/* ============================================================
   コラムページ共通スタイル（column.html / column/volXX.html）
   トップ(index.html)のデザイントークンを踏襲。
   ============================================================ */
:root{
  --orange:#ff7300;
  --orange-d:#e85d00;
  --cyan:#00b4e6;
  --cyan-d:#0091bd;
  --pink:#ff4f8b;
  --yellow:#ffc01e;
  --green:#3fc36b;
  --ink:#222127;
  --ink-2:#55545d;
  --ink-3:#8b8a93;
  --line:#e9ecf1;
  --bg:#eef3f8;
  --card:#ffffff;
  --font:"Zen Maru Gothic",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:var(--font);color:var(--ink);line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background:
    radial-gradient(900px 460px at 88% -8%, #fff 0%, rgba(255,255,255,0) 60%),
    radial-gradient(700px 400px at 6% 4%, #fff7ef 0%, rgba(255,247,239,0) 55%),
    var(--bg);
}
a{color:inherit;text-decoration:none;}
img,svg{display:block;}
.container{max-width:1140px;margin:0 auto;padding:0 24px;}

/* ---------- danmaku ---------- */
#danmaku{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.cmt{position:absolute;left:100%;white-space:nowrap;font-family:var(--font);font-weight:800;letter-spacing:.02em;will-change:transform;
  filter:blur(.7px);text-shadow:0 0 6px #fff,0 0 6px #fff;}
.wrap{position:relative;z-index:1;}
.solid{background:var(--card);position:relative;}

/* ---------- top fan bar ---------- */
.gbar{background:#15151a;color:#fff;}
.gbar .container{display:flex;align-items:center;gap:16px;height:42px;font-size:12.5px;}
.gbar .gb-brand{display:flex;align-items:center;gap:9px;font-weight:800;color:#e7e6ee;}
.gbar .gb-brand .unof{background:var(--pink);color:#fff;font-weight:900;font-size:10px;letter-spacing:.1em;padding:3px 8px;border-radius:6px;}
.gbar .gb-right{margin-left:auto;display:flex;gap:12px;align-items:center;}
.gbar .gb-right a{color:#cdccd6;font-weight:700;}
.gbar .gb-right a:hover{color:#fff;}

/* ---------- sub header ---------- */
header.sub{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:2px solid var(--line);}
header.sub .container{display:flex;align-items:center;gap:28px;height:74px;}
.logo{display:flex;align-items:center;}
.logo img{height:44px;width:auto;display:block;}
.logo h1{margin:0;}
@media(max-width:520px){.logo img{height:34px;}}
nav.mn{display:flex;gap:22px;font-weight:800;font-size:14.5px;color:var(--ink-2);}
nav.mn a{padding:6px 2px;border-bottom:3px solid transparent;white-space:nowrap;}
nav.mn a:hover,nav.mn a.active{color:var(--ink);border-color:var(--orange);}
.h-cta{margin-left:auto;display:inline-flex;align-items:center;gap:8px;background:var(--orange);color:#fff;font-weight:900;font-size:14px;border-radius:12px;padding:11px 20px;box-shadow:0 4px 0 var(--orange-d);white-space:nowrap;}
.h-cta:active{transform:translateY(3px);box-shadow:0 1px 0 var(--orange-d);}
@media(max-width:1080px){nav.mn{display:none;}}

/* ---------- section ---------- */
section{position:relative;}
.pad{padding:76px 0;}
.shead{text-align:center;margin-bottom:46px;}
.shead .en{font-size:13px;font-weight:900;letter-spacing:.28em;color:var(--orange);}
.shead h2{font-size:34px;font-weight:900;margin:8px 0 0;letter-spacing:.04em;}
.shead h2 .u{background:linear-gradient(transparent 62%,var(--yellow) 62%);padding:0 4px;}
.shead .lead{color:var(--ink-2);font-size:15px;margin:12px 0 0;}

/* ---------- breadcrumb ---------- */
.col-hero{padding:56px 0 0;text-align:center;}
.col-hero .crumb{font-size:13px;font-weight:700;color:var(--ink-3);}
.col-hero .crumb a{color:var(--cyan-d);}
.col-hero .crumb a:hover{text-decoration:underline;}

/* ---------- column list (column.html) ---------- */
.col-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:980px;margin:0 auto;}
.col-card{background:#fff;border:2.5px solid var(--line);border-radius:20px;padding:26px;display:flex;flex-direction:column;gap:8px;transition:.16s;}
.col-card:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:0 10px 0 rgba(232,93,0,.1);}
.col-card .cc-top{display:flex;align-items:center;gap:10px;}
.col-card .cc-vol{font-weight:900;font-size:12px;color:var(--ink-3);letter-spacing:.08em;}
.col-card h3{margin:0;font-size:19px;font-weight:900;line-height:1.5;}
.col-card .cc-meta{font-size:12.5px;color:var(--ink-3);font-weight:700;}
.col-card .cc-ex{margin:0;font-size:13.5px;color:var(--ink-2);}
.col-card .cc-more{margin-top:auto;padding-top:8px;font-weight:900;font-size:13.5px;color:var(--orange);}
@media(max-width:720px){.col-list{grid-template-columns:1fr;}}

/* coming soon card */
.soon{max-width:980px;margin:34px auto 0;border:2.5px dashed var(--ink-3);border-radius:22px;padding:36px;text-align:center;color:var(--ink-3);background:rgba(255,255,255,.6);}
.soon b{font-weight:900;font-size:18px;display:block;margin-bottom:6px;}
.soon p{margin:0;font-size:14px;}

