:root {
  --ink: #0b0d10;
  --ink-2: #222831;
  --muted: #65707d;
  --paper: #f7f8fa;
  --surface: #ffffff;
  --line: #dfe4ea;
  --blue: #1b7cff;
  --blue-dark: #075ac6;
  --orange: #ff6b2c;
  --shadow: 0 24px 80px rgba(11, 13, 16, 0.12);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(223, 228, 234, 0.82);
  background: rgba(247, 248, 250, 0.92);
  backdrop-filter: blur(18px);
}

.header-inner,
.section,
.footer-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand img {
  width: 188px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 680;
}

.nav a:hover {
  color: var(--blue);
}

.button,
.nav-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 760;
  letter-spacing: 0;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

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

.button-primary,
.nav-cta {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--surface);
}

.button-secondary {
  background: var(--surface);
  border-color: rgba(11, 13, 16, 0.16);
}

.button-blue {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: var(--surface);
}

.hero-image {
  position: absolute;
  inset: 0;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(247, 248, 250, 0.98) 0%, rgba(247, 248, 250, 0.92) 36%, rgba(247, 248, 250, 0.2) 74%),
    linear-gradient(180deg, rgba(247, 248, 250, 0) 76%, var(--paper) 100%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(680px, calc(100% - 40px));
  margin-left: max(20px, calc((100vw - var(--max)) / 2));
  padding: 72px 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 24px;
  font-size: 78px;
  line-height: 0.95;
}

h2 {
  margin-bottom: 0;
  font-size: 50px;
  line-height: 1.04;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.15;
}

.lead {
  max-width: 650px;
  color: var(--ink-2);
  font-size: 18px;
}

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

.trust-strip {
  background: var(--ink);
  color: #fff;
}

.trust-strip .section {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  padding: 24px 0;
}

.trust-strip span {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 10px 18px;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 680;
}

.section {
  padding: 82px 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 44px;
  align-items: end;
  margin-bottom: 38px;
}

.section-head p {
  color: var(--muted);
  font-size: 18px;
}

.vehicle-grid,
.product-grid,
.category-grid,
.process-grid,
.capability-grid {
  display: grid;
  gap: 16px;
}

.vehicle-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.capability-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.vehicle-card,
.product-card,
.category-card,
.info-card,
.detail-card {
  border: 1px solid rgba(223, 228, 234, 0.96);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 16px 44px rgba(11, 13, 16, 0.05);
}

.vehicle-card {
  padding: 28px;
}

.info-card {
  padding: 24px;
}

.vehicle-card strong {
  color: var(--blue);
}

.product-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.product-card {
  overflow: hidden;
}

.product-visual {
  min-height: 210px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 72% 22%, rgba(27, 124, 255, 0.26), transparent 28%),
    linear-gradient(145deg, #ffffff, #eaf0f6);
}

.product-visual::before {
  content: "";
  width: 58%;
  aspect-ratio: 1.55;
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(11, 13, 16, 0.88), rgba(36, 42, 49, 0.54)),
    linear-gradient(90deg, transparent 45%, rgba(255, 255, 255, 0.22) 46%, transparent 50%);
  box-shadow: 0 24px 48px rgba(11, 13, 16, 0.16);
  transform: perspective(500px) rotateX(58deg) rotateZ(-12deg);
}

.product-visual.has-image {
  background: #fff;
}

.product-visual.has-image::before {
  display: none;
}

.product-visual.has-image img {
  width: 100%;
  height: 100%;
  min-height: 210px;
  object-fit: cover;
}

.tone-glass::before,
.tone-kit::before {
  border: 1px solid rgba(27, 124, 255, 0.5);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(177, 205, 241, 0.55));
}

.tone-storage::before,
.tone-bag::before {
  border-radius: 18px 18px 10px 10px;
  background: linear-gradient(135deg, rgba(11, 13, 16, 0.88), rgba(27, 124, 255, 0.45));
}

.tone-yu7::before,
.tone-ultra::before {
  background: linear-gradient(135deg, rgba(11, 13, 16, 0.9), rgba(255, 107, 44, 0.48));
}

.product-copy {
  padding: 22px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.badge {
  display: inline-flex;
  border: 1px solid rgba(11, 13, 16, 0.13);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
}

.product-copy p,
.vehicle-card p,
.category-card p,
.detail-card p,
.site-footer p {
  color: var(--muted);
}

.reference-price {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 820;
}

.product-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--blue-dark);
  font-weight: 820;
}

.category-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.category-card {
  padding: 22px;
}

.dark-band {
  background: var(--ink);
  color: #fff;
}

.dark-band .section-head p,
.dark-band .detail-card p {
  color: rgba(255, 255, 255, 0.68);
}

.dark-band .detail-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
}

.process-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.process-step {
  padding: 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.process-step b {
  color: var(--blue);
}

.split-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 48px;
  align-items: center;
  border: 1px solid rgba(223, 228, 234, 0.96);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 38px;
  box-shadow: 0 16px 44px rgba(11, 13, 16, 0.05);
}

.split-panel p {
  color: var(--muted);
  font-size: 18px;
}

.market-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.market-strip span {
  border: 1px solid rgba(11, 13, 16, 0.13);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 760;
}

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

.faq-item {
  border: 1px solid rgba(223, 228, 234, 0.96);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 20px 22px;
  box-shadow: 0 16px 44px rgba(11, 13, 16, 0.05);
}

.faq-item summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 18px;
  font-weight: 820;
}

.faq-item p {
  margin: 14px 0 0;
  color: var(--muted);
}

.cta-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  border-radius: var(--radius);
  background: var(--surface);
  padding: 38px;
  box-shadow: var(--shadow);
}

.page-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.page-hero .section {
  padding-top: 70px;
  padding-bottom: 58px;
}

.page-hero h1 {
  max-width: 14ch;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 28px;
}

.detail-card {
  padding: 28px;
}

.spec-list {
  display: grid;
  gap: 12px;
}

.spec-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.spec-row dt {
  color: var(--muted);
}

.spec-row dd {
  margin: 0;
  font-weight: 760;
}

.feature-list {
  padding-left: 20px;
  color: var(--ink-2);
}

.inquiry-box {
  position: sticky;
  top: 96px;
}

.inquiry-form {
  display: grid;
  gap: 12px;
}

.inquiry-form input,
.inquiry-form textarea,
.inquiry-form select {
  width: 100%;
  min-height: 46px;
  border: 1px solid rgba(11, 13, 16, 0.16);
  border-radius: 8px;
  padding: 12px 14px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.inquiry-form textarea {
  min-height: 120px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, minmax(140px, 1fr));
  gap: 32px;
  padding: 52px 0;
}

.footer-links {
  display: grid;
  gap: 10px;
}

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

.footer-links a:hover {
  color: var(--blue);
}

.fineprint {
  border-top: 1px solid var(--line);
  padding: 18px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 14px 0;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .section-head,
  .detail-layout,
  .cta-panel,
  .footer-inner,
  .split-panel {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 620px) {
  .header-inner,
  .section,
  .footer-inner {
    width: min(100% - 28px, var(--max));
  }

  .brand img {
    width: 154px;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    min-height: 620px;
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 32px;
  }

  .hero-copy {
    width: min(100% - 28px, 680px);
    margin: 0 auto;
  }

  .hero::after {
    background:
      linear-gradient(180deg, rgba(247, 248, 250, 0.98) 0%, rgba(247, 248, 250, 0.88) 62%, var(--paper) 100%);
  }

  .vehicle-grid,
  .product-grid,
  .category-grid,
  .process-grid,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 0;
  }
}