/* =========================================================
   爱心体育游戏网 - 官网模板样式表
   Author: Aixin Sports Template
   ========================================================= */

/* ---------- 变量与基础 ---------- */
:root {
  --primary: #ff6b2c;
  --primary-dark: #e6531a;
  --secondary: #1f3a93;
  --secondary-dark: #162a6e;
  --accent: #ff3b5c;
  --gold: #ffb400;
  --bg-light: #f6f8fb;
  --bg-white: #ffffff;
  --text-main: #2b2f3a;
  --text-muted: #6b7280;
  --border: #e7eaf1;
  --shadow-sm: 0 4px 14px rgba(31, 58, 147, 0.08);
  --shadow-md: 0 10px 30px rgba(31, 58, 147, 0.12);
  --shadow-lg: 0 20px 50px rgba(31, 58, 147, 0.18);
  --radius: 14px;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg-white);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color .25s ease;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 84px 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .3s ease;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 22px rgba(255, 107, 44, .35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(255, 107, 44, .45);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.8);
}
.btn-outline:hover {
  background: #fff;
  color: var(--primary);
}
.btn-dark {
  background: var(--secondary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--secondary-dark);
  transform: translateY(-3px);
}
.btn-ghost {
  background: #fff;
  color: var(--secondary);
  border-color: var(--secondary);
}
.btn-ghost:hover {
  background: var(--secondary);
  color: #fff;
}
.btn-lg {
  padding: 16px 42px;
  font-size: 16px;
}

/* ---------- 顶部信息栏 ---------- */
.topbar {
  background: var(--secondary);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar a:hover {
  color: var(--gold);
}
.topbar-left span {
  margin-right: 22px;
}
.topbar-left i {
  margin-right: 5px;
  color: var(--gold);
}
.topbar-right a {
  margin-left: 16px;
}

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: #fff;
  box-shadow: 0 2px 10px rgba(31,58,147,.06);
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(31,58,147,.14);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(255,107,44,.35);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--secondary);
}
.logo-text em {
  font-style: normal;
  color: var(--primary);
}
.logo-sub {
  display: block;
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--text-muted);
  font-weight: 400;
}

.main-nav ul {
  display: flex;
  gap: 6px;
}
.main-nav a {
  display: block;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.header-actions .btn {
  padding: 10px 22px;
  font-size: 14px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 26px;
  height: 3px;
  border-radius: 3px;
  background: var(--secondary);
  transition: all .3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- 主视觉 Hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  padding: 120px 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(22,42,110,.92) 0%, rgba(31,58,147,.78) 45%, rgba(255,107,44,.45) 100%);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.35);
  backdrop-filter: blur(6px);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 14px;
  margin-bottom: 22px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero h1 span {
  background: linear-gradient(90deg, var(--gold), #ffd76e);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  font-size: 18px;
  max-width: 620px;
  color: rgba(255,255,255,.9);
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 漂浮爱心装饰 */
.hero-hearts span {
  position: absolute;
  font-size: 28px;
  opacity: .35;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-22px) rotate(12deg); }
}

/* 快速导航卡 */
.hero-quick {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.quick-card {
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.28);
  border-radius: var(--radius);
  padding: 22px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all .3s ease;
}
.quick-card:hover {
  background: rgba(255,255,255,.22);
  transform: translateY(-6px);
}
.quick-card i {
  font-size: 30px;
  color: var(--gold);
}
.quick-card b {
  display: block;
  font-size: 16px;
}
.quick-card small {
  color: rgba(255,255,255,.8);
  font-size: 13px;
}

/* ---------- 区块标题 ---------- */
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-block;
  background: rgba(255,107,44,.1);
  color: var(--primary);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 36px;
  color: var(--secondary);
  margin-bottom: 14px;
}
.section-head h2 span {
  color: var(--primary);
}
.section-head p {
  color: var(--text-muted);
}

