:root {
  --accent: #00ADB5;
  --accent-dark: #006d73;
  --ink: #253c3d;
  --muted: #596e6f;
  --line: #d7e6e4;
  --tint: #f0f8f6;
  --frame: #76b7b5;
  --radius: 4px;
  --sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: #f7faf8; color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.9; -webkit-font-smoothing: antialiased; }
body.gallery-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; height: auto; }
p, h1, h2, h3, blockquote, figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
sup { font-size: 10px; font-family: sans-serif; vertical-align: super; font-weight: 500; }
:focus-visible { outline: 3px solid var(--accent-dark); outline-offset: 5px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; top: -100px; left: 12px; z-index: 100; padding: 12px; background: white; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.95); }
.header-inner { max-width: 900px; height: 64px; padding: 0 28px; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 700; letter-spacing: .04em; }
.brand img { flex: 0 0 auto; }
.site-menu { position: relative; }
.site-menu summary { display: flex; align-items: center; gap: 9px; cursor: pointer; list-style: none; padding: 10px 0 10px 10px; min-height: 44px; }
.site-menu summary::-webkit-details-marker { display: none; }
.menu-label { font-size: 11px; }
.menu-lines, .menu-lines::after { display: block; width: 22px; height: 1px; background: var(--ink); }
.menu-lines::after { content: ""; transform: translateY(6px); }
.menu-lines { transform: translateY(-3px); }
.site-menu[open] .menu-lines { transform: rotate(45deg); }
.site-menu[open] .menu-lines::after { transform: rotate(90deg); }
.site-menu nav { position: absolute; top: 48px; right: 0; width: min(300px, calc(100vw - 40px)); background: white; border: 1px solid var(--line); box-shadow: 0 12px 30px #173f3c14; border-radius: 8px; padding: 12px; }
.site-menu nav a { display: block; padding: 10px 14px; font-size: 13px; border-radius: 4px; }
.site-menu nav a:hover, .site-menu nav a[aria-current] { background: var(--tint); color: var(--accent-dark); }
.page-wrapper { max-width: 760px; margin: auto; background: #fff; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; padding: 20px 32px 0; color: var(--muted); font-size: 11px; }
.breadcrumb a:hover { text-decoration: underline; }
.hero { text-align: center; padding: 22px 32px 40px; }
.hero-kicker { font-size: 13px; letter-spacing: .16em; margin-bottom: 18px; }
.hero h1 { font-family: var(--serif); font-size: 58px; line-height: 1.4; color: var(--accent-dark); letter-spacing: .06em; }
.hero h1 rt { font: 11px sans-serif; letter-spacing: .35em; }
.hero h1 > span { display: block; font-size: 28px; letter-spacing: .12em; margin-top: 3px; }
.hero-lead { font-size: 15px; margin-top: 18px; letter-spacing: .05em; }
.hero-image-link { display: block; width: min(100%, 360px); margin: -5px auto 0; position: relative; }
.hero-image { width: 100%; }
.image-expand { position: absolute; right: 7%; bottom: 8%; font-size: 11px; border: 1px solid var(--line); background: #fff; padding: 3px 9px; border-radius: var(--radius); }
.product-tags { display: flex; justify-content: center; flex-wrap: wrap; gap: 0; margin: 0 0 27px; }
.product-tags li { font-size: 12px; line-height: 1.5; padding: 0 12px; border-right: 1px solid var(--line); }
.product-tags li:last-child { border-right: 0; }
.gallery-preview { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; max-width: 520px; margin: auto; }
.gallery-preview a { min-width: 0; font-size: 10px; color: var(--muted); }
.gallery-preview img { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s; }
.gallery-preview a:hover img { border-color: var(--accent); }
.gallery-preview span { display: block; margin-top: 5px; white-space: nowrap; }
.gallery-hint { color: var(--muted); font-size: 11px; margin-top: 14px; }
.purchase-links { max-width: 340px; margin: 24px auto 0; }
.shop-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; padding: 15px 18px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 2px 8px rgb(89 78 65 / 5%); transition: background .2s; }
