.article-intro{padding:24px;background:#f4f8ff;border-radius:16px}.card-group{display:grid;gap:20px;margin:32px 0}.card{padding:24px;background:#f7faff;border-radius:18px}.final-box{margin-top:32px;padding:28px;background:linear-gradient(180deg,#eaf2ff,#dde9ff);border-radius:20px}.final-conclusion{margin-top:24px;padding:32px;border-radius:24px;background:linear-gradient(180deg,#eaf2ff,#dce9ff)}.final-conclusion p{margin-bottom:16px}.final-accent{font-weight:600}