* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  background: #f1f5f9;
  color: #1e293b;
  line-height: 1.72;
}
a { color: #c2410c; }
img { max-width: 100%; height: auto; display: block; }

.tsz-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
@media (max-width: 900px) {
  .tsz-shell { grid-template-columns: 1fr; }
  .tsz-side { position: relative; }
}

.tsz-side {
  background: #0f172a;
  color: #e2e8f0;
  padding: 24px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.tsz-brand { font-weight: 800; font-size: 17px; color: #fb923c; }
.tsz-tag { font-size: 12px; color: #94a3b8; margin: 4px 0 18px; }
.tsz-side nav { display: flex; flex-direction: column; gap: 6px; }
.tsz-side nav a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 14px;
  padding: 6px 8px;
  border-radius: 6px;
}
.tsz-side nav a:hover { background: #1e293b; color: #fff; }
.tsz-cta {
  display: block;
  margin-top: 20px;
  background: #ea580c;
  color: #fff !important;
  text-align: center;
  padding: 12px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}
.tsz-cta--ghost {
  background: #334155;
  margin-top: 10px;
}

.tsz-main { padding: 28px 32px 80px; max-width: 920px; }
.tsz-hero {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  margin-bottom: 24px;
}
.tsz-hero img { width: 100%; max-height: 280px; object-fit: cover; }
.tsz-hero-body { padding: 28px; }
.tsz-hero h1 { margin: 0 0 12px; font-size: clamp(22px, 4vw, 32px); color: #0f172a; }
.tsz-lead { color: #64748b; margin: 0 0 16px; font-size: 17px; }

.tsz-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 20px;
}
.tsz-card h2 { margin: 0 0 12px; font-size: 21px; color: #0f172a; }
.tsz-card h3 { margin: 16px 0 8px; font-size: 17px; }

.tsz-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.tsz-table th, .tsz-table td {
  border: 1px solid #e2e8f0;
  padding: 10px 12px;
  text-align: left;
}
.tsz-table th { background: #f8fafc; }

.tsz-fig { margin: 16px 0; }
.tsz-fig figcaption { font-size: 13px; color: #64748b; margin-top: 8px; }

.tsz-range-wrap { margin: 16px 0; }
.tsz-range-wrap input[type="range"] { width: 100%; accent-color: #ea580c; }
.tsz-range-labels { display: flex; justify-content: space-between; font-size: 13px; color: #64748b; }

.tsz-calc label { display: block; margin: 10px 0 4px; font-weight: 600; font-size: 14px; }
.tsz-calc input {
  width: 100%;
  max-width: 200px;
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
}
.tsz-calc-out {
  margin-top: 14px;
  font-size: 20px;
  font-weight: 800;
  color: #c2410c;
}

.tsz-contact { background: #f8fafc; border-radius: 12px; padding: 20px; }
.tsz-btn {
  background: #ea580c;
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
}
.tsz-btn:hover { background: #c2410c; }
.tsz-email-full { font-family: monospace; color: #0f766e; margin-top: 8px; }

.tsz-faq details {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 10px;
}
.tsz-faq summary { cursor: pointer; font-weight: 600; }

.tsz-foot {
  text-align: center;
  padding: 24px;
  font-size: 13px;
  color: #64748b;
  border-top: 1px solid #e2e8f0;
  margin-top: 32px;
}

.tsz-sticky {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #0f172a;
  color: #fff;
  padding: 12px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  z-index: 100;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.tsz-sticky.is-visible { transform: translateY(0); }
.tsz-sticky a {
  background: #ea580c;
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}