:root {
  --ink: #183039;
  --muted: #607078;
  --cream: #f7f3ea;
  --paper: #fffdf8;
  --green: #2f776e;
  --green-dark: #245d57;
  --mint: #ddede8;
  --gold: #e5a84b;
  --peach: #efc6ac;
  --line: rgba(24, 48, 57, .14);
  --shadow: 0 22px 60px rgba(24, 48, 57, .12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.6; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.skip-link { position: fixed; z-index: 1000; top: 1rem; left: 1rem; padding: .7rem 1rem; background: var(--ink); color: white; transform: translateY(-200%); }
.skip-link:focus { transform: none; }

.site-header { position: sticky; z-index: 50; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 76px; padding: .8rem clamp(1rem, 5vw, 5rem); border-bottom: 1px solid var(--line); background: rgba(255, 253, 248, .94); backdrop-filter: blur(14px); }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: .8rem; font-weight: 800; text-decoration: none; letter-spacing: -.02em; }
.brand img, .footer-brand img { border-radius: 11px; }
.site-nav { display: flex; align-items: center; gap: 1.7rem; }
.site-nav a { color: var(--muted); font-size: .94rem; font-weight: 700; text-decoration: none; }
.site-nav a:hover { color: var(--green-dark); }
.site-nav .nav-cta { padding: .7rem 1.05rem; border-radius: 999px; color: white; background: var(--green); }
.menu-toggle { display: none; border: 1px solid var(--line); border-radius: 999px; background: transparent; padding: .55rem .9rem; color: var(--ink); font: inherit; font-weight: 800; }

.hero { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); align-items: center; gap: clamp(2rem, 6vw, 7rem); min-height: calc(100vh - 76px); padding: clamp(4rem, 8vw, 8rem) clamp(1.2rem, 6vw, 7rem); overflow: hidden; background: var(--cream); }
.hero::before { position: absolute; z-index: -1; content: ""; width: 42rem; height: 42rem; right: -17rem; top: -17rem; border-radius: 50%; background: var(--mint); }
.hero-copy { max-width: 680px; }
.eyebrow { margin: 0 0 1rem; color: var(--green-dark); font-size: .79rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 780px; margin-bottom: 1.4rem; font-size: clamp(3.1rem, 6.7vw, 6.8rem); }
h2 { margin-bottom: 1.2rem; font-size: clamp(2.25rem, 4vw, 4.3rem); }
h3 { margin-bottom: .7rem; font-size: 1.35rem; }
.hero-lead { max-width: 640px; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: .85rem 1.25rem; border: 1px solid transparent; border-radius: 999px; font-weight: 850; line-height: 1.2; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(24,48,57,.14); }
.button-primary { background: var(--green); color: white; }
.button-primary:hover { background: var(--green-dark); }
.button-secondary { border-color: var(--line); background: rgba(255,255,255,.48); color: var(--ink); }
.button-light { background: white; color: var(--green-dark); }
.button-wide { width: 100%; margin-top: .5rem; }
.trust-row { display: flex; flex-wrap: wrap; gap: .8rem 1.4rem; margin: 0; padding: 0; color: var(--muted); font-size: .9rem; font-weight: 700; list-style: none; }
.trust-row li::before { content: "✓"; margin-right: .4rem; color: var(--green); }
.hero-visual { position: relative; z-index: 1; }
.hero-visual img { position: relative; border: 10px solid rgba(255,255,255,.9); border-radius: 26px; box-shadow: var(--shadow); transform: rotate(1.5deg); }
.visual-glow { position: absolute; inset: 12% -8% -10% 8%; border-radius: 48%; background: var(--peach); filter: blur(2px); transform: rotate(-6deg); opacity: .7; }

