/* Light Theme - OS Performance Blog */

:root {
  --color-bg-primary: #f5f6f8;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f3f4f6;
  --color-border: #e2e5ea;
  --color-border-muted: #eef0f3;

  --color-text-primary: #1e2229;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;

  --color-accent-blue: #2563eb;
  --color-accent-blue-hover: #1d4ed8;
  --color-accent-green: #059669;
  --color-accent-teal: #0d9488;
  --color-accent-orange: #d97706;
  --color-accent-purple: #7c3aed;
  --color-accent-red: #dc2626;
  --color-accent-yellow: #ca8a04;

  --color-btn-primary-bg: #2563eb;
  --color-btn-primary-hover: #1d4ed8;
  --color-btn-secondary-bg: #ffffff;
  --color-btn-secondary-hover: #f3f4f6;

  --section-blue: #2563eb;
  --section-teal: #0d9488;
  --section-purple: #7c3aed;
  --section-orange: #d97706;
  --section-green: #059669;
  --section-gray: #6b7280;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'PingFang SC', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

/* Links */
a {
  color: var(--color-accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 0.8rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.3rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-title:hover {
  text-decoration: none;
  opacity: 0.85;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.site-nav a:hover {
  color: var(--color-accent-blue);
  border-bottom-color: var(--color-accent-blue);
  text-decoration: none;
}

/* Main Content */
.page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  min-height: calc(100vh - 200px);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.5rem; }
h2 { font-size: 2rem; border-bottom: 1px solid var(--color-border-muted); padding-bottom: 0.3rem; }
h3 { font-size: 1.5rem; }

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

/* Lists */
ul, ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Code */
code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  background-color: var(--color-bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
  font-size: 0.875rem;
  color: #e11d48;
}

pre {
  background-color: #1e2229;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

pre code {
  background-color: transparent;
  padding: 0;
  color: #e2e5ea;
  font-size: 0.875rem;
  line-height: 1.6;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-bg-tertiary);
  font-weight: 600;
  color: var(--color-text-primary);
}

tr:hover {
  background-color: var(--color-bg-tertiary);
}

/* ============ HOMEPAGE STYLES ============ */

/* Feature Banner */
.hp-feature {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  border-radius: 10px;
  margin-bottom: 1.5rem;
  padding: 0;
  overflow: hidden;
}

.hp-feature-content {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.5rem 2rem;
}

.hp-feature-icon {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.hp-feature-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #f1f5f9;
  border: none;
  margin: 0 0 0.3rem 0;
  padding: 0;
}

.hp-feature-desc {
  font-size: 0.88rem;
  color: #94a3b8;
  margin: 0 0 0.6rem 0;
}

.hp-feature-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hp-feature-links a {
  font-size: 0.82rem;
  color: #60a5fa;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: all 0.2s;
}

.hp-feature-links a:hover {
  color: #93c5fd;
  border-bottom-color: #60a5fa;
  text-decoration: none;
}

.hp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.hp-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hp-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.2rem;
  border-bottom: 1px solid var(--color-border-muted);
}

.hp-card-header .hp-icon {
  font-size: 1rem;
  line-height: 1;
}

.hp-card-header .hp-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
  flex: 1;
}

.hp-card-header .hp-more {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.hp-card-header .hp-more:hover {
  color: var(--color-accent-blue);
  text-decoration: none;
}

/* Colored top borders */
.hp-card-header.hp-cpu { border-top: 3px solid #2563eb; }
.hp-card-header.hp-app { border-top: 3px solid #0d9488; }
.hp-card-header.hp-community { border-top: 3px solid #7c3aed; }
.hp-card-header.hp-oe { border-top: 3px solid #059669; }
.hp-card-header.hp-paper { border-top: 3px solid #d97706; }
.hp-card-header.hp-ai { border-top: 3px solid #dc2626; }

