:root {
  --ip-bg: #070a0f;
  --ip-panel: #10151d;
  --ip-ink: #111722;
  --ip-muted: #667184;
  --ip-line: #dce2e9;
  --ip-cyan: #59d9ff;
  --ip-blue: #5c71ff;
  --ip-violet: #8c72ff;
}

html { scroll-behavior: smooth; }
body.insole-product-preview { margin: 0; color: var(--ip-ink); background: #fff; }
.insole-product-preview * { box-sizing: border-box; }
.insole-product-preview section[id] { scroll-margin-top: 88px; }
.insole-product-preview .purchase-card[id] { scroll-margin-top: 104px; }

.product-announcement {
  position: relative;
  z-index: 160;
  min-height: 32px;
  padding: 7px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: rgba(255,255,255,.78);
  background: #171a20;
  font-size: 11px;
  letter-spacing: .08em;
}
.product-announcement span:first-child { color: #fff; font-weight: 800; }
.product-announcement i { width: 3px; height: 3px; border-radius: 50%; background: #fff; opacity: .45; }

.insole-product-preview .site-header { top: 32px; position: absolute; background: rgba(8,11,16,.56); border-bottom-color: rgba(255,255,255,.08); }
.insole-product-preview .site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: rgba(8,11,16,.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  transition: opacity .3s;
}
.insole-product-preview .site-header.scrolled { top: 0; position: fixed; }
.insole-product-preview .site-header.scrolled::before { opacity: 1; }

.product-hero {
  position: relative;
  min-height: 820px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 75% 38%, rgba(72,98,145,.28), transparent 35%),
    linear-gradient(112deg, #090b0f 0%, #12161d 46%, #343941 100%);
}
.product-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(0,0,0,.24), transparent 56%), radial-gradient(circle at 80% 78%, rgba(255,255,255,.13), transparent 24%);
}
.product-subnav-wrap {
  position: absolute;
  z-index: 5;
  top: 112px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, calc(100% - 48px));
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 48px;
  color: rgba(255,255,255,.72);
}
.product-subnav-wrap > strong { margin-right: auto; font-size: 14px; letter-spacing: .04em; }
.product-subnav { display: flex; align-items: center; gap: 32px; }
.product-subnav a { font-size: 13px; transition: color .2s; }
.product-subnav a:hover { color: #fff; }
.product-buy-link { padding: 10px 18px; color: #111 !important; background: #fff; border-radius: 6px; font-weight: 800; }

.product-hero-grid {
  position: relative;
  z-index: 2;
  min-height: 820px;
  padding-top: 160px;
  display: grid;
  grid-template-columns: minmax(420px,.78fr) minmax(560px,1.22fr);
  align-items: center;
  gap: 30px;
}
.product-hero-copy { padding: 80px 0 50px; }
.product-eyebrow {
  display: block;
  margin-bottom: 22px;
  color: var(--ip-cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .23em;
}
.product-hero-copy h1 {
  max-width: 620px;
  margin: 0;
  font-size: clamp(58px,5vw,78px);
  line-height: 1.06;
  letter-spacing: -.07em;
}
.product-hero-copy h1 em {
  color: transparent;
  font-style: normal;
  background: linear-gradient(90deg,#84e8ff,#7caaff 52%,#a889ff);
  background-clip: text;
  -webkit-background-clip: text;
}
.product-hero-copy > p { max-width: 560px; margin: 26px 0 0; color: rgba(255,255,255,.62); font-size: 16px; line-height: 1.9; }
.product-start-price { margin: 30px 0 22px; display: flex; align-items: baseline; gap: 8px; }
.product-start-price small { color: rgba(255,255,255,.45); font-size: 11px; }
.product-start-price strong { font-size: 28px; letter-spacing: -.03em; }
.product-start-price span { color: rgba(255,255,255,.46); font-size: 11px; }
.product-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.product-primary,.product-secondary {
  min-width: 138px;
  min-height: 50px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 800;
  transition: transform .2s,box-shadow .2s;
}
.product-primary { color: #111; background: #fff; box-shadow: 0 16px 35px rgba(0,0,0,.22); }
.product-secondary { color: #fff; border: 1px solid rgba(255,255,255,.34); }
.product-primary:hover,.product-secondary:hover { transform: translateY(-2px); }
.product-order-note { display: block; margin-top: 16px; color: rgba(255,255,255,.36); font-size: 11px; }
.product-hero-visual { position: relative; min-width: 0; align-self: center; }
.product-hero-visual::before { content: ""; position: absolute; inset: 16% 12%; border-radius: 50%; background: rgba(51,118,255,.22); filter: blur(60px); }
.product-hero-visual img { position: relative; z-index: 1; width: 100%; display: block; border-radius: 28px; box-shadow: 0 34px 90px rgba(0,0,0,.36); }
.product-visual-note { position: absolute; z-index: 2; left: 22px; bottom: 20px; padding: 9px 13px; display: flex; align-items: center; gap: 9px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.62); background: rgba(4,7,12,.62); backdrop-filter: blur(12px); font-size: 10px; }
.product-visual-note i { width: 6px; height: 6px; border-radius: 50%; background: #48e4b5; box-shadow: 0 0 12px #48e4b5; }

