/* =====================================================
   卓越地推 — 自定义精简样式表 (~15KB)
   替代 Tailwind CDN (2.9MB) 性能提升 99%+
   ===================================================== */

/* ── 颜色变量 ─────────────────────────────────── */
:root {
  --orange: #F97316;
  --orange-dark: #EA580C;
  --orange-light: #FFEDD5;
  --orange-500: #F97316;
  --orange-600: #EA580C;
  --orange-100: #FFEDD5;
  --orange-50: #FFF7ED;
  --green-600: #16A34A;
  --green-500: #22C55E;
  --green-400: #4ADE80;
  --green-100: #DCFCE7;
  --green-50: #F0FDF4;
  --blue-600: #2563EB;
  --blue-500: #3B82F6;
  --blue-400: #60A5FA;
  --blue-100: #DBEAFE;
  --blue-50: #EFF6FF;
  --purple-600: #9333EA;
  --purple-500: #A855F7;
  --purple-400: #C084FC;
  --purple-100: #EDE9FE;
  --purple-50: #FAF5FF;
  --yellow-600: #D97706;
  --yellow-500: #F59E0B;
  --yellow-400: #FBBF24;
  --yellow-100: #FEF3C7;
  --yellow-50: #FFFBEB;
  --red-100: #FEE2E2;
  --red-50: #FEF2F2;
  --pink-50: #FDF2F8;
  --gray-900: #111827;
  --gray-800: #1F2937;
  --gray-700: #374151;
  --gray-600: #4B5563;
  --gray-500: #6B7280;
  --gray-400: #9CA3AF;
  --gray-300: #D1D5DB;
  --gray-200: #E5E7EB;
  --gray-100: #F3F4F6;
  --gray-50: #F9FAFB;
  --black: #000;
  --white: #fff;
  --sp-1: 0.25rem; --sp-2: 0.5rem; --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.25rem; --sp-6: 1.5rem; --sp-8: 2rem; --sp-10: 2.5rem;
  --sp-12: 3rem; --sp-16: 4rem; --sp-20: 5rem; --sp-24: 6rem;
  --sp-32: 8rem;
}

/* ── 重置 ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

/* ── 通用工具类 ───────────────────────────────── */

/* 布局 */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.hidden { display: none; }

/* flex 方向 */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }

/* flex 换行 */
.flex-wrap { flex-wrap: wrap; }

/* justify */
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

/* items */
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

/* gap */
.gap-1 { gap: var(--sp-1); }
.gap-4 { gap: var(--sp-4); }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: var(--sp-6); }
.gap-8 { gap: var(--sp-8); }

/* grid cols */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

/* 定位 */
.fixed { position: fixed; }
.absolute { position: absolute; }
.relative { position: relative; }
.sticky { position: sticky; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.inset-y-0 { top: 0; bottom: 0; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

/* 层级 */
.z-50 { z-index: 50; }
.z-\[55\] { z-index: 55; }
.z-\[60\] { z-index: 60; }

/* 尺寸 */
.w-full { width: 100%; }
.h-full { height: 100%; }
.max-w-7xl { max-width: 80rem; }

/* margin */
.mx-auto { margin-left: auto; margin-right: auto; }
.my-4 { margin-top: 1rem; margin-bottom: 1rem; }
.my-6 { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.mt-1 { margin-top: var(--sp-1); }
.mt-2 { margin-top: var(--sp-2); }
.mt-3 { margin-top: var(--sp-3); }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mt-8 { margin-top: var(--sp-8); }
.mt-10 { margin-top: var(--sp-10); }
.mt-12 { margin-top: var(--sp-12); }
.mt-16 { margin-top: var(--sp-16); }
.mb-1 { margin-bottom: var(--sp-1); }
.mb-2 { margin-bottom: var(--sp-2); }
.mb-3 { margin-bottom: var(--sp-3); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }
.mb-10 { margin-bottom: var(--sp-10); }
.mb-12 { margin-bottom: var(--sp-12); }
.ml-1 { margin-left: var(--sp-1); }
.ml-2 { margin-left: var(--sp-2); }
.mr-1 { margin-left: var(--sp-1); }
.mr-2 { margin-left: var(--sp-2); }

