*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root {
  --aws: #FF9900;
  --azure: #0078D4;
  --gcp: #4285F4;
  --cf: #F6821F;
  --bg: #f5f6f8;
  --surface: #fff;
  --border: #dfe2e7;
  --text: #1a1a2e;
  --text-secondary: #4a4f5e;
  --text-muted: #8a8fa0;
  --radius: 10px;
  --toolbar-h: 88px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
}

/* Header */
header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: #fff;
  padding: 3rem 1.5rem 2rem;
  text-align: center;
}
h1 { font-size: 2.8rem; font-weight: 800; letter-spacing: -0.02em; }
.subtitle { margin-top: 0.5rem; color: rgba(255,255,255,0.75); font-size: 1.15rem; }

.search-bar {
  position: relative;
  max-width: 560px;
  margin: 1.5rem auto 0;
}
.search-bar input {
  width: 100%;
  padding: 0.85rem 1.3rem;
  font-size: 1.05rem;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 99px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.search-bar input::placeholder { color: rgba(255,255,255,0.5); }
.search-bar input:focus { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.15); }
.search-count {
  position: absolute; right: 1.3rem; top: 50%; transform: translateY(-50%);
  font-size: 0.85rem; color: rgba(255,255,255,0.5);
}

/* Toolbar (sticky TOC + controls) */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

nav#toc {
  padding: 0.5rem 1.5rem 0;
  overflow-x: auto;
  white-space: nowrap;
  display: flex;
  gap: 0.25rem;
  scrollbar-width: none;
}
nav#toc::-webkit-scrollbar { display: none; }

.toc-link {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 99px;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.toc-link:hover { background: #eef1f5; color: var(--text); }

.controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.5rem;
  border-top: 1px solid #eef0f3;
  overflow-x: auto;
  scrollbar-width: none;
}
.controls::-webkit-scrollbar { display: none; }

.ctrl-btn {
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.ctrl-btn:hover { background: #eef1f5; border-color: #c8cbd2; }
.ctrl-btn.active { background: #1a1a2e; color: #fff; border-color: #1a1a2e; }

.ctrl-sm { font-size: 0.75rem; padding: 0.25rem 0.6rem; }

.provider-filters {
  display: flex;
  gap: 0.3rem;
  align-items: center;
}
.provider-filters::before {
  content: 'Show:';
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-right: 0.15rem;
  white-space: nowrap;
}
.pf-btn {
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1.5px solid;
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s, background 0.15s;
}
.pf-btn.active { color: #fff; }
.pf-btn:not(.active) { opacity: 0.4; }

/* Main */
main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Category sections */
.category { margin-bottom: 2.5rem; }

.category-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  scroll-margin-top: 100px;
  cursor: pointer;
  user-select: none;
}
.category-header h2 { font-size: 1.6rem; font-weight: 700; }
.category-header .chevron {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}
.category.collapsed .chevron { transform: rotate(-90deg); }
.category.collapsed .compare-table,
.category.collapsed .category-intro { display: none; }

.category-intro {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 85ch;
}

/* Table */
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  table-layout: fixed;
}

.compare-table thead th {
  position: sticky;
  top: 88px;
  z-index: 10;
  padding: 0.75rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--border);
  text-align: left;
  background: #f0f1f4;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.compare-table thead th:first-child { width: 34%; }
.compare-table thead th.provider-col { width: 16.5%; text-align: center; }

.provider-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 5px;
  color: #fff;
  font-weight: 700;
  font-size: 0.78rem;
}

.compare-table tbody tr { transition: background 0.1s; cursor: pointer; }
.compare-table tbody tr:hover { background: #f0f2f6; }
.compare-table tbody tr.expanded { background: #f7f8fa; }

.compare-table td {
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 0.95rem;
}
.compare-table tbody tr:last-child td { border-bottom: none; }

/* Service info cell */
.service-name { font-weight: 700; font-size: 1.05rem; color: var(--text); }

.service-sub {
  margin-top: 0.2rem;
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.5;
}

.service-detail {
  display: none;
  margin-top: 0.5rem;
  font-size: 0.88rem;
  line-height: 1.55;
}
tr.expanded .service-detail { display: block; }

.detail-when {
  color: var(--text);
  font-weight: 500;
  font-size: 0.92rem;
  margin-bottom: 0.5rem;
}

.detail-why {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  padding-left: 0.75rem;
  border-left: 2px solid #e0e2e6;
  margin-bottom: 0.6rem;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: 0.5rem;
}

.detail-pricing {
  font-size: 0.82rem;
  color: var(--text-muted);
}


.expand-indicator {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 0.4rem;
  transition: transform 0.15s;
  vertical-align: middle;
}
tr.expanded .expand-indicator { transform: rotate(90deg); }

/* Provider cells */
.provider-cell { text-align: center; font-size: 0.9rem; line-height: 1.45; }
.provider-cell .svc { display: block; font-weight: 500; padding: 0.15rem 0; }
.provider-cell .svc + .svc {
  border-top: 1px dashed #e2e5e9;
  margin-top: 0.15rem; padding-top: 0.3rem;
}
.provider-cell .empty { color: #d0d3d9; font-size: 1rem; }

/* Search highlight */
mark { background: #fff3bf; color: inherit; border-radius: 2px; padding: 0 2px; }

/* Hidden */
tr.hidden, tr.search-hidden, tr.provider-hidden { display: none; }
.category.hidden { display: none; }

/* Footer */
footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1000px) {
  .compare-table thead th:first-child { width: 36%; }
  .compare-table thead th.provider-col { width: 16%; }
}
@media (max-width: 800px) {
  body { font-size: 16px; }
  .service-desc { display: none; }
  .compare-table td { padding: 0.6rem; }
  .controls { padding: 0.4rem 1rem; }
}
@media (max-width: 640px) {
  header { padding: 2rem 1rem 1.5rem; }
  h1 { font-size: 2rem; }
  main { padding: 0.75rem; }
  .compare-table { font-size: 0.82rem; display: block; overflow-x: auto; }
  .category-intro { display: none; }
  .billing-hint { display: none; }
}