.product-section { padding: 120px 0; }
.product-section-title { max-width: 800px; margin-bottom: 58px; }
.product-section-title.centered { margin-left: auto; margin-right: auto; text-align: center; }
.product-section-title h2 { margin: 0; font-size: clamp(44px,4.4vw,66px); line-height: 1.08; letter-spacing: -.06em; }
.product-section-title p { max-width: 680px; margin: 22px auto 0; color: var(--ip-muted); font-size: 15px; line-height: 1.85; }

.product-highlights { background: #fff; }
.highlight-stage { position: relative; max-width: 1180px; min-height: 480px; margin: 0 auto; overflow: hidden; border-radius: 30px; background: #05080c; box-shadow: 0 30px 80px rgba(19,31,45,.14); }
.highlight-stage img { width: 100%; height: 100%; min-height: 480px; display: block; object-fit: cover; }
.highlight-stage::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg,transparent 55%,rgba(0,0,0,.48)); pointer-events: none; }
.highlight-stage span { position: absolute; z-index: 2; left: 24px; bottom: 22px; padding: 10px 14px; border-radius: 999px; color: #fff; background: rgba(0,0,0,.58); font-size: 11px; }
.highlight-points { max-width: 1180px; margin: 24px auto 0; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--ip-line); border-bottom: 1px solid var(--ip-line); }
.highlight-points article { padding: 32px 30px; }
.highlight-points article + article { border-left: 1px solid var(--ip-line); }
.highlight-points small { color: #2faeea; font-weight: 800; letter-spacing: .15em; }
.highlight-points h3 { margin: 18px 0 8px; font-size: 22px; }
.highlight-points p { margin: 0; color: var(--ip-muted); font-size: 13px; line-height: 1.7; }

.product-accessories { background: #f0f2f5; }
.accessory-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; }
.accessory-visual { min-height: 500px; overflow: hidden; border-radius: 30px; background: #04070b; box-shadow: 0 30px 80px rgba(17,28,40,.16); }
.accessory-visual img { width: 100%; height: 100%; min-height: 500px; display: block; object-fit: cover; }
.accessory-copy h2 { margin: 0; font-size: clamp(48px,4.7vw,72px); letter-spacing: -.06em; }
.accessory-copy > p { margin: 24px 0 38px; color: var(--ip-muted); font-size: 16px; line-height: 1.9; }
.accessory-name { padding: 24px 0; display: grid; grid-template-columns: 86px 1fr; gap: 5px 20px; border-top: 1px solid #cfd6de; border-bottom: 1px solid #cfd6de; }
.accessory-name span { grid-row: 1 / 3; color: #399bcc; font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.accessory-name strong { font-size: 18px; }
.accessory-name small { color: #7a8492; }

