body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}
.accordion-content {
    transition: max-height 0.3s ease-in-out, padding 0.3s ease, opacity 0.3s ease;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
}
.accordion-content.open { max-height: 500px; opacity: 1; }
.hero-gradient { background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
* { box-sizing: border-box; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-grow { flex-grow: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-baseline { align-items: baseline; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.inline-flex { display: inline-flex; }
.inline-block { display: inline-block; }
.block { display: block; }
.hidden { display: none; }
.grid { display: grid; }
.fixed { position: fixed; }
.relative { position: relative; }
.absolute { position: absolute; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.w-full { width: 100%; }
.min-h-screen { min-height: 100vh; }
.h-16 { height: 4rem; }
.h-8 { height: 2rem; }
.h-6 { height: 1.5rem; }
.h-5 { height: 1.25rem; }
.h-10 { height: 2.5rem; }
.h-12 { height: 3rem; }
.w-auto { width: auto; }
.w-5 { width: 1.25rem; }
.w-6 { width: 1.5rem; }
.w-8 { width: 2rem; }
.w-10 { width: 2.5rem; }
.w-12 { width: 3rem; }
.w-16 { width: 4rem; }
.z-50 { z-index: 50; }
.max-w-7xl { max-width: 80rem; margin-left: auto; margin-right: auto; }
.max-w-5xl { max-width: 64rem; margin-left: auto; margin-right: auto; }
.max-w-4xl { max-width: 56rem; margin-left: auto; margin-right: auto; }
.max-w-3xl { max-width: 48rem; margin-left: auto; margin-right: auto; }
.max-w-xl { max-width: 36rem; }
.max-w-md { max-width: 28rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.px-3 { padding-left: .75rem; padding-right: .75rem; }
.px-2 { padding-left: .5rem; padding-right: .5rem; }
.py-1 { padding-top: .25rem; padding-bottom: .25rem; }
.py-2 { padding-top: .5rem; padding-bottom: .5rem; }
.py-3 { padding-top: .75rem; padding-bottom: .75rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.p-2 { padding: .5rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.pt-1 { padding-top: .25rem; }
.pt-2 { padding-top: .5rem; }
.pt-8 { padding-top: 2rem; }
.pt-16 { padding-top: 4rem; }
.pb-3 { padding-bottom: .75rem; }
.pb-4 { padding-bottom: 1rem; }
.pl-3 { padding-left: .75rem; }
.pr-4 { padding-right: 1rem; }
.pl-5 { padding-left: 1.25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: .75rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mb-2 { margin-bottom: .5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.ml-1 { margin-left: .25rem; }
.ml-2 { margin-left: .5rem; }
.ml-3 { margin-left: .75rem; }
.ml-6 { margin-left: 1.5rem; }
.mr-1 { margin-right: .25rem; }
.mr-2 { margin-right: .5rem; }
.space-x-6 > * + * { margin-left: 1.5rem; }
.space-x-8 > * + * { margin-left: 2rem; }
.space-y-1 > * + * { margin-top: .25rem; }
.space-y-2 > * + * { margin-top: .5rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: 1fr 1fr; }
.col-span-1 { grid-column: auto; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-xs { font-size: .75rem; }
.text-sm { font-size: .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; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.tracking-tight { letter-spacing: -.025em; }
.leading-relaxed { line-height: 1.7; }
.bg-white { background: #fff; }
.bg-gray-50 { background: #f9fafb; }
.bg-gray-100 { background: #f3f4f6; }
.bg-gray-800 { background: #1f2937; }
.bg-gray-900 { background: #111827; }
.bg-blue-50 { background: #eff6ff; }
.bg-blue-100 { background: #dbeafe; }
.bg-blue-600 { background: #2563EB; }
.bg-green-50 { background: #f0fdf4; }
.bg-green-100 { background: #dcfce7; }
