/* =========================================================
   WAY corporate site — editorial light × black & gold
   ========================================================= */
:root{
  /* light ground */
  --paper:#f6f4ef;
  --white:#ffffff;
  --ink:#1d1c18;
  --muted:#6b675d;
  --hairline:#e2ded3;
  /* dark ground */
  --black:#0d0d0d;
  --dline:#2b2a25;
  --dink:#f2f0ea;
  --dmuted:#95917f;
  /* brand gold */
  --gold:#d4af37;
  --gold-hi:#f6e27a;
  --gold-deep:#8f7118;   /* text-safe gold on light */
  --gold-grad:linear-gradient(105deg,#a8842a 0%,#d4af37 45%,#f6e27a 78%,#d4af37 100%);
  /* type */
  --serif:'Shippori Mincho','Hiragino Mincho ProN','Yu Mincho',serif;
  --sans:'Zen Kaku Gothic New','Noto Sans JP','Hiragino Kaku Gothic ProN',sans-serif;
  --en:'Oswald','Zen Kaku Gothic New',sans-serif;
  --header-h:76px;
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 4px);}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  line-height:2;
  font-size:15.5px;
  letter-spacing:.03em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
.serif{font-family:var(--serif);font-weight:600;}
.pc{display:inline;}
.sp{display:none;}
.gold{color:var(--gold);}
::selection{background:var(--gold);color:#141414;}

/* ---------- scroll progress（一本の線） ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:130;
  background:var(--gold-grad);
  box-shadow:0 0 12px rgba(212,175,55,.55);
  transform:scaleX(0);transform-origin:left;
  pointer-events:none;
}

/* ---------- buttons & links ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:16px 40px;
  font-family:var(--sans);
  font-size:14px;font-weight:700;letter-spacing:.1em;
  cursor:pointer;border:none;border-radius:0;
  transition:filter .25s ease,transform .25s ease;
}
.btn-gold{background:var(--gold-grad);color:#161512;position:relative;overflow:hidden;}
.btn-gold::after{
  content:"";position:absolute;top:-20%;bottom:-20%;left:-30%;width:24%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.75),transparent);
  transform:skewX(-18deg) translateX(-120%);
  animation:sheen 4.5s ease-in-out 3s infinite;
  pointer-events:none;
}
@keyframes sheen{
  0%{transform:skewX(-18deg) translateX(-120%);}
  28%{transform:skewX(-18deg) translateX(620%);}
  100%{transform:skewX(-18deg) translateX(620%);}
}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-arrow{
  font-family:var(--en);font-weight:400;
  transition:transform .25s ease;
}
.btn:hover .btn-arrow{transform:translateX(5px);}
.btn-nav{padding:11px 24px;font-size:12.5px;}
.link-arrow{
  position:relative;
  font-size:13.5px;font-weight:700;letter-spacing:.1em;
  padding:10px 2px;
}
.link-arrow::before{content:"";position:absolute;left:0;bottom:4px;height:1px;width:100%;background:currentColor;opacity:.45;transition:opacity .25s ease;}
.link-arrow::after{content:"→";font-family:var(--en);margin-left:10px;display:inline-block;transition:transform .25s ease;}
.link-arrow:hover::after{transform:translateX(5px);}
.link-arrow:hover::before{opacity:1;}

/* ---------- header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background-color .35s ease,border-color .35s ease;
  border-bottom:1px solid transparent;
  color:var(--dink);
}
.header-inner{
  max-width:1240px;margin:0 auto;
  height:var(--header-h);
  padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.header-logo img{width:auto;height:25px;}
.header .logo-for-light{display:none;}
.gnav{display:flex;align-items:center;gap:30px;}
.gnav ul{display:flex;gap:26px;}
.gnav ul a{
  font-size:13px;letter-spacing:.08em;
  position:relative;padding:6px 0;
  opacity:.85;transition:opacity .2s ease;
}
.gnav ul a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--gold);transition:width .28s ease;
}
.gnav ul a:hover{opacity:1;}
.gnav ul a:hover::after{width:100%;}
.menu-toggle{display:none;}

