/* Iwalyze — 説明記事 */

.art{padding-top:clamp(108px,14vw,164px);padding-bottom:clamp(56px,8vw,100px)}
.art-wrap{max-width:840px;margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.art .crumb{font-size:11px;letter-spacing:.16em;color:var(--muted);margin-bottom:28px}
.art .crumb a{color:var(--muted)}
.art .crumb a:hover{color:var(--ink)}
.art .crumb span{margin:0 8px;opacity:.55}

.art-head{position:static;inset:auto;z-index:auto;background:none;box-shadow:none;
  border-bottom:1px solid rgba(27,25,24,.25);padding-bottom:clamp(24px,4vw,34px);margin-bottom:clamp(30px,5vw,48px)}
.art-cat{display:inline-block;font-size:11px;letter-spacing:.14em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:5px 16px;margin-bottom:20px}
.art-cat a{color:var(--muted)}
.art-cat a:hover{color:var(--ink)}
.art-head h1{font-family:var(--mincho);font-weight:600;font-size:clamp(23px,4vw,34px);line-height:1.6;letter-spacing:.045em}
.art-date{margin-top:18px;font-family:var(--serif);font-size:14px;letter-spacing:.12em;color:var(--muted)}

/* ---- 本文 ---- */
.art-body{font-size:14.5px;line-height:2.15;color:var(--ink-2);letter-spacing:.03em}
.art-body > *:first-child{margin-top:0}
.art-body p{margin:0 0 18px}
.art-body h2{
  font-family:var(--mincho);font-weight:600;color:var(--ink);
  font-size:clamp(19px,2.9vw,25px);letter-spacing:.06em;line-height:1.7;
  margin:clamp(46px,6vw,66px) 0 20px;padding-bottom:14px;
  border-bottom:1px solid rgba(27,25,24,.25);
}
.art-body h3{
  font-family:var(--mincho);font-weight:600;color:var(--ink);
  font-size:clamp(16.5px,2.4vw,20px);letter-spacing:.05em;line-height:1.7;
  margin:clamp(38px,5vw,52px) 0 16px;
}
.art-body h4{
  font-family:var(--sans);font-weight:700;color:var(--ink);
  font-size:15px;letter-spacing:.05em;line-height:1.8;margin:32px 0 14px;
}
.art-body h5{font-weight:700;color:var(--ink);font-size:14px;margin:26px 0 12px}

/* 旧サイトの見出しスタイルを引き継ぐ */
.art-body h2.s-leftline,.art-body h3.s-leftline,.art-body h4.s-leftline,
.art-body h2.s-leftline.light,.art-body h3.s-leftline.light,.art-body h4.s-leftline.light{
  border-bottom:none;border-left:3px solid var(--ink);padding:4px 0 4px 18px;
}
.art-body .s-leftline.light{border-left-color:rgba(27,25,24,.3)}
.art-body .s-bottomline{border-bottom:1px solid rgba(27,25,24,.25);padding-bottom:12px}
.art-body .s-doubleline{border-top:1px solid rgba(27,25,24,.25);border-bottom:1px solid rgba(27,25,24,.25);
  padding:14px 0;border-left:none}
.art-body .s-step{
  border-bottom:none;border-left:none;background:var(--dark);color:var(--white);
  border-radius:12px;padding:14px 22px;font-size:15.5px;letter-spacing:.06em;
}
.art-body .s-balloon{
  border:1px solid var(--line);background:#fff;border-radius:14px;padding:18px 22px;
  position:relative;border-left:none;border-bottom:none;font-size:14px;line-height:2;
}
.art-body .t-center{text-align:center}
.art-body .t-right{text-align:right}

.art-body ul,.art-body ol{margin:0 0 20px 1.5em}
.art-body li{margin-bottom:9px}
.art-body li::marker{color:var(--muted)}

.art-body strong{color:var(--ink);font-weight:700}
.art-body mark{background:rgba(246,200,80,.35);color:var(--ink);padding:1px 3px;border-radius:3px}
.art-body u{text-decoration-color:rgba(27,25,24,.4);text-underline-offset:3px}
.art-body code{font-family:Consolas,Menlo,monospace;font-size:12.5px;background:rgba(27,25,24,.07);
  border-radius:5px;padding:2px 7px;letter-spacing:0}
.art-body pre{background:var(--dark);color:#e8e6e2;border-radius:13px;padding:20px 24px;
  overflow-x:auto;margin:20px 0;font-family:Consolas,Menlo,monospace;font-size:12.5px;line-height:1.9;letter-spacing:0}
.art-body pre code{background:none;padding:0;color:inherit}
.art-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

.art-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:rgba(27,25,24,.3)}
.art-body a:hover{text-decoration-color:var(--ink)}
.art-body a.pill,.art-body a.pill.ghost{text-decoration:none;color:var(--ink);margin:6px 0}

.art-body blockquote{border-left:3px solid rgba(27,25,24,.25);background:rgba(27,25,24,.035);
  border-radius:0 12px 12px 0;padding:18px 24px;margin:22px 0;font-size:13.5px}
.art-body blockquote p:last-child{margin-bottom:0}

.art-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:13px}
.art-body th,.art-body td{text-align:left;padding:12px 14px;border:1px solid var(--line);
  vertical-align:top;line-height:1.9}
.art-body th{background:rgba(27,25,24,.04);font-weight:700;color:var(--ink)}

.a-fig{margin:26px 0}
.a-fig img{width:100%;height:auto;display:block;border-radius:12px;border:1px solid var(--line);
  box-shadow:0 8px 26px rgba(20,18,16,.1)}
.a-fig figcaption{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.9;text-align:center}

.a-movie{position:relative;padding-top:56.25%;border-radius:14px;overflow:hidden;margin:26px 0;
  box-shadow:0 12px 36px rgba(20,18,16,.18);background:#000}
.a-movie iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* ---- 前後の記事 ---- */
.art-nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;
  margin-top:clamp(46px,7vw,72px);padding-top:30px;border-top:1px solid rgba(27,25,24,.25)}
.pn{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;
  font-size:13.5px;line-height:1.8;color:var(--ink);transition:.3s}
.pn:hover{border-color:rgba(27,25,24,.3);transform:translateY(-2px)}
.pn span{display:block;font-size:10.5px;letter-spacing:.14em;color:var(--muted);margin-bottom:7px}
.pn.next{text-align:right}

/* ---- 一覧ページ ---- */
.gsec{padding:clamp(30px,4.5vw,52px) 0;border-bottom:1px solid var(--line)}
.gsec:last-child{border-bottom:none}
.gsec-h{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:22px}
.gsec-h h2{font-family:var(--mincho);font-weight:600;font-size:clamp(18px,2.7vw,23px);letter-spacing:.06em}
.gcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}
.gcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  display:flex;flex-direction:column;gap:10px;transition:.3s}
.gcard:hover{border-color:rgba(27,25,24,.3);transform:translateY(-3px);box-shadow:0 8px 22px rgba(20,18,16,.08)}
.gcard b{font-family:var(--mincho);font-size:14.5px;font-weight:600;letter-spacing:.04em;line-height:1.75;color:var(--ink)}
.gcard span{font-family:var(--serif);font-size:12.5px;letter-spacing:.1em;color:var(--muted);margin-top:auto}

@media(max-width:640px){
  .pn.next{text-align:left}
  .art-body{font-size:14px}
}