/* --------------------------------------------------
   4色 … EC(Shopify)・ブログと統一（2026-07-22）
   1. 生成り  #F4EFE6  … 地
   2. 焦茶    #3A2A21  … 文字
   3. 墨黒    #14100E  … 数値バンド・フッター（大きい濃色面）
   4. 金      #A98B5D  … 差し色（濃色の上では #C9A961）
   ＋白 #FFFFFF … カード
   金は面で塗らず1pxのヘアラインで使う。
   -------------------------------------------------- */
:root{
  --ink:#3a2a21;
  --ink-2:#6e5b4e;
  --ink-3:#14100e;
  --paper:#f4efe6;
  --paper-2:#ebe2d4;
  --line:#ddd0bb;
  --gold:#a98b5d;
  --gold-2:#c9a961;
  --gold-3:#efe6d8;
  --wrap:1120px;
  --r-slab:28px;
  --r-panel:20px;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --mincho:"Yu Mincho","YuMincho","Hiragino Mincho ProN","Hiragino Mincho Pro",serif;
  --gothic:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html{background:var(--paper)}
body{margin:0;background:transparent;color:var(--ink);font-family:var(--gothic);
  line-height:2.05;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ---- スクロールで現れる ---- */
.js-reveal [data-rv]{opacity:0;transform:translateY(28px);
  transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
.js-reveal [data-rv].in{opacity:1;transform:none}
/* カスタマーボイスのカードだけ、下からではなく上から降りてくる */
.js-reveal .v-card[data-rv]{transform:translateY(-34px)}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js-reveal [data-rv]{opacity:1;transform:none;transition:none}
  *{animation:none!important}
  .bg{display:none}
}

/* ---- 背景：1本の曲線がゆっくり流れる ---- */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg i{position:absolute;display:block}
.bg i{top:6vh;left:-16vw;width:56vw;height:56vw;border-radius:50%;
  background:radial-gradient(circle,rgba(201,169,97,.10),rgba(201,169,97,0) 70%);
  animation:sway 74s ease-in-out infinite alternate}
@keyframes sway{to{transform:translate3d(7vw,-5vh,0) scale(1.12)}}

/* ---- header ---- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(244,239,230,.9);backdrop-filter:blur(10px);
  border-top:2px solid var(--gold)}
.hdr .wrap{display:flex;align-items:center;gap:30px;height:80px}
.hdr .logo img{height:34px;width:auto}
.nav{display:flex;gap:26px;margin-left:auto;font-size:15px;letter-spacing:.05em}
.nav a{position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;
  background:var(--gold);transition:left .5s var(--ease),right .5s var(--ease)}
.nav a:hover::after{left:0;right:0}
.btn{display:inline-block;font-family:var(--mincho);letter-spacing:.1em;padding:15px 34px;
  border-radius:var(--r-pill);transition:background .5s var(--ease),color .5s var(--ease),
  border-color .5s var(--ease),transform .5s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn-p{background:var(--gold);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28)}
.btn-p:hover{background:#705034}
.btn-g{border:1px solid var(--ink);color:var(--ink)}
.btn-g:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:11px 24px;font-size:15px}
.btn-blog{background:var(--paper);border-color:var(--ink)}
.btn-blog:hover{background:var(--ink);color:var(--paper)}
.menu-btn{display:none}

/* ---- hero ---- */
.hero{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1.25fr);
  align-items:stretch;gap:clamp(33px,4.5vw,60px);min-height:clamp(414px,66vh,658px);background:var(--paper-2)}
.hero-in{align-self:center;padding:56px 16px 56px max(32px,calc((100vw - var(--wrap))/2 + 32px))}
.hero-in>*{opacity:0;transform:translateY(26px);animation:rise 1.2s var(--ease) forwards}
.hero-in>*:nth-child(1){animation-delay:.15s}
.hero-in>*:nth-child(2){animation-delay:.3s}
.hero-in>*:nth-child(3){animation-delay:.45s}
.hero-in>*:nth-child(4){animation-delay:.6s}
@keyframes rise{to{opacity:1;transform:none}}
.eyebrow{font-family:var(--mincho);font-size:14px;letter-spacing:.34em;color:var(--gold);margin:0 0 22px}
.hero h1{font-family:var(--mincho);font-weight:500;font-size:clamp(33px,4.2vw,47px);
  line-height:1.55;letter-spacing:.05em;margin:0 0 26px}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p{color:var(--ink-2);font-size:16px;margin:0 0 38px;max-width:24em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

