/* ===== CSS Variables ===== */
:root {
  --color-primary: #1772F6;
  --color-primary-dark: #0E5FD8;
  --color-primary-light: #7EB8FB;
  --color-secondary: #4A9EF4;
  --color-accent: #f59e0b;

  --bg-body: #ffffff;
  --bg-card: #f8fafc;
  --bg-code: #1e1e2e;
  --bg-sidebar: #f1f5f9;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-link: #1772F6;

  --border-color: #e2e8f0;
  --border-radius: 12px;
  --border-radius-sm: 6px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --header-height: 64px;
  --max-width: 1200px;
  --content-width: 800px;

  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-sidebar: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #7EB8FB;

  --border-color: #334155;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--text-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; }

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  padding: 2rem 0;
}

.site-main {
  flex: 1;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  transition: background var(--transition);
}

[data-theme="dark"] .site-header {
  background: rgba(15,23,42,0.85);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.logo-icon { font-size: 1.5rem; }

.site-nav {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

.nav-link {
  padding: 0.4rem 0.75rem;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(23,114,246,0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  padding: 0.4rem;
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ===== Mobile Menu ===== */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem 1.5rem;
  background: var(--bg-body);
  border-top: 1px solid var(--border-color);
}
.mobile-nav-link {
  padding: 0.6rem 0;
  color: var(--text-secondary);
  font-size: 1rem;
  border-bottom: 1px solid var(--border-color);
}
.mobile-nav-link:last-child { border-bottom: none; }

/* ===== Hero Section ===== */
.home-hero {
  background: linear-gradient(135deg, #1772F620 0%, #4A9EF420 50%, #0E5FD820 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 4rem 1.5rem;
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 3rem;
}

.hero-avatar img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 4px solid var(--color-primary);
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.hero-slogan {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1.25rem;
  max-width: 500px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag {
  background: rgba(23,114,246,0.1);
  color: var(--color-primary);
  border: 1px solid rgba(23,114,246,0.3);
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 500;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

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

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

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

.btn-ssq {
  background: linear-gradient(135deg, #e53935 0%, #ff6f00 100%);
  color: white;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 10px rgba(229,57,53,0.30);
}
.btn-ssq:hover {
  background: linear-gradient(135deg, #c62828 0%, #e65100 100%);
  color: white;
  box-shadow: 0 4px 16px rgba(229,57,53,0.40);
  transform: translateY(-1px);
}

/* ── 双色球 Banner ── */
.ssq-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 1.5rem auto 0;
  padding: 1.1rem 1.8rem;
  background: linear-gradient(135deg, #c62828 0%, #ff6f00 55%, #ffd600 100%);
  border-radius: var(--border-radius);
  color: white;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(198,40,40,0.30);
  transition: transform var(--transition), box-shadow var(--transition);
}
.ssq-banner:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(198,40,40,0.40);
  color: white;
}
.ssq-banner-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.ssq-banner-icon {
  font-size: 2.2rem;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}
.ssq-banner-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.ssq-banner-desc {
  font-size: 0.8rem;
  opacity: 0.88;
  margin-top: 0.15rem;
}
.ssq-banner-btn {
  font-size: 0.9rem;
  font-weight: 700;
  background: rgba(255,255,255,0.22);
  border: 1px solid rgba(255,255,255,0.45);
  border-radius: 20px;
  padding: 0.4rem 1.1rem;
  white-space: nowrap;
  transition: background var(--transition);
}
.ssq-banner:hover .ssq-banner-btn {
  background: rgba(255,255,255,0.35);
}
@media (max-width: 540px) {
  .ssq-banner { padding: 1rem 1.2rem; gap: 0.8rem; }
  .ssq-banner-icon { font-size: 1.8rem; }
  .ssq-banner-title { font-size: 0.95rem; }
  .ssq-banner-desc { display: none; }
  .ssq-banner-btn { font-size: 0.82rem; padding: 0.35rem 0.9rem; }
}

.btn-sm { padding: 0.35rem 0.85rem; font-size: 0.8rem; }

/* ===== Home Sections ===== */
.home-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}
.home-section:last-child { border-bottom: none; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.section-header h2 { font-size: 1.5rem; font-weight: 700; }
.view-all { color: var(--text-muted); font-size: 0.9rem; }
.view-all:hover { color: var(--color-primary); }

