@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800;900&family=Montserrat:wght@700;800;900&family=Playfair+Display:ital,wght@1,700;1,800;1,900&family=Ma+Shan+Zheng&display=swap');

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

body {
  font-family: 'Inter', sans-serif;
  background-color: #f8fafc;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

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

.font-montserrat {
  font-family: 'Montserrat', sans-serif;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.gradient-text {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-gradient {
  background: url(../img/hero-1.jpg) center / cover no-repeat;
  background-color: #0f172a;
}

.glass-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-scrolled {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Nav themes */
.nav-theme-dark {
  background: transparent;
}
.nav-theme-dark #nav-title {
  color: #f8fafc;
}
.nav-theme-dark .nav-link {
  color: #fff;
}

.nav-theme-light {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.nav-theme-light #nav-title {
  color: #0f172a;
}
.nav-theme-light .nav-link {
  color: #475569;
}

/* Mobile menu */
#mobile-menu {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.nav-theme-dark #mobile-menu {
  background: rgba(15, 23, 42, 0.98);
}
.nav-theme-light #mobile-menu {
  background: rgba(255, 255, 255, 0.98);
  border-top-color: rgba(0, 0, 0, 0.08);
}
#mobile-menu a {
  color: #cbd5e1;
}
#mobile-menu a:hover {
  color: #818cf8;
}
.nav-theme-light #mobile-menu a {
  color: #334155;
}
.nav-theme-light #mobile-menu a:hover {
  color: #4f46e5;
}

/* Hamburger button */
#mobile-menu-btn {
  color: #f8fafc;
}
.nav-theme-light #mobile-menu-btn {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.06) !important;
}

.pricing-card-popular {
  position: relative;
  border: 2px solid #4f46e5;
  transform: scale(1.05);
  z-index: 10;
}

.pricing-card-popular::before {
  content: "MOST POPULAR / 最受欢迎";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  padding: 2px 16px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: bold;
  white-space: nowrap;
}

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

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

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

@keyframes loading {
  0% { width: 0%; }
  50% { width: 100%; }
  100% { width: 0%; }
}

.animate-marquee-left {
  animation: marquee-left 30s linear infinite;
}

.animate-marquee-right {
  animation: marquee-right 30s linear infinite;
}

.marquee-track {
  width: fit-content;
  white-space: nowrap;
}

.marquee-container:hover .marquee-track {
  animation-play-state: paused;
}

html {
  scroll-behavior: smooth;
}

.page-banner {
  padding: 6rem 1.5rem;
  background: url(../img/中国智造与全球商机.jpg) center / cover no-repeat;
  background-color: #0f172a;
  text-align: center;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-banner h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}

.page-banner-about {
  background: url(../img/chat-27655.jpg) center / cover no-repeat;
  background-color: #0f172a;
}

.page-banner-news {
  background: url(../img/chat-27669.jpg) center / cover no-repeat;
  background-color: #0f172a;
}

.page-banner-contact {
  background: url(../img/chat-27673.jpg) center / cover no-repeat;
  background-color: #0f172a;
}

.page-banner p {
  font-size: 1.125rem;
  color: #fff;
  max-width: 36rem;
  margin: 0 auto;
}
@media (min-width: 768px) {
  .page-banner { padding: 6rem 2rem; }
  .page-banner h1 { font-size: 3.5rem; }
}

@media (max-width: 767px) {
  .page-banner { padding: 5rem 1.5rem; min-height: 350px; }
  .page-banner h1 { font-size: 1.75rem; }
  .page-banner p { font-size: 0.95rem; }
  #about .grid { gap: 2rem; }
  #about .text-4xl { font-size: 1.75rem; }
  #about .text-3xl { font-size: 1.5rem; }
  #about .text-7xl { font-size: 3rem; }
  #about .mb-16 { margin-bottom: 2rem; }
  #about a.px-8 { padding-left: 1.25rem; padding-right: 1.25rem; }
}

.swiper-wrap { position:relative; width:100%; max-width:calc(min(47rem, 90vw)); margin:0 auto; }
.swiper-container { position:relative; overflow:hidden; }
.swiper, .swiper-wrapper { max-width:100%; }

.swiper {
  width:100%; padding:60px 0 95px 0;
  overflow:hidden; position:relative;
  perspective:1200px;
}