.shop-link:hover, .shop-link:active { background: #fcf9f5; }
.shop-link-left { display: flex; align-items: center; gap: 12px; }
.shop-link-icon { width: 24px; color: #ff9900; font-size: 18px; font-weight: 800; text-align: center; }
.shop-link-text { font-size: 14px; font-weight: 600; letter-spacing: .03em; }
.shop-link-arrow { flex: 0 0 16px; width: 16px; height: 16px; fill: none; stroke: #b3a796; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.purchase-footer { padding: 40px 24px; }
.purchase-footer .purchase-links { margin-top: 0; }
.hero-actions { display: flex; justify-content: center; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 18px; min-height: 50px; padding: 13px 22px; font-size: 13px; font-weight: 600; border-radius: var(--radius); border: 1px solid var(--accent-dark); transition: background .2s; }
.button-primary { background: var(--accent-dark); color: white; }
.button-primary:hover { background: #00595f; }
.button-secondary { color: var(--accent-dark); background: white; }
.button-secondary:hover { background: var(--tint); }
.intro-band { padding: 42px 20px; text-align: center; background: var(--accent); color: #123c3e; }
.intro-band p { font-family: var(--serif); font-size: 20px; letter-spacing: .05em; line-height: 2; }
.intro-band strong { font-weight: 600; font-size: 29px; }
.intro-band > span { display: block; margin-top: 14px; font-size: 11px; letter-spacing: .1em; }
.mobile-break { display: none; }
.section-nav { display: flex; justify-content: center; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding: 14px 8px; gap: 0; }
.section-nav a { padding: 5px 18px; font-size: 12px; border-right: 1px solid var(--line); }
.section-nav a:last-child { border: 0; }
.section-nav a:hover { color: var(--accent-dark); text-decoration: underline; }
.section { padding: 56px 44px; }
.section-tint { background: var(--tint); }
.section-heading { text-align: center; margin-bottom: 32px; }
.section-heading h2 { font-size: 28px; line-height: 1.45; letter-spacing: .015em; font-weight: 600; color: var(--accent-dark); }
.heading-lead { display: block; margin-bottom: 8px; font-size: 15px; line-height: 1.6; font-weight: 400; letter-spacing: .02em; color: var(--ink); }
.heading-main { display: block; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 18px; padding-top: 8px; }
.feature-card { position: relative; min-width: 0; padding: 28px 18px 30px; text-align: center; border: 1px solid var(--frame); border-radius: var(--radius); background: white; }
.feature-number { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%); padding: 0 12px; background: white; color: var(--accent-dark); font-size: 14px; line-height: 1.5; font-weight: 600; font-variant-numeric: tabular-nums; }
.feature-card p { font-size: 13px; line-height: 1.6; }
.feature-card h3 { font-size: 23px; font-weight: 600; line-height: 1.5; color: var(--accent-dark); margin-top: 9px; }
.footnote { font-size: 11px; color: var(--muted); margin-top: 13px; line-height: 1.7; }
.feature-visual { display: block; margin-top: 30px; }
.feature-visual img { width: 100%; }
.visual-caption { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; font-size: 12px; color: var(--accent-dark); border-bottom: 1px solid var(--line); }
.ingredient-group { display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 16px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.ingredient-group:first-child { padding-top: 0; }
.ingredient-index { color: var(--accent-dark); font-size: 14px; line-height: 1.5; font-weight: 600; font-variant-numeric: tabular-nums; padding-top: 6px; }
.ingredient-group h3 { font-size: 21px; font-weight: 600; line-height: 1.6; color: var(--accent-dark); }
.ingredient-names { display: grid; gap: 3px; margin: 10px 0 12px; }
.ingredient-names li { font-size: 13px; font-weight: 600; line-height: 1.7; overflow-wrap: anywhere; }
.ingredient-group p { font-size: 14px; line-height: 2; }