/* ---------- article (column/volXX.html) ---------- */
.article{max-width:820px;margin:0 auto;background:#fff;border:2.5px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 10px 30px -20px rgba(20,40,70,.25);}
.art-head{padding:30px 34px 0;}
.art-cat{display:inline-block;background:var(--orange);color:#fff;font-weight:900;font-size:12px;border-radius:8px;padding:3px 14px;}
.art-cat.c-cyan{background:var(--cyan);}
.art-cat.c-pink{background:var(--pink);}
.art-cat.c-green{background:var(--green);}
.art-head h3{margin:14px 0 6px;font-size:26px;font-weight:900;line-height:1.4;}
.art-meta{font-size:13px;color:var(--ink-3);font-weight:700;}
.art-body{padding:20px 34px 34px;}
.art-body p{margin:0 0 16px;color:#3a3942;font-size:15px;}
.art-body .em{color:var(--orange);font-weight:900;}
.art-body h4{margin:28px 0 12px;font-size:19px;font-weight:900;border-left:5px solid var(--orange);padding-left:12px;line-height:1.5;}
.art-body ul,.art-body ol{margin:0 0 16px;padding-left:24px;color:#3a3942;font-size:15px;}
.art-body img{max-width:100%;height:auto;border-radius:14px;border:2px solid var(--line);margin:0 0 16px;}
.art-body blockquote{margin:0 0 16px;padding:14px 18px;background:#fafbfd;border-left:5px solid var(--cyan);border-radius:0 12px 12px 0;color:var(--ink-2);font-size:14.5px;}
.art-body s{color:var(--ink-3);text-decoration-thickness:1.5px;}
@media(max-width:600px){.art-head{padding:24px 20px 0;}.art-body{padding:16px 20px 26px;}.art-head h3{font-size:21px;}}

/* member cards */
.members{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0 6px;}
.member{display:flex;gap:16px;align-items:flex-start;background:#fafbfd;border:2px solid var(--line);border-radius:16px;padding:18px;}
.member .av{flex:none;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;font-weight:900;font-size:22px;color:#fff;}
.member:nth-child(4n+1) .av{background:var(--orange);}
.member:nth-child(4n+2) .av{background:var(--cyan);}
.member:nth-child(4n+3) .av{background:var(--pink);}
.member:nth-child(4n+4) .av{background:var(--green);}
.member .mi b{font-weight:900;font-size:16px;display:block;}
.member .mi .role{display:inline-block;font-size:11px;font-weight:900;color:var(--cyan-d);background:#f0fbff;border:1.5px dashed var(--cyan);border-radius:8px;padding:1px 10px;margin:4px 0 6px;}
.member .mi p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.7;}
/* .av にアイコン画像を入れる場合は class="av ic" にして <img> を1枚だけ置く。
   nth-child の4色循環がそのまま外周リングになる。 */
.member .av.ic{padding:3px;overflow:hidden;}
.member .av.ic img{width:100%;height:100%;border-radius:50%;object-fit:cover;background:#fff;}
/* X（旧Twitter）リンク */
.member .mi .x{display:inline-flex;align-items:center;gap:5px;margin-top:9px;padding:2px 11px;
  border:1.5px solid var(--line);border-radius:999px;background:#fff;
  font-size:11.5px;font-weight:900;color:var(--ink-3);transition:.15s;}
.member .mi .x svg{width:10px;height:10px;fill:currentColor;}
.member .mi .x:hover{color:#fff;background:#111;border-color:#111;}
@media(max-width:680px){.members{grid-template-columns:1fr;}}

/* article prev/next nav */
.art-nav{max-width:820px;margin:34px auto 0;display:flex;justify-content:space-between;gap:14px;font-weight:900;font-size:14px;}
.art-nav a{background:#fff;border:2.5px solid var(--line);border-radius:14px;padding:13px 20px;transition:.16s;}
.art-nav a:hover{border-color:var(--orange);color:var(--orange);}
.art-nav .disabled{opacity:.4;pointer-events:none;}

.backlink{text-align:center;margin-top:46px;}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--font);font-weight:900;font-size:16px;border-radius:14px;padding:15px 28px;cursor:pointer;border:none;transition:transform .07s;}
.btn:active{transform:translateY(3px);}
.btn-w{background:#fff;color:var(--ink);border:2.5px solid var(--ink);box-shadow:0 5px 0 rgba(0,0,0,.12);}
.btn-w:active{box-shadow:0 2px 0 rgba(0,0,0,.12);}

/* ---------- footer ---------- */
footer{background:#15151a;color:#c7c6d1;padding:56px 0 26px;}
footer .fg{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1);}
footer .fb b{font-weight:900;font-size:18px;color:#fff;}
footer .fb p{font-size:13px;color:#9594a0;margin:10px 0 0;max-width:22em;}
footer .sns{display:flex;gap:10px;margin-top:16px;}
footer .sns a{width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.08);display:grid;place-items:center;}
footer .sns a:hover{background:var(--orange);}
footer h5{font-size:13px;font-weight:900;color:#fff;margin:0 0 14px;}
footer .lk{display:grid;gap:10px;}
footer a{font-size:13.5px;color:#b3b2bd;}
footer a:hover{color:#fff;}
footer .bar{padding-top:20px;font-size:12px;color:#76757f;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
@media(max-width:820px){footer .fg{grid-template-columns:1fr 1fr;}}

/* ---------- danmaku toggle ---------- */
.dm{position:fixed;right:20px;bottom:20px;z-index:90;background:#15151a;color:#fff;border:none;border-radius:999px;padding:13px 20px;font-family:var(--font);font-weight:900;font-size:14px;cursor:pointer;box-shadow:0 10px 26px -8px rgba(0,0,0,.5);display:flex;align-items:center;gap:9px;}
.dm .led{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);}
.dm .dm-ic{width:22px;height:22px;filter:brightness(0) invert(1);}
.dm.off .led{background:#666;box-shadow:none;}