:root{color-scheme:light;--background: #ffffff;--surface: #f8f9fa;--surface-strong: #f1f3f5;--text-primary: #1a1a1a;--text-secondary: #6b7280;--border: #e5e7eb;--shadow-soft: 0 14px 40px rgba(15, 23, 42, .06);--shadow-hover: 0 18px 48px rgba(15, 23, 42, .1);--radius-lg: 24px;--radius-md: 18px;--radius-sm: 12px;--content-width: 1280px}*{box-sizing:border-box}body{margin:0;font-family:DM Sans,Noto Sans TC,sans-serif;background:linear-gradient(180deg,#fff,#fcfcfd);color:var(--text-primary)}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}#root{min-height:100vh}.page-shell{width:min(calc(100% - 64px),var(--content-width));margin:0 auto;padding:32px 0 64px}.app-header-shell{padding:12px 0;gap:16px}.app-brand{flex:0 0 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