.hp-list {
  list-style: none;
  margin: 0;
  padding: 0.3rem 0;
  flex: 1;
}

.hp-list li {
  margin: 0;
  padding: 0.4rem 1.2rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.hp-list a {
  font-size: 0.88rem;
  color: var(--color-text-primary);
  flex: 1;
}

.hp-list a:hover {
  color: var(--color-accent-blue);
}

.hp-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  text-align: right;
  min-width: 3rem;
}

.hp-dim {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  margin-left: 0.3rem;
}

/* Footer area */
.hp-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.hp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.hp-community {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.hp-community a {
  color: var(--color-text-secondary);
}

.hp-community a:hover {
  color: var(--color-accent-blue);
}

/* ============ KERNEL PERF PAGE STYLES ============ */

/* Banner */
.kp-banner {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  border-radius: 10px;
  padding: 2rem 2rem 1.5rem;
  margin-bottom: 1.5rem;
}
.kp-banner-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #f1f5f9;
  border: none;
  margin: 0 0 0.3rem 0;
  padding: 0;
}
.kp-banner-desc {
  font-size: 0.95rem;
  color: #94a3b8;
  margin: 0 0 1rem 0;
}
.kp-banner-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.kp-banner-nav a {
  padding: 0.3rem 0.85rem;
  border: 1px solid #475569;
  border-radius: 6px;
  font-size: 0.82rem;
  color: #cbd5e1;
  transition: all 0.2s;
}
.kp-banner-nav a:hover {
  background: rgba(255,255,255,0.1);
  border-color: #94a3b8;
  color: #f1f5f9;
  text-decoration: none;
}

/* Card Grid */
.kp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.kp-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
}

.kp-card-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--color-border-muted);
}

.kp-card-head.kp-blue { border-top: 3px solid #2563eb; }
.kp-card-head.kp-green { border-top: 3px solid #059669; }
.kp-card-head.kp-orange { border-top: 3px solid #d97706; }
.kp-card-head.kp-teal { border-top: 3px solid #0d9488; }
.kp-card-head.kp-purple { border-top: 3px solid #7c3aed; }
.kp-card-head.kp-red { border-top: 3px solid #dc2626; }
.kp-card-head.kp-yellow { border-top: 3px solid #ca8a04; }
.kp-card-head.kp-pink { border-top: 3px solid #db2777; }

.kp-card-icon {
  font-size: 1rem;
  line-height: 1;
}

.kp-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
  flex: 1;
}

.kp-card-more {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}
.kp-card-more:hover {
  color: var(--color-accent-blue);
  text-decoration: none;
}

.kp-card-list {
  list-style: none;
  margin: 0;
  padding: 0.3rem 0;
  flex: 1;
}

.kp-card-list li {
  margin: 0;
  padding: 0.35rem 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.kp-card-list a {
  font-size: 0.85rem;
  color: var(--color-text-primary);
  flex: 1;
}

.kp-card-list a:hover {
  color: var(--color-accent-blue);
}

/* Tags */
.kp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* Sub-page breadcrumb */
.kp-breadcrumb {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 0.8rem;
}

/* Sub-page head */
.kp-page-head {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 1.5rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 1.2rem;
}

.kp-page-head.kp-blue { border-left: 4px solid #2563eb; }
.kp-page-head.kp-green { border-left: 4px solid #059669; }
.kp-page-head.kp-orange { border-left: 4px solid #d97706; }
.kp-page-head.kp-teal { border-left: 4px solid #0d9488; }
.kp-page-head.kp-purple { border-left: 4px solid #7c3aed; }
.kp-page-head.kp-red { border-left: 4px solid #dc2626; }

.kp-page-icon {
  font-size: 2rem;
  line-height: 1;
}

.kp-page-title {
  font-size: 1.3rem;
  font-weight: 600;
  border: none;
  margin: 0 0 0.2rem 0;
  padding: 0;
}

.kp-page-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Article list */
.kp-article-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.kp-article {
  display: block;
  padding: 0.9rem 1.2rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: all 0.2s;
}

