/* ===== 星耀国际体育经纪 - 主样式表 ===== */
/* 全局重置与基础 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-black: #111111;
  --color-gold: #D4AF37;
  --color-gold-light: #E8C94B;
  --color-white: #FFFFFF;
  --color-gray-dark: #1A1A1A;
  --color-gray-mid: #2C2C2C;
  --color-gray-light: #F5F5F5;
  --color-text: #333333;
  --color-text-light: #999999;
  --font-heading: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
  --transition: all 0.3s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 导航栏 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(17, 17, 17, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 15px 20px;
}

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

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

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-menu a {
  color: var(--color-white);
  font-size: 0.9rem;
  letter-spacing: 1px;
  position: relative;
  padding: 5px 0;
}

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

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

.nav-menu a:hover {
  color: var(--color-gold);
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background: var(--color-gold);
  transition: var(--transition);
}

/* ===== Hero首屏 ===== */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(17,17,17,0.85) 0%, rgba(17,17,17,0.6) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-white);
  padding: 0 20px;
}

.hero-content h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  margin-bottom: 20px;
  line-height: 1.3;
  letter-spacing: 3px;
}

.hero-content h1 .gold {
  color: var(--color-gold);
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-gold);
  color: var(--color-black);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 2px;
  letter-spacing: 1px;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3);
}

.btn-outline {
  display: inline-block;
  padding: 14px 36px;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 2px;
  letter-spacing: 1px;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--color-gold);
  color: var(--color-black);
  transform: translateY(-2px);
}

/* ===== 通用模块样式 ===== */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  color: var(--color-black);
  margin-bottom: 15px;
  letter-spacing: 2px;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-title .gold-line {
  width: 60px;
  height: 3px;
  background: var(--color-gold);
  margin: 15px auto 0;
}

/* ===== 核心业务四宫格 ===== */
.business-section {
  padding: 100px 0;
  background: var(--color-gray-light);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.business-card {
  background: var(--color-white);
  padding: 40px 30px;
  text-align: center;
  border-radius: 4px;
  transition: var(--transition);
  border: 1px solid #eee;
  position: relative;
  overflow: hidden;
}

.business-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-gold);
  transform: scaleX(0);
  transition: var(--transition);
}

.business-card:hover::before {
  transform: scaleX(1);
}

.business-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}

.business-card .icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-gold);
}

.business-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--color-black);
}

.business-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 运动员矩阵 ===== */
.athletes-section {
  padding: 100px 0;
  background: var(--color-black);
}

.athletes-section .section-title h2 {
  color: var(--color-white);
}

.athletes-section .section-title p {
  color: rgba(255,255,255,0.6);
}

.athletes-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.athlete-card {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--color-gray-mid);
}

.athlete-card .athlete-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.athlete-card:hover .athlete-img {
  transform: scale(1.05);
  filter: brightness(0.7);
}

.athlete-card .athlete-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 20px;
  background: linear-gradient(transparent, rgba(17,17,17,0.9));
  color: var(--color-white);
}

.athlete-card .athlete-info h4 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.athlete-card .athlete-info span {
  font-size: 0.85rem;
  color: var(--color-gold);
}

.brand-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-top: 50px;
  flex-wrap: wrap;
  opacity: 0.7;
}

.brand-logos span {
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 2px;
}

/* ===== 案例卡片 ===== */
.cases-section {
  padding: 100px 0;
  background: var(--color-white);
}

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

.case-card {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid #eee;
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}

.case-card .case-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-gray-light);
}

.case-card .case-body {
  padding: 25px;
}

.case-card .case-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold);
  font-size: 0.8rem;
  border-radius: 2px;
  margin-bottom: 10px;
}

.case-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--color-black);
  line-height: 1.5;
}

.case-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 合作品牌墙 ===== */
.partners-section {
  padding: 80px 0;
  background: var(--color-gray-light);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 30px;
  align-items: center;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  background: var(--color-white);
  border-radius: 4px;
  padding: 15px;
  font-weight: 600;
  color: var(--color-text-light);
  font-size: 0.9rem;
  letter-spacing: 1px;
  transition: var(--transition);
}

.partner-item:hover {
  box-shadow: 0 5px 20px rgba(0,0,0,0.05);
  color: var(--color-gold);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--color-gold);
}

.footer-col p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 25px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

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

/* ===== 内页通用 ===== */
.page-banner {
  height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-black);
  position: relative;
  margin-top: 70px;
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-gold);
}

.page-banner h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-white);
  letter-spacing: 3px;
}

.page-content {
  padding: 80px 0;
}

.page-content h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-black);
  margin: 40px 0 20px;
}

.page-content h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-black);
  margin: 30px 0 15px;
}

.page-content p {
  margin-bottom: 20px;
  line-height: 2;
  font-size: 1rem;
}

.page-content ul, .page-content ol {
  margin: 20px 0;
  padding-left: 20px;
}

.page-content ul li, .page-content ol li {
  margin-bottom: 10px;
  line-height: 1.8;
  list-style: disc;
}

.page-content ol li {
  list-style: decimal;
}

/* 面包屑 */
.breadcrumb {
  padding: 15px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 70px;
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* 相关阅读 */
.related-reading {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid #eee;
}

.related-reading h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-list a {
  display: block;
  padding: 15px;
  background: var(--color-gray-light);
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: var(--transition);
}

.related-list a:hover {
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold);
}

/* 作者信息 */
.author-box {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 25px;
  background: var(--color-gray-light);
  border-radius: 4px;
  margin: 40px 0;
  border-left: 3px solid var(--color-gold);
}

.author-box .author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.author-box .author-info h4 {
  font-size: 1rem;
  margin-bottom: 5px;
}

.author-box .author-info p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* 新闻列表 */
.news-list {
  display: grid;
  gap: 30px;
}

.news-item {
  display: flex;
  gap: 25px;
  padding-bottom: 30px;
  border-bottom: 1px solid #eee;
}

.news-item .news-thumb {
  width: 250px;
  height: 160px;
  flex-shrink: 0;
  background: var(--color-gray-light);
  border-radius: 4px;
  overflow: hidden;
}

.news-item .news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item .news-body h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  margin-top: 0;
}

.news-item .news-body h3 a:hover {
  color: var(--color-gold);
}

.news-item .news-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.news-item .news-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .athletes-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(17, 17, 17, 0.98);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
  }
  .nav-menu.active {
    display: flex;
  }
  .hamburger {
    display: flex;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-content p {
    font-size: 1rem;
  }
  .business-grid {
    grid-template-columns: 1fr;
  }
  .athletes-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-banner {
    height: 250px;
  }
  .page-banner h1 {
    font-size: 1.8rem;
  }
  .related-list {
    grid-template-columns: 1fr;
  }
  .news-item {
    flex-direction: column;
  }
  .news-item .news-thumb {
    width: 100%;
    height: 200px;
  }
  .section-title h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .athletes-gallery {
    grid-template-columns: 1fr;
  }
  .cta-group {
    flex-direction: column;
    align-items: center;
  }
  .partners-grid {
    grid-template-columns: 1fr;
  }
}