:root{
  --bg:#f7fafb;
  --navy:#122c47;
  --navy2:#1a3c60;
  --tint:#eaf3f9;
  --accent:#b3915c;
  --accent-light:#d8bd8c;
  --text:#25313e;
  --muted:#64758a;
  --white:#ffffff;
  --radius:10px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.logo{
  font-family:"Noto Serif JP","Hiragino Mincho ProN",serif;
  letter-spacing:.03em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* notice ribbon */
.notice{
  background:var(--navy2);
  color:#dfeaf4;
  font-size:.8rem;
  text-align:center;
  padding:9px 16px;
  line-height:1.6;
}

/* header */
header.site{
  background:rgba(255,255,255,.96);
  border-bottom:1px solid #e2e9ef;
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(6px);
}
header.site .bar{
  max-width:var(--maxw);margin:0 auto;padding:18px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.logo{font-size:1.34rem;color:var(--navy);font-weight:700;}
.logo span{color:var(--accent);}
.logo small{display:block;font-family:"Noto Sans JP",sans-serif;font-size:.62rem;letter-spacing:.2em;color:var(--accent);font-weight:700;margin-top:2px;}
nav.main{display:flex;gap:22px;}
nav.main a{font-size:.86rem;color:var(--navy);opacity:.78;transition:opacity .2s;white-space:nowrap;}
nav.main a:hover{opacity:1;color:var(--accent);}
nav.main a.current{color:var(--accent);opacity:1;font-weight:700;}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.hamburger span{width:24px;height:2px;background:var(--navy);display:block;}

/* hero */
.hero{position:relative;color:#fff;display:flex;align-items:center;min-height:76vh;background-size:cover;background-position:center;}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,44,71,.5),rgba(18,44,71,.82));}
.hero .wrap{position:relative;z-index:2;}
.hero-small{min-height:34vh;}
.hero .eyebrow{color:var(--accent-light);font-size:.78rem;letter-spacing:.18em;font-weight:700;display:block;margin-bottom:16px;}
.hero h1{font-size:2.4rem;line-height:1.6;margin-bottom:20px;}
.hero p{font-size:1rem;max-width:520px;color:#eaf0f6;margin-bottom:30px;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:13px 32px;border-radius:var(--radius);
  font-size:.9rem;font-weight:700;transition:transform .15s,background .2s,opacity .2s;
}
.btn-gold{background:var(--accent);color:#fff;}
.btn-gold:hover{background:var(--accent-light);}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);}
.btn-navy{background:var(--navy);color:#fff;}
.btn-navy:hover{opacity:.88;}

/* sections */
section{padding:80px 0;}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px;}
.section-head .eyebrow{color:var(--accent);font-size:.78rem;letter-spacing:.16em;font-weight:700;display:block;margin-bottom:10px;}
.section-head h2{font-size:1.68rem;margin-bottom:14px;color:var(--navy);}
.section-head p{color:var(--muted);font-size:.94rem;}
.bg-navy{background:var(--navy);color:#eef3f8;}
.bg-navy .section-head p{color:#b9c8d8;}
.bg-navy .section-head h2{color:#fff;}
.bg-navy .muted{color:#b9c8d8;}
.bg-tint{background:var(--tint);}

/* features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.feature{text-align:center;padding:0 10px;}
.feature .num{
  width:48px;height:48px;border-radius:50%;border:1px solid var(--accent);
  color:var(--accent);display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;font-family:"Noto Serif JP",serif;
}
.feature h3{font-size:.98rem;margin-bottom:10px;color:var(--navy);}
.feature p{font-size:.85rem;color:var(--muted);}

