/* ========================================
   国际米兰中文官网 - letou66.net
   蓝黑主题配色 | 响应式设计
   ======================================== */

:root {
  --inter-blue: #003DA5;
  --inter-black: #0A0A14;
  --inter-gold: #D4AF37;
  --inter-light-blue: #4A90D9;
  --inter-dark: #0D1117;
  --inter-gray: #1A1F2E;
  --inter-light-gray: #F0F2F5;
  --text-primary: #E8ECF1;
  --text-secondary: #9CA3AF;
  --text-dark: #1A1A2E;
  --milan-red: #E3001B;
  --gradient-blue: linear-gradient(135deg, #003DA5 0%, #001A4D 100%);
  --gradient-gold: linear-gradient(135deg, #D4AF37 0%, #B8860B 100%);
  --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);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--inter-dark);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
}

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

a { color: var(--inter-light-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--inter-gold); }

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

/* ========== Header ========== */
.site-header { position: sticky; top: 0; z-index: 1000; }

.header-top {
  background: var(--inter-black);
  padding: 6px 0;
  font-size: 12px;
  display: flex;
  justify-content: center;
}
.header-top .container { display: flex; justify-content: space-between; align-items: center; }
.header-slogan { color: var(--inter-gold); }
.header-date { color: var(--text-secondary); }

.main-nav {
  background: var(--gradient-blue);
  padding: 0;
  box-shadow: var(--shadow-md);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }

.logo {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 0;
  color: #fff !important;
  font-weight: 700;
}
.logo-icon { font-size: 24px; }
.logo-text { font-size: 20px; }
.logo-text small { display: block; font-size: 11px; font-weight: 400; color: var(--inter-gold); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 0;
}
.nav-links li a {
  display: block;
  padding: 18px 16px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-links li a:hover,
.nav-links li a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}
.nav-links li a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: var(--inter-gold);
  border-radius: 2px;
}

.menu-toggle {
  display: none;
  background: none;
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 24px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  background: var(--gradient-blue);
  padding: 80px 0 60px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(212,175,55,0.1) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite;
}
@keyframes heroGlow {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 1; }
}
.hero-content { position: relative; z-index: 2; }
.hero h1 {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 16px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.hero-sub {
  font-size: 20px;
  color: var(--inter-gold);
  margin-bottom: 12px;
  font-weight: 500;
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 42px;
  font-weight: 900;
  color: var(--inter-gold);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
}

/* ========== Latest Banner ========== */
.latest-banner {
  background: var(--gradient-gold);
  padding: 24px 0;
}
.trophy-card {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--inter-black);
}
.trophy-icon { font-size: 48px; }
.trophy-card h3 { font-size: 22px; margin-bottom: 4px; }
.trophy-card p { font-size: 14px; opacity: 0.8; }

/* ========== Sections ========== */
.section { padding: 60px 0; }
.section-dark { background: var(--inter-gray); }
.section-light { background: var(--inter-light-gray); color: var(--text-dark); }
.section-gold { background: linear-gradient(135deg, #1A1500 0%, #0D1117 100%); border-top: 2px solid var(--inter-gold); border-bottom: 2px solid var(--inter-gold); }

.section-title {
  font-size: 32px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
}
.section-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 40px;
}

/* ========== Intro Grid ========== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.intro-card {
  background: var(--inter-gray);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}
.intro-card:hover { border-color: var(--inter-gold); transform: translateY(-2px); }
.intro-card h3 { font-size: 20px; margin-bottom: 16px; color: var(--inter-gold); }
.info-list { list-style: none; }
.info-list li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 14px; }
.info-list li:last-child { border-bottom: none; }

