```css
/* =========================================================
   SolarFireTruck.com — site.css
   Dual-use EV / V2L wildfire readiness concept
   ========================================================= */

:root{
  --ink:#101827;
  --ink-2:#1f2937;
  --muted:#64748b;
  --paper:#fffdf7;
  --soft:#f3f7fb;
  --line:rgba(15,23,42,.14);

  --navy:#07182f;
  --navy-2:#0b2447;
  --blue:#1463a8;
  --cyan:#27b8ff;
  --gold:#f8b72a;
  --orange:#f97316;
  --red:#c92a1e;
  --green:#2f9e44;

  --shadow:0 24px 70px rgba(4,12,28,.22);
  --shadow-soft:0 14px 40px rgba(4,12,28,.12);
  --radius:24px;
  --radius-sm:14px;

  --max:1180px;
}

/* ---------------- Base ---------------- */

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at top left, rgba(248,183,42,.18), transparent 34rem),
    linear-gradient(180deg, #fffdf7 0%, #f6f8fb 42%, #eef4fb 100%);
  line-height:1.6;
}

img{
  max-width:100%;
  height:auto;
  display:block;
}

a{
  color:inherit;
  text-decoration:none;
}

p{
  margin:0 0 1rem;
}

strong{
  color:var(--ink);
}

.container{
  width:min(var(--max), calc(100% - 36px));
  margin-inline:auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:12px;
  background:#fff;
  color:#000;
  padding:.7rem 1rem;
  border-radius:10px;
  z-index:9999;
}

.skip-link:focus{
  left:12px;
}

/* ---------------- Header / Nav ---------------- */

.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(7,24,47,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 12px 34px rgba(0,0,0,.22);
}

.nav-wrap{
  width:min(1280px, calc(100% - 24px));
  margin-inline:auto;
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}

.brand{
  display:flex;
  align-items:center;
  gap:.8rem;
  color:#fff;
  min-width:0;
}

.brand-mark{
  width:46px;
  height:46px;
  border-radius:14px;
  display:grid;
  place-items:center;
  background:
    radial-gradient(circle at 30% 20%, #fff7a8, transparent 34%),
    linear-gradient(135deg, var(--gold), var(--orange), var(--red));
  box-shadow:0 0 0 3px rgba(255,255,255,.12);
  font-weight:900;
  color:#07182f;
}

.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.05;
}

.brand-title{
  font-size:1.18rem;
  font-weight:950;
  letter-spacing:.02em;
  text-transform:uppercase;
}

.brand-title span{
  color:var(--gold);
}

.brand-subtitle{
  margin-top:.2rem;
  font-size:.78rem;
  color:rgba(255,255,255,.76);
  letter-spacing:.06em;
  text-transform:uppercase;
}

.nav-toggle{
  display:none;
}

.nav-button{
  display:none;
  width:46px;
  height:42px;
  border:1px solid rgba(255,255,255,.25);
  border-radius:12px;
  background:rgba(255,255,255,.08);
  cursor:pointer;
  position:relative;
}

.nav-button span,
.nav-button::before,
.nav-button::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  height:2px;
  background:#fff;
  border-radius:2px;
  transition:.2s ease;
}

.nav-button span{
  top:20px;
}

.nav-button::before{
  top:13px;
}

.nav-button::after{
  bottom:13px;
}

.nav-menu{
  display:flex;
  align-items:center;
  gap:.2rem;
  list-style:none;
  padding:0;
  margin:0;
}

.nav-menu a{
  display:block;
  color:rgba(255,255,255,.86);
  font-weight:800;
  font-size:.91rem;
  padding:.78rem .82rem;
  border-radius:999px;
}

.nav-menu a:hover,
.nav-menu a:focus{
  color:#fff;
  background:rgba(255,255,255,.11);
  outline:none;
}

.nav-menu .nav-cta a{
  background:linear-gradient(135deg, var(--gold), var(--orange));
  color:#07182f;
  box-shadow:0 10px 28px rgba(248,183,42,.25);
}

/* ---------------- Hero ---------------- */

.hero{
  position:relative;
  min-height:680px;
