:root{color-scheme:dark;--bg:#111722;--panel:#1b2331;--line:#344052;--text:#f5f0e9;--muted:#a5b2c4;--accent:#a9cce2;--ink:#162634}*{box-sizing:border-box}body{margin:0;color:var(--text);background:radial-gradient(ellipse at 70% 0,#31486338,transparent 65%),var(--bg);font-family:system-ui,-apple-system,'Hiragino Kaku Gothic ProN','Noto Sans JP',sans-serif;line-height:1.75}.manual-page{--accent:#edbaa7;--ink:#382621;background:radial-gradient(ellipse at 75% 0,#77514a25,transparent 65%),var(--bg)}header,main,footer{max-width:1160px;padding:24px 30px;margin:auto}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:23px;font-weight:800;white-space:nowrap}header>a:last-child,footer{font-size:12px;color:var(--muted)}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}main{padding-top:38px;min-height:75vh}.intro{margin-bottom:28px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.16em;color:var(--accent);margin:0 0 12px}h1{font-size:clamp(28px,3.4vw,42px);line-height:1.5;letter-spacing:-.04em;margin:0 0 12px}h1:focus{outline:none}h2{font-size:18px;margin:0 0 12px}h3{font-size:15px;margin:0 0 8px}p{margin:10px 0}.muted{color:var(--muted);font-size:14px}.fine{color:var(--muted);font-size:12px;line-height:1.8}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}button,input,textarea,select{font:inherit}button{color:var(--text);background:#273344;border:1px solid #47566a;border-radius:10px;padding:10px 16px;cursor:pointer;touch-action:manipulation}button:hover:not(:disabled){background:#33455a;border-color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:var(--ink);font-weight:750}button.quiet{background:transparent;color:var(--muted)}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}input[type=text],input[type=date],textarea,select{width:100%;min-width:0;padding:10px 12px;border:1px solid #47566a;border-radius:8px;background:#111926;color:var(--text)}textarea{resize:vertical;line-height:1.7}label.field{display:flex;flex-direction:column;gap:7px;font-size:13px;color:#cbd5e1}.field small{font-size:11px;color:var(--muted)}[hidden]{display:none!important}.notice{border:1px solid var(--line);border-radius:10px;padding:12px 16px;background:#253549;font-size:13px;margin-bottom:20px}.status{font-size:13px;color:var(--accent);min-height:24px;overflow-wrap:anywhere}.share-panel{margin-top:20px;border:1px solid var(--line);background:var(--panel);padding:18px;border-radius:12px}.share-panel summary{cursor:pointer;font-size:14px}.share-panel .field{margin-top:14px}.share-panel input{font-size:12px}.share-panel .actions{margin-top:12px}footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;margin-top:28px;padding-bottom:32px}.pill{font-size:11px;padding:5px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted)}.cross-link{display:block;margin-top:26px;font-size:13px;color:var(--muted)}@media(max-width:650px){header,main,footer{padding-left:20px;padding-right:20px}header{padding-top:18px;padding-bottom:18px}main{padding-top:25px}.actions button{font-size:13px}footer{flex-direction:column;gap:8px}.brand{font-size:21px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s,border-color .15s}}