:root {
  --navy: #1d385f;
  --ink: #171717;
  --muted: #626262;
  --line: #dedede;
  --paper: #ffffff;
  --soft: #f5f5f5;
  --red: #9c3027;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, input { font: inherit; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; background: white; padding: .7rem 1rem; }
.skip-link:focus { left: 1rem; top: 1rem; }

.announcement {
  background: var(--navy);
  color: white;
  text-align: center;
  padding: 10px 20px;
  font-size: 13px;
  letter-spacing: .08em;
}
.announcement a { text-decoration: none; }
.announcement a:hover { text-decoration: underline; }

.site-header { background: #f7f7f7; border-bottom: 1px solid var(--line); }
.header-inner {
  min-height: 96px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 5vw;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}
.brand img { width: 122px; height: auto; }
.desktop-nav { display: flex; gap: 34px; align-items: center; white-space: nowrap; }
.desktop-nav a, .header-actions a { color: #454545; text-decoration: none; font-size: 15px; letter-spacing: .025em; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"], .header-actions a:hover { text-decoration: underline; text-underline-offset: 7px; }
.header-actions { justify-self: end; display: flex; gap: 20px; align-items: center; }
.header-actions .amazon-mini { border: 1px solid #555; padding: 8px 14px; text-decoration: none; }
.menu-button { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.menu-button span { width: 25px; height: 1px; display: block; background: #222; margin: 6px 0; }
.mobile-nav { display: none; }

.wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.home-hero { padding: 64px 0 76px; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 66px; }
.hero-image { aspect-ratio: 1 / .88; overflow: hidden; background: #eee; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.eyebrow { margin: 0 0 12px; color: var(--red); font-size: 12px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; line-height: 1.14; letter-spacing: -.025em; }
h1 { font-size: clamp(38px, 4.2vw, 64px); margin-bottom: 24px; }
h2 { font-size: clamp(28px, 3vw, 43px); margin-bottom: 20px; }
h3 { font-size: 21px; }
.lead { font-size: 18px; color: #505050; max-width: 660px; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 50px;
  padding: 12px 25px; background: var(--navy); color: white; border: 1px solid var(--navy);
  text-decoration: none; letter-spacing: .04em; font-weight: 650;
}
.button:hover { background: #132a49; }
.button.secondary { color: var(--navy); background: white; }
.button.secondary:hover { background: #f5f7fa; }
.amazon-note { display: block; margin-top: 10px; font-size: 13px; color: #737373; }

.facts { background: var(--navy); color: white; }
.facts-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.fact { text-align: center; padding: 27px 16px; border-right: 1px solid rgba(255,255,255,.22); }
.fact:last-child { border-right: 0; }
.fact strong { display: block; font-size: 22px; }
.fact span { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; opacity: .85; }

.section { padding: 84px 0; }
.section.soft { background: var(--soft); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 74px; }
.two-col.reverse .media { order: 2; }
.media img { width: 100%; height: auto; }
.text-copy p { color: #525252; }
.plain-list { padding-left: 1.2rem; }
.plain-list li { margin: .55rem 0; }
.card-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 34px; }
.card-strip img { width: 100%; height: auto; object-fit: contain; border-radius: 8px; box-shadow: 0 10px 28px rgba(0,0,0,.12); }
.closing { text-align: center; background: #f2ede6; }
.closing .lead { margin-left: auto; margin-right: auto; }

.page-hero { padding: 70px 0 54px; text-align: center; }
.page-hero p { margin: 0 auto; }
.product-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 54px; align-items: start; padding: 56px 0 82px; }
.gallery-main { border: 1px solid #e4e4e4; background: #fafafa; }
.gallery-main img { width: 100%; height: auto; object-fit: contain; }
.thumb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-top: 15px; }
.thumb-grid img { width: 100%; height: auto; object-fit: contain; border: 1px solid #e4e4e4; }
.product-info { position: sticky; top: 22px; }
.product-info h1 { font-size: clamp(36px, 4vw, 54px); }
.price { font-size: 25px; margin: 0 0 18px; }
.feature-list { list-style: none; padding: 0; margin: 26px 0; border-top: 1px solid var(--line); }
.feature-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.product-copy { max-width: 780px; padding-bottom: 80px; }
.product-copy h2 { margin-top: 52px; }
.product-section { padding: 78px 0; }
.product-section + .product-section { border-top: 1px solid var(--line); }
.product-section.soft { background: var(--soft); border-top: 0; }
.section-intro { max-width: 720px; margin-bottom: 36px; }
.step-grid, .benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step-card, .benefit-card { padding: 28px; background: white; border: 1px solid var(--line); }
.step-number { display: inline-grid; place-items: center; width: 36px; height: 36px; margin-bottom: 18px; border-radius: 50%; background: var(--navy); color: white; font-weight: 700; }
.step-card p, .benefit-card p { margin-bottom: 0; color: #525252; }
.benefit-card h3 { color: var(--navy); }
.box-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; padding: 42px; background: #f2ede6; }
.box-panel img { width: 100%; height: auto; object-fit: contain; }
.box-panel ul { margin: 0; padding-left: 1.2rem; font-size: 18px; }
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.fit-card { padding: 30px; border: 1px solid var(--line); }
.fit-card h3 { margin-bottom: 18px; }
.fit-card ul { margin: 0; padding-left: 1.25rem; }
.fit-card li { margin: .65rem 0; }
.product-faq { max-width: 850px; }

