/* =========================================================
   AMP JOINT 10 — Design System
   Palette:  #021a1d (deep teal) / #002F33 (secondary teal)
             #FFFFFF / #F5F8F7 / #E5F0EF / #173437 / #5E7173
             Accent:  #B9853C (warm brass) — echoes the guarantee gold
   Display face: "Fraunces" (editorial slab-serif, used with restraint)
   Body face:    "Inter"
   Signature:    the "Four Dimensions Ring" — a quartered circle motif
                 representing Anti-Inflammatory / Cartilage / Lubrication /
                 Maintenance, reused as a section divider + hero device.
   ========================================================= */

:root {
  --teal-900: #021a1d;
  --teal-800: #002F33;
  --teal-700: #0b3d40;
  --white: #ffffff;
  --bg-light: #f5f8f7;
  --soft-teal: #e5f0ef;
  --text-dark: #173437;
  --text-muted: #5e7173;
  --gold: #b9853c;
  --gold-light: #e0b877;
  --line: #d8e6e4;
  --success: #2f7d5e;

  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(2, 26, 29, 0.06);
  --shadow-md: 0 12px 32px rgba(2, 26, 29, 0.12);
  --shadow-lg: 0 24px 60px rgba(2, 26, 29, 0.18);
  --container: 1180px;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--teal-900);
  line-height: 1.15;
  font-weight: 600;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Utility ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--gold);
  display: inline-block;
}
.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--dark {
  background: var(--teal-900) !important;
  color: var(--soft-teal);
}
.section--dark h2, .section--dark h3, .section--dark .eyebrow-label { color: var(--white); }
.section--dark p { color: #b7cccb; }
.section--teal { background: var(--teal-800); color: var(--soft-teal); }
.section--teal h2, .section--teal h3 { color: var(--white); }
.section--teal p { color: #bcd2d1; }
.section--soft { background: var(--soft-teal); }
.section--light { background: var(--bg-light); }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 14px; }
.section-head p { color: var(--text-muted); font-size: 1.05rem; }
.section--dark .section-head p, .section--teal .section-head p { color: #b7cccb; }

.text-center { text-align: center; }
.muted { color: var(--text-muted); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--gold);
  color: var(--teal-900); padding: 10px 18px; z-index: 999; font-weight: 700;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 2px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color .18s ease;
  min-height: 48px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--teal-900);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }
.btn-dark-outline {
  background: transparent;
  border-color: var(--teal-900);
  color: var(--teal-900);
}
.btn-dark-outline:hover { background: var(--teal-900); color: var(--white); }
.btn-block { width: 100%; }
.btn-sm { padding: 10px 20px; font-size: 0.88rem; min-height: 40px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 200;
  background: rgba(2, 26, 29, 0.97);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.28rem;
  color: var(--white);
}
.brand .ring {
  width: 30px; height: 30px; border-radius: 50%;
  border: 3px solid var(--gold);
  position: relative; flex-shrink: 0;
}
.brand .ring::after {
  content: ""; position: absolute; inset: 6px; border-radius: 50%;
  border-top: 3px solid var(--white);
}
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  color: #d7e7e6; font-weight: 600; font-size: 0.94rem;
  padding: 6px 2px; border-bottom: 2px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--white); border-color: var(--gold); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none; background: none; border: none; color: var(--white);
  font-size: 1.6rem; padding: 4px 8px;
}
@media (max-width: 900px) {
  .nav-links { position: absolute; top: 100%; left: 0; right: 0; background: var(--teal-900);
    flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 24px 20px;
    border-top: 1px solid rgba(255,255,255,0.08); display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-cta .btn-primary.btn-sm { display: none; }
}

