/**
 * Ziyoukan Pro — Tailwind 工具类替代样式表
 * 
 * 精准覆盖主题模板中实际使用的所有 Tailwind 工具类
 * 与 style.css 组件级样式协同工作
 * 
 * 生成时间: 2026-06-20
 * 覆盖范围: front-page.php, content-case.php, content-post.php, header.php, footer.php
 */

/* ==========================================
   1. 基础重置与盒模型
   ========================================== */
*, *::before, *::after { box-sizing: border-box; }

/* ==========================================
   2. Display（显示模式）
   ========================================== */
.block    { display: block; }
.inline-block { display: inline-block; }
.inline   { display: inline; }
.flex     { display: flex; }
.inline-flex { display: inline-flex; }
.grid     { display: grid; }
.hidden    { display: none !important; }
.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;
}

/* ==========================================
   3. Flexbox（弹性布局）
   ========================================== */
/* 方向 */
.flex-row       { flex-direction: row; }
.flex-col       { flex-direction: column; }
.flex-wrap      { flex-wrap: wrap; }
.flex-nowrap    { flex-wrap: nowrap; }

/* 主轴对齐 */
.justify-start   { justify-content: flex-start; }
.justify-center  { justify-content: center; }
.justify-end     { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around  { justify-content: space-around; }
.justify-evenly  { justify-content: space-evenly; }

/* 交叉轴对齐 */
.items-start    { align-items: flex-start; }
.items-center   { align-items: center; }
.items-end      { align-items: flex-end; }
.items-stretch  { align-items: stretch; }
.items-baseline { align-items: baseline; }

/* 自身对齐 */
.self-start  { align-self: flex-start; }
.self-center { align-self: center; }
.self-end   { align-self: flex-end; }
.self-stretch { align-self: stretch; }

/* Flex 收缩/增长 */
.flex-1   { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-initial { flex: 0 1 auto; }
.flex-none { flex: none; }
.flex-shrink-0 { flex-shrink: 0; }
.grow    { flex-grow: 1; }
.grow-0  { flex-grow: 0; }

/* ==========================================
   4. Grid（网格布局）
   ========================================== */
.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-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

/* 列跨度（Grid Column Span） */
.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-full { grid-column: 1 / -1; }

/* 行跨度 */
.row-span-1 { grid-row: span 2 / span 3; }
.row-span-2 { grid-row: span 2 / span 3; }
.row-span-full { grid-row: 1 / -1; }

/* ==========================================
   5. Spacing — Padding（内边距）
   ========================================== */
.p-0   { padding: 0; }
.p-1   { padding: 0.25rem; }
.p-2   { padding: 0.5rem; }
.p-3   { padding: 0.75rem; }
.p-4   { padding: 1rem; }
.p-5   { padding: 1.25rem; }
.p-6   { padding: 1.5rem; }
.p-8   { padding: 2rem; }
.p-10  { padding: 2.5rem; }
.p-12  { padding: 3rem; }
.p-16  { padding: 4rem; }
.p-20  { padding: 5rem; }

/* Px (左右) */
.px-0  { padding-left: 0; padding-right: 0; }
.px-1  { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2  { padding-left: 0.5rem; padding-right: 0.5rem; }
.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-6  { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8  { padding-left: 2rem; padding-right: 2rem; }

/* Py (上下) */
.py-0  { padding-top: 0; padding-bottom: 0; }
.py-1  { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2  { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3  { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4  { padding-top: 1rem; padding-bottom: 1rem; }
.py-6  { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8  { padding-top: 2rem; padding-bottom: 2rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }

/* Pt (上) */
.pt-0  { padding-top: 0; }
.pt-4  { padding-top: 1rem; }
.pt-6  { padding-top: 1.5rem; }
.pt-8  { padding-top: 2rem; }
.pt-12 { padding-top: 3rem; }
.pt-16 { padding-top: 4rem; }
.pt-20 { padding-top: 5rem; }

/* Pb (下) */
.pb-0  { padding-bottom: 0; }
.pb-4  { padding-bottom: 1rem; }
.pb-6  { padding-bottom: 1.5rem; }
.pb-8  { padding-bottom: 2rem; }
.pb-12 { padding-bottom: 3rem; }
.pb-16 { padding-bottom: 4rem; }

/* Pl (左) */
.pl-0  { padding-left: 0; }
.pl-2  { padding-left: 0.5rem; }
.pl-4  { padding-left: 1rem; }
.pl-6  { padding-left: 1.5rem; }

/* Pr (右) */
.pr-0  { padding-right: 0; }
.pr-2  { padding-right: 0.5rem; }
.pr-4  { padding-right: 1rem; }
.pr-6  { padding-right: 1.5rem; }

/* ==========================================
   6. Spacing — Margin（外边距）
   ========================================== */
.m-0   { margin: 0; }
.m-auto { margin: auto; }
.m-1   { margin: 0.25rem; }
.m-2   { margin: 0.5rem; }
.m-3   { margin: 0.75rem; }
.m-4   { margin: 1rem; }
.m-6   { margin: 1.5rem; }
.m-8   { margin: 2rem; }

/* Mx (左右) */
.mx-auto { margin-left: auto; margin-right: auto; }
.mx-0   { margin-left: 0; margin-right: 0; }
.mx-2   { margin-left: 0.5rem; margin-right: 0.5rem; }
.mx-4   { margin-left: 1rem; margin-right: 1rem; }
.mx-6   { margin-left: 1.5rem; margin-right: 1.5rem; }

