/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 字体类 */
.font-heading {
    font-family: "Bureau Grot", Arial, sans-serif;
}

/* 布局类 */
.flex { display: flex; }
.grid { display: grid; }
.inline-block { display: inline-block; }
.block { display: block; }

/* 方向和对齐 */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }

/* 间距 */
.m-0 { margin: 0; }
.m-4 { margin: 1rem; }
.m-6 { margin: 1.5rem; }
.m-8 { margin: 2rem; }
.m-12 { margin: 3rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.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-0 { margin-top: 0; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.p-0 { padding: 0; }
.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.p-12 { padding: 3rem; }
.px-0 { padding-left: 0; padding-right: 0; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.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-10 { padding-left: 2.5rem; padding-right: 2.5rem; }
.px-12 { padding-left: 3rem; padding-right: 3rem; }
.px-14 { padding-left: 3.5rem; padding-right: 3.5rem; }
.py-0 { padding-top: 0; padding-bottom: 0; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.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-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }
.pl-10 { padding-left: 2.5rem; }

.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }
.gap-20 { gap: 5rem; }

/* 尺寸 */
.w-full { width: 100%; }
.w-screen { width: 100vw; }
.max-w-full { max-width: 100%; }
.max-w-100 { max-width: 100px; }
.max-w-200 { max-width: 200px; }
.max-w-300 { max-width: 300px; }
.max-w-400 { max-width: 400px; }
.max-w-500 { max-width: 500px; }
.max-w-600 { max-width: 600px; }
.max-w-700 { max-width: 700px; }
.max-w-1400 { max-width: 1400px; }
.max-w-1500 { max-width: 1500px; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.h-9 { height: 2.25rem; }
.h-16 { height: 4rem; }
.min-h-500 { min-height: 500px; }
.min-h-screen { min-height: 100vh; }
.min-h-90vh { min-height: 90vh; }
.max-h-900 { max-height: 900px; }

/* 颜色 */
.bg-black { background-color: #000000; }
.bg-white { background-color: #ffffff; }
.bg-red-600 { background-color: #185ce3; }
.bg-transparent { background-color: transparent; }
.bg-black-95 { background-color: rgba(0, 0, 0, 0.95); }

.text-white { color: #ffffff; }
.text-black { color: #000000; }
.text-red-600 { color: #1866e3; }
.text-gray-800 { color: #333333; }
.text-gray-700 { color: #4a4a4a; }
.text-gray-600 { color: #696969; }
.text-gray-500 { color: #939393; }
.text-white-80 { color: rgba(255, 255, 255, 0.8); }
.text-white-90 { color: rgba(255, 255, 255, 0.9); }

/* 文本样式 */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.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; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }
.text-7xl { font-size: 4.5rem; }

.font-light { font-weight: 300; }
.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; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

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

.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; }

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

/* 边框 */
.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; }

.border-none { border: none; }
.border { border-width: 1px; }
.border-white-10 { border-color: rgba(255, 255, 255, 0.1); }
.border-current { border-color: currentColor; }

/* 定位 */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.top-0 { top: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.right-0 { right: 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; }

/* 视觉效果 */
.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 0 rgba(0, 0, 0, 0.06); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* 变换和过渡 */
.transition-all { transition: all 0.3s ease; }
.transition-colors { transition: color 0.3s ease, background-color 0.3s ease; }
.transition-transform { transition: transform 0.3s ease; }

.hover\:-translate-y-0_5:hover { transform: translateY(-2px); }
.hover\:bg-red-700:hover { background-color: #135ac4; }
.hover\:bg-white-10:hover { background-color: rgba(255, 255, 255, 0.1); }

/* 溢出 */
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-auto { overflow-y: auto; }

/* 指针 */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

/* 对象适配 */
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* 自定义网格 */
.grid-cols-auto-1fr-auto {
    grid-template-columns: auto 1fr auto;
}

