:root {
    --ink: #101827;
    --charcoal: #172033;
    --rust: #a94219;
    --rust-dark: #8b2f13;
    --sand: #f5efe5;
    --paper: #fffdf8;
    --line: #ded2c2;
    --muted: #5f6b7a;
    --green: #455f4d;
}
body { background: var(--sand); color: var(--ink); }
.demo-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(245,239,229,.96);
    border-bottom: 1px solid var(--line);
    padding: 1rem 2rem;
}
.demo-nav .nav-logo { color: var(--ink); }
.demo-nav-actions { display: flex; gap: 1rem; align-items: center; }
.demo-nav-actions a { color: var(--ink); text-decoration: none; font-weight: 800; }
.demo-nav-actions .quote-link { color: var(--rust); }
.demo-hero {
    min-height: auto;
    padding: 7rem 0 5rem;
    background:
        linear-gradient(90deg, rgba(16,24,39,.96), rgba(16,24,39,.72), rgba(16,24,39,.38)),
        image-set(url('/images/generated-samples/responsive/roofing-hero-commercial-roof-720.webp') 1x, url('/images/generated-samples/optimized/roofing-hero-commercial-roof.webp') 2x);
    background-size: cover;
    background-position: center;
    color: #fff;
}
.hero-layout {
    display: grid;
    gap: 2rem;
    align-items: center;
}
.demo-hero .hero-content { max-width: 760px; }
.demo-hero h1 { max-width: 820px; }
.demo-hero p { color: rgba(255,255,255,.82); }
.demo-btn {
    background: var(--rust);
    color: #fff;
    border-radius: 8px;
    min-height: 54px;
}
.demo-btn:hover { background: var(--rust-dark); }
.demo-btn.secondary {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.28);
}
.hero-panel {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 12px;
    padding: 1.2rem;
    backdrop-filter: blur(12px);
}
.hero-panel h2 { color: #fff; font-size: 1.1rem; margin-bottom: .8rem; }
.hero-panel ul { display: grid; gap: .65rem; list-style: none; }
.hero-panel li { color: rgba(255,255,255,.78); font-weight: 650; }
.hero-panel li::before { content: "•"; color: var(--rust); margin-right: .5rem; }
.trust-strip {
    background: var(--paper);
    border-bottom: 1px solid var(--line);
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line);
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
}
.trust-item {
    background: var(--paper);
    padding: 1rem;
}
.trust-item strong { display: block; color: var(--ink); }
.trust-item span { display: block; color: var(--muted); font-size: .9rem; margin-top: .25rem; }
.section { padding: 5rem 0; }
.section.white { background: #fff; }
.section.dark { background: var(--ink); color: #fff; }
.section-head {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}
.section-head h2 {
    font-size: clamp(2.1rem,4.5vw,3.6rem);
    line-height: 1.02;
    letter-spacing: -.03em;
    margin: 0;
}
.section-head p { color: var(--muted); font-size: 1.05rem; max-width: 720px; }
.section.dark .section-head p { color: rgba(255,255,255,.72); }
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(230px,1fr));
    gap: 1rem;
}
.demo-card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1.35rem;
}
.demo-card.alt { background: var(--sand); }
.demo-card h3 { margin-bottom: .5rem; color: var(--ink); }
.demo-card p, .demo-card li { color: var(--muted); }
.demo-card ul { padding-left: 1.2rem; }
.kicker {
    color: var(--rust);
    text-transform: uppercase;
    font-size: .78rem;
    letter-spacing: .14em;
    font-weight: 900;
    margin-bottom: .8rem;
}
.buyer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
.buyer-card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-left: 5px solid var(--rust);
    border-radius: 10px;
    padding: 1.4rem;
}
.buyer-card h3 { margin-bottom: .5rem; }
.buyer-card p { color: var(--muted); }
.systems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: .8rem;
}
.system-tile {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 10px;
    padding: 1.1rem;
}
.system-tile strong { display: block; color: #fff; margin-bottom: .35rem; }