/* ---------- 特色板块 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}
.feature-img {
  position: relative;
  overflow: hidden;
  height: 220px;
}
.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.feature-card:hover .feature-img img {
  transform: scale(1.08);
}
.feature-ico {
  position: absolute;
  left: 20px;
  bottom: -26px;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 8px 20px rgba(255,107,44,.4);
}
.feature-body {
  padding: 42px 24px 24px;
}
.feature-body h3 {
  font-size: 19px;
  color: var(--secondary);
  margin-bottom: 10px;
}
.feature-body p {
  color: var(--text-muted);
  font-size: 14.5px;
}
.feature-body ul {
  margin-top: 14px;
}
.feature-body ul li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.feature-body ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ---------- 统计数字 ---------- */
.stats {
  background: linear-gradient(120deg, var(--secondary) 0%, var(--secondary-dark) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}
.stats::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255,107,44,.25);
}
.stats::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -100px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,180,0,.15);
}
.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item i {
  font-size: 38px;
  color: var(--gold);
  margin-bottom: 12px;
}
.stat-num {
  font-size: 46px;
  font-weight: 800;
  font-family: "DIN Alternate", "Bahnschrift", sans-serif;
}
.stat-label {
  color: rgba(255,255,255,.8);
  font-size: 15px;
  margin-top: 4px;
}

/* ---------- 赛事推荐 ---------- */
.event-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.event-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
  display: flex;
  flex-direction: column;
}
.event-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.event-img {
  position: relative;
  height: 210px;
  overflow: hidden;
}
.event-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.event-card:hover .event-img img {
  transform: scale(1.07);
}
.event-date-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,.95);
  border-radius: 10px;
  text-align: center;
  padding: 6px 12px;
  box-shadow: var(--shadow-sm);
}
.event-date-badge b {
  display: block;
  color: var(--primary);
  font-size: 18px;
  line-height: 1.1;
}
.event-date-badge span {
  font-size: 11px;
  color: var(--text-muted);
}
.event-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
}
.event-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.event-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.event-body h3 a:hover {
  color: var(--primary);
}
.event-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.event-meta i {
  color: var(--primary);
  margin-right: 4px;
}
.event-body p {
  color: var(--text-muted);
  font-size: 14px;
  flex: 1;
}
.event-link {
  margin-top: 14px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.event-link:hover {
  gap: 10px;
}

/* ---------- 新闻资讯 ---------- */
.bg-light {
  background: var(--bg-light);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.news-img {
  height: 170px;
  overflow: hidden;
}
.news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-card:hover .news-img img {
  transform: scale(1.08);
}
.news-body {
  padding: 18px;
}
.news-cat {
  font-size: 12px;
  color: var(--primary);
  background: rgba(255,107,44,.1);
  padding: 3px 10px;
  border-radius: 50px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 10px;
}
.news-body h3 {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body h3 a:hover {
  color: var(--primary);
}
.news-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

/* ---------- 参与 CTA ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  border-radius: 22px;
  padding: 56px 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "♥";
  position: absolute;
  right: 30px;
  bottom: -20px;
  font-size: 160px;
  opacity: .12;
}
.cta-banner h3 {
  font-size: 28px;
  margin-bottom: 8px;
}
.cta-banner p {
  color: rgba(255,255,255,.92);
}

/* ---------- 合作伙伴 ---------- */
.partner-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}
.partner-item {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 16px 26px;
  background: #fff;
  font-weight: 700;
  color: var(--secondary);
  font-size: 17px;
  letter-spacing: 1px;
  transition: all .3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.partner-item i {
  color: var(--primary);
  font-size: 22px;
}
.partner-item:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

/* ---------- 面包屑 ---------- */
.page-banner {
  position: relative;
  color: #fff;
  padding: 92px 0 84px;
  text-align: center;
  overflow: hidden;
}
.page-banner .page-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.page-banner .page-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, rgba(22,42,110,.9), rgba(31,58,147,.75));
}
.page-banner h1 {
  font-size: 42px;
  margin-bottom: 10px;
}
.page-banner p {
  color: rgba(255,255,255,.85);
  max-width: 640px;
  margin: 0 auto 18px;
}
.breadcrumb {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  background: rgba(255,255,255,.15);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
}
.breadcrumb a:hover {
  color: var(--gold);
}
.breadcrumb i {
  font-size: 12px;
  color: var(--gold);
}

/* ---------- 新闻中心页 ---------- */
.news-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  border: 1px solid var(--border);
  background: #fff;
  padding: 9px 24px;
  border-radius: 50px;
  font-size: 14px;
  cursor: pointer;
  transition: all .3s ease;
  color: var(--text-main);
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(255,107,44,.35);
}

.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-item {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .35s ease;
  box-shadow: var(--shadow-sm);
  display: none;
}
.news-item.show {
  display: block;
  animation: fadeUp .5s ease;
}
.news-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.news-item-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.news-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-item:hover .news-item-img img {
  transform: scale(1.08);
}
.news-item-date {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,.95);
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 12px;
  color: var(--secondary);
  font-weight: 600;
}
.news-item-body {
  padding: 20px;
}
.news-item-body h3 {
  font-size: 17px;
  margin-bottom: 8px;
  line-height: 1.5;
}
.news-item-body h3 a:hover {
  color: var(--primary);
}
.news-item-body p {
  color: var(--text-muted);
  font-size: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item-foot {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}
.news-item-foot a {
  color: var(--primary);
  font-weight: 600;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 46px;
}
.pagination a, .pagination span {
  min-width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text-main);
  font-size: 14px;
  transition: all .3s ease;
}
.pagination a:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination .current {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(255,107,44,.3);
}

/* ---------- 关于我们 ---------- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.about-intro-img {
  position: relative;
}
.about-intro-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.about-exp {
  position: absolute;
  right: -20px;
  bottom: -24px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 16px;
  padding: 20px 26px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.about-exp b {
  font-size: 32px;
  display: block;
  line-height: 1.2;
}
.about-exp span {
  font-size: 13px;
  opacity: .9;
}
.about-intro-body h2 {
  font-size: 32px;
  color: var(--secondary);
  margin-bottom: 16px;
}
.about-intro-body h2 span {
  color: var(--primary);
}
.about-intro-body p {
  color: var(--text-muted);
  margin-bottom: 14px;
}
.about-points {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.about-point {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-light);
  border-radius: 10px;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--secondary);
}
.about-point i {
  color: var(--primary);
  font-size: 20px;
}

/* 使命愿景 */
.mv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.mv-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.mv-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}
.mv-ico {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(255,107,44,.35);
}
.mv-card:nth-child(2) .mv-ico {
  background: linear-gradient(135deg, var(--secondary), #4a6cf7);
  box-shadow: 0 10px 24px rgba(31,58,147,.3);
}
.mv-card:nth-child(3) .mv-ico {
  background: linear-gradient(135deg, var(--gold), #ff8c42);
  box-shadow: 0 10px 24px rgba(255,180,0,.35);
}
.mv-card h3 {
  font-size: 20px;
  color: var(--secondary);
  margin-bottom: 12px;
}
.mv-card p {
  color: var(--text-muted);
  font-size: 14.5px;
}

/* 发展历程 */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent), var(--secondary));
  border-radius: 3px;
}
.timeline-item {
  position: relative;
  margin-bottom: 34px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--primary);
  box-shadow: 0 0 0 5px rgba(255,107,44,.15);
}
.timeline-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.timeline-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(6px);
}
.timeline-year {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 14px;
  margin-bottom: 10px;
}
.timeline-card h3 {
  font-size: 18px;
  color: var(--secondary);
  margin-bottom: 6px;
}
.timeline-card p {
  color: var(--text-muted);
  font-size: 14px;
}

/* 团队 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  padding: 26px 18px;
  transition: all .35s ease;
  box-shadow: var(--shadow-sm);
}
.team-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}
.team-avatar {
  width: 96px;
  height: 96px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 38px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 22px rgba(255,107,44,.3);
}
.team-card h3 {
  font-size: 18px;
  color: var(--secondary);
}
.team-card span {
  display: block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin: 4px 0 10px;
}
.team-card p {
  color: var(--text-muted);
  font-size: 13px;
}