/* product grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid.cols-4{grid-template-columns:repeat(4,1fr);}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 20px rgba(18,44,71,.08);}
.card .thumb{aspect-ratio:4/3;overflow:hidden;}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s;}
.card:hover .thumb img{transform:scale(1.06);}
.card-body{padding:22px 22px 26px;}
.card-body .tag{font-size:.72rem;color:var(--accent);font-weight:700;letter-spacing:.06em;display:block;margin-bottom:8px;}
.card-body h3{font-size:1.02rem;margin-bottom:10px;color:var(--navy);}
.card-body p{font-size:.85rem;color:var(--muted);margin-bottom:14px;}
.price{font-size:.82rem;color:var(--muted);margin-bottom:14px;display:block;}
.card-body .btn{width:100%;text-align:center;padding:12px;font-size:.85rem;}
.buy-note{font-size:.72rem;color:var(--muted);margin-top:8px;text-align:center;}

/* two-col */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.two-col img{border-radius:var(--radius);}
.two-col h2{font-size:1.55rem;margin-bottom:18px;color:var(--navy);}
.two-col.bg-navy h2{color:#fff;}
.two-col p{color:var(--muted);font-size:.92rem;margin-bottom:16px;}
.two-col.bg-navy p{color:#c3d1e0;}

/* value list */
.value-list{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:20px;}
.value-list li{list-style:none;background:#fff;padding:28px 24px;border-radius:var(--radius);box-shadow:0 2px 18px rgba(18,44,71,.06);}
.value-list li b{display:block;color:var(--accent);font-size:.78rem;letter-spacing:.1em;margin-bottom:10px;}
.value-list li span{font-size:.88rem;color:var(--muted);}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.gallery img{border-radius:var(--radius);aspect-ratio:1/1;object-fit:cover;width:100%;}

/* spec / data table */
.table-spec{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 18px rgba(18,44,71,.06);}
.table-spec th,.table-spec td{padding:16px 20px;text-align:left;font-size:.88rem;border-bottom:1px solid #eef2f6;}
.table-spec th{background:var(--navy);color:#fff;font-weight:700;width:220px;font-family:"Noto Sans JP",sans-serif;}
.table-spec tr:last-child th,.table-spec tr:last-child td{border-bottom:none;}
.table-spec td{color:var(--muted);}

/* nutrition mini table */
.nutri{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#dfe7ee;border-radius:var(--radius);overflow:hidden;margin-top:18px;}
.nutri div{background:#fff;padding:16px 12px;text-align:center;}
.nutri .h{background:var(--tint);font-weight:700;color:var(--navy);font-size:.78rem;}
.nutri .v{font-size:.86rem;color:var(--muted);}

/* testimonials */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.testi{background:#fff;border-radius:var(--radius);padding:30px 26px;box-shadow:0 2px 18px rgba(18,44,71,.07);}
.testi .stars{color:var(--accent);font-size:.85rem;margin-bottom:14px;letter-spacing:.1em;}
.testi p.quote{font-size:.9rem;color:var(--text);margin-bottom:20px;min-height:96px;}
.testi .who{display:flex;align-items:center;gap:12px;}
.avatar{
  width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:"Noto Serif JP",serif;font-size:.95rem;font-weight:700;flex-shrink:0;
}
.who .meta{font-size:.8rem;color:var(--muted);}
.who .meta b{display:block;color:var(--navy);font-size:.88rem;}

/* step flow */
.step-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;counter-reset:step;}
.step{text-align:center;position:relative;padding:0 14px;}
.step .circle{
  width:64px;height:64px;border-radius:50%;background:var(--navy);color:#fff;
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
  font-family:"Noto Serif JP",serif;font-size:1.2rem;position:relative;z-index:2;
}
.step:nth-child(even) .circle{background:var(--accent);}
.step h3{font-size:.94rem;margin-bottom:8px;color:var(--navy);}
.step p{font-size:.82rem;color:var(--muted);}
.step-connector{position:absolute;top:32px;left:50%;width:100%;height:2px;background:#dbe4ec;z-index:1;}
.step:last-child .step-connector{display:none;}

