:root{
  --ink:#0d0d0f; --ink-2:#141418; --ink-3:#1c1c22;
  --line:#2a2a33; --line-2:#3a3a46;
  --fg:#f4f2ee; --fg-dim:#c5c2bb; --fg-mute:#9d9991;
  --signal:#f0b429; --signal-dim:#a37d24;
  --signal-bg:#f0b429; --on-signal:#241800;
  --tint-1:rgba(240,180,41,.09);
  --veil:rgba(13,13,15,.86); --veil-solid:rgba(8,8,10,.97);
  color-scheme:dark;
}
:root[data-theme="light"]{
  --ink:#ffffff; --ink-2:#f5f5f4; --ink-3:#ebebe9;
  --line:#e3e3e0; --line-2:#c8c8c3;
  --fg:#17171a; --fg-dim:#54545a; --fg-mute:#75757b;
  --signal:#9c1c46; --signal-dim:#8e4a60;
  --signal-bg:#a81f4c; --on-signal:#ffffff;
  --tint-1:rgba(156,28,70,.06);
  --veil:rgba(255,255,255,.9); --veil-solid:rgba(255,255,255,.98);
  color-scheme:light;
}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --ink:#ffffff; --ink-2:#f5f5f4; --ink-3:#ebebe9;
    --line:#e3e3e0; --line-2:#c8c8c3;
    --fg:#17171a; --fg-dim:#54545a; --fg-mute:#75757b;
    --signal:#9c1c46; --signal-dim:#8e4a60;
    --signal-bg:#a81f4c; --on-signal:#ffffff;
    --tint-1:rgba(156,28,70,.06);
    --veil:rgba(255,255,255,.9); --veil-solid:rgba(255,255,255,.98);
    color-scheme:light;
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--ink);color:var(--fg);
  font-family:"Zen Kaku Gothic New",system-ui,sans-serif;font-size:15px;line-height:1.9;
  -webkit-font-smoothing:antialiased}
a{color:var(--signal);text-underline-offset:3px}
button{background:none;border:0;color:inherit;font:inherit;cursor:pointer}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}

.skip{position:absolute;left:-9999px;top:0;z-index:300;padding:12px 18px;background:var(--signal-bg);color:var(--on-signal);font-weight:700}
.skip:focus{left:8px;top:8px}

/* 年齢確認 */
.gate{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:28px;background:var(--veil-solid)}
.gate__box{max-width:400px;text-align:center}
.gate__mark{font-family:"Instrument Serif","Zen Old Mincho",serif;font-size:38px;line-height:1}
.gate__rule{width:34px;height:1px;background:var(--signal);margin:19px auto}
.gate__t{font-family:"Zen Old Mincho",serif;font-size:17px;line-height:1.7;margin-bottom:12px}
.gate__p{font-size:12.5px;color:var(--fg-mute);line-height:1.85;margin-bottom:24px}
.gate__yes{display:block;width:100%;height:50px;background:var(--signal-bg);color:var(--on-signal);font-weight:700;letter-spacing:.06em;border-radius:999px}
.gate__no{display:block;width:100%;height:44px;margin-top:9px;border:1px solid var(--line-2);color:var(--fg-mute);font-size:13px;border-radius:999px}

/* ヘッダー */
.hd{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:12px;height:56px;padding:0 16px;
  background:var(--veil);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hd__mark{font-family:"Instrument Serif","Zen Old Mincho",serif;font-size:25px;line-height:1;white-space:nowrap;text-decoration:none;color:var(--fg)}
.hd__sub{font-size:11.5px;color:var(--fg-dim);border-left:1px solid var(--line-2);padding-left:11px;white-space:nowrap}
@media (max-width:560px){.hd__sub{display:none}}
.hd__nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.hd__nav a,.hd__nav button{display:grid;place-items:center;height:32px;padding:0 12px;border:1px solid var(--line);
  border-radius:2px;color:var(--fg-mute);font-size:12px;text-decoration:none;line-height:1}
.hd__nav a:hover,.hd__nav button:hover{border-color:var(--line-2);color:var(--fg-dim)}

/* 広告表記 */
.adnote{padding:7px 16px;background:var(--ink-2);border-bottom:1px solid var(--line);
  font-size:11px;color:var(--fg-mute);letter-spacing:.02em}

.wrap{max-width:760px;margin:0 auto;padding:0 20px 80px}
.hero{padding:56px 0 40px;border-bottom:1px solid var(--line)}
.hero h1{font-family:"Zen Old Mincho",serif;font-size:clamp(25px,6.4vw,38px);font-weight:900;line-height:1.4;letter-spacing:.03em}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero p{margin-top:18px;color:var(--fg-dim);font-size:14.5px}

h2{font-family:"Zen Old Mincho",serif;font-size:20px;font-weight:700;letter-spacing:.06em;margin:44px 0 16px;line-height:1.5}
h3{font-size:15px;font-weight:700;letter-spacing:.04em;margin:30px 0 10px}
p{margin-bottom:1.5em}
.lead{font-size:16px;color:var(--fg)}
ul,ol{margin:0 0 1.5em 1.3em}
li{margin-bottom:.5em}
strong{color:var(--signal);font-weight:700}
hr{border:0;border-top:1px solid var(--line);margin:40px 0}

.cards{display:grid;gap:2px;margin-top:20px}
.card{display:block;padding:18px;background:var(--ink-2);text-decoration:none;color:inherit;transition:background .16s}
.card:hover{background:var(--ink-3)}
.card__k{font-size:10px;font-weight:700;letter-spacing:.16em;color:var(--signal)}
.card__t{font-family:"Zen Old Mincho",serif;font-size:17px;font-weight:700;margin:7px 0 6px;line-height:1.5}
.card__d{font-size:12.5px;color:var(--fg-dim);line-height:1.8}
@media (min-width:700px){.cards{grid-template-columns:1fr 1fr}}

.meta{font-size:11.5px;color:var(--fg-mute);letter-spacing:.04em;margin-bottom:26px}
.back{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px 0 11px;margin-bottom:24px;
  border:1px solid var(--line-2);border-radius:2px;font-size:12.5px;color:var(--fg-dim);text-decoration:none}
.back:hover{border-color:var(--signal);color:var(--signal)}

.tbl{width:100%;border-collapse:collapse;margin:0 0 1.8em}
.tbl th,.tbl td{padding:11px 12px;border:1px solid var(--line);text-align:left;font-size:13.5px;vertical-align:top}
.tbl th{background:var(--ink-2);font-weight:700;white-space:nowrap}

.note{padding:16px;border:1px solid var(--signal-dim);background:var(--tint-1);border-radius:2px;
  font-size:13px;line-height:1.9;color:var(--signal);margin-bottom:1.8em}

.ft{border-top:1px solid var(--line);padding:30px 20px 60px;text-align:center}
.ft__nav{display:flex;flex-wrap:wrap;justify-content:center;gap:18px;margin-bottom:18px}
.ft__nav a{font-size:12.5px;color:var(--fg-dim);text-decoration:none}
.ft__nav a:hover{color:var(--signal)}
.ft__c{font-size:11px;color:var(--fg-mute);line-height:2}
.gform{width:100%;min-height:760px;border:1px solid var(--line);border-radius:2px;background:#fff;display:block}