*,*::before,*::after{box-sizing:border-box;border-width:0;border-style:solid}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:inherit;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:inherit}
p{margin:0}
a{color:inherit;text-decoration:inherit}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}
img,svg{display:block;max-width:100%}
ul,ol{list-style:none;padding:0;margin:0}
.hidden{display:none}
.block{display:block}
.inline-block{display:inline-block}
.inline-flex{display:inline-flex}
.flex{display:flex}
.flex-col{flex-direction:column}
.grid{display:grid}
.items-center{align-items:center}
.items-start{align-items:flex-start}
.justify-center{justify-content:center}
.justify-between{justify-content:space-between}
.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.gap-2{gap:.5rem}
.gap-3{gap:.75rem}
.gap-4{gap:1rem}
.gap-6{gap:1.5rem}
.gap-8{gap:2rem}
.space-x-6>:not([hidden])~:not([hidden]){margin-left:1.5rem}
.space-y-1\.5>:not([hidden])~:not([hidden]){margin-top:.375rem}
.space-y-3>:not([hidden])~:not([hidden]){margin-top:.75rem}
.w-4{width:1rem}
.w-8{width:2rem}
.w-48{width:12rem}
.h-4{height:1rem}
.h-8{height:2rem}
.h-16{height:4rem}
.h-48{height:12rem}
.max-w-2xl{max-width:42rem}
.max-w-4xl{max-width:56rem}
.max-w-6xl{max-width:72rem}
.p-5{padding:1.25rem}
.p-6{padding:1.5rem}
.px-3{padding-left:.75rem;padding-right:.75rem}
.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}
.py-1{padding-top:.25rem;padding-bottom:.25rem}
.py-1\.5{padding-top:.375rem;padding-bottom:.375rem}
.py-2\.5{padding-top:.625rem;padding-bottom:.625rem}
.py-3{padding-top:.75rem;padding-bottom:.75rem}
.py-8{padding-top:2rem;padding-bottom:2rem}
.py-12{padding-top:3rem;padding-bottom:3rem}
.py-16{padding-top:4rem;padding-bottom:4rem}
.py-20{padding-top:5rem;padding-bottom:5rem}
.pt-32{padding-top:8rem}
.pb-16{padding-bottom:4rem}
.pb-20{padding-bottom:5rem}
.mx-auto{margin-left:auto;margin-right:auto}
.mt-0\.5{margin-top:.125rem}
.mt-1{margin-top:.25rem}
.mt-10{margin-top:2.5rem}
.mb-2{margin-bottom:.5rem}
.mb-3{margin-bottom:.75rem}
.mb-4{margin-bottom:1rem}
.mb-6{margin-bottom:1.5rem}
.mb-8{margin-bottom:2rem}
.mb-10{margin-bottom:2.5rem}
.mb-12{margin-bottom:3rem}
.text-xs{font-size:.75rem}
.text-sm{font-size:.875rem}
.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-bold{font-weight:700}
.font-black{font-weight:900}
.font-mono{font-family:ui-monospace,monospace}
.leading-tight{line-height:1.25}
.text-center{text-align:center}
.text-white{color:#fff}
.text-gray-400{color:#9ca3af}
.text-gray-500{color:#6b7280}
.text-gray-600{color:#4b5563}
.text-gray-700{color:#374151}
.text-gray-800{color:#1f2937}
.text-gray-900{color:#111827}
.text-blue-500{color:#3b82f6}
.text-blue-600{color:#2563eb}
.text-blue-700{color:#1d4ed8}
.text-green-500{color:#22c55e}
.text-green-600{color:#16a34a}
.text-green-700{color:#15803d}
.text-purple-500{color:#a855f7}
.text-purple-600{color:#9333ea}
.text-purple-700{color:#7e22ce}
.bg-white{background-color:#fff}
.bg-gray-50{background-color:#f9fafb}
.bg-blue-50{background-color:#eff6ff}
.bg-blue-100{background-color:#dbeafe}
.bg-green-50{background-color:#f0fdf4}
.bg-green-100{background-color:#dcfce7}
.bg-purple-50{background-color:#faf5ff}
.bg-purple-100{background-color:#f3e8ff}
.bg-gradient-to-r{background-image:linear-gradient(to right,var(--tw-gradient-stops))}
.from-purple-600{--tw-gradient-from:#9333ea;--tw-gradient-stops:var(--tw-gradient-from),var(--tw-gradient-to,rgb(147 51 234/0))}
.from-green-500{--tw-gradient-from:#22c55e;--tw-gradient-stops:var(--tw-gradient-from),var(--tw-gradient-to,rgb(34 197 94/0))}
.to-indigo-600{--tw-gradient-to:#4f46e5}
.to-green-600{--tw-gradient-to:#16a34a}
.border{border-width:1px}
.border-b{border-bottom-width:1px}
.border-t{border-top-width:1px}
.border-gray-100{border-color:#f3f4f6}
.border-gray-200{border-color:#e5e7eb}
.rounded-lg{border-radius:.5rem}
.rounded-xl{border-radius:.75rem}
.rounded-2xl{border-radius:1rem}
.rounded-full{border-radius:9999px}
.fixed{position:fixed}
.sticky{position:sticky}
.top-0{top:0}
.left-0{left:0}
.right-0{right:0}
.bottom-0{bottom:0}
.z-50{z-index:50}
.overflow-hidden{overflow:hidden}
.shadow-sm{box-shadow:0 1px 2px 0 rgb(0 0 0/.05)}
.transition{transition:all .2s}
.hover\:text-gray-900:hover{color:#111827}
.hover\:text-purple-600:hover{color:#9333ea}
.hover\:border-gray-400:hover{border-color:#9ca3af}
.hover\:border-purple-400:hover{border-color:#c084fc}
.hover\:opacity-90:hover{opacity:.9}
.backdrop-blur-md{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.bg-white\/90{background-color:rgb(255 255 255/.9)}
.gradient-text{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.card-hover{transition:all .3s ease}
.card-hover:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.1)}
.fade-in{animation:fadeIn .6s ease-out}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.toc-link{transition:color .2s}
.toc-link:hover{color:#667eea}
.wechat-float{position:fixed;bottom:24px;right:24px;z-index:1000;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#07c160,#06ad56);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px rgba(7,193,96,.4);transition:transform .2s}
.wechat-float:hover{transform:scale(1.1)}
.wechat-float svg{width:28px;height:28px;fill:#fff}
.wechat-modal{position:fixed;inset:0;z-index:1001;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s}
.wechat-modal.active{opacity:1;pointer-events:auto}
.wechat-modal-content{background:#fff;border-radius:16px;padding:24px;text-align:center;max-width:320px;width:90%;position:relative}
.wechat-modal-close{position:absolute;top:8px;right:12px;font-size:24px;cursor:pointer;color:#999;background:none;border:none}
@media(min-width:640px){.sm\:block{display:block}.sm\:flex-row{flex-direction:row}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:text-5xl{font-size:3rem}.sm\:text-xl{font-size:1.25rem}}
@media(min-width:768px){.md\:flex{display:flex}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:p-8{padding:2rem}}
@media(min-width:1024px){.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:px-8{padding-left:2rem;padding-right:2rem}.lg\:text-6xl{font-size:3.75rem}}