/* ============================================
   优启通官网 - 现代双主题CSS
   浅色主题：橙色强调 | 暗色主题：荧光绿强调
   ============================================ */

/* === CSS Reset === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
}

ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; }
a { text-decoration: none; color: inherit; }
table { border-collapse: collapse; border-spacing: 0; }

/* === CSS Variables - Light Theme (default) === */
:root, [data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-card: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-primary: #f97316;
  --color-primary-hover: #ea580c;
  --color-primary-light: #fff7ed;
  --color-primary-rgb: 249, 115, 22;
  --color-border: #e5e7eb;
  --color-header-bg: rgba(255,255,255,0.85);
  --color-header-text: #1a1a2e;
  --color-footer-bg: #f0f4f8;
  --color-footer-text: #6b7280;
  --color-footer-link: #374151;
  --color-hero-start: #4a9eed;
  --color-hero-end: #1a6fc4;
  --color-code-bg: #f3f4f6;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 20px 40px rgba(0,0,0,0.1);
  --shadow-header: 0 1px 3px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition-color: 0.3s ease;
  --transition-fast: 0.2s ease;
}

/* === Dark Theme === */
[data-theme="dark"] {
  --color-bg: #0a0a0f;
  --color-bg-secondary: #111827;
  --color-bg-card: #1a1a2e;
  --color-text: #e5e7eb;
  --color-text-secondary: #9ca3af;
  --color-primary: #22c55e;
  --color-primary-hover: #16a34a;
  --color-primary-light: #052e16;
  --color-primary-rgb: 34, 197, 94;
  --color-border: #374151;
  --color-header-bg: rgba(10,10,15,0.85);
  --color-header-text: #e5e7eb;
  --color-footer-bg: #050505;
  --color-footer-text: #6b7280;
  --color-footer-link: #9ca3af;
  --color-hero-start: #0a0a0f;
  --color-hero-end: #1a1a2e;
  --color-code-bg: #1e293b;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-card-hover: 0 20px 40px rgba(0,0,0,0.4);
  --shadow-header: 0 1px 3px rgba(0,0,0,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
}

/* === Global Styles === */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-color), color var(--transition-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

::selection {
  background: rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-text);
}

/* === Container === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === Header / Navigation === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
  transition: background-color var(--transition-color), border-color var(--transition-color);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-header-text);
  transition: color var(--transition-color);
  flex-shrink: 0;
}
.site-logo:hover { color: var(--color-primary); }

.site-logo svg {
  width: 32px;
  height: 32px;
  fill: var(--color-primary);
  transition: fill var(--transition-color);
}

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

[data-theme="dark"] .site-logo img {
  filter: brightness(1.2) contrast(1.1);
}

.logo-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.logo-icon-img {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  object-fit: contain;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-header-text);
  letter-spacing: 2px;
}

.logo-domain {
  font-size: 0.78rem;
  color: #1261AD;
  font-weight: 400;
  letter-spacing: 0.5px;
}

[data-theme="dark"] .logo-domain {
  color: #5eaeff;
}

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

.nav-menu a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 1.15rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav-menu a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.nav-menu a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-bg-card);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text);
}
.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: rotate(15deg);
}
.theme-toggle svg { width: 20px; height: 20px; }

[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  cursor: pointer;
  color: var(--color-text);
  transition: all var(--transition-fast);
}
.menu-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.menu-toggle svg { width: 24px; height: 24px; }
.menu-toggle .icon-close { display: none; }
.menu-toggle.active .icon-menu { display: none; }
.menu-toggle.active .icon-close { display: block; }

/* === Hero Section === */
.hero {
  background: linear-gradient(135deg, var(--color-hero-start) 0%, var(--color-hero-end) 100%);
  padding: 80px 20px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(var(--color-primary-rgb), 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(var(--color-primary-rgb), 0.1) 0%, transparent 40%);
  animation: heroFloat 20s ease-in-out infinite;
}
@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-2%, -2%); }
}

.hero-split {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-left {
  flex: 1;
  text-align: left;
}

.hero-right {
  flex: 0 0 420px;
}

.hero-screenshot {
  position: relative;
  border-radius: 16px;
  overflow: visible;
  transform: perspective(1200px) rotateY(-8deg) rotateX(3deg);
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  animation: heroFloat3D 6s ease-in-out infinite;
}

.hero-screenshot:hover {
  transform: perspective(1200px) rotateY(0deg) rotateX(0deg) scale(1.02);
}

@keyframes heroFloat3D {
  0%, 100% { transform: perspective(1200px) rotateY(-8deg) rotateX(3deg) translateY(0); }
  50% { transform: perspective(1200px) rotateY(-8deg) rotateX(3deg) translateY(-10px); }
}