.text-link { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--accent-dark); padding: 14px 0; margin-top: 16px; border-bottom: 1px solid var(--accent-dark); font-size: 13px; }
.text-link:hover { text-decoration: underline; }
.vet-visual { margin-top: 0; }
.vet-message { margin-top: 0; }
.vet-message p { font-size: 14px; line-height: 2.2; margin-bottom: 20px; }
.vet-message strong { color: var(--accent-dark); font-weight: 600; }
.text-phrase { display: inline-block; }
.howto-section { background: #fafaf6; }
.feeding-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); grid-template-areas: "photo heading" "photo dose"; column-gap: 36px; row-gap: 20px; align-items: start; }
.feeding-heading { grid-area: heading; align-self: end; }
.feeding-heading h2 { font-size: 22px; font-weight: 500; line-height: 1.55; letter-spacing: .01em; }
.feeding-heading strong { display: inline-block; margin-top: 3px; color: var(--accent-dark); font-size: 32px; font-weight: 600; line-height: 1.4; }
.feeding-photo { grid-area: photo; align-self: center; min-width: 0; }
.feeding-photo img { width: 100%; height: auto; }
.feeding-photo figcaption { margin-top: 7px; color: var(--muted); font-size: 10px; line-height: 1.5; text-align: right; }
.feeding-dose { grid-area: dose; }
.feeding-dose-label { font-size: 12px; line-height: 1.6; }
.feeding-dose-value { display: flex; align-items: baseline; gap: 7px; margin: 4px 0 6px; color: var(--accent-dark); font-size: 16px; line-height: 1.2; }
.feeding-dose-value strong { font-size: 46px; font-weight: 500; letter-spacing: -.03em; line-height: 1; }
.usage-note { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.9; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table th, .spec-table td { text-align: left; padding: 16px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th { width: 27%; color: var(--muted); font-weight: 500; background: #f7faf8; }
.disclosure { border-bottom: 1px solid var(--line); }
.disclosure summary { padding: 21px 28px 21px 0; font-size: 14px; font-weight: 600; cursor: pointer; list-style: none; position: relative; }
.disclosure summary::-webkit-details-marker { display: none; }
.disclosure summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font-size: 20px; color: var(--accent-dark); font-weight: 400; }
.disclosure[open] summary::after { content: "−"; }
.faq-list { max-width: 600px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item { background: #fff; border-radius: 8px; }
.faq-item summary { display: flex; align-items: baseline; gap: 10px; position: relative; padding: 18px 48px 18px 20px; font-size: 14px; font-weight: 600; line-height: 1.8; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "Q."; flex-shrink: 0; color: var(--accent-dark); font-size: 14px; }
.faq-item summary::after { content: ""; position: absolute; right: 21px; top: 50%; width: 7px; height: 7px; border-right: 1px solid var(--muted); border-bottom: 1px solid var(--muted); transform: translateY(-70%) rotate(45deg); }
.faq-item[open] summary::after { transform: translateY(-20%) rotate(-135deg); }
.faq-item summary:focus-visible { border-radius: 8px; }
.faq-answer { padding: 0 20px 20px 46px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.site-footer { padding: 40px 24px; text-align: center; background: #e8f0ec; border-top: 1px solid var(--line); }
.site-footer > p { font-size: 12px; margin-top: 12px; }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; max-width: 680px; margin: 24px auto; font-size: 11px; color: var(--muted); }
.site-footer nav a:hover { text-decoration: underline; }
.site-footer small { color: var(--muted); font-size: 10px; }
.gallery-dialog { width: min(900px, calc(100vw - 24px)); max-width: none; max-height: calc(100dvh - 24px); padding: 0; border: 0; border-radius: 10px; color: var(--ink); box-shadow: 0 24px 80px #0004; }
.gallery-dialog::backdrop { background: #16302de6; }
.gallery-dialog[open] { display: flex; flex-direction: column; }
.gallery-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 8px 14px 8px 22px; border-bottom: 1px solid var(--line); flex-shrink: 0; }
