:root{--bg: #f7f7f8;--surface: #ffffff;--text: #1c1c1f;--muted: #66666f;--border: #e2e2e6;--accent: #2f6fed;--accent-text: #ffffff;--success: #1f8a4c;--danger: #c4372b;--radius: 10px;--shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 2px 8px rgb(0 0 0 / 4%);color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #141416;--surface: #1d1d21;--text: #ececf0;--muted: #9b9ba6;--border: #2f2f36;--accent: #6b9bff;--accent-text: #0d1220;--success: #4cc584;--danger: #ff7a6e;--shadow: none;color-scheme:dark}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.6}main{flex:1;padding-block:32px}a{color:var(--accent)}h1{font-size:1.6rem;line-height:1.3;margin:0 0 8px}h2{font-size:1.15rem;margin:0 0 12px}.container{width:100%;max-width:960px;margin-inline:auto;padding-inline:16px}.muted{color:var(--muted)}.site-header{background:var(--surface);border-bottom:1px solid var(--border)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px}.site-header__brand{font-weight:700;color:var(--text);text-decoration:none}.site-header__nav{display:flex;align-items:center;gap:16px;font-size:.9rem}.site-header__nav a{color:var(--muted);text-decoration:none}.site-header__nav a:hover{color:var(--text)}.site-footer{border-top:1px solid var(--border);font-size:.85rem;color:var(--muted)}.site-footer__inner{padding-block:20px}.site-footer p{margin:4px 0}.site-footer a{color:inherit}select,input[type=number],input[type=text]{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:6px 8px}.btn{font:inherit;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;text-decoration:none}.btn:hover:not(:disabled){border-color:var(--muted)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}.btn--small{padding:4px 10px;font-size:.85rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hub-section+.hub-section{margin-top:32px}.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;padding:0;margin:0;list-style:none}.hub-card{display:flex;flex-direction:column;gap:6px;height:100%;padding:16px;color:inherit;text-decoration:none;transition:border-color .15s}.hub-card:hover{border-color:var(--accent)}.hub-card__icon{font-size:1.8rem;line-height:1}.hub-card__name{font-weight:700}.hub-card__desc{font-size:.9rem;color:var(--muted)}