.about-scope{--color-primary:#0D9488;--color-primary-hover:#0F766E;--color-primary-active:#115E59;--color-primary-light:#CCFBF1;--color-primary-lighter:#F0FDFA;--color-primary-dark:#134E4A;--color-accent:#F97316;--color-accent-hover:#EA580C;--color-accent-light:#FFEDD5;--color-bg:#FAFAF9;--color-surface:#FFFFFF;--color-surface-alt:#F5F5F4;--color-surface-hover:#F5F5F4;--color-surface-selected:#F0FDFA;--color-border:#E7E5E4;--color-border-strong:#D6D3D1;--color-text-primary:#1C1917;--color-text-secondary:#57534E;--color-text-tertiary:#57534E;--color-text-disabled:#A8A29E;--color-text-inverse:#FFFFFF;--color-success:#10B981;--color-success-light:#D1FAE5;--color-success-dark:#065F46;--color-warning:#F59E0B;--color-warning-light:#FEF3C7;--color-warning-dark:#92400E;--color-danger:#EF4444;--color-danger-light:#FEE2E2;--color-danger-dark:#991B1B;--color-info:#3B82F6;--color-info-light:#DBEAFE;--color-info-dark:#1E40AF;--color-sidebar-bg:#1C1917;--color-sidebar-surface:#292524;--color-sidebar-border:#44403C;--color-sidebar-text:#E7E5E4;--color-sidebar-text-muted:#A8A29E;--color-sidebar-text-disabled:#78716C;--color-sidebar-active-bg:#0D9488;--color-sidebar-active-text:#FFFFFF;--color-sidebar-hover-bg:rgba(255,255,255,0.06);--color-sidebar-group-label:#78716C;--color-topbar-bg:#FFFFFF;--color-topbar-border:#E7E5E4;--font-body:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--font-heading:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--font-numeric:'Inter','Noto Sans SC',system-ui,sans-serif;--font-mono:'JetBrains Mono','Fira Code','SF Mono',Consolas,monospace;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--space-3xs:2px;--space-2xs:4px;--space-xs:8px;--space-sm:12px;--space-md:16px;--space-lg:20px;--space-xl:24px;--space-2xl:32px;--space-3xl:48px;--shadow-none:none;--shadow-xs:0 1px 2px rgba(28,25,23,0.04);--shadow-sm:0 1px 3px rgba(28,25,23,0.06),0 1px 2px rgba(28,25,23,0.04);--shadow-md:0 4px 8px rgba(28,25,23,0.06),0 2px 4px rgba(28,25,23,0.04);--shadow-lg:0 8px 24px rgba(28,25,23,0.08),0 4px 8px rgba(28,25,23,0.04);--shadow-xl:0 16px 48px rgba(28,25,23,0.10),0 8px 16px rgba(28,25,23,0.06);--shadow-2xl:0 24px 64px rgba(28,25,23,0.14);--sidebar-width:240px;--sidebar-width-collapsed:64px;--topbar-height:56px;--content-max-width:1440px;--content-padding:24px;--drawer-width:480px;--z-base:0;--z-sticky-table:1;--z-topbar:150;--z-sidebar:200;--z-dropdown:300;--z-drawer:310;--z-modal:400;--z-command:500;--z-toast:600;font-family:var(--font-body);font-size:14px;line-height:1.6;color:var(--color-text-primary);background:var(--color-surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.about-scope *{margin:0;padding:0;box-sizing:border-box}.about-scope a{text-decoration:none;color:inherit}.about-scope button{font-family:var(--font-body)}.about-scope img,.about-scope svg{display:block}.about-scope .numeric{font-family:var(--font-numeric);font-variant-numeric:tabular-nums;font-feature-settings:'tnum' 1,'lnum' 1}.about-scope .btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--color-primary);color:var(--color-text-inverse);border:none;border-radius:var(--radius-md);padding:9px 18px;font-size:14px;font-weight:600;line-height:1.4;cursor:pointer;transition:all 0.12s ease;white-space:nowrap;font-family:var(--font-body)}.about-scope .btn-primary:hover{background:var(--color-primary-hover);box-shadow:var(--shadow-md)}.about-scope .btn-primary:active{background:var(--color-primary-active);transform:translateY(1px)}.about-scope .btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--color-bg);color:var(--color-text-primary);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);padding:9px 18px;font-size:14px;font-weight:500;line-height:1.4;cursor:pointer;transition:all 0.12s ease;white-space:nowrap;font-family:var(--font-body)}.about-scope .btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-primary-lighter)}.about-scope .btn-accent{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--color-accent);color:var(--color-text-inverse);border:none;border-radius:var(--radius-md);padding:9px 18px;font-size:14px;font-weight:600;line-height:1.4;cursor:pointer;transition:all 0.12s ease;white-space:nowrap;font-family:var(--font-body)}.about-scope .btn-accent:hover{background:var(--color-accent-hover);box-shadow:var(--shadow-md)}.about-scope .tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--radius-sm);font-size:12px;font-weight:500;background:var(--color-surface-alt);color:var(--color-text-secondary)}.about-scope .site-header{position:sticky;top:0;z-index:var(--z-topbar);height:var(--topbar-height);background:var(--color-topbar-bg);border-bottom:1px solid var(--color-topbar-border)}.about-scope .site-header-inner{max-width:var(--content-max-width);height:100%;margin:0 auto;padding:0 var(--space-xl);display:flex;align-items:center;gap:var(--space-lg)}.about-scope .site-logo{display:inline-flex;align-items:center;gap:var(--space-xs);font-weight:600;color:var(--color-text-primary);font-size:15px;flex-shrink:0}.about-scope .site-logo .logo-mark{width:28px;height:28px;border-radius:var(--radius-md);background:var(--color-primary);color:var(--color-text-inverse);display:inline-flex;align-items:center;justify-content:center}.about-scope .site-nav{display:flex;align-items:center;gap:var(--space-xs)}.about-scope .site-nav-link{padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-md);font-size:14px;color:var(--color-text-secondary);text-decoration:none;transition:all .12s ease}.about-scope .site-nav-link:hover{background:var(--color-surface);color:var(--color-primary)}.about-scope .site-nav-link.active{color:var(--color-primary);font-weight:600}.about-scope .site-actions{margin-left:auto;display:flex;align-items:center;gap:var(--space-sm)}.about-scope .site-actions .btn-ghost{color:var(--color-text-secondary)}.about-scope .site-hamburger{display:none}.about-scope .site-drawer-overlay{position:fixed;inset:0;background:rgba(28,25,23,0.3);z-index:var(--z-drawer);opacity:0;pointer-events:none;transition:opacity .2s ease}.about-scope .site-drawer-overlay.open{opacity:1;pointer-events:auto}.about-scope .site-drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:82vw;background:var(--color-bg);z-index:var(--z-drawer);transform:translateX(100%);transition:transform .25s cubic-bezier(0.4,0,0.2,1);display:flex;flex-direction:column;box-shadow:var(--shadow-2xl)}.about-scope .site-drawer.open{transform:translateX(0)}.about-scope .site-drawer-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--color-border)}.about-scope .site-drawer-nav{display:flex;flex-direction:column;gap:4px;padding:var(--space-md)}.about-scope .site-drawer-link{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:14px;color:var(--color-text-secondary)}.about-scope .site-drawer-link:hover,.about-scope .site-drawer-link.active{background:var(--color-surface);color:var(--color-primary)}.about-scope .site-drawer-actions{margin-top:auto;padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-sm);border-top:1px solid var(--color-border)}.about-scope .site-footer{width:100%;background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--space-3xl) 0 var(--space-xl);margin-top:var(--space-3xl)}.about-scope .site-footer-inner{max-width:var(--content-max-width);margin:0 auto;padding:0 var(--space-xl);display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:var(--space-2xl)}.about-scope .footer-brand .site-logo{margin-bottom:var(--space-sm)}.about-scope .footer-slogan{font-size:13px;color:var(--color-text-tertiary);max-width:280px;line-height:1.6}.about-scope .footer-col-title{font-size:14px;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--space-sm)}.about-scope .footer-link{display:block;font-size:13px;color:var(--color-text-secondary);text-decoration:none;padding:4px 0}.about-scope .footer-link:hover{color:var(--color-primary)}.about-scope .footer-bottom{max-width:var(--content-max-width);margin:var(--space-2xl) auto 0;padding:var(--space-lg) var(--space-xl) 0;border-top:1px solid var(--color-border);display:flex;justify-content:space-between;gap:var(--space-md);font-size:12px;color:var(--color-text-tertiary);flex-wrap:wrap}.about-scope .container{max-width:var(--content-max-width);margin:0 auto;padding:0 var(--space-xl)}.about-scope .breadcrumb{display:flex;align-items:center;gap:var(--space-xs);font-size:13px;margin-bottom:var(--space-lg)}.about-scope .breadcrumb-item{color:var(--color-text-tertiary);cursor:pointer;transition:color 0.12s ease}.about-scope .breadcrumb-item:hover{color:var(--color-primary)}.about-scope .breadcrumb-item.current{color:var(--color-text-primary);font-weight:500}.about-scope .breadcrumb-separator{color:var(--color-text-tertiary);font-size:12px}.about-scope .section{padding:var(--space-3xl) 0}.about-scope .section-alt{background:var(--color-surface);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.about-scope .section-head{text-align:center;max-width:680px;margin:0 auto var(--space-2xl)}.about-scope .section-eyebrow{display:inline-block;color:var(--color-primary);font-size:13px;font-weight:600;letter-spacing:0.04em;margin-bottom:var(--space-sm)}.about-scope .section-title{font-size:24px;font-weight:700;color:var(--color-text-primary);letter-spacing:-0.02em}.about-scope .section-subtitle{font-size:15px;color:var(--color-text-secondary);margin-top:var(--space-sm);line-height:1.6}.about-scope .page-head{padding:var(--space-3xl) 0;background:linear-gradient(180deg,var(--color-primary-lighter),var(--color-bg));border-bottom:1px solid var(--color-border)}.about-scope .page-head-inner{max-width:var(--content-max-width);margin:0 auto;padding:0 var(--space-xl)}.about-scope .page-title{font-size:32px;font-weight:700;color:var(--color-text-primary);letter-spacing:-0.02em}.about-scope .page-subtitle{font-size:16px;color:var(--color-text-secondary);margin-top:var(--space-md);max-width:680px;line-height:1.7}.about-scope .intro-text{max-width:820px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--color-text-secondary)}.about-scope .intro-text p{margin-bottom:var(--space-md)}.about-scope .card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}.about-scope .info-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-xl);transition:box-shadow .15s ease,border-color .15s ease}.about-scope .info-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-strong)}.about-scope .info-card-icon{width:44px;height:44px;border-radius:var(--radius-md);background:var(--color-primary-light);color:var(--color-primary);display:inline-flex;align-items:center;justify-content:center;margin-bottom:var(--space-md)}.about-scope .info-card-title{font-size:16px;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--space-xs)}.about-scope .info-card-desc{font-size:14px;color:var(--color-text-secondary);line-height:1.7}.about-scope .timeline{position:relative;margin-left:8px;max-width:820px;margin-right:auto;margin-left:auto}.about-scope .timeline::before{content:'';position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--color-border)}.about-scope .timeline-item{position:relative;padding-left:var(--space-2xl);padding-bottom:var(--space-2xl)}.about-scope .timeline-item:last-child{padding-bottom:0}.about-scope .timeline-dot{position:absolute;left:0;top:4px;width:16px;height:16px;border-radius:var(--radius-full);background:var(--color-primary);border:3px solid var(--color-primary-lighter);box-sizing:border-box}.about-scope .timeline-date{font-family:var(--font-numeric);font-size:13px;font-weight:700;color:var(--color-primary-dark)}.about-scope .timeline-title{font-size:16px;font-weight:600;color:var(--color-text-primary);margin:4px 0 6px}.about-scope .timeline-desc{font-size:14px;color:var(--color-text-secondary);line-height:1.7}.about-scope .stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}.about-scope .stat-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-2xl);text-align:center;transition:border-color .12s ease}.about-scope .stat-card:hover{border-color:var(--color-border-strong)}.about-scope .stat-value{font-family:var(--font-numeric);font-size:36px;font-weight:700;color:var(--color-primary);letter-spacing:-0.02em;line-height:1.1}.about-scope .stat-value .unit{font-size:18px;margin-left:2px}.about-scope .stat-label{font-size:14px;color:var(--color-text-secondary);margin-top:var(--space-xs)}.about-scope .mb-2{margin-bottom:var(--space-xs)}.about-scope .mb-3{margin-bottom:var(--space-sm)}.about-scope .flex{display:flex}.about-scope .items-center{align-items:center}.about-scope .text-secondary{color:var(--color-text-secondary)}@media (max-width:1023px){.about-scope .card-grid-3,.about-scope .stat-grid{grid-template-columns:1fr}}@media (max-width:768px){.about-scope .site-nav,.about-scope .site-actions .btn:not(.btn-accent){display:none}.about-scope .site-hamburger{display:inline-flex}.about-scope .site-footer-inner{grid-template-columns:1fr 1fr}.about-scope .page-title{font-size:26px}}@media (min-width:768px) and (max-width:1023px){.about-scope .site-footer-inner{grid-template-columns:1.5fr repeat(2,1fr)}}@media (min-width:1024px){.about-scope .site-footer-inner{grid-template-columns:1.5fr repeat(4,1fr)}}.about-scope .btn-sm{padding:6px 12px;font-size:13px;line-height:1.4}