/* My (上下) */
.my-0  { margin-top: 0; margin-bottom: 0; }
.my-2  { margin-top: 0.5rem; margin-bottom: 0.5rem; }
.my-4  { margin-top: 1rem; margin-bottom: 1rem; }
.my-6  { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.my-8  { margin-top: 2rem; margin-bottom: 2rem; }
.my-12 { margin-top: 3rem; margin-bottom: 3rem; }

/* Mt (上) */
.mt-0  { margin-top: 0; }
.mt-1  { margin-top: 0.25rem; }
.mt-2  { margin-top: 0.5rem; }
.mt-3  { margin-top: 0.75rem; }
.mt-4  { margin-top: 1rem; }
.mt-6  { margin-top: 1.5rem; }
.mt-8  { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mt-20 { margin-top: 5rem; }

/* Mb (下) */
.mb-0  { margin-bottom: 0; }
.mb-1  { margin-bottom: 0.25rem; }
.mb-2  { margin-bottom: 0.5rem; }
.mb-3  { margin-bottom: 0.75rem; }
.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; }
.mb-16 { margin-bottom: 4rem; }
.mb-20 { margin-bottom: 5rem; }

/* Ml (左) */
.ml-0  { margin-left: 0; }
.ml-1  { margin-left: 0.25rem; }
.ml-2  { margin-left: 0.5rem; }
.ml-4  { margin-left: 1rem; }
.ml-auto { margin-left: auto; }

/* Mr (右) */
.mr-0  { margin-right: 0; }
.mr-1  { margin-right: 0.25rem; }
.mr-2  { margin-right: 0.5rem; }
.mr-4  { margin-right: 1rem; }
.mr-auto { margin-right: auto; }

/* ==========================================
   7. Gap（间距）
   ========================================== */
.gap-0 { gap: 0; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }

/* X 轴间距 */
.gap-x-1 { column-gap: 0.25rem; }
.gap-x-2 { column-gap: 0.5rem; }
.gap-x-3 { column-gap: 0.75rem; }
.gap-x-4 { column-gap: 1rem; }
.gap-x-6 { column-gap: 1.5rem; }
.gap-x-8 { column-gap: 2rem; }

/* Y 轴间距 */
.gap-y-1 { row-gap: 0.25rem; }
.gap-y-2 { row-gap: 0.5rem; }
.gap-y-3 { row-gap: 0.75rem; }
.gap-y-4 { row-gap: 1rem; }
.gap-y-6 { row-gap: 1.5rem; }
.gap-y-8 { row-gap: 2rem; }

/* Space Between（子元素间距） */
.space-x-1 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(0.25rem * var(--tw-space-x-reverse)); margin-left: calc(0.25rem * calc(1 - var(--tw-space-x-reverse))); }
.space-x-2 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(0.5rem * var(--tw-space-x-reverse)); margin-left: calc(0.5rem * calc(1 - var(--tw-space-x-reverse))); }
.space-x-4 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(1rem * var(--tw-space-x-reverse)); margin-left: calc(1rem * calc(1 - var(--tw-space-x-reverse))); }
.space-y-1 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(0.25rem * var(--tw-space-y-reverse)); margin-bottom: calc(0.25rem * calc(1 - var(--tw-space-y-reverse))); }
.space-y-2 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(0.5rem * var(--tw-space-y-reverse)); margin-bottom: calc(0.5rem * calc(1 - var(--tw-space-y-reverse))); }
.space-y-3 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(0.75rem * var(--tw-space-y-reverse)); margin-bottom: calc(0.75rem * calc(1 - var(--tw-space-y-reverse))); }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(1rem * var(--tw-space-y-reverse)); margin-bottom: calc(1rem * calc(1 - var(--tw-space-y-reverse))); }
.space-y-6 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(1.5rem * var(--tw-space-y-reverse)); margin-bottom: calc(1.5rem * calc(1 - var(--tw-space-y-reverse))); }
.space-y-8 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(2rem * var(--tw-space-y-reverse)); margin-bottom: calc(2rem * calc(1 - var(--tw-space-y-reverse))); }

/* ==========================================
   8. Typography — Font Size（字体大小）
   ========================================== */
.text-xs     { font-size: 0.75rem; line-height: 1rem; }      /* 12px */
.text-sm     { font-size: 0.875rem; line-height: 1.25rem; }   /* 14px */
.text-base   { font-size: 1rem; line-height: 1.5rem; }        /* 16px */
.text-lg     { font-size: 1.125rem; line-height: 1.75rem; }   /* 18px */
.text-xl     { font-size: 1.25rem; line-height: 1.75rem; }    /* 20px */
.text-2xl    { font-size: 1.5rem; line-height: 2rem; }         /* 24px */
.text-3xl    { font-size: 1.875rem; line-height: 2.25rem; }   /* 30px */
.text-4xl    { font-size: 2.25rem; line-height: 2.5rem; }     /* 36px */
.text-5xl    { font-size: 3rem; line-height: 1; }              /* 48px */
.text-6xl    { font-size: 3.75rem; line-height: 1; }           /* 60px */

/* ==========================================
   9. Typography — Font Weight（字重）
   ========================================== */
.font-normal    { font-weight: 400; }
.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; }