.product-specs { color: #fff; background: #0a0d12; }
.product-specs .product-section-title { margin-bottom: 45px; }
.spec-selector { display: inline-flex; padding: 5px; border: 1px solid rgba(255,255,255,.14); border-radius: 9px; background: rgba(255,255,255,.035); }
.spec-selector button { min-width: 150px; min-height: 44px; padding: 0 18px; border: 0; border-radius: 6px; color: rgba(255,255,255,.54); background: transparent; cursor: pointer; font: inherit; font-size: 13px; font-weight: 800; }
.spec-selector button.active { color: #111; background: #fff; }
.spec-panel { margin-top: 34px; padding: 50px; display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; align-items: center; border: 1px solid rgba(255,255,255,.13); border-radius: 24px; background: linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.018)); }
.spec-model-name h3 { margin: 0; font-size: 34px; }
.spec-panel dl { margin: 0; display: grid; grid-template-columns: repeat(2,1fr); }
.spec-panel dl > div { min-height: 126px; padding: 18px 34px; display: flex; flex-direction: column; justify-content: center; border-left: 1px solid rgba(255,255,255,.12); }
.spec-panel dl > div:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.12); }
.spec-panel dt { color: rgba(255,255,255,.42); font-size: 12px; }
.spec-panel dd { margin: 14px 0 0; font-size: 30px; font-weight: 800; }
.spec-footnote { margin: 18px 0 0; color: rgba(255,255,255,.36); font-size: 11px; }

.product-purchase { background: #f4f6f8; }
.purchase-heading { margin-bottom: 48px; }
.purchase-promo-strip {
  margin-bottom: 24px;
  min-height: 56px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-radius: 12px;
  background: #F3F7FD;
  box-shadow: inset 0 0 0 1px rgba(140, 161, 191, 0.08), 0 10px 24px rgba(16, 24, 40, 0.07);
}
.purchase-promo-strip-icon {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}
.purchase-promo-strip-icon img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.purchase-promo-strip-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}
.purchase-promo-strip-content {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  color: #334155;
  font-size: 16px;
  line-height: 1.5;
}
.purchase-promo-line {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 12px;
}
.purchase-promo-line + .purchase-promo-line::before {
  content: "｜";
  color: #c0c9d6;
}
.purchase-promo-highlight {
  color: #1677FF;
  font-weight: 600;
}
.purchase-promo-divider {
  color: #c0c9d6;
}
.purchase-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.purchase-card { padding: 38px; border: 1px solid #d9e0e7; border-radius: 24px; background: #fff; }
.purchase-card.featured { color: #fff; background: #111820; border-color: #243848; }
.purchase-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.purchase-card-head span { font-size: 25px; font-weight: 800; }
.purchase-card-head small { color: #5d8da4; }
.purchase-card.featured .purchase-card-head small { color: #75d5f4; }
.purchase-price { margin-top: 34px; display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.purchase-price small { color: #7b8795; }
.purchase-price small { flex-basis: 100%; font-size: 14px; line-height: 1.4; }
.purchase-price strong { color: var(--ip-ink); font-size: clamp(44px,4vw,60px); letter-spacing: -.05em; line-height: 1.05; }
.purchase-price span { color: #172033; font-size: 16px; }
.purchase-card > p { margin: 8px 0 28px; color: #3373c9; font-size: 13px; font-weight: 800; }
.purchase-card.featured > p { color: #6cddff; }
.purchase-card > .purchase-lock-price { width: fit-content; margin: 24px 0 32px; padding: 9px 18px; display: flex; align-items: baseline; gap: 8px; border-radius: 12px; color: #172033; background: #eaf4ff; font-size: 18px; font-weight: 600; line-height: 1.4; }
.purchase-lock-price strong { color: #1677ff; font-size: 20px; font-weight: 800; }
.purchase-actions { display: grid; grid-template-columns: 1fr; gap: 10px; }
.purchase-actions a { position: relative; min-height: 56px; padding: 0 58px; display: flex; align-items: center; justify-content: center; border-radius: 10px; color: #fff; background: #1677ff; font-size: 16px; font-weight: 700; }
.purchase-actions a:first-child { color: #fff; background: #1677ff; }
.purchase-action-arrow { position: absolute; right: 24px; top: 50%; color: #fff; font-size: 34px; font-weight: 300; line-height: 1; transform: translateY(-53%); }
.purchase-info { margin-top: 22px; padding: 30px; display: grid; grid-template-columns: repeat(3,1fr); border: 1px solid #d9e0e7; border-radius: 20px; background: #fff; }
.purchase-info div { padding: 0 25px; }
.purchase-info div + div { border-left: 1px solid #dfe5eb; }
.purchase-info strong,.purchase-info span { display: block; }
.purchase-info strong { font-size: 16px; }
.purchase-info span { margin-top: 8px; color: var(--ip-muted); font-size: 11px; line-height: 1.55; }
.purchase-info-item { display: flex; align-items: flex-start; gap: 16px; }
.purchase-info-icon { width: 28px; height: 28px; margin-top: 2px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.purchase-info-icon img { width: 28px; height: 28px; display: block; }
.purchase-note { max-width: 930px; margin: 22px auto 0; color: #7b8593; font-size: 11px; line-height: 1.8; text-align: center; }

