/* 株式会社KOKKOK 法人サイト 共通スタイル */
:root{
  --bg:#ffffff;
  --text:#1f1f1f;
  --muted:#6b6b6b;
  --line:#e6e6e6;
  --accent:#1f1f1f;
  --max:1120px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}

/* ヘッダー */
.site-header{
  max-width:var(--max);margin:0 auto;padding:28px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.site-header .logo .wordmark{font-family:"Cochin","Baskerville","Times New Roman",serif;font-size:26px;letter-spacing:.2em;color:var(--text);line-height:1}
.site-nav{display:flex;gap:28px;font-size:13px;letter-spacing:.14em}
.site-nav a{padding:6px 0;border-bottom:1px solid transparent}
.site-nav a:hover,.site-nav a[aria-current="page"]{border-bottom-color:var(--text)}

/* 共通レイアウト */
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section + .section{padding-top:0}
.eyebrow{font-size:12px;letter-spacing:.2em;color:var(--muted);margin:0 0 12px}
h1{font-size:28px;font-weight:500;line-height:1.6;margin:0 0 24px;letter-spacing:.04em}
h2{font-size:20px;font-weight:500;margin:0 0 20px;letter-spacing:.06em}
p{margin:0 0 1em}
.lead{color:var(--muted);max-width:40em}

/* ボタン */
.btn{
  display:inline-block;padding:14px 36px;border:1px solid var(--accent);
  font-size:14px;letter-spacing:.12em;line-height:1;border-radius:2px;
  transition:background .2s,color .2s;cursor:pointer;background:transparent;color:var(--text);
}
.btn:hover{background:var(--accent);color:#fff}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#444}
.btn-ghost{font-size:13px;padding:10px 20px}

/* トップ：ヒーロー */
.hero{padding:40px 0 56px}
.hero h1{font-size:30px;max-width:22em}
.hero .lead{margin-bottom:32px}

/* トップ：できること */
.services{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:32px 28px;border-top:1px solid var(--line);padding-top:32px}
.services h3{font-size:15px;font-weight:600;margin:0 0 8px;letter-spacing:.06em}
.services p{font-size:14px;color:var(--muted);margin:0;line-height:1.8}
.note a{text-decoration:underline;text-underline-offset:4px}
.services-note{margin:36px 0 0;padding-top:20px;border-top:1px solid var(--line)}

/* トップ：事例の横スライド */
.carousel{position:relative;max-width:var(--max);margin:0 auto;padding:0 24px}
.track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:4px}
.track::-webkit-scrollbar{display:none}
.slide{flex:0 0 calc((100% - 32px) / 3);scroll-snap-align:start;position:relative;display:block;background:#f2f2f2;overflow:hidden}
.slide img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s}
.slide:hover img{transform:scale(1.03)}
.slide-title{position:absolute;left:0;right:0;bottom:0;padding:28px 14px 12px;font-size:13px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.55));opacity:0;transition:opacity .25s}
.slide:hover .slide-title{opacity:1}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.92);color:var(--text);font-size:24px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0 0 3px}
.carousel-btn.prev{left:4px}.carousel-btn.next{right:4px}
.carousel-btn:hover{background:#fff;border-color:var(--text)}

/* トップ：事例写真（旧・3枚固定グリッド） */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.work figure{margin:0}
.work img{width:100%;aspect-ratio:3/2;object-fit:cover;background:#f2f2f2}
.work figcaption{margin-top:12px;font-size:13px;line-height:1.7}
.work figcaption small{display:block;color:var(--muted);font-size:12px}

/* 会社概要：定義リスト */
.company{border-top:1px solid var(--line);margin:0;max-width:720px}
.company div{display:grid;grid-template-columns:9em 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.company dt{color:var(--muted);font-size:14px;margin:0}
.company dd{margin:0}
.company a{text-decoration:underline;text-underline-offset:4px}

/* お問い合わせ */
.contact-info{font-size:15px}
.contact-info a{text-decoration:underline;text-underline-offset:4px}
.template{
  background:#f7f7f7;border:1px solid var(--line);border-radius:4px;
  padding:20px 22px;font-size:14px;line-height:1.9;white-space:pre-wrap;
  font-family:inherit;margin:0 0 16px;max-width:640px;
}
.note{font-size:13px;color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:24px 0}
.toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);
  background:#1f1f1f;color:#fff;padding:10px 20px;border-radius:4px;font-size:13px;
  opacity:0;transition:.25s;pointer-events:none;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* フッター */
.site-footer{
  border-top:1px solid var(--line);margin-top:48px;padding:40px 24px 56px;
  font-size:13px;color:var(--muted);
}
.site-footer .inner{max-width:var(--max);margin:0 auto;display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between}
.site-footer a{text-decoration:underline;text-underline-offset:4px}

