/* ============================================================
   MyTankCo — shared design system
   Navy #11264F · Amber #E8A33D · warm paper
   ============================================================ */
:root{
  --navy:#11264F; --navy-2:#1b3568; --navy-deep:#0c1a37;
  --amber:#E8A33D; --amber-dk:#cf8c27; --amber-soft:rgba(232,163,61,.14);
  --ink:#16202c; --muted:#5c6b7d; --line:#e6e2d8;
  --paper:#F7F4EE; --paper-2:#efeae0; --white:#ffffff;
  --radius:16px; --radius-lg:26px; --maxw:1200px;
  --shadow:0 24px 60px -20px rgba(17,38,79,.28);
  --shadow-sm:0 10px 30px -12px rgba(17,38,79,.20);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
  overflow-x:clip;width:100%;max-width:100%;
}
/* subtle paper grain */
body::before{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
h1,h2,h3,h4{font-family:"Bricolage Grotesque","Inter",sans-serif;line-height:1.04;letter-spacing:-.02em;margin:0;font-weight:700}
h1{font-size:clamp(2.6rem,6.4vw,5rem)}
h2{font-size:clamp(2rem,4.4vw,3.4rem);color:var(--navy)}
h3{font-size:1.3rem;color:var(--navy);letter-spacing:-.01em}
p{margin:0 0 1.1rem}
a{color:var(--navy);text-decoration:none}
img{max-width:100%;display:block;height:auto}
strong{font-weight:600;color:var(--ink)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:2}
.section{padding:clamp(72px,11vw,140px) 0}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.74rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--amber-dk);margin-bottom:1.3rem}
.eyebrow::before{content:"";width:26px;height:1.5px;background:var(--amber)}
.eyebrow.center{justify-content:center}
.lead{font-size:clamp(1.1rem,1.7vw,1.35rem);color:var(--muted);max-width:52ch;line-height:1.6}
.kicker-num{font-family:"Bricolage Grotesque";font-weight:800;font-size:.9rem;color:var(--amber-dk);letter-spacing:.05em}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:1rem;
  padding:15px 30px;border-radius:999px;cursor:pointer;border:0;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .25s;position:relative}
.btn svg{width:17px;height:17px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-amber{background:var(--amber);color:var(--navy)}
.btn-amber:hover{transform:translateY(-3px);box-shadow:0 16px 34px -10px rgba(232,163,61,.65)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8)}
.btn-outline{background:transparent;color:var(--navy);border:1.5px solid rgba(17,38,79,.22)}
.btn-outline:hover{border-color:var(--navy);transform:translateY(-3px)}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .4s var(--ease),box-shadow .4s var(--ease),backdrop-filter .4s}
.site-header.scrolled{background:rgba(247,244,238,.86);backdrop-filter:blur(14px) saturate(1.4);box-shadow:0 1px 0 rgba(17,38,79,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px}
.nav-logo{display:block}
.nav-logo img{height:42px;width:auto}
.nav-logo .logo-dark{display:none}
.site-header.scrolled .nav-logo .logo-light{display:none}
.site-header.scrolled .nav-logo .logo-dark{display:block}
.nav-links{display:flex;align-items:center;gap:38px;list-style:none;margin:0;padding:0}
.nav-links a{font-size:.96rem;font-weight:500;color:#fff;position:relative;padding:4px 0;transition:color .3s}
.site-header.scrolled .nav-links a{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--amber);transition:width .3s var(--ease)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--amber)}
.site-header.scrolled .nav-links a.active{color:var(--amber-dk)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;background:var(--navy);color:#fff!important;
  padding:11px 22px;border-radius:999px;font-weight:600;font-size:.92rem;transition:transform .3s var(--ease),box-shadow .3s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.nav-cta::after{display:none}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:10px;z-index:120}