.product-preview-label { position: fixed; z-index: 120; right: 18px; bottom: 18px; padding: 9px 13px; border: 1px solid rgba(88,218,255,.22); border-radius: 999px; color: #dff7ff; background: rgba(3,13,24,.86); font-size: 10px; letter-spacing: .12em; backdrop-filter: blur(14px); }
.product-mobile-buy { display: none; }

@media (max-width: 1080px) {
  .product-hero-grid { grid-template-columns: minmax(380px,.9fr) minmax(460px,1.1fr); }
  .product-hero-copy h1 { font-size: clamp(52px,6vw,68px); }
  .accessory-layout { gap: 40px; }
}

@media (max-width: 820px) {
  .product-announcement { gap: 9px; padding-inline: 10px; font-size: 9px; letter-spacing: .02em; }
  .insole-product-preview .site-header { top: 32px; }
  .product-subnav-wrap { top: 112px; width: calc(100% - 32px); }
  .product-subnav-wrap > strong { display: none; }
  .product-subnav { width: 100%; justify-content: center; gap: 18px; }
  .product-subnav a { font-size: 11px; }
  .product-buy-link { padding: 8px 12px; }
  .product-hero { min-height: auto; }
  .product-hero-grid { min-height: auto; padding-top: 200px; padding-bottom: 72px; grid-template-columns: 1fr; gap: 42px; }
  .product-hero-copy { padding: 0; }
  .product-hero-copy h1 { font-size: clamp(48px,12.5vw,68px); }
  .product-hero-copy > p { font-size: 14px; }
  .product-hero-visual { margin: 0 -4px; }
  .product-section { padding: 82px 0; }
  .product-section-title { margin-bottom: 38px; }
  .product-section-title h2 { font-size: clamp(39px,10vw,54px); }
  .highlight-stage,.highlight-stage img { min-height: 300px; }
  .highlight-points { grid-template-columns: 1fr; }
  .highlight-points article + article { border-left: 0; border-top: 1px solid var(--ip-line); }
  .accessory-layout { grid-template-columns: 1fr; gap: 36px; }
  .accessory-visual,.accessory-visual img { min-height: 300px; }
  .spec-panel { padding: 34px 24px; grid-template-columns: 1fr; gap: 32px; }
  .spec-panel dl > div:first-child { border-left: 0; }
  .spec-panel dl > div:nth-child(1) { order: 1; }
  .spec-panel dl > div:nth-child(2) { order: 5; }
  .spec-panel dl > div:nth-child(3) { order: 9; }
  .spec-panel dl > div:nth-child(4) { order: 2; }
  .spec-panel dl > div:nth-child(5) { order: 6; }
  .spec-panel dl > div:nth-child(6) { order: 10; }
  .spec-panel dl > div:nth-child(7) { order: 3; }
  .spec-panel dl > div:nth-child(8) { order: 7; }
  .spec-panel dl > div:nth-child(9) { order: 11; }
  .spec-panel dl > div:nth-child(10) { order: 4; }
  .spec-panel dl > div:nth-child(11) { order: 8; }
  .spec-panel dl > div:nth-child(12) { order: 12; }
  .purchase-promo-strip {
    padding: 11px 14px;
    gap: 12px;
  }
  .purchase-promo-strip-content {
    display: block;
    font-size: 14px;
  }
  .purchase-promo-line {
    flex-wrap: wrap;
    gap: 6px 10px;
  }
  .purchase-promo-line-main {
    margin-bottom: 4px;
  }
  .purchase-promo-line + .purchase-promo-line::before {
    display: none;
  }
  .purchase-promo-divider { display: inline; }
  .purchase-grid { grid-template-columns: 1fr; }
  .purchase-info { grid-template-columns: 1fr; }
  .purchase-info div { padding: 18px 0; }
  .purchase-info div + div { border-left: 0; border-top: 1px solid #dfe5eb; }
  .product-preview-label { display: none; }
  .product-mobile-buy { position: fixed; z-index: 135; left: 12px; right: 12px; bottom: 12px; padding: 10px 10px 10px 17px; display: flex; align-items: center; justify-content: space-between; gap: 14px; border: 1px solid rgba(255,255,255,.13); border-radius: 16px; color: #fff; background: rgba(8,12,18,.92); backdrop-filter: blur(18px); box-shadow: 0 16px 42px rgba(0,0,0,.28); }
  .product-mobile-buy strong,.product-mobile-buy span { display: block; }
  .product-mobile-buy strong { font-size: 14px; }
  .product-mobile-buy span { color: rgba(255,255,255,.48); font-size: 10px; }
  .product-mobile-buy a { padding: 12px 16px; border-radius: 7px; color: #111; background: #fff; font-size: 11px; font-weight: 800; }
}

