/* ============================================================
   AIZOME ZABO — 藍染坐忘 — concept demo (English storefront)
   by TOBIRA studio / 2026-07
   Design: "A Living Blue" — 天然灰汁発酵建て / 坐忘 / 藍四十八色
   ============================================================ */

:root{
  --ink:#0B1524;          /* indigo night */
  --ink2:#0F1D33;
  --ink3:#16294A;
  --paper:#F1EEE4;        /* kinari washi */
  --paper2:#E7E2D3;
  --muted:#8CA1B8;
  --line:rgba(241,238,228,.14);
  --line-d:rgba(11,21,36,.12);
  /* 藍四十八色 — authentic traditional shade names */
  --kamenozoki:#A6CBD8;   /* 甕覗き — one dip */
  --asagi:#5AA0BE;        /* 浅葱 */
  --hanada:#2E6FA0;       /* 縹 */
  --ai:#274A86;           /* 藍 */
  --kon:#1A2E56;          /* 紺 */
  --tomekon:#101F3E;      /* 留紺 — many dips */
  --accent:#4F9DC4;
  --accent-2:#8FC5DC;
  --ease:cubic-bezier(.16,1,.3,1);
  --pad:clamp(20px,5vw,80px);
  --maxw:1320px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--ink);color:var(--paper);
  font-family:"Zen Kaku Gothic New",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;
  font-weight:400;line-height:1.9;letter-spacing:.01em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:var(--accent);color:var(--ink)}

.mincho{font-family:"Shippori Mincho B1","Hiragino Mincho ProN",serif;font-weight:500}
.serif{font-family:"Cormorant Garamond",serif;font-weight:400}
.script{font-family:"Parisienne",cursive}
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:.68rem;letter-spacing:.28em;text-transform:uppercase}
.jp{font-family:"Shippori Mincho B1",serif}

/* ---------- cursor ---------- */
.cursor,.cursor-dot{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;border-radius:50%;mix-blend-mode:difference}
.cursor{width:34px;height:34px;border:1px solid rgba(241,238,228,.6);margin:-17px 0 0 -17px;transition:width .35s var(--ease),height .35s var(--ease),margin .35s var(--ease),background .35s}
.cursor.hover{width:64px;height:64px;margin:-32px 0 0 -32px;background:rgba(241,238,228,.12);border-color:transparent}
.cursor-dot{width:4px;height:4px;background:var(--paper);margin:-2px 0 0 -2px}
@media (hover:none),(pointer:coarse){.cursor,.cursor-dot{display:none}}