/* ========== Compare Preview ========== */
.compare-preview {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: start;
  margin-top: 20px;
}
.compare-col {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid rgba(255,255,255,0.1);
}
.inter-col { border-top: 3px solid var(--inter-blue); }
.milan-col { border-top: 3px solid var(--milan-red); }
.compare-col h3 { font-size: 20px; margin-bottom: 16px; }
.compare-col ul { list-style: none; }
.compare-col li { padding: 8px 0; font-size: 14px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.compare-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 60px;
}
.compare-vs span {
  font-size: 36px;
  font-weight: 900;
  color: var(--inter-gold);
  background: rgba(255,255,255,0.05);
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========== Timeline ========== */
.timeline { max-width: 800px; margin: 0 auto; }
.timeline-item {
  display: flex;
  gap: 24px;
  margin-bottom: 30px;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: 80px;
  top: 50px;
  bottom: -30px;
  width: 2px;
  background: rgba(212,175,55,0.3);
}
.timeline-item:last-child::before { display: none; }
.timeline-year {
  flex-shrink: 0;
  width: 90px;
  font-size: 16px;
  font-weight: 800;
  color: var(--inter-gold);
  padding-top: 4px;
}
.timeline-content {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  border-left: 3px solid var(--inter-gold);
  flex: 1;
}
.timeline-content h4 { font-size: 17px; margin-bottom: 8px; color: #fff; }
.timeline-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* ========== News Grid ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--inter-gray);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.news-card:hover { border-color: var(--inter-blue); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card-body { padding: 24px; }
.news-card-date { font-size: 12px; color: var(--inter-gold); margin-bottom: 8px; }
.news-card-title { font-size: 16px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.news-card-excerpt { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.news-card-tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(0,61,165,0.3);
  color: var(--inter-light-blue);
  border-radius: 20px;
  margin-top: 12px;
}

/* ========== News Full List ========== */
.news-full-list { display: flex; flex-direction: column; gap: 20px; }
.news-full-item {
  background: var(--inter-gray);
  border-radius: var(--radius);
  padding: 28px 32px;
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.news-full-item:hover { border-color: var(--inter-blue); }
.news-full-item .news-date { font-size: 13px; color: var(--inter-gold); margin-bottom: 8px; }
.news-full-item h3 { font-size: 20px; margin-bottom: 12px; line-height: 1.4; }
.news-full-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.news-full-item .news-tag { display: inline-block; font-size: 11px; padding: 3px 10px; background: rgba(0,61,165,0.3); color: var(--inter-light-blue); border-radius: 20px; margin-top: 12px; }

/* ========== FAQ ========== */
.faq-list, .faq-full-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--inter-gray);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  transition: var(--transition);
}
.section-light .faq-item { background: #fff; border-color: #e5e7eb; }
.faq-item:hover { border-color: var(--inter-blue); }
.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
.faq-question::after {
  content: '+';
  font-size: 24px;
  color: var(--inter-gold);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.active .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.section-light .faq-answer-inner { color: #4B5563; }
.faq-item.active .faq-answer { max-height: 600px; }

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--gradient-blue);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,61,165,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,61,165,0.6);
  color: #fff;
}

/* ========== Article Pages ========== */
.article-page { padding: 40px 0 60px; }
.breadcrumb { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; }
.breadcrumb a { color: var(--inter-light-blue); }
.article-page h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; line-height: 1.3; }
.article-meta { font-size: 13px; color: var(--text-secondary); margin-bottom: 40px; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.article-content h2 { font-size: 26px; font-weight: 700; margin: 40px 0 16px; color: var(--inter-gold); }
.article-content h3 { font-size: 20px; font-weight: 600; margin: 28px 0 12px; color: var(--inter-light-blue); }
.article-content p { margin-bottom: 16px; line-height: 1.8; }
.article-content ul, .article-content ol { margin: 12px 0 20px 24px; }
.article-content li { margin-bottom: 8px; line-height: 1.7; }

.highlight-box {
  background: linear-gradient(135deg, rgba(0,61,165,0.2) 0%, rgba(212,175,55,0.1) 100%);
  border: 1px solid var(--inter-gold);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 32px;
}
.highlight-box p { margin-bottom: 0; }

