:root { --fg: #111; --bg: #fff; --muted: #666; --line: #e8e8e8; --accent: #111; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: 'Noto Sans', system-ui, -apple-system, 'PingFang TC', 'Microsoft JhengHei', sans-serif; color: var(--fg); background: var(--bg); line-height: 1.6; }
a { color: var(--fg); text-decoration: none; }
a:hover { text-decoration: underline; }
.page-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 10px 0;
  object-fit: cover;
  max-height: 280px;
}
.site-header { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.brand { font-weight: 700; letter-spacing: 0.2px; }
.brand.small { font-size: 14px; }
.site-nav { display: none; gap: 16px; }
.site-nav a { padding: 8px 10px; border-radius: 6px; }
.site-nav a[aria-current="page"] { background: #f4f4f4; }
.nav-toggle { border: 1px solid var(--line); background: transparent; border-radius: 8px; padding: 6px 10px; font-size: 18px; }
@media (min-width: 960px) { .nav-toggle { display:none; } .site-nav { display:flex; } .site-header { padding: 16px 32px; } }
main { padding: 24px 16px; }
.page h1, .hero h1 { font-size: 28px; margin: 10px 0 8px; }
.hero { padding: 24px 0; }
.hero.hero-with-bg {
  padding: 60px 20px;
  background-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('./hero-background.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  border-radius: 16px;
  text-align: center;
  overflow: hidden;
  margin-top: 16px;
}
.hero.hero-with-bg h1 {
  font-size: 32px;
}
.hero.hero-with-bg p {
  color: #f0f0f0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero.hero-with-bg .hero-cta {
  justify-content: center;
}
.hero.hero-with-bg .btn {
  border-color: #fff;
}
.hero.hero-with-bg .btn.primary {
  background: #fff;
  color: var(--fg);
}
.hero p { color: var(--muted); margin: 0 0 16px; }
.hero-cta { display:flex; gap: 10px; flex-wrap: wrap; }
.btn { display:inline-block; padding: 10px 14px; border: 1px solid var(--fg); border-radius: 10px; transition: transform .2s ease, background .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-2px); text-decoration: none; box-shadow: 0 4px 10px rgba(0,0,0,0.08); }
.btn.primary { background: var(--fg); color: #fff; }
.text-link { text-decoration: underline; }
.quick-points { display:grid; grid-template-columns: 1fr; gap: 10px; margin: 20px 0; }
.point { padding: 12px; border: 1px solid var(--line); border-radius: 12px; }
.features { margin: 28px 0; }
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.feature-item { padding: 16px; border: 1px solid var(--line); border-radius: 12px; text-align: center; transition: transform .2s ease, background .2s, box-shadow .2s; }
.feature-item:hover { transform: translateY(-2px); text-decoration: none; background: #fafafa; box-shadow: 0 4px 10px rgba(0,0,0,0.07); }
.feature-item h4 { margin: 0; font-weight: 500; font-size: 16px; }
.apps { margin-top: 28px; }
.app-grid { display:grid; grid-template-columns: 1fr; gap: 12px; }
.app-card { border: 1px solid var(--line); border-radius: 14px; padding: 14px; display:block; transition: transform .2s ease, background .2s, box-shadow .2s; }
.app-card:hover { transform: translateY(-3px); text-decoration: none; background: #fafafa; box-shadow: 0 5px 15px rgba(0,0,0,0.07); }
.app-card .icon { font-size: 28px; }
.app-card-img {
  width: 100%;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  margin-bottom: 8px;
}
.apps-cta { margin-top: 8px; }
.columns { display:grid; grid-template-columns: 1fr; gap: 16px; }
.cards { display:grid; grid-template-columns: 1fr; gap: 12px; }
.card { border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.mini-link { font-size: 14px; text-decoration: underline; }
.downloads { padding-left: 18px; }
.anchor-pad { scroll-margin-top: 80px; margin-top: 8px; }
.chart-container, #barrierChart { width: 100%; }
.chart-caption { color: var(--muted); font-size: 12px; margin-top: 6px; }
.cta-row { display:flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* Solutions page filter & grid */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.tag-filter { background: #f4f4f4; border: 1px solid transparent; border-radius: 20px; padding: 6px 14px; cursor: pointer; transition: background .2s, color .2s; font-size: 14px; }
.tag-filter:hover { background: #e8e8e8; }
.tag-filter.active { background: var(--fg); color: #fff; }
.solutions-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 24px; }
.solution-article { border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.article-image { width: 100%; height: 160px; border-radius: 8px; object-fit: cover; margin-bottom: 12px; }
.solution-article h3 { margin-top: 0; }
.solution-article p { font-size: 15px; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.tag { background: #f4f4f4; font-size: 12px; padding: 4px 8px; border-radius: 6px; }

/* Data table styles */
.data-table-container { overflow-x: auto; margin: 12px 0; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; white-space: nowrap; }
.data-table th, .data-table td { padding: 8px 10px; border: 1px solid var(--line); text-align: center; }
.data-table th { background: #f8f8f8; font-weight: 500; }
.data-table td { color: var(--muted); }
.data-table td:first-child { color: var(--fg); text-align: left; }
.data-table strong { color: var(--fg); font-weight: 700; }

.site-footer { border-top: 1px solid var(--line); margin-top: 32px; padding: 16px; }
.footer-grid { display:grid; grid-template-columns: 1fr; gap: 12px; align-items: start; }
.footer-grid p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.footer-nav { display:flex; gap: 12px; flex-wrap: wrap; }
.contact-grid { display:grid; grid-template-columns: 1fr; gap: 16px; }
.form label { display:flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
input, select, textarea { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit; width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid #000; outline-offset: 1px; }
.form-actions { display:flex; gap: 10px; align-items: center; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 6px; }
.mini-links { display:flex; gap: 10px; flex-wrap: wrap; }

/* Animations */
.animate-on-load, .animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.visible, .animate-on-load.visible {
  opacity: 1;
  transform: translateY(0);
}
.quick-points .animate-on-scroll:nth-child(2),
.cards .animate-on-scroll:nth-child(2),
.app-grid .animate-on-scroll:nth-child(2),
.feature-grid .animate-on-scroll:nth-child(2) {
  transition-delay: 0.1s;
}
.quick-points .animate-on-scroll:nth-child(3),
.cards .animate-on-scroll:nth-child(3),
.app-grid .animate-on-scroll:nth-child(3),
.feature-grid .animate-on-scroll:nth-child(3) {
  transition-delay: 0.2s;
}
.cards .animate-on-scroll:nth-child(4),
.app-grid .animate-on-scroll:nth-child(4),
.feature-grid .animate-on-scroll:nth-child(4) {
  transition-delay: 0.3s;
}

@media (min-width: 720px) {
  main { padding: 32px; }
  .quick-points { grid-template-columns: repeat(3,1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2,1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .columns { grid-template-columns: repeat(2,1fr); }
  .cards { grid-template-columns: repeat(3,1fr); }
  .cards.cards-4-cols { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr auto; }
  .contact-grid { grid-template-columns: 1.1fr 1fr; }
}

@media (min-width: 960px) {
  .cards.cards-4-cols { grid-template-columns: repeat(4, 1fr); }
}