:root {
  --ink: #0a0f1a;
  --blue: #1f3cff;
  --blue2: #eef2ff;
  --tx: #0a0f1a;
  --tx2: #5d667a;
  --tx3: #8a94a6;
  --line: #dfe3ec;
  --bg: #fff;
  --soft: #f7f8fc;
}

.catalog-page { color: var(--ink); background: #fff; }
.catalog-page .site-header { height: 80px; border-bottom: 0; background: rgba(255,255,255,.98); backdrop-filter: blur(16px); }
.catalog-page .header-shell { width: min(calc(100% - 48px),1248px); height: 80px; }
.catalog-page .header-brand { width: 120px; }
.catalog-page .desktop-nav { justify-content: center; gap: 30px; margin-left: 0; }
.catalog-page .desktop-nav a,
.catalog-page .header-actions .cta { font-size: 14px; font-weight: 600; }
.catalog-page .header-start,
.catalog-page .lgbtn { border-radius: 999px; background: var(--blue); }
.catalog-page .hero { max-width: 1248px; margin: 0 auto; padding: 88px 0 64px; }
.catalog-page .catalog-kicker { display: block; margin-bottom: 14px; color: var(--blue); font-family: Poppins,"PingFang SC",sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 1px; }
.catalog-page .hero h1 { max-width: 900px; margin: 0; color: var(--ink); font-size: clamp(40px,4.2vw,52px); line-height: 1.25; font-weight: 700; letter-spacing: -.7px; }
.catalog-page .catalog-lead { margin: 16px 0 0; color: var(--tx2); font-size: 18px; line-height: 1.7; }
.catalog-page .filter-band { background: var(--soft); }
.catalog-page .filter-shell { width: min(calc(100% - 48px),1248px); margin: 0 auto; padding: 28px 0; }
.catalog-page .category-filter { margin: 0; display: block; }
.catalog-page .category-label { display: block; padding: 0; margin-bottom: 14px; color: var(--ink); font-size: 14px; font-weight: 600; }
.catalog-page .category-tabs { gap: 10px; }
.catalog-page .category-tab { min-height: 40px; padding: 0 18px; border-color: var(--line); border-radius: 999px; font-size: 14px; font-weight: 600; }
.catalog-page .category-tab.on { border-color: var(--blue); background: var(--blue); }
.catalog-page .wrap { max-width: 1248px; padding: 68px 0 88px; }
.catalog-page .wrap::before { display: block; margin-bottom: 28px; color: var(--ink); font-size: 30px; font-weight: 700; content: attr(data-results-title); }
.catalog-page .grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.catalog-page .card { min-height: 500px; border-color: var(--line); border-radius: 20px; box-shadow: none; }
.catalog-page .card:hover { transform: translateY(-3px); border-color: #b8c4ff; box-shadow: 0 18px 44px rgba(10,15,26,.08); }
.catalog-page .cover { aspect-ratio: 16/9; }
.catalog-page .cover .cat { left: 16px; top: 16px; color: var(--blue); border-radius: 999px; }
.catalog-page .body { padding: 24px; }
.catalog-page .title { font-size: 21px; font-weight: 600; line-height: 1.45; }
.catalog-page .sub { margin-top: 12px; color: var(--tx2); font-size: 14px; line-height: 1.7; }
.catalog-page .tag { color: var(--blue); border-radius: 999px; background: var(--blue2); }
.catalog-page .foot { margin-top: 20px; }
.catalog-page .price { color: var(--blue); font-size: 21px; }
.catalog-page .go { padding: 8px 14px; color: var(--blue); border: 1px solid var(--blue); border-radius: 999px; background: #fff; }
.catalog-page .skel { height: 500px; border-radius: 20px; }
.catalog-page .state { grid-column: 1/-1; padding: 80px 24px; border-radius: 20px; background: var(--soft); }
.catalog-page .pagefoot { padding: 36px 20px; color: var(--tx2); background: var(--soft); }

.expert-catalog .card,
.service-catalog .card { padding: 0; }
.expert-catalog .ehead,
.service-catalog .ehead { display: block; }
.expert-catalog .av,
.service-catalog .av { width: 100%; height: 240px; border-radius: 0; background-color: var(--blue2); font-size: 52px; }
.expert-catalog .ehead > div,
.service-catalog .ehead > div { padding: 22px 22px 0; }
.expert-catalog .nm,
.service-catalog .nm { font-size: 21px; font-weight: 600; }
.expert-catalog .tt,
.service-catalog .tt { margin-top: 8px; }
.expert-catalog .bio,
.service-catalog .bio { margin: 14px 22px 0; font-size: 14px; }
.expert-catalog .tags,
.service-catalog .tags { margin: 14px 22px 0; }
.expert-catalog .foot,
.service-catalog .foot { margin: auto 22px 22px; padding-top: 20px; }