.kp-article:hover {
  border-color: var(--color-accent-blue);
  box-shadow: 0 1px 6px rgba(37,99,235,0.08);
  text-decoration: none;
}

.kp-article-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.kp-article-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.kp-article-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  display: block;
  margin-top: 0.2rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hp-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .kp-nav {
    gap: 0.4rem;
  }
  .kp-nav-item {
    font-size: 0.8rem;
    padding: 0.25rem 0.7rem;
  }
  .cpu-grid {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-btn-primary-bg);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-btn-primary-hover);
  text-decoration: none;
}

.btn-secondary {
  background-color: var(--color-btn-secondary-bg);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-btn-secondary-hover);
  text-decoration: none;
}

/* AI Disclaimer */
.ai-disclaimer {
  background-color: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.ai-disclaimer strong {
  color: #92400e;
  display: block;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.ai-disclaimer p {
  color: #78716c;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 4rem;
}

.site-footer .wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.site-footer p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}

/* Search */
.search-container {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  max-width: 600px;
}

.search-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-size: 1rem;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-results {
  margin-top: 2rem;
}

.search-result-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.search-result-item {
  padding: 1rem;
  margin-bottom: 1rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.2s;
}

.search-result-item:hover {
  border-color: var(--color-accent-blue);
}

.search-result-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent-blue);
}

.search-result-excerpt {
  margin-top: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.search-result-excerpt mark {
  background-color: #fef3c7;
  color: #92400e;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
}

/* Tags Cloud */
.tags-cloud-page {
  margin: 2rem 0;
}

/* Post List */
.post-list {
  list-style: none;
  margin-left: 0;
}

.post-list li {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

.post-list li:hover {
  border-color: var(--color-accent-blue);
}

.post-list a {
  font-size: 1.25rem;
  font-weight: 600;
}

.post-list .post-date {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.post-list .post-excerpt {
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

/* Navigation Breadcrumb */
.breadcrumb {
  display: flex;
  list-style: none;
  margin: 0 0 1.5rem 0;
  padding: 0;
  font-size: 0.875rem;
}

.breadcrumb li {
  margin: 0;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin: 0 0.5rem;
  color: var(--color-text-muted);
}

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

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

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--color-accent-blue);
  background-color: var(--color-bg-tertiary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

/* Horizontal Rule */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* ============ CPU ARCHITECTURE PAGE STYLES ============ */
.cpu-banner {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  border-radius: 10px;
  padding: 2rem 2rem 1.5rem;
  margin-bottom: 1.5rem;
}
.cpu-banner-title {
  font-size: 1.8rem; font-weight: 700; color: #f1f5f9;
  border: none; margin: 0 0 0.3rem 0; padding: 0;
}
.cpu-banner-desc {
  font-size: 0.95rem; color: #94a3b8; margin: 0 0 1rem 0;
}
.cpu-banner-nav {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.cpu-banner-nav a {
  padding: 0.3rem 0.85rem; border: 1px solid #475569; border-radius: 6px;
  font-size: 0.82rem; color: #cbd5e1; transition: all 0.2s;
}
.cpu-banner-nav a:hover {
  background: rgba(255,255,255,0.1); border-color: #94a3b8;
  color: #f1f5f9; text-decoration: none;
}

/* Section banner colors */
.cpu-banner-kernel { background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%); }
.cpu-banner-cpu    { background: linear-gradient(135deg, #1e293b 0%, #991b1b 100%); }
.cpu-banner-apps   { background: linear-gradient(135deg, #1e293b 0%, #0f766e 100%); }
.cpu-banner-ai     { background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #5b21b6 100%); }

.cpu-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}

.cpu-card {
  background: var(--color-bg-secondary); border: 1px solid var(--color-border);
  border-radius: 8px; overflow: hidden;
}
.cpu-card-head {
  display: flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1rem; border-bottom: 1px solid var(--color-border-muted);
}
.cpu-card-head .cpu-card-icon { font-size: 1rem; line-height: 1; }
.cpu-card-head .cpu-card-title { font-size: 0.9rem; font-weight: 600; color: var(--color-text-primary); }