.swiper-wrapper {
  display: flex;
  position: relative;
  width: 100%;
  transform-style: preserve-3d;
  transition: transform .5s ease;
}

.swiper-slide {
  flex-shrink: 0;
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: 12px;
  box-shadow: -1px 5px 15px #0000001f;
  transition: transform .5s ease, opacity .5s ease;
  background: #fff;
  border: 1px solid #e2e8f0;
}
.swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
}

.swiper-button-prev,
.swiper-button-next {
  position: absolute;
  top: 47%;
  width: 50px;
  height: 50px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 11px rgba(0,0,0,.17);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  border: none;
  color: #4f46e5;
}
.swiper-button-prev svg,
.swiper-button-next svg { width: 22px; }
.swiper-button-prev { left: 6px; }
.swiper-button-next { right: 6px; }
.swiper-button-prev,
.swiper-button-next { display: flex; }
@media(min-width: 760px) {
  .swiper-button-prev { left: -30px; }
  .swiper-button-next { right: -30px; }
  .swiper-button-prev svg,
  .swiper-button-next svg { width: 25px; }
}

.bg-social {
  background-image: url('../img/chat-11491.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-geo {
  background-image: url('../img/chat-11507.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-credits {
  background-image: url('../img/chat-11519.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-faq {
  background-image: url('../img/chat-11539.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-pricing {
  background-image: url('../img/chat-11539.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-ai-journey {
  background-image: url('../img/chat-11563.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.bg-footer {
  background-image: url('../img/chat-11235.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

/* Utility classes */
.max-w-7xl { max-width: 1280px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.text-center { text-align: center; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-grow { flex-grow: 1; }
.hidden { display: none; }
.min-h-screen { min-height: 100vh; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.top-0 { top: 0; }
.w-full { width: 100%; }
.z-10 { z-index: 10; }
.z-50 { z-index: 50; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.rounded-full { border-radius: 9999px; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.object-cover { object-fit: cover; }
.whitespace-nowrap { white-space: nowrap; }

/* Text utilities */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-7xl { font-size: 4.5rem; }
.text-8xl { font-size: 6rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-black { font-weight: 900; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }
.uppercase { text-transform: uppercase; }
.leading-relaxed { line-height: 1.625; }
.leading-tight { line-height: 1.25; }

/* Colors */
.text-white { color: #ffffff; }
.text-slate-300 { color: #cbd5e1; }
.text-slate-400 { color: #94a3b8; }
.text-slate-500 { color: #64748b; }
.text-slate-600 { color: #475569; }
.text-slate-700 { color: #334155; }
.text-slate-900 { color: #0f172a; }
.text-indigo-400 { color: #818cf8; }
.text-indigo-500 { color: #6366f1; }
.text-indigo-600 { color: #4f46e5; }
.text-emerald-500 { color: #10b981; }
.text-amber-500 { color: #f59e0b; }
.text-amber-600 { color: #d97706; }
.text-red-500 { color: #ef4444; }
.text-yellow-500 { color: #eab308; }

.bg-white { background: #ffffff; }
.bg-slate-50 { background: #f8fafc; }
.bg-slate-100 { background: #f1f5f9; }
.bg-slate-800 { background: #1e293b; }
.bg-slate-900 { background: #0f172a; }
.bg-indigo-50 { background: #eef2ff; }
.bg-indigo-500 { background: #6366f1; }
.bg-indigo-600 { background: #4f46e5; }
.bg-indigo-900 { background: #312e81; }
.bg-emerald-500 { background: #10b981; }
.bg-amber-50 { background: #fffbeb; }

.border { border-width: 1px; border-style: solid; }
.border-2 { border-width: 2px; }
.border-t { border-top-width: 1px; border-top-style: solid; }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }
.border-white { border-color: #ffffff; }
.border-white\/10 { border-color: rgba(255,255,255,0.1); }
.border-white\/20 { border-color: rgba(255,255,255,0.2); }
.border-white\/30 { border-color: rgba(255,255,255,0.3); }
.border-slate-100 { border-color: #f1f5f9; }
.border-slate-200 { border-color: #e2e8f0; }
.border-indigo-100 { border-color: #e0e7ff; }
.border-indigo-200 { border-color: #c7d2fe; }
.border-indigo-500 { border-color: #6366f1; }
.border-indigo-600 { border-color: #4f46e5; }
.border-amber-200 { border-color: #fde68a; }

