@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  --gold: #D4AF37;
  --gold-light: #F1C40F;
  --gold-dark: #996515;
  --black-matte: #0D0D0D;
  --black-surface: #1A1A1A;
  --black-edge: #262626;
  --white: #F8F9FA;
  --text-muted: rgba(248, 249, 250, 0.6);
  --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--black-matte);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, .serif {
  font-family: 'Playfair Display', serif;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 0;
  background: transparent;
  z-index: 1000;
  transition: var(--transition);
}

nav.scrolled {
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--black-edge);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--gold);
}

/* Hero */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), 
              url('https://tse-mm.bing.com/th?q=KY开元集团') center/cover;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 4px;
  font-size: 0.8rem;
  margin-bottom: 1rem;
  display: block;
}

.hero h1 {
  font-size: 4.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 2px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--gold);
  color: #000;
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-3px);
}

.btn-outline {
  border: 1px solid var(--gold);
  color: var(--gold);
  margin-left: 1rem;
}

.btn-outline:hover {
  background: var(--gold);
  color: #000;
}

/* Sections */
section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 60px;
  text-align: center;
}

.section-label {
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
  display: block;
}

.section-header h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Cards */
.card {
  background: var(--black-surface);
  border: 1px solid var(--black-edge);
  padding: 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--gold);
  transform: translateY(-10px);
}

.card-img-wrapper {
  margin: -30px -30px 20px -30px;
  height: 200px;
  overflow: hidden;
}

.card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card:hover .card-img-wrapper img {
  transform: scale(1.1);
}

/* Company Intro Section */
.intro-stats {
  display: flex;
  justify-content: space-around;
  text-align: center;
  margin-top: 50px;
  background: var(--black-surface);
  padding: 40px;
  border: 1px solid var(--gold-dark);
}

.stat-item h3 {
  font-size: 3rem;
  color: var(--gold);
}

.stat-item p {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.8rem;
}

/* News List */
.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--black-edge);
}

.news-date {
  min-width: 80px;
  text-align: center;
}

.news-date .day {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  display: block;
}

.news-date .month {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.news-content h4 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.news-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  background: #050505;
  padding: 80px 0 30px;
  border-top: 1px solid var(--black-edge);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-col h4 {
  color: var(--gold);
  margin-bottom: 25px;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 2px;
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--gold);
  padding-left: 5px;
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--black-edge);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero h1 { font-size: 3.5rem; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-content { text-align: center; }
}

/* Product Page Specific */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 40px;
  background: var(--black-surface);
  padding: 20px;
  border-radius: 4px;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  font-size: 0.8rem;
  color: var(--gold);
  margin-bottom: 5px;
}

.filter-group select, .filter-group input {
  background: var(--black-matte);
  border: 1px solid var(--black-edge);
  color: white;
  padding: 8px 12px;
  border-radius: 2px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.tag {
  background: var(--black-edge);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
}

.tag.active {
  background: var(--gold);
  color: black;
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}