  display:grid;
  align-items:end;
  color:#fff;
  overflow:hidden;
  background:#07182f;
}

.hero.hero-small{
  min-height:440px;
}

.hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  opacity:.9;
}

.hero.top .hero-img,
.hero-img.top{
  object-position:center top;
}

.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg, rgba(3,9,20,.88) 0%, rgba(3,9,20,.58) 42%, rgba(3,9,20,.22) 100%),
    linear-gradient(0deg, rgba(3,9,20,.92) 0%, rgba(3,9,20,.15) 45%, rgba(3,9,20,.42) 100%);
}

.hero-content{
  position:relative;
  z-index:2;
  width:min(var(--max), calc(100% - 36px));
  margin:0 auto;
  padding:7rem 0 5rem;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.45rem .8rem;
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;
  background:rgba(255,255,255,.11);
  color:#fff5cf;
  font-weight:900;
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.09em;
  backdrop-filter:blur(10px);
}

.eyebrow.dark{
  color:var(--red);
  border-color:rgba(201,42,30,.22);
  background:rgba(201,42,30,.08);
}

.hero h1,
.page-title{
  max-width:930px;
  margin:.95rem 0 1rem;
  font-size:clamp(3rem, 7.2vw, 6.7rem);
  line-height:.9;
  letter-spacing:-.065em;
  font-weight:1000;
  text-transform:uppercase;
}

.hero h1 .gold,
.page-title .gold{
  color:var(--gold);
}

.hero-lede{
  max-width:780px;
  font-size:clamp(1.12rem, 2.2vw, 1.55rem);
  line-height:1.35;
  color:rgba(255,255,255,.9);
  font-weight:650;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
  margin-top:1.6rem;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55rem;
  min-height:48px;
  padding:.78rem 1.1rem;
  border-radius:999px;
  font-weight:900;
  border:1px solid transparent;
  transition:.18s ease;
}

.btn-primary{
  color:#07182f;
  background:linear-gradient(135deg, var(--gold), var(--orange));
  box-shadow:0 14px 34px rgba(248,183,42,.25);
}

.btn-secondary{
  color:#fff;
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.28);
}

.btn-light{
  color:var(--navy);
  background:#fff;
  box-shadow:var(--shadow-soft);
}

.btn:hover{
  transform:translateY(-2px);
}

.hero-badges{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:.75rem;
  margin-top:2.2rem;
  max-width:940px;
}

.hero-badge{
  background:rgba(255,255,255,.11);
  border:1px solid rgba(255,255,255,.18);
  border-radius:18px;
  padding:.9rem;
  backdrop-filter:blur(12px);
}

.hero-badge b{
  display:block;
  color:#fff;
  font-size:.94rem;
  text-transform:uppercase;
  line-height:1.15;
}

.hero-badge span{
  display:block;
  margin-top:.25rem;
  color:rgba(255,255,255,.72);
  font-size:.84rem;
}

/* ---------------- Sections ---------------- */

main{
  overflow:hidden;
}

.section{
  padding:5rem 0;
}

.section-tight{
  padding:3.5rem 0;
}

.section-dark{
  color:#fff;
  background:
    radial-gradient(circle at 20% 0%, rgba(248,183,42,.18), transparent 30rem),
    linear-gradient(135deg, #061226, #0a1e3b 58%, #081525);
}

.section-fire{
  color:#fff;
  background:
    linear-gradient(90deg, rgba(7,24,47,.96), rgba(116,22,14,.86)),
    url("images/solarfiretruck-electric-postal-truck-under-smoke-sky.jpg") center/cover;
  background-blend-mode:multiply;
}

.section-head{
  max-width:840px;
  margin:0 0 2rem;
}

.section-head.center{
  text-align:center;
  margin-inline:auto;
}

.section-kicker{
  color:var(--red);
  text-transform:uppercase;
  letter-spacing:.1em;
  font-weight:950;
  font-size:.82rem;
  margin-bottom:.55rem;
}

.section-dark .section-kicker,
.section-fire .section-kicker{
  color:var(--gold);
}

.section-title{