/* Breadcrumbs */
.breadcrumbs {
  background: var(--bg-light);
  border-bottom: 1px solid var(--line);
  font-size: 0.85rem;
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 0; color: var(--text-muted); }
.breadcrumbs a { color: var(--teal-800); font-weight: 600; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--text-muted); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(ellipse at top right, #0b3d40 0%, var(--teal-900) 55%);
  color: var(--white);
  padding: 74px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  width: 620px; height: 620px;
  border: 90px solid rgba(185, 133, 60, 0.07);
  border-radius: 50%;
  top: -220px; right: -180px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.4rem);
  color: var(--white);
  margin-bottom: 20px;
}
.hero h1 em { color: var(--gold-light); font-style: normal; }
.hero-lede { font-size: 1.14rem; color: #c3d7d6; max-width: 540px; margin-bottom: 32px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 34px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 22px; }
.hero-badge { display: flex; align-items: center; gap: 9px; font-size: 0.86rem; color: #b7cccb; font-weight: 600; }
.hero-badge svg { flex-shrink: 0; }
.hero-media { position: relative; }
.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative; z-index: 1;
}
.hero-media .float-card {
  position: absolute; bottom: -22px; left: -22px;
  background: var(--white); color: var(--teal-900);
  border-radius: var(--radius-md); padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 12px;
  font-weight: 700; font-size: 0.92rem; z-index: 2;
  max-width: 240px;
}
.hero-media .float-card .dot {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--soft-teal); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; max-width: 420px; margin: 0 auto; }
  .hero-media .float-card { left: 12px; bottom: -18px; }
}

/* ---------- Marquee strip ---------- */
.trust-strip {
  background: var(--teal-800);
  padding: 18px 0;
  color: var(--soft-teal);
}
.trust-strip .container { display: flex; flex-wrap: wrap; gap: 28px; justify-content: center; align-items: center; }
.trust-strip span { display: flex; align-items: center; gap: 8px; font-size: 0.86rem; font-weight: 700; letter-spacing: 0.03em; }

/* ---------- Formula ring / Four Dimensions signature ---------- */
.dims-wrap {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) { .dims-wrap { grid-template-columns: 1fr; } }

.ring-diagram { position: relative; width: 100%; max-width: 380px; aspect-ratio: 1; margin: 0 auto; }
.ring-diagram svg { width: 100%; height: 100%; }
.ring-diagram .ring-center {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  flex-direction: column; text-align: center; pointer-events: none;
}
.ring-diagram .ring-center strong { font-family: var(--font-display); font-size: 1.5rem; color: var(--teal-900); display:block; }
.ring-diagram .ring-center span { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.dims-list { display: grid; gap: 18px; }
.dim-card {
  display: grid; grid-template-columns: auto 1fr; gap: 16px;
  padding: 20px; border-radius: var(--radius-md);
  background: var(--white); border: 1px solid var(--line);
  transition: box-shadow .2s ease, transform .2s ease;
}
.dim-card:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.dim-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.dim-card h3 { font-size: 1.08rem; margin-bottom: 4px; }
.dim-card p { color: var(--text-muted); font-size: 0.94rem; }
.dim-card .dim-ing { font-size: 0.8rem; color: var(--gold); font-weight: 700; margin-top: 6px; letter-spacing: 0.02em; }

.dim-1 .dim-icon { background: #fbe9d9; }
.dim-2 .dim-icon { background: var(--soft-teal); }
.dim-3 .dim-icon { background: #e4f0fb; }
.dim-4 .dim-icon { background: #ece5f7; }

/* ---------- Ingredient cards / grid ---------- */
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}
.ing-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
  position: relative;
  overflow: hidden;
}
.ing-card .ing-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 5px 10px; border-radius: 999px;
  margin-bottom: 14px;
}
.tag-anti { background: #fbe9d9; color: #9a5b12; }
.tag-cart { background: var(--soft-teal); color: var(--teal-800); }
.tag-lube { background: #e4f0fb; color: #2860a3; }
.tag-maint { background: #ece5f7; color: #5c3d9c; }
.ing-card h3 { font-size: 1.18rem; margin-bottom: 10px; }
.ing-card p { color: var(--text-muted); font-size: 0.95rem; }
.ing-card .ing-icon {
  width: 54px; height: 54px; border-radius: 14px; background: var(--bg-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}

