:root{--color-primary: #0066b3;--color-primary-dark: #004a9f;--color-primary-light: #e8f2fb;--color-text: #333333;--color-text-secondary: #666666;--color-text-muted: #999999;--color-border: #e5e8ee;--color-bg: #ffffff;--color-bg-gray: #f5f7fa;--color-topbar: #ffffff;--color-footer: #eaf4fd;--color-footer-text: #0b2545;--color-success: #52c41a;--color-danger: #ff4d4f;--color-warning: #faad14;--font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 40px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--header-top-height: 100px;--nav-height: 60px;--container-max: 1200px;--breakpoint-lg: 1200px;--breakpoint-md: 768px;--shadow-sm: 0 1px 4px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12)}*{margin:0;padding:0;box-sizing:border-box}html,body{min-height:100%}body{font-family:var(--font-family);font-size:14px;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}ul,ol{list-style:none}img{max-width:100%;display:block}button{font-family:inherit;border:none;background:none;cursor:pointer}input,textarea,select{font-family:inherit}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.4}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding-left:var(--spacing-md);padding-right:var(--spacing-md)}.line-clamp-1{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.line-clamp-2{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.line-clamp-3{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}.skeleton{position:relative;overflow:hidden;background-color:#eef1f5}.skeleton:after{content:"";position:absolute;inset:0;transform:translate(-100%);background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);animation:skeleton-shimmer 1.4s infinite}@keyframes skeleton-shimmer{to{transform:translate(100%)}}.article-body{font-size:15px;line-height:1.9;color:var(--color-text);word-break:break-word}.article-body img,.article-body video{max-width:100%;height:auto}.article-body p{margin-bottom:1em}.article-body h1,.article-body h2,.article-body h3,.article-body h4{margin:1em 0 .5em}.article-body ul,.article-body ol{margin:0 0 1em;padding-left:1.5em}.article-body ul{list-style:disc}.article-body ol{list-style:decimal}.article-body a{color:var(--color-primary);text-decoration:underline}.article-body table{width:100%;border-collapse:collapse;margin-bottom:1em}.article-body th,.article-body td{border:1px solid var(--color-border);padding:6px 10px}