.system-tile span { color: rgba(255,255,255,.68); font-size: .92rem; }
.process {
    counter-reset: step;
    display: grid;
    gap: 1rem;
}
.process-step {
    counter-increment: step;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1.2rem;
}
.process-step::before {
    content: counter(step);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    background: var(--rust);
    color: #fff;
    font-weight: 900;
}
.process-step p { color: var(--muted); }
.inspection-panel {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}
.inspection-head {
    background: var(--charcoal);
    color: #fff;
    padding: 1rem 1.2rem;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}
.inspection-head span {
    color: rgba(255,255,255,.68);
    font-size: .86rem;
    font-weight: 700;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1.2rem;
}
.field {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: .9rem;
    background: #fff;
}
.field label { display: block; color: var(--muted); font-size: .82rem; font-weight: 800; margin-bottom: .35rem; }
.field div { color: var(--ink); font-weight: 850; }
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
    gap: 1rem;
}
.portfolio-card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 10px;
    overflow: hidden;
}
.portfolio-image {
    min-height: 165px;
    background-size: cover;
    background-position: center;
}
.portfolio-image.inspect {
    background-image:
        linear-gradient(135deg, rgba(16,24,39,.08), rgba(16,24,39,.2)),
        url('/images/generated-samples/optimized/roofing-inspection-tablet.webp');
}
.portfolio-image.replace {
    background-image:
        linear-gradient(135deg, rgba(16,24,39,.08), rgba(16,24,39,.22)),
        url('/images/generated-samples/optimized/roofing-hero-commercial-roof.webp');
}
.portfolio-image.storm {
    background-image:
        linear-gradient(135deg, rgba(16,24,39,.06), rgba(16,24,39,.18)),
        url('/images/generated-samples/optimized/roofing-post-storm-inspection.webp');
}
.media-split {
    display: grid;
    gap: 1.5rem;
    align-items: stretch;
}
.media-frame {
    min-height: 360px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background:
        linear-gradient(135deg, rgba(16,24,39,.04), rgba(16,24,39,.16)),
        url('/images/generated-samples/optimized/roofing-inspection-tablet.webp');
    background-size: cover;
    background-position: center;
    box-shadow: 0 22px 55px rgba(16,24,39,.12);
}
.portfolio-body { padding: 1.2rem; }
.portfolio-body p { color: var(--muted); margin-top: .35rem; }
.sticky-mobile {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    grid-template-columns: 1fr 1fr;
    background: var(--ink);
    border-top: 1px solid rgba(255,255,255,.14);
}
.sticky-mobile a {
    color: #fff;
    text-align: center;
    text-decoration: none;
    font-weight: 900;
    padding: .85rem .6rem;
}
.sticky-mobile a:first-child { background: var(--rust); }
.demo-label {
    background: #111827;
    color: #fff;
    text-align: center;
    padding: .85rem 1rem;
    font-size: .8rem;
    letter-spacing: .08em;
}
@media (min-width: 900px) {
    .hero-layout { grid-template-columns: 1.2fr .8fr; }
    .media-split { grid-template-columns: .95fr 1.05fr; }
    .trust-grid { grid-template-columns: repeat(4, 1fr); }
    .section-head { grid-template-columns: .9fr 1fr; align-items: start; }
    .buyer-grid { grid-template-columns: repeat(4,1fr); }
    .systems-grid { grid-template-columns: repeat(3,1fr); }
    .process { grid-template-columns: repeat(4,1fr); }
    .form-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px) {
    .demo-nav { padding: .9rem 1rem; }
    .demo-nav-actions { display: none; }
    .hero h1 { font-size: 2.55rem; }
    .hero p { font-size: 1.08rem; margin-bottom: 1.5rem; }
    .demo-hero { padding: 4.5rem 0 6rem; }
    .sticky-mobile { display: grid; }
    body { padding-bottom: 50px; }
}