/* FAQ */
.faq-item{background:#fff;border-radius:var(--radius);padding:22px 26px;margin-bottom:14px;box-shadow:0 2px 14px rgba(18,44,71,.06);}
.faq-item .q{font-weight:700;color:var(--navy);font-size:.92rem;margin-bottom:10px;display:flex;gap:10px;}
.faq-item .q span{color:var(--accent);}
.faq-item .a{font-size:.86rem;color:var(--muted);padding-left:26px;}

/* video block */
.video-block{position:relative;border-radius:var(--radius);overflow:hidden;max-width:820px;margin:0 auto;}
.video-block img{width:100%;}
.play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(18,44,71,.32);}
.play .circle{width:74px;height:74px;border-radius:50%;background:rgba(255,255,255,.94);display:flex;align-items:center;justify-content:center;}
.play .circle::after{content:"";border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent var(--navy);margin-left:5px;}
.video-caption{text-align:center;font-size:.8rem;color:var(--muted);margin-top:14px;}

/* cta band */
.cta-band{background:var(--navy);color:#fff;text-align:center;padding:72px 0;}
.cta-band h2{font-size:1.6rem;margin-bottom:14px;}
.cta-band p{color:#c3d1e0;margin-bottom:30px;}

/* contact form */
.contact-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;}
form.contact-form label{display:block;font-size:.85rem;margin-bottom:8px;color:var(--muted);}
form.contact-form .field{margin-bottom:22px;}
form.contact-form input,form.contact-form select,form.contact-form textarea{
  width:100%;padding:13px 14px;border:1px solid #dbe2ea;border-radius:var(--radius);
  font-family:inherit;font-size:.92rem;background:#fff;
}
form.contact-form textarea{min-height:150px;resize:vertical;}
form.contact-form .checks{font-size:.82rem;color:var(--muted);display:flex;align-items:flex-start;gap:8px;margin-bottom:22px;}
.form-note{font-size:.76rem;color:var(--muted);margin-top:10px;}
.contact-info{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:0 2px 18px rgba(18,44,71,.06);}
.contact-info h3{font-size:1rem;margin-bottom:16px;color:var(--navy);}
.contact-info dl{font-size:.88rem;color:var(--muted);}
.contact-info dt{color:var(--text);font-weight:700;margin-top:14px;}
.contact-info dt:first-child{margin-top:0;}

/* footer */
footer.site{background:var(--navy);color:#b9c8d8;padding:50px 0 26px;}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:36px;}
footer.site h4{color:#fff;font-size:.9rem;margin-bottom:14px;}
footer.site a{font-size:.85rem;color:#b9c8d8;display:block;margin-bottom:8px;}
footer.site a:hover{color:var(--accent-light);}
footer.site p{font-size:.85rem;color:#9aabc0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;font-size:.75rem;color:#8496ab;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}

/* responsive */
@media (max-width:960px){
  .features{grid-template-columns:repeat(2,1fr);}
  .grid,.grid.cols-4,.value-list,.gallery,.testi-grid,.step-flow,.nutri{grid-template-columns:repeat(2,1fr);}
  .two-col,.contact-layout{grid-template-columns:1fr;gap:32px;}
  footer.site .cols{grid-template-columns:1fr 1fr;}
  .step-connector{display:none;}
}
@media (max-width:640px){
  nav.main{
    position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e2e9ef;
    flex-direction:column;gap:0;max-height:0;overflow:hidden;transition:max-height .25s;
  }
  nav.main.open{max-height:380px;}
  nav.main a{padding:16px 24px;border-top:1px solid #eef2f6;}
  .hamburger{display:flex;}
  header.site .bar{position:relative;}
  .hero h1{font-size:1.65rem;}
  .features,.grid,.grid.cols-4,.value-list,.gallery,.testi-grid,.step-flow,.nutri{grid-template-columns:1fr;}
  section{padding:56px 0;}
  footer.site .cols{grid-template-columns:1fr;}
  .table-spec th{width:130px;font-size:.8rem;}
}