/* over light sections */
.header.on-light{
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--hairline);
  color:var(--ink);
}
.header.on-light .logo-for-dark{display:none;}
.header.on-light .logo-for-light{display:block;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:94svh;
  display:flex;align-items:center;
  overflow:hidden;
  background:
    radial-gradient(ellipse 1000px 640px at 80% 22%,rgba(212,175,55,.08),transparent 62%),
    var(--black);
  color:var(--dink);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:var(--grain);opacity:.05;
}
.hero-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;will-change:transform;}
.hero-lines .draw{
  fill:none;
  stroke:url(#goldLine);
  stroke-dasharray:1;
  stroke-dashoffset:1;
  animation:drawline 1.7s cubic-bezier(.6,.05,.2,1) forwards;
}
.hero-lines .draw-1{stroke-width:2;opacity:.85;animation-delay:.25s;}
.hero-lines .draw-2{stroke-width:1;opacity:.4;animation-delay:.55s;}
.hero-lines .glint{
  fill:none;stroke:#fdf6d8;stroke-width:2.6;
  stroke-dasharray:.06 .94;stroke-dashoffset:1.06;
  opacity:.9;
  animation:glint 4.6s cubic-bezier(.4,0,.2,1) 2.4s infinite;
}
@keyframes glint{
  0%{stroke-dashoffset:1.06;}
  55%{stroke-dashoffset:-.06;}
  100%{stroke-dashoffset:-.06;}
}
@keyframes drawline{to{stroke-dashoffset:0;}}

.hero-inner{
  position:relative;z-index:2;
  max-width:1240px;margin:0 auto;
  padding:calc(var(--header-h) + 40px) 32px 100px;
  width:100%;
}
.fade-seq{opacity:0;animation:fadeUp .9s ease forwards;}
.hero-title .fade-seq{animation-name:riseUp;animation-duration:1.1s;animation-timing-function:cubic-bezier(.22,1,.36,1);}
@keyframes riseUp{
  from{opacity:0;transform:translateY(64px);clip-path:inset(0 0 100% 0);letter-spacing:.22em;}
  60%{opacity:1;}
  to{opacity:1;transform:none;clip-path:inset(-10% 0 -10% 0);letter-spacing:.06em;}
}
.hero-inner > .fade-seq:nth-child(1),
.hero-title .fade-seq:nth-child(1){animation-delay:.7s;}
.hero-title .fade-seq{display:inline-block;}
.hero-title .fade-seq:nth-of-type(2){animation-delay:.85s;}
.hero-lead.fade-seq{animation-delay:1.1s;}
.hero-proof.fade-seq{animation-delay:1.3s;}
.hero-cta.fade-seq{animation-delay:1.45s;}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(22px);}
  to{opacity:1;transform:none;}
}
.hero-eyebrow{
  font-size:12.5px;font-weight:500;letter-spacing:.34em;
  color:var(--gold);
  margin-bottom:30px;
  display:flex;align-items:center;gap:16px;
}
.hero-eyebrow::before{content:"";width:44px;height:1px;background:var(--gold);}
.hero-title{
  font-family:var(--serif);
  font-size:clamp(38px,5.4vw,64px);
  font-weight:600;
  line-height:1.52;
  letter-spacing:.06em;
  margin-bottom:32px;
}
.hero-lead{
  font-size:clamp(14.5px,1.35vw,16.5px);
  color:#c9c5ba;
  line-height:2.2;
  margin-bottom:44px;
}
.hero-lead b{
  font-weight:700;font-size:1.12em;
  background:linear-gradient(100deg,#96751d 0%,#c9a42f 45%,#e6c964 80%,#b8912c 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-proof{
  display:flex;flex-wrap:wrap;gap:0;
  margin-bottom:48px;
}
.proof-item{
  display:flex;flex-direction:column;gap:3px;
  border-left:1px solid rgba(212,175,55,.55);
  padding:6px 34px 6px 20px;
}
.proof-label{font-size:10.5px;letter-spacing:.16em;color:var(--gold);}
.proof-num{font-size:13.5px;color:#d8d4c8;}
.proof-num b{
  font-family:var(--en);font-size:25px;font-weight:500;
  color:var(--dink);margin-left:2px;letter-spacing:.02em;
}
.proof-num b small{font-size:13px;font-weight:400;margin-left:1px;}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:34px;}
.scroll-cue{
  position:absolute;left:32px;bottom:0;
  z-index:2;
  font-family:var(--en);font-size:9.5px;letter-spacing:.3em;color:var(--dmuted);
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.scroll-cue span{
  display:block;width:1px;height:52px;
  background:linear-gradient(to bottom,var(--gold),transparent);
  animation:cue 2.2s ease-in-out infinite;
  transform-origin:top;
}
@keyframes cue{0%{transform:scaleY(0);}45%{transform:scaleY(1);}100%{transform:scaleY(1);opacity:0;}}