.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }

.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-5 > * + * { margin-top: 1.25rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }
.space-y-10 > * + * { margin-top: 2.5rem; }
.space-x-24 > * + * { margin-left: 6rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mb-20 { margin-bottom: 5rem; }
.mb-32 { margin-bottom: 8rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-16 { margin-top: 4rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-8 { padding-top: 2rem; }
.pt-10 { padding-top: 2.5rem; }
.pt-20 { padding-top: 5rem; }
.pt-24 { padding-top: 6rem; }
.pt-28 { padding-top: 7rem; }
.pt-32 { padding-top: 8rem; }
.pb-20 { padding-bottom: 5rem; }
.pb-24 { padding-bottom: 6rem; }
.pb-12 { padding-bottom: 3rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-5 { padding-top: 1.25rem; padding-bottom: 1.25rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 0.5rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-12 { padding: 3rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.pl-10 { padding-left: 2.5rem; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.transition-all { transition: all 0.3s ease; }
.transition-colors { transition: color 0.2s ease; }
.transition-shadow { transition: box-shadow 0.3s ease; }
.transition-transform { transition: transform 0.3s ease; }
.duration-300 { transition-duration: 0.3s; }

.backdrop-blur-md { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.backdrop-blur-sm { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

.select-none { user-select: none; }
.pointer-events-none { pointer-events: none; }
.cursor-default { cursor: default; }

.hover\:text-indigo-400:hover { color: #818cf8; }
.hover\:text-indigo-600:hover { color: #4f46e5; }
.hover\:text-indigo-700:hover { color: #4338ca; }
.hover\:text-indigo-800:hover { color: #3730a3; }
.hover\:text-cyan-400:hover { color: #22d3ee; }
.hover\:bg-indigo-50:hover { background: #eef2ff; }
.hover\:bg-white\/10:hover { background: rgba(255,255,255,0.1); }
.hover\:border-indigo-600:hover { border-color: #4f46e5; }
.hover\:shadow-xl:hover { box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }
.hover\:-translate-y-2:hover { transform: translateY(-0.5rem); }

/* Button gradients */
.btn-gradient {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  border: none;
  cursor: pointer;
}
.btn-gradient:hover {
  background: linear-gradient(135deg, #4338ca, #6d28d9);
}

/* Form inputs */
input, textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: #f8fafc;
  border: 1px solid #f1f5f9;
  border-radius: 0.75rem;
  font-size: 1rem;
  outline: none;
  transition: all 0.2s ease;
  font-family: inherit;
}
input:focus, textarea:focus {
  border-color: #4f46e5;
  box-shadow: 0 0 0 2px rgba(79,70,229,0.2);
}

/* Table styles */
table { border-collapse: collapse; }
th, td { padding: 0.75rem 1rem; text-align: left; }
.divide-y > * + * { border-top: 1px solid #f1f5f9; }

/* Responsive */
@media (min-width: 768px) {
  .md\:flex { display: flex; }
  .md\:hidden { display: none; }
  .md\:col-span-1 { grid-column: span 1; }
  .md\:col-span-2 { grid-column: span 2; }
  .md\:col-span-5 { grid-column: span 5; }
  .md\:col-span-7 { grid-column: span 7; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .md\:grid-cols-12 { grid-template-columns: repeat(12, 1fr); }
  .md\:w-1\/2 { width: 50%; }
  .md\:p-8 { padding: 2rem; }
  .md\:p-20 { padding: 5rem; }
  .md\:m-8 { margin: 2rem; }
  .md\:pt-40 { padding-top: 10rem; }
  .md\:pt-28 { padding-top: 7rem; }
  .md\:pt-48 { padding-top: 12rem; }
  .md\:pb-20 { padding-bottom: 5rem; }
  .md\:pb-32 { padding-bottom: 8rem; }
  .md\:text-5xl { font-size: 3rem; }
  .md\:text-7xl { font-size: 4.5rem; }
  .md\:text-8xl { font-size: 6rem; }
  .md\:order-1 { order: 1; }
  .md\:order-2 { order: 2; }
  .md\:flex-row { flex-direction: row; }
}