/* ---------- loader ---------- */
.loader{position:fixed;inset:0;z-index:9998;background:var(--ink);display:grid;place-items:center}
.loader .inner{text-align:center;width:min(80vw,440px)}
.lname{overflow:hidden;margin-bottom:22px}
.lname span{display:block;font-size:clamp(1.4rem,4vw,2.3rem);letter-spacing:.42em;transform:translateY(110%)}
.lsub{color:var(--muted);font-size:.62rem;letter-spacing:.32em;margin-bottom:22px}
.lbar{height:1px;background:var(--line);position:relative;overflow:hidden}
.lbar i{position:absolute;inset:0;background:linear-gradient(90deg,var(--kamenozoki),var(--hanada),var(--tomekon));transform:scaleX(0);transform-origin:left}
.lnum{margin-top:14px;color:var(--muted)}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:900;padding:22px var(--pad);
  display:flex;align-items:center;justify-content:space-between;
  transition:background .5s var(--ease),padding .5s var(--ease)}
.nav.solid{background:rgba(11,21,36,.82);backdrop-filter:blur(18px) saturate(1.2);padding:14px var(--pad);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;font-size:.95rem;letter-spacing:.22em}
.brand .mk{width:24px;height:24px;flex:none;fill:none;stroke:var(--accent);stroke-width:1.3;transition:stroke .8s var(--ease)}
.navlinks{display:flex;gap:32px;align-items:center}
.navlinks a{font-size:.74rem;letter-spacing:.16em;color:var(--muted);position:relative;padding:6px 0;transition:color .4s}
.navlinks a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform .5s var(--ease)}
.navlinks a:hover,.navlinks a[aria-current="page"]{color:var(--paper)}
.navlinks a:hover::after,.navlinks a[aria-current="page"]::after{transform:scaleX(1);transform-origin:left}
.navcta{border:1px solid var(--line);border-radius:100px;padding:9px 18px !important;color:var(--paper) !important}
.navcta::after{display:none}
.navcta:hover{background:var(--accent);border-color:var(--accent);color:var(--ink) !important}
.burger{display:none;width:28px;height:16px;position:relative;z-index:951}
.burger i{position:absolute;left:0;width:100%;height:1px;background:var(--paper);transition:transform .5s var(--ease),opacity .3s}
.burger i:nth-child(1){top:0}.burger i:nth-child(2){bottom:0}
.burger.open i:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger.open i:nth-child(2){transform:translateY(-7.5px) rotate(-45deg)}
.menu{position:fixed;inset:0;z-index:950;background:var(--ink2);display:grid;place-items:center;
  clip-path:circle(0% at 90% 4%);transition:clip-path .9s var(--ease);visibility:hidden}
.menu.open{clip-path:circle(150% at 90% 4%);visibility:visible}
.menu ul{list-style:none;text-align:center}
.menu li{overflow:hidden;margin:6px 0}
.menu a{display:block;font-size:clamp(1.8rem,6vw,3rem);letter-spacing:.08em;transform:translateY(110%);transition:transform .7s var(--ease),color .4s}
.menu.open a{transform:translateY(0)}
.menu li:nth-child(2) a{transition-delay:.06s}.menu li:nth-child(3) a{transition-delay:.12s}
.menu li:nth-child(4) a{transition-delay:.18s}.menu li:nth-child(5) a{transition-delay:.24s}.menu li:nth-child(6) a{transition-delay:.3s}
.menu a:hover{color:var(--accent)}
@media(max-width:900px){.navlinks{display:none}.burger{display:block}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;padding-bottom:clamp(46px,9vh,110px)}
.hero-bg{position:absolute;inset:-12% 0 -12% 0;z-index:0;will-change:transform}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.62;filter:saturate(1.05) contrast(1.05)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,21,36,.82) 0%,rgba(11,21,36,.32) 40%,rgba(11,21,36,.97) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%}
.eyebrow{color:var(--accent-2);margin-bottom:24px;opacity:0;transform:translateY(14px)}
.hero-title{font-size:clamp(2.7rem,8.2vw,7rem);line-height:1.06;letter-spacing:.01em;margin-bottom:28px;font-weight:400}
.hero-title .l{display:block;overflow:hidden}
.hero-title .l>span{display:block;transform:translateY(105%)}
.hero-lead{max-width:46ch;color:#D6DEE8;font-size:clamp(.96rem,1.5vw,1.1rem);line-height:2.05;opacity:0;transform:translateY(18px)}
.hero-lead .jp{color:#fff}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;opacity:0;transform:translateY(18px)}
.chip{border:1px solid var(--line);border-radius:100px;padding:8px 18px;font-size:.7rem;letter-spacing:.1em;color:#CBD6E2;
  display:inline-flex;align-items:center;gap:9px;backdrop-filter:blur(6px);background:rgba(241,238,228,.04)}
.chip b{color:var(--accent-2);font-weight:600}
.scrollcue{position:absolute;bottom:26px;right:var(--pad);z-index:3;display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.6rem;letter-spacing:.24em}
.scrollcue i{display:block;width:44px;height:1px;background:var(--line);position:relative;overflow:hidden}
.scrollcue i::after{content:"";position:absolute;inset:0;background:var(--accent);transform:translateX(-100%);animation:cue 2.4s var(--ease) infinite}
@keyframes cue{0%{transform:translateX(-100%)}55%{transform:translateX(0)}100%{transform:translateX(100%)}}
@media(max-width:640px){.scrollcue{display:none}}

/* ---------- sections ---------- */
.sec{padding:clamp(88px,13vh,168px) 0;position:relative}
.sec.light{background:var(--paper);color:var(--ink)}
.sec.light .sec-lead{color:#43506a}
.sec.light .mono{color:var(--hanada)}
.sec.light .sec-title{color:var(--ink)}
.sec-head{margin-bottom:clamp(42px,7vh,78px)}
.sec-head.center{text-align:center;margin-inline:auto;max-width:820px}
.sec-head .mono{color:var(--accent);display:block;margin-bottom:18px}
.sec-title{font-size:clamp(1.7rem,4vw,3rem);line-height:1.38;letter-spacing:.02em;font-weight:400}
.sec-lead{max-width:58ch;color:#BFCBD8;margin-top:22px;line-height:2.05}
.sec-head.center .sec-lead{margin-inline:auto}
.rule{height:1px;background:var(--line);width:100%}
.hl{color:var(--accent-2)}
.sec.light .hl{color:var(--hanada);font-weight:500}

