/* Public-facing UI system: derived from the supplied exhibition and supplier-library references. */
:root {
  --public-ink: #18333a;
  --public-muted: #6d7d82;
  --public-line: #e5eceb;
  --public-canvas: #f5f8f7;
  --public-surface: #ffffff;
  --public-teal: #007b73;
  --public-teal-strong: #00645e;
  --public-teal-soft: #e8f5f2;
  --public-shadow: 0 8px 24px rgba(34, 71, 73, .07);
}

/* Dedicated public entry for the exhibition design studio. */
.topbar .nav .design-nav-link { color: var(--public-teal-strong); font-weight: 700; }
.topbar .nav .infinite-canvas-nav-link { color: var(--public-teal-strong); font-weight: 700; }

body {
  background: var(--public-canvas);
  color: var(--public-ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  letter-spacing: 0;
}

.topbar {
  position: relative;
  z-index: 20;
  min-height: 64px;
  padding: 0 max(28px, calc((100% - var(--page-frame-width)) / 2));
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid var(--public-line);
  box-shadow: 0 2px 12px rgba(35, 66, 70, .04);
}

.topbar .brand { color: var(--public-ink); font-size: 16px; font-weight: 700; }
.topbar .brand-mark { width: 32px; height: 32px; border-radius: 50%; background: var(--public-teal); color: #fff; font-size: 11px; }
.topbar .nav { gap: 4px; }
.topbar .nav a { position: relative; padding: 22px 11px 19px; color: #405359; font-size: 14px; }
.topbar .nav a:hover, .topbar .nav a.active { color: var(--public-teal); background: transparent; }
.topbar .nav a.active::after { content: ""; position: absolute; right: 11px; bottom: 0; left: 11px; height: 2px; background: var(--public-teal); }
.topbar .user-badge { color: var(--public-ink); }
.nav-login-button, .btn.primary, button.primary, .primary-button { border-color: var(--public-teal); background: var(--public-teal); color: #fff; box-shadow: none; }
.nav-login-button:hover, .btn.primary:hover, button.primary:hover, .primary-button:hover { border-color: var(--public-teal-strong); background: var(--public-teal-strong); }
.btn.secondary, button.secondary { border-color: #9bcac4; background: #fff; color: var(--public-teal-strong); }

main { min-height: calc(100vh - 64px); }
main > .section, .section { width: min(var(--page-frame-width), calc(100% - 48px)); margin-right: auto; margin-left: auto; }
.page-hero { padding-top: 28px; padding-bottom: 42px; }
.page-hero::before { opacity: .13 !important; }
.page-title, .section-head h2, .section-title { color: var(--public-ink); letter-spacing: 0; }
.eyebrow { color: var(--public-teal); font-size: 12px; font-weight: 700; letter-spacing: .04em; }
.notice, .empty-state { border-color: var(--public-line); background: #fff; color: var(--public-muted); border-radius: 7px; }

/* Shared foreground panels */
.card, .ai-console, .library-list-table-wrap, .flat-category-picker, .article-card, .article-detail, .case-card, .expo-detail-card {
  border: 1px solid var(--public-line);
  border-radius: 7px;
  background: var(--public-surface);
  box-shadow: var(--public-shadow);
}
input, textarea, select { border-color: #dbe6e3; border-radius: 5px; color: var(--public-ink); background: #fff; }
input:focus, textarea:focus, select:focus { border-color: var(--public-teal); box-shadow: 0 0 0 3px rgba(0, 123, 115, .11); }