/* ---------- sections（共通） ---------- */
.section{padding:130px 0;position:relative;}
.container{max-width:1140px;margin:0 auto;padding:0 32px;}
.container-narrow{max-width:840px;}

.sec-paper{background:var(--paper);}
.sec-white{background:var(--white);}
.sec-dark{background:var(--black);color:var(--dink);}
.sec-dark::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:var(--grain);opacity:.045;
}
.sec-dark .container{position:relative;z-index:1;}

.sec-head{margin-bottom:70px;}
.sec-head.reveal{transform:none;}
.sec-head.reveal .sec-title{
  clip-path:inset(0 0 100% 0);
  transform:translateY(40px);
  transition:clip-path 1s cubic-bezier(.22,1,.36,1) .08s,transform 1s cubic-bezier(.22,1,.36,1) .08s;
}
.sec-head.reveal.visible .sec-title{
  clip-path:inset(-10% 0 -10% 0);
  transform:none;
}
.seclabel{
  font-family:var(--en);
  font-size:12px;font-weight:500;letter-spacing:.34em;
  color:var(--gold-deep);
  display:flex;align-items:center;gap:16px;
  margin-bottom:28px;
}
.seclabel::before{content:"";width:44px;height:1px;background:var(--gold-deep);}
.sec-dark .seclabel{color:var(--gold);}
.sec-dark .seclabel::before{background:var(--gold);}

.sec-title{
  font-size:clamp(27px,3.3vw,40px);
  line-height:1.65;
  letter-spacing:.05em;
  text-wrap:balance;
  margin-bottom:26px;
}
.sec-title em{font-style:normal;}
.sec-lead{
  max-width:720px;
  color:#514e45;
  margin-bottom:0;
}
.sec-dark .sec-lead{color:#b9b5a8;}

/* ---------- philosophy ---------- */
.way-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px 52px;
  margin-bottom:88px;
}
.way-item{position:relative;padding-top:36px;transition:transform .5s cubic-bezier(.22,1,.36,1);}
.way-item:hover{transform:translateY(-8px);}
.way-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(to right,var(--gold) 52px,var(--hairline) 52px);
  transform:scaleX(0);transform-origin:left;
  transition:transform 1.2s cubic-bezier(.22,1,.36,1) .25s;
}
.way-item.visible::before{transform:scaleX(1);}
.way-item:nth-child(2){margin-top:60px;}
.way-item:nth-child(3){margin-top:120px;}
.way-tag{
  font-size:12px;letter-spacing:.2em;color:var(--gold-deep);
  font-weight:500;
  margin-bottom:18px;
}
.way-item h3{
  font-size:clamp(20px,1.85vw,24px);
  letter-spacing:.07em;
  margin-bottom:16px;
}
.way-text{color:#514e45;font-size:14px;}