.hero-media{position:relative;display:flex;opacity:0;animation:fadein 1.6s var(--ease) .3s forwards}
@keyframes fadein{to{opacity:1}}
.hero-slides{position:relative;flex:1;width:100%;overflow:hidden;background:var(--paper-2)}
.hero-slides img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;
  opacity:0;transform:translateX(7%);transition:opacity 3.4s var(--ease),transform 3.8s var(--ease);
  -webkit-mask-image:linear-gradient(225deg,transparent,#000 45%);
  mask-image:linear-gradient(225deg,transparent,#000 45%)}
.hero-slides img.on{opacity:1;transform:none;z-index:2}
.hero-slides img.prev{opacity:0;transform:translateX(-7%)}
.hero-dots{position:absolute;left:0;right:0;bottom:22px;display:flex;gap:9px;justify-content:center;z-index:2}
.hero-dots button{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:rgba(255,255,255,.6);
  cursor:pointer;transition:width .6s var(--ease),background .6s var(--ease)}
.hero-dots button[aria-selected="true"]{width:26px;border-radius:var(--r-pill);background:#fff}
.hero-gap{height:22px;background:var(--paper-2)}
@media(max-width:749px){.hero-gap{height:18px}}

/* ---- section ---- */
section{padding:118px 0}
.slab{margin:0;border-radius:0}
.sec-head{text-align:center;margin-bottom:64px}
.sec-head .en{font-family:var(--mincho);font-size:12.5px;letter-spacing:.38em;color:var(--gold);display:block;margin-bottom:16px}
.sec-head h2{font-family:var(--mincho);font-weight:500;font-size:clamp(23px,3vw,33px);
  letter-spacing:.08em;line-height:1.75;margin:0 0 14px}
.sec-head p{color:var(--ink-2);font-size:16px;margin:0}

/* ---- voices ---- */
.voices{background:var(--paper-2);position:relative;overflow:hidden}
.voices-bg{position:absolute;inset:0;z-index:0;pointer-events:none;
  width:100%;height:100%;object-fit:cover;display:block;opacity:.85;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 85%),
    linear-gradient(225deg,transparent,#000 30%);
  -webkit-mask-composite:source-in;
  mask-image:linear-gradient(to bottom,transparent,#000 85%),
    linear-gradient(225deg,transparent,#000 30%);
  mask-composite:intersect}
.voices .sec-head,.voices .v-grid,.voices .v-more,.voices .note{position:relative;z-index:1}
.v-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:22px}
.v-card{background:#fff;border-radius:var(--r-card);padding:36px 34px 30px;display:flex;flex-direction:column;
  text-decoration:none;color:inherit;cursor:pointer;
  transition:transform .7s var(--ease),box-shadow .7s var(--ease)}
.v-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px -24px rgba(58,42,33,.4)}
.v-card .vh{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.v-card .avatar{flex:none;width:46px;height:46px;border-radius:50%;overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2)}
.v-card .avatar img{width:100%;height:100%;object-fit:cover;object-position:center 30%;display:block}
.v-card .mark{font-family:var(--mincho);font-size:32px;color:var(--gold-2);line-height:1}
.v-card blockquote{font-family:var(--mincho);font-size:18px;line-height:2.15;margin:0 0 22px;letter-spacing:.03em}
.v-card .who{margin-top:auto;font-size:14px;color:var(--ink-2);letter-spacing:.08em;
  border-top:1px solid var(--line);padding-top:16px}
.v-more{text-align:center;margin-top:52px}
.note{font-size:12.5px;color:#9b8b7b;text-align:center;margin:30px 0 0;line-height:1.9}
.voices .note{color:#fff;
  text-shadow:0 1px 2px rgba(58,42,33,.9),0 0 4px rgba(58,42,33,.75)}

