:root {
  --cream: #F5F4F2;
  --warm-white: #FAFAF8;
  --charcoal: #2A2521;
  --muted: #8A8078;
  --gold: #B8A898;
  --line: rgba(42,37,33,0.1);
  --belle-50: #F3F3F8;
  --belle-100: #E8E8F4;
  --belle-200: #CCCCE8;
  --belle-400: #8888C8;
  --belle-600: #5A5A9A;
  --belle-800: #3C3C6E;
  --lavender: #C8C8E8;
  --teal: #1E3A3A;
  --prod-accent: #6A8FA8; /* エッセンス固有カラー：落ち着いたスレートブルー */
  --prod-bg: #E8EFF5;
  --font-display: 'メイリオ', serif;
  --font-jp: 'メイリオ', serif;
  --font-body: 'メイリオ', sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--warm-white);color:var(--charcoal);font-family:var(--font-body);font-weight:300;line-height:1.8;overflow-x:hidden;}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes pulse{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.3)}}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s ease,transform .8s ease;}
.reveal.visible{opacity:1;transform:none;}

.ichiha-bar{background:var(--teal);height:36px;display:flex;align-items:center;padding:0 48px;gap:24px;}
.ichiha-logo{font-size:14px;letter-spacing:.28em;color:rgba(255,255,255,.9);font-weight:600;}
.ichiha-links{display:flex;gap:24px;margin-left:auto;}
.ichiha-links a{font-size: 12px;letter-spacing:.18em;color:rgba(255,255,255,.5);text-decoration:none;transition:color .2s;}
.ichiha-links a:hover,.ichiha-links a.active{color:#fff;}
.ichiha-links a.active{color:var(--lavender);}

nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;padding:0 48px;height:68px;background:rgba(250,250,248,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.nav-logo{font-family:var(--font-display);font-size:22px;font-weight:400;letter-spacing:.18em;text-decoration:none;color:var(--charcoal);}
.nav-center{display:flex;gap:32px;list-style:none;margin:0 auto;}
.nav-center a{font-size: 12px;letter-spacing:.2em;text-transform:uppercase;text-decoration:none;color:var(--charcoal);transition:color .2s;}
.nav-center a:hover{color:var(--belle-400);}
.nav-right{display:flex;align-items:center;gap:16px;}
.nav-cart{font-size: 12px;font-weight: bold;letter-spacing:.15em;color:var(--charcoal);text-decoration:none;padding:7px 18px;border:1px solid var(--charcoal);transition:all .2s;}
.nav-cart:hover{background:var(--charcoal);color:#fff;}

.breadcrumb{padding:16px 80px;font-size:11px;letter-spacing:.08em;color:var(--muted);display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);}
.breadcrumb a{color:var(--muted);text-decoration:none;}
.breadcrumb a:hover{color:var(--charcoal);}
.breadcrumb-sep{opacity:.4;}

/* Hero — essence bottle layout */
.product-hero{display:grid;grid-template-columns:1fr 1fr;min-height:90vh;}
.product-hero-visual{position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:80px 60px;background:var(--prod-bg);}
.product-hero-visual::before{content:'';position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(106,143,168,.13) 0%,transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none;}
.product-hero-visual::after{content:'03';position:absolute;font-family:var(--font-display);font-size:220px;font-weight:300;font-style:italic;color:rgba(106,143,168,.07);bottom:-30px;right:-20px;line-height:1;pointer-events:none;}
.product-mockup-large{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;}
/* Bottle shape */
.product-bottle{width:140px;height:240px;background:linear-gradient(170deg,#ECF2F8 0%,#D8E8F2 100%);border-radius:48px 48px 12px 12px;border:1px solid rgba(106,143,168,.3);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;box-shadow:0 24px 64px rgba(42,80,110,.12),0 4px 12px rgba(42,80,110,.06);animation:fadeUp 1s ease both;position:relative;}
.bottle-cap{width:60px;height:24px;background:var(--belle-800);border-radius:6px;position:absolute;top:-12px;}
.bottle-name{font-family:var(--font-display);font-size: 12px;letter-spacing:.2em;color:var(--belle-800);text-align:center;padding:0 16px;}
.product-mockup-shadow{width:120px;height:16px;background:radial-gradient(ellipse,rgba(42,80,110,.15) 0%,transparent 70%);margin-top:4px;}
.product-badge-daily{position:absolute;top:40px;left:40px;background:var(--prod-accent);color:#fff;padding:6px 16px;font-size: 12px;letter-spacing:.2em;text-transform:uppercase;}

.product-hero-info{padding:80px 72px;display:flex;flex-direction:column;justify-content:center;background:var(--warm-white);}
.prod-eyebrow{font-size: 11px;letter-spacing:.35em;text-transform:uppercase;color:var(--prod-accent);margin-bottom:8px;}
.prod-number{font-family:var(--font-display);font-size:13px;letter-spacing:.3em;color:var(--muted);margin-bottom:6px;}
.prod-name-jp{font-family:var(--font-jp);font-size:clamp(22px,2.8vw,34px);font-weight:400;letter-spacing:.1em;line-height:1.4;margin-bottom:4px;animation:fadeUp .9s .1s ease both;}
.prod-name-en{font-family:var(--font-display);font-size:14px;font-style:italic;letter-spacing:.12em;color:var(--muted);margin-bottom:24px;animation:fadeUp .9s .15s ease both;}
.prod-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px;animation:fadeUp .9s .2s ease both;}
.prod-tag{font-size: 12px;padding:5px 14px;background:var(--belle-50);color:var(--belle-800);border-radius:14px;letter-spacing:.08em;border:1px solid var(--belle-200);}
.prod-catch{font-family:var(--font-jp);font-size:13px;letter-spacing:.08em;color:var(--belle-600);background:var(--belle-50);padding:8px 14px;border-left:2px solid var(--prod-accent);margin-bottom:20px;animation:fadeUp .9s .25s ease both;}
.prod-description{font-size:14px;line-height:2.2;color:var(--muted);margin-bottom:24px;max-width:460px;animation:fadeUp .9s .3s ease both;}

/* Stat bars */
.stat-bars{margin-bottom:28px;display:flex;flex-direction:column;gap:10px;animation:fadeUp .9s .32s ease both;}
.stat-bar-row{display:flex;align-items:center;gap:12px;}
.stat-bar-label{font-size:11px;color:var(--charcoal);width:130px;flex-shrink:0;}
.stat-bar-track{flex:1;height:5px;background:var(--belle-100);border-radius:3px;overflow:hidden;}
.stat-bar-fill{height:100%;background:linear-gradient(90deg,var(--prod-accent),var(--belle-800));border-radius:3px;transition:width 1.2s ease;}
.stat-bar-val{font-size:12px;color:var(--belle-400);width:16px;}

.price-row{display:flex;align-items:baseline;gap:12px;margin-bottom:8px;animation:fadeUp .9s .4s ease both;}
.price-main{font-family:var(--font-display);font-size:36px;font-weight:400;color:var(--charcoal);}
.price-sub{font-size:12px;color:var(--muted);}
.price-unit{font-size:12px;color:var(--belle-600);margin-bottom:20px;animation:fadeUp .9s .42s ease both;}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;animation:fadeUp .9s .45s ease both;}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 40px;background:var(--belle-800);color:#fff;text-decoration:none;font-size:11px;letter-spacing:.2em;text-transform:uppercase;border:none;cursor:pointer;font-family:var(--font-body);transition:background .2s,transform .15s;}
.btn-primary:hover{background:var(--belle-600);transform:translateY(-1px);}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 32px;border:1px solid var(--belle-800);color:var(--belle-800);text-decoration:none;font-size:11px;letter-spacing:.2em;text-transform:uppercase;background:transparent;cursor:pointer;font-family:var(--font-body);transition:all .2s;}
.btn-outline:hover{background:var(--belle-800);color:#fff;}
.btn-line{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 24px;background:#06C755;color:#fff;font-size:11px;letter-spacing:.1em;border:none;cursor:pointer;font-family:var(--font-body);transition:background .2s;}
.btn-line:hover{background:#05B04B;}
.ai-consult{font-size:11px;color:var(--belle-400);cursor:pointer;display:flex;align-items:center;gap:6px;margin-top:4px;animation:fadeUp .9s .5s ease both;}
.ai-consult:hover{color:var(--belle-800);}

.guarantee-bar{display:flex;gap:0;border-top:1px solid var(--line);margin-top:24px;padding-top:20px;animation:fadeUp .9s .52s ease both;}
.guarantee-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:0 8px;text-align:center;border-right:1px solid var(--line);}
.guarantee-item:last-child{border-right:none;}
.guarantee-item svg{width:20px;height:20px;stroke:var(--belle-400);fill:none;stroke-width:1.5;}
.guarantee-item span{font-size: 11px;letter-spacing:.08em;color:var(--muted);}

/* Tabs */
.detail-section{padding:80px 80px;background:var(--warm-white);}
.detail-inner{max-width:1100px;margin:0 auto;}
.tab-nav{display:flex;border-bottom:1px solid var(--line);margin-bottom:56px;}
.tab-btn{padding:14px 32px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-1px;cursor:pointer;font-family:var(--font-body);transition:color .2s,border-color .2s;}
.tab-btn.active{color:var(--belle-800);border-bottom-color:var(--prod-accent);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}

.ingr-section-title{font-family:var(--font-display);font-size:clamp(22px,2.5vw,32px);font-weight:300;letter-spacing:.04em;margin-bottom:8px;}
.ingr-section-sub{font-size:13px;color:var(--muted);line-height:2;margin-bottom:40px;max-width:560px;}
.ingr-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;margin-bottom:36px;}
.ingr-card{background:var(--cream);padding:28px;}
.ingr-card-name{font-family:var(--font-jp);font-size:14px;font-weight:400;letter-spacing:.06em;margin-bottom:6px;}
.ingr-card-en{font-size: 12px;letter-spacing:.15em;color:var(--prod-accent);margin-bottom:10px;text-transform:uppercase;}
.ingr-card-body{font-size:12px;color:var(--muted);line-height:1.9;}
.ingr-card-badge{display:inline-flex;align-items:center;height:20px;padding:0 10px;background:var(--belle-50);border:1px solid var(--belle-200);border-radius:10px;font-size: 11px;color:var(--belle-800);letter-spacing:.06em;margin-top:10px;}

/* 5成分サポートブロック */
.factor5-block{background:var(--belle-800);padding:32px 36px;margin-bottom:32px;}
.factor5-title{font-family:var(--font-display);font-size:18px;font-style:italic;color:#fff;margin-bottom:20px;}
.factor5-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:2px;}
.factor5-item{background:rgba(255,255,255,.06);padding:16px 12px;text-align:center;}
.factor5-name{font-size:11px;font-weight:500;color:#fff;letter-spacing:.04em;margin-bottom:5px;}
.factor5-role{font-size: 12px;color:rgba(255,255,255,.45);line-height:1.6;}

.additive-free-title{font-size:11px;letter-spacing:.25em;text-transform:uppercase;color:var(--belle-600);margin-bottom:16px;}
.additive-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:3px;}
.additive-chip{padding:12px 8px;background:white;text-align:center;font-size:11px;color:var(--muted);border:1px solid var(--line);}
.additive-chip::before{content:'✓';display:block;font-size:14px;color:var(--belle-400);margin-bottom:3px;}

/* Howto */
.howto-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;margin-bottom:32px;}
.howto-card{background:var(--cream);padding:40px 32px;}
.howto-num{width:44px;height:44px;border-radius:50%;background:var(--belle-800);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:18px;margin-bottom:20px;}
.howto-icon{width:64px;height:64px;border-radius:50%;background:var(--belle-50);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.howto-icon svg{width:28px;height:28px;stroke:var(--belle-800);fill:none;stroke-width:1.5;}
.howto-title{font-size:13px;font-weight:500;letter-spacing:.06em;margin-bottom:8px;}
.howto-body{font-size:12px;color:var(--muted);line-height:1.9;}
.howto-time{display:inline-flex;align-items:center;height:24px;padding:0 14px;background:var(--belle-800);color:#fff;border-radius:12px;font-size: 12px;letter-spacing:.1em;margin-top:12px;}
.routine-block{background:var(--charcoal);padding:32px 36px;margin-bottom:32px;}
.routine-title{font-family:var(--font-display);font-size:18px;font-style:italic;color:#fff;margin-bottom:20px;}
.routine-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;}
.routine-step{background:rgba(255,255,255,.05);padding:20px 16px;text-align:center;}
.routine-step-num{font-family:var(--font-display);font-size:28px;font-weight:300;color:var(--lavender);line-height:1;margin-bottom:8px;}
.routine-step-name{font-size:11px;color:#fff;letter-spacing:.06em;margin-bottom:4px;}
.routine-step-prod{font-size: 12px;color:rgba(255,255,255,.45);}
.routine-step.highlight{background:rgba(136,136,200,.2);border:1px solid rgba(136,136,200,.3);}
.howto-tip{background:var(--belle-50);border:1px solid var(--belle-200);padding:20px 24px;font-size:13px;color:var(--charcoal);line-height:2;}
.howto-tip strong{color:var(--belle-800);}

/* Test */
.test-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;margin-bottom:24px;}
.test-card{background:var(--charcoal);padding:36px 28px;text-align:center;}
.test-card-num{font-family:var(--font-display);font-size:56px;font-weight:300;color:#fff;line-height:1;}
.test-card-num span{font-size:24px;}
.test-card-label{font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.1em;margin-top:8px;line-height:1.7;}
.test-card-note{font-size: 12px;color:rgba(255,255,255,.3);margin-top:6px;}
.test-bar-section{margin-bottom:32px;}
.test-bar-title{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--belle-600);margin-bottom:16px;}
.test-bar-item{display:flex;align-items:center;gap:16px;margin-bottom:12px;padding:14px 20px;background:var(--cream);}
.test-bar-item-label{font-size:12px;color:var(--charcoal);width:140px;flex-shrink:0;}
.test-bar-track{flex:1;height:6px;background:var(--belle-100);border-radius:3px;overflow:hidden;}
.test-bar-fill-item{height:100%;background:linear-gradient(90deg,var(--prod-accent),var(--belle-800));border-radius:3px;}
.test-bar-check{font-size:16px;color:var(--belle-400);flex-shrink:0;}
.test-disclaimer{font-size:11px;color:var(--muted);line-height:2;padding:20px 0;border-top:1px solid var(--line);}

/* Cross */
.cross-section{padding:80px 80px;background:var(--cream);}
.cross-inner{max-width:1100px;margin:0 auto;}
.section-label{font-size: 11px;letter-spacing:.35em;text-transform:uppercase;color:var(--belle-400);display:block;margin-bottom:12px;}
.section-title{font-family:var(--font-display);font-size:clamp(24px,3vw,40px);font-weight:300;letter-spacing:.04em;margin-bottom:40px;}
.section-title em{font-style:italic;color:var(--gold);}
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;}
.cross-card{background:white;display:grid;grid-template-columns:200px 1fr;overflow:hidden;text-decoration:none;color:inherit;transition:box-shadow .3s;}
.cross-card:hover{box-shadow:0 8px 32px rgba(60,60,110,.1);}
.cross-img{display:flex;align-items:center;justify-content:center;min-height:200px;}
.cross-info{padding:28px;display:flex;flex-direction:column;justify-content:center;}
.cross-num{font-size: 12px;letter-spacing:.25em;color:var(--muted);margin-bottom:4px;}
.cross-name{font-family:var(--font-jp);font-size:16px;font-weight:400;letter-spacing:.06em;margin-bottom:4px;}
.cross-en{font-size: 12px;color:var(--muted);letter-spacing:.12em;margin-bottom:10px;}
.cross-desc{font-size:12px;color:var(--muted);line-height:1.9;margin-bottom:14px;}
.cross-price{font-family:var(--font-display);font-size:22px;color:var(--belle-800);margin-bottom:14px;}
.cross-link{font-size: 12px;letter-spacing:.18em;text-transform:uppercase;color:var(--belle-800);display:flex;align-items:center;gap:6px;}
.cross-link::after{content:'→';}