.bg-pink-100 { background: #fce7f3; }
.bg-purple-50 { background: #faf5ff; }
.bg-purple-100 { background: #f3e8ff; }
.bg-yellow-400 { background: #facc15; }
.text-white { color: #fff; }
.text-gray-300 { color: #d1d5db; }
.text-gray-400 { color: #9ca3af; }
.text-gray-500 { color: #6b7280; }
.text-gray-600 { color: #4b5563; }
.text-gray-800 { color: #1f2937; }
.text-gray-900 { color: #111827; }
.text-blue-200 { color: #bfdbfe; }
.text-blue-300 { color: #93c5fd; }
.text-blue-600 { color: #2563EB; }
.text-blue-700 { color: #1D4ED8; }
.text-blue-800 { color: #1e40af; }
.text-green-500 { color: #22c55e; }
.text-green-600 { color: #16a34a; }
.text-pink-700 { color: #be185d; }
.text-purple-600 { color: #9333ea; }
.text-yellow-400 { color: #facc15; }
.text-yellow-900 { color: #713f12; }
.border { border: 1px solid #e5e7eb; }
.border-t { border-top: 1px solid #e5e7eb; }
.border-b { border-bottom: 1px solid #e5e7eb; }
.border-b-2 { border-bottom-width: 2px; border-bottom-style: solid; }
.border-l-4 { border-left: 4px solid; }
.border-transparent { border-color: transparent; }
.border-gray-100 { border-color: #f3f4f6; }
.border-gray-200 { border-color: #e5e7eb; }
.border-gray-800 { border-color: #1f2937; }
.border-blue-200 { border-color: #bfdbfe; }
.border-blue-600 { border-color: #2563EB; }
.rounded-md { border-radius: .375rem; }
.rounded-lg { border-radius: .5rem; }
.rounded-xl { border-radius: .75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }
.rounded-bl-lg { border-bottom-left-radius: .5rem; }
.rounded-tr-lg { border-top-right-radius: .5rem; }
.shadow-sm { box-shadow: 0 1px 2px rgba(0,0,0,.05); }
.shadow { box-shadow: 0 1px 3px rgba(0,0,0,.1); }
.shadow-lg { box-shadow: 0 10px 15px rgba(0,0,0,.1); }
.shadow-xl { box-shadow: 0 20px 25px rgba(0,0,0,.1); }
.overflow-hidden { overflow: hidden; }
.object-cover { object-fit: cover; }
.filter { filter: grayscale(1); }
.grayscale { filter: grayscale(1); }
.opacity-80 { opacity: .8; }
.list-decimal { list-style: decimal; }
.transition, .transition-colors, .transition-transform { transition: .2s ease; }
.hover\:text-gray-900:hover { color: #111827; }
.hover\:text-white:hover { color: #fff; }
.hover\:bg-blue-700:hover { background: #1D4ED8; }
.hover\:bg-blue-100:hover { background: #dbeafe; }
.hover\:bg-gray-50:hover { background: #f9fafb; }
.hover\:bg-gray-100:hover { background: #f3f4f6; }
.hover\:bg-gray-900:hover { background: #111827; }
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px rgba(0,0,0,.1); }
.hover\:shadow-md:hover { box-shadow: 0 4px 6px rgba(0,0,0,.08); }
.line-through { text-decoration: line-through; }
.mt-auto { margin-top: auto; }
.transform { transform: translateZ(0); }

@media (min-width: 640px) {
    .sm\:flex { display: flex; }
    .sm\:hidden { display: none; }
    .sm\:ml-10 { margin-left: 2.5rem; }
    .sm\:w-auto { width: auto; }
    .sm\:text-lg { font-size: 1.125rem; }
    .sm\:text-5xl { font-size: 3rem; }
    .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: 1fr 1fr; }
    .md\:grid-cols-3 { grid-template-columns: 1fr 1fr 1fr; }
    .md\:grid-cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
    .md\:flex-row { flex-direction: row; }
    .md\:col-span-1 { grid-column: auto; }
    .md\:text-xl { font-size: 1.25rem; }
    .md\:text-6xl { font-size: 3.75rem; }
    .md\:mt-0 { margin-top: 0; }
    .md\:mt-5 { margin-top: 1.25rem; }
    .md\:max-w-3xl { max-width: 48rem; }
    .md\:-translate-y-4 { transform: translateY(-1rem); }
}
@media (min-width: 1024px) {
    .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
    .lg\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
    .lg\:grid-cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
}