.gallery-toolbar h2 { font-size: 14px; line-height: 1.5; font-weight: 600; }
.gallery-close { background: none; border: 0; color: var(--ink); width: 44px; height: 44px; font-size: 30px; line-height: 1; flex-shrink: 0; }
.gallery-image-area { overflow: auto; min-height: 0; overscroll-behavior: contain; background: #f7faf8; }
.gallery-image-area img { width: 100%; max-height: calc(100dvh - 160px); object-fit: contain; background: white; }
.gallery-image-area.is-zoomed img { width: max(100%, 1100px); max-width: none; max-height: none; height: auto; }
.gallery-controls { display: flex; justify-content: center; align-items: center; gap: 20px; padding: 9px 16px; border-top: 1px solid var(--line); flex-shrink: 0; }
.gallery-controls button { min-width: 44px; height: 44px; border: 1px solid var(--line); background: white; color: var(--accent-dark); border-radius: var(--radius); padding: 0 12px; }
.gallery-controls button:hover { background: var(--tint); }
.gallery-controls p { min-width: 36px; font-size: 12px; text-align: center; }
@media (max-width: 600px) {
  .header-inner { height: 58px; padding: 0 20px; }
  .breadcrumb { padding: 17px 20px 0; font-size: 10px; }
  .hero { padding: 22px 20px 32px; }
  .hero h1 { font-size: 49px; }
  .hero h1 > span { font-size: 25px; }
  .hero-kicker { font-size: 11px; }
  .hero-lead { font-size: 13px; margin-top: 15px; }
  .hero-image-link { max-width: 300px; }
  .product-tags { margin-bottom: 23px; }
  .product-tags li { padding: 0 9px; font-size: 11px; }
  .gallery-preview { gap: 6px; }
  .gallery-preview span { font-size: 9px; letter-spacing: -.06em; }
  .hero-actions { flex-direction: column; gap: 10px; align-items: center; margin-top: 24px; }
  .hero-actions .button { width: min(100%, 360px); }
  .intro-band { padding: 32px 20px; }
  .intro-band p { font-size: 17px; }
  .intro-band strong { font-size: 25px; }
  .mobile-break { display: block; }
  .section-nav { padding: 12px 2px; }
  .section-nav a { padding: 6px 11px; font-size: 10px; }
  .section { padding: 40px 22px; }
  .section-heading { margin-bottom: 26px; }
  .section-heading h2 { font-size: 24px; }
  .heading-lead { font-size: 14px; margin-bottom: 7px; }
  .feature-grid { gap: 24px 12px; }
  .feature-card { padding: 24px 10px 25px; }
  .feature-card p { font-size: 12px; }
  .feature-card h3 { font-size: 20px; }
  .footnote { font-size: 11px; }
  .ingredient-group { gap: 10px; padding: 22px 0; }
  .ingredient-group h3 { font-size: 19px; }
  .ingredient-index { padding-top: 5px; }
  .ingredient-group p { font-size: 13px; }
  .ingredient-names li { font-size: 13px; }
  .vet-message p { font-size: 13px; line-height: 2.1; }
  .feeding-layout { grid-template-areas: "heading heading" "photo dose"; column-gap: 22px; row-gap: 23px; align-items: center; }
  .feeding-heading h2 { font-size: 19px; }
  .feeding-heading strong { margin-top: 2px; font-size: 28px; }
  .feeding-photo figcaption { font-size: 10px; margin-top: 6px; }
  .feeding-dose { padding-bottom: 21px; }
  .feeding-dose-label { font-size: 12px; }
  .feeding-dose-value { margin: 5px 0 7px; font-size: 14px; gap: 6px; }
  .feeding-dose-value strong { font-size: 40px; }
  .usage-note { margin-top: 23px; padding-top: 16px; font-size: 11px; }
  .spec-table th, .spec-table td { padding: 13px 9px; font-size: 12px; }
  .spec-table th { width: 25%; }
  .disclosure summary { font-size: 13px; }
  .faq-list { gap: 10px; }
  .faq-item summary { gap: 8px; padding: 16px 38px 16px 16px; font-size: 13px; }
  .faq-item summary::after { right: 17px; }
  .faq-answer { padding: 0 16px 18px 40px; }
  .gallery-dialog { width: calc(100vw - 16px); max-height: calc(100dvh - 16px); }
  .gallery-toolbar { padding-left: 14px; }
  .gallery-toolbar h2 { font-size: 12px; }
  .gallery-controls { gap: 13px; }
}
@media (max-width: 360px) {
  .feature-card { padding-inline: 8px; }
  .feature-card p { min-height: 3.2em; }
  .feature-card h3 { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }