:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: rgba(30, 30, 50, 0.75);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  --text-primary: #f0f0f5;
  --text-secondary: #b0b0c8;
  --text-muted: #7878a0;
  --accent: #e94560;
  --accent-hover: #ff5a75;
  --accent-glow: rgba(233, 69, 96, 0.35);
  --accent-secondary: #533483;
  --accent-tertiary: #0f3460;
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 70%, #533483 100%);
  --gradient-card: linear-gradient(145deg, rgba(233, 69, 96, 0.12), rgba(83, 52, 131, 0.08));
  --gradient-btn: linear-gradient(135deg, #e94560, #533483);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.25);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --nav-height: 64px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.6);
    --bg-glass-hover: rgba(255, 255, 255, 0.8);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a8;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-glass: rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --gradient-hero: linear-gradient(135deg, #e8e8f0 0%, #dce4f0 40%, #d0d8f0 70%, #e0d0f0 100%);
    --gradient-card: linear-gradient(145deg, rgba(233, 69, 96, 0.06), rgba(83, 52, 131, 0.04));
  }
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(233, 69, 96, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(83, 52, 131, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

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

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 0.6rem;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--gradient-btn);
  border-radius: 2px;
}

h3 {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  margin-bottom: 0.7rem;
  color: var(--text-primary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

blockquote {
  background: var(--bg-glass);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.4rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

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

time {
  font-size: 0.85rem;
  color: var(--text-muted);
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-glass);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

@media (prefers-color-scheme: light) {
  header[role="banner"] {
    background: rgba(255, 255, 255, 0.75);
  }
}

header[role="banner"]:hover {
  box-shadow: var(--shadow-sm);
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

header nav > a {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  white-space: nowrap;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity var(--transition-fast);
}

header nav > a:hover {
  opacity: 0.85;
}

header nav ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

header nav ul li a {
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

header nav ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
  transform: translateY(-1px);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  position: relative;
  z-index: 1;
}

section {
  margin-bottom: 3rem;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
  animation: fadeInUp 0.6s ease-out both;
}

section:hover {
  box-shadow: var(--shadow-md);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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; }

#hero {
  background: var(--gradient-hero);
  border: 1px solid var(--border-glass);
  padding: 3rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  margin-top: 2rem;
}

#hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(233, 69, 96, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(83, 52, 131, 0.12) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); opacity: 0.6; }
  100% { transform: translate(3%, -3%) scale(1.05); opacity: 1; }
}

#hero h1 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.5rem, 4.5vw, 2.8rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #e94560 50%, #533483 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (prefers-color-scheme: light) {
  #hero h1 {
    background: linear-gradient(135deg, #1a1a2e 0%, #e94560 50%, #533483 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

#hero p {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto 1rem;
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  color: var(--text-secondary);
  text-align: left;
}

#hero img {
  position: relative;
  z-index: 1;
  margin: 2rem auto 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  max-width: 100%;
}

#hero img:hover {
  transform: scale(1.02) translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 50px rgba(233, 69, 96, 0.35);
}

nav[aria-label="面包屑导航"] {
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

nav[aria-label="面包屑导航"] ol li {
  color: var(--text-muted);
}

nav[aria-label="面包屑导航"] ol li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--text-muted);
  opacity: 0.5;
}

nav[aria-label="面包屑导航"] ol li a {
  color: var(--text-secondary);
}

nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--accent);
}

aside[aria-label="站内搜索"] {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: box-shadow var(--transition-smooth);
}

aside[aria-label="站内搜索"]:hover {
  box-shadow: var(--shadow-sm);
}

aside[aria-label="站内搜索"] form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

aside[aria-label="站内搜索"] label {
  width: 100%;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

aside[aria-label="站内搜索"] input[type="search"] {
  flex: 1;
  min-width: 200px;
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-main);
  color: var(--text-primary);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

aside[aria-label="站内搜索"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

aside[aria-label="站内搜索"] input[type="search"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-glass-hover);
}

aside[aria-label="站内搜索"] button[type="submit"] {
  padding: 0.7rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-main);
  color: #ffffff;
  background: var(--gradient-btn);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
}

aside[aria-label="站内搜索"] button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

aside[aria-label="站内搜索"] button[type="submit"]:active {
  transform: translateY(0);
}

#news ul {
  display: grid;
  gap: 0.75rem;
}

#news ul li {
  padding: 0.85rem 1.25rem;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#news ul li:hover {
  transform: translateX(6px);
  background: var(--bg-glass-hover);
  box-shadow: var(--shadow-sm);
}