@media (max-width: 520px) {
  .product-announcement span:nth-of-type(2) { display: none; }
  .product-announcement i:first-of-type { display: none; }
  .product-subnav { gap: 12px; }
  .product-hero-grid { padding-top: 190px; }
  .product-hero-actions { display: grid; grid-template-columns: repeat(2,1fr); }
  .product-primary,.product-secondary { min-width: 0; padding-inline: 14px; }
  .product-visual-note { left: 12px; bottom: 12px; }
  .highlight-stage span { left: 14px; bottom: 14px; }
  .accessory-name { grid-template-columns: 1fr; }
  .accessory-name span { grid-row: auto; }
  .spec-selector { width: 100%; }
  .spec-selector button { min-width: 0; flex: 1; }
  .spec-panel dl { grid-template-columns: 1fr; }
  .spec-panel dl > div { padding: 20px 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.12); }
  .purchase-card { padding: 30px 22px; }
  .purchase-card-head { align-items: flex-start; flex-direction: column; gap: 6px; }
  .purchase-actions { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .product-primary,.product-secondary { transition: none; }
}

/* Full-screen clean-white product hero v5 */
.product-hero {
  min-height: calc(100svh - 32px);
  color: #141414;
  background: #f8f9fa;
}
.product-hero::before {
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(248,249,250,.99) 0%, rgba(248,249,250,.96) 31%, rgba(248,249,250,.6) 50%, rgba(248,249,250,.1) 72%);

}
.product-subnav-wrap { color: rgba(20,20,20,.64); }
.product-subnav a:hover { color: #111; }
.product-buy-link { color: #fff !important; background: #111; }
.product-hero-grid {
  z-index: 1;
  width: 100%;
  max-width: none;
  min-height: calc(100svh - 32px);
  padding: 160px clamp(48px,7vw,120px) 60px;
  display: block;
}
.product-hero-copy {
  position: relative;
  z-index: 4;
  width: min(42vw,560px);
  padding: clamp(92px,12vh,140px) 0 56px;
}
.product-hero-copy > p { color: rgba(20,20,20,.62); }
.product-start-price small,.product-start-price span { color: rgba(20,20,20,.48); }
.product-hero-actions {
  width: 152px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}
.product-primary,.product-secondary { width: 100%; min-width: 0; }
.product-primary { color: #fff; background: #111; box-shadow: 0 16px 35px rgba(0,0,0,.18); }
.product-secondary { color: #111; border-color: rgba(17,17,17,.28); background: rgba(255,255,255,.22); }
.product-order-note { color: rgba(20,20,20,.42); }
.product-hero-visual {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
}
.product-hero-visual::before { display: none; }
.product-hero-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 0;
  box-shadow: none;
  mix-blend-mode: normal;
}
.product-visual-note { left: auto; right: clamp(24px,4vw,64px); bottom: 30px; }
.product-language-link { min-width: 92px; text-align: center; }

