.topic-directory-main { padding: 36px 0 46px; background: #f6f9fc; }
.topic-directory-intro { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.topic-directory-intro h2 { margin: 0 0 8px; font-size: 25px; color: #0a2948; }
.topic-directory-intro p { margin: 0; font-size: 15px; color: #62768b; line-height: 1.8; }
.topic-directory-stats { display: flex; gap: 26px; color: #62768b; font-size: 14px; white-space: nowrap; }
.topic-directory-stats strong { display: block; margin-bottom: 4px; color: #0966bf; font-size: 29px; }
.topic-group-nav { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 26px; }
.topic-group-nav a { display: inline-flex; align-items: center; gap: 10px; padding: 10px 15px; border: 1px solid #d9e6f3; border-radius: 5px; background: #fff; color: #164c80; font-size: 14px; line-height: 1.6; }
.topic-group-nav a span { color: #6b86a1; font-size: 14px; }
.topic-group-list { display: grid; gap: 20px; }
.topic-group { padding: 24px; border: 1px solid #dfe8f1; border-radius: 8px; background: #fff; scroll-margin-top: 95px; }
.topic-group-heading { display: flex; justify-content: space-between; align-items: start; gap: 18px; margin-bottom: 19px; }
.topic-group-heading h2 { margin: 0 0 7px; padding-left: 12px; border-left: 3px solid #146dd1; color: #0a2948; font-size: 21px; line-height: 1.4; }
.topic-group-heading p { margin: 0; color: #687c90; font-size: 15px; line-height: 1.8; }
.topic-group-heading > span { padding-top: 4px; color: #7890a6; font-size: 14px; white-space: nowrap; }
.topic-link-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; }
.topic-link { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border: 1px solid #e1ebf6; border-radius: 5px; background: #f7faff; color: #174f82; font-size: 15px; line-height: 1.65; }
.topic-link > span { min-width: 0; overflow-wrap: anywhere; }
.topic-link em { flex-shrink: 0; color: #7890a6; font-style: normal; font-size: 14px; }
.topic-link:hover, .topic-group-nav a:hover { border-color: #2378cf; background: #edf5ff; color: #075cab; }
.topic-directory-back { margin-top: 25px; text-align: center; }
.topic-directory-back a { display: inline-block; padding: 11px 24px; border: 1px solid #c9def4; border-radius: 5px; background: #fff; color: #0860b6; font-size: 15px; }
.article-list-page .all-topic-tags-link { display: inline-block; margin-top: 15px; color: #0764bd; font-size: 14px; line-height: 1.6; font-weight: 700; }
@media(max-width:1100px) { .topic-link-grid { grid-template-columns:repeat(3,minmax(0,1fr)); } }
@media(max-width:767px) {
 .topic-directory-main { padding: 24px 0 30px; }
 .topic-directory-intro { align-items: start; flex-direction: column; gap: 16px; }
 .topic-directory-intro h2 { font-size: 22px; }
 .topic-directory-stats { gap: 28px; }
 .topic-directory-stats strong { display: inline; margin-right: 5px; font-size: 23px; }
 .topic-group-nav { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; margin-bottom: 18px; }
 .topic-group-nav a { flex: 0 0 auto; }
 .topic-group { padding: 18px 15px; }
 .topic-group-heading { margin-bottom: 14px; }
 .topic-group-heading h2 { font-size: 19px; }
 .topic-group-heading p { font-size: 14px; }
 .topic-link-grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap: 8px; }
 .topic-link { padding: 10px; gap: 6px; font-size: 14px; }
 .topic-link em { font-size: 14px; }
}
@media(max-width:380px) { .topic-link-grid { grid-template-columns:minmax(0,1fr); } }