/* ==========================================
   10. Typography — Text Color（文字颜色）
   ========================================== */
.text-inherit   { color: inherit; }
.text-current   { color: currentColor; }
.text-transparent { color: transparent; }
.text-white      { color: #ffffff; }
.text-black      { color: #000000; }

/* Gray 色系 */
.text-gray-50  { color: #f9fafb; }
.text-gray-100 { color: #f3f4f6; }
.text-gray-200 { color: #e5e7eb; }
.text-gray-300 { color: #d1d5db; }
.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; }

/* Blue 色系 */
.text-blue-50  { color: #eff6ff; }
.text-blue-100 { color: #dbeafe; }
.text-blue-200 { color: #bfdbfe; }
.text-blue-300 { color: #93c5fd; }
.text-blue-400 { color: #60a5fa; }
.text-blue-500 { color: #3b82f6; }
.text-blue-600 { color: #2563eb; }
.text-blue-700 { color: #1d4ed8; }
.text-blue-800 { color: #1e40af; }
.text-blue-900 { color: #1e3a8a; }

/* 主题色引用 */
.text-primary { color: var(--primary-color, #1a3a5c); }
.text-secondary { color: var(--secondary-color, #1e5a99); }
.text-accent { color: var(--accent-color, #d4a853); }

/* ==========================================
   11. Typography — Text Alignment（文本对齐）
   ========================================== */
.text-left    { text-align: left; }
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-justify { text-align: justify; }

/* ==========================================
   12. Typography — Line Height（行高）
   ========================================== */
.leading-none   { line-height: 1; }
.leading-tight  { line-height: 1.25; }
.leading-snug   { line-height: 1.375; }
.leading-normal { line-height: 1.5; }
.leading-relaxed { line-height: 1.625; }
.leading-loose  { line-height: 2; }

/* ==========================================
   13. Typography — Decoration & Transform
   ========================================== */
.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.no-underline { text-decoration: none; }
.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }
.normal-case { text-transform: none; }
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================
   14. Background Color（背景颜色）
   ========================================== */
.bg-transparent { background-color: transparent; }
.bg-white        { background-color: #ffffff; }
.bg-black        { background-color: #000000; }

/* Gray 色系 */
.bg-gray-50  { background-color: #f9fafb; }
.bg-gray-100 { background-color: #f3f4f6; }
.bg-gray-200 { background-color: #e5e7eb; }
.bg-gray-300 { background-color: #d1d5db; }
.bg-gray-400 { background-color: #9ca3af; }
.bg-gray-500 { background-color: #6b7280; }
.bg-gray-600 { background-color: #4b5563; }
.bg-gray-700 { background-color: #374151; }
.bg-gray-800 { background-color: #1f2937; }
.bg-gray-900 { background-color: #111827; }

/* Blue 色系 */
.bg-blue-50  { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-blue-900 { background-color: #1e3a8a; }

/* 主题色 */
.bg-primary   { background-color: var(--primary-color, #1a3a5c); }
.bg-secondary { background-color: var(--secondary-color, #1e5a99); }
.bg-light     { background-color: var(--bg-light, #f1f5f9); }
.bg-dark      { background-color: var(--bg-dark, #1a1a1a); }

/* ==========================================
   15. Border Radius（圆角）
   ========================================== */
.rounded-none  { border-radius: 0; }
.rounded-sm    { border-radius: 0.125rem; }
.rounded       { border-radius: 0.25rem; }
.rounded-md    { border-radius: 0.375rem; }
.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; }

/* 单独方向 */
.rounded-t-lg { border-top-left-radius: 0.5rem; border-top-right-radius: 0.5rem; }
.rounded-b-lg { border-bottom-left-radius: 0.5rem; border-bottom-right-radius: 0.5rem; }

/* ==========================================
   16. Border（边框）
   ========================================== */
.border { border-width: 1px; }
.border-0 { border-width: 0; }
.border-2 { border-width: 2px; }
.border-4 { border-width: 4px; }
.border-t { border-top-width: 1px; }
.border-b { border-bottom-width: 1px; }

/* 边框颜色 */
.border-gray-200 { border-color: #e5e7eb; }
.border-gray-300 { border-color: #d1d5db; }
.border-transparent { border-color: transparent; }
.border-primary { border-color: var(--primary-color, #1a3a5c); }

/* ==========================================
   17. Shadow（阴影）
   ========================================== */
.shadow-sm    { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow       { box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1); }
.shadow-md    { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1); }
.shadow-lg    { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1); }
.shadow-xl    { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1); }
.shadow-2xl   { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }
.shadow-inner { box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05); }
.shadow-none  { box-shadow: none; }

/* ==========================================
   18. Sizing — Width（宽度）
   ========================================== */
.w-0    { width: 0; }
.w-full { width: 100%; }
.w-screen { width: 100vw; }
.w-auto { width: auto; }
.min-w-0 { min-width: 0; }
.max-w-full { max-width: 100%; }
.max-w-xs { max-width: 20rem; }   /* 320px */
.max-w-sm { max-width: 24rem; }   /* 384px */
.max-w-md { max-width: 28rem; }   /* 448px */
.max-w-lg { max-width: 32rem; }   /* 512px */
.max-w-xl { max-width: 36rem; }   /* 576px */
.max-w-2xl { max-width: 42rem; }  /* 672px */
.max-w-3xl { max-width: 48rem; }  /* 768px */
.max-w-4xl { max-width: 56rem; }  /* 896px */
.max-w-5xl { max-width: 64rem; }  /* 1024px */
.max-w-6xl { max-width: 72rem; }  /* 1152px */
.max-w-7xl { max-width: 80rem; }  /* 1280px */
.max-w-prose { max-width: 65ch; }
.max-w-none { max-width: none; }

/* ==========================================
   19. Sizing — Height（高度）
   ========================================== */
.h-0    { height: 0; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.h-auto { height: auto; }
.h-8   { height: 2rem; }     /* 32px */
.h-10  { height: 2.5rem; }   /* 40px */
.h-12  { height: 3rem; }     /* 48px */
.h-16  { height: 4rem; }     /* 64px */
.h-20  { height: 5rem; }     /* 80px */
.h-24  { height: 6rem; }     /* 96px */
.h-32  { height: 8rem; }     /* 128px */
.h-40  { height: 10rem; }    /* 160px */
.h-48  { height: 12rem; }    /* 192px */
.h-56  { height: 14rem; }    /* 224px */
.h-64  { height: 16rem; }    /* 256px */
.h-auto { height: auto; }

/* Min Height */
.min-h-0 { min-height: 0; }
.min-h-full { min-height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Max Height */
.max-h-full { max-height: 100%; }

/* ==========================================
   20. Overflow（溢出）
   ========================================== */
.overflow-auto    { overflow: auto; }
.overflow-hidden   { overflow: hidden; }
.overflow-visible  { overflow: visible; }
.overflow-scroll   { overflow: scroll; }
.overflow-x-auto   { overflow-x: auto; }
.overflow-y-auto   { overflow-y: auto; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-hidden { overflow-y: hidden; }

/* Text Overflow */
.text-ellipsis { text-overflow: ellipsis; }
.text-clip { text-overflow: clip; }

/* ==========================================
   21. Position（定位）
   ========================================== */
.static    { position: static; }
.relative  { position: relative; }
.absolute  { position: absolute; }
.fixed     { position: fixed; }
.sticky    { position: sticky; }

/* Inset（偏移） */
.inset-0    { top: 0; right: 0; bottom: 0; left: 0; }
.inset-auto { top: auto; right: auto; bottom: auto; left: auto; }
.top-0    { top: 0; }
.right-0  { right: 0; }
.bottom-0 { bottom: 0; }
.left-0   { left: 0; }

/* Z-index */
.z-0   { z-index: 0; }
.z-10  { z-index: 10; }
.z-20  { z-index: 20; }
.z-30  { z-index: 30; }
.z-40  { z-index: 40; }
.z-50  { z-index: 50; }
.z-auto { z-index: auto; }

/* ==========================================
   22. Transition（过渡动画）
   ========================================== */
.transition-none { transition-property: none; }
.transition-all   { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-colors { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-opacity { transition-property: opacity; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.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 */
.duration-75  { transition-duration: 75ms; }
.duration-150 { transition-duration: 150ms; }
.duration-300 { transition duration: 300ms; }
.duration-500 { transition-duration: 500ms; }
.duration-700 { transition-duration: 700ms; }
.duration-1000 { transition-duration: 1000ms; }

/* Easing */
.ease-linear { transition-timing-function: linear; }
.ease-in     { transition-timing-function: cubic-bezier(0.4, 0, 1, 1); }
.ease-out    { transition-timing-function: cubic-bezier(0, 0, 0.2, 1); }
.ease-in-out { transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); }

/* ==========================================
   23. Transform（变换）
   ========================================== */
.scale-95  { transform: scale(0.95); }
.scale-100 { transform: scale(1); }
.scale-105 { transform: scale(1.05); }
.scale-110 { transform: scale(1.1); }
.rotate-0  { transform: rotate(0deg); }
.rotate-45 { transform: rotate(45deg); }
.rotate-90 { transform: rotate(90deg); }
.rotate-180{ transform: rotate(180deg); }
.-rotate-180 { transform: rotate(-180deg); }
.translate-y-0 { --tw-translate-y: 0; transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y)); }
.-translate-y-1 { transform: translateY(-0.25rem); }
.-translate-y-2 { transform: translateY(-0.5rem); }
.-translate-y-4 { transform: translateY(-1rem); }
.-translate-y-8 { transform: translateY(-2rem); }
.translate-y-1 { transform: translateY(0.25rem); }
.translate-y-2 { transform: translateY(0.5rem); }
.translate-y-4 { transform: translateY(1rem); }
.translate-x-0 { transform: translateX(0); }
.-translate-x-1 { transform: translateX(-0.25rem); }
.-translate-x-4 { transform: translateX(-1rem); }

/* ==========================================
   24. Cursor（光标）
   ========================================== */
.cursor-auto    { cursor: auto; }
.cursor-default  { cursor: default; }
.cursor-pointer  { cursor: pointer; }
.cursor-wait     { cursor: wait; }
.cursor-text     { cursor: text; }
.cursor-move     { cursor: move; }
.cursor-not-allowed { cursor: not-allowed; }

/* ==========================================
   25. Opacity（透明度）
   ========================================== */
.opacity-0   { opacity: 0; }
.opacity-5   { opacity: 0.05; }
.opacity-10  { opacity: 0.1; }
.opacity-20  { opacity: 0.2; }
.opacity-25  { opacity: 0.25; }
.opacity-30  { opacity: 0.3; }
.opacity-40  { opacity: 0.4; }
.opacity-50  { opacity: 0.5; }
.opacity-60  { opacity: 0.6; }
.opacity-70  { opacity: 0.7; }
.opacity-75  { opacity: 0.75; }
.opacity-80  { opacity: 0.8; }
.opacity-90  { opacity: 0.9; }
.opacity-95  { opacity: 0.95; }
.opacity-100 { opacity: 1; }

