.subpage-main { padding: 14px 0 24px; }
.sub-hero { position: relative; height: 230px; overflow: hidden; border: 1px solid var(--line); border-radius: 6px; background: #0b0c0d; box-shadow: 0 16px 36px var(--shadow); }
.sub-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center right; }
.sub-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg,rgba(6,7,8,.96) 0%,rgba(6,7,8,.78) 42%,rgba(6,7,8,.16) 75%,rgba(6,7,8,.05)); }
.sub-hero-copy { position: relative; z-index: 2; height: 100%; padding: 35px 44px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; }
.sub-hero-copy h1 { margin: 0; color: var(--accent-light); font-size: clamp(36px,4vw,55px); line-height: 1.05; text-shadow: 0 4px 20px #000; }
.sub-hero-copy strong { margin-top: 14px; color: #e7b75f; font-size: 17px; letter-spacing: 5px; }
.sub-hero-copy p { margin: 12px 0 0; color: #c2bbb1; font-size: 13px; letter-spacing: 3px; }
.metric-strip { min-height: 82px; margin-top: 12px; display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.metric-strip.five { grid-template-columns: repeat(5,1fr); }
.metric-item { min-width: 0; display: flex; align-items: center; justify-content: center; gap: 12px; border-right: 1px solid var(--line-soft); }
.metric-item:last-child { border-right: 0; }
.metric-icon { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--gold-deep); border-radius: 7px; color: var(--gold); background: var(--accent-soft); font-size: 16px; font-weight: 900; }
.metric-item strong, .metric-item small { display: block; }
.metric-item strong { font-size: 14px; }
.metric-item small { margin-top: 4px; color: var(--muted); font-size: 11px; }
.section-panel { min-width: 0; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); box-shadow: 0 10px 28px var(--shadow); }
.panel-heading { min-height: 52px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line-soft); }
.panel-heading h2 { margin: 0; font-size: 15px; }
.panel-heading a, .panel-heading span { color: var(--muted); font-size: 11px; }
.category-pills { display: flex; align-items: center; gap: 7px; overflow-x: auto; scrollbar-width: none; }
.category-pills::-webkit-scrollbar { display: none; }
.category-pills button { height: 29px; padding: 0 11px; flex: 0 0 auto; border: 0; border-radius: 4px; color: var(--muted); background: var(--control); font-size: 11px; }
.category-pills button.active, .category-pills button:hover { color: var(--accent-contrast); background: var(--gold); font-weight: 900; }
.subpage-empty { padding: 34px; color: var(--muted); text-align: center; }

.tools-layout { margin-top: 12px; display: grid; grid-template-columns: 180px minmax(0,1fr) 250px; gap: 12px; align-items: start; }
.category-sidebar { padding-bottom: 12px; }
.category-sidebar h2 { margin: 0; padding: 17px 15px; border-bottom: 1px solid var(--line); font-size: 14px; }
.side-category { width: calc(100% - 16px); height: 40px; margin: 8px 8px 0; padding: 0 12px; display: flex; align-items: center; justify-content: space-between; border: 0; border-radius: 4px; color: var(--muted); background: transparent; font-size: 12px; text-align: left; }
.side-category::after { content: "›"; opacity: .5; }
.side-category:hover, .side-category.active { color: var(--gold); background: var(--accent-soft); }
.tool-content { overflow: hidden; }
.tool-filter { min-height: 48px; padding: 0 15px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line-soft); }
.tool-filter h2 { margin: 0; font-size: 14px; }
.tool-grid { padding: 15px; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.tool-card { min-width: 0; min-height: 205px; padding: 17px 13px 13px; display: flex; flex-direction: column; align-items: center; border: 1px solid var(--line-soft); border-radius: 6px; background: var(--panel-soft); text-align: center; transition: transform .16s ease,border-color .16s ease; }
.tool-card:hover { transform: translateY(-2px); border-color: var(--gold-deep); }
.tool-card[hidden] { display: none; }
.tool-card-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 11px; color: #fff; background: linear-gradient(145deg,var(--gold),var(--gold-deep)); box-shadow: 0 8px 20px var(--accent-soft); font-size: 19px; font-weight: 900; }
.tool-card h3 { margin: 12px 0 6px; font-size: 14px; }
.tool-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.65; }
.tool-card-meta { width: 100%; margin-top: auto; padding-top: 12px; display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; }
.tool-card a { width: 76px; height: 29px; margin-top: 9px; display: grid; place-items: center; border-radius: 4px; color: var(--accent-contrast); background: var(--gold); font-size: 11px; font-weight: 900; }
.tools-aside { display: grid; gap: 12px; }
.mini-list { margin: 0; padding: 4px 14px 12px; list-style: none; }
.mini-list li { min-width: 0; display: grid; grid-template-columns: 23px minmax(0,1fr) auto; align-items: center; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--line-soft); }
.mini-list li:last-child { border-bottom: 0; }
.mini-list b { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 4px; color: var(--accent-contrast); background: var(--gold); font-size: 11px; }
.mini-list span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.mini-list small { color: var(--muted); font-size: 10px; }
.aside-ad { min-height: 170px; display: grid; place-items: center; border: 1px solid #443051; border-radius: 6px; color: #d9c9e9; background: linear-gradient(145deg,#1b1124,#3d2251); text-align: center; }
.aside-ad strong, .aside-ad small { display: block; }
.aside-ad strong { font-size: 17px; }
.aside-ad small { margin-top: 8px; font-size: 11px; }
.help-panel { margin-top: 12px; }
.help-grid { padding: 14px; display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.help-grid a { min-height: 58px; padding: 11px 13px; display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line-soft); border-radius: 5px; background: var(--panel-soft); }
.help-grid strong, .help-grid small { display: block; }
.help-grid strong { font-size: 12px; }
.help-grid small { margin-top: 4px; color: var(--muted); font-size: 10px; }
.help-grid b { color: var(--gold); font-size: 11px; }

