:root {
  --bg: #f3f5fb;
  --surface: #ffffff;
  --surface-soft: #f7f9fd;
  --text: #111827;
  --muted: #5b6474;
  --border: #d6dce7;
  --accent: #2563eb;
  --accent-strong: #1e4fd4;
  --accent-light: #60a5fa;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #be123c;
  --shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.12);
  --radius: 14px;
}

:root[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #111c34;
  --surface-soft: #15223d;
  --text: #f1f5f9;
  --muted: #b8c4d8;
  --border: #263657;
  --accent: #60a5fa;
  --accent-strong: #3b82f6;
  --accent-light: #93c5fd;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #fb7185;
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.45);
  --shadow-lg: 0 20px 50px rgba(2, 6, 23, 0.65);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.container {
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem;
  transition: box-shadow 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.muted {
  color: var(--muted);
}

.tiny {
  font-size: 0.8rem;
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand {
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.92rem;
}

.main-nav a:hover {
  color: var(--text);
}

.btn {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.58rem 0.88rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: 0.18s ease;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-strong) 0%, #1549c7 100%);
  border-color: var(--accent-strong);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}

.btn-ghost {
  background: transparent;
}

.btn-danger {
  background: var(--danger);
  color: #ffffff;
  border-color: var(--danger);
}

.btn-sm {
  padding: 0.4rem 0.65rem;
  font-size: 0.84rem;
}

.hero {
  padding: 2rem 0 1.5rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.hero-copy {
  display: grid;
  gap: 0.8rem;
  align-content: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0.4) 100%);
  border: 2px solid rgba(37, 99, 235, 0.2);
  backdrop-filter: blur(10px);
}

.hero-copy h1 {
  font-size: clamp(1.55rem, 3.2vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.eyebrow {
  font-size: 0.83rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.07em;
  color: var(--accent);
}

.hero-stats {
  display: grid;
  gap: 0.8rem;
}

.hero-stats h2 {
  font-size: 1.12rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.stats-grid div {
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(96, 165, 250, 0.02) 100%);
  transition: all 0.25s ease;
  cursor: default;
}

.stats-grid div:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.stats-grid strong {
  display: block;
  font-size: 1.2rem;
  line-height: 1.1;
}

.stats-grid span {
  color: var(--muted);
  font-size: 0.82rem;
}

.compare-layout {
  display: grid;
  grid-template-columns: minmax(260px, 300px) minmax(0, 1fr);
  align-items: start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.filters {
  position: sticky;
  top: 72px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

.section-title h2 {
  font-size: 1.18rem;
}

.section-title-stack {
  align-items: flex-start;
}

.control {
  margin-bottom: 0.85rem;
}

.control label,
.control legend {
  display: block;
  font-size: 0.84rem;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-weight: 600;
}

input[type="search"],
input[type="number"],
select {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 10px;
  padding: 0.55rem 0.6rem;
}

input[type="range"] {
  width: 100%;
}

.range-meta {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.83rem;
}

.checkbox-group {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem;
  background: var(--surface-soft);
  display: grid;
  gap: 0.35rem;
}

.checkbox-group label {
  margin: 0;
  display: flex;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.86rem;
  color: var(--text);
}

.results {
  min-height: 520px;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
  gap: 0.9rem;
}

.empty-state {
  padding: 1rem;
  border: 1px dashed var(--border);
  border-radius: 10px;
  color: var(--muted);
  text-align: center;
}

.plan-card {
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: all 0.25s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.plan-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.plan-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  background: var(--surface);
}

.plan-card:hover::before {
  transform: scaleX(1);
}

.plan-card-top {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  align-items: flex-start;
}

.provider-name {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

.plan-card h3 {
  font-size: 1rem;
  line-height: 1.2;
}

.tech-pill {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.45rem;
  white-space: nowrap;
}

.price-line {
  color: var(--muted);
  font-size: 0.88rem;
}

.price-line strong {
  color: var(--text);
  font-size: 1.42rem;
  margin-right: 0.2rem;
  line-height: 1.1;
}

.speed-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.speed-row div {
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  padding: 0.45rem;
}

.metric {
  display: block;
  font-weight: 700;
}

.speed-row small {
  color: var(--muted);
  font-size: 0.75rem;
}

.meta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.32rem;
}

.meta-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
  font-size: 0.84rem;
  color: var(--muted);
}

.meta-list strong {
  color: var(--text);
  font-weight: 600;
}

.value-line {
  font-size: 0.86rem;
  color: var(--muted);
}

.plan-actions {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
}

.plan-actions .btn {
  flex: 1;
}

#highlights,
#compare,
#providers,
#calculator,
#faq {
  margin-bottom: 1rem;
}

.top-picks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.pick-card {
  border: 2px solid var(--accent-light);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
  padding: 0.8rem;
  display: grid;
  gap: 0.35rem;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.pick-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, transparent 100%);
  pointer-events: none;
}

.pick-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.12) 0%, rgba(59, 130, 246, 0.06) 100%);
}

.pick-rank {
  width: fit-content;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
  border-radius: 999px;
  font-size: 0.72rem;
  padding: 0.25rem 0.55rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  letter-spacing: 0.05em;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 0.7rem;
}

.compare-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 700px;
}

.compare-table th,
.compare-table td {
  border: 1px solid var(--border);
  padding: 0.55rem;
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: var(--surface-soft);
}

.compare-table tbody th {
  width: 160px;
  color: var(--muted);
  font-weight: 600;
}

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
}

.provider-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.8rem;
  display: grid;
  gap: 0.55rem;
  transition: all 0.25s ease;
  position: relative;
}

.provider-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.provider-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.provider-head h3 {
  font-size: 1rem;
}

.provider-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.provider-stats div {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 0.42rem;
}

.provider-stats strong {
  display: block;
  font-size: 1rem;
}

.provider-stats span {
  font-size: 0.74rem;
  color: var(--muted);
}

.calculator-form {
  display: grid;
  gap: 0.45rem;
  max-width: 360px;
}

.calculator-form label {
  font-size: 0.84rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.calculator-form button {
  margin-top: 0.35rem;
  width: fit-content;
}

.calculator-result {
  margin-top: 0.85rem;
}

.faq {
  display: grid;
  gap: 0.7rem;
}

.faq details {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  padding: 0.62rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin-top: 0.45rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  background-color: var(--bg-secondary, rgba(0, 0, 0, 0.02));
  padding: 1.5rem 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.footer-section {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-section h3,
.footer-section h4 {
  margin: 0 0 0.75rem 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

.footer-section p {
  margin: 0.5rem 0;
}

.footer-main p {
  font-size: 0.85rem;
  color: var(--muted);
}

.plan-dialog {
  width: min(680px, 92vw);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  padding: 0;
}

.plan-dialog::backdrop {
  background: rgba(15, 23, 42, 0.56);
}

.dialog-header {
  padding: 0.8rem 0.9rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.dialog-body {
  padding: 0.9rem;
  display: grid;
  gap: 0.7rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.detail-grid div {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  padding: 0.5rem;
}

.detail-grid strong {
  display: block;
}

.dialog-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-grid,
  .compare-layout {
    grid-template-columns: 1fr;
  }

  .filters {
    position: static;
  }
}

@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .main-nav {
    width: 100%;
  }

  .plan-actions {
    flex-direction: column;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}

.footer-contact a {
  color: var(--primary);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.footer-contact a:hover {
  opacity: 0.8;
  text-decoration: underline;
}