.logo-meaning{
  display:flex;align-items:center;gap:56px;
  border-top:1px solid var(--hairline);
  border-bottom:1px solid var(--hairline);
  padding:44px 8px;
  margin-bottom:96px;
}
.logo-meaning img{width:200px;flex-shrink:0;}
.logo-meaning p{font-size:14px;color:#514e45;}
.logo-meaning b{color:var(--gold-deep);font-weight:700;}

.brand-message{
  text-align:center;
  font-size:clamp(19px,2.3vw,26px);
  line-height:2.2;
  letter-spacing:.08em;
  position:relative;
  padding-top:52px;
}
.brand-message::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:1px;height:34px;background:var(--gold);
}
.brand-message em{font-style:normal;color:var(--gold-deep);}

/* ---------- approach ---------- */
.approach-list{border-bottom:1px solid var(--hairline);}
.approach-row{
  display:grid;grid-template-columns:minmax(240px,36%) 1fr;gap:24px 56px;
  padding:52px 8px;
  position:relative;
}
.approach-row::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--hairline);
  transform:scaleX(0);transform-origin:left;
  transition:transform 1.2s cubic-bezier(.22,1,.36,1) .15s;
}
.approach-row.visible::before{transform:scaleX(1);}
.approach-row h3{
  font-size:clamp(20px,2vw,25px);
  letter-spacing:.07em;
  line-height:1.7;
}
.approach-row p{color:#514e45;font-size:14.5px;max-width:600px;}

/* ---------- service ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:44px;
  margin-bottom:80px;
  counter-reset:step;
}
.step{position:relative;padding-top:26px;}
.step::before{
  content:"";position:absolute;top:0;left:0;right:-44px;height:1px;
  background:var(--hairline);
}
.step:last-child::before{right:0;}
.step::after{
  content:"";position:absolute;top:-2px;left:0;
  width:34px;height:5px;background:var(--gold-grad);
}
.step-num{
  font-family:var(--en);font-size:15px;font-weight:500;
  color:var(--gold-deep);letter-spacing:.14em;
  margin-bottom:12px;
}
.step h3{font-size:16.5px;font-weight:700;letter-spacing:.05em;margin-bottom:8px;}
.step p{font-size:13px;color:var(--muted);line-height:1.9;}

.service-domains{padding-top:8px;}
.domains-label{
  font-size:12px;letter-spacing:.22em;color:var(--gold-deep);font-weight:500;
  margin-bottom:20px;
}
.domain-list{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0 48px;
  margin-bottom:30px;
}
.domain-list li{
  font-size:13.5px;color:#3c3a33;
  border-bottom:1px solid var(--hairline);
  padding:13px 2px;
  display:flex;align-items:center;gap:12px;
}
.domain-list li::before{content:"—";color:var(--gold);flex-shrink:0;}
.tech-line{font-size:12px;color:var(--muted);letter-spacing:.05em;}


/* ---------- case study ---------- */
.client-line{
  display:flex;flex-wrap:wrap;
  margin-bottom:64px;
}
.client-line > div{
  padding:2px 32px 2px 0;margin-right:32px;
  border-right:1px solid var(--dline);
}
.client-line > div:last-child{border-right:none;margin-right:0;}
.client-line dt{font-size:10.5px;letter-spacing:.16em;color:var(--gold);margin-bottom:4px;}
.client-line dd{font-size:14.5px;font-weight:700;}