.burger span{display:block;width:26px;height:2px;background:#fff;border-radius:2px;transition:transform .35s var(--ease),opacity .25s,background .3s}
.site-header.scrolled .burger span{background:var(--navy)}
body.menu-open .burger span{background:#fff!important}
body.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.mobile-menu{position:fixed;inset:0;z-index:110;background:var(--navy);
  display:flex;flex-direction:column;justify-content:center;padding:0 32px;
  clip-path:circle(0% at calc(100% - 44px) 44px);transition:clip-path .6s var(--ease);visibility:hidden}
body.menu-open .mobile-menu{clip-path:circle(150% at calc(100% - 44px) 44px);visibility:visible}
.mobile-menu a{color:#fff;font-family:"Bricolage Grotesque";font-weight:700;font-size:clamp(2rem,9vw,3rem);
  padding:10px 0;opacity:0;transform:translateY(20px);transition:opacity .4s,transform .4s}
body.menu-open .mobile-menu a{opacity:1;transform:translateY(0)}
body.menu-open .mobile-menu a:nth-child(1){transition-delay:.18s}
body.menu-open .mobile-menu a:nth-child(2){transition-delay:.25s}
body.menu-open .mobile-menu a:nth-child(3){transition-delay:.32s}
body.menu-open .mobile-menu a:nth-child(4){transition-delay:.39s}
body.menu-open .mobile-menu a:nth-child(5){transition-delay:.46s}
.mobile-menu .mm-contact{margin-top:34px;font-family:"Inter";font-size:1rem;font-weight:500;color:var(--amber)}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;
  background:var(--navy-deep);color:#fff;overflow:hidden;padding-bottom:clamp(60px,9vw,110px)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{position:absolute;inset:0;width:100%;height:115%;object-fit:cover;object-position:62% center;will-change:transform}
.hero-media::after{content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(12,26,55,.94) 0%,rgba(12,26,55,.74) 42%,rgba(12,26,55,.30) 72%,rgba(12,26,55,.55) 100%)}
.hero-dust{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero .wrap{z-index:3}
.hero-eyebrow{color:var(--amber);font-size:.78rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:10px;margin-bottom:1.6rem}
.hero-eyebrow::before{content:"";width:30px;height:1.5px;background:var(--amber)}
.hero h1{color:#fff;max-width:18ch;font-weight:800}
.hero h1 .amber{color:var(--amber);font-style:italic}
.hero .lead{color:#cdd9ec;max-width:44ch;margin-top:1.6rem}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-top:2.4rem}
.hero-trust{margin-top:3rem;display:flex;gap:34px;flex-wrap:wrap;font-size:.88rem;color:#a7b9d4;
  border-top:1px solid rgba(255,255,255,.14);padding-top:1.6rem;max-width:640px}
.hero-trust b{color:#fff;font-family:"Bricolage Grotesque";font-size:1.05rem;display:block}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  color:rgba(255,255,255,.5);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;display:flex;
  flex-direction:column;align-items:center;gap:8px}
.scroll-hint .line{width:1px;height:34px;background:linear-gradient(rgba(255,255,255,.6),transparent);animation:scrolldot 2s var(--ease) infinite}
@keyframes scrolldot{0%{transform:scaleY(0);transform-origin:top}40%{transform:scaleY(1);transform-origin:top}60%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---- marquee strip ---- */
.marquee{background:var(--navy);color:#fff;padding:18px 0;overflow:hidden;white-space:nowrap;border-top:1px solid rgba(255,255,255,.08)}
.marquee-track{display:inline-flex;gap:48px;align-items:center;will-change:transform}
.marquee span{font-family:"Bricolage Grotesque";font-weight:700;font-size:1rem;letter-spacing:.02em;color:#e7eefb}
.marquee .dot{color:var(--amber);font-size:1.2rem}