/* 荣誉 */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.honor-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.honor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.honor-card i {
  font-size: 40px;
  color: var(--gold);
  margin-bottom: 12px;
}
.honor-card b {
  display: block;
  font-size: 26px;
  color: var(--secondary);
}
.honor-card span {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 60px;
}
.contact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align: center;
  transition: all .35s ease;
  box-shadow: var(--shadow-sm);
}
.contact-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}
.contact-card i {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 14px;
}
.contact-card h3 {
  font-size: 17px;
  color: var(--secondary);
  margin-bottom: 8px;
}
.contact-card p {
  color: var(--text-muted);
  font-size: 14px;
}
.contact-card a:hover {
  color: var(--primary);
}

.contact-main {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
}
.contact-form-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 38px;
  box-shadow: var(--shadow-sm);
}
.contact-form-wrap h3 {
  font-size: 24px;
  color: var(--secondary);
  margin-bottom: 6px;
}
.contact-form-wrap > p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}
.form-group label i {
  color: var(--primary);
  margin-right: 4px;
}
.form-control {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-main);
  font-family: inherit;
  transition: all .3s ease;
  background: var(--bg-light);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255,107,44,.12);
  background: #fff;
}
textarea.form-control {
  resize: vertical;
  min-height: 130px;
}
.form-tip {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}
.form-msg {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 16px;
  display: none;
}
.form-msg.success {
  display: block;
  background: rgba(34,197,94,.1);
  color: #16a34a;
  border: 1px solid rgba(34,197,94,.3);
}
.form-msg.error {
  display: block;
  background: rgba(255,59,92,.08);
  color: #dc2626;
  border: 1px solid rgba(255,59,92,.3);
}

.contact-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.map-box {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  flex: 1;
  min-height: 280px;
}
.map-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.work-hours {
  background: linear-gradient(120deg, var(--secondary), var(--secondary-dark));
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 30px;
}
.work-hours h3 {
  margin-bottom: 12px;
  font-size: 20px;
}
.work-hours li {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(255,255,255,.2);
  font-size: 14px;
}
.work-hours li:last-child {
  border: none;
}
.work-hours li b {
  color: var(--gold);
  font-weight: 600;
}

/* 常见问题 */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .3s ease;
}
.faq-item.open {
  box-shadow: var(--shadow-sm);
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--secondary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.faq-q i {
  transition: transform .3s ease;
  color: var(--primary);
}
.faq-item.open .faq-q i {
  transform: rotate(180deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14.5px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #17223f;
  color: rgba(255,255,255,.75);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand .logo-text {
  color: #fff;
}
.footer-brand .logo-sub {
  color: rgba(255,255,255,.5);
}
.footer-brand p {
  margin: 18px 0 20px;
  font-size: 14px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: all .3s ease;
}
.footer-social a:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  transform: translateY(-4px);
}
.footer-col h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.footer-col ul li {
  margin-bottom: 12px;
  font-size: 14px;
}
.footer-col ul a:hover {
  color: var(--gold);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 14px;
}
.footer-contact i {
  color: var(--gold);
  margin-top: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}
.footer-bottom a:hover {
  color: var(--gold);
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 34px;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border: none;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(255,107,44,.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all .35s ease;
  z-index: 998;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  transform: translateY(-4px);
}

/* ---------- 滚动显示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-quick { grid-template-columns: repeat(2, 1fr); }
  .feature-grid, .event-grid, .mv-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .news-list { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro { grid-template-columns: 1fr; }
  .contact-main { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 60px 0; }
  .hero { min-height: 540px; padding: 90px 0; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .section-head h2 { font-size: 28px; }

  .topbar-left span:nth-child(2) { display: none; }
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform .35s ease;
    z-index: 998;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav ul {
    flex-direction: column;
    padding: 16px 20px 24px;
  }
  .main-nav a {
    padding: 13px 12px;
    border-bottom: 1px solid var(--border);
  }
  .main-nav a.active::after { display: none; }
  .hamburger { display: flex; }
  .header-actions .btn { display: none; }

  .feature-grid, .event-grid, .mv-grid,
  .news-grid, .news-list, .team-grid, .honor-grid {
    grid-template-columns: 1fr;
  }
  .hero-quick { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 26px; text-align: center; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 32px; }
  .timeline { padding-left: 30px; }
}

@media (max-width: 480px) {
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}