:root {
  --bg-primary: #0b0e1a;
  --bg-secondary: #12172b;
  --bg-tertiary: #1a1f3a;
  --bg-card: rgba(26, 31, 58, 0.65);
  --bg-card-hover: rgba(36, 42, 78, 0.85);
  --bg-glass: rgba(26, 31, 58, 0.45);
  --text-primary: #eef1ff;
  --text-secondary: #a8b0d3;
  --text-muted: #6b7399;
  --accent: #e94560;
  --accent-hover: #ff5c77;
  --accent-glow: rgba(233, 69, 96, 0.35);
  --accent-2: #533483;
  --accent-3: #0f8bff;
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 70%, #533483 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #533483 100%);
  --gradient-card: linear-gradient(145deg, rgba(26, 31, 58, 0.8), rgba(18, 23, 43, 0.6));
  --border-color: rgba(168, 176, 211, 0.12);
  --border-hover: rgba(233, 69, 96, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 32px rgba(233, 69, 96, 0.2);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --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);
  --max-width: 1200px;
  --header-height: 72px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f4f6fc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef1f9;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.55);
    --text-primary: #1a1a2e;
    --text-secondary: #4a5270;
    --text-muted: #8a91ad;
    --accent: #d6336c;
    --accent-hover: #e94560;
    --accent-glow: rgba(214, 51, 108, 0.25);
    --gradient-hero: linear-gradient(135deg, #e8ecff 0%, #dfe6ff 40%, #f0e6ff 70%, #ffe6ef 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(244, 246, 252, 0.7));
    --border-color: rgba(26, 31, 58, 0.1);
    --border-hover: rgba(214, 51, 108, 0.35);
    --shadow-sm: 0 2px 8px rgba(26, 31, 58, 0.06);
    --shadow-md: 0 8px 24px rgba(26, 31, 58, 0.1);
    --shadow-lg: 0 16px 48px rgba(26, 31, 58, 0.14);
    --shadow-glow: 0 0 32px rgba(214, 51, 108, 0.12);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(83, 52, 131, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(233, 69, 96, 0.1), transparent);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

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;
}

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

ul,
ol {
  padding-left: 1.4em;
}

li {
  margin-bottom: 0.4em;
}

li::marker {
  color: var(--accent);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.6rem;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  background: var(--gradient-accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

h3 {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

strong {
  color: var(--text-primary);
  font-weight: 600;
}

blockquote {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem 1.25rem 2.25rem;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  left: 0.6rem;
  top: 0.2rem;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.5;
  font-family: Georgia, serif;
}

blockquote p {
  margin-bottom: 0.5rem;
  font-style: italic;
  color: var(--text-secondary);
}

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

body > a[href="#main-content"] {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: top var(--transition-fast);
}

body > a[href="#main-content"]:focus {
  top: 16px;
  color: #fff;
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding: 0.75rem clamp(1rem, 4vw, 2.5rem);
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.brand-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-bar svg {
  border-radius: 10px;
  box-shadow: 0 0 20px var(--accent-glow);
  transition: transform var(--transition-bounce), box-shadow var(--transition-smooth);
}

.brand-bar:hover svg {
  transform: rotate(-6deg) scale(1.05);
  box-shadow: 0 0 28px var(--accent-glow);
}

.brand-bar p {
  margin: 0;
  line-height: 1.35;
}

.brand-bar p:first-of-type strong {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.brand-bar p:last-of-type {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

header nav[aria-label="主导航"] {
  flex: 1 1 auto;
  min-width: 0;
}

header nav[aria-label="主导航"] ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

header nav[aria-label="主导航"] li {
  margin: 0;
}

header nav[aria-label="主导航"] a {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

header nav[aria-label="主导航"] a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition-smooth);
}

header nav[aria-label="主导航"] a:hover,
header nav[aria-label="主导航"] a:focus-visible {
  color: var(--text-primary);
  background: rgba(233, 69, 96, 0.1);
  transform: translateY(-1px);
}