/* ---------- manifesto / 坐忘 ---------- */
.manifesto{background:
  radial-gradient(120% 90% at 80% -10%,rgba(46,111,160,.22),transparent 60%),
  linear-gradient(180deg,var(--ink),var(--ink2))}
.mani-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(40px,6vw,90px);align-items:center}
.quote-mark{display:block;font-size:5rem;line-height:.6;color:var(--accent);opacity:.5;margin-bottom:6px}
.quote{font-size:clamp(1.5rem,3vw,2.35rem);line-height:1.68;letter-spacing:.02em}
.quote-by{color:var(--muted);margin-top:26px;font-size:.8rem;letter-spacing:.14em}
.zabo-kanji{font-size:clamp(3rem,7vw,5.4rem);letter-spacing:.2em;color:var(--accent-2);opacity:.9;line-height:1;margin-bottom:20px;display:block}
@media(max-width:880px){.mani-grid{grid-template-columns:1fr;gap:34px}}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{background:var(--ink);padding:clamp(26px,3.4vw,44px) clamp(18px,2.4vw,30px)}
.sec.light .stats{background:var(--line-d);border-color:var(--line-d)}
.sec.light .stat{background:var(--paper)}
.stat .n{font-size:clamp(2.4rem,5.4vw,3.9rem);line-height:1;letter-spacing:.01em;color:var(--paper);font-weight:600;display:flex;align-items:baseline;gap:5px}
.sec.light .stat .n{color:var(--tomekon)}
.stat .n .u{font-size:.82rem;letter-spacing:.06em;color:var(--accent);font-weight:500}
.sec.light .stat .n .u{color:var(--hanada)}
.stat .k{margin-top:16px;font-size:.9rem;line-height:1.6;color:var(--paper);font-weight:500}
.sec.light .stat .k{color:var(--kon)}
.stat .s{margin-top:8px;font-size:.74rem;color:var(--muted);letter-spacing:.04em}
.sec.light .stat .s{color:#5C6B82}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- marquee ---------- */
.marq{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;background:var(--ink2)}
.marq-in{display:flex;gap:52px;white-space:nowrap;width:max-content;animation:marq 30s linear infinite}
.marq span{font-family:"Shippori Mincho B1",serif;font-size:1.05rem;letter-spacing:.14em;color:var(--muted);display:inline-flex;align-items:center;gap:52px}
.marq span::after{content:"—";color:var(--accent);opacity:.5}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- image reveal ---------- */
.ph{position:relative;overflow:hidden;background:var(--ink3)}
.ph img{width:100%;height:100%;object-fit:cover;transform:scale(1.16);will-change:transform}
.ph .rev{position:absolute;inset:0;background:var(--ink2);transform-origin:top;z-index:2}
.ratio-4x5{aspect-ratio:4/5}.ratio-3x2{aspect-ratio:3/2}.ratio-1x1{aspect-ratio:1/1}.ratio-16x9{aspect-ratio:16/9}

/* ---------- process / the living vat ---------- */
.proc{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px)}
.pc{border-top:1px solid var(--line);padding-top:24px}
.pc .no{font-family:ui-monospace,monospace;font-size:.72rem;letter-spacing:.2em;color:var(--accent)}
.pc h3{font-family:"Shippori Mincho B1",serif;font-weight:500;font-size:1.24rem;margin:14px 0 6px;line-height:1.4}
.pc .romaji{color:var(--accent-2);font-size:.76rem;letter-spacing:.16em;margin-bottom:12px}
.pc p{color:#BFCBD8;font-size:.9rem;line-height:1.85}
@media(max-width:820px){.proc{grid-template-columns:1fr;gap:26px}}

.vatwrap{position:relative;margin-top:clamp(40px,6vh,72px);border-radius:2px;overflow:hidden}
.vatwrap .cap{position:absolute;left:24px;bottom:20px;z-index:3;color:#fff;font-size:.74rem;letter-spacing:.14em;text-shadow:0 2px 20px rgba(0,0,0,.6)}
#foam{position:absolute;inset:0;z-index:2;pointer-events:none}
#foam i{position:absolute;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(197,158,110,.95),rgba(150,110,64,.5) 60%,transparent 72%);opacity:0;will-change:transform,opacity}

/* ---------- 藍四十八色 / the blues ---------- */
.blues{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:1px solid var(--line);margin-top:clamp(34px,5vh,60px)}
.blue{position:relative;aspect-ratio:3/4;display:flex;flex-direction:column;justify-content:flex-end;padding:18px 14px;cursor:pointer;overflow:hidden;transition:flex .5s}
.blue::before{content:"";position:absolute;inset:0;background:var(--c);z-index:0;transition:transform .6s var(--ease)}
.blue:hover::before{transform:scale(1.04)}
.blue>*{position:relative;z-index:1}
.blue .kj{font-family:"Shippori Mincho B1",serif;font-size:1.5rem;letter-spacing:.08em;color:#fff;text-shadow:0 1px 10px rgba(0,0,0,.4)}
.blue .rm{font-size:.64rem;letter-spacing:.16em;color:rgba(255,255,255,.82);margin-top:5px;text-transform:uppercase}
.blue .dp{font-size:.6rem;color:rgba(255,255,255,.7);margin-top:10px;font-family:ui-monospace,monospace;letter-spacing:.08em}
.blue.lite .kj,.blue.lite .rm,.blue.lite .dp{color:var(--ink);text-shadow:none}
.blue.lite .rm,.blue.lite .dp{color:rgba(11,21,36,.7)}
.dip-note{text-align:center;margin-top:26px;color:var(--muted);font-size:.82rem;letter-spacing:.06em}
@media(max-width:820px){.blues{grid-template-columns:repeat(3,1fr)}}
@media(max-width:460px){.blue .kj{font-size:1.2rem}}

