/* ============================================
   每日大赛 - 咨询顾问官网 CSS
   Professional Consulting Website Stylesheet
   ============================================ */

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

:root {
  --primary-color: #1a3a52;
  --secondary-color: #d4af37;
  --accent-color: #2c5aa0;
  --text-dark: #1a1a1a;
  --text-light: #666666;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e0e0e0;
  --success-color: #27ae60;
  --warning-color: #f39c12;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
}

/* ============================================
   Typography
   ============================================ */

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

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  line-height: 1.3;
}

h3 {
  font-size: 1.5rem;
  line-height: 1.4;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
  line-height: 1.8;
}

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

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

/* ============================================
   Container & Layout
   ============================================ */

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

.section {
  padding: 60px 0;
}

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

.section-title h2 {
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--secondary-color);
  margin: 10px auto 0;
}

/* ============================================
   Header & Navigation
   ============================================ */

header {
  background-color: var(--bg-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-weight: bold;
}

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

nav a {
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

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

.search-box {
  display: flex;
  align-items: center;
  background-color: var(--bg-light);
  border-radius: 20px;
  padding: 8px 15px;
  gap: 10px;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  width: 150px;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.search-box input::placeholder {
  color: #999;
}

.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  font-size: 1.1rem;
}

.cta-button {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 10px 25px;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

/* ============================================
   Hero Banner
   ============================================ */

.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: var(--bg-white);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -50%;
  width: 100%;
  height: 100%;
  background-image: url('/images/hero-banner-consulting.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

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

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

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 15px 40px;
  border-radius: 5px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary:hover {
  background-color: var(--bg-white);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--bg-white);
  padding: 15px 40px;
  border: 2px solid var(--bg-white);
  border-radius: 5px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 1rem;
}

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

/* ============================================
   Services Section
   ============================================ */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--secondary-color);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  color: var(--secondary-color);
}

.service-card h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
}

.service-card p {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.service-link {
  color: var(--accent-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.3s ease;
}

.service-link:hover {
  gap: 10px;
  color: var(--secondary-color);
}

/* ============================================
   Team Section
   ============================================ */

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.team-member {
  background-color: var(--bg-light);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.3s ease;
  text-align: center;
}

.team-member:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.team-member-image {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-size: 3rem;
  font-weight: bold;
}

.team-member-info {
  padding: 20px;
}

.team-member h3 {
  color: var(--primary-color);
  margin-bottom: 5px;
}

.team-member .title {
  color: var(--secondary-color);
  font-weight: 600;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.team-member .experience {
  color: var(--text-light);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.team-member .skills {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  justify-content: center;
  margin-bottom: 15px;
}

.skill-tag {
  background-color: var(--bg-white);
  color: var(--accent-color);
  padding: 3px 10px;
  border-radius: 15px;
  font-size: 0.75rem;
  border: 1px solid var(--accent-color);
}

.contact-expert {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 8px 15px;
  border-radius: 5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.contact-expert:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

/* ============================================
   Process Section
   ============================================ */

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.process-step {
  background-color: var(--bg-light);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.process-step:hover {
  background-color: var(--primary-color);
  color: var(--bg-white);
}

.process-step:hover h3,
.process-step:hover p {
  color: var(--bg-white);
}

.step-number {
  width: 50px;
  height: 50px;
  background-color: var(--secondary-color);
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.5rem;
  margin: 0 auto 15px;
}

.process-step h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

.process-step p {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ============================================
   Cases Section
   ============================================ */

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.case-card {
  background-color: var(--bg-white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.case-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-size: 2.5rem;
  font-weight: bold;
}

.case-content {
  padding: 25px;
}

.case-category {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.case-card h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

.case-detail {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.case-result {
  color: var(--success-color);
  font-weight: 600;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
}

/* ============================================
   Articles Section
   ============================================ */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.article-card {
  background-color: var(--bg-white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.article-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.article-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-size: 2rem;
}

.article-content {
  padding: 20px;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.article-card h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.article-excerpt {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 15px;
  line-height: 1.6;
}

.read-more {
  color: var(--accent-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.3s ease;
}

.read-more:hover {
  gap: 10px;
  color: var(--secondary-color);
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.testimonial-card {
  background-color: var(--bg-light);
  border-left: 4px solid var(--secondary-color);
  padding: 25px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.testimonial-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-weight: bold;
  font-size: 1.2rem;
}

.user-info h4 {
  color: var(--primary-color);
  margin: 0;
  font-size: 0.95rem;
}

.user-info .title {
  color: var(--text-light);
  font-size: 0.8rem;
  margin: 0;
}

.rating {
  color: var(--warning-color);
  font-size: 0.9rem;
}

.testimonial-text {
  color: var(--text-dark);
  font-style: italic;
  margin-bottom: 10px;
  line-height: 1.6;
}

.testimonial-project {
  color: var(--accent-color);
  font-size: 0.85rem;
  font-weight: 600;
}

/* ============================================
   FAQ Section
   ============================================ */

.faq-container {
  max-width: 800px;
  margin: 40px auto;
}

.faq-item {
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.faq-question {
  background-color: var(--bg-light);
  padding: 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--primary-color);
  transition: all 0.3s ease;
}

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

.faq-toggle {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 20px;
  color: var(--text-light);
  display: none;
  background-color: var(--bg-white);
  line-height: 1.8;
}

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

/* ============================================
   Contact Section
   ============================================ */

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  margin-top: 40px;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 30px;
}

.contact-item {
  display: flex;
  gap: 20px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-details h4 {
  color: var(--primary-color);
  margin-bottom: 5px;
}

.contact-details p {
  color: var(--text-light);
  margin: 0;
}

.contact-form {
  background-color: var(--bg-light);
  padding: 30px;
  border-radius: 10px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-color);
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 5px rgba(44, 90, 160, 0.2);
}

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

.form-submit {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  padding: 15px 40px;
  border-radius: 5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  width: 100%;
}

.form-submit:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
}

/* ============================================
   Footer
   ============================================ */

footer {
  background-color: var(--primary-color);
  color: var(--bg-white);
  padding: 50px 0 20px;
}

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

.footer-section h4 {
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 10px;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

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

.social-links {
  display: flex;
  gap: 15px;
}

.social-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  transition: all 0.3s ease;
  cursor: pointer;
}

.social-icon:hover {
  background-color: var(--secondary-color);
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--secondary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.2rem;
}

/* ============================================
   Video Cards
   ============================================ */

.video-card {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  background-color: var(--bg-light);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
}

.video-card:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
}

.play-button {
  width: 80px;
  height: 80px;
  background-color: var(--secondary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--primary-color);
  transition: all 0.3s ease;
  opacity: 0;
}

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

/* ============================================
   Responsive Design
   ============================================ */

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

  h2 {
    font-size: 1.5rem;
  }

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

  .section {
    padding: 40px 0;
  }

  .header-content {
    flex-wrap: wrap;
    gap: 15px;
  }

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

  .search-box {
    display: none;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

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

  .services-grid,
  .team-grid,
  .cases-grid,
  .articles-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .hero {
    padding: 60px 0;
  }

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

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

  nav {
    gap: 10px;
    font-size: 0.8rem;
  }

  .cta-button {
    padding: 8px 15px;
    font-size: 0.9rem;
  }

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

  .contact-item {
    gap: 15px;
  }

  .contact-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}