/* 开云体育 kai-yun.live - 全局样式 */
:root {
  --primary: #1a5f2a;
  --primary-dark: #0f3d1a;
  --primary-light: #2d8a42;
  --accent: #f5c518;
  --accent-hover: #e6b800;
  --bg: #f8faf9;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-muted: #5a6270;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --max-width: 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;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-light);
}

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

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 16px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}

.logo-link:hover {
  color: var(--accent);
}

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  object-fit: cover;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.9);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.95rem;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.header-cta {
  display: flex;
  gap: 10px;
}

/* 汉堡菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: background 0.2s;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-overlay {
  display: none;
}

.mobile-nav-cta {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: #fff;
}

.btn-green {
  background: var(--primary);
  color: #fff;
}

.btn-green:hover {
  background: var(--primary-light);
  color: #fff;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  color: #fff;
  padding: 60px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 2.2rem;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 1.1rem;
  opacity: 0.92;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* Sections */
.section {
  padding: 64px 0;
}

.section-alt {
  background: #fff;
}

.section-title {
  font-size: 1.85rem;
  color: var(--primary-dark);
  margin-bottom: 12px;
  text-align: center;
}

.section-desc {
  text-align: center;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 40px;
}

/* Cards Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-body h3 {
  font-size: 1.15rem;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.card-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Feature blocks */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-content h2 {
  font-size: 1.5rem;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.feature-content p {
  color: var(--text-muted);
  margin-bottom: 12px;
}

.feature-img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Partners */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}

.partner-grid img {
  height: 50px;
  width: auto;
  object-fit: contain;
  filter: grayscale(20%);
  opacity: 0.85;
  transition: all 0.2s;
}

.partner-grid img:hover {
  filter: none;
  opacity: 1;
}

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

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

.faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--primary-dark);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 22px 18px;
  color: var(--text-muted);
}

/* Content article */
.content-page {
  padding: 48px 0 64px;
}

.content-page h1 {
  font-size: 2rem;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.content-page h2 {
  font-size: 1.4rem;
  color: var(--primary-dark);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
}

.content-page h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin: 24px 0 10px;
}

.content-page p {
  margin-bottom: 14px;
  color: var(--text);
}

.content-page ul,
.content-page ol {
  margin: 12px 0 16px 24px;
  color: var(--text-muted);
}

.content-page li {
  margin-bottom: 8px;
}

.content-page a {
  text-decoration: underline;
}

.breadcrumb {
  padding: 16px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* Form pages */
.form-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

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

.form-card h2 {
  font-size: 1.5rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.form-card .form-desc {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 95, 42, 0.15);
}

.form-footer {
  margin-top: 20px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.seo-content {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}

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

.seo-content h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin: 20px 0 10px;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 48px;
  border-radius: var(--radius);
  text-align: center;
  margin: 48px 0;
}

.cta-banner h2 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 24px;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1rem;
}

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

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* 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: 1.8rem;
  margin: 16px 0;
  color: var(--primary-dark);
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* Download section */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.download-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.download-card img {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
}

.download-card h3 {
  color: var(--primary-dark);
  margin-bottom: 10px;
}

/* Advantages */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.advantage-item {
  background: #fff;
  padding: 24px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--border);
}

.advantage-item .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.advantage-item h3 {
  font-size: 1rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.advantage-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Internal links */
.internal-links {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
  border: 1px solid var(--border);
}

.internal-links h3 {
  font-size: 1rem;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.internal-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  list-style: none;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid,
  .feature-row,
  .form-section,
  .footer-grid,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .feature-row.reverse {
    direction: ltr;
  }

  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
    order: 2;
  }

  .header-cta {
    display: none;
  }

  .main-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    height: 100dvh;
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: 80px 20px 28px;
    gap: 2px;
    transition: right 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    box-shadow: -6px 0 30px rgba(0, 0, 0, 0.25);
    flex-wrap: nowrap;
    order: 3;
  }

  body.nav-open .main-nav {
    right: 0;
  }

  .main-nav a {
    padding: 14px 18px;
    font-size: 1rem;
    border-radius: 8px;
    white-space: normal;
  }

  .mobile-nav-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
  }

  .mobile-nav-cta .btn {
    width: 100%;
    padding: 12px;
  }

  .mobile-nav-cta .btn-outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
  }

  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  body.nav-open .nav-overlay {
    opacity: 1;
    visibility: visible;
  }

  body.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  body.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  body.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header-inner {
    position: relative;
    z-index: 1002;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .header-cta .btn {
    padding: 8px 14px;
    font-size: 0.85rem;
  }
}

/* 顶部广告栏 */
.ads-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 18px 22px;
  background: transparent;
  margin: 0;
  min-height: 92px;
}

#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 80px;
  box-sizing: border-box;
}

#ads figure {
  margin: 0;
  text-align: center;
}

#ads img {
  width: 65px;
  height: 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);
  cursor: pointer;
}

#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
  padding: 4px;
}

#ads a:hover img,
#ads img:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 10px 24px rgba(24, 24, 24, 0.2);
}

#ads figcaption,
#ads .caption {
  height: 18px;
  font-size: 11px;
  color: #666;
  text-align: center;
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 6px;
  line-height: 18px;
}

@media (max-width: 576px) {
  .ads-bar {
    padding: 12px 0;
  }

  #ads {
    gap: 14px 16px;
    min-height: 86px;
  }

  #ads > div {
    width: 72px;
  }

  #ads img {
    width: 60px;
    height: 60px;
  }
}