/* =========================================
   开云体育官方网站 - 主样式表
   zh-login-kysport.com
   ========================================= */

/* CSS Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #1a1a2e;
  background: #fff;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: #0057e7; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---- Variables ---- */
:root {
  --brand: #0057e7;
  --brand-dark: #003ba3;
  --accent: #ff6b00;
  --accent-light: #ff8c38;
  --text: #1a1a2e;
  --text-light: #555;
  --bg-light: #f4f7ff;
  --bg-dark: #0a0e1a;
  --white: #fff;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,87,231,.10);
  --shadow-hover: 0 8px 40px rgba(0,87,231,.18);
  --transition: .3s ease;
}

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: var(--white); }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text);
}
.section-title span { color: var(--brand); }
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 50px;
}
.section-dark .section-title { color: var(--white); }
.section-dark .section-subtitle { color: rgba(255,255,255,.7); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 50px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-primary {
  background: var(--brand);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,87,231,.3);
}
.btn-primary:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,87,231,.4);
  color: var(--white);
}
.btn-accent {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(255,107,0,.3);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  color: var(--white);
}
.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
  background: transparent;
}
.btn-outline:hover {
  background: var(--white);
  color: var(--brand);
}

/* ---- Header & Nav ---- */
#header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,14,26,.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,87,231,.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .5px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 900;
}
.logo span { color: var(--accent); }
nav ul {
  display: flex;
  gap: 4px;
}
nav ul li a {
  color: rgba(255,255,255,.85);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: .9rem;
  font-weight: 500;
  transition: all var(--transition);
}
nav ul li a:hover,
nav ul li a.active {
  color: var(--white);
  background: rgba(0,87,231,.3);
}
.nav-cta {
  background: var(--brand) !important;
  color: var(--white) !important;
  border-radius: 50px !important;
  padding: 8px 20px !important;
}
.nav-cta:hover { background: var(--brand-dark) !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---- Search Bar ---- */
.search-bar-wrap {
  background: rgba(0,87,231,.06);
  border-bottom: 1px solid rgba(0,87,231,.1);
  padding: 10px 0;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 700px;
  margin: 0 auto;
}
.search-bar-inner input {
  flex: 1;
  padding: 10px 18px;
  border: 1.5px solid rgba(0,87,231,.25);
  border-radius: 50px;
  font-size: .95rem;
  outline: none;
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition);
}
.search-bar-inner input:focus { border-color: var(--brand); }
.search-bar-inner button {
  padding: 10px 24px;
  background: var(--brand);
  color: var(--white);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  transition: background var(--transition);
}
.search-bar-inner button:hover { background: var(--brand-dark); }
#search-tips {
  text-align: center;
  font-size: .82rem;
  color: var(--text-light);
  margin-top: 5px;
}

/* ---- Hero Banner ---- */
#hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-slider {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,14,26,.85) 40%, rgba(10,14,26,.3) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  color: var(--white);
  padding: 80px 0;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,107,0,.2);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
}
.hero-content h1 span { color: var(--accent); }
.hero-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 30px;
  max-width: 560px;
}
.hero-advantages {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.hero-advantages li {
  background: rgba(0,87,231,.2);
  border: 1px solid rgba(0,87,231,.4);
  color: rgba(255,255,255,.9);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 500;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,.15);
}
.hero-stat h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}
.hero-stat p { font-size: .85rem; color: rgba(255,255,255,.6); }
.hero-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 8px;
}
.hero-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: all var(--transition);
}
.hero-dots span.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ---- Video Grid Section ---- */
#video-section { background: var(--bg-dark); }
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.video-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 60px;
  height: 60px;
  background: rgba(255,107,0,.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(.85);
  transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  border-left: 22px solid #fff;
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  margin-left: 4px;
}
.video-meta {
  padding: 14px 16px;
  background: #161b2e;
}
.video-tag {
  display: inline-block;
  background: rgba(0,87,231,.2);
  color: #7ba7ff;
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
  font-weight: 600;
}
.video-meta h4 {
  font-size: .9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
  line-height: 1.4;
}
.video-stats {
  display: flex;
  gap: 14px;
  font-size: .78rem;
  color: rgba(255,255,255,.45);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }
.video-live-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: #e00;
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: .5px;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .6; }
}