/* padding */
.p-3 { padding: var(--sp-3); }
.p-5 { padding: 1.25rem; }
.p-6 { padding: var(--sp-6); }
.p-8 { padding: var(--sp-8); }
.p-10 { padding: var(--sp-10); }
.px-2 { padding-left: var(--sp-2); padding-right: var(--sp-2); }
.px-4 { padding-left: var(--sp-4); padding-right: var(--sp-4); }
.px-6 { padding-left: var(--sp-6); padding-right: var(--sp-6); }
.py-2 { padding-top: var(--sp-2); padding-bottom: var(--sp-2); }
.py-4 { padding-top: var(--sp-4); padding-bottom: var(--sp-4); }
.py-6 { padding-top: var(--sp-6); padding-bottom: var(--sp-6); }
.py-8 { padding-top: var(--sp-8); padding-bottom: var(--sp-8); }
.py-12 { padding-top: var(--sp-12); padding-bottom: var(--sp-12); }
.py-16 { padding-top: var(--sp-16); padding-bottom: var(--sp-16); }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.pt-32 { padding-top: 8rem; }
.pt-36 { padding-top: 9rem; }
.pb-2 { padding-bottom: var(--sp-2); }
.pb-4 { padding-bottom: var(--sp-4); }
.pb-6 { padding-bottom: var(--sp-6); }
.pb-8 { padding-bottom: var(--sp-8); }
.pb-12 { padding-bottom: var(--sp-12); }
.pb-16 { padding-bottom: var(--sp-16); }
.pb-20 { padding-bottom: 5rem; }

/* space-y */
.space-y-1 > * + * { margin-top: var(--sp-1); }
.space-y-2 > * + * { margin-top: var(--sp-2); }
.space-y-3 > * + * { margin-top: var(--sp-3); }
.space-y-4 > * + * { margin-top: var(--sp-4); }
.space-y-6 > * + * { margin-top: var(--sp-6); }
.space-y-8 > * + * { margin-top: var(--sp-8); }
.space-x-3 > * + * { margin-left: var(--sp-3); }
.space-x-4 > * + * { margin-left: var(--sp-4); }
.space-x-6 > * + * { margin-left: var(--sp-6); }
.space-x-8 > * + * { margin-left: var(--sp-8); }

/* 圆角 */
.rounded-sm { border-radius: 0.125rem; }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }
.rounded-t-xl { border-top-left-radius: 0.75rem; border-top-right-radius: 0.75rem; }

/* 边框 */
.border { border-width: 1px; border-style: solid; }
.border-0 { border-width: 0; }
.border-2 { border-width: 2px; }
.border-gray-100 { border-color: var(--gray-100); }
.border-gray-200 { border-color: var(--gray-200); }
.border-orange-400 { border-color: var(--orange-400); }
.border-transparent { border-color: transparent; }
.border-b { border-bottom: 1px solid var(--gray-200); }

/* 阴影 */
.shadow { box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06); }
.shadow-sm { box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
.shadow-md { box-shadow: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06); }
.shadow-lg { box-shadow: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05); }
.shadow-xl { box-shadow: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04); }
.shadow-2xl { box-shadow: 0 25px 50px rgba(0,0,0,0.25); }
.shadow-none { box-shadow: none; }

/* 文字 */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.text-7xl { font-size: 4.5rem; line-height: 1; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.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; }

.leading-none { line-height: 1; }
.leading-tight { line-height: 1.25; }
.leading-snug { line-height: 1.375; }
.leading-relaxed { line-height: 1.625; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }

.whitespace-nowrap { white-space: nowrap; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }

/* 文字颜色 */
.text-white { color: var(--white); }
.text-black { color: var(--black); }
.text-gray-50 { color: var(--gray-50); }
.text-gray-100 { color: var(--gray-100); }
.text-gray-200 { color: var(--gray-200); }
.text-gray-300 { color: var(--gray-300); }
.text-gray-400 { color: var(--gray-400); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-800 { color: var(--gray-800); }
.text-gray-900 { color: var(--gray-900); }
.text-orange-400 { color: #FB923C; }
.text-orange-500 { color: var(--orange-500); }
.text-orange-600 { color: var(--orange-600); }
.text-orange-700 { color: #C2410C; }
.text-orange-800 { color: #9A3412; }
.text-yellow-400 { color: var(--yellow-400); }
.text-yellow-500 { color: var(--yellow-500); }
.text-yellow-600 { color: var(--yellow-600); }
.text-green-400 { color: var(--green-400); }
.text-green-500 { color: var(--green-500); }
.text-green-600 { color: var(--green-600); }
.text-blue-400 { color: var(--blue-400); }
.text-blue-500 { color: var(--blue-500); }
.text-blue-600 { color: var(--blue-600); }
.text-blue-700 { color: #1D4ED8; }
.text-purple-500 { color: var(--purple-500); }
.text-purple-600 { color: var(--purple-600); }
.text-red-500 { color: #EF4444; }
.text-red-600 { color: #DC2626; }
.text-pink-600 { color: #DB2777; }

/* 背景色 */
.bg-white { background-color: var(--white); }
.bg-black { background-color: var(--black); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-gray-100 { background-color: var(--gray-100); }
.bg-gray-200 { background-color: var(--gray-200); }
.bg-gray-800 { background-color: var(--gray-800); }
.bg-orange-50 { background-color: var(--orange-50); }
.bg-orange-100 { background-color: var(--orange-100); }
.bg-orange-400 { background-color: #FB923C; }
.bg-orange-500 { background-color: var(--orange-500); }
.bg-orange-600 { background-color: var(--orange-600); }
.bg-orange-700 { background-color: #C2410C; }
.bg-yellow-50 { background-color: var(--yellow-50); }
.bg-yellow-100 { background-color: var(--yellow-100); }
.bg-yellow-400 { background-color: var(--yellow-400); }
.bg-yellow-500 { background-color: var(--yellow-500); }
.bg-yellow-600 { background-color: var(--yellow-600); }
.bg-green-50 { background-color: var(--green-50); }
.bg-green-100 { background-color: var(--green-100); }
.bg-blue-50 { background-color: var(--blue-50); }
.bg-blue-100 { background-color: var(--blue-100); }
.bg-blue-500 { background-color: var(--blue-500); }
.bg-blue-600 { background-color: var(--blue-600); }
.bg-blue-700 { background-color: #1D4ED8; }
.bg-purple-50 { background-color: var(--purple-50); }
.bg-purple-100 { background-color: var(--purple-100); }
.bg-purple-500 { background-color: var(--purple-500); }
.bg-purple-600 { background-color: var(--purple-600); }
.bg-red-50 { background-color: var(--red-50); }
.bg-red-100 { background-color: var(--red-100); }
.bg-pink-50 { background-color: var(--pink-50); }
.bg-transparent { background-color: transparent; }

/* 透明度背景 */
.bg-black\/40 { background-color: rgba(0,0,0,0.4); }
.bg-black\/50 { background-color: rgba(0,0,0,0.5); }
.bg-white\/40 { background-color: rgba(255,255,255,0.4); }
.bg-white\/50 { background-color: rgba(255,255,255,0.5); }
.bg-white\/60 { background-color: rgba(255,255,255,0.6); }
.bg-white\/70 { background-color: rgba(255,255,255,0.7); }
.bg-white\/80 { background-color: rgba(255,255,255,0.8); }
.bg-white\/90 { background-color: rgba(255,255,255,0.9); }
.bg-white\/92 { background-color: rgba(255,255,255,0.92); }
.bg-white\/95 { background-color: rgba(255,255,255,0.95); }
.bg-gray-900\/90 { background-color: rgba(17,24,39,0.9); }
.bg-gray-900\/95 { background-color: rgba(17,24,39,0.95); }
.bg-slate-900\/95 { background-color: rgba(15,23,42,0.95); }

/* 渐变 */
.bg-gradient-to-br {
  background-image: linear-gradient(to bottom right, var(--orange-500), var(--orange-600));
}
.bg-gradient-to-r {
  background-image: linear-gradient(to right, var(--orange-500), var(--orange-600));
}
.bg-gradient-to-b {
  background-image: linear-gradient(to bottom, transparent, rgba(0,0,0,0.6));
}
.from-orange-500 { --g-from: var(--orange-500); }
.from-yellow-400 { --g-from: var(--yellow-400); }
.from-blue-600 { --g-from: var(--blue-600); }
.from-purple-600 { --g-from: var(--purple-600); }
.to-orange-600 { --g-to: var(--orange-600); }
.to-yellow-500 { --g-to: var(--yellow-500); }
.to-blue-700 { --g-to: var(--blue-700); }
.to-purple-700 { --g-to: #7E22CE; }

