/* case-studies.css - このページ固有のスタイル */
:root{
    --navy:#0a2540; --navy-deep:#06182b;
    --blue:#1a6dc4; --blue-bright:#2f8fe0; --blue-pale:#eaf3fb; --sky:#d6e9f8;
    --ink:#24333f; --gray:#5c6b7a; --line:#e6edf3; --bg:#f6fafd;
    --serif:-apple-system,BlinkMacSystemFont,'Segoe UI','Hiragino Kaku Gothic ProN','Hiragino Sans','Yu Gothic UI','Yu Gothic','Meiryo',sans-serif;
    --sans:-apple-system,BlinkMacSystemFont,'Segoe UI','Hiragino Kaku Gothic ProN','Hiragino Sans','Yu Gothic UI','Yu Gothic','Meiryo',sans-serif;
    --latin:-apple-system,BlinkMacSystemFont,'Segoe UI','Hiragino Kaku Gothic ProN','Hiragino Sans','Yu Gothic UI','Yu Gothic','Meiryo',sans-serif;
  }
/* === site header (現行サイト準拠) === */
  .site-head{background:#fff;border-bottom:1px solid #eef1f4;position:sticky;top:0;z-index:60}
.sh-cta{display:flex;align-items:center;gap:8px;background:#e8654f;color:#fff;height:66px;padding:0 22px;font-size:16px;font-weight:700;text-decoration:none;transition:background .2s}
.sh-burger{display:none}
@media(max-width:1080px){
    .sh-nav,.sh-tel .hours{display:none}
    .sh-tel{height:46px;border-radius:6px;padding:0 14px}
    .sh-tel .num{font-size:17px}
    .sh-cta{height:46px;border-radius:6px;padding:0 16px;font-size:15px}
    .site-head .inner{gap:12px}
  }
.crumb{background:var(--bg);padding:11px 0;font-size:13.5px;color:var(--gray)}
.crumb .wrap{max-width:1080px}
.hero{background:linear-gradient(120deg,#0a2540,#143a63 60%,#1a6dc4);color:#fff;padding:64px 0 60px;position:relative;overflow:hidden;text-align:center}
.hero::before{content:"";position:absolute;inset:0;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><path d="M0 30h60M30 0v60" stroke="%23ffffff" stroke-width="0.5" opacity="0.06"/></svg>')}
.hero-inner{position:relative;z-index:2}
.hero .cat{display:inline-block;font-family:var(--latin);font-weight:700;font-size:14px;letter-spacing:.14em;color:var(--sky);margin-bottom:16px}
.hero h1{font-family:var(--serif);font-weight:800;font-size:48px;line-height:1.3;margin-bottom:18px}
.hero p{font-size:16px;color:rgba(255,255,255,.85);max-width:680px;margin:0 auto;line-height:2}
.hero .stats{display:flex;justify-content:center;gap:44px;margin-top:36px;flex-wrap:wrap}
.hero .stat b{display:block;font-family:var(--latin);font-weight:700;font-size:34px;color:#fff;line-height:1}
.hero .stat b small{font-size:55%}
.hero .stat span{font-size:13.5px;color:rgba(255,255,255,.72);margin-top:6px;display:block}
.listing{padding:70px 0 30px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:980px){.grid{grid-template-columns:1fr 1fr;gap:18px}}
@media(max-width:560px){.grid{grid-template-columns:1fr;gap:18px}}
.card{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;position:relative}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--acc);z-index:3}
.card-cap{height:150px;overflow:hidden;background:var(--bg);border-bottom:1px solid var(--line);position:relative}
.card-cap img{width:100%;height:auto;display:block}
.card-cap::after{content:"";position:absolute;inset:0;box-shadow:inset 0 -40px 40px -20px rgba(255,255,255,.6)}
.card-body{padding:18px 18px 20px}
.card-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.card-ic{width:38px;height:38px;border-radius:10px;background:color-mix(in srgb, var(--acc) 12%, #fff);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.card-cat{font-size:12.5px;font-weight:700;color:var(--acc);letter-spacing:.02em}
.card h3{font-family:var(--serif);font-size:18px;font-weight:800;color:var(--navy);margin-bottom:8px;line-height:1.4}
.card p{font-size:14px;color:#46535f;line-height:1.8;margin-bottom:14px;min-height:72px}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.card-tags span{font-size:12.5px;color:var(--acc);background:color-mix(in srgb, var(--acc) 9%, #fff);padding:4px 11px;border-radius:99px}
.card-more{display:inline-flex;align-items:center;font-size:14.5px;font-weight:700;color:#fff;background:var(--acc);padding:10px 20px;border-radius:99px;transition:transform .25s, box-shadow .25s}
.card:hover .card-more{transform:translateY(-2px);box-shadow:0 8px 18px rgba(10,37,64,.18)}
