:root{--bg:#f7f4ee;--card:#fffdf9;--ink:#25221d;--sub:#6b6458;--line:#e6dfd2;--r:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}a{color:var(--c)}.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px 12px;z-index:9}
.top{position:sticky;top:0;z-index:5;background:rgba(247,244,238,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.top .wrap{display:flex;align-items:center;gap:18px;height:62px}
.brand{font-weight:800;text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:10px}.mark{width:16px;height:16px;border-radius:5px;background:var(--c);transform:rotate(45deg);display:inline-block}
.top nav{margin-left:auto;display:flex;gap:4px}.top nav a{font-size:13px;color:var(--sub);text-decoration:none;padding:6px 10px;border-radius:99px;white-space:nowrap}.top nav a:hover{background:#fff;color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;background:var(--c);color:#fff;font-weight:700;padding:12px 22px;border-radius:999px;text-decoration:none;cursor:pointer}.btn.ghost{background:#fff;color:var(--c);box-shadow:inset 0 0 0 1.5px var(--c)}.btn.off{background:#ddd5c7;color:#6b6458;cursor:default}
.hero{padding:52px 0 40px}.hg{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:99px;padding:4px 14px;font-size:13px;font-weight:700;color:var(--sub);margin:0 0 14px}
h1{font-size:clamp(30px,4.6vw,50px);line-height:1.25;margin:0 0 16px}h1 em{font-style:normal;color:var(--c)}.lead{font-size:17px;color:#4d463c;margin:0 0 20px}
.stats{list-style:none;padding:0;margin:0 0 20px;display:flex;gap:10px;flex-wrap:wrap}.stats li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px 16px;display:flex;gap:6px;align-items:baseline}.stats b{font-size:22px}.stats span{font-size:13px;color:var(--sub)}
.ctas{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.cp{font-size:13px;color:var(--sub)}.cp b{color:var(--c)}
.art{margin:0}.art img{border-radius:28px;box-shadow:0 30px 60px -36px rgba(40,30,10,.5)}
.sec{padding:64px 0}.band{background:rgba(255,255,255,.6)}.h2{font-size:clamp(22px,3vw,30px);margin:0 0 18px}.h2p{margin:-8px 0 18px;color:var(--sub)}
.tools{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}.tool h3{margin:0 0 4px;font-size:18px}.tp{margin:0 0 14px;color:var(--sub);font-size:14px}
.q{border:1px solid var(--line);border-radius:16px;padding:12px 14px;margin:0 0 10px;background:#fff}.qn{margin:0;font-weight:800;color:var(--c);font-size:13px}
.qc,.typ{margin:6px 0 10px;background:#1f2430;color:#e6e9f0;border-radius:12px;padding:10px 14px;font:13.5px/1.6 "SF Mono",Menlo,Consolas,monospace;overflow-x:auto;white-space:pre}
.qa2{display:flex;gap:8px;flex-wrap:wrap}.opt{border:1.5px solid var(--line);background:#fff;border-radius:99px;padding:6px 14px;font-weight:700;cursor:pointer;font-size:13.5px}.opt.ok{border-color:#4f9a5c;background:#eaf4ec}.opt.ng{border-color:#c9584a;background:#fbece9}
.qfb{font-size:13.5px;margin-top:8px;display:grid;gap:4px}.qfb:empty{display:none}.msg{font:12.5px/1.5 "SF Mono",Menlo,monospace;background:#f3efe7;border-radius:8px;padding:6px 8px;white-space:pre-wrap;word-break:break-word}
.okc{color:#3f8a4c}.ngc{color:#c4554a}.score{font-weight:800;margin:6px 0 0}
textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:10px;font:13.5px/1.6 "SF Mono",Menlo,monospace;background:#fff}
#shapeout p{margin:6px 0;font-size:14px;padding:6px 10px;border-radius:10px}.good{background:#eaf4ec}.bad{background:#fbece9}.tip{font-size:13px;color:var(--sub);margin:10px 0 0}code{font-family:"SF Mono",Menlo,monospace;font-size:.92em}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid2 label{display:flex;flex-direction:column;gap:3px;font-size:12.5px;font-weight:700;color:var(--sub)}.grid2 input{border:1.5px solid var(--line);border-radius:10px;padding:7px 10px;font-size:15px;background:#fff;color:var(--ink)}