/* ---- About Section ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.about-text h2 { font-size: 1.9rem; font-weight: 800; margin-bottom: 16px; }
.about-text h2 span { color: var(--brand); }
.about-text p { color: var(--text-light); margin-bottom: 20px; line-height: 1.8; }
.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
}
.value-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
}
.value-icon {
  width: 32px;
  height: 32px;
  background: var(--brand);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: .9rem;
  flex-shrink: 0;
}
.timeline {
  position: relative;
  padding-left: 28px;
  margin-top: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand), var(--accent));
}
.timeline-item {
  position: relative;
  margin-bottom: 20px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 2px var(--brand);
}
.timeline-item h5 { font-size: .9rem; font-weight: 700; color: var(--brand); }
.timeline-item p { font-size: .85rem; color: var(--text-light); }

/* ---- Services Section ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(0,87,231,.08);
  text-align: center;
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--brand);
}
.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--brand), #4d8ef7);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.6rem;
}
.service-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: .85rem; color: var(--text-light); line-height: 1.7; }
.service-card .btn { margin-top: 16px; font-size: .82rem; padding: 8px 20px; }

/* ---- Cases Section ---- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-img {
  height: 200px;
  overflow: hidden;
}
.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.case-card:hover .case-img img { transform: scale(1.05); }
.case-body { padding: 20px; }
.case-tag {
  display: inline-block;
  background: rgba(0,87,231,.08);
  color: var(--brand);
  font-size: .75rem;
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 10px;
}
.case-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.case-body p { font-size: .85rem; color: var(--text-light); line-height: 1.6; }
.case-result {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: .82rem;
  color: var(--brand);
  font-weight: 600;
}

/* ---- News Section ---- */
.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}
.news-main .news-card-large {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
}
.news-card-large .news-img {
  height: 280px;
  overflow: hidden;
}
.news-card-large .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.news-card-large:hover .news-img img { transform: scale(1.03); }
.news-card-large .news-body { padding: 24px; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  gap: 14px;
  padding: 14px;
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.news-item:hover { transform: translateX(4px); box-shadow: var(--shadow-hover); }
.news-item-img {
  width: 80px;
  height: 60px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}
.news-item-img img { width: 100%; height: 100%; object-fit: cover; }
.news-item-body h4 { font-size: .88rem; font-weight: 600; margin-bottom: 4px; line-height: 1.4; }
.news-item-body p { font-size: .78rem; color: var(--text-light); }
.news-tag {
  display: inline-block;
  background: rgba(255,107,0,.1);
  color: var(--accent);
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 6px;
}
.news-date { font-size: .78rem; color: var(--text-light); }

/* ---- Reviews Section ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border-top: 3px solid var(--brand);
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.review-stars { color: #f5a623; font-size: 1rem; margin-bottom: 12px; }
.review-text { font-size: .88rem; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}
.review-user-info h5 { font-size: .88rem; font-weight: 700; }
.review-user-info p { font-size: .75rem; color: var(--text-light); }

/* ---- Partners Section ---- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  align-items: center;
  margin-bottom: 50px;
}
.partner-logo {
  background: var(--white);
  border: 1px solid rgba(0,87,231,.1);
  border-radius: 8px;
  padding: 16px 12px;
  text-align: center;
  font-weight: 700;
  font-size: .85rem;
  color: var(--text-light);
  transition: all var(--transition);
}
.partner-logo:hover { border-color: var(--brand); color: var(--brand); box-shadow: var(--shadow); }
.cooperation-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.coop-step {
  text-align: center;
  padding: 24px 16px;
}
.coop-step-num {
  width: 48px;
  height: 48px;
  background: var(--brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  margin: 0 auto 14px;
}
.coop-step h4 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.coop-step p { font-size: .82rem; color: var(--text-light); }

