/* Tailwind CSS 本地版本 - 简化版 */
/* 基础重置和工具类 */

/* ===== 基础重置 ===== */
*, ::before, ::after {
  box-sizing: border-box;
  border-width: 0;
  border-style: solid;
  border-color: #e5e7eb;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  -o-tab-size: 4;
  tab-size: 4;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

body {
  margin: 0;
  line-height: inherit;
}

/* ===== 颜色变量 ===== */
:root {
  --primary: #1e40af;
  --secondary: #0f172a;
  --accent: #3b82f6;
  --light: #f8fafc;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
}

/* ===== 布局工具类 ===== */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: 1rem;
  padding-left: 1rem;
}

@media (min-width: 640px) {
  .container {
    max-width: 640px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1024px;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: 1536px;
  }
}

/* ===== Flexbox 工具类 ===== */
.flex {
  display: flex;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.flex-1 {
  flex: 1 1 0%;
}

/* ===== Grid 工具类 ===== */
.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 1024px) {
  .grid-cols-1\.lg\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.gap-3 {
  gap: 0.75rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 1.5rem;
}

.gap-8 {
  gap: 2rem;
}

/* ===== 间距工具类 ===== */
.m-0 {
  margin: 0px;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mb-12 {
  margin-bottom: 3rem;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-3 {
  margin-top: 0.75rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-12 {
  margin-top: 3rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.p-4 {
  padding: 1rem;
}

.p-6 {
  padding: 1.5rem;
}

.py-1 {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.py-3 {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.py-4 {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.py-12 {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ===== 文本工具类 ===== */
.text-center {
  text-align: center;
}

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

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

.font-bold {
  font-weight: 700;
}

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.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-4xl {
  font-size: 2.25rem;
  line-height: 2.5rem;
}

.text-5xl {
  font-size: 3rem;
  line-height: 1;
}

@media (min-width: 768px) {
  .text-4xl\.md\:text-5xl {
    font-size: 3rem;
    line-height: 1;
  }
  
  .p-6\.md\:p-8 {
    padding: 2rem;
  }
}

/* ===== 颜色工具类 ===== */
.text-primary {
  color: var(--primary);
}

.text-secondary {
  color: var(--secondary);
}

.text-accent {
  color: var(--accent);
}

.text-gray-50 {
  color: var(--gray-50);
}

.text-gray-500 {
  color: var(--gray-500);
}

.text-gray-600 {
  color: var(--gray-600);
}

.text-gray-700 {
  color: var(--gray-700);
}

.text-white {
  color: var(--white);
}

.bg-primary {
  background-color: var(--primary);
}

.bg-primary\/10 {
  background-color: rgba(30, 64, 175, 0.1);
}

.bg-white {
  background-color: var(--white);
}

.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-blue-50 {
  background-color: var(--blue-50);
}

/* ===== 边框工具类 ===== */
.border {
  border-width: 1px;
}

.border-b {
  border-bottom-width: 1px;
}

.border-gray-100 {
  border-color: var(--gray-100);
}

.border-gray-200 {
  border-color: var(--gray-200);
}

.rounded {
  border-radius: 0.25rem;
}

.rounded-lg {
  border-radius: 0.5rem;
}

.rounded-xl {
  border-radius: 0.75rem;
}

.rounded-2xl {
  border-radius: 1rem;
}

.rounded-full {
  border-radius: 9999px;
}

/* ===== 阴影工具类 ===== */
.shadow-card {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.shadow-hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ===== 显示/隐藏工具类 ===== */
.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

/* ===== 尺寸工具类 ===== */
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.h-10 {
  height: 2.5rem;
}

.h-12 {
  height: 3rem;
}

.h-40 {
  height: 10rem;
}

.h-48 {
  height: 12rem;
}

.h-96 {
  height: 24rem;
}

.max-w-2xl {
  max-width: 42rem;
}

.max-w-4xl {
  max-width: 56rem;
}

.max-w-6xl {
  max-width: 72rem;
}

/* ===== 位置工具类 ===== */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

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

.top-0 {
  top: 0px;
}

.right-0 {
  right: 0px;
}

.bottom-0 {
  bottom: 0px;
}

.left-0 {
  left: 0px;
}

.bottom-4 {
  bottom: 1rem;
}

.left-4 {
  left: 1rem;
}

.right-4 {
  right: 1rem;
}

/* ===== 变换工具类 ===== */
.transform {
  transform: translateZ(0);
}

.-translate-y-1 {
  transform: translateY(-0.25rem);
}

.-translate-x-1\/2 {
  transform: translateX(-50%);
}

.-translate-y-1\/2 {
  transform: translateY(-50%);
}

/* ===== 动画工具类 ===== */
.transition-all {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 300ms;
}

.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: 300ms;
}

.transition-transform {
  transition-property: transform;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 300ms;
}

.duration-300 {
  transition-duration: 300ms;
}

.duration-500 {
  transition-duration: 500ms;
}

.duration-600 {
  transition-duration: 600ms;
}

/* ===== 自定义工具类 ===== */
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.contact-item:hover {
  background-color: white;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.contact-icon {
  width: 3rem;
  height: 3rem;
  background-color: var(--primary);
  color: white;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

.contact-icon:hover {
  transform: scale(1.1);
}

.contact-text {
  flex: 1 1 0%;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
}

.contact-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--secondary);
}

.contact-link {
  color: var(--accent);
  text-decoration: none;
}

.contact-link:hover {
  color: var(--primary);
  text-decoration: underline;
  transition: color 0.3s ease;
}

.site-card {
  background-color: white;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.site-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  transform: translateY(-0.25rem);
}

.site-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-100);
}

.site-icon {
  width: 2.5rem;
  height: 2.5rem;
  background-color: rgba(30, 64, 175, 0.1);
  color: var(--primary);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary);
}

.site-description {
  color: var(--gray-600);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.tab-button {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.tab-button.active {
  background-color: var(--primary);
  color: white;
}

.tab-button:not(.active) {
  background-color: var(--gray-100);
  color: var(--gray-600);
}

.tab-button:not(.active):hover {
  background-color: var(--gray-200);
}

/* ===== 特殊效果 ===== */
.animate-ping {
  animation: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

/* ===== 响应式工具类 ===== */
@media (min-width: 640px) {
  .md\\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .md\\:text-5xl {
    font-size: 3rem;
    line-height: 1;
  }
  
  .md\\:p-8 {
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  .lg\\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}