header nav[aria-label="主导航"] a:hover::after {
  width: 60%;
}

header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  position: relative;
}

header form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

header form[role="search"] input[type="search"] {
  width: clamp(140px, 18vw, 220px);
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), width var(--transition-smooth);
}

header form[role="search"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

header form[role="search"] input[type="search"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  width: clamp(180px, 22vw, 260px);
}

header form[role="search"] button[type="submit"] {
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

header form[role="search"] button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
  filter: brightness(1.1);
}

header form[role="search"] button[type="submit"]:active {
  transform: translateY(0);
}

main {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 2rem) 4rem;
}

main > section {
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  background: var(--gradient-card);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(28px);
  animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

main > section:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#hero {
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  background-size: 200% 200%;
  animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards, gradientShift 14s ease infinite;
  border: 1px solid var(--border-hover);
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

#hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -15%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--accent-glow), transparent 65%);
  pointer-events: none;
  animation: floatGlow 8s ease-in-out infinite;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -35%;
  left: -10%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(83, 52, 131, 0.35), transparent 65%);
  pointer-events: none;
  animation: floatGlow 10s ease-in-out infinite reverse;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.8; }
  50% { transform: translate(-20px, 20px) scale(1.1); opacity: 1; }
}

#hero h1 {
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--text-primary) 20%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#hero p {
  position: relative;
  z-index: 1;
  max-width: 72ch;
  color: var(--text-secondary);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
}

#hero svg {
  position: relative;
  z-index: 1;
  margin-top: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

#hero svg:hover {
  transform: scale(1.015);
  box-shadow: var(--shadow-lg), 0 0 40px var(--accent-glow);
}

main > section > article {
  position: relative;
  margin-bottom: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth), background var(--transition-smooth);
}

main > section > article:last-child {
  margin-bottom: 0;
}

main > section > article:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md), 0 0 24px var(--accent-glow);
}

main > section > article h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  transition: color var(--transition-fast);
}

main > section > article:hover h3 {
  color: var(--accent);
}

main > section > article p {
  margin-bottom: 0.6rem;
  font-size: 0.925rem;
}

main > section > article > p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

main > section > article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: rgba(233, 69, 96, 0.12);
  border: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), gap var(--transition-fast);
}

main > section > article a::after {
  content: "\2192";
  transition: transform var(--transition-fast);
}

main > section > article a:hover {
  background: rgba(233, 69, 96, 0.22);
  border-color: var(--border-hover);
  transform: translateX(2px);
}

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

#articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

#articles > h2,
#articles > p {
  grid-column: 1 / -1;
}

#faq h3 {
  position: relative;
  padding: 0.9rem 1.25rem;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  cursor: default;
  transition: background var(--transition-smooth), border-color var(--transition-smooth), transform var(--transition-smooth);
}

#faq h3:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

#faq p {
  padding: 0 0.5rem 0 1.25rem;
  font-size: 0.925rem;
}

#howto ol {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  position: relative;
  padding: 0.85rem 1rem 0.85rem 3.25rem;
  margin-bottom: 0.6rem;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  counter-increment: step;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), background var(--transition-smooth);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 0.85rem;
  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: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 2px 10px var(--accent-glow);
}

#howto ol li:hover {
  transform: translateX(4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

#news ul,
#contact ul,
#sitemap ul,
#links ul {
  list-style: none;
  padding-left: 0;
}

#news li {
  position: relative;
  padding: 0.7rem 1rem 0.7rem 1.75rem;
  margin-bottom: 0.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
}

#news li::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

#news li:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

#contact ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}

#contact li {
  padding: 0.85rem 1.1rem;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

