/* ============ CSS 变量 ============ */
:root {
  --pink-50: #fff1f5;
  --pink-100: #ffe4ec;
  --pink-200: #ffb8d4;
  --pink-300: #ff8cb3;
  --pink-400: #ff6b9d;
  --pink-500: #ff4d85;
  --pink-600: #f43f73;
  --pink-700: #e02d5e;
  --pink-800: #c02648;
  --pink-900: #9f1f3b;
  --rose-300: #fda4af;
  --rose-400: #fb7185;
  --purple-400: #c084fc;
  --gradient-hero: linear-gradient(135deg, #ffb8d4 0%, #ff8cb3 25%, #fda4af 50%, #ffb8d4 75%, #e9a5c9 100%);
  --gradient-card: linear-gradient(135deg, #ffe4ec 0%, #fff1f5 50%, #ffe4ec 100%);
  --gradient-btn: linear-gradient(135deg, var(--pink-400), var(--pink-600));
  --gradient-btn-hover: linear-gradient(135deg, var(--pink-500), var(--pink-700));
  --shadow-sm: 0 2px 8px rgba(255,107,157,0.15);
  --shadow-md: 0 4px 16px rgba(255,107,157,0.2);
  --shadow-lg: 0 8px 32px rgba(255,107,157,0.25);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-main);
  background: var(--pink-50);
  color: #4a4a6a;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; font-family: inherit; transition: var(--transition); }
input, select, textarea { font-family: inherit; outline: none; transition: var(--transition); }

/* ============ 粒子画布 ============ */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ============ 鼠标跟随 ============ */
#mouseTrail {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ============ 头部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--pink-100);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 700;
  color: var(--pink-600);
}
.logo-icon { font-size: 28px; animation: bounce 2s infinite; }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.main-nav { display: flex; gap: 4px; align-items: center; }
.nav-link {
  padding: 8px 18px;
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 500;
  color: #6b6b8a;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  background: var(--pink-100);
  color: var(--pink-600);
}
.admin-link { color: var(--pink-400); opacity: 0.7; }
.admin-link:hover { opacity: 1; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.menu-toggle span {
  width: 24px; height: 2px;
  background: var(--pink-500);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ============ Hero ============ */
.hero {
  position: relative;
  z-index: 1;
  padding: 60px 20px 40px;
  text-align: center;
  background: var(--gradient-hero);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.hero-content { max-width: 700px; margin: 0 auto; }

.hero-title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 10px rgba(255,77,133,0.3);
  margin-bottom: 12px;
  animation: fadeInUp 0.8s ease;
}
.title-sparkle {
  display: inline-block;
  animation: sparkle 1.5s infinite alternate;
}
@keyframes sparkle {
  0% { transform: scale(1) rotate(0deg); }
  100% { transform: scale(1.2) rotate(10deg); }
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease 0.15s both;
}

/* 搜索框 */
.search-box {
  display: flex;
  max-width: 520px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: fadeInUp 0.8s ease 0.3s both;
}
.search-input {
  flex: 1;
  padding: 16px 24px;
  border: none;
  font-size: 16px;
  color: #4a4a6a;
  background: transparent;
}
.search-input::placeholder { color: #ccc; }
.search-btn {
  padding: 16px 32px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
}
.search-btn:hover { background: var(--gradient-btn-hover); transform: scale(1.02); }

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

/* Hero 统计 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 28px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.45s both;
}
.stat-item { text-align: center; }
.stat-number {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 2px 4px rgba(255,77,133,0.3);
}
.stat-label { font-size: 13px; color: rgba(255,255,255,0.8); }

/* ============ 广告区域 ============ */
.ad-section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 24px auto 0;
  padding: 0 20px;
}
.ad-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.ad-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 16px 10px;
  text-align: center;
  border: 2px dashed var(--pink-200);
  overflow: hidden;
  transition: var(--transition);
  min-height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.ad-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--pink-400);
}
.ad-card.has-image { border-style: solid; padding: 8px; }
.ad-card img { width: 100%; height: 60px; object-fit: cover; border-radius: var(--radius-sm); }
.ad-card .ad-label {
  font-size: 12px;
  color: var(--pink-400);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.ad-card .ad-title { font-size: 14px; color: #6b6b8a; margin-top: 2px; word-break: break-all; }

/* ============ 分类区域 ============ */
.category-section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 40px auto 0;
  padding: 0 20px;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--pink-700);
}
.section-more { font-size: 14px; color: var(--pink-500); }
.section-more:hover { color: var(--pink-700); text-decoration: underline; }

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cat-tag {
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 500;
  background: #fff;
  color: #6b6b8a;
  border: 1px solid var(--pink-200);
  transition: var(--transition);
}
.cat-tag:hover { border-color: var(--pink-400); color: var(--pink-500); }
.cat-tag.active {
  background: var(--gradient-btn);
  color: #fff;
  border-color: transparent;
}