.grid-cols-200-1fr {
    grid-template-columns: 200px 1fr;
}

.grid-cols-400-1fr {
    grid-template-columns: 400px 1fr;
}

/* 特殊效果类 */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2618e3;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.hero-text::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #1b18e3;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background: linear-gradient(0deg, #000000 0%, transparent 100%);
    pointer-events: none;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .md\:grid-cols-1 { grid-template-columns: 1fr; }
    .md\:text-center { text-align: center; }
    .md\:mx-auto { margin-left: auto; margin-right: auto; }
    .md\:hidden { display: none; }
}

@media (max-width: 768px) {
    .sm\:text-4xl { font-size: 2.25rem; }
    .sm\:text-center { text-align: center; }
}

@media (max-width: 480px) {
    .xs\:text-3xl { font-size: 1.875rem; }
    .xs\:text-xl { font-size: 1.25rem; }
}

/* 通用类 */
.no-underline { text-decoration: none; }
.italic { font-style: italic; }
.list-none { list-style: none; }
.pointer-events-none { pointer-events: none; }
.select-none { user-select: none; }
.resize-none { resize: none; }
.outline-none { outline: none; }
.break-words { word-wrap: break-word; }
.whitespace-nowrap { white-space: nowrap; }
.whitespace-pre { white-space: pre; }
.whitespace-pre-line { white-space: pre-line; }
.whitespace-pre-wrap { white-space: pre-wrap; }
.break-all { word-break: break-all; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overflow-ellipsis { text-overflow: ellipsis; }
.appearance-none { appearance: none; }
.backdrop-blur-sm { backdrop-filter: blur(8px); }

/* 自定义 */
.z::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #1818e3;
}

/* 字体大小 */
.text-8xl { font-size: 6rem; }
.text-9xl { font-size: 8rem; }

/* 负边距 */
.-m-1 { margin: -0.25rem; }
.-m-2 { margin: -0.5rem; }
.-m-4 { margin: -1rem; }
.-m-8 { margin: -2rem; }
.-mt-1 { margin-top: -0.25rem; }
.-mt-2 { margin-top: -0.5rem; }
.-mt-4 { margin-top: -1rem; }
.-mt-8 { margin-top: -2rem; }
.-mt-12 { margin-top: -3rem; }
.-mt-16 { margin-top: -4rem; }
.-mt-24 { margin-top: -6rem; }
.-mt-32 { margin-top: -8rem; }
.-mb-1 { margin-bottom: -0.25rem; }
.-mb-2 { margin-bottom: -0.5rem; }
.-mb-4 { margin-bottom: -1rem; }
.-mb-8 { margin-bottom: -2rem; }
.-mb-12 { margin-bottom: -3rem; }
.-mb-16 { margin-bottom: -4rem; }
.-mb-24 { margin-bottom: -6rem; }
.-mb-32 { margin-bottom: -8rem; }
.-ml-1 { margin-left: -0.25rem; }
.-mr-1 { margin-right: -0.25rem; }
.-mx-1 { margin-left: -0.25rem; margin-right: -0.25rem; }
.-my-1 { margin-top: -0.25rem; margin-bottom: -0.25rem; }

/* 字符背景效果类 */
.bg-char { background-clip: text; -webkit-background-clip: text; }
.bg-clip-text { -webkit-background-clip: text; background-clip: text; }
.text-fill-transparent { color: transparent; }
.bg-char-red { background-image: linear-gradient(to right, #e31836, #c41329); }

/* 变换 */
.-skew-x-6 { transform: skewX(-6deg); }
.-skew-x-12 { transform: skewX(-12deg); }
.skew-x-6 { transform: skewX(6deg); }
.scale-105 { transform: scale(1.05); }
.scale-110 { transform: scale(1.1); }
.scale-120 { transform: scale(1.2); }
.-translate-x-0_5 { transform: translateX(-2px); }
.-translate-x-1 { transform: translateX(-0.25rem); }
.-translate-x-2 { transform: translateX(-0.5rem); }
.-translate-y-0_5 { transform: translateY(-2px); }
.-translate-y-1 { transform: translateY(-0.25rem); }
.-translate-y-2 { transform: translateY(-0.5rem); }

