:root{
  --bg:#f7f4f1;
  --bg-card:#fdfcfa;
  --ink:#211e1c;
  --ink-soft:#333333;
  --line:#211e1c;
  --line-soft:#c9c0ba;
  --accent:#c2703e;
  --max:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans JP",sans-serif;
  font-weight:300;
  line-height:2;
  letter-spacing:.04em;
  font-feature-settings:"palt";
}
.serif{font-family:"Shippori Mincho",serif;font-weight:500}
.wrap{max-width:var(--max);margin:0 auto;padding:0 6vw}
section{padding:120px 0}
a{color:inherit}

.fade{opacity:0;transform:translateY(12px);transition:opacity .9s ease,transform .9s ease}
.fade.on{opacity:1;transform:none}

/* ===== header ===== */
header{
  position:fixed;top:0;left:0;right:0;z-index:10;
  display:flex;justify-content:space-between;align-items:center;
  padding:22px 6vw;
  background:rgba(253,252,250,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(201,192,186,.35);
}
.logo{font-weight:500;letter-spacing:.18em;font-size:15px;text-decoration:none}
nav{display:flex;gap:30px;font-size:12.5px;letter-spacing:.12em}
nav a{text-decoration:none;border-bottom:1px solid transparent;padding-bottom:2px}
nav a:hover,nav a.current{border-bottom-color:var(--ink)}
@media(max-width:860px){nav{display:none}}

/* ===== page hero (下層) ===== */
.page-hero{padding:200px 0 80px}
.page-hero .sec-label{margin-bottom:24px}
.page-hero h1{font-size:clamp(28px,4vw,46px);font-weight:600;line-height:1.8;letter-spacing:.06em}
.page-hero .lead{margin-top:28px;max-width:600px;font-size:16px;color:var(--ink-soft)}

/* ===== top hero ===== */
.hero{min-height:92vh;display:flex;align-items:center;padding-top:120px;position:relative;overflow:hidden}
#hero-art{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero-inner{width:100%;position:relative;z-index:1}
.hero h1{font-size:clamp(28px,4.6vw,56px);line-height:1.7;letter-spacing:.06em;font-weight:600}
.hero .lead{margin-top:36px;font-size:16px;color:var(--ink-soft)}
@media(max-width:760px){.hero .lead br{display:none}}
.hero .since{margin-top:64px;font-size:12px;letter-spacing:.22em;color:var(--ink-soft)}

/* ===== 写真ストリップ（旧・数字バー） ===== */
.photo-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;padding:40px 0}
.strip-track{display:flex;width:max-content;animation:strip-flow 40s linear infinite}
.strip-item{margin-right:24px}
.photo-strip:hover .strip-track{animation-play-state:paused}
.strip-item{flex:0 0 auto;width:31vw;min-width:280px;margin:0}
.strip-item .ph{aspect-ratio:4/3;background:var(--bg-card);border:1px solid var(--line-soft);display:flex;align-items:center;justify-content:center;font-size:11px;letter-spacing:.26em;color:var(--ink-soft)}
.strip-item .ph img,.strip-item img{width:100%;height:100%;object-fit:cover;display:block}
.strip-item figcaption{margin-top:12px;font-size:12.5px;letter-spacing:.06em;color:var(--ink-soft)}
@keyframes strip-flow{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(max-width:760px){.strip-item{width:72vw}}
@media(prefers-reduced-motion:reduce){.strip-track{animation:none}}

/* ===== 見出し ===== */
.sec-label{font-size:12px;letter-spacing:.26em;color:var(--ink-soft);margin-bottom:20px}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:600;line-height:1.8;letter-spacing:.06em}
.sec-body{margin-top:28px;font-size:16px;color:var(--ink-soft)}