/* ---- facts ---- */
.facts{background:var(--ink-3);color:#eadfd0;padding:76px 0}
@keyframes shineSweep{0%{left:-60%}35%{left:130%}100%{left:130%}}
.n.blink{animation:blinkPulse 1.8s ease-in-out infinite}
@keyframes blinkPulse{0%,100%{opacity:1}50%{opacity:.4}}
.f-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:34px;text-align:center}
.f-grid .n{font-family:var(--mincho);font-size:36px;letter-spacing:.05em;color:var(--gold-2);line-height:1.4}
.f-grid .n small{font-size:17px;margin-left:4px}
.f-grid .l{font-size:14px;letter-spacing:.12em;color:#b3a290;margin-top:8px}

/* ---- 単独ページ（代表挨拶など） ---- */
.article-page{padding:64px 0 96px}
.article-page .page-head{text-align:center;margin-bottom:56px}
.article-page .page-head .en{font-family:var(--mincho);font-size:12.5px;letter-spacing:.38em;color:var(--gold);display:block;margin-bottom:16px}
.article-page .page-head h1{font-family:var(--mincho);font-weight:500;font-size:clamp(26px,3.4vw,36px);color:var(--ink);margin:0}
.article-page .rte{max-width:640px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink)}
.article-page .rte p{margin:0 0 24px}
.article-page .rte .lead{font-family:var(--mincho);font-size:21px;color:var(--gold);text-align:center;margin:44px 0 30px}
.article-page .rte .lead:first-child{margin-top:0}
.article-page .rte .quote{color:var(--ink-2);border-left:2px solid var(--gold-2);padding-left:18px}
.article-page .rte .sign{margin-top:44px;text-align:right;color:var(--ink-2)}

/* ---- about ---- */
.about-lead{max-width:680px;margin:0 auto 66px;text-align:center;color:var(--ink-2);font-size:16px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.step{background:#fff;border-radius:var(--r-card);padding:40px 34px;
  transition:transform .7s var(--ease),box-shadow .7s var(--ease)}
.step:hover{transform:translateY(-6px);box-shadow:0 18px 44px -24px rgba(58,42,33,.4)}
.step .no{font-family:var(--mincho);font-size:13px;letter-spacing:.28em;color:var(--gold);margin-bottom:16px}
.step h3{font-family:var(--mincho);font-weight:500;font-size:20px;margin:0 0 12px;letter-spacing:.05em}
.step p{margin:0;font-size:15px;color:var(--ink-2);line-height:2}
.mineral{margin-top:64px;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.mineral-photo{border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;margin-bottom:26px;
  box-shadow:0 18px 40px -22px rgba(58,42,33,.4)}
.mineral-photo img{width:100%;height:100%;object-fit:cover;display:block}
/* ---- 相乗効果の図 ---- */
.formula{padding:8px 4px}
.f-row{display:flex;align-items:center;justify-content:center;gap:clamp(12.5px,2vw,20px)}
.f-circle{flex:1 1 0;min-width:0;aspect-ratio:1;max-width:210px;border-radius:50%;
  border:1px solid var(--gold-2);background:rgba(255,255,255,.55);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:14px;text-align:center;text-decoration:none;color:inherit;cursor:pointer;
  transition:transform .5s cubic-bezier(.22,.61,.36,1),background .5s cubic-bezier(.22,.61,.36,1)}
.f-circle:hover{transform:translateY(-2px);background:rgba(255,255,255,.85)}
.f-ic{width:30px;height:30px;color:var(--gold-2);margin-bottom:8px;stroke-linecap:round;stroke-linejoin:round}
.f-circle h4{font-family:var(--mincho);font-weight:500;font-size:clamp(18px,2.1vw,22px);
  letter-spacing:.08em;margin:0;line-height:1.4}
.f-circle h4.en-title{letter-spacing:.02em}
.f-rule{display:block;width:38px;height:1px;background:var(--gold-2);margin:11px 0 9px}
.f-circle p{font-family:var(--mincho);font-size:14px;color:var(--ink);margin:0;line-height:1.65;letter-spacing:.04em}
.f-plus{font-family:var(--mincho);font-size:clamp(20px,2.4vw,26px);color:var(--gold);flex:none}
.f-arrow{display:flex;justify-content:center;margin:20px 0 16px}
.f-arrow svg{width:20px;height:32px;color:var(--gold-2);stroke-linecap:round;stroke-linejoin:round}
.f-result{position:relative;border:1px solid var(--gold-2);border-radius:14px;padding:30px 22px 24px;text-align:center}
.f-result::after{content:"";position:absolute;inset:4px;border:1px solid rgba(201,169,97,.4);border-radius:11px;pointer-events:none}
.f-badge{position:absolute;top:-15px;left:50%;transform:translateX(-50%);
  background:var(--gold);color:#fff;font-family:var(--mincho);font-size:14px;letter-spacing:.12em;
  padding:6px 22px;border-radius:var(--r-pill);white-space:nowrap;z-index:1}
.f-result p{font-family:var(--mincho);font-size:clamp(17px,1.9vw,20px);line-height:1.85;
  letter-spacing:.05em;margin:0}
.mineral h3{font-family:var(--mincho);font-weight:500;font-size:21px;letter-spacing:.06em;line-height:1.8;margin:0 0 18px}
.mineral p{font-size:15px;color:var(--ink-2);margin:0 0 12px}

