:root {
  --color-aqua: #57b3dc;
  --color-aqua-light: #e9f7fb;
  --color-blue: #0878b9;
  --color-deep: #07345f;
  --color-pink: #ef4f9f;
  --color-green: #18a76b;
  --color-ink: #123c5d;
  --color-muted: #688298;
  --color-line: #d6e7f0;
  --color-paper: #f8f8f3;
  --color-surface: #ffffff;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --radius-sm: 3px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 4px;
  --shadow-sm: 0 1px 0 rgba(7, 52, 95, .08);
  --shadow-md: 0 10px 30px rgba(7, 52, 95, .08);
  --font-sans: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  --font-display: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  --font-numeric: "Avenir Next", "Helvetica Neue", "Arial Narrow", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--color-paper); }
body { margin: 0; color: var(--color-ink); background: var(--color-paper); font-family: var(--font-sans); font-size: 1rem; line-height: 1.7; -webkit-font-smoothing: auto; }
body.is-nav-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
p, h1, h2, h3, li, th, td, span { line-break: strict; overflow-wrap: anywhere; word-break: keep-all; }
h1, h2, h3, p { margin-block: 0; }
ul { list-style: none; margin: 0; padding: 0; }
:focus-visible { outline: 2px solid var(--color-pink); outline-offset: 4px; }
.container { width: min(1200px, calc(100% - 48px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: -60px; left: 16px; z-index: 200; padding: 12px 16px; color: white; background: var(--color-deep); border-radius: var(--radius-sm); }
.skip-link:focus { top: 16px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(248, 248, 243, .96); border-bottom: 1px solid var(--color-line); backdrop-filter: blur(14px); }
.header-inner { min-height: 80px; display: flex; align-items: center; gap: var(--space-6); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.brand-logo { width: 48px; height: 48px; object-fit: cover; border: 1px solid rgba(7, 52, 95, .12); border-radius: var(--radius-sm); }
.brand-copy { display: grid; gap: 0; }
.brand-copy strong { color: var(--color-deep); font-size: 1.08rem; font-weight: 900; line-height: 1.1; letter-spacing: .08em; }
.brand-copy small { color: #7891a3; font-size: .56rem; font-weight: 700; line-height: 1.2; letter-spacing: .08em; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-7); margin-left: auto; color: #557289; font-size: .78rem; font-weight: 700; }
.site-nav a, .mobile-nav a { transition: color 150ms ease, opacity 150ms ease; }
.site-nav a:hover, .mobile-nav a:hover { color: var(--color-blue); }
.header-cta { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-5); color: white; background: var(--color-deep); border-radius: var(--radius-pill); font-size: .75rem; font-weight: 800; white-space: nowrap; transition: transform 150ms ease, background 150ms ease; }
.header-cta:hover { background: var(--color-blue); transform: translateY(-2px); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 10px; margin-left: auto; border: 0; background: transparent; cursor: pointer; }
.nav-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px auto; background: var(--color-deep); transition: transform 150ms ease, opacity 150ms ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav { display: none; }