.hero-screenshot:hover {
  animation: none;
}

.hero-screenshot-inner {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 
    0 25px 60px rgba(0,0,0,0.4),
    0 0 0 1px rgba(255,255,255,0.1),
    inset 0 1px 0 rgba(255,255,255,0.15);
}

.hero-screenshot-inner img {
  width: 100%;
  height: auto;
  display: block;
}

/* 底部渐变融入 */
.hero-screenshot-inner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 35%;
  background: linear-gradient(to top, var(--color-hero-end) 0%, transparent 100%);
  pointer-events: none;
}

/* 顶部光泽反射 */
.hero-screenshot-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.12) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

/* 底部倒影 */
.hero-screenshot-reflect {
  margin-top: 8px;
  border-radius: 16px;
  overflow: hidden;
  height: 60px;
  opacity: 0.15;
  transform: scaleY(-1);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, transparent 100%);
}

.hero-screenshot-reflect img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 1024px) {
  .hero-split {
    flex-direction: column;
    text-align: center;
  }
  .hero-left {
    text-align: center;
  }
  .hero-right {
    flex: none;
    width: 80%;
    max-width: 400px;
  }
  .hero-screenshot {
    transform: none;
  }
}

@media (max-width: 768px) {
  .hero-right {
    width: 90%;
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-shadow:
    0 1px 0 #ccc,
    0 2px 0 #bbb,
    0 3px 0 #999,
    0 4px 0 #888,
    0 5px 8px rgba(0,0,0,0.4),
    0 8px 20px rgba(0,0,0,0.3);
}

.hero .hero-slogan {
  font-style: normal;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5), 0 0 20px rgba(255,255,255,0.15);
}

.hero .hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
  line-height: 1.6;
}

.hero .hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
  letter-spacing: 1px;
}

.hero .hero-version {
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  letter-spacing: 1px;
  background: rgba(255,255,255,0.1);
  display: inline-block;
  padding: 8px 20px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
}

.hero-mirrors {
  margin-top: 20px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  flex-wrap: wrap;
}

.hero-mirrors a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  transition: all 0.2s;
  font-size: 0.8rem;
}

.hero-mirrors a:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.1);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--color-primary-rgb), 0.35);
}
.btn-primary svg { width: 20px; height: 20px; fill: currentColor; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: #ffffff;
  border: 2px solid rgba(255,255,255,0.3);
  borrder-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #ffffff;
}

/* === Feature Cards (Homepage) === */
.features-section {
  padding: 60px 20px;
  background: var(--color-bg-secondary);
  transition: background-color var(--transition-color);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-card);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius);
  transition: background-color var(--transition-color);
}
.feature-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--color-primary);
  transition: fill var(--transition-color);
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* === Content Sections (Homepage) === */
.content-section {
  padding: 60px 20px;
  transition: background-color var(--transition-color);
}

.content-section.alt-bg {
  background: var(--color-bg-secondary);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-header h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 24px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-header .more-link {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}
.section-header .more-link:hover {
  color: var(--color-primary);
}

/* Article Cards Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.article-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.article-card .card-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--color-bg-secondary);
}

.article-card .card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-title:hover {
  color: var(--color-primary);
}

.article-card .card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 1;
}

.article-card .card-meta {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-card .card-meta svg {
  width: 14px;
  height: 14px;
  fill: var(--color-text-secondary);
}

/* Article List (compact, for homepage sections) */
.article-list {
  max-width: 1200px;
  margin: 0 auto;
}

.article-list-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition-color);
}
.article-list-item:last-child { border-bottom: none; }

.article-list-item a {
  flex: 1;
  color: var(--color-text);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-list-item a:hover { color: var(--color-primary); }

.article-list-item .date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-left: 16px;
  white-space: nowrap;
}

/* Two-column layout for homepage article sections */
.two-col-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.col-section {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-color);
}

.col-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.col-section-title h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.col-section-title h3::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* === Page Layout (List + Detail pages) === */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px;
}

.page-main { min-width: 0; }

/* Breadcrumb */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb a {
  color: var(--color-text-secondary);
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .separator { color: var(--color-border); }

/* === Article List Page === */
.list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.list-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: row;
}
.list-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.list-card .card-thumb {
  width: 120px;
  height: 90px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-bg-secondary);
  border-radius: 8px;
  margin: 16px 0 16px 16px;
}

.list-card .card-body {
  padding: 16px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.list-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.list-card .card-title:hover { color: var(--color-primary); }

