:root{--bg:#141210;--bg2:#1c1916;--line:#2e2a25;--text:#efe8dc;--muted:#a69d90;--accent:#8f9fd6;--cream:#f3ead9}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.65 "Inter",system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:5;background:rgba(20,18,16,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;text-decoration:none}
.mark{width:30px;height:30px;border-radius:8px;background:var(--cream);color:#141210;display:grid;place-items:center;font:700 17px "Noto Serif JP",serif}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid var(--line);transition:.15s}
.btn.primary{background:var(--cream);color:#141210;border-color:var(--cream)}
.btn:hover{transform:translateY(-1px)}
.btn.sm{padding:7px 16px;font-size:14px}
.hero{padding:88px 0 72px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.tag{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 12px;margin-bottom:22px}
h1{font:700 clamp(36px,6vw,58px)/1.2 "Noto Serif JP",serif;margin-bottom:18px}
h1 em{font-style:normal;color:var(--accent)}
.sub{font-size:20px;font-weight:600;margin-bottom:12px}
.lead{color:var(--muted);max-width:480px;margin-bottom:28px}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.stats{display:flex;gap:12px;flex-wrap:wrap}
.stat{border:1px solid var(--line);background:var(--bg2);border-radius:12px;padding:12px 16px;min-width:108px}
.stat b{display:block;font:600 22px "Noto Serif JP",serif}
.stat span{font-size:11px;letter-spacing:.1em;color:var(--muted)}
.tile{aspect-ratio:1;max-width:320px;margin:0 auto;border-radius:28%;background:var(--bg2);border:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;place-content:center;gap:4px 18px;font:600 48px "Noto Serif JP",serif;text-align:center;padding:60px;box-shadow:0 40px 120px rgba(143,159,214,.08)}
section{padding:72px 0;border-top:1px solid var(--line)}
.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--muted);margin-bottom:10px}
h2{font:700 clamp(26px,4vw,36px)/1.3 "Noto Serif JP",serif;margin-bottom:14px}
.intro{color:var(--muted);max-width:620px;margin-bottom:36px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:24px}
.card h3{font-size:17px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.levels{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.lv{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:18px}
.lv b{font:700 26px "Noto Serif JP",serif;display:block}
.lv small{color:var(--muted);font-size:13px}
.two{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.two ul{list-style:none;color:var(--muted)}
.two li{padding:4px 0}
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{cursor:pointer;font-weight:600;list-style:none}
summary::after{content:"+";float:right;color:var(--muted)}
details[open] summary::after{content:"–"}
details p{color:var(--muted);margin-top:10px}
.final{text-align:center}
.final .ctas{justify-content:center}
footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{text-decoration:none}footer a:hover{color:var(--text)}
.doc{max-width:760px;padding:56px 20px 80px;margin:0 auto}
.doc h1{font-size:clamp(30px,5vw,42px)}
.doc .date{color:var(--muted);margin-bottom:32px}
.doc h2{font-size:22px;margin:36px 0 10px}
.doc h3{font-size:17px;margin:22px 0 6px}
.doc p,.doc li{color:#d6cec2}
.doc ul{padding-left:20px;margin:8px 0}
.doc li{margin:6px 0}
@media(max-width:860px){.hero{grid-template-columns:1fr;padding:56px 0}.tile{display:none}.grid{grid-template-columns:1fr 1fr}.levels{grid-template-columns:repeat(3,1fr)}.two{grid-template-columns:1fr}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.levels{grid-template-columns:1fr 1fr}.hide-sm{display:none}}