/* ---------- Category section blocks (ingredients page) ---------- */
.ing-group { margin-bottom: 64px; }
.ing-group:last-child { margin-bottom: 0; }
.ing-group-head { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.ing-group-head .num {
  font-family: var(--font-display); font-size: 1.4rem; color: var(--gold);
  border: 2px solid var(--gold); width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.ing-group-head h2 { font-size: 1.5rem; margin-bottom: 2px; }
.ing-group-head p { color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Steps ---------- */
.steps-list { counter-reset: step; display: grid; gap: 20px; }
.step-item { display: grid; grid-template-columns: auto 1fr; gap: 18px; }
.step-item .num {
  counter-increment: step; content: counter(step);
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--teal-900); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-family: var(--font-display); flex-shrink: 0;
}
.step-item .num::before { content: counter(step); }

/* ---------- Cards / benefit grid ---------- */
.benefit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.benefit-card {
  padding: 28px 24px; border-radius: var(--radius-md);
  background: var(--white); border: 1px solid var(--line);
  text-align: left;
}
.benefit-card .ic { width: 46px; height: 46px; border-radius: 12px; background: var(--soft-teal); display:flex;align-items:center;justify-content:center; margin-bottom: 16px; }
.benefit-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.benefit-card p { font-size: 0.92rem; color: var(--text-muted); }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  align-items: stretch;
}
@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; } }
.price-card {
  background: var(--white); border: 2px solid var(--line);
  border-radius: var(--radius-lg); padding: 32px 26px;
  text-align: center; position: relative; display: flex; flex-direction: column;
}
.price-card.featured {
  border-color: var(--gold);
  background: var(--teal-900); color: var(--white);
  box-shadow: var(--shadow-lg);
  transform: translateY(-10px);
}
.price-card.featured p, .price-card.featured .muted { color: #b7cccb; }
.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--gold); color: var(--teal-900);
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 999px;
}
.price-card .supply { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }
.price-card.featured .supply { color: #b7cccb; }
.price-card .amount { font-family: var(--font-display); font-size: 2.6rem; color: var(--teal-900); margin-bottom: 2px; }
.price-card.featured .amount { color: var(--white); }
.price-card .per { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 20px; }
.price-card .total { font-size: 0.9rem; font-weight: 700; margin-bottom: 22px; }
.price-card .ship { color: var(--success); font-weight: 700; }
.price-card.featured .ship { color: #7fe3b4; }
.price-card ul { text-align: left; margin: 20px 0; display: grid; gap: 10px; font-size: 0.9rem; }
.price-card ul li { display: flex; gap: 10px; align-items: flex-start; }

/* ---------- Guarantee ---------- */
.guarantee-block {
  display: grid; grid-template-columns: auto 1fr; gap: 40px; align-items: center;
}
@media (max-width: 800px) { .guarantee-block { grid-template-columns: 1fr; text-align: center; } }
.guarantee-block img { max-width: 200px; margin: 0 auto; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 14px; max-width: 820px; }
.faq-item {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; text-align: left; background: none; border: none;
  font-weight: 700; font-size: 1rem; color: var(--teal-900);
}
.faq-q .plus { font-size: 1.4rem; color: var(--gold); transition: transform .2s ease; flex-shrink: 0; margin-left: 16px; }
.faq-item[open] .faq-q .plus { transform: rotate(45deg); }
.faq-a { padding: 0 24px 22px; color: var(--text-muted); font-size: 0.96rem; }
.faq-item summary { cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }

/* ---------- Blog cards ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; }
.blog-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md);
  overflow: hidden; display: flex; flex-direction: column;
  transition: box-shadow .2s ease, transform .2s ease;
}
.blog-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.blog-card .thumb {
  height: 168px; background: linear-gradient(135deg, var(--teal-800), var(--teal-900));
  display: flex; align-items: center; justify-content: center; position: relative;
}
.blog-card .thumb .cat {
  position: absolute; top: 14px; left: 14px; background: var(--gold); color: var(--teal-900);
  font-size: 0.68rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 5px 12px; border-radius: 999px;
}
.blog-card .body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.blog-card .meta { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .04em; }
.blog-card h3 { font-size: 1.16rem; margin-bottom: 10px; }
.blog-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 18px; flex: 1; }
.blog-card .read-more { font-weight: 700; color: var(--teal-800); font-size: 0.92rem; display: inline-flex; align-items: center; gap: 6px; }
.blog-card:hover .read-more { color: var(--gold); }

/* ---------- Article typography ---------- */
.article-shell { padding: 56px 0 90px; }
.article-header { max-width: 780px; margin: 0 auto 40px; }
.article-header .cat { color: var(--gold); font-weight: 800; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px; display:block; }
.article-header h1 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); margin-bottom: 16px; }
.article-header .meta { color: var(--text-muted); font-size: 0.92rem; }
.article-body { max-width: 780px; margin: 0 auto; font-size: 1.05rem; }
.article-body h2 { font-size: 1.5rem; margin: 44px 0 16px; }
.article-body h3 { font-size: 1.2rem; margin: 32px 0 12px; }
.article-body p { margin-bottom: 18px; color: var(--text-dark); }
.article-body ul, .article-body ol { margin: 0 0 20px 22px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--teal-800); font-weight: 700; text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 3px; }
.article-body a:hover { color: var(--gold); }
.article-body blockquote {
  border-left: 4px solid var(--gold); padding: 6px 24px; margin: 28px 0;
  font-style: italic; color: var(--text-muted); font-size: 1.05rem;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 0.94rem; }
.article-body th, .article-body td { padding: 12px 14px; border: 1px solid var(--line); text-align: left; }
.article-body th { background: var(--soft-teal); color: var(--teal-900); }
.callout {
  background: var(--soft-teal); border-radius: var(--radius-md); padding: 22px 26px;
  margin: 30px 0; font-size: 0.96rem; border: 1px solid #cfe4e2;
}
.callout strong { color: var(--teal-800); }
.article-nav-links {
  display: flex; flex-wrap: wrap; gap: 12px; margin: 44px 0;
  padding: 24px; background: var(--bg-light); border-radius: var(--radius-md);
}
.article-nav-links a {
  background: var(--white); border: 1px solid var(--line); padding: 8px 16px;
  border-radius: 999px; font-size: 0.86rem; font-weight: 700; color: var(--teal-800);
}
.article-nav-links a:hover { border-color: var(--gold); color: var(--gold); }
.author-box {
  display: flex; gap: 16px; align-items: center; margin-top: 50px; padding-top: 30px;
  border-top: 1px solid var(--line);
}
.author-box .av {
  width: 52px; height: 52px; border-radius: 50%; background: var(--teal-900);
  display: flex; align-items: center; justify-content: center; color: var(--white); font-weight: 700;
  flex-shrink: 0; font-family: var(--font-display);
}
.author-box p { font-size: 0.86rem; color: var(--text-muted); margin: 0; }

/* ---------- Article images ---------- */
.article-img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 8px 0 30px;
}
.article-img-figure { margin: 8px 0 34px; }
.article-img-figure img { border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.article-img-figure figcaption {
  font-size: 0.82rem; color: var(--text-muted); margin-top: 10px; text-align: center;
}