.list-card .card-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.list-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}

.list-card .card-date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  display: flex;
  align-ites: center;
  gap: 4px;
}
.list-card .card-date svg { width: 14px; height: 14px; fill: var(--color-text-secondary); }

.list-card .card-read-more {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}
.list-card .card-read-more svg { width: 14px; height: 14px; fill: var(--color-primary); }

/* === Pagination === */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-bg-card);
  transition: all var(--transition-fast);
}

.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.pagination .active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  font-weight: 600;
}

.pagination .page-info {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  border: none;
  background: none;
  min-width: auto;
}

.pagination select {
  height: 40px;
  padding: 0 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-size: 0.875rem;
  cursor: pointer;
}

/* === Article Detail Page === */
.article-header {
  margin-bottom: 32px;
}

.article-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-meta svg { width: 16px; height: 16px; fill: var(--color-text-secondary); }

/* Article Content */
.article-content {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-color);
  color: var(--color-text);
}

/* 暗色模式强制覆盖文章内联颜色 */
[data-theme="dark"] .article-content *[style*="color"],
[data-theme="dark"] .article-content font[color],
[data-theme="dark"] .soft_content *[style*="color"],
[data-theme="dark"] .soft_content font[color] {
  color: var(--color-text) !important;
}

[data-theme="dark"] .article-content a,
[data-theme="dark"] .soft_content a {
  color: var(--color-primary) !important;
}

[data-theme="dark"] .article-content a:hover,
[data-theme="dark"] .soft_content a:hover {
  color: var(--color-primary-hover) !important;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--color-text);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
  line-height: 1.4;
}
.article-content h1 { font-size: 1.75rem; }
.article-content h2 { font-size: 1.5rem; }
.article-content h3 { font-size: 1.25rem; }

.article-content p {
  margin-bottom: 1.2em;
  line-height: 1.8;
  color: var(--color-text);
}

.article-content img {
  border-radius: var(--radius-sm);
  margin: 16px 0;
  box-shadow: var(--shadow-card);
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--color-primary-hover); }

.article-content ul,
.article-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.2em;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.4em; line-height: 1.8; }

.article-content pre {
  background: var(--color-code-bg);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 1.2em;
  font-size: 0.9rem;
}

.article-content code {
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}
.article-content pre code { background: none; padding: 0; }

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 12px 20px;
  margin: 16px 0;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text);
}

/* Article Tables */
.article-content table {
  width: 100%;
  margin: 16px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-content th,
.article-content td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.article-content th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text);
}

.article-content tr:nth-child(even) {
  background: var(--color-bg-secondary);
}

.article-content tr:last-child td { border-bottom: none; }

/* Prev/Next Navigation */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.article-nav-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-card);
}
.article-nav-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.article-nav-item .nav-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.article-nav-item .nav-label svg { width: 14px; height: 14px; fill: var(--color-text-secondary); }

.article-nav-item .nav-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-nav-item:hover .nav-title { color: var(--color-primary); }

.article-nav-item.next { text-align: right; }
.article-nav-item.next .nav-label { justify-content: flex-end; }

/* Related Articles */
.related-section {
  margin-top: 32px;
}

.related-section h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.related-section h3::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 2px;
}

.related-list {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow-card);
}

.related-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.related-list li:last-child { border-bottom: none; }

.related-list a {
  color: var(--color-text);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-list a:hover { color: var(--color-primary); }

/* === Software Download Detail === */
.soft-detail {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.soft-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-border);
}

.soft-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

.soft-info-box {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.soft-thumb {
  width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--color-bg-secondary);
  flex-shrink: 0;
}

.soft-meta-table {
  flex: 1;
}

.soft-meta-table table {
  width: 100%;
}

.soft-meta-table td {
  padding: 6px 16px 6px 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.soft-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 28px;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.soft-download-btn:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--color-primary-rgb), 0.35);
}
.soft-download-btn svg { width: 20px; height: 20px; fill: currentColor; }

.soft-content {
  padding: 32px;
}

.soft-content-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* === Sidebar === */
.sidebar { min-width: 0; }

.sidebar-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-color);
}

.sidebar-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-card-title .more-link {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-weight: 400;
}
.sidebar-card-title .more-link:hover { color: var(--color-primary); }

/* Search box in sidebar */
.search-box {
  display: flex;
  gap: 0;
}

.search-box input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast);
}
.search-box input:focus { border-color: var(--color-primary); }
.search-box input::placeholder { color: var(--color-text-secondary); }

.search-box button {
  padding: 10px 18px;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}
.search-box button:hover { background: var(--color-primary-hover); }
.search-box button svg { width: 18px; height: 18px; fill: #ffffff; }