.content-page { max-width: 850px; padding: 64px 0 90px; }
.content-page h1 { font-size: clamp(38px, 5vw, 58px); }
.content-page h2 { margin-top: 52px; font-size: 31px; }
.content-page h3 { margin-top: 30px; }
.content-page p, .content-page li { color: #484848; }
.founders { width: 100%; height: auto; margin: 34px 0 45px; }
.rule-step { padding: 25px 0; border-top: 1px solid var(--line); }
.rule-step:last-of-type { border-bottom: 1px solid var(--line); }
.rule-illustration { width: 100%; height: auto; object-fit: contain; margin-top: 30px; border-radius: 3px; }

.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; padding: 21px 42px 21px 0; font-weight: 650; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 7px; font-size: 24px; font-weight: 400; top: 15px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 34px 22px 0; margin-top: 0; }

.contact-card { background: var(--soft); padding: 38px; margin-top: 35px; }
.contact-email { font-size: clamp(23px, 4vw, 34px); font-weight: 700; color: var(--navy); word-break: break-word; }

.site-footer { background: #f5f5f5; border-top: 1px solid var(--line); padding: 48px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 50px; }
.footer-logo { width: 135px; margin-bottom: 15px; }
.site-footer h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .12em; }
.site-footer ul { padding: 0; margin: 0; list-style: none; }
.site-footer li { margin: 7px 0; }
.site-footer a { color: #4d4d4d; }
.copyright { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 22px; font-size: 13px; color: #707070; }

@media (max-width: 900px) {
  .header-inner { min-height: 78px; grid-template-columns: 1fr auto 1fr; padding: 0 20px; }
  .desktop-nav { display: none; }
  .menu-button { display: block; justify-self: start; }
  .header-actions .amazon-mini { display: none; }
  .brand img { width: 104px; }
  .mobile-nav { padding: 18px 24px 28px; border-top: 1px solid var(--line); }
  .mobile-nav.open { display: grid; gap: 14px; }
  .mobile-nav a { text-decoration: none; padding: 5px 0; }
  .hero-grid, .two-col, .product-layout { grid-template-columns: 1fr; gap: 38px; }
  .step-grid, .benefit-grid { grid-template-columns: 1fr; }
  .box-panel { grid-template-columns: 1fr; }
  .two-col.reverse .media { order: 0; }
  .product-info { position: static; }
  .facts-grid { grid-template-columns: repeat(2, 1fr); }
  .fact:nth-child(2) { border-right: 0; }
  .fact:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.22); }
  .card-strip { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .wrap { width: min(100% - 32px, var(--max)); }
  .announcement { font-size: 11px; }
  .home-hero { padding: 28px 0 50px; }
  .hero-grid { gap: 32px; }
  .hero-image { aspect-ratio: auto; overflow: visible; }
  .hero-image img { height: auto; object-fit: contain; }
  h1 { font-size: 39px; }
  .lead { font-size: 16px; }
  .section { padding: 58px 0; }
  .button { width: 100%; }
  .facts-grid { grid-template-columns: 1fr 1fr; }
  .fact strong { font-size: 18px; }
  .card-strip { grid-template-columns: repeat(2, 1fr); }
  .card-strip img:last-child { grid-column: 1 / -1; width: calc(50% - 7px); justify-self: center; }
  .page-hero { padding: 48px 0 30px; }
  .product-layout { padding-top: 28px; }
  .thumb-grid { gap: 8px; margin-top: 8px; }
  .content-page { padding: 45px 0 70px; }
  .product-section { padding: 56px 0; }
  .fit-grid { grid-template-columns: 1fr; }
  .box-panel { padding: 28px; }
  .contact-card { padding: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }