@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Noto+Sans+TC:wght@400;500;700&display=swap";:root{--brand-50:#EFF4FA;--brand-100:#D8E4F2;--brand-200:#B3CBE5;--brand-300:#84AAD3;--brand-400:#5A8CC1;--brand-500:#3E74B0;--brand-600:#1B4F8A;--brand-700:#164070;--brand-800:#0F3462;--brand-900:#0A2647;--accent-50:#E7F6FB;--accent-500:#1699C6;--accent-600:#0F7FA6;--bg-app:#F5F7FA;--surface-card:#FFFFFF;--surface-sunken:#EDF1F6;--border-default:#E2E8F0;--border-strong:#C7D2DE;--text-primary:#1A2230;--text-secondary:#5A6675;--text-muted:#8A94A3;--text-inverse:#FFFFFF;--success-50:#E8F6EE;--success-500:#2E9E5B;--success-700:#1F7A45;--warning-50:#FBF3E2;--warning-500:#E0A02E;--warning-700:#9C6E1B;--danger-50:#FBECEC;--danger-500:#D14343;--danger-600:#B93838;--info-50:#EAF2F9;--info-500:#2E75B6;--badge-public-bg:#E8F6EE;--badge-public-fg:#1F7A45;--badge-public-border:#BFE5CF;--badge-private-bg:#EEF1F5;--badge-private-fg:#5A6675;--badge-private-border:#D5DCE4;--badge-removed-bg:#F3EFEA;--badge-removed-fg:#8A7B66;--badge-removed-border:#E0D6C8;--link:#0F7FA6;--link-hover:#0A6A8C;--focus-ring:rgba(27,79,138,.35)}:root{--font-sans:"Inter","Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,-apple-system,sans-serif;--font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--fs-h1:32px;--fs-h2:26px;--fs-h3:21px;--fs-h4:18px;--fs-body-lg:16px;--fs-body:15px;--fs-caption:13px;--fs-mini:12px;--fw-regular:400;--fw-medium:500;--fw-bold:700;--lh-tight:1.3;--lh-body:1.65}:root{--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:20px;--sp-6:24px;--sp-8:32px;--sp-10:40px;--sp-12:48px;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-full:999px;--shadow-sm:0 1px 2px rgba(15,42,74,.06);--shadow-md:0 2px 8px rgba(15,42,74,.08);--shadow-lg:0 8px 24px rgba(15,42,74,.14);--shadow-focus:0 0 0 3px var(--focus-ring)}body{margin:0;font-family:var(--font-sans);color:var(--text-primary);font-size:var(--fs-body);line-height:var(--lh-body)}a{color:var(--link);text-decoration:none}a:hover{color:var(--link-hover);text-decoration:underline}h1,h2,h3,h4{line-height:var(--lh-tight);margin:0}body{background:var(--bg-app);overflow-x:hidden}a{color:var(--link)}.bt-shell{display:grid;grid-template-columns:220px 1fr;min-height:calc(100vh - 60px);overflow-x:clip}.bt-sidebar{background:var(--surface-card);border-right:1px solid var(--border-default);padding-top:8px}.bt-main{padding:24px;max-width:1080px;width:100%;margin:0 auto;box-sizing:border-box}.bt-forum-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:20px;align-items:start}.bt-dash-areas{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.bt-dash-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.bt-area-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:16px;background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);cursor:pointer;font-family:var(--font-sans);text-align:left;transition:background .15s ease,border-color .15s ease}.bt-area-card:hover{background:var(--brand-50);border-color:var(--brand-300)}.bt-news-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}.bt-cases-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bt-footer{margin-top:32px;padding:18px 0 4px;border-top:1px solid var(--border-default);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--text-muted);font-size:12px}.bt-social-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.bt-social-links a{color:var(--text-secondary);text-decoration:none}.bt-social-links a:hover{color:var(--brand-600)}.bt-drawer-mask{display:none}@media(max-width:1100px){.bt-forum-grid{grid-template-columns:1fr}.bt-forum-aside{display:none}.bt-news-grid{grid-template-columns:1fr}}@media(max-width:960px){.bt-dash-areas{grid-template-columns:repeat(2,1fr)}.bt-dash-cols,.bt-cases-grid{grid-template-columns:1fr}}@media(max-width:860px){.bt-shell{grid-template-columns:1fr}.bt-sidebar{position:fixed;left:0;top:60px;bottom:0;width:240px;z-index:40;transform:translate(-100%);transition:transform .2s ease;box-shadow:var(--shadow-lg)}.bt-sidebar.open{transform:none}.bt-drawer-mask.open{display:block;position:fixed;right:0;bottom:0;left:0;top:60px;background:#0f2a4a59;z-index:30}.bt-menu-btn{display:inline-flex!important}.bt-login-side{display:none!important}}@media(max-width:600px){.bt-main{padding:16px}.bt-footer{align-items:flex-start;flex-direction:column}}