.academy-layout, .forum-layout { margin-top: 12px; display: grid; grid-template-columns: minmax(0,1fr) 275px; gap: 12px; align-items: start; }
.course-toolbar { min-height: 56px; padding: 10px 15px; display: flex; align-items: center; gap: 15px; border-bottom: 1px solid var(--line-soft); }
.course-toolbar h2 { margin: 0; font-size: 15px; white-space: nowrap; }
.course-grid { padding: 15px; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 13px; }
.course-card { min-width: 0; overflow: hidden; border: 1px solid var(--line-soft); border-radius: 6px; background: var(--panel-soft); }
.course-card[hidden] { display: none; }
.course-cover { position: relative; height: 112px; overflow: hidden; background: var(--panel-deep); }
.course-cover img { width: 100%; height: 100%; object-fit: cover; filter: brightness(.7) saturate(.82); }
.play-mark { position: absolute; inset: 50% auto auto 50%; width: 36px; height: 36px; display: grid; place-items: center; padding-left: 2px; transform: translate(-50%,-50%); border: 1px solid rgba(255,255,255,.58); border-radius: 50%; color: #fff; background: rgba(0,0,0,.58); }
.course-card-body { padding: 11px; }
.course-card h3 { margin: 0; overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.course-card p { margin: 6px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.course-card-meta { margin-top: 10px; display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; }
.course-card-meta b { color: var(--gold); }
.academy-aside, .forum-aside { display: grid; gap: 12px; }
.notice-list, .teacher-list, .forum-rank { margin: 0; padding: 5px 13px 12px; list-style: none; }
.notice-list li { min-width: 0; display: grid; grid-template-columns: 44px minmax(0,1fr); gap: 7px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); font-size: 11px; }
.notice-list time { color: var(--muted); }
.notice-list a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.teacher-list li { display: grid; grid-template-columns: 35px minmax(0,1fr) auto; align-items: center; gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.teacher-avatar { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: var(--accent-contrast); background: var(--gold); font-size: 11px; font-weight: 900; }
.teacher-list strong, .teacher-list small { display: block; }
.teacher-list strong { font-size: 11px; }
.teacher-list small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.teacher-list em { color: var(--gold); font-size: 10px; font-style: normal; }
.learning-panel { margin-top: 12px; }
.learning-grid { padding: 15px; display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.learning-card { padding: 14px; border: 1px solid var(--line-soft); border-radius: 5px; background: var(--panel-soft); }
.learning-card h3 { margin: 0 0 9px; color: var(--gold); font-size: 12px; }
.learning-card ol { margin: 0; padding-left: 19px; color: var(--muted); font-size: 11px; line-height: 2; }

.forum-toolbar { min-height: 54px; padding: 9px 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line-soft); }
.forum-toolbar h2 { margin: 0; font-size: 15px; }
.forum-toolbar a { height: 30px; padding: 0 12px; display: grid; place-items: center; border-radius: 4px; color: var(--accent-contrast); background: var(--gold); font-size: 11px; font-weight: 900; }
.forum-filter { padding: 10px 14px; border-bottom: 1px solid var(--line-soft); }
.topic-list { padding: 0 14px 8px; }
.topic-row { min-width: 0; min-height: 74px; display: grid; grid-template-columns: 30px minmax(0,1fr) 125px; align-items: center; gap: 11px; border-bottom: 1px solid var(--line-soft); }
.topic-row[hidden] { display: none; }
.topic-type { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 5px; color: var(--accent-contrast); background: var(--gold); font-size: 11px; font-weight: 900; }
.topic-main { min-width: 0; }
.topic-main h3 { margin: 0; overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.topic-main p { margin: 6px 0 0; color: var(--muted); font-size: 11px; }
.topic-stats { display: grid; grid-template-columns: repeat(3,1fr); color: var(--muted); font-size: 10px; text-align: center; }
.topic-stats strong { display: block; margin-bottom: 3px; color: var(--text); font-size: 11px; }
.forum-section-list { padding: 4px 12px 12px; display: grid; gap: 7px; }
.forum-section-list a { min-height: 45px; padding: 8px 10px; display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line-soft); border-radius: 4px; background: var(--panel-soft); }
.forum-section-list strong, .forum-section-list small { display: block; }
.forum-section-list strong { font-size: 11px; }
.forum-section-list small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.forum-section-list b { color: var(--gold); font-size: 11px; }
.forum-rank li { display: grid; grid-template-columns: 22px minmax(0,1fr) auto; gap: 7px; padding: 8px 0; border-bottom: 1px solid var(--line-soft); font-size: 11px; }
.forum-rank b { color: var(--gold); }
.forum-rank span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.forum-rank small { color: var(--muted); }
.tag-cloud { padding: 10px 12px 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.tag-cloud a { padding: 5px 8px; border-radius: 3px; color: var(--muted); background: var(--control); font-size: 10px; }
.recommended-panel { margin-top: 12px; }
.recommended-list { padding: 12px 14px; display: grid; gap: 8px; }
.recommended-item { min-height: 62px; display: grid; grid-template-columns: 92px minmax(0,1fr) auto; align-items: center; gap: 11px; border-bottom: 1px solid var(--line-soft); }
.recommended-item img { width: 90px; height: 50px; border-radius: 4px; object-fit: cover; filter: brightness(.72); }
.recommended-item strong, .recommended-item small { display: block; }
.recommended-item strong { font-size: 12px; }
.recommended-item small { margin-top: 5px; color: var(--muted); font-size: 10px; }
.recommended-item b { color: var(--gold); font-size: 11px; }

.subpage-footer { margin-top: 14px; border-top: 1px solid var(--line); background: var(--panel-deep); }
.subpage-footer-inner { min-height: 112px; display: grid; grid-template-columns: 260px 1fr auto; align-items: center; gap: 25px; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand strong, .footer-brand small { display: block; }
.footer-brand strong { color: var(--gold); font-size: 14px; }
.footer-brand small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.subpage-footer nav { display: flex; justify-content: center; gap: 25px; }
.subpage-footer nav a { color: var(--muted); font-size: 11px; }
.subpage-footer > div > small { color: var(--muted); font-size: 10px; }

@media (max-width: 1120px) {
  .tools-layout { grid-template-columns: 165px minmax(0,1fr); }
  .tools-aside { grid-column: 1 / -1; grid-template-columns: repeat(3,1fr); }
  .course-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 820px) {
  .sub-hero { height: 210px; }
  .sub-hero-copy { padding: 28px 22px; }
  .metric-strip, .metric-strip.five { grid-template-columns: repeat(2,1fr); padding: 10px 0; gap: 10px 0; }
  .metric-item:nth-child(2n) { border-right: 0; }
  .tools-layout, .academy-layout, .forum-layout { grid-template-columns: 1fr; }
  .category-sidebar { display: none; }
  .tool-grid, .course-grid { grid-template-columns: repeat(2,1fr); }
  .tools-aside { grid-template-columns: 1fr; }
  .help-grid, .learning-grid { grid-template-columns: 1fr; }
  .subpage-footer-inner { grid-template-columns: 1fr; padding: 24px 0; text-align: center; }
  .footer-brand { justify-content: center; }
}
@media (max-width: 560px) {
  .sub-hero-copy h1 { font-size: 32px; }
  .sub-hero-copy strong { font-size: 13px; letter-spacing: 2px; }
  .sub-hero-copy p { letter-spacing: 1px; }
  .tool-grid, .course-grid { grid-template-columns: 1fr; }
  .topic-row { grid-template-columns: 28px minmax(0,1fr); }
  .topic-stats { display: none; }
  .recommended-item { grid-template-columns: 72px minmax(0,1fr); }
  .recommended-item img { width: 70px; height: 44px; }
  .recommended-item b { display: none; }
}