/* Office N Media — self-contained design system (no CDN) v1.0 2026-07-03 */
:root{
  --bg:#f6f8fb; --surface:#ffffff; --ink:#182230; --navy:#1b2a4a; --accent:#2f6bff;
  --accent-soft:#eaf1ff; --gold:#c9a04e; --muted:#5f6f80; --line:#e3e9f0;
  --radius:18px; --shadow:0 6px 24px rgba(23,42,80,.08); --shadow-lg:0 14px 40px rgba(23,42,80,.14);
  --font:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic Medium","Noto Sans JP",system-ui,sans-serif;
  --serif:"Hiragino Mincho ProN","Yu Mincho",Georgia,serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:780px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;max-width:1120px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;color:var(--navy)}
.brand img.mark{height:38px;width:auto}
.brand .name{font-family:var(--serif);font-weight:700;font-size:22px;letter-spacing:.06em}
.brand .tagline{display:block;font-size:9.5px;letter-spacing:.14em;color:var(--navy);font-weight:500}
.brand .tagline em{font-style:normal;color:var(--gold);margin:0 4px}
.brand-right{text-align:right}
.brand-right img{height:34px;width:auto;margin-left:auto}
.brand-right span{display:block;font-size:8.5px;letter-spacing:.18em;color:var(--muted);margin-top:3px;white-space:nowrap}
@media(max-width:560px){.brand .name{font-size:18px}.brand img.mark{height:32px}.brand-right img{height:26px}.brand .tagline{display:none}.brand-right span{letter-spacing:.08em}}

/* Hero (hub) */
.media-hero{background:linear-gradient(135deg,var(--navy) 0%,#243b6b 55%,#2f6bff 130%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.media-hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 65%)}
.media-hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.22em;color:#cfe0ff;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 16px;margin-bottom:18px}
.media-hero h1{font-family:var(--serif);font-size:clamp(26px,4.6vw,42px);font-weight:700;letter-spacing:.04em;line-height:1.4}
.media-hero p.lead{margin-top:14px;color:#dbe6ff;font-size:15px;max-width:640px}
.media-hero .gold{color:var(--gold)}

/* Category chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 6px}
.chip{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:7px 18px;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;transition:.2s}
.chip:hover,.chip.active{background:var(--navy);color:#fff;border-color:var(--navy)}

/* Cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:26px;margin:26px 0 70px}
.card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;position:relative}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:#dfe7f2}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.badge{background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:11px;padding:3px 12px;border-radius:999px;letter-spacing:.04em}
.card h2{font-size:17.5px;line-height:1.55;font-weight:700;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p.excerpt{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .more{margin-top:auto;font-size:13px;font-weight:700;color:var(--accent)}
.card a.cover,.featured a.cover{position:absolute;inset:0;z-index:5}
.card{position:relative}

/* Featured */
.featured{display:grid;grid-template-columns:1.2fr 1fr;gap:0;background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);margin-top:34px;position:relative}
.featured .thumb{min-height:280px;background:#dfe7f2}
.featured .thumb img{width:100%;height:100%;object-fit:cover}
.featured .body{padding:34px 36px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.featured h2{font-size:clamp(19px,2.4vw,25px);line-height:1.55;font-weight:700}
.featured p{color:var(--muted);font-size:14.5px}
@media(max-width:820px){.featured{grid-template-columns:1fr}}

/* Article page */
.article-hero{max-width:900px;margin:36px auto 0;padding:0 20px}
.article-hero img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%}
.article-head{max-width:780px;margin:30px auto 6px;padding:0 20px}
.article-head h1{font-size:clamp(24px,3.6vw,34px);line-height:1.5;font-weight:800;color:var(--ink);letter-spacing:.01em}
.article-body{max-width:780px;margin:10px auto 0;padding:0 20px 30px}
.article-body p{margin:1.1em 0}
.article-body h2{font-size:21px;font-weight:800;margin:2.2em 0 .8em;padding-left:14px;border-left:5px solid var(--accent);line-height:1.5}
.article-body h3{font-size:17.5px;font-weight:700;margin:1.8em 0 .6em;color:var(--navy)}
.article-body ul,.article-body ol{padding-left:1.5em;margin:1em 0}
.article-body li{margin:.45em 0}
.article-body img{border-radius:14px;box-shadow:var(--shadow);margin:1.6em auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:8px}
.article-body strong{color:var(--navy)}
.article-body .ql-align-center{text-align:center}
.article-body iframe.ql-video{width:100%;aspect-ratio:16/9;border:0;border-radius:14px}
.lead-box{background:var(--accent-soft);border:1px solid #d5e4ff;border-radius:var(--radius);padding:22px 26px;margin:26px 0}
.lead-box .t{font-weight:800;color:var(--navy);margin-bottom:8px;font-size:15px}
.lead-box ul{padding-left:1.4em;font-size:14.5px}
.divider{height:1px;background:var(--line);margin:40px auto;max-width:780px}

/* CTA */
.cta-panel{background:linear-gradient(135deg,var(--navy),#2c4a8f);color:#fff;border-radius:var(--radius);padding:36px 30px;text-align:center;margin:44px 0;box-shadow:var(--shadow-lg)}
.cta-panel .t{font-size:19px;font-weight:800}
.cta-panel .s{color:#c9d8f6;font-size:13.5px;margin-top:6px}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.btn{display:inline-block;padding:13px 30px;border-radius:12px;font-weight:800;font-size:14.5px;transition:.2s}
.btn-gold{background:var(--gold);color:#1c2333}
.btn-gold:hover{filter:brightness(1.08)}
.btn-ghost{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* Footer */
.site-footer{background:var(--navy);color:#c9d5ea;margin-top:60px}
.site-footer .inner{max-width:1120px;margin:0 auto;padding:44px 20px 30px}
.site-footer .brandline{display:flex;align-items:center;gap:12px;color:#fff}
.site-footer .brandline img{height:30px;filter:brightness(0) invert(1)}
.site-footer .name{font-family:var(--serif);font-size:19px;letter-spacing:.06em}
.site-footer p{font-size:13px;margin-top:14px;line-height:2}
.site-footer a{color:#9fc0ff}
.site-footer .copy{border-top:1px solid rgba(255,255,255,.15);margin-top:26px;padding-top:16px;font-size:11.5px;color:#8ea2c4;text-align:center}
.backlink{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;margin:26px 0}