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/* 新版内容发现布局：仅调整信息密度与节奏，保留原天空蓝色板。 */
.section-var-1 .article-card:first-child{border-top:4px solid #48BAF1}.section-var-2 .article-card:nth-child(2){background:#E9F8FF}.section-var-3 .article-card:last-child{border-bottom:4px solid #7BC7B4}.hero-content h1{letter-spacing:-.035em}.section-block>.module-title h2{letter-spacing:-.025em}.topic-item:hover{box-shadow:0 9px 26px #14344F12}.article-card p{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}@media(max-width:650px){.section-var-2 .article-card:nth-child(2){background:#fff}}

/* 51吃瓜APP：全新排版节奏；保留原有 SKY 蓝色变量和图片路径。 */
.hero-content h1{max-width:12em;letter-spacing:-.042em}.hero-content p{max-width:34em}.section-block .module-title{border-bottom:1px solid var(--border);padding-bottom:13px}.section-block:nth-of-type(4n) .article-card:first-child{border-top:4px solid var(--sky)}.topic-item{transition:transform .2s ease,box-shadow .2s ease}.topic-item:hover{transform:translateY(-2px);box-shadow:0 12px 32px #14344F14}.quick-nav a{font-weight:700}@media(max-width:700px){.hero-content h1{max-width:none}.topic-item:hover{transform:none}}