/* ===== Post Grid ===== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.post-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.post-card-meta time { color: var(--text-muted); font-size: 0.8rem; }
.post-tag {
  background: rgba(6,182,212,0.1);
  color: var(--color-secondary);
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  font-size: 0.75rem;
}

.post-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
}
.post-card-title a { color: var(--text-primary); }
.post-card-title a:hover { color: var(--color-primary); }

.post-card-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-more {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: auto;
}

/* ===== Skills Section ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
}
.skill-group h4 { font-size: 0.9rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.75rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-tags span {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.6rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ===== Projects Section ===== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: all var(--transition);
  color: var(--text-primary);
}
.project-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.project-lang {
  display: inline-block;
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  width: fit-content;
}
.project-card h4 { font-size: 0.95rem; font-weight: 600; }
.project-card p { font-size: 0.82rem; color: var(--text-secondary); flex: 1; }
.project-stars { font-size: 0.8rem; color: var(--text-muted); }

/* ===== Post List ===== */
.post-list-main { min-width: 0; }

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}
.page-header h1 { font-size: 1.75rem; font-weight: 700; }
.page-header p { color: var(--text-muted); margin-top: 0.25rem; }

.post-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
}
.post-item:last-child { border-bottom: none; }

.post-item-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.post-item-meta time { color: var(--text-muted); font-size: 0.82rem; }
.category-badge {
  background: rgba(23,114,246,0.1);
  color: var(--color-primary);
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  font-size: 0.75rem;
}

.post-item-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; }
.post-item-title a { color: var(--text-primary); }
.post-item-title a:hover { color: var(--color-primary); }

.post-item-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 0.75rem; }

.post-item-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.post-item-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.tag-sm {
  color: var(--text-muted);
  font-size: 0.78rem;
  transition: color var(--transition);
}
.tag-sm:hover { color: var(--color-primary); }
.read-more { color: var(--color-primary); font-size: 0.85rem; font-weight: 500; }

/* ===== Single Post ===== */
.single-post { min-width: 0; }

.post-header { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border-color); }
.post-header-meta { display: flex; align-items: center; gap: 1rem; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.75rem; }
.post-title { font-size: 2rem; font-weight: 800; line-height: 1.3; margin-bottom: 0.75rem; }
.post-description { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 0.75rem; }
.post-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* Table of Contents */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}
.toc-title { font-weight: 600; margin-bottom: 0.75rem; color: var(--text-muted); font-size: 0.9rem; }
.toc nav ul { list-style: none; padding-left: 1rem; }
.toc nav > ul { padding-left: 0; }
.toc a { color: var(--text-secondary); font-size: 0.875rem; line-height: 2; }
.toc a:hover { color: var(--color-primary); }

/* Post Content */
.post-content {
  line-height: 1.8;
  font-size: 1rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-weight: 700;
  margin: 2rem 0 1rem;
  line-height: 1.3;
}
.post-content h1 { font-size: 1.75rem; }
.post-content h2 { font-size: 1.4rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
.post-content h3 { font-size: 1.15rem; }
.post-content h4 { font-size: 1rem; }

.post-content p { margin: 1rem 0; }

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

.post-content ul,
.post-content ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}
.post-content li { margin: 0.35rem 0; }

.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(23,114,246,0.05);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-content code {
  font-family: var(--font-mono);
  background: rgba(23,114,246,0.1);
  color: var(--color-primary);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}

.post-content pre {
  background: #1e1e2e;
  border-radius: var(--border-radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}
.post-content pre code {
  background: none;
  color: #cdd6f4;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  overflow-x: auto;
  display: block;
}
.post-content th,
.post-content td {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}
.post-content th {
  background: var(--bg-card);
  font-weight: 600;
}
.post-content tr:nth-child(even) td { background: rgba(0,0,0,0.02); }
[data-theme="dark"] .post-content tr:nth-child(even) td { background: rgba(255,255,255,0.02); }

.post-content img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  margin: 1rem auto;
  display: block;
}

/* Post Footer */
.post-footer { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border-color); }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}
.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  transition: all var(--transition);
}
.post-nav-link:hover { border-color: var(--color-primary); color: var(--text-primary); }
.post-nav-link.next { text-align: right; }
.post-nav-label { font-size: 0.78rem; color: var(--text-muted); }
.post-nav-title { font-size: 0.9rem; font-weight: 500; }

.post-share { text-align: center; }
.post-share p { color: var(--text-muted); margin-bottom: 1rem; }