/* ---- FAQ Section ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid rgba(0,87,231,.12);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: .95rem;
  background: var(--white);
  transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-light); }
.faq-question.open { background: var(--bg-light); color: var(--brand); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0,87,231,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--brand);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-question.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding: 0 22px;
  font-size: .9rem;
  color: var(--text-light);
  line-height: 1.8;
  background: var(--bg-light);
}
.faq-answer.open { max-height: 200px; padding: 16px 22px; }

/* ---- Contact Section ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.contact-info h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 24px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(0,87,231,.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: var(--brand);
}
.contact-item-text h5 { font-size: .9rem; font-weight: 700; margin-bottom: 2px; }
.contact-item-text p { font-size: .85rem; color: var(--text-light); }
.map-placeholder {
  height: 220px;
  background: linear-gradient(135deg, #e8f0fe, #c5d8ff);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  font-size: .9rem;
  font-weight: 600;
  margin-top: 24px;
  border: 2px dashed rgba(0,87,231,.2);
}
.contact-form { background: var(--white); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.contact-form h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid rgba(0,87,231,.15);
  border-radius: 8px;
  font-size: .9rem;
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
  color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--brand); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* ---- Footer ---- */
#footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { font-size: .85rem; line-height: 1.8; margin-bottom: 20px; }
.footer-qr-row { display: flex; gap: 20px; }
.footer-qr { text-align: center; }
.footer-qr img {
  width: 80px;
  height: 80px;
  border-radius: 6px;
  border: 2px solid rgba(255,255,255,.1);
}
.footer-qr p { font-size: .72rem; margin-top: 6px; color: rgba(255,255,255,.5); }
.footer-col h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  color: rgba(255,255,255,.7);
  transition: all var(--transition);
}
.social-btn:hover { background: var(--brand); color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .82rem;
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ---- Breadcrumb ---- */
.breadcrumb {
  background: var(--bg-light);
  padding: 12px 0;
  font-size: .85rem;
  color: var(--text-light);
}
.breadcrumb a { color: var(--brand); }
.breadcrumb span { margin: 0 6px; }

/* ---- Page Hero ---- */
.page-hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #0d1a4a 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
}
.page-hero h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 1rem; color: rgba(255,255,255,.7); }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 50px 0; }
  .section-title { font-size: 1.6rem; }
  nav { display: none; position: fixed; top: 70px; left: 0; right: 0; background: rgba(10,14,26,.98); padding: 20px; flex-direction: column; }
  nav.open { display: flex; }
  nav ul { flex-direction: column; gap: 4px; }
  nav ul li a { display: block; padding: 12px 16px; }
  .hamburger { display: flex; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-stats { gap: 20px; }
  .about-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cooperation-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .hero-stats { flex-direction: column; gap: 14px; }
  .about-values { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .cooperation-steps { grid-template-columns: 1fr; }
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }
.tag-live { background: #e00; color: #fff; }
.tag-hot { background: var(--accent); color: #fff; }
.tag-new { background: #00a854; color: #fff; }
.highlight { color: var(--brand); }
.highlight-accent { color: var(--accent); }

/* ---- Lazy load placeholder ---- */
img[data-src] { background: #e8eef7; }

/* ---- Scroll to top ---- */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,87,231,.4);
  z-index: 999;
  transition: all var(--transition);
}
#back-to-top.show { display: flex; }
#back-to-top:hover { background: var(--brand-dark); transform: translateY(-3px); }

/* ========================================
   开云体育 - 补充样式（视频标签、通知条、悬浮客服等）
   ======================================== */

/* === 通知条 === */
.notice-bar {
  background: linear-gradient(90deg, #c0291e, #e8372b);
  padding: 8px 0;
  text-align: center;
  font-size: .82rem;
  color: #fff;
  font-weight: 500;
}
.notice-bar a { color: #fff; text-decoration: underline; }

/* === 视频分类标签 === */
.video-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.video-tab {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.7);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: .88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .25s;
}
.video-tab.active, .video-tab:hover {
  background: #e8372b;
  border-color: #e8372b;
  color: #fff;
}

