:root {
  --brand: #0d9488;
  --brand-deep: #0f4c5c;
  --brand-light: #14b8a6;
  --ink: #0b1f2a;
  --ink-muted: #4a6270;
  --bg: #f6f9fb;
  --bg-soft: #eef4f7;
  --bg-tint: #e6f4f2;
  --line: #d7e2ea;
  --white: #ffffff;
  --shadow: 0 8px 28px rgba(11, 31, 42, 0.08);
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: var(--brand-deep); text-decoration: none; }
a:hover { color: var(--brand); text-decoration: underline; }

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.logo-img { display: block; height: 28px; width: auto; }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links a { text-decoration: none; color: var(--ink-muted); }
.nav-links a:hover { color: var(--brand-deep); }

.hero {
  background: linear-gradient(135deg, #0f4c5c 0%, #0d9488 55%, #134e4a 100%);
  color: var(--white);
  padding: 3rem 0 3.5rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0.4rem 0 1rem;
  letter-spacing: -0.02em;
}

.hero .lead, .page-hero .lead {
  font-size: 1.08rem;
  opacity: 0.95;
  max-width: 52ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-light);
}

.hero .eyebrow { color: #99f6e4; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--white);
  color: var(--brand-deep);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.45);
}

.page-hero .btn-secondary {
  color: var(--brand-deep);
  border-color: var(--line);
  background: var(--white);
}

.hero-media {
  display: grid;
  gap: 1rem;
}

.hero-photo, .hero-art, .offer-figure img, .pillar-image, .media-card img, .benefit-card img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}

.section { padding: 3rem 0; }
.section.alt { background: var(--bg-soft); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-head h2 { margin: 0; font-size: 1.6rem; letter-spacing: -0.02em; }

.page-hero {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 2.5rem 0 2rem;
}

.page-hero h1 { margin: 0.35rem 0 0.75rem; font-size: clamp(1.6rem, 3vw, 2.2rem); }

.content { padding: 2rem 0 3rem; }

.page-layout { display: grid; gap: 2rem; }

.prose { max-width: 72ch; }
.prose p { color: var(--ink-muted); }

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

.card, .pillar-card, .benefit-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.media-card { display: block; color: inherit; text-decoration: none; }
.media-card:hover { transform: translateY(-2px); border-color: var(--brand-light); }

.media-card .label, .pillar-card .label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand);
}

.media-card h3, .pillar-card h3, .benefit-card h3 { margin: 0.4rem 0; color: var(--ink); }

.pillar-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.pillar-card { color: inherit; text-decoration: none; }

.offer-split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .offer-split { grid-template-columns: 1fr 1fr; }
  .offer-split.reverse { direction: rtl; }
  .offer-split.reverse > * { direction: ltr; }
}

.offer-list { list-style: none; padding: 0; margin: 1rem 0; }
.offer-list li { margin-bottom: 0.65rem; }
.offer-list a { display: block; padding: 0.75rem; border: 1px solid var(--line); border-radius: 10px; background: var(--white); text-decoration: none; }
.offer-list strong { display: block; color: var(--ink); }
.offer-list span { color: var(--ink-muted); font-size: 0.92rem; }

.benefit-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.network-band {
  background: var(--brand-deep);
  color: var(--white);
}

.network-stats {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin-top: 1.5rem;
}

.stat strong { display: block; font-size: 1.8rem; }
.stat span { color: #b8d4de; font-size: 0.92rem; }

.disclaimer {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--brand);
  background: var(--bg-soft);
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.review-article h2 {
  margin-top: 2rem;
  letter-spacing: -0.02em;
}

.key-facts {
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.key-facts-row {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line);
}

.key-facts-row:first-child { border-top: 0; }

.key-facts dt {
  font-weight: 700;
  color: var(--ink-muted);
  font-size: 0.82rem;
}

.key-facts dd { margin: 0; color: var(--ink); }

.who-for {
  margin: 0.75rem 0 1.25rem;
  padding-left: 1.15rem;
  color: var(--ink);
}

.who-not { color: var(--ink-muted); }

.pros-cons {
  display: grid;
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

@media (min-width: 800px) {
  .pros-cons { grid-template-columns: 1fr 1fr; }
}

.pros-cons .pros,
.pros-cons .cons {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  background: #fff;
}

.pros-cons h3 { margin: 0 0 0.65rem; font-size: 1rem; }

.pros-cons ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
  color: var(--ink-muted);
}

.pros { border-color: #a7dfd8 !important; background: #f0fbf9 !important; }
.cons { border-color: #e8cfcf !important; background: #fff8f8 !important; }

.faq {
  display: grid;
  gap: 0.55rem;
  margin: 1rem 0 1.5rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 0.75rem 1rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}

.faq-item p { margin: 0.65rem 0 0; color: var(--ink-muted); }

.review-next { margin-top: 1.5rem; font-size: 0.95rem; }
.review-next a { color: var(--brand-deep); font-weight: 600; }

.home-review { padding: 2.5rem 0; }

.updated-pill {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brand-deep);
  background: var(--bg-tint);
  border: 1px solid #b8e0db;
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  margin-bottom: 0.75rem;
}

.feature-list { padding-left: 1.15rem; color: var(--ink-muted); }

.converter-panel {
  max-width: 520px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.converter-row { margin-bottom: 1rem; }
.converter-row label { display: block; font-weight: 700; margin-bottom: 0.35rem; font-size: 0.9rem; }

.converter-row input,
.converter-row select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}

.converter-pair {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.75rem;
  align-items: end;
}

.converter-result {
  margin-top: 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-deep);
}

.site-footer {
  background: #0b2530;
  color: #c5d6de;
  padding: 2.5rem 0 1.5rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.4fr repeat(3, 1fr);
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

.footer-col h3 {
  color: var(--white);
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.45rem; }
.footer-col a { color: #c5d6de; text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.85rem;
  color: #9eb3bf;
}