/* ===== About Page ===== */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3rem;
  padding: 2rem 0;
}
.about-content { min-width: 0; }
.about-content h1 { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; }
.about-content h2 { font-size: 1.3rem; font-weight: 700; margin: 2rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-color); }
.about-content h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 0.75rem; }
.about-content p { margin: 0.75rem 0; color: var(--text-secondary); }
.about-content ul, .about-content ol { padding-left: 1.5rem; margin: 0.75rem 0; }
.about-content li { margin: 0.35rem 0; color: var(--text-secondary); }
.about-content table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.about-content th, .about-content td { padding: 0.5rem 0.75rem; border: 1px solid var(--border-color); }
.about-content th { background: var(--bg-card); font-weight: 600; }
.about-content a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.about-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(23,114,246,0.05);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.about-content hr { border: none; border-top: 1px solid var(--border-color); margin: 2rem 0; }
.about-content strong { color: var(--text-primary); }

.profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
  position: sticky;
  top: calc(var(--header-height) + 1rem);
}
.profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 3px solid var(--color-primary);
  margin-bottom: 1rem;
}
.profile-card h3 { font-weight: 700; margin-bottom: 0.35rem; }
.profile-bio { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.25rem; }
.profile-location { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1rem; }
.profile-links { display: flex; gap: 0.5rem; justify-content: center; }

/* ===== Sidebar ===== */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
}

.profile-widget { text-align: center; }
.sidebar-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--color-primary);
  margin-bottom: 0.75rem;
}
.sidebar-widget h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.25rem; }
.sidebar-widget p { font-size: 0.82rem; color: var(--text-secondary); }
.sidebar-location { font-size: 0.8rem; color: var(--text-muted); margin: 0.25rem 0 0.75rem; }
.sidebar-social { display: flex; gap: 0.75rem; justify-content: center; }
.sidebar-social a { color: var(--text-muted); transition: color var(--transition); }
.sidebar-social a:hover { color: var(--color-primary); }

.sidebar-widget-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.recent-posts { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.recent-posts li { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; }
.recent-posts a { font-size: 0.85rem; color: var(--text-secondary); flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.recent-posts a:hover { color: var(--color-primary); }
.recent-posts time { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag-cloud-item { color: var(--text-secondary); transition: color var(--transition); }
.tag-cloud-item:hover { color: var(--color-primary); }

.category-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.category-list li { display: flex; justify-content: space-between; align-items: center; }
.category-list a { font-size: 0.875rem; color: var(--text-secondary); }
.category-list a:hover { color: var(--color-primary); }
.count {
  background: rgba(23,114,246,0.1);
  color: var(--color-primary);
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  font-size: 0.75rem;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: start;
}

.footer-logo { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); display: block; margin-bottom: 0.5rem; }
.footer-slogan { font-size: 0.82rem; color: var(--text-muted); max-width: 300px; }

.footer-links { display: flex; gap: 3rem; }
.footer-col { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
.footer-col a { font-size: 0.875rem; color: var(--text-secondary); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  text-align: center;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--color-primary); }

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 0;
}
.page-item .page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all var(--transition);
}
.page-item.active .page-link,
.page-item .page-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .page-layout,
  .about-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .site-nav { display: none; }
  .mobile-menu-btn { display: flex; }

  .mobile-nav.open { display: flex; }

  .hero-content {
    flex-direction: column;
    text-align: center;
  }

  .hero-tags,
  .hero-links {
    justify-content: center;
  }

  .hero-title { font-size: 1.75rem; }

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

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

  .post-nav {
    grid-template-columns: 1fr;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 2rem;
  }

  .post-title { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== Selection ===== */
::selection { background: rgba(23,114,246,0.2); }

/* ===== 404 Page ===== */
.not-found-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height) - 120px);
  padding: 3rem 1.5rem;
}

.not-found-inner {
  text-align: center;
  max-width: 480px;
}

.not-found-code {
  font-size: 7rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  letter-spacing: -4px;
}

.not-found-illus {
  margin: 1rem auto 1.5rem;
}

.not-found-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.not-found-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.not-found-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.not-found-links {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.not-found-links p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.not-found-links ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.not-found-links a {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(23,114,246,0.3);
  transition: all var(--transition);
}

.not-found-links a:hover {
  background: rgba(23,114,246,0.08);
  border-color: var(--color-primary);
}