/* ===== 二枚看板 ===== */
.doors-label{margin-top:88px;font-size:19px;font-weight:600;letter-spacing:.12em}
.doors-label::after{content:"";display:block;width:32px;border-bottom:1px solid var(--ink);margin-top:10px}
.doors{display:grid;grid-template-columns:repeat(3,1fr);margin-top:32px;border:1px solid var(--line)}
.door{background:var(--bg-card);padding:64px 48px;position:relative;text-decoration:none;display:block;transition:filter .3s}
.door:nth-child(1){background:#fdf6ee}  /* 薄いオレンジ（花パレット由来） */
.door:nth-child(2){background:#f0f4f8}  /* 薄いスカイブルー */
.door:nth-child(3){background:#f1f6f1}  /* 薄いグリーン */
.door:hover{filter:brightness(1.02)}
.door+.door{border-left:1px solid var(--line)}
/* 3枚扉: 左からしゅっしゅっしゅっ */
.doors .door{opacity:0;transform:translateY(44px)}
.doors.on .door{opacity:1;transform:none}
.doors.on .door:nth-child(1){transition:opacity .55s ease .05s,transform .55s cubic-bezier(.2,.9,.3,1) .05s}
.doors.on .door:nth-child(2){transition:opacity .55s ease .25s,transform .55s cubic-bezier(.2,.9,.3,1) .25s}
.doors.on .door:nth-child(3){transition:opacity .55s ease .45s,transform .55s cubic-bezier(.2,.9,.3,1) .45s}
@media(prefers-reduced-motion:reduce){.doors .door{opacity:1;transform:none}}
.door .no{font-family:"Shippori Mincho",serif;font-size:13px;letter-spacing:.2em;color:var(--ink-soft)}
.door h3{margin-top:18px;font-size:22px;font-weight:600;letter-spacing:.08em}
.door p{margin-top:20px;font-size:15px;color:var(--ink-soft)}
.door .more{display:inline-block;margin-top:28px;font-size:12px;letter-spacing:.18em;border-bottom:1px solid var(--ink);padding-bottom:3px}
.door ul{margin-top:24px;list-style:none;font-size:13.5px}
.door li{padding:10px 0;border-bottom:1px solid var(--line-soft)}
.door li:last-child{border-bottom:none}
@media(max-width:900px){.doors{grid-template-columns:1fr}.door+.door{border-left:none;border-top:1px solid var(--line)}.door{padding:44px 28px}}

/* ===== 発注スキーム ===== */
.scheme{display:grid;grid-template-columns:1fr 1fr;gap:8vw;align-items:center;margin-top:72px}
.scheme-diagram svg{width:100%;height:auto}
.scheme-cards{display:flex;flex-direction:column;gap:20px}
.scard{background:var(--bg-card);padding:36px;border-radius:4px}
.scard h4{font-size:16.5px;font-weight:500;letter-spacing:.06em;border-bottom:1px solid var(--ink);display:inline-block;padding-bottom:4px}
.scard p{margin-top:14px;font-size:14.5px;color:var(--ink-soft)}
@media(max-width:900px){.scheme{grid-template-columns:1fr}}

/* ===== process ===== */
.proc{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);margin-top:64px}
.pstep{background:var(--bg-card);padding:32px 22px;display:flex;flex-direction:column}
.pno{font-size:22px;line-height:1}
.pstep h4{margin-top:14px;font-size:15.5px;font-weight:500;letter-spacing:.08em;border-bottom:1px solid var(--ink);display:inline-block;align-self:flex-start;padding-bottom:3px}
.pstep p{margin-top:12px;font-size:13.5px;color:var(--ink-soft);flex:1}
.pai{display:flex;flex-direction:column;align-items:flex-start;margin-top:auto;font-size:12px;letter-spacing:.04em;color:var(--accent);border-top:1px dashed var(--line-soft);padding-top:14px;min-height:190px}
.ai-tag{display:inline-block;background:var(--accent);color:#faf7f5;font-size:9.5px;font-weight:500;letter-spacing:.22em;padding:2px 14px 2px 16px;border-radius:99px;margin-bottom:10px;font-family:"Noto Sans JP",sans-serif}
@media(max-width:900px){.pai{min-height:0}}
.proc-base{margin-top:28px;text-align:center;font-size:12px;letter-spacing:.12em;color:var(--ink-soft)}
@media(max-width:900px){.proc{grid-template-columns:1fr}}

/* ===== works ===== */
.works-list{margin-top:72px}
.work{display:grid;grid-template-columns:200px 1fr;gap:40px;padding:48px 0;border-top:1px solid var(--line-soft)}
.work:last-child{border-bottom:1px solid var(--line-soft)}
.work .w-num{font-family:"Shippori Mincho",serif;font-size:clamp(22px,2.6vw,32px);font-weight:500;line-height:1.4}
.work h4{font-size:17px;font-weight:500;letter-spacing:.06em}
.work p{margin-top:12px;font-size:14.5px;color:var(--ink-soft)}
.work .src{margin-top:10px;font-size:11.5px;letter-spacing:.06em;color:var(--ink-soft)}
.work .src a{text-decoration:underline;text-underline-offset:3px}
@media(max-width:760px){.work{grid-template-columns:1fr;gap:12px;padding:36px 0}}