/* ---- offer ---- */
.offer{background:var(--paper-2)}
.offer-box{background:#fff;border-radius:var(--r-panel);display:grid;grid-template-columns:1fr 1.1fr;
  overflow:hidden;position:relative}
.offer-box::after{content:"";position:absolute;top:0;left:-60%;width:32%;height:100%;z-index:5;
  background:linear-gradient(115deg,transparent 15%,rgba(255,255,255,.55) 50%,transparent 85%);
  transform:skewX(-18deg);pointer-events:none;animation:shineSweep 4.4s ease-in-out infinite}
.offer-box img{height:100%;object-fit:cover}
.offer-body{padding:60px 56px}
.offer-body .tag{display:inline-block;background:var(--gold-3);color:var(--gold);font-size:12.5px;
  letter-spacing:.16em;padding:8px 20px;border-radius:var(--r-pill);margin-bottom:22px}
.offer-body h2{font-family:var(--mincho);font-weight:500;font-size:28px;letter-spacing:.06em;margin:0 0 16px;line-height:1.7}
.offer-body>p{font-size:15px;color:var(--ink-2);margin:0 0 26px}
.price{display:flex;align-items:baseline;gap:10px;margin-bottom:10px;font-family:var(--mincho)}
.price .y{font-size:34px;color:var(--gold);letter-spacing:.02em}
.price .u{font-size:15px;color:var(--ink-2)}
.offer-note{font-size:13px;color:var(--ink-2);margin:0 0 32px;line-height:1.9}

/* ---- products ---- */
.p-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:26px}
.p-card{background:#fff;border-radius:var(--r-card);overflow:hidden;
  transition:transform .7s var(--ease),box-shadow .7s var(--ease)}
.p-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px -24px rgba(58,42,33,.4)}
.p-card .ph{overflow:hidden}
.p-card img{aspect-ratio:1/1;object-fit:cover;width:100%;transition:transform 1.4s var(--ease)}
.p-card:hover img{transform:scale(1.06)}
.p-body{padding:26px 28px 30px}
.p-body h3{font-family:var(--mincho);font-weight:500;font-size:18px;margin:0 0 10px;letter-spacing:.04em}
.p-body p{font-size:14px;color:var(--ink-2);margin:0 0 16px;min-height:3.6em;line-height:1.9}
.p-body .py{font-family:var(--mincho);font-size:20px;color:var(--gold)}

/* ---- company ---- */
.company{display:grid;grid-template-columns:1fr 1fr;gap:68px;align-items:center}
.company h2{font-family:var(--mincho);font-weight:500;font-size:28px;letter-spacing:.07em;margin:0 0 22px;line-height:1.8}
.company .en{font-family:var(--mincho);font-size:12.5px;letter-spacing:.38em;color:var(--gold);display:block;margin-bottom:14px}
.company p{font-size:15px;color:var(--ink-2);margin:0 0 18px}
.company .links{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.media-box{background:#fff;padding:28px;border-radius:var(--r-card)}
.media-box img{border-radius:var(--r-img)}
.media-box .cap{font-size:13px;color:var(--ink-2);margin:18px 0 0;text-align:center;line-height:1.9}