/* 定位扩展 */
.-inset-1 { top: -0.25rem; right: -0.25rem; bottom: -0.25rem; left: -0.25rem; }
.-inset-2 { top: -0.5rem; right: -0.5rem; bottom: -0.5rem; left: -0.5rem; }
.-inset-4 { top: -1rem; right: -1rem; bottom: -1rem; left: -1rem; }
.-inset-8 { top: -2rem; right: -2rem; bottom: -2rem; left: -2rem; }

/* 模糊效果 */
.blur-sm { filter: blur(4px); }
.blur-md { filter: blur(8px); }
.blur-lg { filter: blur(12px); }

/* 不透明度扩展 */
.opacity-10 { opacity: 0.1; }
.opacity-20 { opacity: 0.2; }
.opacity-30 { opacity: 0.3; }
.opacity-70 { opacity: 0.7; }
.opacity-80 { opacity: 0.8; }
.opacity-90 { opacity: 0.9; }

/* 圆角扩展 */
.rounded-full { border-radius: 9999px; }

/* 文字阴影 */
.text-shadow-sm { text-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.text-shadow { text-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.text-shadow-lg { text-shadow: 0 4px 8px rgba(0,0,0,0.15); }
.text-shadow-xl { text-shadow: 0 8px 16px rgba(0,0,0,0.2); }
.text-shadow-2xl { text-shadow: 0 12px 24px rgba(0,0,0,0.25); }

/* 渐变背景 */
.bg-gradient-to-r { background-image: linear-gradient(to right, var(--tw-gradient-stops)); }
.bg-gradient-to-b { background-image: linear-gradient(to bottom, var(--tw-gradient-stops)); }
.from-transparent { --tw-gradient-from: transparent; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(255,255,255,0)); }
.via-red-600 { --tw-gradient-stops: var(--tw-gradient-from), #2918e3, var(--tw-gradient-to, rgba(227,24,54,0)); }
.via-gray-600 { --tw-gradient-stops: var(--tw-gradient-from), #696969, var(--tw-gradient-to, rgba(105,105,105,0)); }
.to-transparent { --tw-gradient-to: transparent; }

/* 边框宽度 */
.border-l-2 { border-left-width: 2px; }
.border-l-4 { border-left-width: 4px; }

/* 网格列数扩展 */
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }


/* 在文件末尾添加以下内容 */

/* 响应式断点 */
/* 超大屏幕 */
@media (min-width: 1536px) {
    .\32xl\:max-w-1500 { max-width: 1500px; }
}

/* 大屏幕 */
@media (max-width: 1200px) {
    .lg\:grid-cols-1 { grid-template-columns: 1fr; }
    .lg\:flex-col { flex-direction: column; }
    .lg\:text-center { text-align: center; }
    .lg\:mx-auto { margin-left: auto; margin-right: auto; }
    .lg\:gap-8 { gap: 2rem; }
    .lg\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
    .lg\:px-10 { padding-left: 2.5rem; padding-right: 2.5rem; }
    .lg\:text-4xl { font-size: 2.25rem; }
    .lg\:text-5xl { font-size: 3rem; }
}

/* 平板 */
@media (max-width: 992px) {
    .md\:grid-cols-1 { grid-template-columns: 1fr; }
    .md\:flex-col { flex-direction: column; }
    .md\:text-center { text-align: center; }
    .md\:mx-auto { margin-left: auto; margin-right: auto; }
    .md\:hidden { display: none; }
    .md\:block { display: block; }
    .md\:flex { display: flex; }
    .md\:w-full { width: 100%; }
    .md\:gap-6 { gap: 1.5rem; }
    .md\:py-20 { padding-top: 5rem; padding-bottom: 5rem; }
    .md\:px-8 { padding-left: 2rem; padding-right: 2rem; }
    .md\:text-3xl { font-size: 1.875rem; }
    .md\:text-4xl { font-size: 2.25rem; }
    .md\:mt-8 { margin-top: 2rem; }
    .md\:mb-6 { margin-bottom: 1.5rem; }
    .md\:order-1 { order: 1; }
    .md\:order-2 { order: 2; }
    .md\:h-auto { height: auto; }
}