@media (max-width: 1080px) {
  .product-hero-copy { width: min(48vw,530px); }
}

@media (max-width: 820px) {
  .product-hero { min-height: calc(100svh - 32px); }
  .product-hero::before {
    background:
      linear-gradient(180deg, rgba(248,249,250,.99) 0%, rgba(248,249,250,.97) 51%, rgba(248,249,250,.58) 73%, rgba(248,249,250,.22) 100%);
  }
  .product-hero-grid {
    min-height: calc(100svh - 32px);
    padding: 190px 24px 72px;
    display: block;
  }
  .product-hero-copy { width: 100%; max-width: 560px; padding: 30px 0 260px; }
  .product-hero-visual { position: absolute; inset: 0; margin: 0; }
  .product-hero-visual img { object-position: 64% center; opacity: .72; }
  .product-visual-note { right: 16px; bottom: 18px; }
}

@media (max-width: 520px) {
  .product-hero-grid { padding-top: 184px; }
  .product-hero-copy { padding-bottom: 220px; }
  .product-hero-actions { width: 148px; display: flex; }
}
/* Hero stacking correction v3.1 */
.product-hero-grid { z-index: auto; }
.product-hero-copy h1,.product-start-price strong { color: #111; }
/* Product story redesign v4 */
.product-section { padding: clamp(96px,9vw,142px) 0; }
.product-highlights { background: #f8f9fa; }
.product-highlights > .shell {
  display: block;
}
.product-highlights .product-section-title.centered {
  position: static;
  max-width: 900px;
  margin: 0 auto 68px;
  padding: 0;
  text-align: center;
}
.product-highlights .product-section-title h2 { font-size: clamp(48px,4.8vw,72px); }
.product-highlights .product-section-title p { margin-left: auto; margin-right: auto; }
.product-highlights .highlight-points {
  max-width: 1180px;
  margin: 0 auto;
  border-color: rgba(17,24,32,.14);
}
.product-highlights .highlight-points article { min-height: 210px; padding: 38px 34px; }
.product-highlights .highlight-points small { font-size: 10px; }
.product-highlights .highlight-points h3 { margin-top: 14px; font-size: 20px; }

.product-accessories { color: #fff; background: #090d13; }
.product-accessories .accessory-layout { grid-template-columns: 1.12fr .88fr; gap: clamp(48px,7vw,104px); }
.product-accessories .accessory-visual {
  min-height: 620px;
  border: 1px solid rgba(113,201,255,.16);
  border-radius: 28px;
  background: #03070c;
  box-shadow: 0 36px 100px rgba(0,0,0,.32);
}
.product-accessories .accessory-visual img { min-height: 620px; }
.product-accessories .accessory-copy > p { color: rgba(255,255,255,.58); }
.accessory-capabilities { margin: 0 0 34px; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.14); }
.accessory-capabilities li {
  min-height: 82px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 0;
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.accessory-capabilities strong,.accessory-capabilities small { display: block; }
.accessory-capabilities strong { font-size: 15px; }
.accessory-capabilities small { margin-top: 6px; color: rgba(255,255,255,.44); font-size: 11px; }
.product-accessories .accessory-name { border-color: rgba(255,255,255,.16); }
.product-accessories .accessory-name small { color: rgba(255,255,255,.4); }

.product-specs > .shell {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  column-gap: 48px;
  align-items: end;
}
.product-specs .product-section-title { grid-column: 1; margin: 0; }
.product-specs .spec-selector { grid-column: 2; margin-bottom: 4px; }
.product-specs .spec-panel { grid-column: 1 / -1; margin-top: 50px; border-radius: 28px; }
.product-specs .spec-footnote { grid-column: 1 / -1; }
.spec-panel dd { letter-spacing: -.04em; }

