:root {
  --mango-primary: #FF6B35;
  --mango-primary-dark: #E55A2B;
  --mango-primary-light: #FF8F66;
  --mango-secondary: #FFB347;
  --mango-accent: #FF3D71;
  --mango-bg: #FFF8F3;
  --mango-bg-alt: #FFFFFF;
  --mango-card: rgba(255, 255, 255, 0.72);
  --mango-card-border: rgba(255, 107, 53, 0.18);
  --mango-text: #2D1B12;
  --mango-text-secondary: #6B4F42;
  --mango-text-muted: #9B8578;
  --mango-border: rgba(255, 107, 53, 0.15);
  --mango-shadow: 0 8px 32px rgba(255, 107, 53, 0.12);
  --mango-shadow-hover: 0 16px 48px rgba(255, 107, 53, 0.22);
  --mango-radius: 20px;
  --mango-radius-sm: 12px;
  --mango-radius-lg: 28px;
  --mango-blur: 16px;
  --mango-transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --mango-gradient: linear-gradient(135deg, #FF6B35 0%, #FFB347 50%, #FF3D71 100%);
  --mango-gradient-soft: linear-gradient(135deg, rgba(255, 107, 53, 0.08) 0%, rgba(255, 179, 71, 0.06) 50%, rgba(255, 61, 113, 0.08) 100%);
  --mango-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --mango-bg: #1A1210;
    --mango-bg-alt: #221816;
    --mango-card: rgba(42, 28, 24, 0.72);
    --mango-card-border: rgba(255, 107, 53, 0.22);
    --mango-text: #F5EAE4;
    --mango-text-secondary: #C4A99B;
    --mango-text-muted: #8A7065;
    --mango-border: rgba(255, 107, 53, 0.18);
    --mango-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --mango-shadow-hover: 0 16px 48px rgba(255, 107, 53, 0.2);
    --mango-gradient-soft: linear-gradient(135deg, rgba(255, 107, 53, 0.12) 0%, rgba(255, 179, 71, 0.08) 50%, rgba(255, 61, 113, 0.12) 100%);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--mango-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mango-text);
  background-color: var(--mango-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(255, 107, 53, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(255, 179, 71, 0.06), transparent 60%),
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(255, 61, 113, 0.06), transparent 60%);
  background-attachment: fixed;
  transition: background-color var(--mango-transition), color var(--mango-transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--mango-card);
  backdrop-filter: blur(var(--mango-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--mango-blur)) saturate(180%);
  border-bottom: 1px solid var(--mango-card-border);
  box-shadow: 0 2px 20px rgba(255, 107, 53, 0.08);
  transition: background var(--mango-transition), box-shadow var(--mango-transition);
}

header nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  height: 64px;
}

header nav::-webkit-scrollbar {
  display: none;
}

header nav a {
  position: relative;
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mango-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--mango-radius-sm);
  transition: color var(--mango-transition), background var(--mango-transition), transform var(--mango-transition);
  letter-spacing: 0.02em;
}

header nav a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--mango-gradient);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--mango-transition);
}

header nav a:hover {
  color: var(--mango-primary);
  background: rgba(255, 107, 53, 0.08);
  transform: translateY(-1px);
}

header nav a:hover::after {
  width: 60%;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

section {
  margin-bottom: 48px;
  padding: 40px 36px;
  background: var(--mango-card);
  backdrop-filter: blur(var(--mango-blur)) saturate(150%);
  -webkit-backdrop-filter: blur(var(--mango-blur)) saturate(150%);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-lg);
  box-shadow: var(--mango-shadow);
  transition: box-shadow var(--mango-transition), transform var(--mango-transition), border-color var(--mango-transition);
  opacity: 0;
  transform: translateY(30px);
  animation: mangoFadeUp 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

section:nth-child(1) { animation-delay: 0.05s; }
section:nth-child(2) { animation-delay: 0.1s; }
section:nth-child(3) { animation-delay: 0.15s; }
section:nth-child(4) { animation-delay: 0.2s; }
section:nth-child(5) { animation-delay: 0.25s; }
section:nth-child(6) { animation-delay: 0.3s; }
section:nth-child(7) { animation-delay: 0.35s; }
section:nth-child(8) { animation-delay: 0.4s; }
section:nth-child(9) { animation-delay: 0.45s; }
section:nth-child(10) { animation-delay: 0.5s; }
section:nth-child(11) { animation-delay: 0.55s; }
section:nth-child(12) { animation-delay: 0.6s; }
section:nth-child(13) { animation-delay: 0.65s; }
section:nth-child(14) { animation-delay: 0.7s; }
section:nth-child(15) { animation-delay: 0.75s; }
section:nth-child(16) { animation-delay: 0.8s; }
section:nth-child(17) { animation-delay: 0.85s; }