/* Home: a restrained editorial entry point rather than the previous dark billboard. */
.home-page .home-hero {
  width: min(var(--page-frame-width), calc(100% - 48px));
  min-height: 292px;
  margin: 28px auto 24px;
  padding: 48px 46px;
  overflow: hidden;
  border: 1px solid #dfe9e7;
  border-radius: 7px;
  background-color: #edf7f5;
  background-image: linear-gradient(90deg, rgba(238,248,246,.95) 0%, rgba(238,248,246,.80) 42%, rgba(238,248,246,.14) 78%), url("../system-assets/banners/global-network.jpg");
  background-position: center, right center;
  background-size: cover, cover;
  box-shadow: var(--public-shadow);
}
.home-page .hero-copy { max-width: 610px; }
.home-page .home-hero h1 { margin: 8px 0 14px; color: #123c43; font-size: clamp(30px, 4vw, 46px); line-height: 1.18; }
.home-page .home-hero .hero-copy > p:last-child { color: #426067; font-size: 16px; line-height: 1.8; }
.home-page .hero-panel { align-self: stretch; width: 314px; gap: 9px; }
.home-page .hero-panel > div { padding: 15px 18px; border: 1px solid rgba(0,123,115,.17); border-radius: 6px; background: rgba(255,255,255,.78); color: #35575c; backdrop-filter: blur(5px); }
.home-page .hero-panel strong { color: var(--public-teal-strong); font-size: 30px; }
.home-page .hero-panel span { color: #547075; }
.home-page .ai-console-section { padding: 28px 0 42px; }
.home-page .section-head { margin-bottom: 18px; }
.home-page .ai-console { overflow: hidden; }
.home-page .mode-switch { padding: 0 24px; border-bottom: 1px solid var(--public-line); background: #fbfdfc; }
.home-page .mode-option { flex: 0 0 auto; padding: 17px 22px; color: var(--public-muted); border-bottom: 2px solid transparent; }
.home-page .mode-option.active { color: var(--public-teal-strong); border-color: var(--public-teal); background: #fff; }
.home-page .mode-option span { color: inherit; opacity: .78; }
.home-page .smart-search { padding: 24px; background: #fff; }
.home-page .search-shell { border: 0; padding: 0; background: transparent; }
.home-page .query-label textarea { min-height: 104px; }
.home-page .how-it-works, .home-page .intro-grid-section { width: 100%; padding: 44px max(24px, calc((100% - var(--page-frame-width)) / 2)); background: #fff; }
.home-page .how-it-works { border-top: 1px solid var(--public-line); }
.home-page .steps-grid, .home-page .card-grid, .home-page .intro-grid { gap: 14px; }
.home-page .step-card, .home-page .quick-card, .home-page .intro-grid article { padding: 20px; border-color: var(--public-line); border-radius: 7px; box-shadow: none; }
.home-page .step-card:hover, .home-page .quick-card:hover { transform: translateY(-2px); border-color: #a7d4cd; box-shadow: var(--public-shadow); }
.home-page .step-icon { width: 38px; height: 38px; border-radius: 50%; background: var(--public-teal-soft); color: var(--public-teal); font-size: 14px; }
.home-page .quick-card::before { background: var(--public-teal); }
.home-page .quick-card h3, .home-page .intro-grid article h2 { color: var(--public-ink); }

/* Library pages: flat category rows and readable information-first result lists. */
.global-network-page { background: var(--public-canvas) !important; }
.global-network-page .page-hero { padding-top: 30px; background: transparent !important; }
.global-network-page .page-hero::before { display: none !important; }
.global-network-page .section-head.inline { align-items: flex-start; margin-bottom: 2px; }
.global-network-page .section-head.inline h1 { margin: 4px 0 8px; font-size: 30px; }
.global-network-page .section-head.inline > div:first-child > p:last-child { max-width: 620px; color: var(--public-muted); }
.library-page-hero, .expo-library-hero, .supplier-library-hero { margin-top: 0; padding-top: 28px; background: transparent; }
.library-inline-filter-row { display: flex; align-items: center; gap: 12px; margin: 20px 0 14px; padding: 18px; border: 1px solid var(--public-line); border-radius: 7px; background: #fff; box-shadow: var(--public-shadow); }
.library-inline-select { flex: 0 1 180px; min-width: 150px; height: 40px; }
.library-search-box { display: flex; flex: 1; align-items: center; min-width: 260px; }
.library-search-input { width: 100%; height: 40px; }
.library-count-badge { flex: 0 0 auto; padding: 0 12px; color: var(--public-teal-strong); font-size: 14px; font-weight: 700; }
.flat-category-picker { margin: 0 0 16px; padding: 18px 20px; box-shadow: none; }
.flat-category-head, .flat-category-subhead { color: var(--public-ink); font-size: 14px; }
.flat-category-row { gap: 8px; }
.flat-category-row button, .flat-category-clear { border-color: transparent; border-radius: 999px; background: #f4f8f7; color: #53666b; }
.flat-category-row button:hover, .flat-category-row button.active, .flat-category-clear:hover { border-color: #a5d7cf; background: var(--public-teal-soft); color: var(--public-teal-strong); }
.flat-category-row b { background: transparent; color: var(--public-teal); }
.library-list-table-wrap { overflow: hidden; box-shadow: none; }
.library-list-table thead th { padding: 14px 12px; background: #f5faf8; color: #597075; font-weight: 600; }
.library-list-table tbody td { padding: 16px 12px; border-color: #edf1f0; vertical-align: middle; }
.library-list-table tbody tr:hover { background: #fbfefd; }
.library-title-cell strong { color: var(--public-ink); }
.library-title-cell small, .expo-ai-profile, .expo-organizer-row { color: #718287; }
.table-logo { border-radius: 5px; border-color: var(--public-line); }
.library-list-actions { white-space: nowrap; }
.library-list-actions .btn { min-width: 76px; padding: 8px 11px; font-size: 12px; }
.library-pagination { align-items: center; justify-content: center; gap: 12px; padding: 24px 0 34px; color: var(--public-muted); }
.library-pagination .btn { min-width: 80px; }