.product-purchase { background: #efede8; }
.product-purchase .purchase-heading {
  max-width: 920px;
  margin: 0 0 58px;
  text-align: left;
}
.product-purchase .purchase-heading p { margin-left: 0; margin-right: 0; }
.purchase-grid { gap: 16px; }
.purchase-card {
  position: relative;
  min-height: 360px;
  padding: 42px;
  display: flex;
  flex-direction: column;
  border: 0;
  border-radius: 28px;
  box-shadow: 0 24px 70px rgba(29,39,50,.1);
}
.purchase-card-head { padding-top: 22px; }
.purchase-actions { margin-top: auto; }
.purchase-info {
  margin-top: 34px;
  padding: 26px 0;
  border-width: 1px 0;
  border-radius: 0;
  background: transparent;
}
.purchase-note { margin-top: 26px; }

@media (max-width: 980px) {

  .product-highlights .product-section-title.centered { max-width: 760px; }

  .product-accessories .accessory-layout { grid-template-columns: 1fr; }
  .product-accessories .accessory-copy { max-width: 720px; }
  .product-accessories .accessory-visual,.product-accessories .accessory-visual img { min-height: 460px; }
}

@media (max-width: 820px) {
  .product-section { padding: 82px 0; }
  .product-highlights .product-section-title h2 { font-size: clamp(42px,11vw,56px); }

  .product-highlights .highlight-points { grid-template-columns: 1fr; }
  .product-highlights .highlight-points article { padding: 24px 6px; }
  .product-highlights .highlight-points article + article { border-left: 0; border-top: 1px solid var(--ip-line); }
  .product-accessories .accessory-copy { order: -1; }
  .product-accessories .accessory-visual,.product-accessories .accessory-visual img { min-height: 320px; }
  .product-specs > .shell { display: block; }
  .product-specs .spec-selector { margin-top: 32px; }
  .product-specs .spec-panel { margin-top: 24px; }
  .purchase-card { min-height: 340px; padding: 32px 24px; }
}
/* Product-facing specification grid: keep all values at one visual level. */
.spec-panel dd,
.spec-panel dd.spec-value-compact {
  max-width: none;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: -.02em;
}
.spec-panel dd.spec-power-options {
  font-size: 19px;
  white-space: nowrap;
}
.spec-panel dd.spec-platforms {
  font-size: 19px;
  line-height: 1.45;
  letter-spacing: 0;
}
.spec-platforms span {
  display: block;
  white-space: nowrap;
}

@media (min-width: 821px) {
  .spec-panel dl { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .spec-panel dl > div { min-height: 116px; padding: 18px 26px; }
  .spec-panel dl > div:nth-child(n+3) { border-top: 0; }
  .spec-panel dl > div:nth-child(n+4) { border-top: 1px solid rgba(255,255,255,.12); }
}

@media (max-width: 640px) {
  .spec-panel dd,
  .spec-panel dd.spec-value-compact { font-size: 20px; }
}

/* Refined graphite-blue consumer electronics color system. */
:root {
  --ip-bg: #08111d;
  --ip-panel: #101d2c;
  --ip-ink: #101828;
  --ip-muted: #66758a;
  --ip-line: #d8e1eb;
  --ip-cyan: #46c7f4;
  --ip-blue: #3278e6;
  --ip-violet: #5279e8;
  --ip-surface: #f8fafc;
  --ip-surface-soft: #edf2f7;
  --ip-button: var(--ip-blue);
}

body.insole-product-preview {
  color: var(--ip-ink);
  background: var(--ip-surface-soft);
}

.product-announcement { background: var(--ip-bg); }
.insole-product-preview .site-header {
  background: rgba(8,17,29,.76);
  border-bottom-color: rgba(255,255,255,.09);
}
.insole-product-preview .site-header.scrolled::before { background: rgba(8,17,29,.95); }