/* ===== Taxonomy Hero ===== */
.taxonomy-hero {
  background: linear-gradient(135deg, rgba(23,114,246,0.08) 0%, rgba(74,158,244,0.05) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 3.5rem 1.5rem 2.5rem;
  text-align: center;
}

.taxonomy-hero-icon {
  font-size: 2.75rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.taxonomy-hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  line-height: 1.2;
}

.taxo-term-hash {
  color: var(--color-primary);
  margin-right: 2px;
}

.taxonomy-hero-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.taxonomy-hero-desc strong {
  color: var(--color-primary);
  font-weight: 700;
}

.taxo-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(23,114,246,0.35);
  border-radius: 99px;
  transition: all var(--transition);
}

.taxo-back-link:hover {
  background: rgba(23,114,246,0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ===== Taxonomy Cloud (Tags) ===== */
.taxo-cloud-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem 1.75rem;
  margin-bottom: 2rem;
}

.taxo-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  justify-content: center;
}

.taxo-cloud-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: 99px;
  border: 1px solid transparent;
  transition: all var(--transition);
  line-height: 1.5;
}

.taxo-cloud-tag:hover {
  color: var(--color-primary);
  background: rgba(23,114,246,0.08);
  border-color: rgba(23,114,246,0.3);
}

.taxo-cloud-hash {
  color: var(--color-primary);
  opacity: 0.7;
  font-weight: 700;
}

.taxo-cloud-num {
  font-size: 0.7em;
  color: var(--text-muted);
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: 99px;
  padding: 0 0.4em;
  margin-left: 0.25rem;
  vertical-align: middle;
  transition: all var(--transition);
}

.taxo-cloud-tag:hover .taxo-cloud-num {
  background: rgba(23,114,246,0.12);
  border-color: rgba(23,114,246,0.3);
  color: var(--color-primary);
}

/* ===== Taxonomy Grid Header ===== */
.taxo-grid-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.taxo-grid-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.taxo-grid-sort {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== Taxonomy Card Grid ===== */
.taxo-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}

.taxo-card-grid--cat {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

/* Tag card */
.taxo-card--tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  overflow: hidden;
}

.taxo-card--tag:hover {
  border-color: var(--color-primary);
  background: rgba(23,114,246,0.04);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  color: var(--text-primary);
}

.taxo-card-icon {
  color: var(--color-primary);
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
  opacity: 0.8;
}

.taxo-card-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.taxo-card-badge {
  background: rgba(23,114,246,0.1);
  color: var(--color-primary);
  border-radius: 99px;
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Category card */
.taxo-card--cat {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  transition: all var(--transition);
}

.taxo-card--cat:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.taxo-card--cat:hover .taxo-card-cat-icon {
  transform: scale(1.15);
}

.taxo-card-cat-icon {
  font-size: 1.75rem;
  line-height: 1;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.taxo-card-cat-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.taxo-card--cat .taxo-card-name {
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.taxo-card--cat .taxo-card-badge {
  width: fit-content;
  font-size: 0.78rem;
}

.taxo-card-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition);
}

.taxo-card--cat:hover .taxo-card-arrow {
  color: var(--color-primary);
  transform: translateX(3px);
}

/* ===== Term Post List ===== */
.taxo-term-list .post-item:first-child {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

/* ===== Responsive Taxonomy ===== */
@media (max-width: 768px) {
  .taxonomy-hero { padding: 2.5rem 1rem 2rem; }
  .taxonomy-hero-title { font-size: 1.75rem; }
  .taxo-card-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .taxo-card-grid--cat { grid-template-columns: 1fr; }
}


/* ============================================================
   🎱 双色球 SSQ 专属样式
   ============================================================ */

/* ── 页面 Hero ── */
.ssq-page { padding-top: 2rem; padding-bottom: 3rem; }

.ssq-hero {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
  color: #fff;
}
.ssq-hero-title { font-size: 2rem; font-weight: 700; margin-bottom: 0.5rem; }
.ssq-hero-desc  { color: rgba(255,255,255,0.75); font-size: 0.95rem; }

/* ── 更新时间 ── */
.ssq-update-time {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 1.5rem;
}

/* ── Tab 切换 ── */
.ssq-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0;
}

.ssq-tab {
  padding: 0.6rem 1.2rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.ssq-tab:hover  { color: var(--color-primary); background: rgba(23,114,246,0.06); }
.ssq-tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); font-weight: 600; }

/* ── Tab 内容 ── */
.ssq-tab-content { display: none; }
.ssq-tab-content.active { display: block; }