/* 小平板/大手机 */
@media (max-width: 768px) {
    .sm\:grid-cols-1 { grid-template-columns: 1fr; }
    .sm\:flex-col { flex-direction: column; }
    .sm\:text-center { text-align: center; }
    .sm\:hidden { display: none; }
    .sm\:block { display: block; }
    .sm\:flex { display: flex; }
    .sm\:w-full { width: 100%; }
    .sm\:gap-4 { gap: 1rem; }
    .sm\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
    .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
    .sm\:text-2xl { font-size: 1.5rem; }
    .sm\:text-3xl { font-size: 1.875rem; }
    .sm\:text-xl { font-size: 1.25rem; }
    .sm\:text-lg { font-size: 1.125rem; }
    .sm\:mt-6 { margin-top: 1.5rem; }
    .sm\:mb-4 { margin-bottom: 1rem; }
    .sm\:h-12 { height: 3rem; }
    .sm\:text-xs { font-size: 0.75rem; }
    .sm\:text-sm { font-size: 0.875rem; }
    .sm\:leading-normal { line-height: 1.5; }
    .sm\:leading-tight { line-height: 1.25; }
}

/* 手机 */
@media (max-width: 480px) {
    .xs\:grid-cols-1 { grid-template-columns: 1fr; }
    .xs\:flex-col { flex-direction: column; }
    .xs\:text-center { text-align: center; }
    .xs\:hidden { display: none; }
    .xs\:block { display: block; }
    .xs\:flex { display: flex; }
    .xs\:w-full { width: 100%; }
    .xs\:gap-2 { gap: 0.5rem; }
    .xs\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
    .xs\:px-4 { padding-left: 1rem; padding-right: 1rem; }
    .xs\:text-xl { font-size: 1.25rem; }
    .xs\:text-2xl { font-size: 1.5rem; }
    .xs\:text-lg { font-size: 1.125rem; }
    .xs\:text-base { font-size: 1rem; }
    .xs\:mt-4 { margin-top: 1rem; }
    .xs\:mb-2 { margin-bottom: 0.5rem; }
    .xs\:h-10 { height: 2.5rem; }
    .xs\:text-xxs { font-size: 0.65rem; }
    .xs\:p-2 { padding: 0.5rem; }
    .xs\:py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
    .xs\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
}

/* 小手机 */
@media (max-width: 360px) {
    .xxs\:text-lg { font-size: 1.125rem; }
    .xxs\:text-xl { font-size: 1.25rem; }
    .xxs\:text-base { font-size: 1rem; }
    .xxs\:px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
    .xxs\:py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
    .xxs\:text-xs { font-size: 0.75rem; }
}

/* 移动端导航菜单 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 45;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu .flex {
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
}

.mobile-menu .nav-link {
    display: block;
    padding: 0.75rem 0;
    text-align: center;
    font-size: 1rem;
}

/* 响应式字体大小调整 */
@media (max-width: 768px) {
    .text-7xl { font-size: 3.5rem; }
    .text-6xl { font-size: 3rem; }
    .text-5xl { font-size: 2.5rem; }
    .text-4xl { font-size: 2rem; }
    .text-3xl { font-size: 1.75rem; }
    .text-2xl { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .text-7xl { font-size: 2.5rem; }
    .text-6xl { font-size: 2.25rem; }
    .text-5xl { font-size: 2rem; }
    .text-4xl { font-size: 1.75rem; }
    .text-3xl { font-size: 1.5rem; }
    .text-2xl { font-size: 1.25rem; }
    .text-9xl { font-size: 4rem; }
}

/* 响应式内边距调整 */
@media (max-width: 768px) {
    .px-14 { padding-left: 2rem; padding-right: 2rem; }
    .py-32 { padding-top: 4rem; padding-bottom: 4rem; }
    .gap-20 { gap: 3rem; }
    .gap-16 { gap: 2rem; }
}

@media (max-width: 480px) {
    .px-14 { padding-left: 1rem; padding-right: 1rem; }
    .py-32 { padding-top: 3rem; padding-bottom: 3rem; }
    .gap-20 { gap: 2rem; }
    .gap-16 { gap: 1.5rem; }
}

@keyframes scrollLeft {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

@keyframes scrollRight {
    0% {
        transform: translateX(-50%);
    }
    100% {
        transform: translateX(0);
    }
}