.product-section, .steps-section, .standards-section, .about-section, .faq-section { padding: clamp(4.5rem, 9vw, 9rem) clamp(1.2rem, 6vw, 7rem); }
.product-section-alt { border-top: 1px solid var(--line); background: var(--cream); }
.section-heading { max-width: 830px; margin: 0 auto clamp(2.5rem, 5vw, 5rem); text-align: center; }
.section-heading > p:last-child { max-width: 700px; margin-inline: auto; color: var(--muted); font-size: 1.1rem; }
.section-heading.compact { margin-bottom: 3rem; }
.product-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .85fr); align-items: start; gap: clamp(2rem, 6vw, 6rem); max-width: 1320px; margin: auto; }
.gallery-main { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--cream); box-shadow: var(--shadow); }
.gallery-main img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: opacity .18s ease; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; margin-top: .8rem; }
.thumb { overflow: hidden; padding: 0; border: 2px solid transparent; border-radius: 10px; background: var(--cream); cursor: pointer; opacity: .68; }
.thumb:hover, .thumb.active { border-color: var(--green); opacity: 1; }
.thumb img { aspect-ratio: 4 / 3; object-fit: cover; }
.product-card { position: sticky; top: 110px; padding: clamp(1.5rem, 3vw, 2.4rem); border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.product-card > p { color: var(--muted); }
.product-card .product-badge { display: inline-block; margin-bottom: 1rem; padding: .35rem .65rem; border-radius: 999px; color: var(--green-dark); background: var(--mint); font-size: .74rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.product-card h3 { font-size: clamp(1.8rem, 3vw, 2.7rem); }
.product-card .compatibility { font-size: .88rem; }
.price { margin: 1.3rem 0; }
.price span { margin-right: .35rem; color: var(--ink); font-size: 2.4rem; font-weight: 900; letter-spacing: -.05em; }
.check-list { display: grid; gap: .65rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 1.65rem; }
.check-list li::before { position: absolute; left: 0; content: "✓"; color: var(--green); font-weight: 900; }
.checkout-note { margin: .9rem 0 0; text-align: center; font-size: .75rem; }
.text-link { display: block; margin-top: 1rem; color: var(--green-dark); font-size: .9rem; font-weight: 800; text-align: center; text-underline-offset: .2em; }

.steps-section { background: var(--ink); color: white; }
.steps-section .eyebrow { color: var(--peach); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; max-width: 1150px; margin: auto; }
.steps-grid article { padding: 2rem; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); background: rgba(255,255,255,.04); }
.steps-grid span { display: block; margin-bottom: 2rem; color: var(--gold); font-weight: 900; }
.steps-grid p { margin: 0; color: rgba(255,255,255,.68); }

.standards-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem, 8vw, 8rem); align-items: center; background: var(--cream); }
.standards-copy p:last-child { color: var(--muted); font-size: 1.1rem; }
.standards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.standards-grid article { min-height: 180px; padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.64); }
.standards-grid h3 { color: var(--green-dark); }
.standards-grid p { margin: 0; color: var(--muted); }

.about-section { display: grid; grid-template-columns: minmax(220px, 360px) minmax(0, 650px); justify-content: center; align-items: center; gap: clamp(2.5rem, 7vw, 7rem); }
.about-section img { width: 100%; border-radius: 50%; box-shadow: 0 0 0 14px var(--mint), var(--shadow); }
.about-section p { color: var(--muted); font-size: 1.05rem; }
.about-section .signature { margin-top: 1.7rem; color: var(--ink); font-weight: 800; }

.faq-section { background: var(--cream); }
.faq-list { max-width: 900px; margin: auto; border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 1.4rem 2.5rem 1.4rem 0; font-size: 1.08rem; font-weight: 800; cursor: pointer; }
.faq-list p { max-width: 760px; padding: 0 0 1.4rem; color: var(--muted); }

.closing-cta { display: flex; flex-direction: column; align-items: center; padding: clamp(5rem, 10vw, 9rem) 1.2rem; text-align: center; color: white; background: var(--green); }
.closing-cta img { margin-bottom: 1.5rem; border: 7px solid rgba(255,255,255,.22); border-radius: 18px; }
.closing-cta h2 { max-width: 800px; }
.closing-cta p { max-width: 620px; color: rgba(255,255,255,.78); font-size: 1.08rem; }
.closing-cta .button { margin-top: 1rem; }

.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 1rem 2rem; padding: 2.5rem clamp(1.2rem, 6vw, 7rem); color: rgba(255,255,255,.65); background: #10242b; font-size: .82rem; }
.site-footer p { margin: 0; }
.footer-brand { color: white; font-size: 1rem; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 1.2rem; }
.footer-links a { color: white; font-weight: 700; text-decoration: none; }
.disclaimer { grid-column: 1 / -1; max-width: 900px; }

@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 76px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; padding: 1rem 1.2rem 1.5rem; border-bottom: 1px solid var(--line); background: var(--paper); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: .6rem .4rem; }
  .site-nav .nav-cta { text-align: center; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { max-width: 760px; }
  .hero-visual { max-width: 760px; }
  .product-layout { grid-template-columns: 1fr; }
  .product-card { position: static; }
  .standards-section { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
  .site-header { min-height: 68px; }
  .brand img { width: 40px; height: 40px; }
  .site-nav { top: 68px; }
  .hero { padding-top: 3.2rem; }
  h1 { font-size: clamp(2.7rem, 14vw, 4.3rem); }
  .steps-grid, .standards-grid { grid-template-columns: 1fr; }
  .about-section { grid-template-columns: 1fr; text-align: center; }
  .about-section img { max-width: 240px; margin: auto; }
  .gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: .35rem; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  .disclaimer { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}