#news ul li time {
  display: inline-block;
  margin-right: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.82rem;
}

#articles article {
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  border-color: rgba(233, 69, 96, 0.25);
}

#articles article h3 {
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

#articles article:hover h3 {
  color: var(--accent);
}

#articles article p {
  font-size: 0.92rem;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  transition: all var(--transition-fast);
}

#articles article a:hover {
  background: var(--gradient-btn);
  color: #ffffff;
  border-color: transparent;
  transform: translateX(4px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

#articles article a::after {
  content: '→';
  transition: transform var(--transition-fast);
}

#articles article a:hover::after {
  transform: translateX(3px);
}

#faq h3 {
  margin-top: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

#faq h3:hover {
  color: var(--accent);
  padding-left: 0.5rem;
}

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

#faq p {
  font-size: 0.92rem;
  padding-left: 0.25rem;
}

#howto ol {
  counter-reset: step;
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 1rem 1.25rem 1rem 3.5rem;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  font-size: 0.92rem;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--gradient-btn);
  border-radius: 50%;
  box-shadow: 0 2px 8px var(--accent-glow);
}

#howto ol li:hover {
  transform: translateX(6px);
  background: var(--bg-glass-hover);
  box-shadow: var(--shadow-sm);
}

#contact ul {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0;
}

#contact ul li {
  padding: 0.75rem 1.25rem;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  font-size: 0.92rem;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

#contact ul li:hover {
  transform: translateX(4px);
  background: var(--bg-glass-hover);
}

#contact ul li a {
  font-weight: 600;
}

#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

#sitemap ul li a,
#links ul li a {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 100px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

#sitemap ul li a:hover,
#links ul li a:hover {
  color: #ffffff;
  background: var(--gradient-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

#legal h3 {
  margin-top: 1.25rem;
}

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

footer[role="contentinfo"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border-glass);
  text-align: center;
  position: relative;
  z-index: 1;
}

footer[role="contentinfo"] p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

footer[role="contentinfo"] a {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.5rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  background: var(--gradient-btn);
  border-radius: 100px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

footer[role="contentinfo"] a:hover {
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

@media (max-width: 1024px) {
  header nav {
    height: auto;
    min-height: var(--nav-height);
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1.25rem;
    gap: 0.5rem;
  }

  header nav ul {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.25rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

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

  header nav ul li a {
    font-size: 0.8rem;
    padding: 0.35rem 0.6rem;
  }

  section {
    padding: 1.5rem;
    border-radius: var(--radius-md);
  }

  #hero {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  main {
    padding: 0 1rem 2rem;
  }

  section {
    padding: 1.25rem;
    margin-bottom: 2rem;
    border-radius: var(--radius-md);
  }

  #hero {
    padding: 1.75rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-top: 1rem;
  }

  #hero h1 {
    font-size: 1.4rem;
  }

  #hero p {
    font-size: 0.88rem;
    text-align: left;
  }

  h2 {
    font-size: 1.2rem;
  }

  h3 {
    font-size: 1rem;
  }

  aside[aria-label="站内搜索"] form {
    flex-direction: column;
  }

  aside[aria-label="站内搜索"] input[type="search"] {
    min-width: 100%;
  }

  aside[aria-label="站内搜索"] button[type="submit"] {
    width: 100%;
  }

  #articles article {
    padding: 1.1rem;
  }

  #howto ol li {
    padding: 0.85rem 1rem 0.85rem 3rem;
  }

  #howto ol li::before {
    left: 0.75rem;
    width: 24px;
    height: 24px;
    font-size: 0.75rem;
  }

  #sitemap ul,
  #links ul {
    gap: 0.5rem;
  }

  #sitemap ul li a,
  #links ul li a {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
  }

  footer[role="contentinfo"] {
    padding: 2rem 1rem;
  }
}

@media (max-width: 380px) {
  header nav > a {
    font-size: 1rem;
  }

  header nav ul li a {
    font-size: 0.75rem;
    padding: 0.3rem 0.5rem;
  }

  section {
    padding: 1rem;
  }

  #hero {
    padding: 1.25rem 1rem;
  }
}

@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;
  }
}

::selection {
  background: var(--accent);
  color: #ffffff;
}

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

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

@media print {
  header[role="banner"],
  aside[aria-label="站内搜索"],
  footer[role="contentinfo"] a {
    display: none;
  }

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

  section {
    box-shadow: none;
    border: 1px solid #cccccc;
    break-inside: avoid;
  }
}