.cta{background:linear-gradient(160deg,var(--blue),var(--navy));color:#fff;text-align:center;position:relative;overflow:hidden;margin-top:50px;padding:80px 0}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 320px at 50% 0%,rgba(47,143,224,.3),transparent 60%)}
.cta-inner{position:relative;z-index:2}
.cta h2{font-family:var(--serif);font-weight:800;font-size:clamp(24px,4vw,38px);line-height:1.5;margin-bottom:18px}
.cta p{color:rgba(255,255,255,.88);font-size:16px;max-width:580px;margin:0 auto 34px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .btn{display:inline-block;text-decoration:none;font-weight:700;font-size:16px;padding:17px 38px;border-radius:99px;transition:.3s}
.cta .btn-white{background:#fff;color:var(--navy)}
.cta .btn-white:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,0,0,.25)}
.cta .btn-line{border:1px solid rgba(255,255,255,.4);color:#fff}
.cta .btn-line:hover{background:rgba(255,255,255,.1)}
.cta .sub{margin-top:20px;font-size:14.5px;color:rgba(255,255,255,.8)}
/* === site footer (現行サイト準拠) === */
  .site-foot{background:#0e2236;color:rgba(255,255,255,.8);padding:60px 0 30px;position:relative;overflow:hidden;margin-top:0}
.contactus{background:#e8654f;border-radius:6px;padding:46px 54px;position:relative;overflow:hidden;margin-bottom:64px}

/* === 構築実績ギャラリー (works.html) === */
.wk-wrap{max-width:1120px;margin:0 auto;padding:56px 24px 8px}
.wk-lead{font-size:15.5px;line-height:1.95;color:var(--ink);max-width:820px;margin:0 0 28px}
.wk-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px}
.wk-nav a{font-size:14px;font-weight:700;color:var(--blue);background:var(--blue-pale);border:1px solid #d4e6f7;padding:8px 15px;border-radius:999px;text-decoration:none;transition:.2s}
.wk-nav a:hover{background:var(--blue);color:#fff}
.wk-sec{margin-bottom:52px;scroll-margin-top:90px}
.wk-h2{font-family:var(--serif);font-size:23px;color:var(--navy);font-weight:700;display:flex;align-items:baseline;gap:12px;margin:0 0 22px;padding-bottom:12px;border-bottom:2px solid var(--line)}
.wk-h2 span{font-family:var(--latin);font-size:14px;font-weight:600;color:var(--gray)}
.wk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(216px,1fr));gap:22px}
.wk-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;text-decoration:none;color:inherit;position:relative;transition:transform .22s,box-shadow .22s}
.wk-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(10,37,64,.13)}
.wk-thumb{height:188px;overflow:hidden;background:#eef3f8;border-bottom:1px solid var(--line)}
.wk-thumb img{width:100%;height:auto;display:block;object-fit:cover;object-position:top}
.wk-body{padding:14px 16px 16px}
.wk-cat{display:inline-block;font-size:12px;font-weight:700;color:var(--blue);background:var(--blue-pale);padding:3px 9px;border-radius:5px;margin-bottom:8px}
.wk-body h3{font-size:16px;line-height:1.5;color:var(--navy);font-weight:700;margin:0}
.wk-ext{display:block;padding:0 16px 14px;font-size:13px;font-weight:700;color:var(--orange);margin-top:auto}
.wk-nourl{cursor:default}
.wk-nourl:hover{transform:none;box-shadow:none}
.wk-cta{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;text-align:center;padding:64px 24px;margin-top:40px}
.wk-cta h2{font-family:var(--serif);font-size:27px;font-weight:700;margin:0 0 16px}
.wk-cta p{font-size:16px;line-height:1.9;max-width:680px;margin:0 auto 28px;color:rgba(255,255,255,.92)}
.wk-cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.wk-cta .btn-ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.wk-cta .btn-ghost:hover{background:rgba(255,255,255,.12)}
@media(max-width:680px){
 .wk-grid{grid-template-columns:repeat(2,1fr);gap:14px}
 .wk-thumb{height:150px}
 .wk-body h3{font-size:14.5px}
 .wk-h2{font-size:20px}
}

/* === 構築実績カード：成功事例リンク === */
.wk-links{padding:0 16px 14px;margin-top:auto;display:flex;flex-direction:column;gap:7px}
.wk-links .wk-ext{padding:0;margin:0}
.wk-success{font-size:13.5px;font-weight:700;color:#fff;background:var(--orange);border-radius:7px;padding:8px 12px;text-decoration:none;text-align:center;transition:opacity .2s}
.wk-success:hover{opacity:.9}