:root {
    --navy: #07336c;
    --blue: #0879c9;
    --sky: #29a9e8;
    --ink: #10263e;
    --muted: #617488;
    --line: #d9e5ee;
    --soft: #f3f8fb;
    --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--white);
    color: var(--ink);
    font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

.site-header {
    height: 82px;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand img { display: block; width: 155px; height: auto; }
.company-link { display: flex; align-items: center; gap: 8px; color: var(--navy); font-size: 13px; font-weight: 700; }

.hero {
    position: relative;
    overflow: hidden;
    min-height: 475px;
    display: grid;
    place-items: center;
    background: radial-gradient(circle at 83% 15%, rgba(69,184,235,.26), transparent 26%), radial-gradient(circle at 13% 87%, rgba(17,124,195,.2), transparent 26%), linear-gradient(127deg, #052b5d 0%, #07579b 55%, #0989cd 100%);
    color: white;
}
.hero::before, .hero::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.17); border-radius: 50%; }
.hero::before { width: 520px; height: 520px; right: -120px; top: -270px; }
.hero::after { width: 320px; height: 320px; left: -80px; bottom: -210px; }
.hero-inner { position: relative; z-index: 1; width: min(1120px, calc(100% - 48px)); padding: 72px 0; text-align: center; }
.eyebrow { margin: 0 0 21px; font-size: 14px; font-weight: 700; letter-spacing: .12em; }
.eyebrow::before, .eyebrow::after { content: ""; display: inline-block; width: 32px; height: 1px; margin: 0 13px 5px; background: rgba(255,255,255,.6); }
.hero h1 { margin: 0; color: #fff !important; font-size: clamp(32px, 4.2vw, 58px); font-weight: 700; line-height: 1.35; letter-spacing: .04em; }
.hero h1 span { color: #fff !important; }
.hero-copy { margin: 23px 0 0; color: rgba(255,255,255,.88); font-size: 16px; line-height: 2; }
.jump-link { display: inline-flex; align-items: center; gap: 13px; margin-top: 30px; padding: 12px 24px; border: 1px solid rgba(255,255,255,.5); border-radius: 999px; font-size: 13px; font-weight: 700; transition: .2s ease; }
.jump-link:hover, .jump-link:focus-visible { background: white; color: var(--navy); transform: translateY(-2px); }

.selector { max-width: 1180px; margin: 0 auto; padding: 88px 28px 92px; }
.section-heading { text-align: center; }
.section-heading p { margin: 0 0 10px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.section-heading h2 { margin: 0; color: var(--navy); font-size: clamp(27px, 3vw, 39px); letter-spacing: .04em; }
.section-heading > span { display: block; margin-top: 14px; color: var(--muted); font-size: 14px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 47px; }
.product-card {
    --accent: var(--blue);
    display: flex;
    flex-direction: column;
    min-height: 510px;
    padding: 30px;
    border: 1px solid var(--line);
    border-top: 5px solid var(--accent);
    border-radius: 15px;
    background: white;
    box-shadow: 0 14px 42px rgba(13,50,82,.08);
    transition: transform .22s ease, box-shadow .22s ease;
}
.product-card:hover { transform: translateY(-5px); box-shadow: 0 22px 55px rgba(13,50,82,.14); }
.product-card.sky { --accent: var(--sky); }
.product-card.blue { --accent: var(--blue); }
.product-card.navy { --accent: var(--navy); }
.card-topline { display: flex; align-items: center; justify-content: space-between; color: var(--accent); }
.card-topline svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.scale-badge { padding: 6px 11px; border-radius: 4px; background: #edf7fc; color: var(--accent); font-size: 12px; font-weight: 800; }
.room-count { margin: 25px 0 4px; color: var(--muted); font-size: 13px; font-weight: 700; }
.product-banner { margin: 12px -4px 0; min-height: 76px; display: flex; align-items: center; }
.product-banner img { display: block; width: 100%; height: auto; }
.reading { margin: 6px 0 21px; color: #91a1b1; font-size: 11px; letter-spacing: .15em; }
.product-lead { margin: 0 0 12px; color: var(--ink); font-size: 16px; font-weight: 800; line-height: 1.65; }
.description { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.product-card ul { margin: 21px 0 25px; padding: 18px 0 0; border-top: 1px solid #e8eff4; list-style: none; }
.product-card li { display: flex; align-items: center; gap: 8px; margin: 8px 0; color: #3d5369; font-size: 12px; font-weight: 700; }
.check { color: var(--accent); font-size: 17px; }
.product-link { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 17px; border-radius: 6px; background: var(--accent); color: white; font-size: 13px; font-weight: 800; transition: filter .2s ease; }
.product-link:hover, .product-link:focus-visible { filter: brightness(.88); }

.help-box { margin-top: 35px; padding: 25px 30px; display: flex; align-items: center; justify-content: space-between; gap: 25px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.help-box p { margin: 0 0 6px; color: var(--navy); font-weight: 800; }
.help-box div > span { color: var(--muted); font-size: 13px; }
.contact-banner { flex: 0 1 370px; display: block; border-radius: 6px; overflow: hidden; box-shadow: 0 7px 20px rgba(13,50,82,.12); transition: .2s ease; }
.contact-banner img { display: block; width: 100%; height: auto; }
.contact-banner:hover, .contact-banner:focus-visible { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(13,50,82,.2); }

.site-footer { padding: 46px 28px 34px; text-align: center; background: #06284e; color: white; }
.footer-brand { display: inline-block; padding: 8px 13px; border-radius: 5px; background: white; }
.footer-brand img { display: block; width: 145px; height: auto; }
.site-footer p { margin: 19px 0 27px; color: #b8c9d8; font-size: 13px; }
.site-footer > small { color: #718ba4; font-size: 10px; }

@media (max-width: 900px) {
    .product-grid { grid-template-columns: 1fr; max-width: 640px; margin-right: auto; margin-left: auto; }
    .product-card { min-height: auto; }
}
@media (max-width: 640px) {
    .site-header { height: 70px; padding: 0 18px; }
    .brand img { width: 130px; }
    .company-link { font-size: 0; }
    .company-link span { font-size: 22px; }
    .hero { min-height: 470px; }
    .hero-inner { width: calc(100% - 36px); padding: 62px 0; }
    .eyebrow { font-size: 12px; }
    .eyebrow::before, .eyebrow::after { width: 18px; margin-right: 7px; margin-left: 7px; }
    .hero h1 { font-size: 30px; line-height: 1.5; }
    .hero-copy { font-size: 14px; line-height: 1.9; }
    .desktop { display: none; }
    .selector { padding: 64px 18px 70px; }
    .section-heading > span { font-size: 12px; }
    .product-grid { gap: 18px; margin-top: 35px; }
    .product-card { padding: 25px 22px; }
    .help-box { padding: 23px; flex-direction: column; align-items: stretch; text-align: center; }
    .contact-banner { flex-basis: auto; width: min(100%, 370px); margin: 0 auto; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .01ms !important; }
}