:root{
  --ink:#1A1A1A;
  --paper:#F4EDE2;
  --washi:#FAF4E8;
  --navy:#1A2E48;
  --navy-d:#0F1E32;
  --shu:#B23C28;
  --gold:#C8A66B;
  --line:rgba(26,26,26,0.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Noto Sans JP","Inter",sans-serif;-webkit-font-smoothing:antialiased;font-feature-settings:"palt" 1;line-height:1.85;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.cont{max-width:1180px;margin:0 auto;padding:0 36px}
@media (max-width:720px){.cont{padding:0 20px}}

.eb{font-family:"Inter",sans-serif;font-weight:400;font-size:11px;letter-spacing:.34em;color:var(--shu);text-transform:uppercase;display:block;margin-bottom:24px}
h2{font-family:"Shippori Mincho",serif;font-weight:600;font-size:clamp(34px,5.6vw,72px);line-height:1.2;letter-spacing:.04em;margin-bottom:18px;color:var(--ink)}
h2 em{font-style:normal;color:var(--shu);font-weight:700}

/* === Header === */
.hd{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(244,237,226,0.92);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line)}
.hd-in{max-width:1180px;margin:0 auto;padding:14px 36px;display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center}
.brand{display:flex;align-items:center;gap:14px}
.seal{display:flex;align-items:center;justify-content:center;width:46px;height:46px;background:var(--navy);color:var(--washi);font-family:"Shippori Mincho",serif;font-weight:600;font-size:22px;border-radius:50%;letter-spacing:.02em}
.bw{display:flex;flex-direction:column;line-height:1.2}
.b1{font-family:"Shippori Mincho",serif;font-weight:600;font-size:19px;color:var(--ink);letter-spacing:.08em}
.b2{font-family:"Inter",sans-serif;font-weight:400;font-size:10px;letter-spacing:.22em;color:var(--navy);text-transform:uppercase}
.nav{display:flex;justify-content:center;gap:28px}
.nav a{font-family:"Shippori Mincho",serif;font-weight:500;font-size:13px;letter-spacing:.06em;color:var(--ink);position:relative;transition:color .25s}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:1px;background:var(--shu);transform:scaleX(0);transform-origin:right;transition:transform .35s}
.nav a:hover{color:var(--shu)}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}
.cta{padding:9px 18px;background:var(--shu);color:var(--washi);font-family:"Shippori Mincho",serif;font-weight:500;font-size:12px;letter-spacing:.06em;border-radius:2px;transition:background .25s,transform .25s}
.cta:hover{background:var(--navy);transform:translateY(-2px)}
@media (max-width:900px){.hd-in{grid-template-columns:auto 1fr;padding:12px 20px}.nav,.cta{display:none}}

