/* =========================================
   后羿医药 · YE — 深海沉浸风格共用样式
   ========================================= */

:root {
  --deep-sea: #020a1a;
  --sea-mid: #0a1f3d;
  --sea-light: #0d2b4d;
  --gold: #c9a45c;
  --gold-light: #e8d5a8;
  --pearl: #f0ebe3;
  --foam: #e8f4f8;
  --blue-gray: #a8c4d9;
  --glass: rgba(10, 31, 61, 0.6);
  --glass-border: rgba(201, 164, 92, 0.2);
  --accent-blue: #1a4a6e;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, var(--deep-sea) 0%, var(--sea-mid) 40%, var(--sea-light) 100%);
  color: var(--pearl);
  line-height: 1.8;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 深海背景装饰层 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(201,164,92,0.04) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(26,74,110,0.08) 0%, transparent 35%);
  pointer-events: none;
  z-index: 0;
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem 5%;
  background: rgba(2, 10, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: background 0.3s, padding 0.3s;
}

.navbar.scrolled {
  background: rgba(2, 10, 26, 0.95);
  padding: 0.7rem 5%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 2px;
  text-decoration: none;
}

.logo span { color: var(--pearl); font-weight: 300; }

.nav-links { display: flex; gap: 2rem; list-style: none; }

.nav-links a {
  color: var(--blue-gray);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
  position: relative;
  padding: 0.3rem 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width 0.3s;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--gold);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========== Hero 首页首屏 ========== */
.hero {
  height: 70vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

/* ========== Banner 内页 ========== */
.page-banner {
  height: 45vh;
  min-height: 320px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background: linear-gradient(180deg, #020a1a 0%, #0a1f3d 60%, #0d2b4d 100%);
}

/* 深海光纹纹理（无图片的banner显示此效果） */
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 25% 30%, rgba(201, 164, 92, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 75% 70%, rgba(26, 74, 110, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(10, 31, 61, 0.5) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-bg,
.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay,
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2,10,26,0.5) 0%, rgba(2,10,26,0.7) 60%, rgba(2,10,26,0.95) 100%);
  z-index: 1;
}

.hero-content,
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
  width: 100%;
}

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

.hero-tag {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 3px;
  margin-bottom: 1.5rem;
  background: var(--glass);
  backdrop-filter: blur(4px);
}

.hero h1,
.banner-content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: 2px;
  color: var(--pearl);
}

.hero h1 strong,
.banner-content h1 strong {
  color: var(--gold);
  font-weight: 600;
}

.hero p {
  font-size: 1.1rem;
  color: var(--blue-gray);
  margin-bottom: 2rem;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--blue-gray);
  font-size: 0.9rem;
  margin-top: 1rem;
}

.breadcrumb a { color: var(--blue-gray); text-decoration: none; transition: color 0.3s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--gold); }

/* ========== CTA 按钮 ========== */
.cta-btn {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--deep-sea);
  text-decoration: none;
  font-weight: 600;
  border-radius: 30px;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 20px rgba(201,164,92,0.3);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,164,92,0.5);
}

.cta-btn-outline {
  display: inline-block;
  padding: 0.8rem 2rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  text-decoration: none;
  font-weight: 500;
  border-radius: 30px;
  transition: all 0.3s;
  background: transparent;
  cursor: pointer;
}

.cta-btn-outline:hover {
  background: var(--gold);
  color: var(--deep-sea);
}

/* ========== 通用区块 ========== */
section {
  padding: 80px 5vw;
  position: relative;
  z-index: 1;
}

.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 300;
  margin-bottom: 0.5rem;
  color: var(--gold);
}

.section-subtitle {
  text-align: center;
  color: var(--blue-gray);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 2rem;
}

/* ========== 波浪分隔线 ========== */
.wave-divider {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  transform: rotate(180deg);
}

.wave-divider svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 80px;
}

.wave-divider-bottom {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.wave-divider-bottom svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 80px;
}

/* ========== 玻璃态卡片 ========== */
.glass-card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold);
  box-shadow: 0 10px 40px rgba(201,164,92,0.1);
}

/* ========== 数字卡片 ========== */
.stat-card {
  text-align: center;
  padding: 1.5rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-number span { font-size: 1.5rem; }

.stat-label {
  color: var(--blue-gray);
  font-size: 0.95rem;
}

/* ========== Scroll Reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 气泡装饰动画 ========== */
.bubbles {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bubble {
  position: absolute;
  bottom: -20px;
  background: rgba(201, 164, 92, 0.1);
  border-radius: 50%;
  animation: rise linear infinite;
}

