:root {
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-muted: #565959;
  --color-border: #e0e0e0;
  --color-surface: #f7f8fa;
  --color-surface-strong: #eef2f5;
  --color-accent: #ff9900;
  --color-accent-dark: #e68a00;
  --color-link: #007185;
  --color-header: #131921;
  --color-header-alt: #232f3e;
  --shadow-card: 0 8px 24px rgba(15, 17, 17, 0.08);
  --shadow-card-hover: 0 14px 30px rgba(15, 17, 17, 0.16);
  --container: 1240px;
  --radius: 8px;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

a:hover {
  text-decoration: none;
}

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

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(15, 17, 17, 0.12);
}

.container {
  width: min(100% - 24px, var(--container));
  margin: 0 auto;
}

.topbar {
  background: var(--color-header);
  color: #ffffff;
  padding: 10px 0;
  font-size: 0.9rem;
}

.topbar .container,
.main-nav .container,
.hero .container,
.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.2px;
}

.main-nav {
  background: var(--color-header-alt);
  padding: 12px 0;
}

.main-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.main-nav a {
  color: #ffffff;
  font-weight: 700;
}

.main-nav nav a {
  padding: 10px 14px;
  border-radius: 999px;
}

.main-nav nav a:hover,
.main-nav nav a:focus-visible {
  background: rgba(255, 255, 255, 0.12);
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(255, 153, 0, 0.18), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #fff8ef 100%);
  padding: 56px 0 34px;
  border-bottom: 1px solid var(--color-border);
}

.hero-copy {
  flex: 1 1 640px;
}

.hero-card {
  flex: 0 1 360px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  background: #ffd814;
  color: #111111;
  padding: 7px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.82rem;
  margin-bottom: 14px;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin-top: 0;
  color: #0f1111;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  margin-bottom: 16px;
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  margin-bottom: 18px;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

p {
  margin: 0 0 16px;
}

.button,
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  width: 100%;
  background: var(--color-accent);
  color: #111111;
  border: 1px solid #f08804;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.08);
}

.button {
  width: auto;
  min-width: 220px;
}

.button:hover,
.cta-button:hover,
.button:focus-visible,
.cta-button:focus-visible {
  background: var(--color-accent-dark);
  color: #111111;
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(230, 138, 0, 0.22);
}

.section {
  padding: 40px 0;
}

.section-alt {
  background: linear-gradient(180deg, #ffffff 0%, var(--color-surface) 100%);
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card,
.brand-box,
.category-box,
.blog-card,
.faq-item,
.comparison-table,
.product-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.brand-box,
.category-box,
.blog-card,
.faq-item,
.card {
  padding: 22px;
}

.brand-box:hover,
.category-box:hover,
.blog-card:hover,
.faq-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: #d2d2d2;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.product-card {
  position: relative;
  overflow: hidden;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.product-badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: #cc0c39;
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 6px 10px;
}

.product-media {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: #ffffff;
  border-radius: 8px;
}

.product-card img {
  max-height: 200px;
  width: auto;
  object-fit: contain;
}

.product-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.35;
  min-height: 2.7em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.stars {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #f3a847;
  font-size: 1rem;
  margin: 0;
}

.meta-note,
.update-note,
.shipping-note {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.shipping-note {
  font-weight: 700;
  margin-top: -4px;
}

.comparison-table {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f0f2f2;
}

.content-columns {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-list li {
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

.footer {
  background: var(--color-header);
  color: #ffffff;
  padding: 28px 0;
  margin-top: 40px;
}

.footer-grid {
  flex-wrap: wrap;
}

.footer a {
  color: #ffffff;
}

.breadcrumbs {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.breadcrumbs a {
  color: var(--color-link);
}

.seo-copy,
.faq-list,
.article-content {
  display: grid;
  gap: 18px;
}

.notice {
  background: #fff8e1;
  border: 1px solid #f0d48a;
  padding: 14px 18px;
  border-radius: 12px;
  color: #5f4400;
}

@media (min-width: 720px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

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

@media (min-width: 1100px) {
  .product-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .topbar .container,
  .main-nav .container,
  .hero .container,
  .footer-grid,
  .content-columns {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    padding: 10px 0;
  }

  .main-nav nav {
    width: 100%;
  }

  .main-nav nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .hero {
    padding-top: 36px;
  }

  .hero-card,
  .hero-copy {
    width: 100%;
  }
}

@media (max-width: 640px) {
  body {
    line-height: 1.55;
  }

  h1 {
    max-width: none;
  }

  .button,
  .cta-button {
    width: 100%;
  }

  .section {
    padding: 32px 0;
  }

  .product-media {
    height: 180px;
  }
}