/* Common text */
.eyebrow { margin-bottom: var(--space-4); color: rgba(255,255,255,.88); font-size: .72rem; font-weight: 800; letter-spacing: .08em; line-height: 1.2; }
.eyebrow span { opacity: .58; }
.eyebrow--blue { color: var(--color-blue); }
.eyebrow--light { color: rgba(255,255,255,.8); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-3); min-height: 48px; padding-inline: var(--space-6); border: 1px solid transparent; border-radius: var(--radius-pill); font-size: .85rem; font-weight: 800; transition: transform 150ms ease, background 150ms ease, color 150ms ease; }
.button:hover { transform: translateY(-2px); }
.button-light { color: var(--color-deep); background: white; }
.button-light:hover { background: var(--color-aqua-light); }
.section { padding-block: var(--space-9); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: var(--space-8); margin-bottom: var(--space-8); }
.section-heading > p { max-width: 410px; color: var(--color-muted); font-size: .9rem; line-height: 1.9; }
h1, h2 { font-family: var(--font-display); }
h2 { color: var(--color-deep); font-size: clamp(2rem, 4vw, 3rem); line-height: 1.22; letter-spacing: -.055em; }
h2 em { color: var(--color-blue); font-style: normal; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 46%) minmax(0, 54%); min-height: 650px; padding: 24px; gap: 24px; background: var(--color-paper); }
.hero-copy { display: flex; align-items: center; color: var(--color-deep); background: white; border-top: 8px solid var(--color-aqua); }
.hero-copy-inner { width: min(100%, 600px); padding-block: var(--space-9); padding-left: clamp(32px, 5vw, 72px); padding-right: var(--space-6); }
.hero .eyebrow { color: var(--color-blue); }
.hero .eyebrow span { color: var(--color-aqua); opacity: 1; }
.hero h1 { color: var(--color-deep); font-size: clamp(2.75rem, 5.6vw, 5rem); font-weight: 700; line-height: 1.12; letter-spacing: -.08em; }
.hero h1 em { color: var(--color-aqua); font-style: normal; }
.hero-lead { max-width: 440px; margin-top: var(--space-6); color: var(--color-muted); font-size: .92rem; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: var(--space-5); margin-top: var(--space-7); }
.made-in { color: #86a0ad; font-family: var(--font-numeric); font-size: .68rem; font-weight: 800; letter-spacing: .12em; }
.hero-visual { position: relative; min-height: 650px; overflow: hidden; background: var(--color-deep); }
.hero-visual > img { width: 100%; height: 100%; object-fit: cover; object-position: 73% 34%; }
.hero-visual::after { position: absolute; inset: 16px; content: ""; border: 1px solid rgba(255,255,255,.7); pointer-events: none; }
.hero-stamp { position: absolute; right: 42px; bottom: 42px; z-index: 1; display: grid; place-items: center; width: 126px; min-height: 72px; padding: 12px; border: 1px solid var(--color-deep); border-radius: var(--radius-sm); color: var(--color-deep); background: rgba(255,255,255,.92); font-size: .65rem; font-weight: 800; line-height: 1.45; text-align: center; letter-spacing: .08em; }
.hero-stamp strong { display: inline-block; margin-right: 2px; font-family: var(--font-display); font-size: 2rem; line-height: 1; }
.vertical-note { position: absolute; top: var(--space-8); right: 28px; z-index: 1; color: white; font-size: .84rem; font-weight: 800; letter-spacing: .12em; writing-mode: vertical-rl; }

/* Formula */
.formula { color: white; background: var(--color-deep); }
.formula-grid { display: grid; grid-template-columns: 1.16fr 1fr 1fr; gap: 0; background: transparent; }
.formula-intro, .formula-card { min-height: 224px; padding: var(--space-7); background: var(--color-deep); }
.formula-intro, .formula-card { border-top: 1px solid rgba(255,255,255,.28); }
.formula-intro { display: flex; flex-direction: column; justify-content: center; }
.formula-intro h2 { color: white; }
.formula-intro h2 span { color: #8dd9f1; }
.formula-intro p:last-child { max-width: 340px; margin-top: var(--space-5); color: #b9d2e1; font-size: .82rem; line-height: 1.85; }
.formula-card { display: flex; flex-direction: column; justify-content: center; }
.formula-card--blue { background: #0c527f; }
.formula-card--green { background: #11855f; }
.formula-label { margin-bottom: var(--space-3); color: rgba(255,255,255,.76); font-family: var(--font-display); font-size: .68rem; font-weight: 800; letter-spacing: .16em; }
.formula-card strong { color: white; font-family: var(--font-numeric); font-size: clamp(2rem, 3.2vw, 3rem); line-height: 1; letter-spacing: -.05em; }
.formula-card small { font-family: var(--font-sans); font-size: 1rem; letter-spacing: 0; }
.formula-card p { margin-top: var(--space-4); color: rgba(255,255,255,.86); font-size: .8rem; line-height: 1.8; }