/* ── 开奖历史表格 ── */
.ssq-history-table { overflow-x: auto; margin: 1rem 0; }
.ssq-history-table table { width: 100%; border-collapse: collapse; }
.ssq-history-table th,
.ssq-history-table td {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.9rem;
}
.ssq-history-table th { background: var(--bg-sidebar); font-weight: 600; }
.ssq-history-table tr:hover { background: rgba(23,114,246,0.04); }

/* ── 球样式 ── */
.ball-red, .ball-blue {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  margin: 1px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
  vertical-align: middle;
  line-height: 1;
}
.ball-red {
  background: radial-gradient(circle at 35% 35%, #ff6b6b, #cc0000);
  border: 1.5px solid #aa0000;
}
.ball-blue {
  background: radial-gradient(circle at 35% 35%, #4da6ff, #0055cc);
  border: 1.5px solid #003fa3;
}

/* ── 频次统计网格 ── */
.ssq-freq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
  margin: 1rem 0;
}

.freq-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all var(--transition);
}
.freq-item:hover { border-color: var(--color-primary); }
.freq-item.top1  { border-color: #f59e0b; background: rgba(245,158,11,0.08); }
.freq-item.top3  { border-color: #ef4444; background: rgba(239,68,68,0.06); }
.freq-item.top10 { border-color: #f87171; background: rgba(248,113,113,0.04); }
.freq-item.blue.top1 { border-color: #f59e0b; background: rgba(245,158,11,0.08); }
.freq-item.blue.top3 { border-color: #3b82f6; background: rgba(59,130,246,0.08); }

.freq-num {
  font-size: 0.82rem;
  font-weight: 700;
  width: 22px;
  text-align: center;
  color: var(--text-primary);
}
.freq-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}
.freq-bar {
  height: 100%;
  background: linear-gradient(90deg, #ef4444, #f87171);
  border-radius: 4px;
  transition: width 0.4s ease;
  min-width: 2px;
}
.freq-bar.blue-bar {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}
.freq-count {
  font-size: 0.78rem;
  color: var(--text-muted);
  width: 24px;
  text-align: right;
}

/* ── 冷热号展示 ── */
.ssq-hot-cold {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}
.hot-cold-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.hot-cold-item .ball-red,
.hot-cold-item .ball-blue {
  margin: 0 2px;
}
.hc-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: 130px;
}

/* ── 预测结果 ── */
.ssq-score-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  margin-bottom: 1.2rem;
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  font-size: 0.82rem;
}
.score-legend-title {
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 0.25rem;
}
.score-dim {
  padding: 0.2rem 0.55rem;
  border-radius: 99px;
  background: rgba(23,114,246,0.08);
  color: var(--color-primary);
  font-weight: 500;
  white-space: nowrap;
}

.ssq-predict-note {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  padding: 0.6rem 1rem;
  background: rgba(23,114,246,0.06);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.ssq-algo-block {
  margin-bottom: 2rem;
  padding: 1.25rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}
.ssq-algo-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}
.ssq-algo-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.ssq-pred-list { display: flex; flex-direction: column; gap: 0.6rem; }

.ssq-pred-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.6rem 0.8rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-body);
  transition: all var(--transition);
}
.ssq-pred-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow-sm); }
.ssq-pred-item.hit-prize { border-color: #f59e0b; background: rgba(245,158,11,0.06); }
.ssq-pred-item.no-prize  { opacity: 0.8; }

.pred-rank  { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); min-width: 40px; }
.pred-balls { display: flex; align-items: center; flex-wrap: wrap; gap: 2px; flex: 1; }
.pred-score { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }
.pred-result {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  font-weight: 500;
}

.ssq-disclaimer {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 1.5rem;
  padding: 0.6rem;
  background: rgba(245,158,11,0.06);
  border-radius: var(--border-radius-sm);
  border: 1px dashed #f59e0b55;
}

/* ── 准确率验证 ── */
.ssq-accuracy-header {
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--border-radius-sm);
  border-left: 4px solid var(--color-primary);
  margin-bottom: 1.5rem;
}
.ssq-accuracy-header p { margin: 0.2rem 0; font-size: 0.9rem; }

.ssq-no-data {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
  .ssq-hero-title  { font-size: 1.5rem; }
  .ssq-tabs        { gap: 0.25rem; }
  .ssq-tab         { padding: 0.5rem 0.75rem; font-size: 0.82rem; }
  .ssq-freq-grid   { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .ball-red, .ball-blue { width: 26px; height: 26px; font-size: 0.7rem; }
  .ssq-pred-item   { flex-direction: column; align-items: flex-start; }
}

