/* 浅野商店デモ — 共有スタイル(2026-08-31)
   世界: 墨の夜 / 生成りの紙 / 灯りの橙。動くのは灯りとひごの線だけ */
:root{
  --sumi:#0b0a09;
  --sumi2:#14110e;
  --washi:#f0e6d4;
  --washi6:rgba(240,230,212,.6);
  --washi4:rgba(240,230,212,.4);
  --akari:#ffb45e;
  --akari-dim:rgba(255,180,94,.5);
  --line:rgba(240,230,212,.14);
}
*{margin:0;padding:0;box-sizing:border-box}
html{background:var(--sumi)}
body{
  background:
    radial-gradient(ellipse 90% 50% at 50% 0%, #17130f 0%, var(--sumi) 72%),
    var(--sumi);
  color:var(--washi);
  font-family:"Shippori Mincho",serif;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:url(img/washi.jpg);background-size:760px;
  opacity:.05;mix-blend-mode:screen}
body::after{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse 96% 78% at 50% 42%, transparent 55%, rgba(0,0,0,.42) 100%)}
main{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- header ---------- */
.gh{position:fixed;top:0;left:0;right:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 32px 26px;
  background:linear-gradient(180deg, rgba(11,10,9,.95) 0%, rgba(11,10,9,.72) 55%, rgba(11,10,9,0) 100%);
  pointer-events:none}
.gh>*{pointer-events:auto}
.gh .brand{font-size:15px;letter-spacing:.42em;font-weight:500;color:var(--washi)}
.gh .brand small{display:block;margin-top:5px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-size:8px;letter-spacing:.34em;color:var(--washi4);font-weight:300}
.gh nav{display:flex;gap:26px;align-items:center}
.gh nav a{font-family:"Zen Kaku Gothic New",sans-serif;font-size:11px;
  letter-spacing:.22em;color:var(--washi6);transition:color .5s;position:relative;padding:6px 0}
.gh nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--akari);transition:width .5s}
.gh nav a:hover{color:var(--washi)}
.gh nav a:hover::after{width:100%}
.gh nav a.on{color:var(--akari)}
.demo-tag{font-family:"Zen Kaku Gothic New",sans-serif;font-size:9px;letter-spacing:.3em;
  color:var(--washi4);border:1px solid rgba(240,230,212,.2);padding:6px 10px 6px 13px;margin-left:6px}
.menu-btn{display:none}

/* ---------- page hero band ---------- */
.ph{position:relative;padding:170px 8vw 90px;overflow:hidden}
.ph .kan{position:absolute;right:6vw;top:110px;font-size:clamp(120px,22vw,300px);
  font-weight:600;color:transparent;-webkit-text-stroke:1px rgba(240,230,212,.08);
  line-height:1;user-select:none;pointer-events:none}
.ph h1{font-size:clamp(26px,3.6vw,44px);font-weight:500;letter-spacing:.3em}
.ph .lead{margin-top:26px;font-size:13px;line-height:2.6;letter-spacing:.1em;
  color:var(--washi6);max-width:640px}
.ph .lead b{color:var(--washi);font-weight:500}

/* ひご巻きの線: 見出しの下でくるくる巻かれる */
.higo{margin-top:26px;width:150px;height:34px}
.higo path{fill:none;stroke:var(--akari-dim);stroke-width:1.1;
  stroke-dasharray:600;stroke-dashoffset:600;transition:stroke-dashoffset 2.4s cubic-bezier(.4,0,.2,1)}
.rv-on .higo path{stroke-dashoffset:0}

/* ---------- sections ---------- */
section.blk{position:relative;padding:90px 8vw}
.blk .cap{font-family:"Zen Kaku Gothic New",sans-serif;font-size:10px;
  letter-spacing:.44em;color:var(--akari);margin-bottom:18px}
.blk h2{font-size:clamp(20px,2.4vw,30px);font-weight:500;letter-spacing:.24em;margin-bottom:26px}
.blk p.tx{font-size:13px;line-height:2.6;letter-spacing:.08em;color:var(--washi6);max-width:680px}
.blk p.tx+p.tx{margin-top:18px}
.blk p.tx b{color:var(--washi);font-weight:500}
.hr{height:1px;background:linear-gradient(90deg,var(--line),transparent);margin:0 8vw}