  margin:0 0 .9rem;
  font-size:clamp(2.15rem, 5vw, 4.1rem);
  line-height:.95;
  letter-spacing:-.045em;
  font-weight:1000;
}

.section-title span{
  color:var(--gold);
}

.section-lede{
  font-size:1.12rem;
  color:var(--muted);
  max-width:820px;
}

.section-dark .section-lede,
.section-fire .section-lede{
  color:rgba(255,255,255,.78);
}

/* ---------------- Cards / Grids ---------------- */

.grid{
  display:grid;
  gap:1.15rem;
}

.grid-2{
  grid-template-columns:repeat(2, minmax(0,1fr));
}

.grid-3{
  grid-template-columns:repeat(3, minmax(0,1fr));
}

.grid-4{
  grid-template-columns:repeat(4, minmax(0,1fr));
}

.card{
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1.35rem;
  box-shadow:var(--shadow-soft);
}

.card.dark{
  color:#fff;
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.14);
}

.card h2,
.card h3{
  margin:.2rem 0 .55rem;
  line-height:1.05;
  letter-spacing:-.025em;
}

.card h3{
  font-size:1.35rem;
}

.card p{
  color:var(--muted);
}

.card.dark p{
  color:rgba(255,255,255,.72);
}

.icon{
  width:52px;
  height:52px;
  border-radius:16px;
  display:grid;
  place-items:center;
  color:#07182f;
  background:linear-gradient(135deg, var(--gold), var(--orange));
  font-size:1.45rem;
  font-weight:1000;
  margin-bottom:1rem;
}

.feature-card{
  overflow:hidden;
  padding:0;
}

.feature-card img{
  width:100%;
  height:230px;
  object-fit:cover;
}

.feature-card .feature-body{
  padding:1.25rem;
}

.feature-card h3{
  margin:0 0 .45rem;
  font-size:1.35rem;
}

.feature-card p{
  margin:0;
}

/* ---------------- Split Layouts ---------------- */

.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:2rem;
  align-items:center;
}

.media-frame{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  background:#07182f;
}

.media-frame img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}

.media-frame.tall img{
  aspect-ratio:4/5;
}

.media-caption{
  position:absolute;
  left:1rem;
  right:1rem;
  bottom:1rem;
  padding:.85rem 1rem;
  border-radius:18px;
  color:#fff;
  background:rgba(7,24,47,.72);
  border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(10px);
  font-weight:800;
}

/* ---------------- Callout / Warnings ---------------- */

.callout{
  border-radius:var(--radius);
  padding:1.5rem;
  border:1px solid rgba(248,183,42,.34);
  background:
    linear-gradient(135deg, rgba(248,183,42,.16), rgba(255,255,255,.8));
  box-shadow:var(--shadow-soft);
}

.callout h3{
  margin:0 0 .45rem;
  font-size:1.55rem;
}

.callout p:last-child{
  margin-bottom:0;
}

.warning{
  border-left:8px solid var(--red);
  background:#fff;
  padding:1.25rem 1.35rem;
  border-radius:18px;
  box-shadow:var(--shadow-soft);
}

.warning strong{
  color:var(--red);
}

/* ---------------- Lists ---------------- */

.check-list{
  list-style:none;
  margin:1rem 0 0;
  padding:0;
  display:grid;
  gap:.65rem;
}

.check-list li{
  position:relative;
  padding-left:2rem;
  font-weight:750;
}

.check-list li::before{
  content:"✓";
  position:absolute;
  left:0;
  top:.05rem;
  width:1.35rem;
  height:1.35rem;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(47,158,68,.14);
  color:var(--green);
  font-weight:1000;
  line-height:1;
}

.number-list{
  counter-reset:item;
  list-style:none;
  padding:0;
  margin:1.25rem 0 0;
  display:grid;
  gap:.9rem;
}

.number-list li{
  counter-increment:item;
  position:relative;
  padding:1rem 1rem 1rem 4rem;
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-soft);
}

.number-list li::before{
  content:counter(item);
  position:absolute;