/* ---------- collection ---------- */
.coll{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,30px)}
.card{position:relative;display:block;background:var(--ink2);overflow:hidden;border:1px solid var(--line)}
.card .im{aspect-ratio:4/5;overflow:hidden}
.card .im img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.card:hover .im img{transform:scale(1.06)}
.card .meta{padding:20px 22px 24px}
.card .tag{font-family:ui-monospace,monospace;font-size:.62rem;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}
.card h3{font-family:"Shippori Mincho B1",serif;font-weight:500;font-size:1.16rem;margin:10px 0 6px}
.card .en{color:var(--muted);font-size:.78rem;letter-spacing:.05em}
.card .price{margin-top:14px;font-size:.92rem;color:var(--paper);display:flex;align-items:baseline;gap:8px}
.card .price .usd{font-size:.74rem;color:var(--muted)}
@media(max-width:820px){.coll{grid-template-columns:1fr 1fr;gap:14px}}
@media(max-width:520px){.coll{grid-template-columns:1fr}}

/* ---------- story split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,80px);align-items:center}
.split.rev{direction:rtl}.split.rev>*{direction:ltr}
.split .txt h2{font-family:"Shippori Mincho B1",serif;font-weight:500;font-size:clamp(1.6rem,3.4vw,2.5rem);line-height:1.4;margin-bottom:22px}
.split .txt p{color:#BFCBD8;line-height:2.05;margin-bottom:16px}
.sec.light .split .txt p{color:#43506a}
.sign{margin-top:26px;font-family:"Shippori Mincho B1",serif;font-size:1.05rem;letter-spacing:.06em}
.sign small{display:block;color:var(--muted);font-size:.72rem;letter-spacing:.14em;margin-top:6px;font-family:ui-monospace,monospace}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:28px}.split.rev{direction:ltr}}

/* ---------- world band ---------- */
.world{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--ink2),var(--tomekon))}
.world .wrap{position:relative;z-index:2;text-align:center;max-width:840px}
.world .big{font-family:"Shippori Mincho B1",serif;font-weight:500;font-size:clamp(1.8rem,4.4vw,3.1rem);line-height:1.5;letter-spacing:.02em;color:#EAF1F6}
.world .sub{color:#C7D3E0;margin-top:24px;line-height:2}

/* ---------- CTA / visit ---------- */
.cta{text-align:center}
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--accent);color:var(--ink);
  padding:16px 34px;border-radius:100px;font-size:.82rem;letter-spacing:.12em;font-weight:600;
  transition:transform .5s var(--ease),background .4s;will-change:transform}
.btn:hover{background:var(--accent-2)}
.btn.ghost{background:transparent;color:var(--paper);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent-2)}
.btnrow{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.visit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(40px,6vh,64px)}
.vcell{background:var(--ink);padding:30px 26px}
.vcell .mono{color:var(--accent);margin-bottom:12px;display:block}
.vcell p{font-size:.9rem;line-height:1.8;color:#CBD6E2}
.vcell a{color:var(--accent-2);border-bottom:1px solid var(--line)}
@media(max-width:820px){.visit-grid{grid-template-columns:1fr}}

/* ---------- footer ---------- */
.foot{background:var(--ink2);border-top:1px solid var(--line);padding:clamp(60px,9vh,100px) 0 40px}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.foot .bname{font-family:"Shippori Mincho B1",serif;font-size:1.5rem;letter-spacing:.14em}
.foot .bsub{color:var(--muted);font-size:.76rem;letter-spacing:.14em;margin-top:10px}
.foot-links{display:flex;gap:60px;flex-wrap:wrap}
.foot-col h4{font-size:.66rem;letter-spacing:.2em;color:var(--accent);text-transform:uppercase;margin-bottom:16px}
.foot-col a,.foot-col p{display:block;color:var(--muted);font-size:.84rem;margin-bottom:9px;transition:color .3s}
.foot-col a:hover{color:var(--paper)}
.foot-bar{margin-top:clamp(46px,7vh,72px);padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.7rem;letter-spacing:.06em}
.demo-note{color:var(--accent-2);opacity:.85}

/* ---------- reveal utils ---------- */
.reveal{opacity:0;transform:translateY(30px)}
.reveal-l{opacity:0;transform:translateX(-30px)}
.js .reveal,.js .reveal-l{will-change:opacity,transform}