:root {
  --accent: #ff3b18;
  --accent-dark: #d92b0d;
  --ink: #151515;
  --ink-soft: #343434;
  --paper: #f7f6f3;
  --surface: #ffffff;
  --surface-muted: #efefed;
  --border: #d9d9d5;
  --text: #383838;
  --muted: #6b6b68;
  --max: 1200px;
  --read: 760px;
  --radius: 18px;
  --shadow: 0 22px 55px rgba(0, 0, 0, 0.1);
  --header-height: 74px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.nav-open { overflow: hidden; }

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

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

button, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid rgba(255, 59, 24, 0.58);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(20, 20, 20, 0.96);
  color: #fff;
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  width: min(calc(100% - 40px), var(--max));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand-link { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand-logo { width: 178px; height: auto; }

.desktop-nav { display: flex; align-items: center; gap: 30px; }

.desktop-nav a {
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.94rem;
  font-weight: 650;
  transition: color 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"] { color: #fff; }

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 19px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span { opacity: 0; }
.menu-toggle[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 90;
  display: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 26px 24px 40px;
  background: #171717;
  color: #fff;
}

.mobile-nav[data-open="true"] { display: block; }

.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 1.16rem;
  font-weight: 700;
}

.mobile-nav .header-cta { margin-top: 24px; border-bottom: 0; }

.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.reading { width: min(calc(100% - 40px), var(--read)); margin-inline: auto; }

.section { padding: 92px 0; }
.section-tight { padding: 64px 0; }
.section-dark { background: var(--ink); color: #fff; }
.section-white { background: var(--surface); }

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.section-dark .eyebrow { color: #ff765e; }

h1, h2, h3 {
  margin: 0;
  color: var(--ink);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section-dark h1,
.section-dark h2,
.section-dark h3 { color: #fff; }

h1 { font-size: clamp(2.65rem, 6vw, 5.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.65rem); }

.lede {
  max-width: 690px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.26rem);
}

.section-dark .lede { color: rgba(255, 255, 255, 0.72); }

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 38px;
}

.section-heading p { max-width: 520px; margin: 0; color: var(--muted); }

.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 750;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: #fff; }
.button-primary:hover { background: var(--accent-dark); }
.button-dark { background: var(--ink); color: #fff; }
.button-light { background: #fff; color: var(--ink); }
.button-outline { border-color: rgba(255, 255, 255, 0.55); color: #fff; background: transparent; }
.button-outline:hover { border-color: #fff; background: #fff; color: var(--ink); }

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - var(--header-height));
  display: grid;
  align-items: center;
  background:
    radial-gradient(circle at 78% 25%, rgba(255, 59, 24, 0.23), transparent 30%),
    linear-gradient(135deg, #111 0%, #1b1b1b 48%, #0d0d0d 100%);
  color: #fff;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -55% 35%;
  height: 80%;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 50%;
  transform: rotate(-10deg);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(440px, 1.08fr);
  align-items: center;
  gap: 44px;
  padding: 72px 0;
}

.hero h1 { max-width: 780px; color: #fff; }
.hero-copy { position: relative; z-index: 1; }
.hero-product {
  position: relative;
  padding: 22px;
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(255,255,255,.12), rgba(255,255,255,.03));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-product img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 22px; }

.hero-badge {
  position: absolute;
  right: 20px;
  bottom: 20px;
  max-width: 210px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(15, 15, 15, 0.88);
  color: #fff;
  font-size: 0.88rem;
  line-height: 1.35;
}

.trust-strip { border-bottom: 1px solid var(--border); background: var(--surface); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-item { padding: 26px 28px; border-right: 1px solid var(--border); }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; margin-bottom: 3px; color: var(--ink); }
.trust-item span { color: var(--muted); font-size: 0.94rem; }

