/* ========================================
   每日大赛 - 主样式文件
   品牌色：紫色(#8B5CF6) 粉色(#EC4899)
   ======================================== */

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

:root {
  --primary-color: #8B5CF6;
  --secondary-color: #EC4899;
  --accent-color: #06B6D4;
  --dark-bg: #0F172A;
  --light-bg: #FFFFFF;
  --text-dark: #1E293B;
  --text-light: #64748B;
  --border-color: #E2E8F0;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --danger-color: #EF4444;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light-bg);
  overflow-x: hidden;
}

/* ========================================
   排版系统
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.1rem;
}

h6 {
  font-size: 1rem;
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ========================================
   容器和布局
   ======================================== */

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

.container-fluid {
  width: 100%;
  padding: 0 20px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: -10px;
}

.row > * {
  margin: 10px;
}

.col {
  flex: 1;
  min-width: 250px;
}

.col-1 { flex: 0 0 8.333%; }
.col-2 { flex: 0 0 16.666%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.333%; }
.col-6 { flex: 0 0 50%; }
.col-12 { flex: 0 0 100%; }

/* ========================================
   头部导航
   ======================================== */

header {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.3e3pw {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo img {
  height: 40px;
  width: auto;
}

nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

nav a {
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
  padding: 5px 0;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-color);
  border-radius: 25px;
  padding: 8px 15px;
  width: 250px;
  transition: all 0.3s ease;
}

.search-box:focus-within {
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
  border-color: var(--primary-color);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  width: 100%;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.search-box input::placeholder {
  color: var(--text-light);
}

.search-icon {
  color: var(--text-light);
  margin-left: 10px;
  cursor: pointer;
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: white;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-image {
  margin-top: 40px;
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ========================================
   按钮样式
   ======================================== */

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 25px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* ========================================
   卡片组件
   ======================================== */

.card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  position: relative;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.card-text {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 15px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
}

/* 视频卡片特殊样式 */
.video-card {
  position: relative;
  cursor: pointer;
}

.video-card .card-image {
  position: relative;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(139, 92, 246, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 10;
}

.play-button::after {
  content: '▶';
  color: white;
  font-size: 1.5rem;
  margin-left: 4px;
}

.video-card:hover .play-button {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.video-stats {
  display: flex;
  gap: 15px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ========================================
   部分标题
   ======================================== */

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-top: 20px;
}

/* ========================================
   网格布局
   ======================================== */

.grid {
  display: grid;
  gap: 30px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   部分间距
   ======================================== */

section {
  padding: 60px 0;
}

section.light-bg {
  background: #F8FAFC;
}

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

section.dark-bg h2,
section.dark-bg h3 {
  color: white;
}

section.dark-bg p {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   标签和徽章
   ======================================== */

.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary-color);
}

.badge-secondary {
  background: rgba(236, 72, 153, 0.1);
  color: var(--secondary-color);
}

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

.tag {
  display: inline-block;
  padding: 4px 10px;
  margin-right: 8px;
  margin-bottom: 8px;
  border-radius: 15px;
  font-size: 0.8rem;
  background: var(--border-color);
  color: var(--text-dark);
}

/* ========================================
   底部
   ======================================== */

footer {
  background: var(--dark-bg);
  color: white;
  padding: 50px 0 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  color: white;
  margin-bottom: 20px;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 12px;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.copyright {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.qrcode-container {
  display: flex;
  gap: 30px;
  align-items: center;
}

.qrcode-item {
  text-align: center;
}

.qrcode-item img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  background: white;
  padding: 5px;
}

.qrcode-item p {
  margin-top: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   表单
   ======================================== */

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

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

/* ========================================
   面包屑导航
   ======================================== */

.breadcrumb {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 30px;
  font-size: 0.9rem;
}

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

.breadcrumb span {
  color: var(--text-light);
}

.breadcrumb .separator {
  color: var(--text-light);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero {
    padding: 60px 0;
  }

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

  .hero p {
    font-size: 1rem;
  }

  nav {
    gap: 15px;
    font-size: 0.9rem;
  }

  .search-box {
    width: 150px;
    padding: 6px 10px;
  }

  .search-box input {
    font-size: 0.8rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .qrcode-container {
    flex-direction: column;
    gap: 20px;
  }

  section {
    padding: 40px 0;
  }

  .section-header {
    margin-bottom: 30px;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .card-image {
    height: 200px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  nav {
    display: none;
  }

  .3e3pw {
    justify-content: space-between;
  }

  .search-box {
    display: none;
  }

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

  .hero p {
    font-size: 0.9rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  section {
    padding: 30px 0;
  }

