt{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.sizer-facts dd{margin:0;font-weight:800;color:var(--navy);font-size:20px}
.sizer-note{font-size:14px;color:var(--muted)}

/* quote builder */
.qb{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;margin:24px 0;align-items:start}
@media (max-width:900px){.qb{grid-template-columns:1fr}}
.qb-step{border:1px solid var(--line);border-radius:var(--r);padding:20px 22px 22px;margin:0 0 16px;background:#fff;box-shadow:var(--shadow)}
.qb-step legend{font-weight:800;color:var(--navy);font-size:18px;display:flex;align-items:center;gap:10px;padding:0 8px}
.qb-step legend .n{width:30px;height:30px;border-radius:50%;background:var(--gold);display:grid;place-items:center;font-size:15px}
.qb-sizes{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.qb-size{border:2px solid var(--line);border-radius:12px;padding:12px;background:#fff;cursor:pointer;text-align:left;font-family:inherit;transition:.15s}
.qb-size strong{display:block;font-size:20px;color:var(--navy)}
.qb-size span{font-size:13px;color:var(--muted)}
.qb-size[aria-pressed="true"]{border-color:var(--red);background:#fff4f2;box-shadow:0 0 0 3px rgba(224,20,45,.12)}
.qb-size em{display:block;font-style:normal;font-size:11px;color:var(--red);font-weight:800;text-transform:uppercase}
.chk{display:flex;align-items:center;gap:10px;margin:8px 0;font-weight:600}
.chk input{width:20px;height:20px;accent-color:var(--red)}
.qb-inline{display:flex;flex-wrap:wrap;gap:16px;margin:10px 0 6px;padding-left:30px}
.qb-inline label{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px}
.qb-inline input[type=number]{width:70px;padding:8px;border:1px solid var(--line);border-radius:8px;font-size:16px}
.qb-text{display:block;font-weight:600;margin-top:12px}
.qb-text input{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:18px;text-transform:uppercase;font-weight:800;letter-spacing:.04em}
.qb-summary{position:sticky;top:90px;background:var(--navy);color:#dbe9f2;border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.qb-summary h3{color:#fff;margin:10px 0 8px}
.qb-preview{background:linear-gradient(180deg,#5db4e6,#bfe3f7);border-radius:12px;padding:16px}
.qb-blimp{width:100%;height:auto;display:block;filter:drop-shadow(0 12px 16px rgba(0,0,0,.25))}
.qb-lines{list-style:none;margin:0;padding:0;font-size:15px}
.qb-lines li{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px dashed rgba(255,255,255,.18)}
.qb-total{display:flex;justify-content:space-between;align-items:baseline;margin:14px 0 4px;font-weight:800}
.qb-total strong{font-size:38px;color:var(--gold)}
.qb-helium{font-size:14px;color:#bcd5e5;margin:0 0 14px}
.qb-actions{display:grid;gap:10px}
.qb-actions .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.qb-actions .link{color:#cfe3f0;font-size:14px;text-align:center}
.qb-fine{font-size:12.5px;color:#9fbccd;margin:14px 0 0}

/* contact */
.cform{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);margin:20px 0}
.cform label{display:block;font-weight:700;color:var(--navy);margin-bottom:14px}
.cform input,.cform textarea{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:16px;font-family:inherit}
.cform input:focus,.cform textarea:focus{outline:3px solid rgba(247,183,51,.5);border-color:var(--gold)}
.cform-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media (max-width:640px){.cform-grid{grid-template-columns:1fr}}
.hp{position:absolute;left:-9999px}
.notice{padding:14px 18px;border-radius:12px;margin:16px 0;font-weight:600}
.notice.ok{background:#e6f8ec;color:#145a2c}
.notice.bad{background:#fdecec;color:#8a1020}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:start}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}
.contact-side .card{margin-bottom:16px}
.contact-side a{font-weight:800;font-size:20px;text-decoration:none}

/* cta band + footer */
.cta-band{background:linear-gradient(120deg,var(--red) 0%,var(--red2) 100%);color:#fff;padding:52px 0}
.cta-row{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta-band h2{color:#fff;margin-bottom:6px}
.cta-band p{margin:0;color:#ffe9e5}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-outline{background:transparent;color:#fff;border-color:#fff}
.site-foot{background:#071d2a;color:#b9cbd7;padding:50px 0 20px;font-size:15px}
.site-foot a{color:#fff}
.site-foot h3{color:#fff;font-size:16px;text-transform:uppercase;letter-spacing:.08em}
.foot-grid{display:grid;grid-template-columns:1.3fr .7fr 1fr;gap:36px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr}}
.foot-menu{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.foot-menu a{text-decoration:none}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:18px;font-size:13px}