.case-result{
  display:grid;grid-template-columns:minmax(280px,40%) 1fr;gap:32px 72px;
  align-items:center;
  margin-bottom:72px;
}
.result-big.reveal .num{
  filter:blur(14px);opacity:0;transform:scale(.94);
  transition:filter 1.1s ease .2s,opacity 1.1s ease .2s,transform 1.1s cubic-bezier(.22,1,.36,1) .2s;
}
.result-big.reveal.visible .num{filter:blur(0);opacity:1;transform:none;}
.result-big .lab{font-size:12px;color:var(--gold);letter-spacing:.12em;margin-bottom:12px;}
.result-big .num{
  font-family:var(--en);font-weight:500;font-size:clamp(76px,8vw,112px);line-height:1;
  background:var(--gold-grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.result-big .num .unit{font-size:.32em;}
.result-big .desc{font-size:13px;color:#b9b5a8;margin-top:14px;}
.result-points{display:flex;flex-direction:column;gap:18px;}
.result-points li{
  font-size:14.5px;line-height:1.9;color:#d5d1c4;
  padding-left:24px;position:relative;
}
.result-points li::before{
  content:"";position:absolute;left:0;top:.85em;
  width:12px;height:1px;background:var(--gold);
}
.result-points b{color:var(--dink);}

.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-bottom:40px;
}
.metric{
  border-left:1px solid var(--dline);
  padding:10px 32px;
}
.metric:first-child{border-left:none;padding-left:0;}
.metric .task{font-size:12.5px;color:var(--dmuted);margin-bottom:12px;}
.metric .flow{
  font-family:var(--en);font-weight:500;font-size:17px;color:#7d796b;
  font-variant-numeric:tabular-nums;
}
.metric .flow .arrow{color:var(--gold);margin:0 8px;}
.metric .flow .now{color:var(--dink);font-size:30px;}
.metric .cut{margin-top:10px;font-size:11.5px;color:var(--dmuted);}
.metric .cut b{
  font-family:var(--en);font-size:23px;font-weight:500;
  color:var(--gold);letter-spacing:.02em;margin-left:8px;
  font-variant-numeric:tabular-nums;
}
.case-more{
  font-size:13px;color:var(--dmuted);
  border-top:1px solid var(--dline);
  padding:22px 2px 0;
  margin-bottom:14px;
  line-height:2;
}
.case-more b{color:#cdc9ba;font-weight:700;}
.case-note{font-size:11.5px;color:#6f6b5e;}

.case-other{
  margin-top:64px;
  border-top:1px solid var(--dline);
  padding-top:48px;
  display:grid;grid-template-columns:minmax(240px,36%) 1fr;gap:20px 56px;
}
.other-label{
  grid-column:1 / -1;
  font-size:12px;letter-spacing:.2em;color:var(--gold);font-weight:500;
}
.case-other h3{
  font-size:clamp(20px,2vw,25px);
  letter-spacing:.07em;
  line-height:1.7;
}
.case-other p:last-child{color:#c3bfb2;font-size:14px;max-width:640px;}
.case-other b{color:var(--dink);}

/* ---------- message ---------- */
.message-grid{
  display:grid;grid-template-columns:minmax(300px,380px) 1fr;
  gap:28px 76px;
  align-items:start;
}
.message-photo{position:relative;margin:6px 0 0;overflow:hidden;}
.message-photo img{
  width:100%;height:auto;display:block;
  transform:scale(1.08);
  transition:transform 1.4s cubic-bezier(.22,1,.36,1) .1s;
}
.message-photo.visible img{transform:scale(1);}
.message-photo .curtain{
  position:absolute;inset:0;background:var(--black);
  transform:scaleX(1);transform-origin:right;
  transition:transform 1s cubic-bezier(.7,0,.2,1) .15s;
}
.message-photo.visible .curtain{transform:scaleX(0);}
.message-photo::after{
  content:"";position:absolute;left:-14px;bottom:-14px;
  width:72px;height:72px;
  border-left:1px solid var(--gold);
  border-bottom:1px solid var(--gold);
}
.message-body p{margin-bottom:28px;color:#33312a;font-size:15.5px;line-height:2.2;}
.message-body .sign{
  margin-top:44px;
  display:flex;flex-direction:column;align-items:flex-end;gap:5px;
}
.message-body .sign span{font-size:12px;color:var(--muted);}
.message-body .sign b{font-size:25px;font-weight:600;letter-spacing:.16em;}