.catalog-page .ovl { background: rgba(10,15,26,.56); backdrop-filter: blur(8px); }
.catalog-page .modal { border-radius: 20px; box-shadow: 0 24px 64px rgba(10,15,26,.22); }
.catalog-page .mhd { padding: 24px 28px; border-bottom-color: var(--line); font-size: 22px; }
.catalog-page .mbd { padding: 28px; }
.catalog-page .mbd input,
.catalog-page .mbd textarea,
.catalog-page .mbd select { min-height: 50px; border-radius: 12px !important; }
.catalog-page.detail-open { overflow: hidden; }
.catalog-page #dtOvl { align-items: center; overflow: hidden; padding: 32px 24px; }
.catalog-page #dtOvl .course-detail-modal { width: min(100%,1040px); max-width: 1040px !important; max-height: calc(100dvh - 64px) !important; overflow: hidden !important; }
.catalog-page #dtOvl .mhd { min-height: 72px; padding: 16px 24px; background: #fff; }
.catalog-page #dtOvl .mbd { max-height: calc(100dvh - 136px); padding: 28px; overflow-y: auto; overscroll-behavior: contain; }
.catalog-page .share-head { width: auto; min-width: 76px; padding: 0 13px; gap: 7px; border-radius: 999px; }
.catalog-page .share-head-label { font-size: 13px; font-weight: 650; }
.catalog-page .course-detail-layout { display: grid; grid-template-columns: minmax(0,1.18fr) minmax(330px,.82fr); gap: 32px; }
.catalog-page .course-detail-overview,
.catalog-page .course-detail-checkout { min-width: 0; }
.catalog-page .course-detail-cover { width: 100%; aspect-ratio: 16/10; border-radius: 16px; background-color: var(--blue2); background-position: center; background-size: cover; }
.catalog-page .course-detail-copy { padding-top: 22px; }
.catalog-page .course-detail-kicker { display: block; margin-bottom: 10px; color: var(--blue); font-size: 12px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.catalog-page .course-detail-copy h3 { margin: 0; color: var(--ink); font-size: clamp(24px,2.1vw,30px); line-height: 1.36; font-weight: 700; letter-spacing: -.3px; }
.catalog-page .course-detail-subtitle { margin: 10px 0 0; color: var(--tx2); font-size: 15px; line-height: 1.65; }
.catalog-page .course-detail-description { margin: 18px 0 0; color: #333b4d; font-size: 15px; line-height: 1.8; white-space: pre-wrap; }
.catalog-page .course-detail-checkout { padding-left: 32px; border-left: 1px solid var(--line); }
.catalog-page .course-detail-checkout .choice-label { margin-top: 0; color: var(--ink); }
.catalog-page .course-detail-checkout .spec-options { grid-template-columns: 1fr; }
.catalog-page .course-detail-checkout .choice-btn { min-height: 58px; padding: 11px 14px; }
.catalog-page .checkout-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.catalog-page .checkout-heading span { color: var(--ink); font-size: 14px; font-weight: 700; }
.catalog-page .checkout-heading strong { color: var(--blue); font-size: 28px; }
.catalog-page .selected-price { margin: 22px 0 18px; padding: 18px 0; }
.catalog-page .teacher-profile { margin: 18px 0 0; padding: 14px 0; border-radius: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: transparent; }
.catalog-page .detail-actions { margin-top: 6px; }
.catalog-page .choice-btn { border-radius: 12px; }
.catalog-page .choice-btn.on { background: var(--blue2); }
.catalog-page .share-secondary { border-radius: 999px; }
.catalog-page .share-guide-card { width: min(100%,440px); }
.catalog-page .share-card-preview { display: grid; grid-template-columns: 138px minmax(0,1fr); min-height: 154px; margin: 0 0 16px; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.catalog-page .share-card-image-wrap { position: relative; min-height: 154px; overflow: hidden; background: var(--blue2); }
.catalog-page .share-card-image-wrap img { display: block; width: 100%; height: 100%; object-fit: cover; }
.catalog-page .share-card-image-wrap span { position: absolute; left: 10px; top: 10px; padding: 4px 8px; border-radius: 999px; color: var(--blue); background: rgba(255,255,255,.92); font-size: 10px; font-weight: 700; }
.catalog-page .share-card-copy { display: flex; min-width: 0; padding: 16px; flex-direction: column; justify-content: center; }
.catalog-page .share-card-copy > small { color: var(--blue); font-size: 10px; font-weight: 750; letter-spacing: .08em; }
.catalog-page .share-card-copy > strong { display: -webkit-box; margin-top: 7px; overflow: hidden; color: var(--ink); font-size: 16px; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.catalog-page .share-card-copy > span { min-height: 18px; margin-top: 6px; color: var(--blue); font-size: 12px; font-weight: 650; }
.catalog-page .share-card-copy > p { display: -webkit-box; margin: 5px 0 0; overflow: hidden; color: var(--tx2); font-size: 12px; line-height: 1.5; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.catalog-page .share-qr { width: 204px; height: 204px; }

