/* =========================================================
   株式会社アテナ コーポレートサイト 共通スタイル
   エンターテイメント業界をなめらかに
   ========================================================= */
:root{
  --ink:#16181f;
  --ink-soft:#4a4f5c;
  --muted:#7b8194;
  --line:#e7e8ee;
  --bg:#ffffff;
  --bg-soft:#f6f7fb;
  --bg-ink:#10121a;
  --accent:#4f5bd5;
  --accent-2:#16c4a6;
  --accent-ink:#3a44b0;
  --radius:14px;
  --radius-lg:22px;
  --maxw:1120px;
  --shadow:0 10px 40px rgba(20,24,45,.08);
  --shadow-sm:0 4px 18px rgba(20,24,45,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Helvetica Neue","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.85;
  -webkit-font-smoothing:antialiased;font-feature-settings:"palt";
}
a{color:inherit;text-decoration:none;transition:.2s}
img{max-width:100%;height:auto;display:block}
code{overflow-wrap:anywhere;word-break:break-word}
.prose table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.accent{color:var(--accent)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);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:11px;font-weight:700;letter-spacing:.02em}
.logo .mark{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:800;font-size:17px}
.logo .name{font-size:17px}
.logo .name small{display:block;font-size:10.5px;letter-spacing:.18em;color:var(--muted);font-weight:600}
.menu{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:600}
.menu a{color:var(--ink-soft)}
.menu a:hover{color:var(--accent)}
.menu .btn-nav{background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px}
.menu .btn-nav:hover{background:var(--accent)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;font-size:24px;color:var(--ink)}
@media(max-width:860px){
  .menu{position:fixed;inset:70px 0 auto 0;flex-direction:column;gap:0;background:#fff;
    border-bottom:1px solid var(--line);padding:8px 0;display:none;box-shadow:var(--shadow)}
  .menu.open{display:flex}
  .menu a{width:100%;padding:14px 24px;border-top:1px solid var(--line)}
  .menu .btn-nav{margin:12px 24px;text-align:center}
  .nav-toggle{display:block}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg-soft)}
.hero::after{content:"";position:absolute;right:-180px;top:-180px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(79,91,213,.18),transparent 60%);pointer-events:none}
.hero::before{content:"";position:absolute;left:-160px;bottom:-220px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(22,196,166,.16),transparent 60%);pointer-events:none}
.hero-inner{position:relative;z-index:2;padding:96px 0 104px;max-width:760px}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.22em;font-weight:700;color:var(--accent-ink);
  background:#fff;border:1px solid var(--line);padding:7px 16px;border-radius:999px;margin-bottom:26px}
.hero h1{font-size:clamp(32px,5.4vw,58px);line-height:1.28;font-weight:800;letter-spacing:.01em}
.hero h1 .grad{background:linear-gradient(120deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:26px;font-size:clamp(15px,1.9vw,18px);color:var(--ink-soft);max-width:600px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;
  padding:14px 28px;border-radius:999px;transition:.22s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-ink);transform:translateY(-2px);box-shadow:0 12px 26px rgba(79,91,213,.28)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--accent)}

/* ---------- Sections ---------- */
section{padding:88px 0}
.section-head{max-width:680px;margin-bottom:52px}
.section-head .label{font-size:12.5px;letter-spacing:.22em;font-weight:700;color:var(--accent);display:block;margin-bottom:12px}
.section-head h2{font-size:clamp(25px,3.4vw,38px);font-weight:800;line-height:1.35}
.section-head p{margin-top:16px;color:var(--ink-soft)}
.bg-soft{background:var(--bg-soft)}

/* ---------- Page header (下層) ---------- */
.page-hero{background:var(--bg-ink);color:#fff;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(79,91,213,.4),transparent 62%)}
.page-hero .wrap{position:relative;z-index:2;padding:74px 24px 66px}
.breadcrumb{font-size:12.5px;color:rgba(255,255,255,.6);margin-bottom:14px;letter-spacing:.04em}
.breadcrumb a:hover{color:#fff}
.page-hero h1{font-size:clamp(28px,4.4vw,44px);font-weight:800}
.page-hero .en{display:block;font-size:13px;letter-spacing:.28em;color:var(--accent-2);font-weight:700;margin-top:10px}

/* ---------- Feature grid ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.grid-3,.grid-2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 30px;
  box-shadow:var(--shadow-sm);transition:.25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d8dbe8}
.card .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(135deg,rgba(79,91,213,.12),rgba(22,196,166,.12));color:var(--accent);font-size:24px}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:14.5px}
.card ul{list-style:none;margin-top:14px;font-size:14px;color:var(--ink-soft)}
.card ul li{padding-left:22px;position:relative;margin-top:8px}
.card ul li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-2)}