  left:1rem;
  top:1rem;
  width:2rem;
  height:2rem;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--navy);
  color:#fff;
  font-weight:1000;
}

/* ---------------- Page Hero / Interior ---------------- */

.page-hero{
  padding:5rem 0 3rem;
  color:#fff;
  background:
    linear-gradient(135deg, rgba(7,24,47,.94), rgba(15,45,85,.88)),
    url("images/solarfiretruck-hero-electric-postal-truck-fire-readiness.jpg") center/cover;
}

.page-hero .container{
  max-width:var(--max);
}

.page-hero p{
  max-width:760px;
  color:rgba(255,255,255,.82);
  font-size:1.16rem;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:.4rem;
  font-size:.86rem;
  color:rgba(255,255,255,.72);
  margin-bottom:1rem;
}

.breadcrumb a{
  color:#fff;
  font-weight:800;
}

.content{
  max-width:850px;
  margin-inline:auto;
  font-size:1.06rem;
}

.content h2{
  margin:2.2rem 0 .7rem;
  font-size:2rem;
  line-height:1.05;
  letter-spacing:-.03em;
}

.content h3{
  margin:1.7rem 0 .45rem;
  font-size:1.45rem;
  line-height:1.1;
}

.content a{
  color:var(--blue);
  font-weight:850;
  text-decoration:underline;
  text-underline-offset:3px;
}

.content img{
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  margin:1.5rem 0;
}

/* ---------------- Episode / Manga ---------------- */

.episode-grid{
  display:grid;
  grid-template-columns:repeat(5, minmax(0,1fr));
  gap:1rem;
}

.episode-card{
  position:relative;
  overflow:hidden;
  min-height:360px;
  border-radius:var(--radius);
  background:#07182f;
  box-shadow:var(--shadow-soft);
}

.episode-card img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}

.episode-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(0deg, rgba(3,9,20,.9), transparent 58%);
}

.episode-card .episode-copy{
  position:absolute;
  z-index:2;
  left:1rem;
  right:1rem;
  bottom:1rem;
  color:#fff;
}

.episode-label{
  display:inline-block;
  padding:.3rem .55rem;
  border-radius:999px;
  color:#07182f;
  background:var(--gold);
  font-weight:1000;
  font-size:.75rem;
  text-transform:uppercase;
}

.episode-card h3{
  margin:.55rem 0 .25rem;
  font-size:1.35rem;
  line-height:1;
}

.episode-card p{
  color:rgba(255,255,255,.75);
  margin:0;
  font-size:.92rem;
}

/* ---------------- FAQ ---------------- */

.faq{
  display:grid;
  gap:.8rem;
}

.faq details{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:1rem 1.15rem;
  box-shadow:var(--shadow-soft);
}

.faq summary{
  cursor:pointer;
  font-weight:950;
  color:var(--navy);
}

.faq details p{
  margin:.7rem 0 0;
  color:var(--muted);
}

/* ---------------- Sitemap ---------------- */

.sitemap-list{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:1rem;
}

.sitemap-list a{
  display:block;
  padding:1rem;
  border-radius:16px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  font-weight:900;
  color:var(--navy);
}

.sitemap-list a:hover{
  color:var(--red);
  transform:translateY(-1px);
}

/* ---------------- Footer ---------------- */

.site-footer{
  color:#fff;
  background:
    radial-gradient(circle at top right, rgba(248,183,42,.14), transparent 28rem),
    linear-gradient(135deg, #041020, #07182f 60%, #020812);
  padding:3.5rem 0 2rem;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.3fr .7fr .7fr .9fr;
  gap:1.5rem;
  align-items:start;
}

.footer-brand{
  display:flex;
  align-items:center;
  gap:.75rem;
  margin-bottom:1rem;
}

.footer-brand .brand-mark{
  flex:0 0 auto;
}

.site-footer p{
  color:rgba(255,255,255,.72);
}

.footer-title{
  font-weight:950;
  color:#fff;
  margin:0 0 .8rem;
