*{box-sizing:border-box}body{margin:0;background:#f6f4ed;color:#334a46;font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif}.wrap{max-width:900px;margin:auto;padding:12px}.top{text-align:center;background:#fffdf9;border:1px solid #cbd9d4;border-radius:20px;padding:14px}.tag{font-size:12px;color:#56847b;letter-spacing:.12em}h1{font-family:"Yu Mincho",serif;font-weight:500;margin:5px;font-size:28px}.sub{font-size:13px;color:#687b77}.grid{display:grid;grid-template-columns:1.45fr .75fr;gap:10px;margin-top:10px}.card{background:#fffdf9;border:1px solid #cbd9d4;border-radius:20px;padding:12px}.stage{position:relative;border:1px solid rgba(142,174,166,.28);box-shadow:inset 0 1px 0 rgba(255,255,255,.95),inset 0 -18px 38px rgba(94,139,128,.035);background:radial-gradient(ellipse at 50% 38%,#ffffff 0,#f7fbfa 42%,#edf6f3 72%,#e5efec 100%);border-radius:16px;overflow:hidden}canvas{width:100%;display:block}.angle{position:absolute;right:12px;top:12px;background:rgba(255,250,246,.92);color:#a86143;border:1px solid rgba(222,169,137,.42);box-shadow:0 3px 10px rgba(76,99,93,.07);border-radius:20px;padding:5px 11px;font-size:12px;font-variant-numeric:tabular-nums}.legend{text-align:center;font-size:11px;color:#6c7f7b;margin:3px 0 8px}.slider{width:100%;accent-color:#df9369}.buttons{display:flex;gap:7px;justify-content:center;flex-wrap:wrap;margin-top:8px}button{border:0;border-radius:12px;padding:9px 13px;font:inherit;font-size:12px;cursor:pointer;background:#edf5f2;color:#4e8177}.primary{background:#4e8177;color:white;box-shadow:0 4px 10px rgba(78,129,119,.15)}button{transition:transform .15s ease,box-shadow .15s ease,background .15s ease}button:hover{transform:translateY(-1px);box-shadow:0 5px 12px rgba(58,89,82,.10)}.orange{background:#fff0e7;color:#aa6445}.status{text-align:center;min-height:42px;padding:8px;font-size:12px;color:#687b77}.side h2{font-size:15px;font-weight:500;margin:3px 0 10px}.choices{display:grid;gap:8px}.choice{border:1px solid #bfd0cb;background:white;border-radius:999px}.choice.sel{border-color:#df9369;background:#fff3eb}.choice.ok{border-color:#4e8177;background:#edf7f3}.choice.ng{border-color:#df9369;background:#fff0e7}.feedback{min-height:45px;text-align:center;font-size:12px;color:#687b77;padding:9px}.answer{display:none;background:#fff1e8;border-radius:13px;padding:12px;text-align:center;font-size:12px;line-height:1.8}.answer.show{display:block}.answer strong{display:block;color:#bd704d;font-size:20px}.hintbox{display:none;background:#fff8ee;border-radius:12px;padding:9px;font-size:12px;line-height:1.6;margin-top:7px}.hintbox.show{display:block}.point{margin-top:10px;background:#edf5f2;border-radius:13px;padding:10px;font-size:12px;line-height:1.8}.point b{color:#4e8177}.stage:after{content:'';position:absolute;left:16%;right:16%;bottom:7%;height:7%;border-radius:50%;background:rgba(45,70,65,.07);filter:blur(8px);pointer-events:none}.status b{color:#b76d4b}.answer strong{letter-spacing:.04em}.pulse{animation:pulse .75s ease 2}@keyframes pulse{50%{transform:scale(1.035);box-shadow:0 0 0 6px rgba(223,147,105,.10)}}@media(max-width:680px){.grid{grid-template-columns:1fr}h1{font-size:23px}}
.ch11-nav{max-width:920px;margin:10px auto 18px;padding:0 10px;display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center;font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif}.ch11-nav a{display:flex;align-items:center;justify-content:center;min-height:40px;padding:8px 12px;border:1px solid #cbd9d4;border-radius:12px;background:#fffdf9;color:#4e8177;text-decoration:none;font-size:12px}.ch11-nav .prev{justify-self:start}.ch11-nav .next{justify-self:end}.ch11-nav .toc{background:#4e8177;color:#fff;border-color:#4e8177;font-weight:700}.ch11-home{max-width:920px;margin:-8px auto 18px;text-align:center;font:12px "Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif}.ch11-home a{color:#71847f;text-decoration:none}@media(max-width:600px){.ch11-nav{grid-template-columns:1fr 1fr}.ch11-nav .toc{grid-column:1/3;grid-row:1}.ch11-nav .prev,.ch11-nav .next{width:100%}}
/* CH11 second-pass consistency */
button{transition:transform .14s ease,box-shadow .14s ease,background .14s ease}
button:hover{transform:translateY(-1px)}
canvas{image-rendering:auto}