/* ========================================
   黑料网_最新黑料导航 - 内容安全与删除申诉优先站
   全局样式表 - 信任中心风格
   ======================================== */

:root {
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-primary-light: #38bdf8;
  --color-accent: #06b6d4;
  --color-accent-gold: #f59e0b;
  --color-bg-dark: #0b1120;
  --color-bg-card: #111827;
  --color-bg-card-hover: #1e293b;
  --color-bg-section: #0f172a;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #1e293b;
  --color-border-light: #334155;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.15);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --container-max: 1200px;
}

/* 重置与基础 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ========== 头部导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.site-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

/* 桌面导航 */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-desktop a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-primary-light);
  border-bottom-color: var(--color-primary);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  margin: 5px 0;
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端导航面板 */
.nav-mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-dark);
  padding: var(--space-xl);
  z-index: 999;
  overflow-y: auto;
}

.nav-mobile.open {
  display: block;
  animation: slideDown 0.3s ease;
}

.nav-mobile a {
  display: block;
  padding: var(--space-md) 0;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.nav-mobile a:hover {
  color: var(--color-primary-light);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 首屏英雄区 ========== */
.hero-section {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #0f172a 50%, #1e1b4b 100%);
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../img/hero-banner.webp') center/cover no-repeat;
  opacity: 0.15;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}

.hero-content .subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary-light);
}

/* ========== 卡片网格 ========== */
.section {
  padding: var(--space-3xl) 0;
}

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

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.section-desc {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(14, 165, 233, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-primary-light);
  font-weight: 500;
}

/* ========== 流程步骤 ========== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
  counter-reset: step;
}

.step-item {
  position: relative;
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  counter-increment: step;
}

.step-item::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto var(--space-md);
}

.step-item h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.step-item p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
}

/* ========== 统计数据 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  text-align: center;
}

.stat-item {
  padding: var(--space-xl);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary-light);
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
  background: var(--color-bg-card);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-primary);
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-bg-card-hover);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-primary-light);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-answer {
  display: none;
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: var(--space-md) 0;
  margin-top: 64px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

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

.breadcrumb-list a:hover {
  color: var(--color-primary-light);
}

.breadcrumb-list span.separator {
  color: var(--color-text-muted);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.8;
  margin-top: var(--space-md);
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.footer-col a {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.footer-col a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ========== 搜索框 ========== */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-box input {
  width: 100%;
  padding: 14px 50px 14px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-box button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
  display: none;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.search-suggestions.active {
  display: block;
}

.search-suggestions a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.search-suggestions a:last-child {
  border-bottom: none;
}

.search-suggestions a:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-primary-light);
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  z-index: 900;
  transition: all var(--transition-fast);
}

.back-to-top.visible {
  display: flex;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ========== PWA安装提示 ========== */
.pwa-prompt {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 400px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  display: none;
  animation: slideUp 0.3s ease;
}

.pwa-prompt.show {
  display: block;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.pwa-prompt h4 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.pwa-prompt p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.pwa-prompt-actions {
  display: flex;
  gap: var(--space-sm);
}

.pwa-prompt .btn-sm {
  padding: 8px 16px;
  font-size: 0.82rem;
  border-radius: var(--radius-full);
}

/* ========== 表单 ========== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* 提交成功提示 */
.toast {
  position: fixed;
  top: 80px;
  right: 20px;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-success);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  z-index: 2000;
  display: none;
  animation: slideIn 0.3s ease;
}

.toast.show {
  display: block;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========== 时间线 ========== */
.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border-light);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg-dark);
}

.timeline-date {
  font-size: 0.8rem;
  color: var(--color-primary-light);
  margin-bottom: var(--space-xs);
}

/* ========== 标签 ========== */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary-light);
  border: 1px solid rgba(14, 165, 233, 0.2);
}

.tag-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.2);
}

.tag-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
  border-color: rgba(245, 158, 11, 0.2);
}

/* ========== 内容页面 ========== */
.page-header {
  padding: 100px 0 40px;
  background: linear-gradient(180deg, var(--color-bg-section), var(--color-bg-dark));
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.page-header p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 700px;
}

.page-content {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.page-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: var(--space-2xl) 0 var(--space-md);
  color: var(--color-text-primary);
}

.page-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--color-text-primary);
}

.page-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.page-content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.page-content ul li {
  position: relative;
  padding-left: var(--space-md);
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.page-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ========== 榜单切换 ========== */
.tab-nav {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.tab-btn {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ========== 合规提醒条 ========== */
.compliance-notice {
  background: rgba(14, 165, 233, 0.05);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
}

.compliance-notice p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.compliance-notice a {
  color: var(--color-primary-light);
  font-weight: 500;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

  .hero-content .subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .page-header h1 {
    font-size: 1.6rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .pwa-prompt {
    left: 10px;
    right: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

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

  .stat-number {
    font-size: 2rem;
  }
}