:root {
  color-scheme: light;
  --ink: #162124;
  --muted: #607177;
  --line: #d8e0df;
  --paper: #f7f7f2;
  --panel: #ffffff;
  --mint: #bfe8d8;
  --teal: #006c67;
  --amber: #f6b64c;
  --coral: #ee6c4d;
  --blue: #276ef1;
  --shadow: 0 24px 70px rgba(19, 36, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(191, 232, 216, 0.5), transparent 420px),
    var(--paper);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 52px);
  background: rgba(247, 247, 242, 0.86);
  border-bottom: 1px solid rgba(216, 224, 223, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 800;
  letter-spacing: 0;
}

.brand canvas {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.nav a {
  padding: 10px 12px;
  border-radius: 8px;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  outline: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100vh - 72px);
  padding: clamp(36px, 6vw, 86px) clamp(18px, 5vw, 72px) 34px;
}

.hero-copy {
  max-width: 840px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(44px, 7vw, 94px);
  line-height: 0.95;
}

.hero-text {
  max-width: 760px;
  margin: 28px 0 0;
  color: #415357;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 12px 0 rgba(0, 108, 103, 0.18);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.64);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: 3px solid rgba(39, 110, 241, 0.22);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 760px;
  margin: 40px 0 0;
}

.hero-facts div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-facts dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 8px 0 0;
  font-size: 18px;
  font-weight: 850;
}

.hero-panel {
  position: relative;
  min-height: 560px;
  padding: 24px;
  overflow: hidden;
  background: #fefcf6;
  border: 1px solid var(--ink);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.panel-head strong {
  color: var(--ink);
}

.signal-visual {
  position: relative;
  height: 330px;
  margin-top: 26px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(39, 110, 241, 0.12), rgba(238, 108, 77, 0.14)),
    radial-gradient(circle at 50% 50%, rgba(191, 232, 216, 0.85), rgba(191, 232, 216, 0.12) 52%, transparent 53%);
  border: 1px solid var(--line);
}

.ring,
.tracker-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 999px;
}

.ring {
  border: 2px solid rgba(0, 108, 103, 0.38);
}

.ring-one {
  width: 110px;
  height: 110px;
}

.ring-two {
  width: 190px;
  height: 190px;
}

.ring-three {
  width: 270px;
  height: 270px;
}

.tracker-dot {
  width: 78px;
  height: 78px;
  background:
    radial-gradient(circle at 34% 28%, #fff 0 10px, transparent 11px),
    linear-gradient(145deg, var(--blue), var(--teal));
  box-shadow: 0 18px 42px rgba(0, 108, 103, 0.26);
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.score-grid div {
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.score-grid span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.score-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 16px;
}

.section {
  padding: 78px clamp(18px, 5vw, 72px);
}

.summary-band {
  display: grid;
  grid-template-columns: 0.75fr 1fr;
  gap: 26px;
  background: var(--ink);
  color: #fff;
}

.summary-band .eyebrow {
  color: var(--amber);
}

.summary-band h2,
.section-heading h2 {
  margin: 0;
  font-size: clamp(32px, 4.2vw, 58px);
  line-height: 1.02;
}

.summary-band p:not(.eyebrow) {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 19px;
  line-height: 1.55;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

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

.pick-card {
  min-height: 260px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.pick-card.featured {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(246, 182, 76, 0.18), transparent 42%),
    #fff;
  border-color: var(--ink);
}

.pick-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pick-meta span {
  width: fit-content;
  padding: 6px 10px;
  color: #fff;
  background: var(--teal);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.pick-meta strong {
  font-size: 25px;
  line-height: 1.08;
}

.pick-card p,
.pick-card li,
.guide-list p,
.testing-grid p,
.faq-list p {
  color: #4d5e62;
  line-height: 1.6;
}

.pick-card ul {
  margin: 18px 0 0;
  padding-left: 20px;
}

.compare-section {
  background: #eef6f2;
}

.comparison-table {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--ink);
  border-radius: 8px;
}

.table-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.1fr 0.9fr 1.2fr;
}

.table-row > div {
  min-width: 0;
  padding: 16px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.table-row > div:first-child {
  border-left: 0;
  font-weight: 850;
}

.table-row.table-head {
  color: #fff;
  background: var(--ink);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
}

.table-row.table-head > div {
  border-top: 0;
  border-color: rgba(255, 255, 255, 0.16);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
}

.sticky-heading {
  position: sticky;
  top: 104px;
  align-self: start;
}

.guide-list {
  display: grid;
  gap: 14px;
}

.guide-list article {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.guide-list span {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--ink);
  background: var(--amber);
  border-radius: 999px;
  font-weight: 900;
}

.guide-list h3,
.testing-grid h3 {
  margin: 0;
  font-size: 22px;
}

.guide-list p,
.testing-grid p {
  margin: 8px 0 0;
}

.testing-section {
  background: #fffaf0;
}

.testing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.testing-grid div {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 980px;
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  font-size: 18px;
  font-weight: 850;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 30px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.72);
  background: var(--ink);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #fff;
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .summary-band,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-panel {
    min-height: 460px;
  }

  .pick-grid,
  .testing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pick-card.featured {
    grid-column: span 1;
  }

  .sticky-heading {
    position: static;
  }

  .table-row {
    grid-template-columns: 1fr;
  }

  .table-row > div {
    border-left: 0;
  }

  .table-row.table-head {
    display: none;
  }
}

@media (max-width: 640px) {
  .brand span {
    font-size: 15px;
  }

  .hero-facts,
  .pick-grid,
  .testing-grid,
  .score-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    padding: 18px;
  }

  .signal-visual {
    height: 260px;
  }

  .guide-list article {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}