:root{
  --paper:#f7f2e7;--paper-deep:#efe8d8;--ink:#20242a;--sumi:#0e1a22;
  --red:#d43b30;--marker:#ffe066;--marker-soft:rgba(255,224,102,.55);--blue-pen:#2b5d8a;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Noto Sans JP',sans-serif;color:var(--ink);background:var(--paper);line-height:2.1;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.grid-paper{
  background-image:
    linear-gradient(rgba(43,93,138,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(43,93,138,.05) 1px,transparent 1px);
  background-size:28px 28px;
}
header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:58px;
  display:flex;justify-content:space-between;align-items:center;padding:0 20px;
  background:rgba(247,242,231,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(32,36,42,.1);
}
.brand{display:flex;align-items:center;gap:10px}
.brand .stamp{width:38px;height:38px;display:block}
.brand .stamp img{width:100%;height:100%;display:block}
.brand .lockup{line-height:1.3}
.brand .lockup b{display:block;font-family:'Zen Old Mincho',serif;font-weight:700;font-size:14.5px;letter-spacing:.1em}
.brand .lockup span{display:block;font-size:8.5px;letter-spacing:.24em;color:#a09577;font-weight:700}
.h-cta{
  background:var(--red);color:#fff;font-weight:700;font-size:12.5px;
  padding:9px 18px;border-radius:999px;box-shadow:0 3px 10px rgba(212,59,48,.3);transition:.25s;white-space:nowrap;
}
.h-cta:hover{transform:translateY(-2px)}
.letter{max-width:680px;margin:0 auto;padding:0 26px}
.u-marker{background:linear-gradient(transparent 55%,var(--marker-soft) 55%);padding:0 2px;font-weight:700}
.u-red{color:var(--red);font-weight:700}

/* ===== コラム一覧 ===== */
.bl-hero{padding:130px 0 50px;position:relative;text-align:center}
.bl-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 50% 40%, rgba(252,249,241,.95), rgba(252,249,241,0) 72%)}
.bl-hero .letter{position:relative;max-width:760px}
.bl-kicker{font-family:'Klee One',cursive;font-weight:600;color:var(--red);font-size:15px;margin-bottom:18px}
.bl-hero h1{
  font-family:'Zen Old Mincho',serif;font-weight:900;
  font-size:clamp(24px,4.6vw,38px);line-height:1.95;letter-spacing:.03em;
}
.bl-hero h1 .u{background:linear-gradient(transparent 52%,var(--marker) 52%);padding:0 3px}
.bl-hero .sub{margin-top:20px;font-size:14.5px;color:#5a5546}
.bl-list{max-width:760px;margin:0 auto;padding:40px 26px 90px}
.bl-card{
  display:flex;gap:20px;background:#fffdf6;border:1px solid #e5dcc4;border-radius:10px;
  padding:26px 28px;margin-bottom:18px;transition:.25s;align-items:flex-start;
  box-shadow:0 4px 16px rgba(80,66,40,.06);
}
.bl-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(80,66,40,.14)}
.bl-card .stg{
  flex-shrink:0;width:92px;text-align:center;
  font-family:'Zen Old Mincho',serif;font-weight:700;font-size:12px;line-height:1.7;
  padding:10px 6px;border-radius:7px;color:var(--ink);
}
.bl-card .stg small{display:block;font-size:9.5px;font-weight:700;opacity:.75;font-family:'Noto Sans JP',sans-serif}
.bl-card h2{font-family:'Zen Old Mincho',serif;font-weight:900;font-size:17.5px;line-height:1.8;margin-bottom:8px}
.bl-card p{font-size:13px;color:#6a6354;line-height:1.9}
.bl-card .more{font-size:12px;color:var(--red);font-weight:700;margin-top:8px;display:inline-block}

/* ===== 記事 ===== */
.art-hero{padding:130px 0 40px;position:relative}
.art-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 45% 40%, rgba(252,249,241,.95), rgba(252,249,241,0) 72%)}
.art-hero .letter{position:relative}
.art-chip{
  display:inline-block;font-family:'Zen Old Mincho',serif;font-weight:700;font-size:12.5px;
  padding:6px 16px;border-radius:999px;margin-bottom:20px;color:var(--ink);
}
.art-hero h1{
  font-family:'Zen Old Mincho',serif;font-weight:900;
  font-size:clamp(23px,4.4vw,34px);line-height:1.95;letter-spacing:.03em;
}
.art-hero h1 .u{background:linear-gradient(transparent 52%,var(--marker) 52%);padding:0 3px}
.art-meta{margin-top:16px;font-size:12px;color:#9a917d}
.art-body{padding:30px 0 70px}
.art-body .lead{
  font-size:15.5px;color:#3a3f47;border-left:4px solid var(--red);
  padding:6px 0 6px 20px;margin-bottom:44px;
}
.art-body h2{
  font-family:'Zen Old Mincho',serif;font-weight:900;font-size:clamp(19px,3vw,24px);
  line-height:1.9;margin:54px 0 20px;padding-bottom:10px;
  border-bottom:2px solid rgba(32,36,42,.12);
}
.art-body h2:before{content:"■";color:var(--red);font-size:.7em;margin-right:10px;vertical-align:2px}