/* ============ 网站卡片网格 ============ */
.sites-section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}
.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.site-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--pink-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.site-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.site-card:hover::before { transform: scaleX(1); }
.site-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--pink-300);
}
.site-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
}
.site-card-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.site-card-name {
  font-size: 16px;
  font-weight: 600;
  color: #4a4a6a;
  word-break: break-all;
}
.site-card-url {
  font-size: 12px;
  color: #aaa;
  word-break: break-all;
}
.site-card-desc {
  font-size: 13px;
  color: #888;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.site-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-card-cat {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: var(--radius-xl);
  background: var(--pink-100);
  color: var(--pink-600);
  font-weight: 500;
}
.site-card-clicks { font-size: 12px; color: #ccc; }

/* 加载更多 */
.load-more-wrap { text-align: center; margin-top: 32px; }
.load-more-btn {
  padding: 12px 40px;
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 600;
  background: #fff;
  color: var(--pink-500);
  border: 2px solid var(--pink-300);
}
.load-more-btn:hover {
  background: var(--pink-100);
  border-color: var(--pink-500);
  transform: translateY(-2px);
}

/* ============ CTA区域 ============ */
.cta-section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}
.cta-card {
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-card h2 { font-size: 28px; margin-bottom: 8px; text-shadow: 0 2px 8px rgba(255,77,133,0.3); }
.cta-card p { font-size: 16px; margin-bottom: 24px; opacity: 0.95; }
.cta-btn {
  display: inline-block;
  padding: 14px 40px;
  border-radius: var(--radius-xl);
  background: #fff;
  color: var(--pink-600);
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(255,255,255,0.3);
  transition: var(--transition);
}
.cta-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(255,255,255,0.4); }

/* ============ 页脚 ============ */
.site-footer {
  position: relative;
  z-index: 1;
  background: #fff;
  border-top: 1px solid var(--pink-100);
  padding: 40px 20px;
  margin-top: 40px;
}
.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}
.footer-brand .footer-logo { font-size: 18px; font-weight: 700; color: var(--pink-600); }
.footer-brand p { font-size: 13px; color: #aaa; margin-top: 4px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 14px; color: #999; }
.footer-links a:hover { color: var(--pink-500); }
.footer-copy { width: 100%; text-align: center; font-size: 12px; color: #ccc; padding-top: 16px; border-top: 1px solid var(--pink-50); }
.footer-copy a { color: var(--pink-400); }

/* ============ 回到顶部 ============ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* ============ 提交页面 ============ */
.submit-page { position: relative; z-index: 1; padding: 40px 20px; }
.submit-hero { text-align: center; margin-bottom: 32px; }
.submit-hero h1 { font-size: 32px; color: var(--pink-700); margin-bottom: 8px; }
.submit-hero p { color: #999; font-size: 15px; }
.submit-card {
  max-width: 560px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--pink-100);
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #4a4a6a;
  margin-bottom: 6px;
}
.required { color: var(--pink-500); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--pink-100);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: #4a4a6a;
  background: var(--pink-50);
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--pink-400);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255,107,157,0.1);
}
.submit-btn, .save-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--gradient-btn);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  transition: var(--transition);
}
.submit-btn:hover, .save-btn:hover { background: var(--gradient-btn-hover); transform: translateY(-2px); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.submit-success { text-align: center; padding: 24px 0; }
.success-icon { font-size: 64px; margin-bottom: 16px; animation: bounce 0.6s ease; }
.submit-success h3 { font-size: 22px; color: var(--pink-600); margin-bottom: 8px; }
.submit-success p { color: #999; margin-bottom: 20px; }
.back-home-btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius-xl);
  background: var(--pink-100);
  color: var(--pink-600);
  font-weight: 600;
}
.back-home-btn:hover { background: var(--pink-200); }

/* ============ 管理后台 ============ */
.admin-body { background: #f8f9fc; }
.admin-login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--gradient-hero);
  padding: 20px;
}
.login-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.login-header { margin-bottom: 32px; }
.login-icon { font-size: 48px; display: block; margin-bottom: 12px; }
.login-header h1 { font-size: 24px; color: var(--pink-700); margin-bottom: 4px; }
.login-header p { color: #aaa; font-size: 14px; }
.login-form { text-align: left; }
.login-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--gradient-btn);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
}
.login-btn:hover { background: var(--gradient-btn-hover); }
.back-link { display: inline-block; margin-top: 16px; font-size: 13px; color: #aaa; }
.back-link:hover { color: var(--pink-500); }

