/* ===== Base / Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html:focus-within { scroll-behavior: smooth; }
html, body { height: 100%; margin: 0; }
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  line-height: 1.5;
  color: #0f172a;
  background: #ffffff;
}
main { flex: 1; }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
a { color: inherit; text-decoration: none; }

/* ===== Theme ===== */
:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --brand: #111827;
  --accent: #06b6d4;  /* Keep for now, consider changing to Orange/Red later for Charcoal */
  --accent-2: #22c55e;
  --warning: #ef4444;
  --card: #0b1220;
  --cardText: #e5e7eb;
  --border: #e5e7eb;
  --radius: 16px;
  --shadow: 0 12px 30px rgba(2, 6, 23, .12);
  --container: 1400px;
}

/* ===== Utilities ===== */
.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.section { padding: clamp(48px, 6vw, 96px) 0; }
.grid { display: grid; gap: clamp(16px, 2.5vw, 28px); }
.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 900px) { .two, .three { grid-template-columns: 1fr; } }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 12px 18px; border-radius: 999px; background: var(--accent); color: white; font-weight: 600; box-shadow: var(--shadow); cursor: pointer; border:none; }
.btn.secondary { background: #111827; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.h1 { font-size: clamp(28px, 5vw, 48px); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 12px; }
.h2 { font-size: clamp(22px, 3.5vw, 32px); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 10px; }
.lead { font-size: clamp(15px, 1.8vw, 18px); color: var(--muted); max-width: 60ch; }
.card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.card-inner { padding: clamp(16px, 2vw, 20px); }

/* ===== Hero ===== */
.hero { position: relative; isolation: isolate; }
.hero .bg { position: absolute; inset: 0; z-index: -1; background: radial-gradient(1200px 600px at 80% -20%, rgba(6,182,212,.15), transparent); }
.hero-wrap { display: grid; gap: 28px; align-items: center; grid-template-columns: 1.2fr .8fr; }
@media (max-width: 900px) { .hero-wrap { grid-template-columns: 1fr; } }

/* ===== Product Grids (Generic) ===== */
.sku-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 4vw, 48px); align-items: start; justify-items: center; }
@media (max-width: 980px) { .sku-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .sku-grid { grid-template-columns: 1fr; } }

.sku { text-align: center; max-width: 380px; margin-inline: auto; }
.sku-img { width: clamp(200px, 26vw, 320px); aspect-ratio: 1 / 1; border-radius: 50%; background: #fff; display: grid; place-items: center; box-shadow: 0 14px 35px rgba(0,0,0,.12); margin: 0 auto clamp(16px, 3vw, 22px); }
.sku-img img { width: 90%; height: 90%; object-fit: contain; }
.sku-title { font-size: clamp(18px, 2.2vw, 22px); font-weight: 900; margin: 0 0 8px; }
.sku-desc { color: var(--muted); font-size: 15px; }

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 10px; }
.faq-item { border: 1px solid var(--border); border-radius: 12px; background: #fff; overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 14px 16px; font-weight: 600; display: flex; justify-content: space-between; list-style:none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-weight: 700; margin-left: 12px; opacity: .7; }
.faq-item[open] summary::after { content: "−"; }
.faq-content { padding: 12px 16px 16px; color: var(--muted); line-height: 1.6; }

/* ===== Footer ===== */
footer { border-top: 1px solid var(--border); padding: 28px 0 56px; color: var(--muted); font-size: 14px; }