:root {
  --bg: #0b0c10;
  --panel: #151821;
  --panel-2: #1d2230;
  --text: #f4f7fb;
  --muted: #aeb7c6;
  --line: #303849;
  --accent: #ffcf4a;
  --accent-2: #e85b45;
  --accent-3: #58d2b5;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 12, 16, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.hero {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(232, 91, 69, 0.22), transparent 38%),
    linear-gradient(150deg, rgba(88, 210, 181, 0.15), transparent 45%),
    #10131a;
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 54px 22px 42px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 32px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 800;
  margin: 0 0 10px;
}

h1,
h2,
h3 {
  line-height: 1.24;
  letter-spacing: 0;
}

h1 {
  font-size: 44px;
  margin: 0 0 16px;
}

h2 {
  font-size: 30px;
  margin: 0 0 18px;
}

h3 {
  font-size: 20px;
  margin: 0 0 10px;
}

.lead {
  margin: 0 0 22px;
  color: #dce3ee;
  font-size: 18px;
}

.hero-card,
.card,
.article-card,
.product-card,
.note-box {
  background: rgba(21, 24, 33, 0.94);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-card {
  padding: 22px;
}

.hero-card img {
  border-radius: 6px;
  border: 1px solid var(--line);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.stat {
  background: var(--panel-2);
  border-radius: 6px;
  padding: 12px;
}

.stat strong {
  display: block;
  color: var(--accent);
  font-size: 20px;
}

.stat span {
  color: var(--muted);
  font-size: 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--accent);
  color: #141414;
  font-weight: 800;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 46px 22px;
}

.section-intro {
  max-width: 760px;
  color: var(--muted);
  margin: -6px 0 22px;
}

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

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.card,
.article-card,
.product-card,
.note-box {
  padding: 20px;
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-media {
  margin: -20px -20px 14px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  border-radius: 8px 8px 0 0;
  background: #0f1219;
}

.card-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.product-visual {
  margin: 22px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}

.product-visual img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #dce3ee;
  padding: 4px 10px;
  font-size: 12px;
  text-decoration: none;
}

.article-card {
  text-decoration: none;
}

.article-card p,
.product-card p,
.card p,
.note-box p {
  color: var(--muted);
  margin: 0;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.feature-list strong {
  display: block;
  margin-bottom: 6px;
}

.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 22px;
}

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

.product-hero {
  max-width: 880px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  overflow: hidden;
  border-radius: 8px;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--line);
  padding: 12px;
  text-align: left;
}

.spec-table th {
  width: 34%;
  color: var(--accent);
  background: var(--panel-2);
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 22px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 820px) {
  .hero-inner,
  .grid,
  .product-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 34px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }
}