/* ---------- reveal(灯りが入るような静かな出現) ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity 1.4s ease,transform 1.4s cubic-bezier(.22,1,.36,1)}
.rv-on.rv,.rv-on .rv{opacity:1;transform:none}
.rv-d1{transition-delay:.12s}.rv-d2{transition-delay:.24s}.rv-d3{transition-delay:.36s}
@media (prefers-reduced-motion: reduce){
  .rv{opacity:1;transform:none;transition:none}
  .higo path{stroke-dashoffset:0;transition:none}
}

/* ---------- cards(商品) ---------- */
.grid{display:grid;gap:34px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{position:relative;border:1px solid var(--line);background:rgba(255,255,255,.015);
  padding:22px 22px 26px;transition:border-color .6s;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse 80% 60% at 50% 30%, rgba(255,180,94,.10), transparent 70%);
  opacity:0;transition:opacity .8s}
.card:hover{border-color:rgba(255,180,94,.35)}
.card:hover::before{opacity:1}
.card .im{position:relative;background:#171310;display:flex;align-items:center;justify-content:center;
  aspect-ratio:3/4;overflow:hidden}
.card .im img{width:auto;height:100%;object-fit:cover;filter:brightness(.96);transition:filter .8s}
.card:hover .im img{filter:brightness(1.06)}
.card h3{margin-top:18px;font-size:16px;font-weight:500;letter-spacing:.22em}
.card .en{margin-top:6px;font-family:"Zen Kaku Gothic New",sans-serif;font-size:9px;
  letter-spacing:.3em;color:var(--washi4)}
.card p{margin-top:12px;font-size:11.5px;line-height:2.2;letter-spacing:.06em;color:var(--washi6)}

/* 写真バンド */
.band{position:relative;height:52vh;min-height:340px;overflow:hidden;margin:40px 0}
.band img{width:100%;height:100%;object-fit:cover;filter:brightness(.9) saturate(.92)}
.band::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(11,10,9,.55), transparent 30%, transparent 68%, rgba(11,10,9,.72))}
.band .note{position:absolute;right:8vw;bottom:26px;z-index:2;
  font-family:"Zen Kaku Gothic New",sans-serif;font-size:10px;letter-spacing:.3em;color:var(--washi6)}

/* ---------- 沿革(灯りが点いていく年表) ---------- */
.ayumi{max-width:760px;position:relative;padding-left:34px}
.ayumi::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--line),rgba(240,230,212,.05))}
.ay{position:relative;padding:16px 0 16px 14px;display:flex;gap:26px;align-items:baseline}
.ay .dot{position:absolute;left:-31px;top:24px;width:9px;height:9px;border-radius:50%;
  background:#2a2118;transition:background 1s ease,box-shadow 1.2s ease}
.ay.rv-on .dot{background:var(--akari);box-shadow:0 0 14px rgba(255,180,94,.75),0 0 34px rgba(255,150,60,.3)}
.ay .yr{flex:0 0 92px;font-size:15px;letter-spacing:.12em;color:var(--akari);font-weight:500}
.ay .gg{flex:0 0 64px;font-family:"Zen Kaku Gothic New",sans-serif;font-size:10px;
  letter-spacing:.14em;color:var(--washi4)}
.ay .tt{font-size:12.5px;line-height:2.1;letter-spacing:.06em;color:var(--washi6)}

/* ---------- 会社概要表 ---------- */
.corp{max-width:720px}
.corp dl{display:flex;gap:30px;padding:20px 4px;border-bottom:1px solid var(--line)}
.corp dt{flex:0 0 130px;font-size:12px;letter-spacing:.3em;color:var(--akari)}
.corp dd{font-size:13px;line-height:2.2;letter-spacing:.08em;color:var(--washi6)}

/* ---------- 動画 ---------- */
.vids{display:grid;grid-template-columns:repeat(2,1fr);gap:40px 34px;max-width:1080px}
.vid h3{font-size:14px;font-weight:500;letter-spacing:.18em;margin-bottom:14px}
.vid .yt{position:relative;aspect-ratio:16/9;background:#171310;border:1px solid var(--line)}
.vid iframe,.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt.lite{cursor:pointer;background-size:cover;background-position:center}
.yt.lite::before{content:"";position:absolute;inset:0;background:rgba(11,10,9,.35);transition:background .5s}
.yt.lite:hover::before{background:rgba(11,10,9,.15)}
.yt.lite::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:0;height:0;border-left:26px solid rgba(255,180,94,.92);
  border-top:16px solid transparent;border-bottom:16px solid transparent;
  filter:drop-shadow(0 0 18px rgba(255,150,60,.5))}
.yt.lite.playing::before,.yt.lite.playing::after{display:none}