/* 面板布局 */
.admin-panel { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 240px;
  background: #fff;
  border-right: 1px solid var(--pink-100);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar-brand {
  padding: 24px 20px;
  font-size: 18px;
  font-weight: 700;
  color: var(--pink-600);
  border-bottom: 1px solid var(--pink-50);
}
.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-link {
  display: block;
  width: 100%;
  padding: 12px 16px;
  text-align: left;
  background: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  color: #6b6b8a;
  font-weight: 500;
  transition: var(--transition);
}
.sidebar-link:hover { background: var(--pink-50); color: var(--pink-600); }
.sidebar-link.active { background: var(--pink-100); color: var(--pink-600); font-weight: 600; }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--pink-50); }
.logout-btn {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-md);
  background: var(--pink-50);
  color: var(--pink-500);
  font-size: 14px;
  font-weight: 500;
}
.logout-btn:hover { background: var(--pink-100); }

.admin-main {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}
.admin-page { display: none; }
.admin-page.active { display: block; }
.admin-main h2 { font-size: 22px; color: #4a4a6a; margin-bottom: 24px; }

/* 统计卡片 */
.stats-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--pink-100);
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-card h3 { font-size: 32px; color: var(--pink-600); }
.stat-card p { font-size: 13px; color: #aaa; margin-top: 4px; }

/* 页面头部 */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.add-btn {
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  background: var(--gradient-btn);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}
.add-btn:hover { background: var(--gradient-btn-hover); }

/* 表格 */
.table-wrap { overflow-x: auto; background: #fff; border-radius: var(--radius-md); border: 1px solid var(--pink-100); }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--pink-50);
  color: #4a4a6a;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
}
.admin-table td { padding: 12px 16px; border-top: 1px solid var(--pink-50); color: #6b6b8a; }
.admin-table tr:hover td { background: var(--pink-50); }
.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 500;
}
.status-pending { background: #fef3c7; color: #d97706; }
.status-approved { background: #d1fae5; color: #059669; }
.status-rejected { background: #fee2e2; color: #dc2626; }

.action-btn {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  margin-right: 4px;
  transition: var(--transition);
}
.btn-approve { background: #d1fae5; color: #059669; }
.btn-approve:hover { background: #a7f3d0; }
.btn-reject { background: #fee2e2; color: #dc2626; }
.btn-reject:hover { background: #fecaca; }
.btn-edit { background: var(--pink-100); color: var(--pink-600); }
.btn-edit:hover { background: var(--pink-200); }
.btn-delete { background: #fee2e2; color: #dc2626; }
.btn-delete:hover { background: #fecaca; }
.btn-activate { background: #d1fae5; color: #059669; }
.btn-activate:hover { background: #a7f3d0; }
.btn-deactivate { background: #fef3c7; color: #d97706; }
.btn-deactivate:hover { background: #fde68a; }

/* 弹窗 */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
}
.modal-card h3 { font-size: 20px; color: var(--pink-700); margin-bottom: 20px; }
.form-actions { display: flex; gap: 12px; margin-top: 24px; }
.save-btn { flex: 2; }
.cancel-btn {
  flex: 1;
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--pink-50);
  color: #6b6b8a;
  font-size: 15px;
  font-weight: 500;
}
.cancel-btn:hover { background: var(--pink-100); }

/* 分页 */
.pagination { margin-top: 20px; display: flex; justify-content: center; gap: 8px; }
.page-btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--pink-200);
  color: #6b6b8a;
  font-size: 13px;
}
.page-btn:hover, .page-btn.active {
  background: var(--pink-100);
  color: var(--pink-600);
  border-color: var(--pink-400);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .ad-grid { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .ad-card { padding: 12px 6px; min-height: 60px; }
  .ad-card .ad-label { font-size: 10px; }
  .ad-card .ad-title { font-size: 12px; }
}

@media (max-width: 768px) {
  .header-inner { height: 56px; }
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 56px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    border-bottom: 1px solid var(--pink-100);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-link { width: 100%; text-align: center; padding: 12px; }

  .hero { padding: 40px 16px 28px; }
  .hero-title { font-size: 24px; }
  .hero-subtitle { font-size: 15px; }
  .search-input { padding: 14px 16px; font-size: 14px; }
  .search-btn { padding: 14px 20px; font-size: 14px; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 22px; }
  .stat-label { font-size: 12px; }

  .ad-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .ad-card { min-height: 56px; }

  .sites-grid { grid-template-columns: 1fr; }
  .site-card { padding: 20px; }

  .cta-card { padding: 32px 20px; }
  .cta-card h2 { font-size: 22px; }

  .footer-content { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }

  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 16px; }

  .submit-card { padding: 28px 20px; }

  .admin-sidebar {
    position: fixed;
    left: -240px;
    top: 0;
    z-index: 200;
    transition: left 0.3s ease;
  }
  .admin-sidebar.mobile-open { left: 0; }
  .admin-main { padding: 20px; }
  .stats-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .ad-grid { grid-template-columns: 1fr 1fr; }
  .stats-cards { grid-template-columns: 1fr; }
  .category-tabs { gap: 6px; }
  .cat-tag { padding: 6px 14px; font-size: 13px; }
  .site-card { padding: 16px; }
}