:root{--brand: #2563eb;--brand-dark: #1d4ed8;--brand-tint: #e9effd;--ink: #111318;--ink-mid: #5b6070;--ink-soft: #8b90a0;--line: #e5e7ef;--surface: #ffffff;--bg: #fafafb;--radius: 14px;--shadow-card: 0 1px 2px rgba(17, 19, 24, .04), 0 8px 24px rgba(17, 19, 24, .05);--shadow-phone: 0 18px 50px rgba(21, 44, 96, .22);--maxw: 1080px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.6;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}.top-nav{background:#ffffffe0;-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}.nav-container{max-width:var(--maxw);margin:0 auto;padding:14px 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.store-button{background:#fff;color:var(--ink)}.cta-band .store-button:hover{background:#f2f3f8}footer{background:var(--surface);border-top:1px solid var(--line);padding:34px 0}.footer-container{max-width:var(--maxw);margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}.footer-links{display:flex;gap:22px;flex-wrap:wrap}footer p{color:var(--ink-soft);font-size:14px}footer a{color:var(--ink-soft);text-decoration:none;font-size:14px;transition:color .2s}footer a:hover{color:var(--brand)}@media (max-width: 900px){.hero{grid-template-columns:1fr;gap:40px;padding:56px 0 64px;text-align:center}.hero h1{font-size:33px}.hero-description,.hero-note{margin-left:auto;margin-right:auto}.store-buttons{justify-content:center}.hero-visual{max-width:400px;margin:0 auto}.showcase-container{gap:52px}.showcase-row,.showcase-row:nth-child(2n){flex-direction:column;gap:26px;text-align:center}.showcase-image{flex:none}}@media (max-width: 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