/* === 视频搜索关键词 === */
.video-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0;
}
.video-keyword-tag {
  background: rgba(232,55,43,.1);
  border: 1px solid rgba(232,55,43,.3);
  color: #e8372b;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .25s;
}
.video-keyword-tag:hover {
  background: #e8372b;
  color: #fff;
}

/* === 悬浮客服按钮 === */
.float-service {
  position: fixed;
  bottom: 84px;
  right: 28px;
  z-index: 998;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 44px;
  height: 44px;
  background: rgba(22,27,34,.9);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all .25s;
  box-shadow: 0 4px 16px rgba(0,0,0,.4);
  cursor: pointer;
  color: #fff;
  text-decoration: none;
}
.float-btn:hover {
  background: #e8372b;
  border-color: #e8372b;
  transform: scale(1.1);
  color: #fff;
}

/* === 合作招商 === */
.coop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.coop-text h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.coop-text h2 span { color: #e8372b; }
.coop-text p { color: rgba(255,255,255,.7); margin-bottom: 14px; line-height: 1.8; }
.coop-img img { width: 100%; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.45); }

/* === 页面Hero（内页）=== */
.page-hero {
  background: linear-gradient(135deg, #0a0e1a 0%, #161b22 100%);
  border-bottom: 1px solid rgba(255,255,255,.1);
  padding: 52px 0 44px;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 1rem;
  color: rgba(255,255,255,.6);
  max-width: 600px;
  margin: 0 auto;
}

/* === 面包屑 === */
.breadcrumb {
  background: rgba(0,87,231,.04);
  border-bottom: 1px solid rgba(0,87,231,.1);
  padding: 10px 0;
  font-size: .85rem;
  color: rgba(255,255,255,.5);
}
.breadcrumb a { color: rgba(255,255,255,.5); }
.breadcrumb a:hover { color: #e8372b; }
.breadcrumb span { margin: 0 6px; }
.breadcrumb span:last-child { color: rgba(255,255,255,.8); margin: 0; }

/* === 联系页面 === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3, .contact-form h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.contact-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.contact-item-text h5 {
  font-size: .88rem;
  font-weight: 600;
  color: rgba(255,255,255,.5);
  margin-bottom: 2px;
}
.contact-item-text p { font-size: .92rem; }
.map-placeholder {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  padding: 28px;
  text-align: center;
  color: rgba(255,255,255,.4);
  font-size: .88rem;
  margin-top: 20px;
  line-height: 1.8;
}

/* 联系表单 */
.contact-form {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  padding: 28px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: rgba(255,255,255,.5);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  padding: 11px 16px;
  color: #fff;
  font-size: .92rem;
  outline: none;
  transition: border-color .25s;
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: #e8372b; }
.form-group select option { background: #161b22; color: #fff; }
.form-group textarea { min-height: 120px; resize: vertical; }

/* === 统计数据 === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
}
.stat-card {
  text-align: center;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  padding: 28px 20px;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  color: #e8372b;
  margin-bottom: 6px;
}
.stat-label { font-size: .88rem; color: rgba(255,255,255,.5); }

/* === 用户评价 === */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  padding: 24px;
}
.review-stars { color: #f5a623; font-size: 1rem; margin-bottom: 12px; }
.review-text {
  font-size: .9rem;
  color: rgba(255,255,255,.65);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e8372b, #c0291e);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: .9rem;
  flex-shrink: 0;
}
.review-name { font-weight: 600; color: #fff; font-size: .9rem; }
.review-role { font-size: .78rem; color: rgba(255,255,255,.4); }

/* === 合作伙伴 === */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.partner-logo {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  font-size: .88rem;
  font-weight: 600;
  color: rgba(255,255,255,.5);
  transition: all .25s;
}
.partner-logo:hover {
  border-color: #e8372b;
  color: #fff;
}

/* === 图片懒加载 === */
img[data-src] { background: rgba(255,255,255,.04); min-height: 40px; }
img.loaded { animation: fadeIn .4s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* === 响应式补充 === */
@media (max-width: 768px) {
  .coop-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .float-service { bottom: 72px; right: 16px; }
}
@media (max-width: 480px) {
  .page-hero { padding: 36px 0 28px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}