/* ═══════════════════════════════════════════════
   PG电子 — 亡灵大盗 — 沙漠宝藏主题
   暖沙色 × 紫水晶 × 琥珀金
   ═══════════════════════════════════════════════ */

:root {
  --bg-primary: #FBF7F0;
  --bg-secondary: #F3EDE3;
  --bg-card: #FFFFFF;
  --bg-footer: #EDE4D6;
  --text-primary: #3D3226;
  --text-secondary: #6B5D4F;
  --text-muted: #8C7D6E;
  --color-violet: #7C3AED;
  --color-violet-deep: #5B21B6;
  --color-violet-light: #EDE9FE;
  --color-amber: #D97706;
  --color-amber-light: #FEF3C7;
  --color-amber-glow: #F59E0B;
  --color-gold: #B8860B;
  --border-color: #E8DFD3;
  --border-light: #F0EBE2;
  --shadow-sm: 0 1px 3px rgba(61, 50, 38, 0.06);
  --shadow-md: 0 4px 20px rgba(61, 50, 38, 0.08);
  --shadow-lg: 0 8px 40px rgba(61, 50, 38, 0.12);
  --shadow-card: 0 2px 12px rgba(61, 50, 38, 0.05);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
}

/* 基础重置 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 选择文本 */
::selection {
  background: var(--color-violet-light);
  color: var(--color-violet-deep);
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-secondary);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--color-violet), var(--color-violet-deep));
  color: #fff;
  font-weight: 800;
  letter-spacing: -0.5px;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 6px;
  transition: all 0.25s ease;
  position: relative;
}

.main-nav a:hover {
  color: var(--color-violet);
  background: var(--color-violet-light);
}

.nav-cta {
  padding: 9px 22px !important;
  border-radius: 8px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, var(--color-amber), var(--color-amber-glow));
  box-shadow: 0 2px 10px rgba(217, 119, 6, 0.25);
  transition: all 0.3s ease !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.35) !important;
  background: linear-gradient(135deg, var(--color-amber-glow), var(--color-amber)) !important;
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary);
  font-size: 1.4rem;
  z-index: 1001;
}

/* 首页Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: var(--color-amber-light);
  color: var(--color-amber);
  letter-spacing: 0.5px;
  border: 1px solid rgba(217, 119, 6, 0.15);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.hero h1 .highlight {
  color: var(--color-violet);
  position: relative;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: rotate(-1deg);
  transition: transform 0.4s ease;
  border: 3px solid #fff;
}

.hero-image:hover {
  transform: rotate(0deg);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-violet), var(--color-violet-deep));
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-violet);
  color: var(--color-violet);
}

.btn-outline:hover {
  background: var(--color-violet);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.25);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: var(--color-violet);
  text-transform: uppercase;
  position: relative;
  padding-left: 28px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: var(--color-violet);
  border-radius: 2px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.25;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-color);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-violet), var(--color-amber));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
  border-radius: 0 0 3px 3px;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.category-card:hover::after {
  transform: scaleX(1);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: var(--color-violet-light);
  color: var(--color-violet);
  transition: all 0.3s ease;
}

.category-card:hover .card-icon {
  background: var(--color-violet);
  color: #fff;
  transform: scale(1.05);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--color-violet);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

.card-link:hover {
  gap: 8px;
  color: var(--color-violet-deep);
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid #fff;
  position: relative;
}

.feature-image::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: linear-gradient(135deg, var(--color-violet-light), var(--color-amber-light));
  z-index: -1;
  opacity: 0.5;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  position: relative;
}

.feature-list {
  list-style: none;
  margin-top: 16px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--color-violet);
  background: var(--color-violet-light);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all 0.35s ease;
  position: relative;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-violet);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--text-muted);
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-card);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 20px;
}

.content-wall-body h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--color-violet-light);
}

.faq-item .faq-question {
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  user-select: none;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-violet);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 20px 16px;
  display: none;
  opacity: 0.7;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeInDown 0.3s ease;
}

.faq-item.open {
  border-color: var(--color-violet-light);
  box-shadow: var(--shadow-sm);
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* CTA横幅 */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
  color: #fff;
  background: linear-gradient(135deg, var(--color-violet), var(--color-violet-deep), #4C1D95);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-banner h2 {
  color: #fff;
  position: relative;
  z-index: 1;
}

.cta-banner .section-desc {
  color: rgba(255, 255, 255, 0.8);
  position: relative;
  z-index: 1;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--color-violet-deep);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: var(--color-amber-light);
  color: var(--color-amber);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.25);
  transform: translateY(-2px);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: var(--bg-footer);
  color: var(--text-primary);
  border-top: 1px solid var(--border-color);
}

.site-footer .container {
  position: relative;
}

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

.footer-brand {
  color: var(--text-secondary);
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.7;
  line-height: 1.7;
}

.footer-col h5 {
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 工具类 */
.text-accent {
  color: var(--color-amber);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.4rem;
  }
  .hero .container {
    gap: 32px;
  }
  .section-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 0 40px;
  }
  .hero .container {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }
  .hero-content {
    order: 1;
    max-width: 100%;
  }
  .hero-image {
    order: 0;
    max-width: 400px;
    margin: 0 auto;
    transform: none;
  }
  .hero-image:hover {
    transform: none;
  }
  .hero p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero h1 {
    font-size: 2rem;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
  .feature-list li {
    justify-content: center;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(251, 247, 240, 0.98);
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
  .main-nav.open a {
    padding: 12px 16px;
    width: 100%;
    border-radius: 8px;
  }

  .section {
    padding: 56px 0;
  }
  .section-title {
    font-size: 1.6rem;
  }

  .cta-banner {
    padding: 40px 20px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  .hero h1 {
    font-size: 1.7rem;
  }
  .hero-image {
    max-width: 100%;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .stat-number {
    font-size: 1.8rem;
  }
  .container {
    padding: 0 16px;
  }
  .header-inner {
    padding: 0 16px;
  }
  .category-card {
    padding: 22px;
  }
}