.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.product-card { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.product-card-media { display: block; overflow: hidden; aspect-ratio: 4 / 3; background: #f1f1ef; }
.product-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 300ms ease; }
.product-card:hover .product-card-media img { transform: scale(1.025); }
.product-card-body { padding: 26px; }
.product-card-body h2, .product-card-body h3 { margin-bottom: 12px; }
.product-card-body p { margin: 0; color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; color: var(--ink); font-weight: 800; }
.text-link::after { content: "→"; color: var(--accent); transition: transform 180ms ease; }
.text-link:hover::after { transform: translateX(4px); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: var(--border); }
.feature-card { padding: 34px; background: var(--surface); }
.feature-number { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 32px; border-radius: 50%; background: var(--ink); color: #fff; font-weight: 800; }
.feature-card p { margin: 14px 0 0; color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 64px;
}

.split-media { border-radius: 26px; background: var(--surface-muted); overflow: hidden; }
.split-media img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.split-media-product img { object-fit: cover; }
.split-copy p { color: var(--muted); }

.category-band { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.category-tile { min-height: 245px; padding: 28px; display: flex; flex-direction: column; justify-content: end; border-radius: var(--radius); color: #fff; background: var(--ink); }
.category-tile:nth-child(2) { background: #3d352f; }
.category-tile:nth-child(3) { background: var(--accent-dark); }
.category-tile p { margin: 10px 0 0; color: rgba(255,255,255,.72); }

.page-hero { padding: 88px 0 68px; background: var(--surface); border-bottom: 1px solid var(--border); }
.page-hero h1 { max-width: 900px; }
.category-introduction { max-width: 780px; }

.faq-layout { max-width: 920px; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 82px;
  padding: 20px 52px 20px 0;
  color: var(--ink);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  font-weight: 750;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 500;
  transition: transform 180ms ease, background 180ms ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); background: var(--surface-muted); }
.faq-answer { padding: 0 52px 24px 0; }
.faq-answer p { max-width: 760px; margin: 0; color: var(--muted); }

.breadcrumbs { margin-bottom: 30px; color: var(--muted); font-size: 0.9rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #aaa; }

.product-detail { padding: 58px 0 88px; background: var(--surface); }
.product-detail-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr); gap: 66px; align-items: start; }
.product-gallery { position: sticky; top: calc(var(--header-height) + 24px); }
.gallery-main { display: grid; place-items: center; aspect-ratio: 1; overflow: hidden; border-radius: 24px; background: #f1f1ef; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; transform: scale(1.04); }
.gallery-thumbnails { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }
.gallery-thumb { height: 84px; padding: 0; overflow: hidden; border: 1px solid var(--border); border-radius: 12px; background: #f1f1ef; cursor: pointer; }
.gallery-thumb[aria-current="true"] { border: 2px solid var(--accent); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: contain; }
.product-info { padding-top: 18px; }
.product-info h1 { font-size: clamp(2.6rem, 5vw, 4.5rem); }
.product-summary { margin: 22px 0 0; color: var(--muted); font-size: 1.1rem; }
.product-price { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; margin-top: 24px; }
.product-price-amount { color: var(--ink); font-size: clamp(1.7rem, 3vw, 2.25rem); line-height: 1; letter-spacing: -.035em; }
.product-price-meta { color: var(--muted); font-size: .88rem; }
.asin-label { display: inline-flex; margin-top: 22px; padding: 7px 11px; border-radius: 999px; background: var(--surface-muted); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .8rem; }
.purchase-note { margin: 16px 0 0; color: var(--muted); font-size: .88rem; }

.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.feature-list article { padding: 26px; border-top: 2px solid var(--ink); }
.feature-list p { margin: 12px 0 0; color: var(--muted); }

.spec-table { border-top: 1px solid var(--border); }
.spec-row { display: grid; grid-template-columns: minmax(180px, .42fr) minmax(0, 1fr); gap: 28px; padding: 19px 4px; border-bottom: 1px solid var(--border); }
.spec-row dt { color: var(--ink); font-weight: 750; }
.spec-row dd { margin: 0; color: var(--muted); }