  text-transform:uppercase;
  letter-spacing:.07em;
  font-size:.8rem;
}

.footer-links{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:.45rem;
}

.footer-links a{
  color:rgba(255,255,255,.72);
}

.footer-links a:hover{
  color:var(--gold);
}

.footer-bottom{
  margin-top:2rem;
  padding-top:1.25rem;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  color:rgba(255,255,255,.58);
  font-size:.9rem;
}

/* ---------------- Utilities ---------------- */

.text-center{
  text-align:center;
}

.mt-0{ margin-top:0 !important; }
.mt-1{ margin-top:1rem !important; }
.mt-2{ margin-top:2rem !important; }
.mb-0{ margin-bottom:0 !important; }
.mb-1{ margin-bottom:1rem !important; }
.mb-2{ margin-bottom:2rem !important; }

.bg-soft{
  background:var(--soft);
}

.rounded{
  border-radius:var(--radius);
}

.shadow{
  box-shadow:var(--shadow);
}

.kpi-row{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:1rem;
}

.kpi{
  padding:1.2rem;
  border-radius:20px;
  background:#fff;
  box-shadow:var(--shadow-soft);
  border:1px solid var(--line);
}

.kpi b{
  display:block;
  font-size:2rem;
  line-height:1;
  color:var(--red);
}

.kpi span{
  display:block;
  color:var(--muted);
  font-weight:750;
  margin-top:.3rem;
}

/* ---------------- Responsive ---------------- */

@media (max-width: 980px){
  .nav-button{
    display:block;
  }

  .nav-menu{
    position:absolute;
    left:12px;
    right:12px;
    top:82px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:.25rem;
    padding:.75rem;
    border-radius:20px;
    background:rgba(7,24,47,.98);
    border:1px solid rgba(255,255,255,.14);
    box-shadow:0 22px 70px rgba(0,0,0,.38);
  }

  .nav-menu a{
    border-radius:14px;
    padding:.9rem 1rem;
  }

  .nav-toggle:checked ~ .nav-button span{
    opacity:0;
  }

  .nav-toggle:checked ~ .nav-button::before{
    top:20px;
    transform:rotate(45deg);
  }

  .nav-toggle:checked ~ .nav-button::after{
    bottom:20px;
    transform:rotate(-45deg);
  }

  .nav-toggle:checked ~ .nav-menu{
    display:flex;
  }

  .hero{
    min-height:620px;
  }

  .hero h1,
  .page-title{
    font-size:clamp(2.7rem, 12vw, 5rem);
  }

  .hero-badges{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .grid-4,
  .grid-3{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .split{
    grid-template-columns:1fr;
  }

  .episode-grid{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .footer-grid{
    grid-template-columns:1fr 1fr;
  }

  .sitemap-list{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .kpi-row{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
}

@media (max-width: 640px){
  .container,
  .hero-content,
  .nav-wrap{
    width:min(100% - 24px, var(--max));
  }

  .brand-title{
    font-size:1rem;
  }

  .brand-subtitle{
    display:none;
  }

  .hero{
    min-height:560px;
  }

  .hero::after{
    background:
      linear-gradient(0deg, rgba(3,9,20,.94) 0%, rgba(3,9,20,.48) 55%, rgba(3,9,20,.5) 100%);
  }

  .hero-content{
    padding:5.5rem 0 3.2rem;
  }

  .hero-lede{
    font-size:1.05rem;
  }

  .hero-badges,
  .grid-2,
  .grid-3,
  .grid-4,
  .episode-grid,
  .footer-grid,
  .sitemap-list,
  .kpi-row{
    grid-template-columns:1fr;
  }

  .section{
    padding:3.4rem 0;
  }

  .section-tight{
    padding:2.5rem 0;
  }

  .card{
    padding:1.1rem;
  }

  .feature-card img{
    height:210px;
  }

  .footer-bottom{
    display:block;
  }
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    scroll-behavior:auto !important;
    transition:none !important;
    animation:none !important;
  }
}
```