/* ── 频次统计美化卡片 ── */
.ssq-freq-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin: 1rem 0 2rem;
}
.ssq-freq-cards--blue {
  grid-template-columns: repeat(5, 1fr);
}

.freq-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all var(--transition);
}
.freq-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 排名徽章样式 */
.freq-card.rank-gold   { border-color: #f59e0b; background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(245,158,11,0.04)); }
.freq-card.rank-silver { border-color: #94a3b8; background: linear-gradient(135deg, rgba(148,163,184,0.12), rgba(148,163,184,0.04)); }
.freq-card.rank-bronze { border-color: #cd7f32; background: linear-gradient(135deg, rgba(205,127,50,0.12), rgba(205,127,50,0.04)); }
.freq-card.rank-hot    { border-color: rgba(239,68,68,0.4); }
.freq-card.rank-cold   { border-color: rgba(96,165,250,0.4); opacity: 0.85; }

.freq-card--blue.rank-gold   { border-color: #f59e0b; background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(245,158,11,0.04)); }
.freq-card--blue.rank-silver { border-color: #94a3b8; background: linear-gradient(135deg, rgba(148,163,184,0.12), rgba(148,163,184,0.04)); }
.freq-card--blue.rank-bronze { border-color: #cd7f32; background: linear-gradient(135deg, rgba(205,127,50,0.12), rgba(205,127,50,0.04)); }
.freq-card--blue.rank-hot    { border-color: rgba(59,130,246,0.4); }
.freq-card--blue.rank-cold   { border-color: rgba(148,163,184,0.3); opacity: 0.85; }

.fc-rank {
  font-size: 0.78rem;
  font-weight: 700;
  min-width: 28px;
  text-align: center;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* 进度条 */
.fc-bar-wrap {
  flex: 1;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  min-width: 40px;
}
.fc-bar {
  height: 100%;
  background: linear-gradient(90deg, #dc2626, #f87171);
  border-radius: 3px;
  transition: width 0.6s ease;
  min-width: 2px;
}
.fc-bar--blue {
  background: linear-gradient(90deg, #1d4ed8, #60a5fa);
}
.rank-gold   .fc-bar { background: linear-gradient(90deg, #d97706, #fbbf24); }
.rank-silver .fc-bar { background: linear-gradient(90deg, #64748b, #94a3b8); }
.rank-bronze .fc-bar { background: linear-gradient(90deg, #92400e, #d97706); }

/* 统计数字区 */
.fc-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0;
  min-width: 52px;
  flex-shrink: 0;
}
.fc-count {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.fc-diff {
  font-size: 0.7rem;
  font-weight: 500;
  line-height: 1.2;
}
.freq-above { color: #16a34a; }
.freq-below { color: #dc2626; }

/* ── 历史列表页 ── */
.ssq-history-list { padding: 1rem 0; }

.ssq-entry-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}
.ssq-entry-list li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}
.ssq-entry-list li a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* ── 响应式补充 ── */
@media (max-width: 768px) {
  .ssq-freq-cards { grid-template-columns: repeat(2, 1fr); gap: 0.4rem; }
  .fc-bar-wrap    { min-width: 28px; }
  .ssq-entry-list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .ssq-freq-cards { grid-template-columns: repeat(2, 1fr); }
  .ssq-entry-list { grid-template-columns: 1fr; }
}

/* ── 打赏模块 ── */
.ssq-donate {
  margin-top: 2.5rem;
  padding: 1.5rem 1rem;
  text-align: center;
  background: linear-gradient(135deg, rgba(23,114,246,0.06) 0%, rgba(236,72,153,0.06) 100%);
  border: 1px dashed rgba(23,114,246,0.3);
  border-radius: var(--border-radius);
}
.donate-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}
.donate-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 1.2rem;
}
.donate-qrcodes {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.donate-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.donate-qr {
  width: 140px;
  height: 140px;
  border-radius: var(--border-radius-sm);
  border: 3px solid var(--border-color);
  object-fit: contain;
  background: #fff;
  padding: 4px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.donate-qr:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}
.donate-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}
@media (max-width: 480px) {
  .donate-qr { width: 120px; height: 120px; }
  .donate-qrcodes { gap: 1.5rem; }
}