/* ---------- company ---------- */
.company-list > div{
  display:grid;grid-template-columns:190px 1fr;gap:24px;
  border-bottom:1px solid var(--hairline);
  padding:22px 4px;
  font-size:14px;line-height:1.9;
}
.company-list > div:first-child{border-top:1px solid var(--hairline);}
.company-list dt{font-weight:700;letter-spacing:.06em;}
.company-list dd{color:#33312a;}

/* ---------- contact ---------- */
.sec-contact{
  background:
    radial-gradient(ellipse 900px 560px at 50% -10%,rgba(212,175,55,.07),transparent 62%),
    var(--black);
}
.contact-form{max-width:760px;}
.hidden-field{display:none;}
.form-row{margin-bottom:34px;}
.contact-form label{
  display:block;font-size:12.5px;font-weight:700;letter-spacing:.08em;
  margin-bottom:10px;color:#d8d4c8;
}
.req{
  display:inline-block;
  font-size:10px;font-weight:700;color:var(--gold);
  border:1px solid rgba(212,175,55,.6);
  padding:1px 8px;margin-left:10px;
  vertical-align:2px;letter-spacing:.08em;
}
.contact-form input,
.contact-form select,
.contact-form textarea{
  width:100%;
  background:transparent;
  border:none;
  border-bottom:1px solid #45423a;
  border-radius:0;
  color:var(--dink);
  font-family:var(--sans);
  font-size:15px;
  padding:10px 2px 12px;
  transition:border-color .25s ease;
}
.contact-form select{
  appearance:none;-webkit-appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--gold) 50%),linear-gradient(135deg,var(--gold) 50%,transparent 50%);
  background-position:calc(100% - 16px) 55%,calc(100% - 10px) 55%;
  background-size:6px 6px;
  background-repeat:no-repeat;
  cursor:pointer;
}
.contact-form select:invalid{color:#7d796b;}
.contact-form select option{color:var(--ink);background:#fff;}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{outline:none;border-bottom-color:var(--gold);}
.contact-form ::placeholder{color:#5d5a4f;}
.contact-form textarea{resize:vertical;min-height:120px;}
.btn-submit{margin-top:10px;padding:18px 56px;font-size:14.5px;}

/* ---------- footer ---------- */
.footer{
  background:var(--black);
  color:var(--dink);
  border-top:1px solid var(--dline);
  padding:72px 0 0;
}
.footer-inner{
  display:flex;justify-content:space-between;gap:48px;
  padding-bottom:56px;
  flex-wrap:wrap;
}
.footer-brand img{width:140px;margin-bottom:18px;}
.footer-brand p{font-size:12px;color:var(--dmuted);letter-spacing:.08em;}
.footer-nav{display:flex;gap:64px;}
.footer-nav ul{display:flex;flex-direction:column;gap:13px;}
.footer-nav a{font-size:12.5px;color:#b6b2a4;transition:color .2s ease;}
.footer-nav a:hover{color:var(--gold);}
.footer-sns a{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;color:var(--dmuted);
  transition:color .2s ease;
}
.footer-sns a:hover{color:var(--gold);}
.copyright{
  text-align:center;
  font-family:var(--en);
  font-size:10.5px;font-weight:400;letter-spacing:.18em;color:#666254;
  border-top:1px solid var(--dline);
  padding:24px 16px;
}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;transform:translateY(48px);
  transition:opacity 1s cubic-bezier(.22,1,.36,1),transform 1s cubic-bezier(.22,1,.36,1);
  transition-delay:var(--d,0s);
}
.reveal.visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal,.fade-seq{opacity:1;transform:none;transition:none;animation:none;}
  .hero-lines .draw{animation:none;stroke-dashoffset:0;}
  .scroll-cue span{animation:none;}
  .scroll-progress{display:none;}
  .sec-head.reveal .sec-title{clip-path:none;transform:none;transition:none;}
  .way-item::before,.approach-row::before{transform:scaleX(1);transition:none;}
  .message-photo img{transform:none;transition:none;}
  .message-photo .curtain{display:none;}
  .result-big.reveal .num{filter:none;opacity:1;transform:none;transition:none;}
  .hero-lines .glint{animation:none;opacity:0;}
  .btn-gold::after{animation:none;}
  .way-item:hover{transform:none;}
}

