/* ============================================
   JN28 - 响应式样式 jn-responsive.css
   ============================================ */

/* === 平板端 (md: 768px - 1023px) === */
@media (max-width: 1023px) {
  .jn-nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(74, 69, 58, 0.98);
    flex-direction: column;
    padding: 20px;
    gap: 5px;
  }

  .jn-nav-links.jn-nav-open {
    display: flex;
  }

  .jn-nav-links li a {
    display: block;
    padding: 12px 15px;
    width: 100%;
  }

  .jn-hamburger {
    display: flex;
  }

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

  .jn-hero-desc {
    font-size: 0.95rem;
  }

  .jn-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .jn-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .jn-map-section {
    grid-template-columns: 1fr;
  }

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

  .jn-page-layout {
    grid-template-columns: 1fr;
  }

  .jn-sidebar {
    position: static;
  }

  .jn-app-section {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .jn-live-main-board {
    padding: 30px 20px;
  }
}

/* === 手机横屏 (sm: 640px - 767px) === */
@media (max-width: 767px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }

  .jn-section {
    padding: 50px 0;
  }

  .jn-hero-content h1 {
    font-size: 1.7rem;
  }

  .jn-countdown {
    gap: 10px;
  }

  .jn-countdown-item {
    padding: 8px 12px;
    min-width: 55px;
  }

  .jn-countdown-num {
    font-size: 1.5rem;
  }

  .jn-grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .jn-live-numbers {
    gap: 12px;
  }

  .jn-number-block {
    width: 65px;
    height: 75px;
    font-size: 2rem;
  }

  .jn-live-big-numbers {
    gap: 15px;
  }

  .jn-big-number {
    width: 80px;
    height: 90px;
    font-size: 2.2rem;
  }

  .jn-page-hero {
    height: 300px;
  }

  .jn-page-hero-content h1 {
    font-size: 1.6rem;
  }
}

/* === 手机竖屏 (xs: < 640px) === */
@media (max-width: 639px) {
  html {
    font-size: 15px;
  }

  .jn-container {
    padding: 0 15px;
  }

  .jn-hero {
    min-height: 500px;
  }

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

  .jn-hero-desc {
    display: none;
  }

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

  .jn-btn-primary, .jn-btn-outline {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

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

  .jn-sound-btns {
    gap: 12px;
  }

  .jn-sound-btn {
    width: 80px;
    height: 80px;
  }

  .jn-footer-grid {
    grid-template-columns: 1fr;
  }

  .jn-live-board {
    padding: 25px 15px;
  }

  .jn-live-numbers {
    gap: 8px;
  }

  .jn-number-block {
    width: 55px;
    height: 65px;
    font-size: 1.6rem;
  }

  .jn-big-number {
    width: 65px;
    height: 75px;
    font-size: 1.8rem;
  }

  .jn-history-table {
    font-size: 0.75rem;
  }

  .jn-history-table th, .jn-history-table td {
    padding: 6px 8px;
  }

  .jn-download-btns {
    flex-direction: column;
  }

  .jn-download-btn {
    width: 100%;
    justify-content: center;
  }

  .jn-partners-grid {
    gap: 25px;
  }

  .jn-page-hero {
    height: 250px;
  }

  .jn-page-hero-content h1 {
    font-size: 1.3rem;
  }

  .jn-live-shortcuts {
    flex-direction: column;
    align-items: center;
  }

  .jn-live-shortcuts a {
    width: 100%;
    max-width: 250px;
    text-align: center;
  }
}