/* === Hero === */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding:140px 36px 100px;background:var(--paper)}
.hero-bg{position:absolute;inset:0;background-image:url('https://images.unsplash.com/photo-1545454675-3531b543be5d?w=2400&q=85&auto=format&fit=crop');background-size:cover;background-position:center;filter:saturate(.85) brightness(.96)}
.hero-bg::before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(244,237,226,0.92) 0%,rgba(244,237,226,0.55) 45%,rgba(26,46,72,0.28) 100%)}
.hero-paper{position:absolute;inset:0;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.4' numOctaves='2'/><feColorMatrix values='0 0 0 0 0.96 0 0 0 0 0.93 0 0 0 0 0.88 0 0 0 0.12 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");pointer-events:none;mix-blend-mode:overlay}
.hero-in{position:relative;z-index:5;max-width:1180px;margin:0 auto;width:100%}
.hero-eb{font-family:"Inter",sans-serif;font-weight:400;font-size:11px;letter-spacing:.34em;color:var(--shu);text-transform:uppercase;display:inline-block;margin-bottom:36px;padding:8px 14px;background:rgba(244,237,226,0.88);border-left:2px solid var(--shu)}
.hero-h{font-family:"Shippori Mincho",serif;font-weight:600;font-size:clamp(50px,9vw,128px);line-height:1.14;letter-spacing:.04em;color:var(--ink)}
.hero-h .line{display:block;animation:fadeUp 1.2s cubic-bezier(.2,.8,.2,1) backwards}
.hero-h .line:nth-child(1){animation-delay:.15s}
.hero-h .line:nth-child(2){animation-delay:.4s}
.hero-h em{font-style:normal;color:var(--shu);font-weight:700}
@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
.hero-sub{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:clamp(14px,1.5vw,17px);line-height:2.1;color:var(--ink);margin-top:34px;max-width:42ch;animation:fadeUp 1.2s cubic-bezier(.2,.8,.2,1) .55s backwards}
.hero-row{display:flex;gap:18px;margin-top:34px;flex-wrap:wrap;animation:fadeUp 1.2s cubic-bezier(.2,.8,.2,1) .7s backwards}
.btn{padding:14px 26px;background:var(--shu);color:var(--washi);font-family:"Shippori Mincho",serif;font-weight:500;font-size:14px;letter-spacing:.06em;border-radius:2px;transition:background .3s,transform .3s}
.btn:hover{background:var(--navy);transform:translateY(-2px)}
.btn-out{padding:14px 26px;background:transparent;color:var(--ink);font-family:"Shippori Mincho",serif;font-weight:500;font-size:14px;letter-spacing:.06em;border:1px solid var(--ink);transition:background .3s,color .3s}
.btn-out:hover{background:var(--ink);color:var(--washi)}
.hero-cert{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px;animation:fadeUp 1.2s cubic-bezier(.2,.8,.2,1) .85s backwards}
.hero-cert span{padding:7px 14px;background:rgba(244,237,226,0.85);border:1px solid var(--line);font-family:"Inter",sans-serif;font-weight:400;font-size:11px;letter-spacing:.1em;color:var(--navy)}
@media (max-width:720px){.hero{padding:140px 20px 100px}}

/* === About === */
.about{padding:140px 0;background:var(--washi)}
.about-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:80px;align-items:start}
.about-l{position:sticky;top:120px}
.about-r p{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:15px;line-height:2.1;color:var(--ink);margin-bottom:22px}
.about-r .sig{margin-top:30px;font-family:"Shippori Mincho",serif;color:var(--navy);border-top:1px solid var(--line);padding-top:20px;font-size:14px;letter-spacing:.06em;font-weight:600}
@media (max-width:900px){.about-grid{grid-template-columns:1fr;gap:36px}.about-l{position:static}}

/* === Symptom === */
.symptom{padding:140px 0;background:var(--paper)}
.sec-head{margin-bottom:60px;max-width:600px}
.sy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sy{background:var(--washi);padding:36px 30px 32px;border-radius:2px;border:1px solid var(--line);position:relative;transition:transform .5s cubic-bezier(.2,.8,.2,1),border-color .5s}
.sy:hover{transform:translateY(-6px);border-color:var(--shu)}
.sy-no{font-family:"Shippori Mincho",serif;font-weight:600;font-size:28px;color:var(--shu);line-height:1;margin-bottom:18px;display:block;letter-spacing:.02em}
.sy h3{font-family:"Shippori Mincho",serif;font-weight:600;font-size:20px;color:var(--ink);margin-bottom:12px;letter-spacing:.04em}
.sy p{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:13.5px;line-height:1.95;color:rgba(26,26,26,0.78)}
@media (max-width:900px){.sy-grid{grid-template-columns:1fr;gap:18px}}

/* === Flow === */
.flow{padding:140px 0;background:var(--navy);color:var(--washi)}
.flow .eb{color:var(--gold)}
.flow h2{color:var(--washi)}
.flow h2 em{color:var(--gold)}
.fl-list{list-style:none;display:flex;flex-direction:column;gap:0;max-width:880px}
.fl-list li{display:grid;grid-template-columns:80px 1fr;gap:32px;padding:30px 0;border-top:1px solid rgba(250,244,232,0.18)}
.fl-list li:first-child{border-top:0}
.fl-no{font-family:"Inter",sans-serif;font-weight:500;font-size:14px;letter-spacing:.22em;color:var(--gold);padding-top:6px}
.fl-list h3{font-family:"Shippori Mincho",serif;font-weight:600;font-size:22px;color:var(--washi);margin-bottom:8px;letter-spacing:.04em}
.fl-list p{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:14px;line-height:1.95;color:rgba(250,244,232,0.85);max-width:48ch}

