@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

body {
  font-family: 'Inter', 'Noto Sans SC', sans-serif;
  background: #ffffff;
  color: #0f172a;
}

.gradient-text {
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-label {
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.scroll-container {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

.scroll-item {
  scroll-snap-align: start;
}

.nav-blur {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.step-line {
  position: relative;
}

.step-line::after {
  content: '';
  position: absolute;
  top: 28px;
  left: 180px;
  right: -60px;
  height: 0;
  border-bottom: 2px dashed #cbd5e1;
}

@media (max-width: 767px) {
  .step-line::after {
    display: none;
  }
}

.step-line:last-child::after {
  display: none;
}

.pricing-popular {
  border-color: #2563eb;
  position: relative;
}

.pricing-popular::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: white;
  padding: 2px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer.open {
  max-height: 500px;
}

.marquee {
  display: flex;
  gap: 2rem;
  animation: marquee 20s linear infinite;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.hero-pattern {
  background-image: radial-gradient(circle at 1px 1px, #e2e8f0 1px, transparent 0);
  background-size: 40px 40px;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* 导航栏透明模式 - 默认在 hero 深色背景上 */
.nav-text { color: #fff; }
.nav-text-muted { color: rgba(255,255,255,0.5); }
.nav-link { color: rgba(255,255,255,0.75); }
#nav-cta { background: rgba(255,255,255,0.15); color: #fff; border-color: rgba(255,255,255,0.2); }
#nav-cta:hover { background: rgba(255,255,255,0.25); }

/* 导航栏白色模式 - 滚出 hero 后 */
.navbar-scrolled {
  background: rgba(255,255,255,0.8) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #f1f5f9;
}
.navbar-scrolled .nav-text { color: #0f172a; }
.navbar-scrolled .nav-text-muted { color: #64748b; }
.navbar-scrolled .nav-link { color: #64748b; }
.navbar-scrolled .nav-link:hover { color: #0f172a; }
.navbar-scrolled #nav-cta { background: #0f172a; color: #fff; border-color: transparent; }
.navbar-scrolled #nav-cta:hover { background: #1e293b; }

/* ── 下拉菜单 ── */
.dropdown { position: relative; }
.dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,0.75);
}
.dropdown-toggle svg {
  transition: transform 0.25s;
}
.dropdown:hover .dropdown-toggle svg {
  transform: rotate(180deg);
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #1e293b;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 8px 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
  pointer-events: auto;
}
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
  background: transparent;
}
.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.6) !important;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
}
.dropdown-menu a:hover {
  background: rgba(37,99,235,0.15);
  color: #fff !important;
}
.dropdown-menu .menu-disabled {
  color: rgba(255,255,255,0.2) !important;
  cursor: default;
  pointer-events: none;
}
.dropdown-menu .menu-divider {
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: 6px 16px;
}

/* 导航栏白色模式下下拉菜单适配 */
.navbar-scrolled .dropdown-toggle { color: #64748b; }
.navbar-scrolled .dropdown-toggle:hover { color: #0f172a; }
.navbar-scrolled .dropdown-menu {
  background: #fff;
  border-color: #e2e8f0;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}
.navbar-scrolled .dropdown-menu a {
  color: rgba(15,23,42,0.6) !important;
}
.navbar-scrolled .dropdown-menu a:hover {
  background: rgba(37,99,235,0.08);
  color: #0f172a !important;
}
.navbar-scrolled .dropdown-menu .menu-disabled {
  color: rgba(15,23,42,0.2) !important;
}

/* ── 移动端导航 ── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 4px;
}
.navbar-scrolled .nav-toggle { color: #0f172a; }

@media (max-width: 767px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 12px;
    background: rgba(30,41,59,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 16px 20px;
    gap: 14px;
    min-width: 200px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  }
  .nav-links.mobile-open { display: flex; }
  .nav-links a,
  .nav-links .dropdown-toggle { font-size: 14px; color: rgba(255,255,255,0.75); }
  .nav-links .dropdown-toggle:hover { color: #fff; }
  .dropdown-menu {
    position: static;
    transform: none;
    background: transparent;
    border: none;
    padding: 0;
    margin: 8px 0 0 16px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
  }
  .dropdown-menu::before { display: none; }
  .dropdown-menu a { font-size: 13px; padding: 6px 0; color: rgba(255,255,255,0.5) !important; }
  .dropdown-menu a:hover { color: #fff !important; background: transparent; }
  .navbar-scrolled .nav-links {
    background: rgba(255,255,255,0.95);
    border-color: #e2e8f0;
  }
  .navbar-scrolled .nav-links a,
  .navbar-scrolled .nav-links .dropdown-toggle { color: #64748b; }
  .navbar-scrolled .nav-links a:hover,
  .navbar-scrolled .nav-links .dropdown-toggle:hover { color: #0f172a; }
  .navbar-scrolled .dropdown-menu a { color: rgba(15,23,42,0.5) !important; }
  .navbar-scrolled .dropdown-menu a:hover { color: #0f172a !important; }
}

/* 视频播放弹框 */
#video-modal video {
  outline: none;
  border-radius: 12px;
}
#video-modal video::-webkit-media-controls-fullscreen-button { display: none; }