/* ---------- form ---------- */
.form{max-width:640px}
.form label{display:block;margin-top:26px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-size:11px;letter-spacing:.3em;color:var(--washi6)}
.form input,.form textarea{width:100%;margin-top:10px;padding:14px 16px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--washi);
  font-family:"Shippori Mincho",serif;font-size:14px;letter-spacing:.06em;transition:border-color .5s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--akari-dim)}
.form textarea{min-height:170px;resize:vertical}
.form button{margin-top:34px;padding:16px 60px;background:none;cursor:pointer;
  border:1px solid var(--akari-dim);color:var(--akari);
  font-family:"Zen Kaku Gothic New",sans-serif;font-size:12px;letter-spacing:.4em;text-indent:.4em;
  transition:background .5s}
.form button:hover{background:rgba(255,180,94,.1)}
.form .demo-note{margin-top:16px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-size:10px;letter-spacing:.14em;color:var(--washi4)}
.form .sent{margin-top:16px;font-size:13px;letter-spacing:.1em;color:var(--akari);display:none}

/* ---------- footer ---------- */
footer.gf{position:relative;z-index:1;margin-top:90px;padding:70px 8vw 44px;
  border-top:1px solid var(--line)}
.gf .fbrand{font-size:16px;letter-spacing:.42em;font-weight:500}
.gf .fbrand small{display:block;margin-top:6px;font-family:"Zen Kaku Gothic New",sans-serif;
  font-size:8px;letter-spacing:.3em;color:var(--washi4);font-weight:300}
.gf .addr{margin-top:18px;font-family:"Zen Kaku Gothic New",sans-serif;font-size:11px;
  line-height:2.2;letter-spacing:.14em;color:var(--washi6)}
.gf nav{margin-top:30px;display:flex;flex-wrap:wrap;gap:8px 24px}
.gf nav a{font-family:"Zen Kaku Gothic New",sans-serif;font-size:10.5px;
  letter-spacing:.2em;color:var(--washi4);transition:color .5s}
.gf nav a:hover{color:var(--akari)}
.gf .legal{margin-top:38px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-family:"Zen Kaku Gothic New",sans-serif;font-size:9px;letter-spacing:.2em;color:var(--washi4)}

/* ---------- SP ---------- */
@media (max-width:860px){
  .gh{padding:16px 20px 12px}
  .gh .brand{font-size:13px}
  .gh nav{position:fixed;inset:0;background:rgba(11,10,9,.97);
    flex-direction:column;justify-content:center;gap:30px;
    opacity:0;pointer-events:none;transition:opacity .5s}
  .gh nav.open{opacity:1;pointer-events:auto}
  .gh nav a{font-size:14px;letter-spacing:.34em}
  .gh .demo-tag{display:none}
  .menu-btn{display:block;position:relative;z-index:41;width:40px;height:40px;
    background:none;border:none;cursor:pointer}
  .menu-btn i,.menu-btn::before,.menu-btn::after{content:"";position:absolute;left:9px;right:9px;
    height:1px;background:var(--washi);transition:transform .4s,opacity .4s}
  .menu-btn::before{top:14px}.menu-btn i{top:20px;display:block}.menu-btn::after{top:26px}
  .menu-btn.x::before{transform:translateY(6px) rotate(45deg)}
  .menu-btn.x i{opacity:0}
  .menu-btn.x::after{transform:translateY(-6px) rotate(-45deg)}
  .ph{padding:130px 7vw 60px}
  .ph .kan{right:3vw;top:90px}
  section.blk{padding:64px 7vw}
  .hr{margin:0 7vw}
  .grid.g3,.grid.g4{grid-template-columns:1fr 1fr;gap:20px}
  .card{padding:14px 14px 18px}
  .vids{grid-template-columns:1fr}
  .band{height:38vh;min-height:240px}
  .ay{flex-wrap:wrap;gap:8px 18px}
  .ay .tt{flex-basis:100%}
}