  .card-image {
    height: 150px;
  }
}

/* ========================================
   动画
   ======================================== */

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.slide-in-up {
  animation: slideInUp 0.6s ease-out;
}

/* ========================================
   工具类
   ======================================== */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-left {
  text-align: left;
}

.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-50 { margin-top: 50px; }

.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }
.mb-50 { margin-bottom: 50px; }

.pt-20 { padding-top: 20px; }
.pt-30 { padding-top: 30px; }
.pt-40 { padding-top: 40px; }

.pb-20 { padding-bottom: 20px; }
.pb-30 { padding-bottom: 30px; }
.pb-40 { padding-bottom: 40px; }

.hidden {
  display: none;
}

.visible {
  display: block;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }
.gap-30 { gap: 30px; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.rounded { border-radius: 8px; }
.rounded-lg { border-radius: 12px; }
.rounded-full { border-radius: 9999px; }

.shadow-sm {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.shadow-md {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.shadow-lg {
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* ========================================
   无障碍
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
   加载动画
   ======================================== */

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid rgba(139, 92, 246, 0.2);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   法律页面样式
   ======================================== */

.legal-content {
  line-height: 1.8;
}

.legal-content h2 {
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--primary-color);
  font-size: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.legal-content h3 {
  margin-top: 20px;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.legal-content p {
  margin-bottom: 15px;
  color: var(--text-dark);
}

.legal-content ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

.legal-content li {
  margin-bottom: 10px;
  color: var(--text-dark);
}

.legal-content strong {
  color: var(--primary-color);
}

/* ========================================
   FAQ样式
   ======================================== */

.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.1);
  border-color: var(--primary-color);
}

.faq-question {
  padding: 20px;
  background-color: #f8f9fa;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background-color: #f0f1f3;
}

.faq-question h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-dark);
}

.faq-toggle {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: bold;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 20px;
  background-color: #ffffff;
  border-top: 1px solid var(--border-color);
  display: none;
  animation: slideDown 0.3s ease;
}

.faq-item.active .faq-answer {
  display: block;
}

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

.faq-answer p {
  margin-bottom: 15px;
  color: var(--text-dark);
  line-height: 1.8;
}

/* ========================================
   专家卡片样式
   ======================================== */

.expert-card {
  background: white;
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.expert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.15);
  border-color: var(--primary-color);
}

.expert-avatar {
  font-size: 3rem;
  margin-bottom: 15px;
}

.expert-card h3 {
  font-size: 1.3rem;
  margin-bottom: 5px;
  color: var(--text-dark);
}

.expert-title {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 10px;
}

.expert-bio {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 15px;
  line-height: 1.6;
}

.expert-skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.skill-tag {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ========================================
   评价卡片样式
   ======================================== */

.review-card {
  background: white;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.review-card:hover {
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.15);
  border-color: var(--primary-color);
}

.review-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.reviewer-avatar {
  font-size: 2.5rem;
  margin-right: 15px;
}

.review-header h4 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-dark);
}

.review-date {
  font-size: 0.85rem;
  color: var(--text-light);
  margin: 0;
}

.review-rating {
  font-size: 1.2rem;
  margin-bottom: 15px;
  letter-spacing: 2px;
}

.review-text {
  color: var(--text-dark);
  line-height: 1.8;
  margin-bottom: 15px;
}

.review-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ========================================
   社区功能卡片
   ======================================== */

.community-feature {
  background: white;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-left: 4px solid var(--primary-color);
  transition: all 0.3s ease;
}

.community-feature:hover {
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.15);
  transform: translateX(5px);
}

.community-feature h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.2rem;
}

.community-feature p {
  color: var(--text-dark);
  margin-bottom: 15px;
  line-height: 1.8;
}

.community-feature ul {
  margin-left: 20px;
  color: var(--text-dark);
}

.community-feature li {
  margin-bottom: 8px;
}

/* ========================================
   特性卡片
   ======================================== */

.feature-card {
  background: white;
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.15);
  border-color: var(--primary-color);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.feature-card h3 {
  color: var(--text-dark);
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* ========================================
   合作品牌
   ======================================== */

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.partner-logo {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  font-weight: 600;
  color: var(--text-light);
  transition: all 0.3s ease;
  cursor: pointer;
}

.partner-logo:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.1);
}

/* ========================================
   按钮大小变体
   ======================================== */

.btn-lg {
  padding: 15px 40px;
  font-size: 1.1rem;
}