/* Content and details: the same compact, quiet panels used in both references. */
.article-list, .article-grid, .case-library-grid { gap: 16px; }
.article-card, .case-card { overflow: hidden; box-shadow: none; }
.article-card:hover, .case-card:hover { border-color: #acd6cf; box-shadow: var(--public-shadow); }
.article-card h2, .article-card h3, .case-card h2, .case-card h3 { color: var(--public-ink); }
.article-meta, .article-card time, .case-card .meta { color: var(--public-muted); }
.article-detail, .article-page, .expo-detail-page { padding: 28px; }
.article-detail h1, .expo-detail-page h1 { color: var(--public-ink); }
.expo-detail-hero.with-cover { min-height: 255px; background-position: center; background-size: cover; }
.expo-detail-hero.with-cover .expo-breadcrumb a, .expo-detail-hero.with-cover .expo-breadcrumb span, .expo-detail-hero.with-cover .expo-breadcrumb b, .expo-detail-hero.with-cover .company-page-title h1, .expo-detail-hero.with-cover .expo-hero-contact, .expo-detail-hero.with-cover .expo-hero-contact h2, .expo-detail-hero.with-cover .expo-field-grid dt, .expo-detail-hero.with-cover .expo-field-grid dd { color: #fff; }
.expo-detail-hero.with-cover .company-page-logo { background: rgba(255,255,255,.96); }
.expo-detail-hero.with-cover .expo-field-grid > div { border-color: rgba(255,255,255,.18); background: rgba(0,45,51,.20); }

@media (max-width: 900px) {
  .topbar { padding: 0 18px; }
  .topbar .nav { overflow-x: auto; }
  .topbar .nav a { flex: 0 0 auto; padding-right: 9px; padding-left: 9px; }
  main > .section, .section, .home-page .home-hero { width: min(100% - 28px, var(--page-frame-width)); }
  .home-page .home-hero { min-height: auto; padding: 34px 26px; background-image: linear-gradient(90deg, rgba(238,248,246,.95) 0%, rgba(238,248,246,.84) 100%), url("../system-assets/banners/global-network.jpg"); }
  .home-page .hero-panel { width: 100%; }
  .library-inline-filter-row { flex-wrap: wrap; }
}

@media (max-width: 620px) {
  body { overflow-x: hidden; }
  .topbar { min-height: 58px; flex-wrap: wrap; }
  .topbar .brand { font-size: 14px; }
  .topbar .nav { order: 3; flex: 1 1 100%; width: 100%; min-width: 0; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
  .topbar .nav::-webkit-scrollbar { display: none; }
  .topbar .nav a { padding-top: 12px; padding-bottom: 12px; }
  .home-page .home-hero h1 { font-size: 29px; }
  .home-page .home-hero .hero-copy > p:last-child { font-size: 14px; }
  .home-page .hero-panel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .home-page .hero-panel > div { padding: 11px; }
  .home-page .hero-panel strong { font-size: 22px; }
  .home-page .steps-grid, .home-page .card-grid, .home-page .intro-grid { grid-template-columns: 1fr; }
  .library-inline-select, .library-search-box { flex-basis: 100%; min-width: 100%; }
  .flat-category-picker { padding: 15px; }
  .library-list-table-wrap { overflow-x: auto; }
  .library-list-table { min-width: 900px; }
}