.art-body p{font-size:15.5px;color:#3a3f47;margin-bottom:1.5em}
.art-body p b{color:var(--ink)}
.point{
  margin:28px 0;padding:22px 26px;background:#fffdf6;border-left:5px solid var(--red);
  box-shadow:0 4px 14px rgba(80,66,40,.08);font-size:14.5px;line-height:2;
}
.point .pt{font-family:'Zen Old Mincho',serif;font-weight:900;font-size:12.5px;color:var(--red);letter-spacing:.18em;display:block;margin-bottom:6px}
.case-box{
  margin:28px 0;padding:24px 26px;background:var(--paper-deep);border-radius:10px;font-size:14.5px;line-height:2;
}
.case-box .ct{font-family:'Zen Old Mincho',serif;font-weight:900;font-size:15px;display:block;margin-bottom:8px}
.case-box .ct em{font-style:normal;color:var(--red)}
.tewaza{
  margin:28px 0;padding:24px 28px;position:relative;
  font-family:'Klee One',cursive;font-weight:600;font-size:clamp(15px,2.2vw,18px);
  line-height:2.1;color:var(--red);
}
.tewaza svg{position:absolute;inset:0;width:100%;height:100%}
ol.steps{margin:20px 0 28px;padding-left:0;list-style:none;counter-reset:st}
ol.steps li{
  counter-increment:st;position:relative;padding:14px 0 14px 52px;
  border-bottom:1px dashed #d0c6aa;font-size:14.5px;line-height:1.95;
}
ol.steps li:before{
  content:counter(st);position:absolute;left:6px;top:14px;width:30px;height:30px;
  background:var(--ink);color:#fff;border-radius:50%;display:grid;place-items:center;
  font-family:'Zen Old Mincho',serif;font-weight:900;font-size:14px;
}
ol.steps li b{color:var(--red)}
/* 6段解剖チャート */
.anatomy{margin:30px 0 36px}
.a-row{
  display:flex;gap:14px;align-items:flex-start;padding:13px 10px;
  border-bottom:1px dashed #d0c6aa;
}
.a-row .chip{
  flex-shrink:0;width:128px;text-align:center;font-family:'Zen Old Mincho',serif;
  font-weight:700;font-size:11.5px;padding:9px 6px;border-radius:6px;line-height:1.5;color:var(--ink);
}
.a-row p{font-size:13.5px;line-height:1.9;color:#4a4f57;margin:0}
.a-row.win{
  background:#fffdf6;border:2px solid var(--red);border-radius:10px;
  position:relative;margin:8px 0;padding:16px 12px;border-bottom:2px solid var(--red);
}
.a-row.win:before{
  content:"勝ち段";position:absolute;top:-11px;right:14px;background:var(--red);color:#fff;
  font-size:10px;font-weight:700;padding:2px 12px;border-radius:999px;letter-spacing:.15em;
}
.series-h{
  max-width:760px;margin:50px auto 6px;padding:0 26px;
  font-family:'Zen Old Mincho',serif;font-weight:900;font-size:clamp(18px,3vw,23px);
}
.series-h small{
  display:block;font-family:'Klee One',cursive;font-weight:600;font-size:13px;color:var(--red);margin-bottom:4px;
}
.series-sub{max-width:760px;margin:0 auto 20px;padding:0 26px;font-size:13px;color:#6a6354}
/* 記事内CTA */
.art-cta{
  margin:60px 0 0;background:#fffdf6;border:2px solid var(--ink);border-radius:12px;
  padding:36px 32px;text-align:center;box-shadow:8px 10px 0 rgba(32,36,42,.9);
}
.art-cta .t{font-family:'Zen Old Mincho',serif;font-weight:900;font-size:clamp(17px,2.8vw,22px);line-height:1.9;margin-bottom:12px}
.art-cta .t .u{background:linear-gradient(transparent 52%,var(--marker) 52%)}
.art-cta p{font-size:13px;color:#5a5546;margin-bottom:20px}
.btn-main{
  display:inline-block;background:var(--red);color:#fff;font-weight:900;font-size:15.5px;
  padding:16px 38px;border-radius:999px;box-shadow:0 8px 24px rgba(212,59,48,.4);transition:.25s;border:none;cursor:pointer;
}
.btn-main:hover{transform:translateY(-3px)}
/* 前後記事 */
.art-nav{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap}
.art-nav a{
  flex:1;min-width:220px;background:#fffdf6;border:1px solid #e5dcc4;border-radius:8px;
  padding:16px 18px;font-size:12.5px;line-height:1.8;transition:.25s;
}
.art-nav a:hover{transform:translateY(-3px);box-shadow:0 10px 22px rgba(80,66,40,.12)}
.art-nav .dir{display:block;font-size:10.5px;color:var(--red);font-weight:700;letter-spacing:.1em;margin-bottom:4px}
.art-nav b{font-family:'Zen Old Mincho',serif;font-size:13px}
.back{display:block;text-align:center;margin-top:36px;font-size:13px;color:#9a917d;text-decoration:underline}
footer{background:var(--sumi);color:#7f95a3;padding:36px 24px;text-align:center;font-size:11px;line-height:2}
footer a{text-decoration:underline}
.reveal{opacity:0;transform:translateY(24px);transition:.7s ease}
.reveal.on{opacity:1;transform:none}
@media(max-width:640px){
  .bl-card{flex-direction:column;gap:12px}
  .bl-card .stg{width:auto;display:inline-block;padding:6px 14px}
  .art-cta{padding:28px 20px}
}