/* Sidebar list */
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}
.sidebar-list li:last-child { border-bottom: none; }

.sidebar-list a {
  font-size: 0.875rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}
.sidebar-list a:hover { color: var(--color-primary); }

/* Sidebar tabs */
.sidebar-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--color-border);
}

.sidebar-tab {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.sidebar-tab:hover { color: var(--color-primary); }
.sidebar-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.sidebar-tab-content { display: none; }
.sidebar-tab-content.active { display: block; }

/* Sidebar download items */
.sidebar-download-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.sidebar-download-item:last-child { border-bottom: none; }

.sidebar-download-item img {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--color-bg-secondary);
}

.sidebar-download-item .info {
  flex: 1;
  min-width: 0;
}

.sidebar-download-item .info .title {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}
.sidebar-download-item .info .title:hover { color: var(--color-primary); }

.sidebar-download-item .info .size {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* === Footer === */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 48px 20px 24px;
  margin-top: 60px;
  transition: background-color var(--transition-color);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-section p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-footer-text);
}

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

.footer-section a {
  color: var(--color-footer-link);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}
.footer-section a:hover { color: var(--color-primary); }

.footer-trust {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.footer-trust a {
  display: inline-block;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.footer-trust a:hover {
  opacity: 1;
}

.footer-trust img {
  height: 40px;
  width: auto;
}

.baidu-trust-badge {
  display: inline-flex;
  align-items: center;
}

[data-theme="dark"] .footer-trust img {
  filter: brightness(1.2) contrast(1.1);
}

.footer-bottom {
  text-align: center;
  padding-top: 16px;
  font-size: 0.8rem;
  color: var(--color-footer-text);
}

.footer-bottom a {
  color: var(--color-footer-link);
  margin: 0 4px;
}
.footer-bottom a:hover { color: var(--color-primary); }

/* === Search Page === */
.search-page {
  min-height: 60vh;
}

.search-page .search-box-large {
  display: flex;
  gap: 0;
  max-width: 600px;
  margin: 0 auto 32px;
}

.search-page .search-box-large input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transition-fast);
}
.search-page .search-box-large input:focus { border-color: var(--color-primary); }

.search-page .search-box-large button {
  padding: 14px 28px;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}
.search-page .search-box-large button:hover { background: var(--color-primary-hover); }

.search-result-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}
.search-result-item:last-child { border-bottom: none; }

.search-result-item .result-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.search-result-item .result-title:hover { color: var(--color-primary-hover); }

.search-result-item .result-section {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
  font-weight: 500;
}

.search-result-item .result-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* === Friend Links === */
.friend-links {
  max-width: 1200px;
  margin: 32px auto;
  padding: 0 20px;
}

.friend-links h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.friend-links a {
  display: inline-block;
  margin-right: 16px;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}
.friend-links a:hover { color: var(--color-primary); }

/* === Responsive === */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col-grid { grid-template-columns: 1fr; }
  .page-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .list-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero { padding: 60px 20px; }
  .hero h1 { font-size: 2rem; }
  .hero .hero-subtitle { font-size: 1rem; }

  .header-inner {
    flex-wrap: wrap;
  }
  .nav-menu {
    display: none !important;
    width: 100%;
    order: 3;
    flex-direction: column;
    padding: 10px 0;
    gap: 2px;
    background: #ffffff;
    border-top: 1px solid #e0e0e0;
  }
  .nav-menu.open { display: flex !important; }
  [data-theme="dark"] .nav-menu { background: #1a1a2e; border-top-color: #333; }
  .nav-menu a {
    padding: 14px 16px;
    font-size: 1rem;
  }

  .menu-toggle { display: flex; }

  .features-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  .article-header h1 { font-size: 1.5rem; }
  .article-content { padding: 20px; }
  .article-nav { grid-template-columns: 1fr; }

  .list-card { flex-direction: column; }
  .list-card .card-thumb { width: 100%; height: 140px; margin: 0; border-radius: 8px 8px 0 0; }

  .soft-info-box { flex-direction: column; }
  .soft-thumb { width: 100%; height: auto; }

  .hero-buttons { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; max-width: 300px; justify-content: center; }

  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; }

  .sidebar-download-item img { width: 64px; height: 48px; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 12px; }
  .container { padding: 0 12px; }
  .hero h1 { font-size: 1.6rem; }
  .feature-card { padding: 24px 16px; }
  .article-content { padding: 16px; }
  .soft-header { padding: 16px; }
  .soft-content { padding: 16px; }
}

/* === Utility === */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }