/* ============================================
   壹号云车 - 黑金超奢华风
   ============================================ */

:root {
  --black: #0a0a0a;
  --black-2: #111;
  --black-3: #1a1a1a;
  --gold: #d4a24e;
  --gold-light: #f0d68a;
  --gold-dark: #b8863a;
  --white: #fff;
  --white-70: rgba(255,255,255,0.7);
  --white-50: rgba(255,255,255,0.5);
  --white-10: rgba(255,255,255,0.1);
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== HEADER / NAV ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--white-10);
  padding: 0 40px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo img { height: 48px; }
.logo-text {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav { display: flex; align-items: center; gap: 32px; }
.nav a {
  color: var(--white-70);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: var(--transition);
}
.nav a:hover,
.nav a.active { color: var(--gold); }
.nav a:hover::after,
.nav a.active::after { width: 100%; }
.nav-phone {
  color: var(--gold) !important;
  font-weight: 600 !important;
}
.nav-phone i { margin-right: 6px; }

/* ===== MOBILE TOGGLE ===== */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.mobile-toggle span {
  width: 28px;
  height: 2px;
  background: var(--gold);
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(10,10,10,0.85) 0%, rgba(10,10,10,0.4) 50%, rgba(10,10,10,0.85) 100%);
}
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212,162,78,0.08) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 60px 20px;
}
.hero-tag {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid var(--gold);
  border-radius: 30px;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 3px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--white) 0%, var(--gold-light) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 18px;
  color: var(--white-70);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-badges {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 40px;
}
.badge-item {
  text-align: center;
}
.badge-item .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
}
.badge-item .label {
  font-size: 13px;
  color: var(--white-50);
  margin-top: 4px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font);
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold), var(--gold-light));
  color: var(--black);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212,162,78,0.3);
}
.btn-outline {
  border: 1px solid var(--gold);
  color: var(--gold);
  background: transparent;
}
.btn-outline:hover {
  background: var(--gold);
  color: var(--black);
}
.btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== SECTION ===== */
.section {
  padding: 100px 0;
}
.section-dark { background: var(--black-2); }
.section-darker { background: var(--black-3); }
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 12px;
  position: relative;
}
.section-tag::before,
.section-tag::after {
  content: '—';
  margin: 0 10px;
  color: var(--gold);
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--white-50);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== SERVICE CARDS (首页业务范畴) ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3/4;
}
.service-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.service-card:hover img { transform: scale(1.08); }
.service-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.service-card p {
  font-size: 13px;
  color: var(--white-50);
  line-height: 1.6;
}

/* ===== CAR GRID ===== */
.car-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.car-card {
  background: var(--black-3);
  border: 1px solid var(--white-10);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
  width: 100%;
  max-width: 100%;
}
.car-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(212,162,78,0.15);
}
.car-card-img {
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.car-card-img-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
}
.car-card-body {
  padding: 20px;
}
.car-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.car-card .specs {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}
.car-card .specs span {
  font-size: 13px;
  color: var(--white-50);
  display: flex;
  align-items: center;
  gap: 4px;
}
.car-card .price {
  font-size: 15px;
  color: var(--gold);
  font-weight: 600;
}
.car-card .price span { font-size: 12px; color: var(--white-50); font-weight: 400; }

/* ===== FEATURES ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  text-align: center;
  padding: 40px 20px;
  border: 1px solid var(--white-10);
  border-radius: 8px;
  transition: var(--transition);
  background: var(--black-3);
}
.feature-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}
.feature-card .icon {
  font-size: 48px;
  color: var(--gold);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--white-50);
  line-height: 1.6;
}

/* ===== REVIEWS ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--black-3);
  border: 1px solid var(--white-10);
  border-radius: 8px;
  padding: 32px;
}
.review-card .stars {
  color: var(--gold);
  font-size: 14px;
  margin-bottom: 12px;
}
.review-card blockquote {
  font-size: 14px;
  color: var(--white-70);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}
.review-card .author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-card .author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.review-card .author .name { font-weight: 600; font-size: 14px; }
.review-card .author .role { font-size: 12px; color: var(--white-50); }

/* ===== BRANDS / PARTNERS ===== */
.brand-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  align-items: center;
}
.brand-item {
  padding: 16px 32px;
  border: 1px solid var(--white-10);
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--white-50);
  transition: var(--transition);
}
.brand-item:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ===== ABOUT ===== */
.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--white-70);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 15px;
}
.about-img {
  border-radius: 8px;
  overflow: hidden;
}
.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== NEWS ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--black-3);
  border: 1px solid var(--white-10);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}
.news-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.news-card-body {
  padding: 20px;
}
.news-card .cat {
  font-size: 11px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.news-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}
.news-card .date {
  font-size: 12px;
  color: var(--white-50);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--black-3);
  border-top: 1px solid var(--white-10);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--white-50);
  line-height: 1.8;
}
.footer h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--gold);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 13px;
  color: var(--white-50);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--gold); }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--white-50);
}
.footer-contact i { color: var(--gold); margin-top: 3px; }
.footer-bottom {
  border-top: 1px solid var(--white-10);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--white-50);
}
.footer-bottom a { color: var(--gold); }

/* ===== PAGE HERO (子页面) ===== */
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}
.page-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(10,10,10,0.9), rgba(10,10,10,0.4));
}
.page-hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--white-50);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--white-50); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span:last-child { color: var(--gold); }
.page-hero h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 16px;
  color: var(--white-70);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== TAB CONTROLS ===== */
.tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 28px;
  border: 1px solid var(--white-10);
  border-radius: 30px;
  background: transparent;
  color: var(--white-50);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}
.tab-btn:hover { border-color: var(--gold); color: var(--gold); }
.tab-btn.active {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}

/* ===== TWO COLUMN ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }
.col-text h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
}
.col-text p {
  color: var(--white-70);
  line-height: 1.8;
  margin-bottom: 16px;
}
.col-text ul { margin-bottom: 16px; }
.col-text ul li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--white-70);
  display: flex;
  align-items: center;
  gap: 8px;
}
.col-text ul li::before {
  content: '◆';
  color: var(--gold);
  font-size: 8px;
}
.col-img { border-radius: 8px; overflow: hidden; }
.col-img img { width: 100%; object-fit: cover; }

/* ===== CONTACT INFO ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.contact-card {
  background: var(--black-3);
  border: 1px solid var(--white-10);
  border-radius: 8px;
  padding: 40px 24px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}
.contact-card .icon {
  font-size: 40px;
  color: var(--gold);
  margin-bottom: 16px;
}
.contact-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.contact-card .value {
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
}
.contact-card p { font-size: 13px; color: var(--white-50); }

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid var(--white-10);
  padding: 20px 0;
}
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
}
.faq-q i { transition: var(--transition); color: var(--gold); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  color: var(--white-70);
  font-size: 14px;
  line-height: 1.8;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-top: 16px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .car-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .two-col { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .header { padding: 0 16px; }
  .nav { display: none; }
  .mobile-toggle { display: flex; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(10,10,10,0.98);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--white-10);
    z-index: 999;
  }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 15px; }
  .hero-badges { flex-wrap: wrap; gap: 24px; }
  .section-title { font-size: 28px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .car-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 30px; }
  .btn-group { flex-direction: column; align-items: center; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}