:root {
  --ink: #161616;
  --paper: #f7f4ee;
  --card: #fffdf8;
  --line: #d8d2c8;
  --soft: #ebe6dc;
  --muted: #69655f;
  --radius: 22px;
  --shadow: 0 16px 45px rgba(22, 22, 22, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a { color: inherit; }
button, select { font: inherit; }

.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(247,244,238,.93); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(12px); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; border: 2px solid var(--ink); font-size: 12px; letter-spacing: -.08em; }
.brand-name { font-size: 20px; }
.header-link { font-size: 14px; text-decoration-thickness: 1px; text-underline-offset: 4px; }

.hero { display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(38px, 6vw, 82px); padding: 72px 0 84px; align-items: start; }
.gallery { min-width: 0; }
.placeholder-card { border: 1px solid var(--line); background: var(--card); border-radius: var(--radius); min-height: 580px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 30px; gap: 8px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.placeholder-card::before, .placeholder-card::after { content:""; position:absolute; border-radius:50%; opacity:.34; }
.placeholder-card::before { width: 280px; height: 280px; left: -60px; top: 55px; background: #ffcf56; }
.placeholder-card::after { width: 230px; height: 230px; right: -35px; bottom: 55px; background: #82c7ea; }
.placeholder-card strong, .placeholder-card span { position: relative; z-index: 1; }
.placeholder-card strong { font-size: clamp(26px, 4vw, 46px); letter-spacing: -.04em; max-width: 440px; line-height: 1; }
.placeholder-card span { color: var(--muted); }
.placeholder-kicker { font-size: 12px; letter-spacing: .16em; font-weight: 800; }
.thumb-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.placeholder-card.small { min-height: 150px; box-shadow: none; padding: 18px; }
.placeholder-card.small::before { width: 90px; height: 90px; left: -20px; top: 15px; }
.placeholder-card.small::after { width: 75px; height: 75px; right: -15px; bottom: 10px; }
.placeholder-card.small strong { font-size: 18px; }
.placeholder-card.small span { font-size: 13px; }

.product-copy { padding-top: 18px; }
.eyebrow { font-size: 12px; letter-spacing: .16em; font-weight: 900; margin: 0 0 14px; }
h1 { font-size: clamp(48px, 6vw, 78px); line-height: .93; letter-spacing: -.06em; margin: 0; max-width: 620px; }
h2 { font-size: clamp(36px, 4.4vw, 58px); line-height: .98; letter-spacing: -.05em; margin: 0; }
h3 { font-size: 23px; letter-spacing: -.03em; margin: 12px 0 8px; }
.price { font-size: 28px; font-weight: 800; margin: 24px 0 12px; }
.lede { font-size: 20px; line-height: 1.55; margin: 0 0 28px; color: #35322f; }
.feature-list { padding: 0; margin: 0 0 30px; list-style: none; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.feature-list li { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.feature-list li:nth-child(odd) { padding-right: 14px; }
.feature-list li:nth-child(even) { padding-left: 14px; border-left: 1px solid var(--line); }
.feature-list span { font-weight: 850; }
.purchase-panel { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; box-shadow: 0 10px 30px rgba(22,22,22,.05); }
.quantity-row { display: flex; align-items: center; gap: 16px; justify-content: space-between; margin-bottom: 16px; }
.quantity-row label { font-weight: 750; }
.quantity-row select { min-width: 210px; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 12px 38px 12px 12px; color: var(--ink); }
.checkout-note, .microcopy, .small-note { color: var(--muted); font-size: 12px; }
.checkout-note { text-align: center; margin: 8px 0 0; }
.microcopy { margin: 16px 4px 0; }
.checkout-message { margin-top: 12px; font-size: 14px; font-weight: 700; }
.checkout-message.error { color: #9a1b1b; }
.checkout-message.success { color: #176331; }

.band { background: var(--ink); color: white; padding: 82px 0; }
.band-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; align-items: end; }
.band-grid p:last-child { margin: 0; font-size: 21px; line-height: 1.6; color: #dedad2; }
.detail-section { padding: 82px 0 92px; }
.detail-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.detail-card { min-height: 270px; padding: 26px; background: var(--card); border: 1px solid var(--line); border-radius: 18px; }
.detail-number { font-weight: 850; font-size: 12px; letter-spacing: .12em; }
.detail-card p { color: var(--muted); margin-bottom: 0; }
.material-section { padding-bottom: 96px; display: grid; grid-template-columns: 1fr .75fr; gap: 80px; align-items: center; }
.material-copy > p:not(.eyebrow):not(.small-note) { font-size: 19px; line-height: 1.6; }
.spec-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 28px; box-shadow: var(--shadow); }
dl { margin: 0; }
dl > div { display: flex; justify-content: space-between; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
dl > div:last-child { border-bottom: 0; }
dt { color: var(--muted); }
dd { margin: 0; font-weight: 800; text-align: right; }

.faq-wrap { background: #ebe6dc; padding: 88px 0; }
.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 72px; }
.faq-list { border-top: 1px solid #cfc7ba; }
details { border-bottom: 1px solid #cfc7ba; padding: 18px 0; }
summary { cursor: pointer; font-weight: 800; font-size: 18px; list-style: none; padding-right: 28px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 0; font-size: 22px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { color: #514c45; max-width: 720px; margin: 12px 0 2px; }

.site-footer { padding: 48px 0 28px; background: var(--card); border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; gap: 40px; align-items: flex-start; }
.footer-brand { margin-bottom: 12px; }
.footer-grid p { margin: 0; color: var(--muted); }
.footer-grid nav { display: grid; grid-template-columns: repeat(2, minmax(130px, 1fr)); gap: 10px 30px; }
.footer-grid nav a { font-size: 14px; text-underline-offset: 3px; }
.legal-line { margin-top: 44px; border-top: 1px solid var(--line); padding-top: 20px; color: var(--muted); font-size: 12px; }

.page { padding: 72px 0 100px; max-width: 820px; }
.page h1 { font-size: clamp(44px, 6vw, 70px); margin-bottom: 30px; }
.page h2 { font-size: 27px; margin-top: 38px; }
.page p, .page li { color: #393633; }
.page a { text-underline-offset: 3px; }

@media (max-width: 900px) {
  .hero, .band-grid, .material-section, .faq-grid { grid-template-columns: 1fr; gap: 42px; }
  .hero { padding-top: 42px; }
  .product-copy { padding-top: 0; }
  .detail-grid { grid-template-columns: repeat(2, 1fr); }
  .placeholder-card { min-height: 460px; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 26px, 1180px); }
  .site-header { position: static; }
  .header-link { display: none; }
  .hero { padding: 24px 0 58px; }
  .placeholder-card { min-height: 360px; border-radius: 18px; }
  .thumb-grid { gap: 8px; }
  .placeholder-card.small { min-height: 110px; padding: 10px; }
  .placeholder-card.small strong { font-size: 14px; }
  .placeholder-card.small span { display: none; }
  h1 { font-size: 49px; }
  .lede { font-size: 18px; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-list li:nth-child(even) { padding-left: 0; border-left: 0; }
  .quantity-row { align-items: stretch; flex-direction: column; gap: 8px; }
  .quantity-row select { width: 100%; }
  .band, .faq-wrap { padding: 64px 0; }
  .detail-section { padding: 64px 0; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-card { min-height: 0; }
  .material-section { padding-bottom: 70px; }
  .footer-grid { flex-direction: column; }
}