@keyframes mangoFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

section:hover {
  box-shadow: var(--mango-shadow-hover);
  border-color: rgba(255, 107, 53, 0.28);
}

#home {
  position: relative;
  overflow: hidden;
  background: var(--mango-gradient);
  border: none;
  box-shadow: 0 12px 48px rgba(255, 107, 53, 0.28);
  padding: 56px 40px;
  color: #FFFFFF;
}

#home::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: mangoFloat 8s ease-in-out infinite;
}

#home::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: mangoFloat 10s ease-in-out infinite reverse;
}

@keyframes mangoFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -20px) scale(1.08); }
}

#home h1 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

#home p {
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 14px;
  color: rgba(255, 255, 255, 0.94);
  max-width: 800px;
}

#home p:last-child {
  margin-bottom: 0;
}

h2 {
  position: relative;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--mango-text);
  margin-bottom: 24px;
  padding-bottom: 14px;
  letter-spacing: -0.01em;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 4px;
  background: var(--mango-gradient);
  border-radius: 4px;
  transition: width var(--mango-transition);
}

section:hover h2::after {
  width: 88px;
}

h3 {
  font-size: clamp(1.1rem, 2.4vw, 1.3rem);
  font-weight: 600;
  color: var(--mango-text);
  margin: 28px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--mango-primary);
  line-height: 1.4;
  transition: border-color var(--mango-transition), padding-left var(--mango-transition);
}

h3:hover {
  border-left-color: var(--mango-accent);
  padding-left: 18px;
}

h3:first-of-type {
  margin-top: 0;
}

h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--mango-primary);
  margin: 20px 0 10px;
  line-height: 1.4;
}

p {
  margin-bottom: 14px;
  color: var(--mango-text-secondary);
  line-height: 1.85;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--mango-primary);
  text-decoration: none;
  transition: color var(--mango-transition), opacity var(--mango-transition);
}

a:hover {
  color: var(--mango-accent);
}

ul, ol {
  margin: 14px 0;
  padding-left: 0;
  list-style: none;
}

ul li, ol li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--mango-text-secondary);
  line-height: 1.7;
  transition: transform var(--mango-transition), color var(--mango-transition);
}

ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 17px;
  width: 8px;
  height: 8px;
  background: var(--mango-gradient);
  border-radius: 50%;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

ul li:hover {
  transform: translateX(4px);
  color: var(--mango-text);
}

ul li:hover::before {
  transform: scale(1.3);
  box-shadow: 0 0 12px rgba(255, 107, 53, 0.5);
}

ol {
  counter-reset: mango-counter;
}

ol li {
  counter-increment: mango-counter;
  padding-left: 36px;
}

ol li::before {
  content: counter(mango-counter);
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--mango-gradient);
  border-radius: 50%;
  line-height: 1;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

ol li:hover {
  transform: translateX(4px);
  color: var(--mango-text);
}

ol li:hover::before {
  transform: scale(1.15);
  box-shadow: 0 0 12px rgba(255, 107, 53, 0.5);
}

blockquote {
  position: relative;
  margin: 18px 0;
  padding: 20px 24px 20px 48px;
  background: var(--mango-gradient-soft);
  border-left: 4px solid var(--mango-primary);
  border-radius: 0 var(--mango-radius-sm) var(--mango-radius-sm) 0;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), border-color var(--mango-transition);
}

blockquote::before {
  content: '\201C';
  position: absolute;
  left: 14px;
  top: 6px;
  font-size: 2.4rem;
  font-family: Georgia, serif;
  color: var(--mango-primary);
  opacity: 0.4;
  line-height: 1;
}

blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--mango-text-secondary);
}

blockquote:hover {
  transform: translateX(6px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.12);
  border-left-color: var(--mango-accent);
}

article {
  position: relative;
  margin-bottom: 20px;
  padding: 24px 28px;
  background: var(--mango-bg-alt);
  border: 1px solid var(--mango-border);
  border-radius: var(--mango-radius);
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.06);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), border-color var(--mango-transition);
  overflow: hidden;
}

article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--mango-gradient);
  border-radius: 4px 0 0 4px;
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--mango-transition);
}

article:hover {
  transform: translateY(-4px);
  box-shadow: var(--mango-shadow-hover);
  border-color: rgba(255, 107, 53, 0.3);
}

article:hover::before {
  transform: scaleY(1);
}

article h3 {
  margin-top: 0;
  border-left: none;
  padding-left: 0;
  font-size: 1.1rem;
}