@keyframes rise {
  0% { transform: translateY(0) scale(1); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { transform: translateY(-100vh) scale(1.2); opacity: 0; }
}

/* ========== 光粒子 ========== */
.particles {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0% { transform: translate(0, 0); opacity: 0; }
  20% { opacity: 0.8; }
  80% { opacity: 0.8; }
  100% { transform: translate(var(--tx, 50px), var(--ty, -100px)); opacity: 0; }
}

/* ========== 产品卡片 ========== */
.product-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold);
  box-shadow: 0 10px 40px rgba(201,164,92,0.15);
}

.product-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.product-img-placeholder {
  height: 220px;
  background: linear-gradient(135deg, var(--accent-blue), var(--sea-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--gold);
}

.product-info { padding: 1.5rem; }

.product-info h3 {
  color: var(--gold);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.product-info p {
  color: var(--blue-gray);
  font-size: 0.9rem;
}

.product-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(201,164,92,0.15);
  color: var(--gold);
  font-size: 0.75rem;
  border-radius: 4px;
  margin-top: 0.8rem;
}

/* ========== 成分卡片（大图版） ========== */
.ingredient-card-large {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s;
}

.ingredient-card-large:hover {
  border-color: var(--gold);
  box-shadow: 0 10px 40px rgba(201,164,92,0.12);
}

.ingredient-card-large img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.ingredient-card-large .ing-content {
  padding: 1.5rem;
}

.ingredient-card-large .ing-code {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.ingredient-card-large h3 {
  color: var(--gold);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.ingredient-card-large p {
  color: var(--blue-gray);
  font-size: 0.9rem;
}

/* ========== Footer ========== */
.footer {
  background: var(--deep-sea);
  border-top: 1px solid var(--glass-border);
  padding: 4rem 5% 2rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-col h4 {
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--blue-gray);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

.footer-col p {
  color: var(--blue-gray);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
  color: var(--blue-gray);
  font-size: 0.85rem;
}

.footer-brand {
  font-size: 1.5rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.guarantee-badge {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 20px;
  font-size: 0.9rem;
}

/* ========== 表单样式 ========== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--blue-gray);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.9rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--pearl);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--gold);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(168,196,217,0.5);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========== 科研/合作伙伴卡片 ========== */
.research-card {
  text-align: center;
  padding: 2rem;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--glass);
  transition: all 0.3s;
}

.research-card:hover {
  border-color: var(--gold);
}

.research-card .logo-placeholder {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--sea-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--gold);
}

.research-card h4 {
  color: var(--gold);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.research-card p {
  color: var(--blue-gray);
  font-size: 0.85rem;
}

/* ========== 对比展示 ========== */
.compare-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.compare-card {
  padding: 2rem;
  border-radius: 16px;
}

.compare-card.negative {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(168,196,217,0.15);
}

.compare-card.positive {
  background: rgba(201,164,92,0.08);
  border: 1px solid var(--glass-border);
}

.compare-card h3 {
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.compare-card.negative h3 { color: var(--blue-gray); }
.compare-card.positive h3 { color: var(--gold); }

.compare-card ul {
  list-style: none;
}

.compare-card li {
  padding: 0.5rem 0;
  color: var(--blue-gray);
  font-size: 0.95rem;
  position: relative;
  padding-left: 1.5rem;
}

.compare-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.compare-card.negative li::before { background: var(--blue-gray); }
.compare-card.positive li::before { background: var(--gold); }

/* ========== 科学家/人物卡片 ========== */
.person-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s;
}

.person-card:hover {
  border-color: var(--gold);
}

.person-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--sea-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--gold);
  flex-shrink: 0;
}

.person-info h3 {
  color: var(--gold);
  margin-bottom: 0.3rem;
  font-size: 1.2rem;
}

.person-info .title {
  color: var(--blue-gray);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

.person-info p {
  color: var(--blue-gray);
  font-size: 0.9rem;
}

/* ========== 渠道合作卡片 ========== */
.channel-card {
  text-align: center;
  padding: 2.5rem 2rem;
}

.channel-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--deep-sea);
}

.channel-card h3 {
  color: var(--gold);
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

.channel-card p {
  color: var(--blue-gray);
  font-size: 0.9rem;
}

/* ========== 技术详情卡片 ========== */
.tech-detail-card {
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.tech-detail-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.tech-detail-card h3 {
  color: var(--gold);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.tech-detail-card .tech-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--blue-gray);
  border: 1px solid var(--accent-blue);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.tech-detail-card p {
  color: var(--blue-gray);
  font-size: 0.95rem;
}

