body{margin:0;padding:0;font-family:Hiragino Sans,Yu Gothic UI,Yu Gothic,Meiryo,sans-serif;background:#f5f7fb;color:#172033}:root{--portal-bg: #f5f7fb;--portal-panel: #ffffff;--portal-panel-strong: #f9fbff;--portal-line: #dce3ee;--portal-line-soft: #edf1f6;--portal-text: #172033;--portal-text-muted: #667085;--portal-text-soft: #8b96a8;--portal-accent: #245ca8;--portal-accent-strong: #164783;--portal-accent-tint: #eaf2ff;--portal-on-accent: #ffffff;--portal-sidebar-width: 232px;--portal-sidebar-collapsed: 72px;--portal-topbar-height: 74px;--portal-shadow: 0 16px 44px rgba(35, 56, 92, .08)}:root[data-portal-theme=dark]{--portal-bg: #101722;--portal-panel: #171f2c;--portal-panel-strong: #1c2635;--portal-line: #293549;--portal-line-soft: #202b3b;--portal-text: #eef4ff;--portal-text-muted: #b3c0d2;--portal-text-soft: #7f8ba0;--portal-accent: #7ab7ff;--portal-accent-strong: #a5ccff;--portal-accent-tint: rgba(122, 183, 255, .13);--portal-on-accent: #08203a;--portal-shadow: 0 18px 50px rgba(0, 0, 0, .28)}.portal-shell{min-height:100vh;background:linear-gradient(135deg,rgba(36,92,168,.08),transparent 34rem),var(--portal-bg)}.portal-sidebar{position:fixed;inset:0 auto 0 0;width:var(--portal-sidebar-width);z-index:1030;display:flex;flex-direction:column;overflow:hidden;background:color-mix(in srgb,var(--portal-panel) 94%,transparent);border-right:1px solid var(--portal-line);box-shadow:8px 0 32px #1d2c470a;transition:width .22s ease}.portal-sidebar.is-collapsed{width:var(--portal-sidebar-collapsed)}.portal-sidebar__brand{min-height:var(--portal-topbar-height);display:flex;align-items:center;gap:10px;padding:14px 14px 12px 18px;border-bottom:1px solid var(--portal-line-soft)}.portal-brand{min-width:0;flex:1;display:flex;align-items:center;gap:10px;border:0;padding:0;background:transparent;color:var(--portal-text);font-size:12px;font-weight:700;text-align:left;white-space:nowrap;cursor:pointer}.portal-brand img{width:84px;height:auto;object-fit:contain}.portal-brand 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22px}.portal-nav__group{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}.portal-nav__heading{padding:8px 12px 4px;color:var(--portal-text-soft);font-size:11px;font-weight:700}.portal-nav__item{width:100%;min-height:36px;display:flex;align-items:center;gap:10px;border:1px solid transparent;border-radius:8px;padding:7px 12px;background:transparent;color:var(--portal-text-muted);font-size:13px;font-weight:600;text-align:left;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease}.portal-nav__item:hover{background:var(--portal-panel-strong);color:var(--portal-accent-strong)}.portal-nav__item.is-active{border-color:color-mix(in srgb,var(--portal-accent) 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h1{font-size:18px}.portal-topbar__eyebrow{display:none}.portal-content{margin-left:0;padding-inline:10px}.portal-theme-switch__icon{display:none}}.markdown-content{width:100%}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5,.markdown-content h6{margin-top:.5em;margin-bottom:.5em;font-weight:600;color:var(--text-light)}.markdown-content h1{font-size:1.5em}.markdown-content h2{font-size:1.3em}.markdown-content h3{font-size:1.1em}.markdown-content p{margin-bottom:.75em;color:var(--text-light)}.markdown-content p:last-child{margin-bottom:0}.markdown-content ul,.markdown-content ol{margin-left:1.5em;margin-bottom:.75em;color:var(--text-light)}.markdown-content a{color:#06c;text-decoration:underline}.markdown-content blockquote{border-left:3px solid var(--border-light);padding-left:1em;margin-left:0;color:var(--text-muted)}.markdown-content code{background-color:#f5f5f5;padding:.2em 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