/* ---- footer ---- */
.wave{display:block;width:100%;height:clamp(56px,7vw,103px);margin-bottom:-1px;color:var(--ink-3)}
footer{background:var(--ink-3);color:#b3a290;padding:24px 0 40px;font-size:14px}
.f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:44px;
  border-bottom:1px solid rgba(201,169,97,.28)}
footer h4{font-family:var(--mincho);font-weight:500;color:var(--gold-2);font-size:16px;letter-spacing:.12em;margin:0 0 20px}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:12px}
footer a{transition:color .5s var(--ease)}
footer a:hover{color:var(--gold-2)}
.copy{padding-top:30px;text-align:center;color:#8b7c6d;font-size:12.5px}

/* ---- 追従メニュー（右下） ---- */
.floating{position:fixed;right:26px;bottom:26px;z-index:70;
  display:flex;flex-direction:row;align-items:center;gap:10px;
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .7s var(--ease),transform .7s var(--ease)}
.floating.show{opacity:1;transform:none;pointer-events:auto}
.fl-ico{width:46px;height:46px;display:grid;place-items:center;padding:0;cursor:pointer;
  border:1px solid var(--line);border-radius:50%;background:rgba(255,255,255,.94);
  color:var(--ink);backdrop-filter:blur(8px);
  box-shadow:0 10px 26px -16px rgba(58,42,33,.5);
  transition:background .5s var(--ease),color .5s var(--ease),
  border-color .5s var(--ease),transform .5s var(--ease)}
.fl-ico svg{width:20px;height:20px;stroke-linecap:round;stroke-linejoin:round}
.fl-ico:hover{background:var(--ink);border-color:var(--ink);color:var(--paper);transform:translateY(-2px)}
.fl-main{box-shadow:0 14px 34px -14px rgba(58,42,33,.55);padding:14px 26px;font-size:16px}
.fl-sub{background:rgba(255,255,255,.94);color:var(--ink);border:1px solid var(--line);backdrop-filter:blur(8px)}
.fl-sub:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}

@media(max-width:860px){
  section{padding:76px 0}
  .wrap{padding:0 22px}

  .sec-head{margin-bottom:44px}
  .hdr .wrap{gap:12px;height:70px}
  .hdr .logo img{height:28px}
  .menu-btn{display:block;order:3;background:none;border:1px solid var(--line);border-radius:var(--r-pill);
    width:44px;height:40px;cursor:pointer;position:relative}
  .menu-btn span,.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:13px;width:18px;height:1px;background:var(--ink)}
  .menu-btn span{top:19px}
  .menu-btn span::before{top:-6px;left:0}
  .menu-btn span::after{top:6px;left:0}
  .hdr .btn-sm{font-size:13px;padding:10px 16px;margin-left:auto}
  .nav{position:absolute;top:70px;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);
    border-bottom:1px solid var(--line);margin:0;padding:8px 22px 20px;display:none}
  .nav.open{display:flex}
  .nav a{padding:15px 0;border-bottom:1px solid var(--line);font-size:16px}
  .hero{grid-template-columns:1fr;gap:0;height:auto}
  .hero-in{padding:40px 22px 60px;order:2}
  .hero-media{order:1}
  .hero-slides{height:min(52vh,340px);flex:none}
  .hero-cta{display:grid;grid-template-columns:1fr;gap:12px}
  .hero-cta .btn{text-align:center}
  .mineral,.offer-box,.company,.f-top{grid-template-columns:1fr;gap:30px}
  .mineral{margin-top:44px}
  .formula{padding:4px 0}
  .f-circle{padding:10px}
  .offer-body{padding:38px 28px}
  .offer-box img{aspect-ratio:16/10}
  .floating{left:10px;right:10px;bottom:10px;gap:7px;justify-content:flex-end}
  .fl-ico{width:40px;height:40px;flex:none}
  .fl-ico svg{width:17px;height:17px}
  .fl-main{padding:12px 14px;font-size:13px;letter-spacing:.04em;white-space:nowrap}
}