/* === Book === */
.book{padding:140px 0;background:var(--paper)}
.book-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:start}
.book dl{display:grid;grid-template-columns:84px 1fr;row-gap:14px;margin-top:18px}
.book dt{font-family:"Inter",sans-serif;font-weight:500;font-size:11px;letter-spacing:.22em;color:var(--shu);text-transform:uppercase;padding-top:6px}
.book dd{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:14px;line-height:1.85;border-bottom:1px solid var(--line);padding-bottom:14px}
.book-card{background:var(--washi);padding:42px 36px;border-radius:2px;border:1px solid var(--line);display:flex;flex-direction:column;gap:14px;border-left:3px solid var(--shu)}
.bc-eb{font-family:"Inter",sans-serif;font-weight:500;font-size:11px;letter-spacing:.28em;color:var(--shu);text-transform:uppercase}
.bc-big{font-family:"Shippori Mincho",serif;font-weight:600;font-size:32px;line-height:1.25;color:var(--ink);letter-spacing:.04em}
.bc-big em{font-style:normal;color:var(--shu);font-weight:700}
.bc-sub{font-family:"Noto Sans JP",sans-serif;font-weight:400;font-size:13.5px;line-height:1.95;color:var(--ink);margin-bottom:8px}
.big-link{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;background:var(--paper);border-radius:2px;border:1px solid var(--line);transition:border-color .3s,transform .3s,background .3s;font-family:"Shippori Mincho",serif;font-size:14px;color:var(--ink)}
.big-link span{font-family:"Inter",sans-serif;font-weight:500;color:var(--shu);font-size:12px;letter-spacing:.1em}
.big-link:hover{border-color:var(--shu);transform:translateX(4px);background:var(--washi)}
@media (max-width:900px){.book-grid{grid-template-columns:1fr;gap:36px}}

/* === Footer === */
.ft{background:var(--ink);color:var(--paper);padding:36px 0}
.ft-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-family:"Inter",sans-serif;font-size:11px;letter-spacing:.16em}
.ft-in span:last-child{color:rgba(244,237,226,0.5)}

/* === Reveal === */
.in-view{animation:rise 1s cubic-bezier(.2,.8,.2,1) backwards}
@keyframes rise{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.in-view,.hero-h .line,.hero-sub,.hero-row,.hero-cert{animation:none}}

/* =====================================================
   Level1 共通5モーション (2026-05-12 batch4 追加)
   M1 reveal / M2 ヘッダ縮小 / M3 Ken Burns / M4 行スライド / M5 追従CTA
   ===================================================== */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1)}
[data-reveal].is-in{opacity:1;transform:none}
.hd{transition:padding .3s ease,background .3s ease,box-shadow .3s ease,backdrop-filter .3s ease}
.hd.is-scrolled{box-shadow:0 2px 14px rgba(26,26,26,0.08);backdrop-filter:saturate(140%) blur(10px)}
.hd.is-scrolled .hd-in{padding-top:8px;padding-bottom:8px}
@keyframes l1KenBurns{0%{transform:scale(1) translate(0,0)}100%{transform:scale(1.1) translate(-2%,-1.5%)}}
.l1-kenburns{animation:l1KenBurns 22s ease-in-out infinite alternate;will-change:transform}
.l1-line{display:inline-block;opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1)}
.l1-line.is-in{opacity:1;transform:none}
.l1-fab{position:fixed;right:18px;bottom:18px;z-index:80;padding:14px 22px;border-radius:50px;font-family:inherit;font-weight:700;font-size:14px;letter-spacing:.04em;color:#fff;text-decoration:none;box-shadow:0 10px 26px rgba(0,0,0,0.22);opacity:0;transform:translateY(20px);transition:opacity .35s ease,transform .35s ease,box-shadow .25s ease;display:inline-flex;align-items:center;gap:8px;line-height:1}
.l1-fab.is-visible{opacity:1;transform:none}
.l1-fab:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,0,0,0.28)}
.l1-fab::after{content:"→";font-weight:400;font-size:15px}
@media (max-width:720px){.l1-fab{right:12px;bottom:12px;padding:12px 18px;font-size:13px}}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1!important;transform:none!important;transition:none!important}
  .l1-kenburns{animation:none!important}
  .l1-line{opacity:1!important;transform:none!important;transition:none!important}
  .l1-fab{transition:none!important}
}