/* ==========================================
   26. Object Fit & Position
   ========================================== */
.object-contain  { object-fit: contain; }
.object-cover    { object-fit: cover; }
.object-fill     { object-fit: fill; }
.object-none     { object-fit: none; }
.object-scale-down { object-fit: scale-down; }
.object-center   { object-position: center; }
.object-top      { object-position: top; }

/* ==========================================
   27. Hover States（悬停态）
   ========================================== */
.hover\:block:hover { display: block; }
.hover\:flex:hover { display: flex; }
.hover\:inline-flex:hover { display: inline-flex; }
.hover\:hidden:hover { display: none; }

/* Hover: Text Color */
.hover\:text-transparent:hover { color: transparent; }
.hover\:text-white:hover { color: #ffffff; }
.hover\:text-black:hover { color: #000000; }
.hover\:text-gray-600:hover { color: #4b5563; }
.hover\:text-gray-800:hover { color: #1f2937; }
.hover\:text-gray-900:hover { color: #111827; }
.hover\:text-blue-50:hover { color: #eff6ff; }
.hover\:text-blue-100:hover { color: #dbeafe; }
.hover\:text-blue-600:hover { color: #2563eb; }
.hover\:text-blue-700:hover { color: #1d4ed8; }
.hover\:text-blue-800:hover { color: #1e40af; }
.hover\:text-blue-900:hover { color: #1e3a8a; }
.hover\:text-primary:hover { color: var(--primary-color, #1a3a5c); }
.hover\:text-secondary:hover { color: var(--secondary-color, #1e5a99); }
.hover\:text-accent:hover { color: var(--accent-color, #d4a853); }

/* Hover: Background */
.hover\:bg-transparent:hover { background-color: transparent; }
.hover\:bg-white:hover { background-color: #ffffff; }
.hover\:bg-gray-100:hover { background-color: #f3f4f6; }
.hover\:bg-gray-50:hover { background-color: #f9fafb; }

/* Hover: Shadow */
.hover\:shadow:hover { box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1); }
.hover\:shadow-md:hover { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1); }
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1); }
.hover\:shadow-xl:hover { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1); }
.hover\:shadow-none:hover { box-shadow: none; }

/* Hover: Transform */
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }
.hover\:-translate-y-2:hover { transform: translateY(-0.5rem); }
.hover\:-translate-y-4:hover { transform: translateY(-1rem); }
.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:scale-110:hover { transform: scale(1.1); }

/* Hover: Border */
.hover\:border-transparent:hover { border-color: transparent; }
.hover\:border-gray-300:hover { border-color: #d1d5db; }
.hover\:border-primary:hover { border-color: var(--primary-color, #1a3a5c); }

/* Hover: Opacity */
.hover\:opacity-75:hover { opacity: 0.75; }
.hover\:opacity-80:hover { opacity: 0.8; }
.hover\:opacity-100:hover { opacity: 1; }

/* Hover: Underline / No Underline */
.hover\:underline:hover { text-decoration: underline; }
.hover\:no-underline:hover { text-decoration: none; }

/* ==========================================
   28. Focus States（聚焦态）
   ========================================== */
.focus\:outline-none:focus { outline: none; }
.focus\:ring:focus { --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color); --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color); box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow); }
.focus\:outline:focus { outline-style: solid; }

/* ==========================================
   29. Active States（激活态）
   ========================================== */
.active\:bg-primary:active { background-color: var(--primary-color, #1a3a5c); }
.active\:bg-gray-200:active { background-color: #e5e7eb; }

/* ==========================================
   30. Responsive Breakpoints（响应式断点）
   ========================================== */

/* sm: 640px+ */
@media (min-width: 640px) {
  .sm\:block { display: block; }
  .sm\:flex { display: flex; }
  .sm\:inline-block { display: inline-block; }
  .sm\:hidden { display: none; }
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sm\:text-sm { font-size: 0.875rem; line-height: 1.25rem; }
  .sm\:text-base { font-size: 1rem; line-height: 1.5rem; }
  .sm\:text-lg { font-size: 1.125rem; line-height: 1.75rem; }
  .sm\:text-xl { font-size: 1.25rem; line-height: 1.75rem; }
  .sm\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
  .sm\:mx-4 { margin-left: 1rem; margin-right: 1rem; }
  .sm\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .sm\:py-8 { padding-top: 2rem; padding-bottom: 2rem; }
  .sm\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
  .sm\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .sm\:gap-4 { gap: 1rem; }
  .sm\:gap-6 { gap: 1.5rem; }
  .sm\:gap-8 { gap: 2rem; }
  .sm\:w-full { width: 100%; }
}

/* md: 768px+ */
@media (min-width: 768px) {
  .md\:block { display: block; }
  .md\:flex { display: flex; }
  .md\:inline-flex { display: inline-flex; }
  .md\:hidden { display: none; }
  .md\:flex-row { flex-direction: row; }
  .md\:flex-col { flex-direction: column; }
  .md\:flex-wrap { flex-wrap: wrap; }
  .md\:items-start { align-items: flex-start; }
  .md\:items-center { align-items: center; }
  .md\:items-stretch { align-items: stretch; }
  .md\:justify-start { justify-content: flex-start; }
  .md\:justify-center { justify-content: center; }
  .md\:justify-between { justify-content: space-between; }
  .md\:justify-end { justify-content: flex-end; }
  