/* hover */
.hover\:text-orange-600:hover { color: var(--orange-600); }
.hover\:text-orange-700:hover { color: #C2410C; }
.hover\:text-gray-700:hover { color: var(--gray-700); }
.hover\:text-gray-800:hover { color: var(--gray-800); }
.hover\:text-gray-900:hover { color: var(--gray-900); }
.hover\:text-yellow-400:hover { color: var(--yellow-400); }
.hover\:text-white:hover { color: var(--white); }
.hover\:bg-orange-50:hover { background-color: var(--orange-50); }
.hover\:bg-orange-100:hover { background-color: var(--orange-100); }
.hover\:bg-yellow-50:hover { background-color: var(--yellow-50); }
.hover\:bg-gray-50:hover { background-color: var(--gray-50); }
.hover\:bg-gray-100:hover { background-color: var(--gray-100); }
.hover\:bg-white:hover { background-color: var(--white); }
.hover\:from-orange-600:hover { --g-from: var(--orange-600); }
.hover\:to-orange-700:hover { --g-to: #C2410C; }
.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:scale-\[1\.02\]:hover { transform: scale(1.02); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }
.hover\:-translate-y-2:hover { transform: translateY(-0.5rem); }
.hover\:shadow-md:hover { box-shadow: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06); }
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05); }
.hover\:shadow-xl:hover { box-shadow: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04); }
.hover\:border-orange-400:hover { border-color: #FB923C; }
.hover\:border-orange-500:hover { border-color: var(--orange-500); }
.hover\:border-orange-600:hover { border-color: var(--orange-600); }
.hover\:text-decoration-none:hover { text-decoration: none; }

/* transition */
.transition { transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 300ms; }
.transition-shadow { transition-property: box-shadow; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-transform { transition-property: transform; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }
.ease-in-out { transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); }

/* 动画 */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fade-up 0.6s ease-out both; }
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.fade-in { animation: fade-in 0.4s ease-out both; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.float { animation: float 3s ease-in-out infinite; }
.delay-1000 { animation-delay: 1000ms; }

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}
.pulse-ring { animation: pulse-ring 2s ease-out infinite; }

/* 媒体查询 */
@media (min-width: 768px) {
  .md\:flex { display: flex; }
  .md\:inline-flex { display: inline-flex; }
  .md\:grid { display: grid; }
  .md\:hidden { display: none; }
  .md\:block { display: block; }
  .md\:flex-row { flex-direction: row; }
  .md\:flex-col { flex-direction: column; }
  .md\:items-center { align-items: center; }
  .md\:items-start { align-items: flex-start; }
  .md\:justify-between { justify-content: space-between; }
  .md\:justify-center { justify-content: center; }
  .md\:gap-4 { gap: var(--sp-4); }
  .md\:gap-6 { gap: var(--sp-6); }
  .md\:gap-8 { gap: var(--sp-8); }
  .md\:space-x-6 > * + * { margin-left: var(--sp-6); }
  .md\:space-x-8 > * + * { margin-left: var(--sp-8); }
  .md\:text-left { text-align: left; }
  .md\:text-center { text-align: center; }
  .md\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
  .md\:text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
  .md\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .md\:text-5xl { font-size: 3rem; line-height: 1; }
  .md\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .md\:text-7xl { font-size: 4.5rem; line-height: 1; }
  .md\:w-auto { width: auto; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .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\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .md\:p-8 { padding: var(--sp-8); }
  .md\:py-12 { padding-top: var(--sp-12); padding-bottom: var(--sp-12); }
  .md\:py-16 { padding-top: var(--sp-16); padding-bottom: var(--sp-16); }
  .md\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .md\:mt-0 { margin-top: 0; }
  .md\:mb-0 { margin-bottom: 0; }
  .md\:pb-0 { padding-bottom: 0; }
  .md\:static { position: static; }
}

/* 滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--orange-500); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--orange-600); }