.cpu-clr-tech1 { border-top: 3px solid #0891b2; }
.cpu-clr-tech2 { border-top: 3px solid #7c3aed; }
.cpu-clr-tech3 { border-top: 3px solid #059669; }
.cpu-clr-tech4 { border-top: 3px solid #d97706; }
.cpu-clr-tech5 { border-top: 3px solid #dc2626; }
.cpu-clr-tech6 { border-top: 3px solid #2563eb; }
.cpu-clr-tech7 { border-top: 3px solid #ca8a04; }

/* App section colors */
.cpu-clr-db { border-top: 3px solid #2563eb; }
.cpu-clr-db2 { border-top: 3px solid #1d4ed8; }
.cpu-clr-ai { border-top: 3px solid #7c3aed; }
.cpu-clr-ai2 { border-top: 3px solid #a855f7; }
.cpu-clr-bd { border-top: 3px solid #d97706; }
.cpu-clr-st { border-top: 3px solid #059669; }
.cpu-clr-st2 { border-top: 3px solid #34d399; }
.cpu-clr-hpc { border-top: 3px solid #dc2626; }
.cpu-clr-cloud { border-top: 3px solid #0891b2; }

.cpu-clr-intel { border-top: 3px solid #0071c5; }
.cpu-clr-amd { border-top: 3px solid #ed1c24; }
.cpu-clr-nvidia { border-top: 3px solid #76b900; }
.cpu-clr-kunpeng { border-top: 3px solid #ff6b35; }
.cpu-clr-hygon { border-top: 3px solid #722ed1; }
.cpu-clr-phytium { border-top: 3px solid #52c41a; }
.cpu-clr-loongson { border-top: 3px solid #faad14; }
.cpu-clr-zhaoxin { border-top: 3px solid #13c2c2; }
.cpu-clr-graviton { border-top: 3px solid #ff9900; }
.cpu-clr-ampere { border-top: 3px solid #0091bd; }
.cpu-clr-arm-agi { border-top: 3px solid #2e7d32; }

.cpu-card-body { padding: 0.8rem 1rem; }
.cpu-card-body p { font-size: 0.82rem; color: var(--color-text-secondary); margin: 0 0 0.6rem 0; line-height: 1.5; }
.cpu-card-links { display: flex; gap: 1rem; }
.cpu-card-links a { font-size: 0.8rem; color: var(--color-accent-blue); }
.cpu-card-links a:hover { text-decoration: underline; }

.cpu-spec-entry { margin-top: 1.5rem; }
.cpu-spec-link {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 1rem 1.2rem; background: var(--color-bg-secondary);
  border: 1px solid var(--color-border); border-radius: 8px; transition: all 0.2s;
}
.cpu-spec-link:hover { border-color: var(--color-accent-blue); text-decoration: none; box-shadow: 0 1px 6px rgba(37,99,235,0.08); }
.cpu-spec-icon { font-size: 1.5rem; }
.cpu-spec-text { flex: 1; }
.cpu-spec-text strong { font-size: 0.95rem; color: var(--color-text-primary); display: block; }
.cpu-spec-text span { font-size: 0.82rem; color: var(--color-text-secondary); }
.cpu-spec-arrow { font-size: 1.2rem; color: var(--color-text-muted); }

/* Responsive */
@media (max-width: 768px) {
  .page-content {
    padding: 1rem;
  }

  .site-header .wrapper {
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
  }

  .home-hero h1 {
    font-size: 2rem;
  }

  .home-hero .hero-stats {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .home-grid-2 {
    grid-template-columns: 1fr;
  }

  .home-card-grid {
    grid-template-columns: 1fr;
  }

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

  .openeuler-stats {
    flex-wrap: wrap;
  }

  .cpu-links {
    flex-direction: column;
    gap: 0.5rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}