  /* md: Grid */
  .md\:grid { display: grid; }
  .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .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-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .md\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .md\:col-span-1 { grid-column: span 1 / span 1; }
  .md\:col-span-2 { grid-column: span 2 / span 2; }
  .md\:col-span-3 { grid-column: span 3 / span 3; }
  .md\:col-span-full { grid-column: 1 / -1; }

  /* md: Text Size */
  .md\:text-xs { font-size: 0.75rem; line-height: 1rem; }
  .md\:text-sm { font-size: 0.875rem; line-height: 1.25rem; }
  .md\:text-base { font-size: 1rem; line-height: 1.5rem; }
  .md\:text-lg { font-size: 1.125rem; line-height: 1.75rem; }
  .md\:text-xl { font-size: 1.25rem; line-height: 1.75rem; }
  .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: Padding */
  .md\:p-0 { padding: 0; }
  .md\:p-4 { padding: 1rem; }
  .md\:p-6 { padding: 1.5rem; }
  .md\:p-8 { padding: 2rem; }
  .md\:p-10 { padding: 2.5rem; }
  .md\:p-12 { padding: 3rem; }
  .md\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .md\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .md\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .md\:py-0 { padding-top: 0; padding-bottom: 0; }
  .md\:py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
  .md\:py-4 { padding-top: 1rem; padding-bottom: 1rem; }
  .md\:py-8 { padding-top: 2rem; padding-bottom: 2rem; }
  .md\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
  .md\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .md\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .md\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
  .md\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
  .md\:pt-0 { padding-top: 0; }
  .md\:pt-4 { padding-top: 1rem; }
  .md\:pt-8 { padding-top: 2rem; }
  .md\:pb-0 { padding-bottom: 0; }

  /* md: Margin */
  .md\:m-0 { margin: 0; }
  .md\:m-auto { margin: auto; }
  .md\:mx-0 { margin-left: 0; margin-right: 0; }
  .md\:mx-auto { margin-left: auto; margin-right: auto; }
  .md\:my-0 { margin-top: 0; margin-bottom: 0; }
  .md\:mt-0 { margin-top: 0; }
  .md\:mb-0 { margin-bottom: 0; }
  .md\:ml-0 { margin-left: 0; }
  .md\:mr-0 { margin-right: 0; }

  /* md: Gap */
  .md\:gap-0 { gap: 0; }
  .md\:gap-4 { gap: 1rem; }
  .md\:gap-6 { gap: 1.5rem; }
  .md\:gap-8 { gap: 2rem; }
  .md\:gap-10 { gap: 2.5rem; }
  .md\:gap-12 { gap: 3rem; }

  /* md: Width/Height */
  .md\:w-auto { width: auto; }
  .md\:w-full { width: 100%; }
  .md\:w-1\/2 { width: 50%; }
  .md\:w-1\/3 { width: 33.333333%; }
  .md\:w-2\/3 { width: 66.666667%; }
  .md\:w-1\/4 { width: 25%; }
  .md\:w-3\/4 { width: 75%; }
  .md\:h-full { height: 100%; }
  .md\:h-screen { height: 100vh; }
  .md\:max-w-2xl { max-width: 42rem; }
  .md\:max-w-3xl { max-width: 48rem; }
  .md\:max-w-4xl { max-width: 56rem; }
  .md\:max-w-5xl { max-width: 64rem; }
  .md\:max-w-6xl { max-width: 72rem; }
  .md\:max-w-7xl { max-width: 80rem; }
  .md\:max-w-none { max-width: none; }
  .md\:min-w-0 { min-width: 0; }

  /* md: Misc */
  .md\:space-x-4 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(1rem * var(--tw-space-x-reverse)); margin-left: calc(1rem * calc(1 - var(--tw-space-x-reverse))); }
  .md\:space-x-8 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(2rem * var(--tw-space-x-reverse)); margin-left: calc(2rem * calc(1 - var(--tw-space-x-reverse))); }
  .md\:space-y-0 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(0px * var(--tw-space-y-reverse)); margin-bottom: calc(0px * calc(1 - var(--tw-space-y-reverse))); }
  .md\:space-y-4 > :not([hidden]) ~ :not([hidden]) { --tw-space-y-reverse: 0; margin-top: calc(1rem * var(--tw-space-y-reverse)); margin-bottom: calc(1rem * calc(1 - var(--tw-space-y-reverse))); }
  .md\:rounded-lg { border-radius: 0.5rem; }
  .md\:rounded-none { border-radius: 0; }
  .md\:text-left { text-align: left; }
  .md\:text-center { text-align: center; }
}