@media (max-width: 980px) {
  .catalog-page .site-header { height: 68px; }
  .catalog-page .header-shell { height: 68px; }
  .catalog-page .hero { padding: 64px 24px 48px; }
  .catalog-page .filter-shell { padding: 24px; }
  .catalog-page .wrap { padding: 52px 24px 72px; }
  .catalog-page .grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .catalog-page .course-detail-layout { grid-template-columns: minmax(0,1fr) minmax(300px,.85fr); gap: 24px; }
  .catalog-page .course-detail-checkout { padding-left: 24px; }
}

@media (max-width: 820px) {
  .catalog-page #dtOvl .course-detail-modal { width: min(100%,680px); }
  .catalog-page .course-detail-layout { grid-template-columns: 1fr; }
  .catalog-page .course-detail-checkout { padding: 26px 0 0; border-top: 1px solid var(--line); border-left: 0; }
}

@media (max-width: 640px) {
  .catalog-page .header-shell { width: calc(100% - 32px); }
  .catalog-page .hero { padding: 48px 24px 36px; }
  .catalog-page .hero h1 { font-size: 36px; }
  .catalog-page .catalog-lead { font-size: 16px; }
  .catalog-page .filter-shell { width: 100%; }
  .catalog-page .category-tabs { flex-wrap: nowrap; }
  .catalog-page .wrap { padding: 44px 24px 64px; }
  .catalog-page .wrap::before { font-size: 24px; }
  .catalog-page .grid { grid-template-columns: 1fr; gap: 14px; }
  .catalog-page .card { min-height: 188px; display: grid; grid-template-columns: 36% 64%; border-radius: 16px; }
  .catalog-page .cover { height: 100%; aspect-ratio: auto; }
  .catalog-page .body { min-width: 0; padding: 18px 16px; }
  .catalog-page .title { font-size: 17px; }
  .catalog-page .sub { display: none; }
  .catalog-page .tags { margin-top: 10px; }
  .catalog-page .foot { margin-top: auto; }
  .catalog-page .price { font-size: 17px; }
  .catalog-page .go { display: none; }
  .expert-catalog .card,
  .service-catalog .card { display: grid; grid-template-columns: 36% 64%; padding: 0; }
  .expert-catalog .ehead,
  .service-catalog .ehead { display: contents; }
  .expert-catalog .av,
  .service-catalog .av { width: 100%; height: 100%; min-height: 188px; grid-column: 1; grid-row: 1/6; }
  .expert-catalog .ehead > div,
  .service-catalog .ehead > div { padding: 18px 16px 0; }
  .expert-catalog .bio,
  .service-catalog .bio { margin: 10px 16px 0; }
  .expert-catalog .tags,
  .service-catalog .tags { margin: 10px 16px 0; }
  .expert-catalog .foot,
  .service-catalog .foot { margin: auto 16px 16px; }
  .catalog-page #dtOvl { padding: 10px 0 0; align-items: flex-end; }
  .catalog-page #dtOvl .course-detail-modal { width: 100%; max-height: calc(100dvh - 10px) !important; border-radius: 20px 20px 0 0; }
  .catalog-page #dtOvl .mhd { min-height: 62px; padding: 12px 18px; font-size: 19px; }
  .catalog-page #dtOvl .mbd { max-height: calc(100dvh - 72px); padding: 18px 18px max(28px,env(safe-area-inset-bottom)); }
  .catalog-page .share-head { min-width: 40px; width: 40px; padding: 0; }
  .catalog-page .share-head-label { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); }
  .catalog-page .course-detail-cover { aspect-ratio: 16/10; border-radius: 14px; }
  .catalog-page .course-detail-copy { padding-top: 18px; }
  .catalog-page .course-detail-copy h3 { font-size: 23px; }
  .catalog-page .course-detail-description { margin-top: 14px; }
  .catalog-page .course-detail-checkout { padding-top: 22px; }
  .catalog-page .share-card-preview { grid-template-columns: 116px minmax(0,1fr); min-height: 142px; }
  .catalog-page .share-card-image-wrap { min-height: 142px; }
  .catalog-page .share-card-copy { padding: 14px; }
}