:root {
  --tw-info-ink: #15120c;
  --tw-info-muted: #6b645b;
  --tw-info-accent: #2a62e2;
  --tw-info-warm: #f15a2a;
  --tw-info-bg-1: #f6f1e6;
  --tw-info-bg-2: #eaf3ff;
  --tw-info-card: rgba(255, 255, 255, 0.94);
  --tw-info-stroke: #e5dccf;
  --tw-info-shadow: 0 18px 40px rgba(17, 16, 11, 0.12);
}

body.tw-info-theme {
  margin: 0;
  color: var(--tw-info-ink);
  font-family: "Trebuchet MS", "Gill Sans", "Helvetica Neue", sans-serif;
  background: linear-gradient(145deg, var(--tw-info-bg-1), var(--tw-info-bg-2));
}

.tw-info-shell {
  width: 100%;
  max-width: 1120px;
  margin: 2rem auto;
  padding: 0 1rem 2rem;
}

.tw-info-card {
  background: var(--tw-info-card);
  border: 1px solid var(--tw-info-stroke);
  border-radius: 20px;
  box-shadow: var(--tw-info-shadow);
  padding: clamp(1rem, 2.2vw, 1.8rem);
}

.tw-info-card h1 {
  font-family: "Bodoni MT", "Didot", "Garamond", "Georgia", serif;
  letter-spacing: 0.2px;
  margin-bottom: 0.7rem;
}

.tw-info-card h2,
.tw-info-card h3 {
  margin-top: 1.5rem;
  color: #1f2937;
}

.tw-info-card p,
.tw-info-card li {
  line-height: 1.58;
}

.tw-info-card ul {
  margin-bottom: 1rem;
}

.tw-back-row {
  margin-bottom: 0.85rem;
}

.tw-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid #cfd9ea;
  background: #ffffff;
  color: #0f172a;
  border-radius: 999px;
  padding: 0.5rem 0.95rem;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.tw-back-btn:hover {
  background: #f8fafc;
  border-color: #9eb1d2;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.14);
}

.tw-back-btn:focus-visible {
  outline: 2px solid var(--tw-info-accent);
  outline-offset: 2px;
}

.feature-list .collapsible-section {
  margin: 0.8rem 0;
  border: 1px solid var(--tw-info-stroke);
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(17, 16, 11, 0.08);
  overflow: hidden;
}

.feature-list .collapsible-header {
  padding: 0.75rem 0.9rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(145deg, #fffaf1, #f1f7ff);
}

.feature-list .collapsible-body {
  padding: 0.4rem 1.15rem 0.9rem;
}

.feature-list img {
  width: min(100%, 900px);
  display: block;
  margin: 0.9rem auto 0.2rem;
  border: 1px solid var(--tw-info-stroke);
  border-radius: 12px;
}