/* JumpStack コラム 共通スタイル（コーポレートLPダーク基調に統一） */
:root{
  --bg:#070b16; --bg-2:#0a1122; --surface:#0e1730; --surface-2:#121d3a;
  --line:rgba(130,165,255,.16); --line-2:rgba(130,165,255,.30);
  --txt:#e9eefb; --muted:#94a2c6; --dim:#5f6d92;
  --blue:#4da3ff; --cyan:#38d4ff; --mint:#3cf0ac;
  --grad:linear-gradient(115deg,#4da3ff 0%,#38d4ff 100%);
  --grad-hot:linear-gradient(115deg,#4da3ff,#38d4ff 55%,#3cf0ac);
  --radius:16px;
  --glow:0 0 0 1px rgba(77,163,255,.25),0 14px 50px -12px rgba(56,150,255,.35);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --disp:"Space Grotesk","Noto Sans JP",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--txt);background:var(--bg);line-height:1.9;-webkit-font-smoothing:antialiased}
::selection{background:rgba(77,163,255,.4)}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:min(1140px,92%);margin-inline:auto}

/* 背景レイヤー */
.bg-grid{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(130,165,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(130,165,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 0%,transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 0%,transparent 78%)}
.bg-glow{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(900px 520px at 82% -10%,rgba(56,120,255,.16),transparent 60%),
             radial-gradient(700px 480px at 8% 6%,rgba(56,212,255,.08),transparent 60%)}
main,header,footer{position:relative;z-index:1}

/* ヘッダー */
header{position:sticky;top:0;z-index:50;background:rgba(7,11,22,.72);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:12px}
.logo-badge{display:inline-grid;place-items:center;background:#fff;border-radius:10px;padding:4px;box-shadow:0 4px 18px rgba(0,0,0,.4)}
.logo-badge img{height:32px;width:32px;display:block;border-radius:7px}
.logo-type{font-family:var(--disp);font-weight:700;font-size:1.28rem;letter-spacing:.01em;color:var(--txt);line-height:1.1}
.logo-type .tg{display:block;font-family:var(--mono);font-weight:400;font-size:.56rem;letter-spacing:.14em;color:var(--dim);margin-top:3px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--muted);transition:color .2s}
.nav-links a:hover{color:var(--txt)}
.btn{display:inline-block;white-space:nowrap;padding:11px 24px;border-radius:10px;font-weight:700;font-size:.9rem;transition:transform .2s,box-shadow .2s,border-color .2s,color .2s;letter-spacing:.02em}
.btn-primary{background:var(--grad);color:#04101f;box-shadow:0 8px 30px -6px rgba(56,150,255,.55)}
.btn-primary:hover{transform:translateY(-2px)}
.nav-links a.btn-primary{color:#04101f}
@media(max-width:640px){.nav-links .hide-sm{display:none}.logo-type{font-size:1.1rem}}

/* 記事ヒーロー */
.post-hero{padding:60px 0 34px;border-bottom:1px solid var(--line)}
.crumbs{font-size:.82rem;color:var(--dim);margin-bottom:18px}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--txt)}
.eyebrow{font-family:var(--mono);font-weight:700;letter-spacing:.16em;color:var(--cyan);font-size:.74rem;text-transform:uppercase}
.post-hero h1{font-family:var(--disp);font-size:clamp(1.6rem,4.4vw,2.5rem);font-weight:700;line-height:1.35;margin:14px 0 16px;letter-spacing:.01em}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;color:var(--dim);font-size:.84rem}
.post-meta .kw{display:inline-block;padding:4px 11px;border:1px solid var(--line-2);border-radius:999px;color:var(--muted);font-size:.76rem}

/* 記事本文 */
article.post{padding:44px 0 24px}
article.post .body{width:min(760px,92%);margin-inline:auto}
article.post .lead{font-size:1.06rem;color:var(--txt);opacity:.96;margin-bottom:30px;line-height:1.95}
article.post h2{font-family:var(--disp);font-size:1.3rem;font-weight:700;margin:42px 0 16px;padding-left:15px;border-left:3px solid;border-image:var(--grad-hot) 1;line-height:1.5}
article.post p{color:#cdd6ee;margin-bottom:18px;line-height:1.95}
article.post strong{color:var(--txt);font-weight:700}
article.post em{font-style:normal;color:var(--cyan)}

/* 記事末CTA */
.post-cta{width:min(760px,92%);margin:38px auto 0;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius);padding:30px 28px;box-shadow:var(--glow)}
.post-cta h3{font-family:var(--disp);font-size:1.16rem;font-weight:700;margin-bottom:10px}
.post-cta p{color:var(--muted);font-size:.94rem;margin-bottom:18px;line-height:1.85}
.post-cta .btn{padding:13px 30px}

/* 関連記事 */
.related{width:min(760px,92%);margin:46px auto 0}
.related h4{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:14px}
.related a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:.92rem;margin-bottom:10px;transition:border-color .2s,color .2s,transform .2s}
.related a:hover{border-color:var(--line-2);color:var(--txt);transform:translateX(3px)}
.related a b{color:var(--txt);font-weight:700}

/* 一覧ページ */
.list-hero{padding:66px 0 30px;border-bottom:1px solid var(--line)}
.list-hero .eyebrow{font-size:.8rem}
.list-hero h1{font-family:var(--disp);font-size:clamp(1.8rem,5vw,2.7rem);font-weight:700;margin:12px 0 12px}
.list-hero p{color:var(--muted);max-width:640px}
.cards{padding:44px 0 20px;display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:760px){.cards{grid-template-columns:1fr}}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:border-color .2s,transform .2s,box-shadow .2s}
.card:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 18px 46px -20px rgba(56,150,255,.5)}
.card .num{font-family:var(--mono);font-size:.72rem;color:var(--cyan);letter-spacing:.12em}
.card h2{font-family:var(--disp);font-size:1.16rem;font-weight:700;line-height:1.5;margin:10px 0 12px}
.card p{color:var(--muted);font-size:.9rem;line-height:1.8;margin-bottom:14px}
.card .kw{display:inline-block;padding:3px 10px;border:1px solid var(--line-2);border-radius:999px;color:var(--dim);font-size:.72rem;margin-right:6px}
.card .go{display:inline-block;margin-top:6px;color:var(--blue);font-size:.86rem;font-weight:700}

/* フッター */
footer{border-top:1px solid var(--line);margin-top:56px;padding:40px 0 34px}
.foot-top{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.foot-links a{color:var(--muted);font-size:.88rem}.foot-links a:hover{color:var(--txt)}
.copy{color:var(--dim);font-size:.8rem;margin-top:20px}