:root{
  --bg:#f8f3fb;
  --surface:#ffffff;
  --surface-alt:#f1e9fa;
  --ink:#2b2140;
  --ink-soft:#6b5c86;
  --ink-faint:#a196b8;
  --accent:#c23b86;
  --accent2:#6b3fa0;
  --line:rgba(43,33,64,0.12);
  --line-strong:rgba(43,33,64,0.22);
  --glow-a:#8b5fbf;
  --glow-b:#ef6fa8;
  --card-shadow: 0 14px 34px -18px rgba(107,63,160,0.35);
  --font-display:"Zen Old Mincho","Hiragino Mincho ProN",serif;
  --font-body:"Zen Maru Gothic","Hiragino Kaku Gothic ProN",sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#170f22; --surface:#221733; --surface-alt:#1c1229;
    --ink:#f1e9fb; --ink-soft:#c2afda; --ink-faint:#8a7aa3;
    --accent:#f06fa8; --accent2:#9b6fdb;
    --line:rgba(241,233,251,0.14); --line-strong:rgba(241,233,251,0.26);
    --glow-a:#9b6fdb; --glow-b:#f06fa8;
    --card-shadow: 0 14px 34px -18px rgba(0,0,0,0.55);
  }
}
:root[data-theme="dark"]{
  --bg:#170f22; --surface:#221733; --surface-alt:#1c1229;
  --ink:#f1e9fb; --ink-soft:#c2afda; --ink-faint:#8a7aa3;
  --accent:#f06fa8; --accent2:#9b6fdb;
  --line:rgba(241,233,251,0.14); --line-strong:rgba(241,233,251,0.26);
  --glow-a:#9b6fdb; --glow-b:#f06fa8;
  --card-shadow: 0 14px 34px -18px rgba(0,0,0,0.55);
}

*{box-sizing:border-box;}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font-body); font-size:16.5px; line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2{font-family:var(--font-display); font-weight:700; margin:0;}
a{color:inherit;}
p{margin:0;}

.a-header{
  position:sticky; top:0; z-index:10; background:color-mix(in srgb, var(--bg) 85%, transparent);
  -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px); border-bottom:1px solid var(--line);
}
.a-header-inner{
  max-width:760px; margin:0 auto; padding:14px 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.a-brand{display:flex; align-items:center; gap:10px; text-decoration:none; font-family:var(--font-display); font-weight:700; font-size:18px;}
.a-seal{
  width:32px; height:32px; border-radius:10px; flex:none;
  background:linear-gradient(145deg, var(--glow-a), var(--glow-b)); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:16px; font-weight:700;
}
.a-back{font-size:13.5px; color:var(--ink-soft); text-decoration:none;}
.a-back:hover{color:var(--accent);}

.a-wrap{max-width:760px; margin:0 auto; padding:48px 24px 80px;}

.a-breadcrumb{
  max-width:760px; margin:0 auto; padding:14px 24px 0;
  font-size:12.5px; color:var(--ink-faint);
  display:flex; flex-wrap:wrap; gap:6px; align-items:center;
}
.a-breadcrumb a{color:var(--ink-faint); text-decoration:none;}
.a-breadcrumb a:hover{color:var(--accent);}
.a-breadcrumb span[aria-current]{color:var(--ink-soft);}

.a-related{margin-top:28px; padding-top:22px; border-top:1px dashed var(--line-strong);}
.a-related h2{font-size:15.5px; margin-bottom:12px; color:var(--ink-soft);}
.a-related-links{display:flex; flex-wrap:wrap; gap:8px;}
.a-related-links a{
  font-size:13px; color:var(--accent2); text-decoration:none;
  background:var(--surface-alt); border-radius:999px; padding:7px 14px;
}
.a-related-links a:hover{color:var(--accent);}

.a-card{background:var(--surface); border-radius:24px; box-shadow:var(--card-shadow); padding:40px 36px;}
.a-badge{
  width:56px; height:56px; border-radius:50%; flex:none;
  background:linear-gradient(140deg, var(--glow-a), var(--glow-b)); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:22px; font-weight:700; margin-bottom:16px;
}
.a-card h1{font-size:clamp(24px,4vw,30px); margin-bottom:8px;}
.a-keyword{color:var(--ink-soft); font-size:14.5px; margin-bottom:28px;}
.a-section{margin-top:26px; padding-top:22px; border-top:1px dashed var(--line-strong);}
.a-section:first-of-type{border-top:none; padding-top:0; margin-top:24px;}
.a-section h2{font-size:18px; margin-bottom:10px;}
.a-section p{font-size:15.5px; color:var(--ink);}

.a-cta{
  margin-top:32px; padding:22px; border-radius:16px; background:var(--surface-alt);
  text-align:center;
}
.a-cta p{margin-bottom:14px; color:var(--ink-soft); font-size:14.5px;}
.a-cta-btn{
  display:inline-flex; align-items:center; gap:6px; font-weight:700; font-size:14px;
  padding:12px 24px; border-radius:999px; text-decoration:none; color:#fff;
  background:linear-gradient(120deg, var(--accent2), var(--accent));
  box-shadow:0 10px 24px -10px rgba(194,59,134,0.55);
}

.a-card > .a-back{display:inline-block; margin-top:28px;}

.a-index-title{font-size:clamp(26px,4.5vw,34px); text-align:center; margin-bottom:14px;}
.a-index-lead{color:var(--ink-soft); text-align:center; font-size:15.5px; max-width:52ch; margin:0 auto 36px;}
.a-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px;}
@media (max-width:600px){ .a-grid{grid-template-columns:repeat(2,1fr);} }
.a-grid-item{
  display:flex; flex-direction:column; align-items:center; gap:8px; text-align:center;
  background:var(--surface); border-radius:18px; padding:22px 14px; text-decoration:none;
  box-shadow:var(--card-shadow); transition:transform .15s ease;
}
.a-grid-item:hover{transform:translateY(-2px);}
.a-grid-badge{
  width:44px; height:44px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(140deg, var(--glow-a), var(--glow-b)); color:#fff;
  font-family:var(--font-display); font-size:18px; font-weight:700;
}
.a-grid-name{font-family:var(--font-display); font-weight:700; font-size:15px;}
.a-grid-kw{font-size:12.5px; color:var(--ink-faint);}

.a-footer{padding:40px 24px 60px; text-align:center;}
.a-footer nav{display:flex; gap:18px; justify-content:center; flex-wrap:wrap; margin-bottom:14px;}
.a-footer nav a{font-size:13px; color:var(--ink-faint); text-decoration:none;}
.a-footer nav a:hover{color:var(--accent);}
.a-footer p{font-size:12.5px; color:var(--ink-faint);}

@media (min-width:860px){
  body{font-size:17px;}
  .a-section p{font-size:16px;}
}