.quote {
  background: var(--inter-gray);
  border-left: 4px solid var(--inter-gold);
  padding: 20px 24px;
  margin: 24px 0;
  font-style: italic;
  font-size: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ========== Data Table ========== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 28px;
  font-size: 14px;
}
.data-table th, .data-table td {
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,0.1);
  text-align: left;
}
.data-table th {
  background: rgba(0,61,165,0.3);
  font-weight: 600;
  color: var(--inter-gold);
}
.data-table tr:nth-child(even) { background: rgba(255,255,255,0.02); }
.data-table .inter-td { color: var(--inter-light-blue); font-weight: 600; }
.data-table .milan-td { color: var(--milan-red); font-weight: 600; }

/* ========== Legends Grid ========== */
.legends-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 20px 0;
}
.legend-card {
  background: var(--inter-gray);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.legend-card:hover { border-color: var(--inter-gold); }
.legend-card h4 { font-size: 16px; color: var(--inter-gold); margin-bottom: 8px; }
.legend-card p { font-size: 12px; color: var(--text-secondary); }

/* ========== Trophy Compare ========== */
.trophy-compare { margin: 20px 0 30px; }
.trophy-bar { margin-bottom: 16px; }
.trophy-bar h4 { font-size: 14px; margin-bottom: 8px; }
.bar-fill {
  height: 36px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 16px;
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  transition: width 1s ease;
}
.inter-bar .bar-fill { background: var(--gradient-blue); }
.milan-bar .bar-fill { background: linear-gradient(135deg, #E3001B 0%, #8B0000 100%); }

/* ========== Search ========== */
.news-search-bar { margin-bottom: 30px; }
.search-input {
  width: 100%;
  padding: 14px 20px;
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  background: var(--inter-gray);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: var(--transition);
}
.search-input:focus { border-color: var(--inter-blue); }
.search-input::placeholder { color: var(--text-secondary); }

/* ========== Footer ========== */
.site-footer {
  background: var(--inter-black);
  padding: 50px 0 20px;
  border-top: 2px solid var(--inter-blue);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 { color: var(--inter-gold); font-size: 16px; margin-bottom: 16px; }
.footer-col p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--text-secondary); font-size: 13px; }
.footer-col a:hover { color: var(--inter-gold); }
.footer-slogan { color: var(--inter-gold) !important; font-weight: 600; font-size: 16px !important; margin-top: 8px; }
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: var(--text-secondary);
}

/* ========== Utilities ========== */
.text-center { text-align: center; }
.mt-2 { margin-top: 30px; }

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .hero h1 { font-size: 36px; }
  .hero-stats { gap: 24px; }
  .stat-num { font-size: 32px; }
  .intro-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-preview { grid-template-columns: 1fr; }
  .compare-vs { padding: 10px 0; }
  .compare-vs span { width: 50px; height: 50px; font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .legends-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--inter-blue);
    flex-direction: column;
    padding: 10px 0;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.active { display: flex; }
  .nav-links li a { padding: 14px 24px; }
  .nav-links li a.active::after { display: none; }

  .hero { padding: 50px 0 40px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { gap: 16px; }
  .stat-num { font-size: 28px; }
  .stat-label { font-size: 12px; }

  .section { padding: 40px 0; }
  .section-title { font-size: 24px; }

  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .legends-grid { grid-template-columns: 1fr 1fr; }
  .article-page h1 { font-size: 26px; }
  .article-content h2 { font-size: 22px; }

  .timeline-item { flex-direction: column; gap: 8px; }
  .timeline-item::before { display: none; }
  .timeline-year { width: auto; }

  .trophy-card { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 24px; }
  .hero-stats { flex-direction: column; gap: 12px; }
  .legends-grid { grid-template-columns: 1fr; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 8px 10px; }
}

/* ========== Light Theme (for FAQ section) ========== */
.section-light .section-title { color: var(--inter-blue); }
.section-light .faq-question { color: var(--text-dark); }
.section-light .faq-question::after { color: var(--inter-blue); }

/* ========== Scroll Animations ========== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}