/* ===== network ===== */
.net{margin-top:72px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft)}
.net div{background:var(--bg);padding:36px 32px}
.net b{display:block;font-size:15.5px;font-weight:500;letter-spacing:.08em}
.net span{display:block;margin-top:8px;font-size:14px;color:var(--ink-soft)}
.net .hub{background:var(--ink);color:var(--bg)}
.net .hub span{color:#bdb4ad}
@media(max-width:760px){.net{grid-template-columns:1fr}}

/* ===== about ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:8vw;margin-top:64px}
.profile p{font-size:15px;color:var(--ink-soft)}
.profile .name{font-size:20px;color:var(--ink);font-weight:500;letter-spacing:.1em;margin-bottom:20px}
.company dl{font-size:14.5px}
.company dt{color:var(--ink-soft);padding-top:18px;font-size:12px;letter-spacing:.14em}
.company dd{border-bottom:1px solid var(--line-soft);padding-bottom:18px}
@media(max-width:760px){.about-grid{grid-template-columns:1fr;gap:48px}}

/* ===== CTA ===== */
.cta{background:var(--ink);color:var(--bg);text-align:center;padding:140px 6vw}
.cta .sec-label{color:#a39a92}
.cta h2{font-size:clamp(24px,3.4vw,40px);font-weight:600;line-height:1.9;letter-spacing:.06em}
.cta p{margin-top:28px;font-size:15px;color:#bdb4ad;max-width:560px;margin-left:auto;margin-right:auto}
.btn{display:inline-block;margin-top:48px;padding:20px 64px;border:1px solid var(--bg);font-size:14px;letter-spacing:.18em;text-decoration:none;transition:background .3s,color .3s}
.btn:hover{background:var(--bg);color:var(--ink)}

/* ===== ページ下の次ページ誘導 ===== */
.next-link{padding:0 0 120px}
.next-link a{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:48px 0 0;text-decoration:none}
.next-link .nl-label{font-size:12px;letter-spacing:.26em;color:var(--ink-soft)}
.next-link .nl-title{font-size:clamp(20px,2.6vw,30px);font-weight:600;font-family:"Shippori Mincho",serif}
.next-link .nl-arrow{font-size:24px}

footer{padding:56px 6vw;display:flex;justify-content:space-between;font-size:11.5px;letter-spacing:.1em;color:var(--ink-soft)}
@media(max-width:760px){footer{flex-direction:column;gap:8px}}

/* ===== works カテゴリ見出し ===== */
.works-category{padding-top:16px}
.works-cat-label{margin-bottom:10px}
.works-cat-title{font-size:clamp(16px,1.8vw,22px);font-weight:500;letter-spacing:.06em;line-height:1.7}
.works-cat-lead{margin-top:14px;font-size:13.5px;color:var(--ink-soft);max-width:640px}

/* ===== 下層: 詳細リスト ===== */
.detail{margin-top:72px}
.detail-item{display:grid;grid-template-columns:240px 1fr;gap:48px;padding:56px 0;border-top:1px solid var(--line-soft)}
.detail-item:last-child{border-bottom:1px solid var(--line-soft)}
.detail-item h3{font-size:18px;font-weight:500;letter-spacing:.08em;line-height:1.8}
.detail-item p{font-size:15px;color:var(--ink-soft)}
.detail-item ul{list-style:none;margin-top:16px;font-size:14.5px}
.detail-item li{padding:8px 0;border-bottom:1px dashed var(--line-soft)}
.detail-item li:last-child{border-bottom:none}
.detail-item .tag{display:inline-block;margin-top:14px;font-size:11px;letter-spacing:.1em;color:var(--accent);border:1px solid var(--accent);border-radius:99px;padding:2px 14px}
@media(max-width:760px){.detail-item{grid-template-columns:1fr;gap:16px;padding:40px 0}}

/* ===== team pros ===== */
.pros{margin-top:64px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft)}
.pro{background:var(--bg-card);padding:32px 28px}
.pro b{display:block;font-size:15px;font-weight:500;letter-spacing:.06em;line-height:1.8}
.pro span{display:block;margin-top:8px;font-size:13px;color:var(--ink-soft)}
@media(max-width:900px){.pros{grid-template-columns:1fr}}
.ai-note{margin-top:32px;max-width:760px;font-size:13px;color:var(--ink-soft);border-left:2px solid var(--accent);padding-left:20px;line-height:2}
@media(max-width:760px){.sec-body br,.page-hero .lead br,.scard p br{display:none}}