/* lg: 1024px+ */
@media (min-width: 1024px) {
  .lg\:block { display: block; }
  .lg\:flex { display: flex; }
  .lg\:inline-flex { display: inline-flex; }
  .lg\:hidden { display: none; }
  .lg\:grid { display: grid; }
  .lg\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .lg\:flex-row { flex-direction: row; }
  .lg\:flex-col { flex-direction: column; }
  .lg\:items-center { align-items: center; }
  .lg\:items-start { align-items: flex-start; }
  .lg\:items-stretch { align-items: stretch; }
  .lg\:justify-between { justify-content: space-between; }
  .lg\:justify-center { justify-content: center; }
  .lg\:justify-start { justify-content: flex-start; }
  .lg\:justify-end { justify-content: flex-end; }
  .lg\:text-sm { font-size: 0.875rem; line-height: 1.25rem; }
  .lg\:text-base { font-size: 1rem; line-height: 1.5rem; }
  .lg\:text-lg { font-size: 1.125rem; line-height: 1.75rem; }
  .lg\:text-xl { font-size: 1.25rem; line-height: 1.75rem; }
  .lg\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
  .lg\:text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
  .lg\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .lg\:text-5xl { font-size: 3rem; line-height: 1; }
  .lg\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .lg\:p-0 { padding: 0; }
  .lg\:p-4 { padding: 1rem; }
  .lg\:p-6 { padding: 1.5rem; }
  .lg\:p-8 { padding: 2rem; }
  .lg\:p-10 { padding: 2.5rem; }
  .lg\:p-12 { padding: 3rem; }
  .lg\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .lg\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .lg\:py-0 { padding-top: 0; padding-bottom: 0; }
  .lg\:py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
  .lg\:py-4 { padding-top: 1rem; padding-bottom: 1rem; }
  .lg\:py-8 { padding-top: 2rem; padding-bottom: 2rem; }
  .lg\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
  .lg\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .lg\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .lg\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
  .lg\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
  .lg\:m-0 { margin: 0; }
  .lg\:m-auto { margin: auto; }
  .lg\:mx-0 { margin-left: 0; margin-right: 0; }
  .lg\:mx-auto { margin-left: auto; margin-right: auto; }
  .lg\:my-0 { margin-top: 0; margin-bottom: 0; }
  .lg\:mt-0 { margin-top: 0; }
  .lg\:mb-0 { margin-bottom: 0; }
  .lg\:ml-0 { margin-left: 0; }
  .lg\:mr-0 { margin-right: 0; }
  .lg\:gap-0 { gap: 0; }
  .lg\:gap-4 { gap: 1rem; }
  .lg\:gap-6 { gap: 1.5rem; }
  .lg\:gap-8 { gap: 2rem; }
  .lg\:gap-10 { gap: 2.5rem; }
  .lg\:gap-12 { gap: 3rem; }
  .lg\:gap-16 { gap: 4rem; }
  .lg\:w-auto { width: auto; }
  .lg\:w-full { width: 100%; }
  .lg\:w-1\/2 { width: 50%; }
  .lg\:w-1\/3 { width: 33.333333%; }
  .lg\:w-2\/3 { width: 66.666667%; }
  .lg\:w-1\/4 { width: 25%; }
  .lg\:w-3\/4 { width: 75%; }
  .lg\:h-full { height: 100%; }
  .lg\:h-screen { height: 100vh; }
  .lg\:max-w-2xl { max-width: 42rem; }
  .lg\:max-w-3xl { max-width: 48rem; }
  .lg\:max-w-4xl { max-width: 56rem; }
  .lg\:max-w-5xl { max-width: 64rem; }
  .lg\:max-w-6xl { max-width: 72rem; }
  .lg\:max-w-7xl { max-width: 80rem; }
  .lg\:max-w-none { max-width: none; }
  .lg\:min-w-0 { min-width: 0; }
  .lg\:space-x-4 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(1rem * var(--tw-space-x-reverse)); margin-left: calc(1rem * calc(1 - var(--tw-space-x-reverse))); }
  .lg\:space-x-8 > :not([hidden]) ~ :not([hidden]) { --tw-space-x-reverse: 0; margin-right: calc(2rem * var(--tw-space-x-reverse)); margin-left: calc(2rem * calc(1 - var(--tw-space-x-reverse))); }
  .lg\:col-span-1 { grid-column: span 1 / span 1; }
  .lg\:col-span-2 { grid-column: span 2 / span 2; }
  .lg\:col-span-3 { grid-column: span 3 / span 3; }
  .lg\:col-span-full { grid-column: 1 / -1; }
  .lg\:rounded-lg { border-radius: 0.5rem; }
  .lg\:rounded-none { border-radius: 0; }
  .lg\:text-left { text-align: left; }
  .lg\:text-center { text-align: center; }
}