/* Reviews */
.review-section{padding:80px 80px;background:var(--warm-white);}
.review-inner{max-width:1100px;margin:0 auto;}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;}
.review-card{background:white;border:1px solid var(--line);padding:28px 24px;}
.review-stars{display:flex;gap:3px;margin-bottom:12px;}
.review-stars span{font-size:14px;color:#E8B84B;}
.review-text{font-size:13px;color:var(--charcoal);line-height:1.9;margin-bottom:14px;}
.review-meta{display:flex;align-items:center;gap:10px;}
.review-avatar{width:32px;height:32px;border-radius:50%;background:var(--belle-50);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:14px;color:var(--belle-600);}
.review-name{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.review-date{font-size: 12px;color:var(--muted);margin-left:auto;}
.review-summary{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;background:var(--belle-50);border:1px solid var(--belle-200);padding:32px 36px;margin-bottom:32px;}
.review-avg-num{font-family:var(--font-display);font-size:72px;font-weight:300;color:var(--belle-800);line-height:1;text-align:center;}
.review-avg-label{font-size:11px;letter-spacing:.1em;color:var(--muted);margin-top:4px;text-align:center;}
.review-bars{display:flex;flex-direction:column;gap:8px;}
.review-bar-row{display:flex;align-items:center;gap:10px;}
.review-bar-label{font-size:11px;color:var(--muted);width:24px;text-align:right;}
.review-bar-track{flex:1;height:6px;background:var(--belle-100);border-radius:3px;overflow:hidden;}
.review-bar-fill{height:100%;background:linear-gradient(90deg,var(--belle-400),var(--belle-800));border-radius:3px;}
.review-bar-count{font-size: 12px;color:var(--muted);width:20px;}

.lc-img-wrap { height:280px; display:flex; align-items:center; justify-content:center; padding:32px; }
.lc-img { max-width:100%; max-height:100%; object-fit:contain; transition:transform .5s; }
.lineup-card:hover .lc-img { transform:scale(1.04); }

footer{background:var(--charcoal);color:rgba(248,244,239,.5);padding:56px 80px 32px;}
.footer-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(248,244,239,.08);margin-bottom:24px;}
.footer-brand{font-family:var(--font-display);font-size:22px;font-weight:400;letter-spacing:.15em;color:#F8F4EF;margin-bottom:12px;}
.footer-tagline{font-size:12px;line-height:2;color:#FFF;}
.footer-col-title{font-size: 11px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:16px;}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:12px;letter-spacing:.08em;color:#FFF;text-decoration:none;transition:color .2s;}
.footer-links a:hover{color:#F8F4EF;}
.footer-bottom{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;font-size: 12px;color:#FFF;}

.bot-float{position:fixed;bottom:28px;right:28px;z-index:200;}
.bot-float-btn{width:56px;height:56px;border-radius:50%;background:var(--belle-800);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 20px rgba(60,60,110,.35);border:none;}
.bot-float-btn svg{width:22px;height:22px;fill:#fff;}
.bot-float-pulse{position:absolute;top:-3px;right:-3px;width:14px;height:14px;border-radius:50%;background:var(--belle-400);border:2px solid var(--warm-white);animation:pulse 2s ease-in-out infinite;}

@media(max-width:900px){
  .ichiha-bar,.nav,.breadcrumb{padding-left:20px;padding-right:20px;}
  nav{padding:0 20px;}
  .nav-center{display:none;}
  .breadcrumb{padding:12px 20px;}
  .product-hero{grid-template-columns:1fr;}
  .product-hero-visual{min-height:320px;padding:48px 24px;}
  .product-hero-info{padding:40px 20px;}
  .detail-section,.cross-section,.review-section{padding-left:20px;padding-right:20px;}
  .ingr-grid{grid-template-columns:1fr;}
  .factor5-grid{grid-template-columns:1fr 1fr;}
  .howto-grid{grid-template-columns:1fr;}
  .routine-steps{grid-template-columns:1fr 1fr;}
  .test-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cross-card{grid-template-columns:1fr;}
  .cross-img{min-height:160px;}
  .review-grid{grid-template-columns:1fr;}
  .review-summary{grid-template-columns:1fr;gap:20px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px;}
  .additive-grid{grid-template-columns:repeat(2,1fr);}
}