/*!
 * 本地静态 Tailwind 子集（Tailwind CSS v3 preflight + 站点实际用到的工具类）
 * 目的：替换 cdn.tailwindcss.com 运行时编译脚本，去掉阻塞渲染的 100+KB JS 与运行时开销。
 * 仅包含 index/download/pricing/about/privacy/disclaimer 六个页面里出现的类。
 * 新增 Tailwind 类时需要在此文件补充对应规则。
 */

/* ---------- preflight（Tailwind v3 基础重置） ---------- */
*,::before,::after{box-sizing:border-box;border-width:0;border-style:solid;border-color:currentColor}
::before,::after{--tw-content:''}
html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}
body{margin:0;line-height:inherit}
hr{height:0;color:inherit;border-top-width:1px}
abbr:where([title]){text-decoration:underline dotted}
h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}
a{color:inherit;text-decoration:inherit}
b,strong{font-weight:bolder}
small{font-size:80%}
sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
sub{bottom:-.25em}
sup{top:-.5em}
table{text-indent:0;border-color:inherit;border-collapse:collapse}
button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;font-weight:inherit;line-height:inherit;color:inherit;margin:0;padding:0}
button,select{text-transform:none}
button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button;background-color:transparent;background-image:none}
:-moz-focusring{outline:auto}
:-moz-ui-invalid{box-shadow:none}
progress{vertical-align:baseline}
::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}
[type=search]{-webkit-appearance:textfield;outline-offset:-2px}
::-webkit-search-decoration{-webkit-appearance:none}
::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}
summary{display:list-item}
blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}
fieldset{margin:0;padding:0}
legend{padding:0}
ol,ul,menu{list-style:none;margin:0;padding:0}
textarea{resize:vertical}
input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}
button,[role=button]{cursor:pointer}
:disabled{cursor:default}
img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}
img,video{max-width:100%;height:auto}
[hidden]{display:none}

/* ---------- 布局 ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}
.sticky{position:sticky}
.top-0{top:0}
.z-50{z-index:50}
.flex{display:flex}
.inline-flex{display:inline-flex}
.grid{display:grid}
.flex-col{flex-direction:column}
.flex-wrap{flex-wrap:wrap}
.shrink-0{flex-shrink:0}
.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}
.grid-cols-\[1fr_auto_1fr\]{grid-template-columns:1fr auto 1fr}
.items-center{align-items:center}
.items-start{align-items:flex-start}
.justify-center{justify-content:center}
.justify-self-start{justify-self:start}
.justify-self-end{justify-self:end}
.object-contain{object-fit:contain}
.min-h-screen{min-height:100vh}

/* ---------- 间距 ---------- */
.mx-auto{margin-left:auto;margin-right:auto}
.mt-1{margin-top:.25rem}
.mt-2{margin-top:.5rem}
.mt-3{margin-top:.75rem}
.mt-5{margin-top:1.25rem}
.mt-8{margin-top:2rem}
.mt-10{margin-top:2.5rem}
.p-6{padding:1.5rem}
.px-3{padding-left:.75rem;padding-right:.75rem}
.px-4{padding-left:1rem;padding-right:1rem}
.py-2{padding-top:.5rem;padding-bottom:.5rem}
.py-3{padding-top:.75rem;padding-bottom:.75rem}
.py-10{padding-top:2.5rem;padding-bottom:2.5rem}
.pt-6{padding-top:1.5rem}
.gap-1{gap:.25rem}
.gap-2{gap:.5rem}
.gap-3{gap:.75rem}
.gap-4{gap:1rem}
.gap-6{gap:1.5rem}
.gap-8{gap:2rem}
.gap-x-6{column-gap:1.5rem}
.gap-y-2{row-gap:.5rem}
.space-y-2>:not([hidden])~:not([hidden]){margin-top:.5rem}

/* ---------- 尺寸 ---------- */
.h-10{height:2.5rem}
.w-10{width:2.5rem}
.max-w-md{max-width:28rem}
.max-w-\[1400px\]{max-width:1400px}

/* ---------- 边框 / 圆角 / 阴影 ---------- */
.border{border-width:1px}
.border-t{border-top-width:1px}
.border-b{border-bottom-width:1px}
.border-blue-200{border-color:#bfdbfe}
.border-slate-200{border-color:#e2e8f0}
.border-slate-200\/80{border-color:rgb(226 232 240/.8)}
.rounded-md{border-radius:.375rem}
.rounded-lg{border-radius:.5rem}
.rounded-2xl{border-radius:1rem}
.shadow-sm{box-shadow:0 1px 2px 0 rgb(0 0 0/.05)}

/* ---------- 背景 ---------- */
.bg-white{background-color:#fff}
.bg-white\/95{background-color:rgb(255 255 255/.95)}
.bg-slate-50{background-color:#f8fafc}
.bg-blue-700{background-color:#1d4ed8}
.backdrop-blur{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}

/* ---------- 文字 ---------- */
.text-xs{font-size:.75rem;line-height:1rem}
.text-sm{font-size:.875rem;line-height:1.25rem}
.text-base{font-size:1rem;line-height:1.5rem}
.text-3xl{font-size:1.875rem;line-height:2.25rem}
.font-medium{font-weight:500}
.font-semibold{font-weight:600}
.font-bold{font-weight:700}
.leading-relaxed{line-height:1.625}
.tracking-tight{letter-spacing:-.025em}
.not-italic{font-style:normal}
.no-underline{text-decoration-line:none}
.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
.text-white{color:#fff}
.text-slate-500{color:#64748b}
.text-slate-600{color:#475569}
.text-slate-800{color:#1e293b}
.text-slate-900{color:#0f172a}
.text-blue-600{color:#2563eb}

/* ---------- 过渡 ---------- */
.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,-webkit-backdrop-filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}

/* ---------- 状态变体 ---------- */
.hover\:bg-blue-800:hover{background-color:#1e40af}
.hover\:bg-slate-100:hover{background-color:#f1f5f9}
.hover\:text-blue-600:hover{color:#2563eb}
.hover\:text-blue-700:hover{color:#1d4ed8}
.hover\:text-slate-900:hover{color:#0f172a}
.focus-visible\:outline:focus-visible{outline-style:solid}
.focus-visible\:outline-2:focus-visible{outline-width:2px}
.focus-visible\:outline-offset-2:focus-visible{outline-offset:2px}
.focus-visible\:outline-blue-700:focus-visible{outline-color:#1d4ed8}

/* ---------- 响应式变体 ---------- */
@media (min-width:640px){
.sm\:gap-3{gap:.75rem}
.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}
.sm\:text-lg{font-size:1.125rem;line-height:1.75rem}
}
@media (min-width:768px){
.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
.lg\:flex-row{flex-direction:row}
.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.lg\:items-start{align-items:flex-start}
.lg\:justify-between{justify-content:space-between}
.lg\:px-8{padding-left:2rem;padding-right:2rem}
}

/* ---------- 能力查询变体 ---------- */
@supports (backdrop-filter:var(--tw)){
.supports-\[backdrop-filter\]\:bg-white\/80{background-color:rgb(255 255 255/.8)}
}