/* ============================================================
   reveal animation defaults (set by JS / fallback no-js)
   ============================================================ */
.reveal{opacity:0;transform:translateY(34px)}
.no-js .reveal{opacity:1;transform:none}

/* ---- intro / breakthrough split ---- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(40px,6vw,80px);align-items:center}
.split-media{position:relative}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);width:100%}
.split-media .badge{position:absolute;bottom:-22px;left:-22px;background:var(--amber);color:var(--navy);
  border-radius:18px;padding:18px 22px;box-shadow:var(--shadow-sm);max-width:200px}
.split-media .badge b{font-family:"Bricolage Grotesque";font-size:1.5rem;display:block;line-height:1}
.split-media .badge span{font-size:.82rem;font-weight:600}

/* ---- stats band ---- */
.statband{background:var(--navy);color:#fff;border-radius:0}
.statband .grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.statband .stat{text-align:left;border-left:2px solid rgba(232,163,61,.5);padding-left:18px}
.statband .stat .n{font-family:"Bricolage Grotesque";font-weight:800;font-size:clamp(2rem,4vw,3rem);color:#fff;line-height:1}
.statband .stat .l{font-size:.92rem;color:#b9c8de;margin-top:8px}

/* ---- feature cards ---- */
.feat-head{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:end;margin-bottom:54px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s;position:relative;overflow:hidden}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;
  background:radial-gradient(120% 120% at 0% 0%,rgba(232,163,61,.08),transparent 60%);opacity:0;transition:opacity .4s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::after{opacity:1}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--amber-soft);display:flex;align-items:center;
  justify-content:center;margin-bottom:18px;font-size:1.4rem}
.card h3{font-size:1.1rem;margin-bottom:.4em}
.card p{font-size:.93rem;color:var(--muted);margin:0;line-height:1.55}

/* ---- range / sizes ---- */
.sizes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.size{border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 30px;background:var(--white);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);position:relative;overflow:hidden}
.size:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.size .type{display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--amber-dk);background:var(--amber-soft);padding:5px 14px;border-radius:999px;margin-bottom:20px}
.size .cap{font-family:"Bricolage Grotesque";font-weight:800;font-size:3.4rem;color:var(--navy);line-height:.9}
.size .cap span{font-size:1.2rem;color:var(--muted);font-weight:600;margin-left:4px}
.size p{font-size:.94rem;color:var(--muted);margin:18px 0 0}

/* ============================================================
   ASSEMBLY — scroll-scrubbed pinned build
   ============================================================ */
.assembly{background:var(--navy-deep);color:#fff;position:relative}
.assembly-pin{height:100svh;display:flex;align-items:center;overflow:hidden}
.assembly-inner{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,5vw,70px);align-items:center;width:100%}
.assembly-copy .eyebrow{color:var(--amber)}
.assembly-copy h2{color:#fff;margin-bottom:1rem}
.assembly-copy .lead{color:#c4d2e8}
.assembly-steps{margin-top:30px;display:flex;flex-direction:column;gap:2px}
.astep{display:flex;gap:16px;align-items:baseline;padding:9px 0;opacity:.32;transition:opacity .4s var(--ease),transform .4s}
.astep.on{opacity:1}
.astep .sn{font-family:"Bricolage Grotesque";font-weight:800;color:var(--amber);font-size:.9rem;min-width:32px}
.astep .st{font-size:1rem;color:#e7eefb}
.astage{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/2;
  box-shadow:0 40px 80px -30px rgba(0,0,0,.7);background:#0a1730}
.astage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .45s var(--ease)}
.astage img.on{opacity:1}
.astage .progress{position:absolute;left:0;bottom:0;height:4px;background:var(--amber);width:0;z-index:3}
.astage .frame-label{position:absolute;top:16px;left:18px;z-index:3;background:rgba(12,26,55,.7);backdrop-filter:blur(6px);
  color:#fff;font-size:.78rem;font-weight:600;padding:6px 14px;border-radius:999px;letter-spacing:.02em}

/* ---- proof / heritage ---- */
.proof{background:var(--paper-2)}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:14px}
.qcard{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px}
.qcard .stars{color:var(--amber);letter-spacing:3px;font-size:1.05rem;margin-bottom:16px}
.qcard p{font-size:1.02rem;color:var(--ink);margin:0 0 16px;line-height:1.55}
.qcard .who{font-size:.86rem;color:var(--muted);font-weight:600;border-top:1px solid var(--line);padding-top:14px}