/* =========================================================
   responsive
   ========================================================= */
@media(max-width:960px){
  .way-grid{grid-template-columns:1fr;gap:56px;}
  .way-item:nth-child(2),.way-item:nth-child(3){margin-top:0;}
  .approach-row{grid-template-columns:1fr;gap:14px;padding:40px 4px;}
  .steps{grid-template-columns:1fr 1fr;gap:40px 32px;}
  .step::before{right:0;}
  .domain-list{grid-template-columns:1fr 1fr;}
  .case-result{grid-template-columns:1fr;gap:36px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-left:none;border-top:1px solid var(--dline);padding:20px 2px;}
  .metric:first-child{border-top:none;padding-top:0;}
  .logo-meaning{flex-direction:column;text-align:center;gap:30px;padding:40px 12px;margin-bottom:72px;}
  .footer-inner{flex-direction:column;gap:40px;}
}

@media(max-width:820px){
  .pc{display:none;}
  .sp{display:inline;}
  .section{padding:88px 0;}
  .sec-head{margin-bottom:52px;}

  /* mobile nav */
  .menu-toggle{
    display:flex;flex-direction:column;justify-content:center;gap:6px;
    width:44px;height:44px;padding:10px;
    background:transparent;border:none;cursor:pointer;
    z-index:210;
    color:var(--gold);
    -webkit-appearance:none;appearance:none;
  }
  .header.on-light .menu-toggle{color:var(--gold-deep);}
  .menu-toggle span{
    display:block;height:1.5px;width:100%;
    background:currentColor;
    transition:transform .3s ease,opacity .3s ease,background-color .3s ease;
  }
  body.nav-open .menu-toggle{color:var(--gold);}
  body.nav-open .menu-toggle span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
  body.nav-open .menu-toggle span:nth-child(2){opacity:0;}
  body.nav-open .menu-toggle span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}

  .gnav{
    position:fixed;inset:0;
    background:rgba(10,10,10,.97);
    color:var(--dink);
    flex-direction:column;justify-content:center;gap:40px;
    opacity:0;visibility:hidden;
    transition:opacity .35s ease,visibility .35s ease;
    z-index:200;
  }
  body.nav-open .gnav{opacity:1;visibility:visible;}
  .gnav ul{flex-direction:column;align-items:center;gap:24px;}
  .gnav ul a{font-size:16px;letter-spacing:.12em;opacity:1;}
  .btn-nav{padding:14px 46px;font-size:14px;}

  .hero{min-height:100svh;}
  .hero-title{font-size:clamp(30px,8.8vw,38px);letter-spacing:.04em;}
  .hero-inner{padding-top:calc(var(--header-h) + 20px);padding-bottom:120px;}
  .hero-proof{flex-direction:column;gap:16px;}
  .proof-item{padding:2px 0 2px 18px;}
  .hero-cta{gap:24px;}
  .hero-cta .btn{width:100%;}
  .scroll-cue{left:50%;transform:translateX(-50%);}

  .client-line{gap:14px 0;}
  .client-line > div{flex:1 1 46%;border-right:none;padding-right:0;margin-right:0;}
  .steps{grid-template-columns:1fr;gap:34px;}
  .domain-list{grid-template-columns:1fr;}
  .case-other{grid-template-columns:1fr;gap:14px;padding-top:40px;margin-top:48px;}
  .message-grid{grid-template-columns:1fr;}
  .message-photo{max-width:340px;margin:0 auto 10px;}
  .company-list > div{grid-template-columns:110px 1fr;gap:16px;padding:18px 2px;}
  .footer-nav{gap:38px;}
  .btn-submit{width:100%;}
}