:root {
  --ink: #102a2e;
  --ink-soft: #476167;
  --paper: #f6f4ed;
  --paper-deep: #eae8de;
  --white: #fffef9;
  --teal: #087f78;
  --teal-dark: #075d59;
  --lime: #c9ee6a;
  --orange: #e98446;
  --line: rgba(16, 42, 46, 0.14);
  --shadow: 0 22px 60px rgba(16, 42, 46, 0.10);
  --radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: white;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 244, 237, 0.92);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 850;
  font-size: 1.25rem;
  letter-spacing: -0.035em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--teal);
  border-radius: 11px;
  font-size: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 680;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--teal-dark); }

.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 92px;
  background:
    radial-gradient(circle at 85% 20%, rgba(201, 238, 106, 0.52), transparent 24%),
    radial-gradient(circle at 78% 75%, rgba(8, 127, 120, 0.13), transparent 30%);
}

.hero::after {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  right: -150px;
  bottom: -250px;
  border: 72px solid rgba(8, 127, 120, 0.08);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 74px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--orange);
  border-radius: 99px;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 780px;
  margin-bottom: 26px;
  font-size: clamp(3rem, 7vw, 6.35rem);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4.6vw, 3.65rem);
}

h3 {
  margin-bottom: 12px;
  font-size: 1.32rem;
  letter-spacing: -0.025em;
}

.hero-copy {
  max-width: 660px;
  margin: 0 0 34px;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 21px;
  border: 1px solid var(--ink);
  border-radius: 13px;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 780;
}

.button-primary {
  color: white;
  background: var(--ink);
}

.button-primary:hover { background: var(--teal-dark); }

.button-secondary:hover { background: var(--white); }

.diagnostic-card {
  position: relative;
  min-height: 430px;
  padding: 30px;
  color: white;
  background: var(--ink);
  border-radius: 34px;
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}

.diagnostic-card::before,
.diagnostic-card::after {
  content: "";
  position: absolute;
  border: 2px solid rgba(201, 238, 106, 0.48);
  border-radius: 50%;
}

.diagnostic-card::before {
  width: 220px;
  height: 220px;
  top: 82px;
  right: 55px;
}

.diagnostic-card::after {
  width: 110px;
  height: 110px;
  top: 137px;
  right: 110px;
}

.screen-label {
  color: var(--lime);
  font-size: 0.73rem;
  font-weight: 820;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.signal {
  position: absolute;
  z-index: 2;
  top: 184px;
  right: 155px;
  width: 22px;
  height: 22px;
  background: var(--orange);
  border: 5px solid white;
  border-radius: 50%;
  box-shadow: 0 0 0 10px rgba(233, 132, 70, 0.18);
}

.card-readout {
  position: absolute;
  left: 30px;
  right: 30px;
  bottom: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.readout-item {
  padding-top: 13px;
  border-top: 1px solid rgba(255,255,255,0.18);
}

.readout-item strong,
.readout-item span { display: block; }

.readout-item strong { color: var(--lime); }
.readout-item span { color: rgba(255,255,255,0.68); font-size: 0.76rem; }

.section { padding: 90px 0; }
.section-white { background: var(--white); }
.section-dark { color: white; background: var(--ink); }

.section-intro {
  max-width: 680px;
  margin-bottom: 42px;
}

.section-intro p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.section-dark .section-intro p { color: rgba(255,255,255,0.68); }
.section-dark .eyebrow { color: var(--lime); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.topic-card {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.card-number {
  width: 44px;
  height: 44px;
  margin-bottom: 44px;
  display: grid;
  place-items: center;
  color: var(--teal-dark);
  background: var(--lime);
  border-radius: 50%;
  font-weight: 900;
}

.topic-card p {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.card-link {
  margin-top: auto;
  color: var(--teal-dark);
  font-size: 0.9rem;
  font-weight: 800;
}

.catalog-links {
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.catalog-links a { color: var(--teal-dark); font-weight: 750; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
}

.step { padding: 32px; background: var(--ink); }
.step span { color: var(--lime); font-size: 0.8rem; font-weight: 850; }
.step p { margin: 0; color: rgba(255,255,255,0.68); }