/* Points */
.points-section { background: var(--color-paper); }
.point-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 0; border-top: 1px solid var(--color-line); border-bottom: 1px solid var(--color-line); }
.point-item { position: relative; min-height: 288px; padding: var(--space-7); background: transparent; border-left: 1px solid var(--color-line); }
.point-item:last-child { border-right: 1px solid var(--color-line); }
.point-number { display: flex; align-items: center; justify-content: space-between; color: var(--color-blue); font-family: var(--font-numeric); font-size: 1.4rem; font-weight: 900; line-height: 1; }
.point-number span { color: #9ab2c2; font-size: .58rem; letter-spacing: .15em; }
.point-item:nth-child(2) .point-number { color: var(--color-green); }
.point-item:nth-child(3) .point-number { color: var(--color-pink); }
.point-item h3 { margin-top: var(--space-8); color: var(--color-deep); font-size: 1.4rem; line-height: 1.25; letter-spacing: -.04em; }
.point-item:first-child { min-height: 336px; padding: var(--space-8); }
.point-item:first-child h3 { font-size: 1.7rem; }
.point-item p { margin-top: var(--space-4); color: var(--color-muted); font-size: .82rem; line-height: 1.9; }
.point-arrow { display: none; }

/* Audience */
.audience-section { display: grid; grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); min-height: 660px; background: white; }
.audience-image { min-height: 660px; overflow: hidden; background: var(--color-aqua-light); }
.audience-image img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.audience-copy { display: flex; flex-direction: column; justify-content: center; padding: var(--space-9) clamp(32px, 7vw, 104px); }
.lead-copy { max-width: 420px; margin-top: var(--space-5); color: var(--color-muted); font-size: .9rem; line-height: 1.9; }
.audience-list { max-width: 500px; margin-top: var(--space-7); border-top: 1px solid var(--color-line); }
.audience-list li { display: flex; align-items: baseline; gap: var(--space-4); padding-block: var(--space-4); border-bottom: 1px solid var(--color-line); color: var(--color-ink); font-size: .82rem; font-weight: 700; }
.audience-list li span { color: var(--color-blue); font-family: var(--font-display); font-size: .78rem; }

/* How to */
.how-section { color: white; background: var(--color-aqua); }
.how-inner { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); align-items: center; gap: var(--space-9); }
.how-copy h2 { color: white; }
.how-copy h2 span { color: var(--color-deep); }
.how-copy > p:not(.eyebrow) { max-width: 420px; margin-top: var(--space-5); color: rgba(255,255,255,.9); font-size: .88rem; line-height: 1.9; }
.flavor-note { display: inline-block; margin-top: var(--space-6); color: rgba(255,255,255,.78); font-family: var(--font-display); font-size: .72rem; font-weight: 800; letter-spacing: .18em; }
.how-steps { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: var(--space-4); padding: var(--space-7); background: rgba(7,52,95,.16); border: 1px solid rgba(255,255,255,.3); border-radius: 0; }
.how-step { display: grid; gap: var(--space-3); min-width: 0; }
.how-step strong { color: var(--color-deep); font-family: var(--font-display); font-size: 2.1rem; line-height: 1; }
.how-step span { color: white; font-size: .78rem; font-weight: 700; line-height: 1.65; }
.how-line { width: 36px; height: 1px; background: rgba(255,255,255,.6); }

/* Product */
.product-section { background: var(--color-paper); }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.product-table-wrap, .nutrition { background: white; border: 1px solid var(--color-line); border-radius: 0; overflow: hidden; }
.product-table, .nutrition-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.product-table th, .product-table td, .nutrition-table th, .nutrition-table td { padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-line); text-align: left; vertical-align: top; }
.product-table tr:last-child th, .product-table tr:last-child td, .nutrition-table tr:last-child th, .nutrition-table tr:last-child td { border-bottom: 0; }
.product-table th, .nutrition-table th { width: 36%; color: var(--color-muted); font-weight: 700; }
.product-table td, .nutrition-table td { color: var(--color-deep); font-weight: 700; }
.nutrition-head { display: flex; align-items: end; justify-content: space-between; padding: var(--space-5); color: white; background: var(--color-deep); }
.nutrition-head p { font-size: .95rem; font-weight: 800; }
.nutrition-head strong { color: #9cdcec; font-size: .72rem; }
.nutrition-table td { text-align: right; }

