/* ===== 问鼎娱乐 style.css ===== */
/* 全局重置与变量 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a1a2e;
  --secondary: #16213e;
  --accent: #ffd700;
  --accent2: #e6b800;
  --bg-light: #f8f9fa;
  --text-light: #333;
  --text-dark: #eee;
  --card-bg: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.12);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  --radius: 20px;
  --transition: 0.3s ease;
}

[data-theme="dark"] {
  --primary: #0d0d1a;
  --secondary: #1a1a2e;
  --bg-light: #12121f;
  --text-light: #eee;
  --card-bg: rgba(255, 255, 255, 0.06);
  --glass: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-light);
  color: var(--text-light);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
header {
  background: var(--primary);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo svg {
  width: 40px;
  height: 40px;
}

.logo span {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
}

nav {
  display: flex;
  gap: 25px;
  align-items: center;
  flex-wrap: wrap;
}

nav a {
  color: #ccc;
  font-size: 15px;
  transition: color var(--transition);
  position: relative;
  padding: 5px 0;
}

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

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
}

.theme-toggle {
  background: none;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--primary);
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 28px;
  cursor: pointer;
}

/* Hero Banner */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--secondary), #0f3460);
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.08), transparent 60%);
  animation: heroGlow 10s ease infinite;
}

@keyframes heroGlow {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(30px, 20px);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 56px;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 800;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 20px;
  color: #ccc;
  max-width: 700px;
  margin: 0 auto 40px;
}

.hero-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary);
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent2);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--accent);
  color: var(--primary);
  transform: translateY(-3px);
}

.hero-slider {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 50px;
  flex-wrap: wrap;
}

.hero-slide {
  background: var(--glass);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 30px;
  width: 280px;
  text-align: center;
  border: 1px solid rgba(255, 215, 0, 0.1);
  transition: all var(--transition);
}

.hero-slide:hover {
  transform: translateY(-10px);
  border-color: var(--accent);
}

.hero-slide svg {
  width: 50px;
  height: 50px;
  margin-bottom: 15px;
}

.hero-slide h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.hero-slide p {
  color: #aaa;
  font-size: 14px;
}

/* Section common */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 15px;
  font-weight: 700;
}

.section-title span {
  color: var(--accent);
}

.section-sub {
  text-align: center;
  color: #888;
  max-width: 600px;
  margin: 0 auto 50px;
  font-size: 16px;
}

.grid {
  display: grid;
  gap: 30px;
}

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

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

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

.card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid rgba(255, 215, 0, 0.05);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(255, 215, 0, 0.15);
}

.card-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 15px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.card p {
  color: #999;
  font-size: 14px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

/* About / Story / Values */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  margin-bottom: 20px;
  font-size: 16px;
  color: #aaa;
}

.stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  color: #888;
  font-size: 16px;
  margin-top: 5px;
}

/* Team */
.team-img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 15px;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.team-img svg {
  width: 60px;
  height: 60px;
}

/* Products */
.product-card {
  text-align: center;
}

.product-card .card-icon {
  margin: 0 auto 15px;
}

/* Testimonials */
.testimonial-card {
  text-align: center;
}

.testimonial-card .avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  margin: 0 auto 15px;
  background: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonial-card .avatar svg {
  width: 40px;
  height: 40px;
}

.testimonial-card p {
  font-style: italic;
  color: #bbb;
}

.testimonial-card h4 {
  color: var(--accent);
  margin-top: 10px;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
  padding: 15px 0;
  cursor: pointer;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
  font-weight: 600;
}

.faq-question span {
  transition: transform 0.3s;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 20px;
  color: #999;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 15px 20px;
}

.faq-item.active .faq-question span {
  transform: rotate(45deg);
}

/* Contact */
.contact-info {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.contact-item {
  text-align: center;
  padding: 20px;
}

.contact-item svg {
  width: 40px;
  height: 40px;
  margin-bottom: 10px;
}

/* Footer */
footer {
  background: var(--primary);
  padding: 50px 0 20px;
  color: #aaa;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 15px;
  font-size: 18px;
}

.footer-col a {
  display: block;
  color: #888;
  margin-bottom: 8px;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
}

.footer-bottom a {
  color: var(--accent);
}

/* Breadcrumb */
.breadcrumb {
  padding: 15px 0;
  font-size: 14px;
  color: #888;
  background: var(--secondary);
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* Search */
.search-box {
  display: flex;
  max-width: 500px;
  margin: 20px auto;
}

.search-box input {
  flex: 1;
  padding: 12px 20px;
  border: 2px solid rgba(255, 215, 0, 0.2);
  border-radius: 30px 0 0 30px;
  background: var(--card-bg);
  color: var(--text-light);
  outline: none;
}

.search-box input:focus {
  border-color: var(--accent);
}

.search-box button {
  padding: 12px 20px;
  background: var(--accent);
  border: none;
  border-radius: 0 30px 30px 0;
  color: var(--primary);
  font-weight: 700;
  cursor: pointer;
}

/* Back to top */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: all var(--transition);
  z-index: 999;
}

.back-top.show {
  display: flex;
}

.back-top:hover {
  transform: scale(1.1);
}

/* Lazy load placeholder */
.lazy-placeholder {
  background: var(--secondary);
  min-height: 100px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #555;
}

/* Scroll animation */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive */
@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero h1 {
    font-size: 40px;
  }
}

@media (max-width: 768px) {
  .menu-btn {
    display: block;
  }
  nav {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 15px;
    gap: 15px;
  }
  nav.open {
    display: flex;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 32px;
  }
  .hero p {
    font-size: 16px;
  }
  .section-title {
    font-size: 28px;
  }
  .stats {
    gap: 20px;
  }
  .stat-number {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  .btn-primary,
  .btn-secondary {
    padding: 12px 25px;
    font-size: 15px;
  }
}