/* ---------- Comparison table ---------- */
.compare-table { overflow-x: auto; }
.compare-table table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--radius-md); overflow: hidden; min-width: 560px; }
.compare-table th, .compare-table td { padding: 16px 20px; border-bottom: 1px solid var(--line); text-align: left; font-size: 0.94rem; }
.compare-table th { background: var(--teal-900); color: var(--white); font-family: var(--font-display); font-weight: 600; }
.compare-table td:first-child, .compare-table th:first-child { font-weight: 700; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--teal-900);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; align-items: center;
  position: relative; overflow: hidden;
}
.cta-banner::after {
  content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%;
  border: 60px solid rgba(185,133,60,0.08); right: -120px; bottom: -160px;
}
.cta-banner h2 { color: var(--white); font-size: clamp(1.5rem, 2.6vw, 2rem); max-width: 480px; position: relative; z-index: 1; }
.cta-banner p { color: #b7cccb; margin-top: 8px; position: relative; z-index: 1; }
.cta-banner .actions { display: flex; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.site-footer { background: var(--teal-900); color: #9db8b6; padding: 64px 0 30px; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; margin-bottom: 48px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { font-size: 0.9rem; max-width: 300px; margin-bottom: 18px; }
.footer-col h4 { color: var(--white); font-size: 0.86rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; font-family: var(--font-body); }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { font-size: 0.92rem; }
.footer-col a:hover { color: var(--white); }
.footer-legal {
  border-top: 1px solid rgba(255,255,255,0.08); padding-top: 26px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; font-size: 0.82rem;
}
.footer-disclaimer {
  font-size: 0.8rem; line-height: 1.7; color: #7f9c9a; max-width: 980px;
  border-top: 1px solid rgba(255,255,255,0.08); margin-top: 30px; padding-top: 26px;
}

/* ---------- 404 ---------- */
.error-page {
  min-height: 60vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 90px 24px;
}
.error-page .ring-diagram { margin-bottom: 20px; }
.error-page h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); margin-bottom: 14px; }
.error-page .code { font-family: var(--font-display); font-size: 5.5rem; color: var(--soft-teal); line-height: 1; }

/* ---------- Reviews page specific ---------- */
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 700px) { .pros-cons { grid-template-columns: 1fr; } }
.pros-cons > div { padding: 26px; border-radius: var(--radius-md); }
.pros { background: var(--soft-teal); }
.cons { background: var(--bg-light); border: 1px solid var(--line); }
.pros h3, .cons h3 { font-size: 1.1rem; margin-bottom: 14px; }
.pros ul li, .cons ul li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 0.94rem; }

/* ---------- Disclaimer box ---------- */
.disclaimer-box {
  background: var(--bg-light); border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 24px 26px; font-size: 0.88rem; color: var(--text-muted); line-height: 1.7;
}
.disclaimer-box strong { color: var(--text-dark); }

/* ---------- Misc responsive ---------- */
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .cta-banner { padding: 40px 26px; flex-direction: column; align-items: flex-start; }
  .guarantee-block img { max-width: 150px; }
}

/* === network upgrade: popup + sources === */
.np-pop {
  position: fixed; left: 18px; bottom: 18px; z-index: 60;
  display: flex; align-items: center; gap: 12px;
  width: 320px; max-width: calc(100vw - 36px);
  padding: 12px 38px 12px 12px;
  background: #fff; color: #1c1c1c;
  border: 1px solid rgba(0,0,0,0.10); border-radius: 16px;
  box-shadow: 0 18px 44px -18px rgba(0,0,0,0.45);
  font-family: inherit; text-align: left;
  transform: translateX(calc(-100% - 24px)); opacity: 0; visibility: hidden;
  transition: transform .5s cubic-bezier(.22,1,.36,1), opacity .5s ease, visibility .5s;
}
.np-pop.is-in { transform: translateX(0); opacity: 1; visibility: visible; }
.np-pop img {
  width: 52px; height: auto; flex: 0 0 52px;
  border-radius: 10px; border: 1px solid rgba(0,0,0,0.08); background: #fafafa;
}
.np-pop-body { min-width: 0; }
.np-pop-name { font-weight: 700; font-size: .9rem; line-height: 1.3; }
.np-pop-what { font-size: .82rem; opacity: .72; line-height: 1.4; }
.np-pop-when { font-size: .68rem; letter-spacing: .04em; text-transform: uppercase; opacity: .6; margin-top: 2px; }
.np-pop-close {
  position: absolute; top: 6px; right: 6px; width: 26px; height: 26px;
  border: 0; border-radius: 50%; background: transparent; color: inherit;
  opacity: .5; font-size: 1rem; line-height: 1; cursor: pointer;
}
.np-pop-close:hover { opacity: 1; background: rgba(0,0,0,0.06); }
@media (max-width: 560px) {
  /* not edge-to-edge on phones: a full-bleed card sits on top of the
     full-width CTA buttons these pages use, so leave the right side free */
  .np-pop { left: 10px; right: auto; bottom: 10px; width: min(300px, calc(100vw - 84px)); max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  .np-pop { transition: opacity .2s ease, visibility .2s; transform: none; }
}

