:root {
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-strong: #eef3ef;
  --text: #172026;
  --muted: #5d6a67;
  --line: #dce3df;
  --green: #0f766e;
  --green-dark: #0b4f4a;
  --blue: #2357a5;
  --amber: #a45113;
  --ink: #111827;
  --shadow: 0 18px 40px rgba(24, 39, 35, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.75rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  background: rgba(247, 248, 245, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  left: 0;
  min-height: 72px;
  padding: 0 5vw;
  position: sticky;
  right: 0;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 0.65rem;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  align-items: center;
  background: var(--ink);
  border-radius: 7px;
  color: #ffffff;
  display: inline-flex;
  font-size: 0.78rem;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.nav {
  align-items: center;
  display: flex;
  gap: 1.35rem;
  font-size: 0.95rem;
}

.nav a,
.footer-links a,
.text-link {
  color: var(--text);
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover,
.footer-links a:hover,
.text-link:hover {
  color: var(--green-dark);
}

.header-cta,
.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-height: 44px;
  padding: 0.78rem 1rem;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.header-cta,
.button.primary {
  background: var(--green);
  color: #ffffff;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--ink);
}

.button.compact {
  background: var(--ink);
  color: #ffffff;
  min-height: 40px;
  padding: 0.62rem 0.85rem;
  width: max-content;
}

.header-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.hero {
  min-height: 68vh;
  overflow: hidden;
  position: relative;
}

.hero-home {
  background: #13211f url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=1800&q=82") center / cover no-repeat;
}

.hero-page {
  background-position: center;
  background-size: cover;
  min-height: 50vh;
}

.hero-ai {
  background-image: url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1800&q=82");
}

.hero-gear {
  background-image: url("https://images.unsplash.com/photo-1593062096033-9a26b09da705?auto=format&fit=crop&w=1800&q=82");
}

.hero-compare {
  background-image: url("https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1800&q=82");
}

.hero-review {
  background-image: url("https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?auto=format&fit=crop&w=1800&q=82");
}

.hero-overlay {
  background: linear-gradient(90deg, rgba(11, 18, 17, 0.82), rgba(11, 18, 17, 0.46), rgba(11, 18, 17, 0.18));
  inset: 0;
  position: absolute;
}

.hero-content {
  color: #ffffff;
  max-width: 760px;
  padding: 9rem 5vw 6rem;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(3.1rem, 4rem, 5.4rem);
  letter-spacing: 0;
  line-height: 0.95;
  margin: 0.3rem 0 1.2rem;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.18rem;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.eyebrow {
  color: var(--amber);
  font-size: 0.77rem;
  font-weight: 900;
  letter-spacing: 0;
  margin: 0 0 0.55rem;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #f6c472;
}

.section {
  padding: 5rem 5vw;
}

.intro-band,
.split-band {
  background: var(--surface);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2rem;
}

.section-heading h2,
.split-band h2,
.article-body h2 {
  font-size: clamp(2rem, 2.7rem, 3rem);
  line-height: 1.05;
  margin: 0 0 0.8rem;
}

.section-heading p,
.article-body p,
.article-body li {
  color: var(--muted);
}

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

.pick-card,
.product-card,
.article-card,
.note-box,
.summary-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.pick-card {
  overflow: hidden;
}

.pick-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
}

.pick-body,
.article-card,
.summary-card {
  padding: 1.35rem;
}

.pick-body h3,
.product-card h3,
.article-card h3,
.summary-card h3 {
  font-size: 1.18rem;
  line-height: 1.25;
  margin: 0.2rem 0 0.55rem;
}

.tag {
  color: var(--amber);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  margin: 0;
  text-transform: uppercase;
}

.tag.teal {
  color: var(--green);
}

.tag.blue {
  color: var(--blue);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.3rem;
}

.filter-button {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  min-height: 42px;
  padding: 0.58rem 0.9rem;
}

.filter-button.active {
  background: var(--ink);
  color: #ffffff;
}

.product-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 230px;
  padding: 1.25rem;
}

.product-card[hidden] {
  display: none;
}

.split-band {
  align-items: start;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

.model-list {
  display: grid;
  gap: 0.8rem;
}

.model-list div {
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: 140px 1fr;
  padding-bottom: 0.8rem;
}

.model-list span {
  color: var(--muted);
}

.article-card {
  box-shadow: none;
}

.article-card span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.article-card a {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.site-footer {
  background: var(--ink);
  color: #ffffff;
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.1fr 0.8fr 1.1fr;
  padding: 3rem 5vw;
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.78);
}

.footer-brand {
  color: #ffffff;
}

.footer-brand .brand-mark {
  background: #ffffff;
  color: var(--ink);
}

.footer-links {
  display: grid;
  gap: 0.7rem;
}

.disclosure {
  font-size: 0.92rem;
}

.breadcrumbs {
  color: rgba(255, 255, 255, 0.82);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.9rem;
  gap: 0.45rem;
  margin-bottom: 1.3rem;
}

.breadcrumbs a {
  color: #ffffff;
}

.article-layout {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 1fr) 300px;
  margin: 0 auto;
  max-width: 1180px;
  padding: 4rem 5vw;
}

.legal-layout {
  grid-template-columns: minmax(0, 850px);
  justify-content: center;
}

.article-body {
  min-width: 0;
}

.article-body h2 {
  margin-top: 3rem;
}

.article-body h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.article-body a {
  color: var(--green-dark);
  font-weight: 800;
}

.summary-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 1.5rem 0 2rem;
}

.summary-card {
  box-shadow: none;
}

.note-box {
  background: var(--surface-strong);
  box-shadow: none;
  margin: 1.3rem 0;
  padding: 1.25rem;
}

.comparison-table {
  border-collapse: collapse;
  margin: 1.5rem 0;
  width: 100%;
}

.comparison-table th,
.comparison-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.95rem;
  text-align: left;
  vertical-align: top;
}

.comparison-table th {
  background: var(--surface-strong);
  color: var(--text);
}

.toc {
  align-self: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.1rem;
  position: sticky;
  top: 96px;
}

.toc strong {
  display: block;
  margin-bottom: 0.6rem;
}

.toc a {
  color: var(--muted);
  display: block;
  font-size: 0.92rem;
  padding: 0.32rem 0;
  text-decoration: none;
}

.toc a:hover {
  color: var(--green-dark);
}

.callout-cta {
  align-items: center;
  background: var(--ink);
  border-radius: 8px;
  color: #ffffff;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  margin: 2rem 0;
  padding: 1.4rem;
}

.callout-cta p {
  color: rgba(255, 255, 255, 0.78);
  margin: 0.25rem 0 0;
}

.not-found {
  min-height: 54vh;
  max-width: 760px;
}

.not-found h1 {
  font-size: clamp(2.6rem, 4rem, 4.7rem);
  line-height: 1;
  margin: 0.2rem 0 1rem;
}

code {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--green-dark);
  font-size: 0.92em;
  padding: 0.08rem 0.28rem;
}

@media (max-width: 960px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.9rem;
    padding-bottom: 1rem;
    padding-top: 1rem;
    position: static;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero-content {
    padding-top: 7rem;
  }

  .pick-grid,
  .product-grid,
  .article-grid,
  .summary-grid,
  .article-layout,
  .split-band,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: auto;
  }

  .header-cta {
    width: 100%;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .hero-content {
    padding: 5.5rem 5vw 4rem;
  }

  .button,
  .hero-actions {
    width: 100%;
  }

  .model-list div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .comparison-table {
    display: block;
    overflow-x: auto;
    white-space: normal;
  }

  .comparison-table th,
  .comparison-table td {
    min-width: 160px;
  }
}