.res{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}.r{background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}.r span{display:block;font-size:12px;color:var(--sub);font-weight:700}.r b{font-size:20px}.r small{display:block;font-size:11.5px;color:var(--sub)}
.judge{grid-column:1/-1;margin:2px 0 0;font-weight:700;font-size:14px}
.bars{display:grid;gap:6px;margin-top:12px}.bars div{display:grid;grid-template-columns:96px 1fr;gap:8px;align-items:center;font-size:12.5px;color:var(--sub)}.bars i{display:block;height:14px;border-radius:7px;background:var(--c);transition:width .3s}.bars div+div i{background:#8fae7a}
.goals{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;counter-reset:g}.goals li{counter-increment:g;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px 16px 16px 52px;position:relative;font-weight:700}
.goals li::before{content:counter(g);position:absolute;left:14px;top:15px;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--c);color:#fff;font-size:13px}
.chap{background:var(--card);border:1px solid var(--line);border-radius:18px;margin:10px 0;overflow:hidden}.chap summary{cursor:pointer;display:grid;grid-template-columns:120px auto 1fr auto;gap:14px;align-items:center;padding:10px 16px 10px 10px;list-style:none}.chap summary::-webkit-details-marker{display:none}
.chap summary img{width:120px;height:68px;object-fit:cover;border-radius:10px}.cn{font-size:12px;font-weight:800;color:var(--c)}.cc{font-size:12.5px;color:var(--sub)}
.chap ol{list-style:none;margin:0;padding:4px 18px 14px 144px}.chap li{padding:5px 0;border-top:1px dashed var(--line);font-size:14.5px}.chap li span{display:inline-block;width:44px;color:var(--c);font-weight:800;font-size:13px}
.course{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}.ct{margin:0;font-weight:800;font-size:18px}.cs{margin:4px 0 10px;color:var(--sub);font-size:14px}.cl{margin:14px 0 4px;font-weight:800;color:var(--c);font-size:14px}
.course ul{margin:0;padding-left:1.2em;font-size:14.5px}.vids{list-style:none;padding:0;margin:0;display:grid;gap:10px}.vid{display:grid;grid-template-columns:120px 1fr;gap:12px;align-items:center}
.vthumb{position:relative;aspect-ratio:16/9;border:0;border-radius:12px;background:var(--s);cursor:pointer}.vthumb:disabled{cursor:default}.vno{position:absolute;left:8px;top:6px;font-weight:800;color:var(--c)}.vplay{font-size:22px;color:var(--c)}.vsoon{font-size:12px;background:#fff;border-radius:99px;padding:2px 10px;color:var(--sub)}
.vt{font-size:14px;font-weight:700}.vframe{grid-column:1/-1}.vframe iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:12px}.note{font-size:12px;color:var(--sub)}
.qa{background:var(--card);border:1px solid var(--line);border-radius:16px;margin:8px 0;padding:0 18px;max-width:860px}.qa summary{cursor:pointer;padding:14px 0;font-weight:700}.qa p{margin:0 0 14px;font-size:14.5px}
footer{background:#2b2620;color:#d9d1c3;padding:36px 0;font-size:13px}footer a{color:#fff}.fb{font-weight:800;color:#fff;display:flex;gap:10px;align-items:center}
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s,transform .6s}.js .reveal.in{opacity:1;transform:none}
@media (max-width:900px){.hg,.tools,.course{grid-template-columns:1fr}.top nav{display:none}}
@media (max-width:560px){.grid2,.res{grid-template-columns:1fr}.chap summary{grid-template-columns:80px 1fr auto}.chap summary img{width:80px;height:45px}.chap summary .cn{display:none}.chap ol{padding-left:18px}.vid{grid-template-columns:96px 1fr}}
.tools>*,.course>*,.hg>*{min-width:0}.q,.tool{min-width:0}