/* スマホ */
@media (max-width:760px){
  .site-header{flex-direction:column;align-items:flex-start;padding:22px 20px 10px;gap:14px}
  .site-header .logo .wordmark{font-size:22px}
  .site-nav{gap:20px;font-size:12px}
  .wrap{padding:0 20px}
  .section{padding:48px 0}
  h1,.hero h1{font-size:22px}
  .hero{padding:24px 0 40px}
  .works-grid{grid-template-columns:1fr;gap:28px}
  .carousel{padding:0 0 0 20px}
  .track{gap:10px;padding-right:20px}
  .slide{flex-basis:78%}
  .slide-title{display:none}
  .carousel-btn{display:none}
  .services{grid-template-columns:1fr;gap:24px}
  .company div{grid-template-columns:1fr;gap:4px;padding:14px 0}
  .btn{display:block;text-align:center}
  .actions .btn{width:100%}
  .site-footer{padding:32px 20px 44px}
}

/* 事例一覧 */
.work-list{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 24px;margin-top:40px}
.work-card{display:block}
.work-card img{width:100%;aspect-ratio:3/2;object-fit:cover;background:#f2f2f2}
.work-card-title{display:block;margin-top:12px;font-size:14px;line-height:1.6}
.work-card-meta{display:block;font-size:12px;color:var(--muted)}
.more{margin-top:28px;font-size:14px}
.more a{text-decoration:underline;text-underline-offset:4px}

/* 事例詳細 */
.work-head{display:grid;grid-template-columns:320px 1fr;gap:48px;align-items:start;margin:8px 0 48px}
.credits{margin:0;border-top:1px solid var(--line)}
.credits div{display:grid;grid-template-columns:11em 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.credits dt{color:var(--muted);margin:0}
.credits dd{margin:0}
.work-body{max-width:36em;margin:0}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tile{display:block;background:#f2f2f2;overflow:hidden}
.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:opacity .2s}
.tile:hover img{opacity:.85}
.photo-credit{font-size:12px;color:var(--muted);text-align:right;margin:12px 0 0}
.work-nav{display:flex;flex-wrap:wrap;gap:16px 32px;justify-content:space-between;margin:56px 0 32px;padding-top:24px;border-top:1px solid var(--line);font-size:14px}
.work-nav a{text-decoration:underline;text-underline-offset:4px}

/* 拡大表示 */
.lb{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:100;display:flex;align-items:center;justify-content:center}
.lb[hidden]{display:none}
.lb img{max-width:92vw;max-height:88vh;object-fit:contain;box-shadow:0 0 40px rgba(0,0,0,.5)}
.lb button{position:absolute;background:none;border:0;color:#fff;cursor:pointer;font-size:44px;line-height:1;padding:16px;opacity:.8}
.lb button:hover{opacity:1}
.lb-close{top:8px;right:12px;font-size:36px}
.lb-prev{left:4px;top:50%;transform:translateY(-50%)}
.lb-next{right:4px;top:50%;transform:translateY(-50%)}
.lb-count{position:absolute;bottom:14px;left:0;right:0;text-align:center;color:#fff;font-size:12px;letter-spacing:.1em;opacity:.7}
@media (max-width:760px){
  .work-list{grid-template-columns:1fr;gap:32px}
  .work-head{grid-template-columns:1fr;gap:28px}
  .credits div{grid-template-columns:7em 1fr}
  .tiles{grid-template-columns:repeat(2,1fr);gap:8px}
  .lb img{max-width:100vw;max-height:80vh}
  .lb button{font-size:36px;padding:12px}
}

/* お問い合わせフォーム */
.cform{max-width:720px}
.field{margin:0 0 18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;letter-spacing:.04em}
.req{display:inline-block;font-size:11px;color:#fff;background:#8a2d2d;padding:1px 6px;border-radius:2px;margin-left:6px;vertical-align:middle}
.cform input[type=text],.cform input[type=tel],.cform input[type=email],.cform select,.cform textarea{
  width:100%;font:inherit;font-size:15px;padding:11px 12px;border:1px solid #cfcfcf;border-radius:3px;background:#fff;color:var(--text)}
.cform textarea{resize:vertical}
.cform input:focus,.cform select:focus,.cform textarea:focus{outline:none;border-color:var(--text)}
.cform input[readonly]{background:#f4f4f4;color:var(--muted)}
.cform ::placeholder{color:#b0b0b0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:8px}
.check input{width:auto}
.extra{border:1px solid var(--line);border-radius:4px;padding:18px 20px 4px;margin:0 0 22px}
.extra[hidden]{display:none}
.extra legend{font-size:13px;padding:0 6px;color:var(--text);letter-spacing:.06em}
#formMsg{color:#8a2d2d}
@media (max-width:760px){ .grid2{grid-template-columns:1fr} }
.notice{background:#f7f7f7;border:1px solid var(--line);border-radius:4px;padding:20px 22px;margin:0 0 22px}
.notice p{margin:0 0 12px}.notice p:last-child{margin:0}
#commonFields[hidden],#restFields[hidden]{display:none}