article h3:hover {
  padding-left: 0;
}

article p:first-of-type {
  font-size: 0.85rem;
  color: var(--mango-text-muted);
  margin-bottom: 8px;
}

article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 20px;
  background: var(--mango-gradient);
  color: #FFFFFF;
  border-radius: 50px;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), filter var(--mango-transition);
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.25);
}

article a::after {
  content: '\2192';
  transition: transform var(--mango-transition);
}

article a:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
  filter: brightness(1.08);
}

article a:hover::after {
  transform: translateX(4px);
}

#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}

#sitemap ul li {
  padding: 0;
}

#sitemap ul li::before {
  display: none;
}

#sitemap ul li a {
  display: block;
  padding: 12px 18px;
  background: var(--mango-gradient-soft);
  border: 1px solid var(--mango-border);
  border-radius: var(--mango-radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  text-align: center;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), background var(--mango-transition), color var(--mango-transition);
}

#sitemap ul li a:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.18);
  background: var(--mango-gradient);
  color: #FFFFFF;
}

#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

#links ul li {
  padding: 0;
}

#links ul li::before {
  display: none;
}

#links ul li a {
  display: inline-block;
  padding: 10px 22px;
  background: var(--mango-gradient-soft);
  border: 1px solid var(--mango-border);
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.92rem;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), background var(--mango-transition), color var(--mango-transition);
}

#links ul li a:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.22);
  background: var(--mango-gradient);
  color: #FFFFFF;
}

#faq h3 {
  cursor: default;
  transition: color var(--mango-transition), border-color var(--mango-transition), padding-left var(--mango-transition);
}

#faq h3:hover {
  color: var(--mango-primary);
}

#contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}

#contact p::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--mango-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

footer {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 24px 48px;
  text-align: center;
  border-top: 1px solid var(--mango-border);
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--mango-gradient);
  border-radius: 0 0 4px 4px;
}

footer p {
  font-size: 0.88rem;
  color: var(--mango-text-muted);
  margin-bottom: 12px;
  line-height: 1.8;
}

footer p:last-child {
  margin-bottom: 0;
}

footer a {
  color: var(--mango-text-secondary);
  font-size: 0.88rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color var(--mango-transition), background var(--mango-transition);
}

footer a:hover {
  color: var(--mango-primary);
  background: rgba(255, 107, 53, 0.08);
}

::selection {
  background: rgba(255, 107, 53, 0.25);
  color: var(--mango-text);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--mango-primary), var(--mango-secondary));
  border-radius: 8px;
  transition: background var(--mango-transition);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--mango-accent), var(--mango-primary));
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 64px;
  }

  header nav {
    padding: 0 12px;
    height: 56px;
    gap: 2px;
  }

  header nav a {
    padding: 6px 10px;
    font-size: 13px;
  }

  main {
    padding: 0 12px 40px;
  }

  section {
    padding: 24px 18px;
    margin-bottom: 24px;
    border-radius: var(--mango-radius);
  }

  #home {
    padding: 32px 20px;
  }

  #home h1 {
    font-size: 1.35rem;
  }

  #home p {
    font-size: 0.95rem;
  }

  h2 {
    font-size: 1.25rem;
    margin-bottom: 18px;
  }

  h3 {
    font-size: 1.05rem;
    margin: 20px 0 10px;
  }

  article {
    padding: 18px 16px;
  }

  article a {
    width: 100%;
    justify-content: center;
    padding: 10px 20px;
  }

  blockquote {
    padding: 16px 18px 16px 40px;
  }

  #sitemap ul {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  #sitemap ul li a {
    padding: 10px 12px;
    font-size: 0.85rem;
  }

  #links ul li a {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  footer {
    padding: 28px 16px 36px;
  }

  footer p {
    font-size: 0.82rem;
  }
}

@media (max-width: 480px) {
  header nav {
    height: 50px;
  }

  header nav a {
    padding: 5px 8px;
    font-size: 12px;
  }

  section {
    padding: 20px 14px;
    border-radius: var(--mango-radius-sm);
  }

  #home {
    padding: 28px 16px;
  }

  #home h1 {
    font-size: 1.2rem;
  }

  #sitemap ul {
    grid-template-columns: 1fr;
  }

  ul li, ol li {
    font-size: 0.92rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  section {
    opacity: 1;
    transform: none;
  }
}

@media print {
  header,
  footer,
  #home::before,
  #home::after {
    display: none;
  }

  body {
    background: #FFFFFF;
    color: #000000;
  }

  section {
    box-shadow: none;
    border: 1px solid #CCCCCC;
    opacity: 1;
    transform: none;
    page-break-inside: avoid;
  }
}