.media-banner { overflow: hidden; border-radius: 26px; background: var(--surface-muted); }
.media-banner img { width: 100%; max-height: 720px; object-fit: contain; }

.about-hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(430px, 1.1fr); gap: 56px; align-items: center; }
.about-collage { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-collage img { width: 100%; height: 100%; min-height: 330px; object-fit: cover; border-radius: var(--radius); background: var(--surface-muted); }
.about-collage img:last-child { margin-top: 54px; }

.cta-panel { padding: 52px; border-radius: 26px; background: var(--ink); color: #fff; }
.cta-panel h2 { color: #fff; }
.cta-panel p { max-width: 660px; color: rgba(255,255,255,.72); }

.site-footer { background: #111; color: #fff; }
.footer-main { display: grid; grid-template-columns: 1.3fr repeat(3, .7fr); gap: 48px; padding: 68px 0 48px; }
.footer-brand p { max-width: 390px; color: rgba(255,255,255,.62); }
.footer-heading { margin: 0 0 16px; color: #fff; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links li + li { margin-top: 9px; }
.footer-links a { color: rgba(255,255,255,.7); }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0 28px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.55); font-size: .86rem; }

.legal-hero { padding-bottom: 54px; }
.legal-date { margin: 22px 0 0; color: var(--muted); font-size: .9rem; }
.legal-content > p:first-child { color: var(--muted); font-size: 1.05rem; }
.legal-content section { padding: 28px 0; border-top: 1px solid var(--border); }
.legal-content section:first-of-type { margin-top: 34px; }
.legal-content section h2 { margin-bottom: 12px; font-size: clamp(1.35rem, 3vw, 1.8rem); }
.legal-content section p { margin: 0; color: var(--text); }
.legal-content a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 1023px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .hero { min-height: auto; }
  .hero-grid, .about-hero-grid { grid-template-columns: 1fr; }
  .hero-grid { padding: 62px 0; }
  .hero-copy { max-width: 760px; }
  .hero-product { max-width: 660px; margin-inline: auto; }
  .product-detail-grid { grid-template-columns: 1fr; gap: 42px; }
  .product-gallery { position: static; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  :root { --header-height: 66px; }
  .header-inner, .container, .reading { width: min(calc(100% - 28px), var(--max)); }
  .brand-logo { width: 154px; }
  .section { padding: 68px 0; }
  .section-tight { padding: 48px 0; }
  .section-heading { align-items: start; flex-direction: column; margin-bottom: 28px; }
  h1 { font-size: clamp(2.5rem, 13vw, 3.8rem); overflow-wrap: anywhere; }
  h2 { font-size: clamp(1.9rem, 9vw, 2.8rem); }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; padding: 50px 0 42px; }
  .button-row { flex-direction: column; }
  .button-row .button { width: 100%; }
  .hero-badge { position: static; max-width: none; margin-top: 12px; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid var(--border); }
  .trust-item:last-child { border-bottom: 0; }
  .product-grid, .split, .category-band, .feature-list { grid-template-columns: 1fr; }
  .split { gap: 34px; }
  .product-card-body { padding: 22px; }
  .category-tile { min-height: 210px; }
  .page-hero { padding: 58px 0 48px; }
  .faq-item summary { min-height: 72px; padding-right: 44px; }
  .faq-answer { padding-right: 0; }
  .product-detail { padding: 34px 0 68px; }
  .product-info { padding-top: 0; }
  .product-info h1 { font-size: clamp(2.35rem, 12vw, 3.5rem); }
  .gallery-thumbnails { gap: 7px; }
  .gallery-thumb { height: 66px; }
  .spec-row { grid-template-columns: 1fr; gap: 6px; }
  .about-collage img { min-height: 210px; }
  .about-collage img:last-child { margin-top: 30px; }
  .cta-panel { padding: 34px 24px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px 20px; padding: 54px 0 38px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

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