.product-hero {
  color: #fff;
  background: radial-gradient(circle at 78% 40%,#163251 0%,#0b1a2b 34%,#08111d 72%);
}
.product-hero::before {
  background: linear-gradient(90deg,rgba(8,17,29,.98) 0%,rgba(8,17,29,.92) 28%,rgba(8,17,29,.46) 49%,rgba(8,17,29,.04) 72%);
}
.product-hero-copy h1,
.product-start-price strong { color: #fff; }
.product-hero-copy h1 em {
  color: transparent;
  background: linear-gradient(90deg,#6dd7f7 0%,#76a9f8 58%,#9b8cf4 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.product-hero-copy > p { color: rgba(225,234,244,.72); }
.product-start-price small,
.product-start-price span { color: rgba(225,234,244,.56); }
.product-order-note { color: rgba(225,234,244,.48); }
.product-primary,
.product-buy-link {
  color: var(--ip-ink) !important;
  background: #fff;
}
.product-secondary {
  color: #fff;
  border-color: rgba(255,255,255,.3);
  background: rgba(255,255,255,.06);
}

.product-highlights { background: var(--ip-surface); }
.product-highlights .highlight-points {
  border-color: var(--ip-line);
  background: rgba(255,255,255,.68);
}
.product-highlights .highlight-points small { color: var(--ip-blue); }

.product-accessories {
  color: #fff;
  background: linear-gradient(145deg,#0c1a29 0%,#08111d 72%);
}
.product-accessories .accessory-visual {
  border-color: rgba(70,199,244,.2);
  background: #050d16;
}

.product-specs {
  color: var(--ip-ink);
  background: var(--ip-surface-soft);
}
.spec-selector button { color: var(--ip-ink); }
.spec-selector button.active {
  color: #fff;
  background: var(--ip-blue);
}
.spec-panel {
  border-color: var(--ip-line);
  background: rgba(255,255,255,.74);
  box-shadow: 0 24px 70px rgba(16,24,40,.07);
}
.spec-panel dl > div { border-color: rgba(16,24,40,.1); }
.spec-panel dt { color: rgba(16,24,40,.52); }
.spec-panel dd { color: var(--ip-ink); }

.product-purchase { background: var(--ip-surface); }
.purchase-card {
  border-color: var(--ip-line);
  background: #fff;
  box-shadow: 0 24px 70px rgba(16,24,40,.08);
}
.purchase-card.featured {
  color: #fff;
  border-color: rgba(70,199,244,.18);
  background: linear-gradient(145deg,#132740 0%,#08111d 82%);
}
.purchase-actions a { color: var(--ip-ink); background: #e8eef5; }
.purchase-actions a:first-child { color: #fff; background: var(--ip-button); }
.purchase-card.featured .purchase-actions a:first-child { color: #fff; background: var(--ip-button); }
.purchase-info { border-color: var(--ip-line); }
.product-mobile-buy { background: rgba(8,17,29,.96); }

@media (max-width: 820px) {
  .product-hero::before {
    background: linear-gradient(180deg,rgba(8,17,29,.98) 0%,rgba(8,17,29,.93) 49%,rgba(8,17,29,.48) 72%,rgba(8,17,29,.1) 100%);
  }
}

.product-video-trigger {
  font: inherit;
  cursor: pointer;
}

body.product-video-open {
  overflow: hidden;
}

.product-video-modal[hidden] {
  display: none;
}

.product-video-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  width: 100vw;
  height: 100dvh;
  background: #000;
  opacity: 0;
  transition: opacity .22s ease;
}

.product-video-modal.is-open {
  opacity: 1;
}

.product-video-player {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.product-video-close {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  z-index: 1001;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  color: #fff;
  font: 300 32px/1 Arial, sans-serif;
  border: 1px solid rgba(255,255,255,.38);
  border-radius: 50%;
  background: rgba(0,0,0,.48);
  backdrop-filter: blur(12px);
  cursor: pointer;
}

.product-video-close:hover,
.product-video-close:focus-visible {
  background: rgba(255,255,255,.16);
  outline: 2px solid #6dd7f7;
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .product-video-modal { transition: none; }
}