#contact li:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-accent);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--accent-glow);
}

footer[role="contentinfo"] {
  position: relative;
  padding: clamp(2rem, 4vw, 3rem) clamp(1rem, 4vw, 2.5rem) 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(90%, 800px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

footer[role="contentinfo"] section {
  padding: 1.25rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-smooth), transform var(--transition-smooth);
}

footer[role="contentinfo"] section:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

footer[role="contentinfo"] h2 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
}

footer[role="contentinfo"] h2::after {
  width: 32px;
  height: 2px;
}

footer[role="contentinfo"] p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.65;
}

footer[role="contentinfo"] nav[aria-label="页脚导航"] {
  grid-column: 1 / -1;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

footer[role="contentinfo"] nav[aria-label="页脚导航"] ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

footer[role="contentinfo"] nav[aria-label="页脚导航"] li {
  margin: 0;
}

footer[role="contentinfo"] nav[aria-label="页脚导航"] a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

footer[role="contentinfo"] nav[aria-label="页脚导航"] a:hover {
  color: var(--accent);
}

#products ul,
#notes ul,
#services ul {
  list-style: none;
  padding-left: 0;
}

#products ul li,
#notes ul li,
#services ul li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

#products ul li::before,
#notes ul li::before,
#services ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--gradient-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 8px var(--accent-glow);
}

#products ul li:hover,
#notes ul li:hover,
#services ul li:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

#about ul {
  list-style: none;
  padding-left: 0;
  position: relative;
}

#about ul li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.65rem;
  color: var(--text-secondary);
}

#about ul li::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.6em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

#about ul li:hover::before {
  transform: scale(1.4);
  box-shadow: 0 0 16px var(--accent-glow);
}

#about ul li::after {
  content: "";
  position: absolute;
  left: calc(0.35rem + 4px);
  top: calc(0.6em + 12px);
  width: 1px;
  height: calc(100% - 0.6em);
  background: linear-gradient(180deg, var(--accent), transparent);
  opacity: 0.3;
}

#about ul li:last-child::after {
  display: none;
}

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 999px;
  border: 2px solid var(--bg-primary);
}

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

@media (max-width: 960px) {
  header[role="banner"] {
    gap: 0.75rem;
  }

  header nav[aria-label="主导航"] ul {
    gap: 0.15rem 0.25rem;
  }

  header nav[aria-label="主导航"] a {
    padding: 0.4rem 0.65rem;
    font-size: 0.82rem;
  }

  header form[role="search"] input[type="search"] {
    width: 140px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 170px;
  }
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 120px;
  }

  header[role="banner"] {
    padding: 0.65rem 1rem;
    gap: 0.6rem;
  }

  .brand-bar p:last-of-type {
    display: none;
  }

  header nav[aria-label="主导航"] {
    order: 3;
    flex-basis: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 0.25rem;
  }

  header nav[aria-label="主导航"]::-webkit-scrollbar {
    display: none;
  }

  header nav[aria-label="主导航"] ul {
    flex-wrap: nowrap;
    width: max-content;
  }

  header nav[aria-label="主导航"] a {
    white-space: nowrap;
  }

  header form[role="search"] {
    margin-left: auto;
  }

  header form[role="search"] input[type="search"] {
    width: 120px;
    font-size: 0.82rem;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 150px;
  }

  header form[role="search"] button[type="submit"] {
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
  }

  main {
    padding: 1.25rem 0.85rem 3rem;
  }

  main > section {
    padding: 1.25rem 1rem;
    border-radius: var(--radius-md);
  }

  main > section > article {
    padding: 1rem 1.1rem;
  }

  h2::after {
    width: 40px;
  }

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

  footer[role="contentinfo"] {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 0.85rem 1.5rem;
  }

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

  blockquote {
    padding: 1rem 1rem 1rem 2rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  header form[role="search"] input[type="search"] {
    width: 100px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 120px;
  }

  #hero svg {
    height: 160px;
  }

  #sitemap a,
  #links a {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
  }

  #howto ol li {
    padding-left: 2.9rem;
  }
}

@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;
  }

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

@media print {
  header[role="banner"],
  footer[role="contentinfo"] nav,
  body > a[href="#main-content"] {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

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

  a {
    color: #000;
    text-decoration: underline;
  }
}