/* 开云体育官网 - kaiyun-yk.com */
:root {
  --primary: #1a5f3c;
  --primary-dark: #0f3d26;
  --accent: #d4af37;
  --accent-hover: #e8c547;
  --bg: #f8faf9;
  --bg-dark: #0d1117;
  --text: #1e293b;
  --text-light: #64748b;
  --white: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
  --radius: 12px;
  --max-w: 1200px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}

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

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }

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

/* Header */
.site-header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.logo-link { display: flex; align-items: center; gap: 12px; }
.logo-link img { width: 48px; height: 48px; border-radius: 8px; object-fit: cover; }
.logo-text { font-size: 1.25rem; font-weight: 700; color: var(--primary-dark); }
.logo-text span { color: var(--accent); }

.main-nav { display: flex; align-items: center; gap: 8px; }

.main-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--text);
  font-weight: 500;
  font-size: .95rem;
}

.main-nav a:hover,
.main-nav a.active { background: var(--primary); color: var(--white); }

.nav-cta {
  background: var(--accent) !important;
  color: var(--primary-dark) !important;
  font-weight: 600 !important;
}

.nav-cta:hover { background: var(--accent-hover) !important; }

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary-dark);
  transition: .3s;
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #2d8a5e 100%);
  color: var(--white);
  padding: 60px 20px 80px;
  text-align: center;
}

.hero h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); margin-bottom: 16px; line-height: 1.3; }
.hero-sub { font-size: 1.1rem; opacity: .9; max-width: 700px; margin: 0 auto 32px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.2); }

.btn-primary { background: var(--accent); color: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid var(--white); }
.btn-outline:hover { background: var(--white); color: var(--primary); }

/* Sections */
section { padding: 60px 20px; }
section:nth-child(even) { background: var(--white); }

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--primary-dark);
  margin-bottom: 12px;
}

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

.section-title .tag {
  display: inline-block;
  background: rgba(26,95,60,.1);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

/* Feature cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.feature-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  transition: transform .2s, box-shadow .2s;
}

.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), #2d8a5e);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--primary-dark); }
.feature-card p { color: var(--text-light); font-size: .95rem; }

/* Partners */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.partner-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border);
  transition: box-shadow .2s;
}

.partner-item:hover { box-shadow: var(--shadow); }
.partner-item img { width: 100%; height: 80px; object-fit: contain; margin-bottom: 8px; }
.partner-item p { font-size: .85rem; color: var(--text-light); }

/* Game categories */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.game-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
}

.game-card img { width: 100%; height: 180px; object-fit: cover; }
.game-card-body { padding: 20px; }
.game-card-body h3 { color: var(--primary-dark); margin-bottom: 8px; }
.game-card-body p { color: var(--text-light); font-size: .92rem; }

/* Content blocks */
.content-block {
  max-width: var(--max-w);
  margin: 0 auto;
}

.content-block h2 {
  font-size: 1.5rem;
  color: var(--primary-dark);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
}

.content-block h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin: 24px 0 12px;
}

.content-block p { margin-bottom: 16px; color: var(--text); }
.content-block ul, .content-block ol { margin: 12px 0 16px 24px; }
.content-block li { margin-bottom: 8px; }

/* Screenshots */
.screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.screenshot-item {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.screenshot-item img { width: 100%; }
.screenshot-item figcaption {
  padding: 12px;
  background: var(--white);
  text-align: center;
  font-size: .9rem;
  color: var(--text-light);
}

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

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after { content: "+"; font-size: 1.25rem; color: var(--accent); }
.faq-item.open .faq-question::after { content: "−"; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s;
}

.faq-item.open .faq-answer { max-height: 500px; }
.faq-answer p { padding: 0 20px 18px; color: var(--text-light); }

/* Providers logos */
.providers {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.provider-logo {
  background: var(--white);
  padding: 12px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.provider-logo img { height: 40px; width: auto; object-fit: contain; }

/* Internal links */
.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.internal-links a {
  padding: 10px 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: .9rem;
  transition: all .2s;
}

.internal-links a:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* Page hero (subpages) */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  padding: 48px 20px;
  text-align: center;
}

.page-hero h1 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: 12px; }
.page-hero p { opacity: .9; max-width: 600px; margin: 0 auto; }

.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

.page-content h2 { font-size: 1.35rem; color: var(--primary-dark); margin: 32px 0 14px; }
.page-content h3 { font-size: 1.1rem; color: var(--primary); margin: 24px 0 10px; }
.page-content p { margin-bottom: 14px; }
.page-content ul, .page-content ol { margin: 12px 0 16px 24px; }
.page-content li { margin-bottom: 6px; }

/* Forms */
.form-section {
  max-width: 480px;
  margin: 0 auto;
  padding: 40px 20px;
}

.form-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-card h2 { text-align: center; color: var(--primary-dark); margin-bottom: 8px; }
.form-card .form-desc { text-align: center; color: var(--text-light); margin-bottom: 28px; font-size: .95rem; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: .9rem; }

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color .2s;
}

.form-group input:focus { outline: none; border-color: var(--primary); }

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}

.form-submit:hover { background: var(--primary-dark); }

.form-footer { text-align: center; margin-top: 20px; font-size: .9rem; color: var(--text-light); }

.seo-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.seo-content h2 { font-size: 1.3rem; color: var(--primary-dark); margin-bottom: 14px; }
.seo-content p { color: var(--text-light); margin-bottom: 12px; font-size: .95rem; }

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.error-code { font-size: 6rem; font-weight: 800; color: var(--primary); line-height: 1; }
.error-page h1 { font-size: 1.75rem; margin: 16px 0; color: var(--primary-dark); }
.error-page p { color: var(--text-light); margin-bottom: 28px; }

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 48px 20px 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  max-width: var(--max-w);
  margin: 0 auto 32px;
}

.footer-col h4 { color: var(--white); margin-bottom: 16px; font-size: 1rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #94a3b8; font-size: .9rem; }
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #1e293b;
  max-width: var(--max-w);
  margin: 0 auto;
  font-size: .85rem;
}

.breadcrumb {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 20px 0;
  font-size: .85rem;
  color: var(--text-light);
}

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

/* Top ads bar */
.ads-wrap {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 10px 8px 6px;
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  background: transparent;
  margin: 0;
  gap: 4px;
}

#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
  box-sizing: border-box;
}

#ads figure { margin: 0; }

#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
}

#ads img {
  width: 65px;
  height: 65px;
  max-width: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(24, 24, 24, 0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
  display: block;
  border: none;
  background: linear-gradient(135deg, #fff, #fff);
}

#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(24, 24, 24, 0.18);
}

#ads figcaption,
#ads .caption {
  height: 15px;
  font-size: 11px;
  color: #666;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    opacity: 0;
    transition: .3s;
    pointer-events: none;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .main-nav a { width: 100%; text-align: center; padding: 14px; }

  .hero { padding: 40px 20px 60px; }
  section { padding: 40px 20px; }
}