/* ========== 临床证据时间线 ========== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--accent-blue));
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.3rem;
  width: 12px;
  height: 12px;
  background: var(--gold);
  border-radius: 50%;
  margin-left: -5px;
}

.timeline-item h4 {
  color: var(--gold);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.timeline-item p {
  color: var(--blue-gray);
  font-size: 0.95rem;
}

/* ========== 网格布局工具类 ========== */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.grid-5 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.5rem; }

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

/* ========== 图标样式（CSS绘制） ========== */
.icon-circle {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--deep-sea);
  font-weight: 700;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(2,10,26,0.97);
    padding: 1rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn { display: block; }

  section { padding: 3rem 1.5rem; }

  .hero,
  .page-banner {
    min-height: 400px;
    height: auto;
    padding: 100px 1.5rem 60px;
  }

  .compare-section {
    grid-template-columns: 1fr;
  }

  .person-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ========== Banner动态效果 ========== */

/* 背景图缓慢缩放（Ken Burns效果） */
.hero::before{
  animation: kenBurns 20s ease-in-out infinite alternate;
}
@keyframes kenBurns{
  0%{ transform: scale(1); }
  100%{ transform: scale(1.08); }
}

/* 金色光粒子浮动 */
.hero-particles{
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  overflow: hidden; pointer-events: none; z-index: 2;
}
.hero-particles span{
  position: absolute;
  display: block;
  width: 4px; height: 4px;
  background: rgba(201, 164, 92, 0.6);
  border-radius: 50%;
  animation: floatUp linear infinite;
  box-shadow: 0 0 10px rgba(201, 164, 92, 0.4);
}
@keyframes floatUp{
  0%{ transform: translateY(100vh) scale(0); opacity: 0; }
  10%{ opacity: 1; }
  90%{ opacity: 1; }
  100%{ transform: translateY(-10vh) scale(1.5); opacity: 0; }
}

/* 水波纹效果 */
.wave-decoration{
  position: absolute;
  bottom: 0; left: 0; width: 100%; height: 120px;
  overflow: hidden; pointer-events: none;
}
.wave-decoration svg{
  position: absolute; bottom: 0;
  width: 200%; height: 100%;
  animation: waveMove 8s linear infinite;
}
@keyframes waveMove{
  0%{ transform: translateX(0); }
  100%{ transform: translateX(-50%); }
}

/* 光晕脉冲 */
.glow-pulse{
  animation: glowPulse 3s ease-in-out infinite;
}
@keyframes glowPulse{
  0%, 100%{ box-shadow: 0 0 20px rgba(201, 164, 92, 0.2); }
  50%{ box-shadow: 0 0 40px rgba(201, 164, 92, 0.5); }
}

/* 文字闪烁入场 */
.hero-content h1{
  animation: textReveal 1.2s ease-out forwards;
  opacity: 0;
}
.hero-content p{
  animation: textReveal 1.2s ease-out 0.3s forwards;
  opacity: 0;
}
.hero-content .btn{
  animation: textReveal 1.2s ease-out 0.6s forwards;
  opacity: 0;
}
@keyframes textReveal{
  from{ opacity: 0; transform: translateY(30px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* banner区域光柱扫过 */
.light-sweep{
  position: absolute;
  top: -50%; left: -50%;
  width: 50%; height: 200%;
  background: linear-gradient(90deg, transparent, rgba(201, 164, 92, 0.08), transparent);
  transform: rotate(25deg);
  animation: lightSweep 6s ease-in-out infinite;
  pointer-events: none; z-index: 3;
}
@keyframes lightSweep{
  0%{ left: -50%; }
  100%{ left: 150%; }
}

.advantages-section{ padding: 80px 5vw; background: linear-gradient(180deg, var(--deep-sea), #061220); }
.advantages-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 32px; }
.advantage-card{ background: var(--glass); backdrop-filter: blur(16px); border: 1px solid rgba(201, 164, 92, 0.15); border-radius: 12px; padding: 24px 20px; text-align: center; transition: .3s; }
.advantage-card:hover{ border-color: rgba(201, 164, 92, 0.4); transform: translateY(-4px); }
.adv-icon{ font-size: 32px; margin-bottom: 10px; }
.advantage-card h3{ font-size: 18px; color: var(--gold); margin-bottom: 10px; }
.advantage-card p{ font-size: 14px; color: var(--blue-gray); line-height: 1.6; }
@media (max-width: 768px){ .advantages-grid{ grid-template-columns: 1fr; } }