/* ============================================================
   CTA band
   ============================================================ */
.ctaband{background:var(--navy);color:#fff;text-align:center;position:relative;overflow:hidden}
.ctaband::before{content:"";position:absolute;inset:0;
  background:radial-gradient(60% 80% at 80% 20%,rgba(232,163,61,.18),transparent 60%)}
.ctaband h2{color:#fff;max-width:18ch;margin:0 auto 1.2rem}
.ctaband .lead{color:#c4d2e8;margin:0 auto 2rem}
.ctaband .hero-cta{justify-content:center}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(40px,6vw,72px);align-items:start}
.cinfo{margin-top:30px;display:flex;flex-direction:column;gap:4px}
.cinfo a,.cinfo div.ci{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  color:var(--ink);font-weight:500;font-size:1.05rem}
.cinfo a:hover{color:var(--amber-dk)}
.cinfo .ci-ico{width:42px;height:42px;border-radius:11px;background:var(--amber-soft);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.cinfo small{display:block;color:var(--muted);font-weight:400;font-size:.82rem}
form.enquiry{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(26px,4vw,42px);box-shadow:var(--shadow-sm)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--navy);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:14px 16px;border:1px solid var(--line);
  border-radius:12px;font-size:1rem;font-family:inherit;background:#fcfbf8;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(232,163,61,.18)}
.field textarea{min-height:120px;resize:vertical}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form.enquiry .btn-amber{width:100%;margin-top:8px;justify-content:center}
.hp{position:absolute;left:-9999px}

/* ---- page hero (about/contact) ---- */
.page-hero{background:var(--navy);color:#fff;padding:calc(84px + clamp(60px,9vw,110px)) 0 clamp(60px,9vw,100px);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 90% at 85% 10%,rgba(232,163,61,.16),transparent 60%)}
.page-hero h1{color:#fff;max-width:16ch}
.page-hero .lead{color:#cdd9ec;margin-top:1.4rem}
.page-hero .eyebrow{color:var(--amber)}

/* ---- about story ---- */
.story{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,80px);align-items:center}
.story.flip .story-media{order:2}
.story-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);width:100%}
.vals{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:10px}
.val{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.val .vn{font-family:"Bricolage Grotesque";font-weight:800;color:var(--amber-dk);font-size:1.6rem;margin-bottom:10px}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:var(--navy-deep);color:#9fb2cd;padding:70px 0 36px;position:relative;z-index:2}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-top img{height:30px;width:auto;margin-bottom:18px}
.footer-top p{font-size:.92rem;color:#9fb2cd;max-width:34ch}
.footer-col h4{color:#fff;font-family:"Inter";font-weight:600;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
.footer-col a{display:block;color:#9fb2cd;font-size:.95rem;padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:28px;font-size:.84rem}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:960px){
  .split,.contact-grid,.assembly-inner,.story,.story.flip .story-media,.feat-head{grid-template-columns:1fr}
  .story.flip .story-media{order:0}
  .grid,.proof-grid,.vals{grid-template-columns:1fr 1fr}
  .statband .grid4{grid-template-columns:1fr 1fr;gap:26px}
  .sizes{grid-template-columns:1fr}
  .assembly-pin{height:auto;padding:clamp(60px,10vw,90px) 0}
  .assembly-inner{gap:40px}
  .astep{opacity:1}
}
@media(max-width:680px){
  body{font-size:16px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .nav{height:62px}
  .nav-logo img{height:25px}
  .grid,.proof-grid,.vals,.frow{grid-template-columns:1fr}
  .statband .grid4{grid-template-columns:1fr 1fr;gap:22px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-col a{word-break:break-word}
  .hero{min-height:auto;align-items:flex-start;padding-top:96px;padding-bottom:60px}
  .hero h1{font-size:clamp(1.95rem,7.8vw,2.7rem)}
  .hero-eyebrow{margin-bottom:1.1rem}
  .split-media .badge{left:0;bottom:-16px}
  .scroll-hint{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1!important;transform:none!important}
}