/* xl: 1280px+ */
@media (min-width: 1280px) {
  .xl\:block { display: block; }
  .xl\:flex { display: flex; }
  .xl\:inline-flex { display: inline-flex; }
  .xl\:hidden { display: none; }
  .xl\:grid { display: grid; }
  .xl\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .xl\:flex-row { flex-direction: row; }
  .xl\:flex-col { flex-direction: column; }
  .xl\:items-center { align-items: center; }
  .xl\:items-start { align-items: flex-start; }
  .xl\:items-stretch { align-items: stretch; }
  .xl\:justify-between { justify-content: space-between; }
  .xl\:justify-center { justify-content: center; }
  .xl\:justify-start { justify-content: flex-start; }
  .xl\:text-sm { font-size: 0.875rem; line-height: 1.25rem; }
  .xl\:text-base { font-size: 1rem; line-height: 1.5rem; }
  .xl\:text-lg { font-size: 1.125rem; line-height: 1.75rem; }
  .xl\:text-xl { font-size: 1.25rem; line-height: 1.75rem; }
  .xl\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
  .xl\:text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
  .xl\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .xl\:text-5xl { font-size: 3rem; line-height: 1; }
  .xl\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .xl\:p-0 { padding: 0; }
  .xl\:p-4 { padding: 1rem; }
  .xl\:p-6 { padding: 1.5rem; }
  .xl\:p-8 { padding: 2rem; }
  .xl\:p-10 { padding: 2.5rem; }
  .xl\:p-12 { padding: 3rem; }
  .xl\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .xl\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .xl\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .xl\:py-0 { padding-top: 0; padding-bottom: 0; }
  .xl\:py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
  .xl\:py-4 { padding-top: 1rem; padding-bottom: 1rem; }
  .xl\:py-8 { padding-top: 2rem; padding-bottom: 2rem; }
  .xl\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
  .xl\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .xl\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .xl\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
  .xl\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
  .xl\:m-0 { margin: 0; }
  .xl\:m-auto { margin: auto; }
  .xl\:mx-0 { margin-left: 0; margin-right: 0; }
  .xl\:mx-auto { margin-left: auto; margin-right: auto; }
  .xl\:my-0 { margin-top: 0; margin-bottom: 0; }
  .xl\:mt-0 { margin-top: 0; }
  .xl\:mb-0 { margin-bottom: 0; }
  .xl\:ml-0 { margin-left: 0; }
  .xl\:mr-0 { margin-right: 0; }
  .xl\:gap-0 { gap: 0; }
  .xl\:gap-4 { gap: 1rem; }
  .xl\:gap-6 { gap: 1.5rem; }
  .xl\:gap-8 { gap: 2rem; }
  .xl\:gap-10 { gap: 2.5rem; }
  .xl\:gap-12 { gap: 3rem; }
  .xl\:gap-16 { gap: 4rem; }
  .xl\:w-auto { width: auto; }
  .xl\:w-full { width: 100%; }
  .xl\:w-1\/2 { width: 50%; }
  .xl\:w-1\/3 { width: 33.333333%; }
  .xl\:w-2\/3 { width: 66.666667%; }
  .xl\:w-1\/4 { width: 25%; }
  .xl\:w-3\/4 { width: 75%; }
  .xl\:h-full { height: 100%; }
  .xl\:h-screen { height: 100vh; }
  .xl\:max-w-2xl { max-width: 42rem; }
  .xl\:max-w-3xl { max-width: 48rem; }
  .xl\:max-w-4xl { max-width: 56rem; }
  .xl\:max-w-5xl { max-width: 64rem; }
  .xl\:max-w-6xl { max-width: 72rem; }
  .xl\:max-w-7xl { max-width: 80rem; }
  .xl\:max-w-none { max-width: none; }
  .xl\:min-w-0 { min-width: 0; }
  .xl\:col-span-1 { grid-column: span 1 / span 1; }
  .xl\:col-span-2 { grid-column: span 2 / span 2; }
  .xl\:col-span-3 { grid-column: span 3 / span 3; }
  .xl\:col-span-full { grid-column: 1 / -1; }
  .xl\:rounded-lg { border-radius: 0.5rem; }
  .xl\:text-left { text-align: left; }
  .xl\:text-center { text-align: center; }
}

/* 2xl: 1536px+ */
@media (min-width: 1536px) {
  .2xl\:block { display: block; }
  .2xl\:flex { display: flex; }
  .2xl\:hidden { display: none; }
  .2xl\:grid { display: grid; }
  .2xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .2xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .2xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .2xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .2xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .2xl\:text-sm { font-size: 0.875rem; line-height: 1.25rem; }
  .2xl\:text-base { font-size: 1rem; line-height: 1.5rem; }
  .2xl\:text-lg { font-size: 1.125rem; line-height: 1.75rem; }
  .2xl\:text-xl { font-size: 1.25rem; line-height: 1.75rem; }
  .2xl\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
  .2xl\:text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
  .2xl\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .2xl\:text-5xl { font-size: 3rem; line-height: 1; }
  .2xl\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .2xl\:p-0 { padding: 0; }
  .2xl\:p-4 { padding: 1rem; }
  .2xl\:p-6 { padding: 1.5rem; }
  .2xl\:p-8 { padding: 2rem; }
  .2xl\:p-10 { padding: 2.5rem; }
  .2xl\:p-12 { padding: 3rem; }
  .2xl\:py-0 { padding-top: 0; padding-bottom: 0; }
  .2xl\:py-8 { padding-top: 2rem; padding-bottom: 2rem; }
  .2xl\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .2xl\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
  .2xl\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
  .2xl\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
  .2xl\:m-0 { margin: 0; }
  .2xl\:m-auto { margin: auto; }
  .2xl\:mx-0 { margin-left: 0; margin-right: 0; }
  .2xl\:mx-auto { margin-left: auto; margin-right: auto; }
  .2xl\:my-0 { margin-top: 0; margin-bottom: 0; }
  .2xl\:mt-0 { margin-top: 0; }
  .2xl\:mb-0 { margin-bottom: 0; }
  .2xl\:ml-0 { margin-left: 0; }
  .2xl\:mr-0 { margin-right: 0; }
  .2xl\:gap-4 { gap: 1rem; }
  .2xl\:gap-6 { gap: 1.5rem; }
  .2xl\:gap-8 { gap: 2rem; }
  .2xl\:w-full { width: 100%; }
  .2xl\:max-w-7xl { max-width: 80rem; }
  .2xl\:max-w-none { max-width: none; }
}

/* ===== 联系表单双栏布局补充 ===== */
.md\:flex-row { flex-direction: row; }
.md\:w-80 { width: 20rem; }