.np-sources { padding: 56px 0; }
.np-sources .np-wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.np-sources h2 { margin: 0 0 10px; }
.np-sources .np-intro { opacity: .75; max-width: 62ch; margin: 0 0 26px; }
.np-ref-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.np-ref-list li { padding-left: 16px; border-left: 3px solid rgba(0,0,0,0.12); font-size: .95rem; }
.np-ref-list a { text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.np-ref-src { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; opacity: .6; margin-top: 2px; }

/* === network upgrade: final CTA === */
.np-final { padding: 64px 0; }
.np-final .np-wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.np-final-inner {
  display: grid; grid-template-columns: minmax(0,300px) minmax(0,1fr);
  gap: 40px; align-items: center;
  background: #14100c; color: #f6efe7;
  border-radius: 24px; padding: 44px 40px;
}
.np-final-inner h2 { color: #fff; margin: 0 0 12px; }
.np-final-inner p { opacity: .82; margin: 0 0 24px; max-width: 56ch; }
.np-final-shot img {
  width: 100%; height: auto;          /* natural aspect ratio, never cropped */
  max-width: 300px; margin: 0 auto;
  filter: drop-shadow(0 18px 40px rgba(0,0,0,.5));
}
.np-final-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 34px; border-radius: 999px; font-weight: 700; font-size: 1rem;
  background: #f17e12; color: #fff; text-decoration: none;
  box-shadow: 0 12px 30px -12px rgba(241,126,18,.8);
}
.np-final-btn:hover { filter: brightness(1.07); }
.np-final-note { font-size: .78rem; letter-spacing: .04em; text-transform: uppercase; opacity: .6; margin: 18px 0 0; }
@media (max-width: 820px) {
  .np-final-inner { grid-template-columns: 1fr; text-align: center; padding: 34px 22px; }
  .np-final-inner p { margin-left: auto; margin-right: auto; }
  .np-final-shot img { max-width: 220px; }
}

/* === network upgrade: silo cross-links === */
.np-cross { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 32px 0; }
.np-cross a {
  display: block; padding: 16px 18px; border: 1px solid rgba(0,0,0,.12);
  border-radius: 14px; text-decoration: none; color: inherit; background: rgba(0,0,0,.015);
  transition: border-color .15s ease, transform .15s ease;
}
.np-cross a:hover { border-color: rgba(0,0,0,.35); transform: translateY(-2px); }
.np-cross span { display: block; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; opacity: .55; margin-bottom: 5px; }
.np-cross strong { font-weight: 700; font-size: .98rem; line-height: 1.3; }
.np-crumbs { font-size: .85rem; opacity: .75; margin: 0 0 4px; }
.np-crumbs a { text-decoration: none; color: inherit; border-bottom: 1px solid rgba(0,0,0,.25); }
.np-crumbs .sep { opacity: .45; margin: 0 7px; }