/* Closing/footer */
.closing-section { color: white; background: var(--color-deep); }
.closing-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-7); padding-block: var(--space-9); }
.closing-inner h2 { color: white; }
.closing-inner > div > p:last-child { margin-top: var(--space-4); color: #bbd3e1; font-size: .88rem; }
.site-footer { color: white; background: #052747; }
.footer-inner { display: flex; align-items: center; gap: var(--space-7); min-height: 112px; }
.footer-inner .brand-copy strong { color: white; }
.footer-inner .brand-copy small { color: #9bbccc; }
.footer-trust { display: inline-flex; align-items: center; gap: var(--space-3); margin-left: auto; color: #b8d0dd; font-size: .72rem; font-weight: 700; }
.footer-trust img { width: 40px; height: 40px; object-fit: contain; mix-blend-mode: screen; border-radius: 50%; }
.footer-inner > p { color: #88a6b8; font-family: var(--font-display); font-size: .65rem; letter-spacing: .08em; }

@media (max-width: 1023px) {
  .container { width: min(100% - 40px, 880px); }
  .site-nav { gap: var(--space-4); }
  .header-cta { padding-inline: var(--space-4); }
  .hero-copy-inner { padding-right: var(--space-5); }
  .formula-intro, .formula-card { padding: var(--space-6); }
  .audience-copy { padding-inline: var(--space-7); }
  .how-inner { gap: var(--space-7); }
}

@media (max-width: 767px) {
  .container { width: min(100% - 32px, 560px); }
  .header-inner { min-height: 68px; gap: var(--space-4); }
  .brand-logo { width: 42px; height: 42px; }
  .brand-copy strong { font-size: .94rem; }
  .brand-copy small { font-size: .48rem; }
  .site-nav, .header-cta { display: none; }
  .nav-toggle { display: block; }
  .mobile-nav { display: grid; gap: 0; padding: var(--space-4) 16px 24px; background: white; border-top: 1px solid var(--color-line); }
  .mobile-nav[hidden] { display: none; }
  .mobile-nav a { padding: 14px 8px; border-bottom: 1px solid var(--color-line); color: var(--color-deep); font-size: .88rem; font-weight: 800; }
  .hero { grid-template-columns: 1fr; padding: 12px; gap: 12px; }
  .hero-copy-inner { padding-block: 72px 64px; padding-inline: 0; }
  .hero h1 { font-size: clamp(2.8rem, 14vw, 4rem); }
  .hero-lead { font-size: .86rem; }
  .hero-visual { min-height: 420px; }
  .hero-stamp { right: 20px; bottom: 20px; width: 104px; min-height: 64px; }
  .hero-stamp strong { font-size: 1.6rem; }
  .vertical-note { top: 20px; right: 16px; font-size: .68rem; }
  .formula-grid, .point-grid, .product-grid { grid-template-columns: 1fr; }
  .formula-intro, .formula-card { min-height: auto; padding: var(--space-6) var(--space-5); }
  .formula-intro { padding-block: 56px 44px; }
  .formula-card { min-height: 180px; }
  .section { padding-block: 64px; }
  .section-heading { display: block; margin-bottom: var(--space-7); }
  .section-heading > p { margin-top: var(--space-5); font-size: .84rem; }
  .point-item { min-height: 240px; padding: var(--space-6); }
  .point-item h3 { margin-top: var(--space-7); font-size: 1.25rem; }
  .audience-section { grid-template-columns: 1fr; }
  .audience-image { min-height: auto; }
  .audience-image img { width: 100%; height: auto; max-height: 540px; object-fit: contain; }
  .audience-copy { padding: 64px 16px; }
  .audience-list li { font-size: .78rem; }
  .how-inner { grid-template-columns: 1fr; gap: var(--space-7); padding-block: 64px; }
  .how-steps { grid-template-columns: 1fr; gap: var(--space-4); padding: var(--space-5); }
  .how-step { grid-template-columns: 48px 1fr; align-items: center; gap: var(--space-3); }
  .how-step strong { font-size: 1.65rem; }
  .how-line { width: 100%; height: 1px; }
  .product-table, .nutrition-table { font-size: .76rem; }
  .product-table th, .product-table td, .nutrition-table th, .nutrition-table td { padding: var(--space-3) var(--space-4); }
  .closing-inner { display: grid; padding-block: 64px; }
  .footer-inner { display: grid; grid-template-columns: 1fr auto; gap: var(--space-5); padding-block: 32px; }
  .footer-trust { margin-left: 0; }
  .footer-inner > p { grid-column: 1 / -1; }
}

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