/* 技術だより「肆」の拵え(2026-10-26 代表採用): 縦書きの題字を右に立て、本文は左に横書き。
   道場カード(.dj-card)は扁額に仕立て、画面に入ったとき一度だけ扉が開く(shi.js が .open を付ける)。
   記事側は .pgh と main.art を <div class="shi"> で包み、副題を <span class="sub"> にするだけ。
   記事内の<style>より後に読み込むこと(</head>の直前)。 */

.shi{display:flex;flex-direction:row-reverse;align-items:flex-start;gap:56px;max-width:1240px;margin:0 auto;padding:48px 40px 0;box-sizing:border-box}

/* 題字の柱(右) */
.shi .pgh{flex:0 0 auto;max-width:none;margin:0;padding:0 0 0 36px;border-left:1px solid #3b3530;display:flex;flex-direction:row-reverse;align-items:flex-start;gap:20px;position:sticky;top:24px}
.shi .pgh h1.ttl{order:1;writing-mode:vertical-rl;font-family:'Shippori Mincho',serif;font-weight:800;font-size:44px;line-height:1.5;letter-spacing:.14em;margin:0;max-height:min(80vh,780px);color:#f2efe9}
.shi .pgh h1.ttl .sub{display:inline-block;margin-top:2.6em;font-size:.55em;font-weight:600;letter-spacing:.2em;color:#d9b36c}
.shi .pgh .meta{order:2;writing-mode:vertical-rl;margin-top:9em;gap:14px;font-size:14px;letter-spacing:.3em;color:#f2efe9}
.shi .pgh .meta .tag{padding:12px 3px;letter-spacing:.24em}
.shi .pgh .crumb{order:3;writing-mode:vertical-rl;margin:9em 0 0;font-size:13px;letter-spacing:.24em}
.shi .pgh .rule{display:none}

/* 本文(左) */
.shi main.art{flex:1 1 auto;min-width:0;max-width:none;margin:0;padding:0 0 70px;counter-reset:shi}
.shi .art h2{font-family:'Shippori Mincho',serif;font-weight:800;font-size:26px;letter-spacing:.12em;border-left:none;padding-left:0;margin:50px 0 18px}
.shi .art h2::before{counter-increment:shi;content:"其の" counter(shi,cjk-decimal);font-size:15px;font-weight:600;letter-spacing:.2em;color:#d9b36c;margin-right:14px;vertical-align:.18em}

/* 道場カード = 扁額 */
.shi .dj-card{position:relative;overflow:hidden;flex-direction:column;flex-wrap:nowrap;align-items:center;justify-content:center;gap:10px;text-align:center;padding:28px 32px 24px;background:#1d1814;border:3px solid #d9b36c;border-radius:0;box-shadow:inset 0 0 0 6px #1d1814,inset 0 0 0 7px #8a7046,0 10px 0 -4px #0a0908;transform:none;transition:box-shadow .3s ease}
.shi .dj-card:hover{transform:none;box-shadow:inset 0 0 0 6px #1d1814,inset 0 0 0 7px #8a7046,0 10px 0 -4px #0a0908,0 0 34px rgba(217,179,108,.45)}
.shi .dj-card .dc-ico{display:none}
.shi .dj-card .dc-bd{display:flex;flex-direction:column;align-items:center;gap:10px}
.shi .dj-card .dc-t{font-family:'Yuji Syuku',serif;font-size:clamp(28px,4vw,46px);letter-spacing:.24em;padding-left:.24em;line-height:1.3;color:#f2efe9;text-shadow:none}
.shi .dj-card .dc-d{font-size:15px;line-height:1.9;color:#f2efe9;max-width:34em;margin:0}
.shi .dj-card .dc-go{display:flex;align-items:center;gap:14px;border:none;padding:0;margin:0;background:none!important;color:#d9b36c;font-size:16px;letter-spacing:.24em;white-space:nowrap}
.shi .dj-card .dc-go::before,.shi .dj-card .dc-go::after{content:"";width:40px;height:1px;background:#d9b36c}
/* 扉: JSが動く環境だけ閉じた状態で置き、画面に入ったら左右へ開く */
.shi .dj-card::before,.shi .dj-card::after{content:"";position:absolute;top:0;bottom:0;width:50%;z-index:2;box-sizing:border-box;border:2px solid #8a7046;background:radial-gradient(circle,transparent 4px,#d9b36c 4px,#d9b36c 6px,transparent 6.5px) no-repeat,linear-gradient(180deg,#3a2a1a,#2a1e13);background-size:16px 16px,auto;display:none;pointer-events:none;transition:transform 1.1s cubic-bezier(.6,0,.3,1) .3s}
.shi .dj-card::before{left:0;background-position:right 14px center,0 0}
.shi .dj-card::after{right:0;background-position:left 14px center,0 0}
html.shi-io .shi .dj-card::before,html.shi-io .shi .dj-card::after{display:block}
.shi .dj-card.open::before{transform:translateX(-102%)}
.shi .dj-card.open::after{transform:translateX(102%)}
@media (prefers-reduced-motion:reduce){html.shi-io .shi .dj-card::before,html.shi-io .shi .dj-card::after{display:none}}

/* 前書き(.lead): 箱をやめて上下の金の二重罫だけ(2026-10-26 代表が5案から採用) */
.shi .art p.lead{position:relative;background:none;border:none;box-shadow:none;border-top:3px double #d9b36c;border-bottom:3px double #d9b36c;color:#f2efe9;font-size:18.5px;margin:0 0 12px;padding:22px 4px}
.shi .art .lead a,.shi .art .lead .beni{color:#f2efe9}

/* ───── スマホ・タブレット(899px以下) ───── */
@media (max-width:899px){
  .shi .art p.lead{padding:20px 2px;font-size:17.5px}
  .shi{display:block;padding:24px 18px 0}
  .shi main.art{padding:0 0 60px}
  .shi .art h2{font-size:22px;margin:40px 0 16px}
  .shi .dj-card{padding:24px 18px 20px}
  .shi .dj-card .dc-t{letter-spacing:.16em;padding-left:.16em}

  /* 題字は「掛け軸」(2026-10-26 代表がC案を採用): 縦書きの題字を、金の上下線で囲んだ板に掛ける */
  .shi .pgh{position:static;flex-wrap:wrap;justify-content:center;gap:14px;margin:0 0 26px;padding:20px 16px 24px;background:#1a1613;border:1px solid #5a4a30;border-top:3px solid #d9b36c;border-bottom:3px solid #d9b36c}
  .shi .pgh .crumb{order:0;flex:0 0 100%;writing-mode:horizontal-tb;margin:0 0 8px;font-size:12px;letter-spacing:.14em;text-align:center}
  .shi .pgh h1.ttl{font-size:29px;max-height:480px}
  .shi .pgh .meta{margin-top:6em;font-size:13px}
}