/* ---------- Product blocks ---------- */
.prod{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;margin-bottom:64px}
.prod:nth-child(even) .prod-media{order:2}
.prod-media{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);
  aspect-ratio:16/10;display:grid;place-items:center;color:var(--muted);overflow:hidden}
.prod-media .ph{font-size:54px;color:#c7cbdb}
.prod h3{font-size:23px;font-weight:800;margin-bottom:8px}
.prod .tag{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:700;display:block;margin-bottom:12px}
.prod p{color:var(--ink-soft);margin-top:12px;font-size:15px}
@media(max-width:860px){.prod{grid-template-columns:1fr;gap:22px}.prod:nth-child(even) .prod-media{order:0}}

/* ---------- Info table ---------- */
.info-table{width:100%;border-collapse:collapse;border-top:1px solid var(--line)}
.info-table th,.info-table td{text-align:left;padding:18px 8px;border-bottom:1px solid var(--line);
  font-size:14.5px;vertical-align:top}
.info-table th{width:34%;font-weight:700;color:var(--ink);background:none}
.info-table td{color:var(--ink-soft)}
@media(max-width:680px){
  .info-table,.info-table tbody,.info-table tr,.info-table th,.info-table td{display:block;width:100%}
  .info-table th{border-bottom:0;padding-bottom:0}
  .info-table td{padding-top:6px}
}

/* ---------- News ---------- */
.news-list{display:grid;gap:2px;border-top:1px solid var(--line)}
.news-item{display:flex;align-items:center;gap:20px;padding:22px 6px;border-bottom:1px solid var(--line);transition:.2s}
.news-item:hover{background:var(--bg-soft)}
.news-item .date{font-size:13px;color:var(--muted);font-weight:600;min-width:96px}
.news-item .cat{font-size:11.5px;font-weight:700;color:var(--accent);border:1px solid var(--line);
  padding:3px 11px;border-radius:999px;white-space:nowrap}
.news-item .ttl{font-size:15px;font-weight:600;flex:1}
.news-item:hover .ttl{color:var(--accent)}
@media(max-width:680px){.news-item{flex-wrap:wrap;gap:8px 14px}.news-item .ttl{flex-basis:100%}}

/* ---------- Prose (privacy etc.) ---------- */
.prose{max-width:820px}
.prose h2{font-size:19px;font-weight:800;margin:38px 0 12px;padding-top:8px}
.prose p{color:var(--ink-soft);margin-bottom:14px}
.prose ol,.prose ul{color:var(--ink-soft);margin:0 0 14px 1.3em}
.prose li{margin-bottom:7px}
.lead-note{color:var(--ink-soft);margin-bottom:8px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.contact-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px}
.contact-card h3{font-size:16px;margin-bottom:6px}
.contact-card .big{font-size:26px;font-weight:800;letter-spacing:.02em;margin:4px 0}
.contact-card .sub{font-size:13px;color:var(--muted)}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px}
.form-row input,.form-row textarea{width:100%;border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;font:inherit;font-size:15px;background:#fff;transition:.2s}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(79,91,213,.14)}
.form-note{font-size:12.5px;color:var(--muted);margin-top:10px}

/* ---------- Map ---------- */
.map-embed{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;line-height:0}
.map-embed iframe{width:100%;height:440px;border:0}
@media(max-width:680px){.map-embed iframe{height:320px}}

/* ---------- CTA band ---------- */
.cta-band{background:var(--bg-ink);color:#fff;border-radius:var(--radius-lg);padding:56px 44px;text-align:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-100px;top:-100px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(22,196,166,.34),transparent 62%)}
.cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:800;position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.72);margin-top:14px;position:relative;z-index:2}
.cta-band .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px;position:relative;z-index:2}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-ink);color:rgba(255,255,255,.74);padding:64px 0 30px;font-size:14px}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand .logo .name{color:#fff}
.foot-brand p{margin-top:18px;line-height:1.9;color:rgba(255,255,255,.62)}
.foot-links{display:flex;gap:56px;flex-wrap:wrap}
.foot-col h4{font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.5);margin-bottom:16px;font-weight:700}
.foot-col a{display:block;margin-bottom:11px;color:rgba(255,255,255,.78)}
.foot-col a:hover{color:#fff}
.foot-bottom{padding-top:24px;font-size:12.5px;color:rgba(255,255,255,.5);text-align:center}

/* ---------- Reveal ---------- */
.reveal{transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal-init .reveal{opacity:0;transform:translateY(24px)}
.reveal.in{opacity:1;transform:none}
@media print{.reveal,.reveal-init .reveal{opacity:1 !important;transform:none !important}}