.guide-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
}

.guide-feature,
.guide-list {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-feature { background: var(--lime); }
.guide-feature p { max-width: 48ch; color: #2f4a45; }

.guide-list { background: var(--white); }
.guide-list a {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  font-weight: 720;
}

.guide-list a:last-child { border-bottom: 0; }
.guide-list a span { color: var(--teal); }

.notice {
  padding: 24px 26px;
  color: var(--ink-soft);
  background: rgba(8,127,120,0.07);
  border-left: 4px solid var(--teal);
  border-radius: 0 14px 14px 0;
}

.affiliate-note {
  margin: 24px 0;
  padding: 14px 17px;
  color: var(--ink-soft);
  background: #fff5e8;
  border: 1px solid rgba(233, 132, 70, 0.30);
  border-radius: 12px;
  font-size: 0.86rem;
}

.product-summary {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  margin: 38px 0;
}

.score-card,
.verdict-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.score-card { color: white; background: var(--teal-dark); }
.score-card .eyebrow { color: var(--lime); }
.score-card p { color: rgba(255,255,255,0.76); }
.verdict-card { background: var(--white); }
.verdict-card p:last-child { margin-bottom: 0; }

.fit-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 30px 0;
}

.fit-box {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.fit-box.good { background: rgba(201, 238, 106, 0.23); }
.fit-box.limit { background: rgba(233, 132, 70, 0.08); }
.fit-box h3 { font-size: 1.08rem; }

.spec-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.94rem;
}

.spec-table th,
.spec-table td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.spec-table th {
  color: var(--ink);
  background: rgba(8, 127, 120, 0.06);
  font-weight: 780;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }

.source-box {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 0.87rem;
}

.source-box p { margin: 6px 0; }

.cta-panel {
  margin: 42px 0;
  padding: 30px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
}

.cta-panel p { color: rgba(255,255,255,0.76); }
.cta-panel .button { color: var(--ink); background: var(--lime); border-color: var(--lime); }

.product-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 34px 0;
}

.product-actions .cta-panel {
  min-width: 0;
  margin: 0;
  padding: 24px;
}

.product-actions .cta-panel h3 { color: white; }
.product-actions .button { width: 100%; text-align: center; }

@media (max-width: 760px) {
  .product-summary,
  .fit-list,
  .product-actions { grid-template-columns: 1fr; }
}

.content {
  width: min(800px, calc(100% - 40px));
  margin-inline: auto;
  padding: 74px 0 100px;
}

.content h1 { font-size: clamp(2.55rem, 7vw, 5rem); }
.content h2 { margin-top: 52px; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.content h3 { margin-top: 34px; }
.content p, .content li { color: var(--ink-soft); }
.content li + li { margin-top: 8px; }
.content .lead { font-size: 1.25rem; }

.breadcrumb {
  margin-bottom: 28px;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.breadcrumb a { color: var(--teal-dark); }

.site-footer {
  padding: 54px 0 28px;
  color: rgba(255,255,255,0.72);
  background: #0a2326;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 0.7fr);
  gap: 36px;
  padding-bottom: 44px;
}

.footer-title { margin: 0 0 14px; color: white; font-weight: 850; }
.footer-copy { max-width: 36ch; margin: 0; font-size: 0.9rem; }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links li + li { margin-top: 8px; }
.footer-links a { text-decoration: none; font-size: 0.88rem; }
.footer-links a:hover { color: var(--lime); }

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.8rem;
}

@media (max-width: 900px) {
  .hero-grid,
  .guide-grid { grid-template-columns: 1fr; }
  .diagnostic-card { min-height: 360px; transform: none; }
  .card-grid,
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .container { width: min(100% - 28px, 1180px); }
  .nav { min-height: 70px; }
  .nav-links { display: none; }
  .hero { padding: 68px 0 64px; }
  .section { padding: 66px 0; }
  .diagnostic-card { min-height: 330px; padding: 24px; }
  .card-readout { left: 24px; right: 24px; bottom: 22px; }
  .readout-item strong { font-size: 0.82rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}