/* 灵侣展示网站 - 主样式文件 v2.0 - 响应式设计更新 */

/* CSS 变量定义 */
:root {
  /* 颜色系统 */
  --primary-color: #ff6b9d;
  --primary-dark: #e55a8a;
  --secondary-color: #4ecdc4;
  --accent-color: #45b7aa;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --text-light: #bdc3c7;
  --background-primary: #ffffff;
  --background-secondary: #f8f9fa;
  --background-accent: #fef7f7;
  --border-color: #e9ecef;
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);

  /* 字体系统 */
  --font-size-xs: 0.75rem;
  /* 12px */
  --font-size-sm: 0.875rem;
  /* 14px */
  --font-size-base: 1rem;
  /* 16px */
  --font-size-lg: 1.125rem;
  /* 18px */
  --font-size-xl: 1.25rem;
  /* 20px */
  --font-size-2xl: 1.5rem;
  /* 24px */
  --font-size-3xl: 1.875rem;
  /* 30px */
  --font-size-4xl: 2.25rem;
  /* 36px */
  --font-size-5xl: 3rem;
  /* 48px */

  /* 间距系统 */
  --spacing-xs: 0.25rem;
  /* 4px */
  --spacing-sm: 0.5rem;
  /* 8px */
  --spacing-md: 1rem;
  /* 16px */
  --spacing-lg: 1.5rem;
  /* 24px */
  --spacing-xl: 2rem;
  /* 32px */
  --spacing-2xl: 3rem;
  /* 48px */
  --spacing-3xl: 4rem;
  /* 64px */
  --spacing-4xl: 6rem;
  /* 96px */

  /* 断点系统 */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-2xl: 1400px;

  /* 动画系统 */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;

  /* 边框圆角 */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
}

/* 基础容器样式 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 响应式容器 */
@media (min-width: 576px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-2xl);
  }
}

/* 网格系统基础 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* 响应式网格系统 */
@media (max-width: 575px) {

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (min-width: 576px) and (max-width: 767px) {

  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .grid-cols-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 高级网格布局 */
.grid-auto-fit {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.grid-auto-fill {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

/* 响应式网格间距 */
@media (max-width: 767px) {
  .grid {
    gap: var(--spacing-md);
  }

  .grid-auto-fit,
  .grid-auto-fill {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* 网格对齐工具类 */
.grid-items-center {
  align-items: center;
}

.grid-items-start {
  align-items: start;
}

.grid-items-end {
  align-items: end;
}

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

.grid-content-start {
  justify-content: start;
}

.grid-content-end {
  justify-content: end;
}

/* 网格跨度工具类 */
.col-span-1 {
  grid-column: span 1;
}

.col-span-2 {
  grid-column: span 2;
}

.col-span-3 {
  grid-column: span 3;
}

.col-span-4 {
  grid-column: span 4;
}

.col-span-full {
  grid-column: 1 / -1;
}

.row-span-1 {
  grid-row: span 1;
}

.row-span-2 {
  grid-row: span 2;
}

.row-span-3 {
  grid-row: span 3;
}

.row-span-4 {
  grid-row: span 4;
}

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

.flex-col {
  flex-direction: column;
}

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

.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-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

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

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

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

.text-xs {
  font-size: var(--font-size-xs);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-base {
  font-size: var(--font-size-base);
}

.text-lg {
  font-size: var(--font-size-lg);
}

.text-xl {
  font-size: var(--font-size-xl);
}

.text-2xl {
  font-size: var(--font-size-2xl);
}

.text-3xl {
  font-size: var(--font-size-3xl);
}

.text-4xl {
  font-size: var(--font-size-4xl);
}

.text-5xl {
  font-size: var(--font-size-5xl);
}

.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;
}

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

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

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

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

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

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

/* 间距工具类 */
.m-0 {
  margin: 0;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

.ml-0 {
  margin-left: 0;
}

.mr-0 {
  margin-right: 0;
}

.p-0 {
  padding: 0;
}

.pt-0 {
  padding-top: 0;
}

.pb-0 {
  padding-bottom: 0;
}

.pl-0 {
  padding-left: 0;
}

.pr-0 {
  padding-right: 0;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mt-2xl {
  margin-top: var(--spacing-2xl);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mb-2xl {
  margin-bottom: var(--spacing-2xl);
}

.pt-sm {
  padding-top: var(--spacing-sm);
}

.pt-md {
  padding-top: var(--spacing-md);
}

.pt-lg {
  padding-top: var(--spacing-lg);
}

.pt-xl {
  padding-top: var(--spacing-xl);
}

.pt-2xl {
  padding-top: var(--spacing-2xl);
}

.pb-sm {
  padding-bottom: var(--spacing-sm);
}

.pb-md {
  padding-bottom: var(--spacing-md);
}

.pb-lg {
  padding-bottom: var(--spacing-lg);
}

.pb-xl {
  padding-bottom: var(--spacing-xl);
}

.pb-2xl {
  padding-bottom: var(--spacing-2xl);
}

/* 基础组件样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
  background-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* 卡片组件 */
.card {
  background: var(--background-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

/* 响应式图片 */
.img-responsive {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
}

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

.visible {
  display: block;
}

/* 响应式显示工具类 */
@media (max-width: 575px) {
  .hidden-xs {
    display: none !important;
  }

  .visible-xs {
    display: block !important;
  }
}

@media (min-width: 576px) and (max-width: 767px) {
  .hidden-sm {
    display: none !important;
  }

  .visible-sm {
    display: block !important;
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .hidden-md {
    display: none !important;
  }

  .visible-md {
    display: block !important;
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .hidden-lg {
    display: none !important;
  }

  .visible-lg {
    display: block !important;
  }
}

@media (min-width: 1200px) {
  .hidden-xl {
    display: none !important;
  }

  .visible-xl {
    display: block !important;
  }
}

/* 传统响应式显示 */
@media (max-width: 767px) {
  .hidden-mobile {
    display: none !important;
  }

  .visible-mobile {
    display: block !important;
  }
}

@media (min-width: 768px) {
  .hidden-desktop {
    display: none !important;
  }

  .visible-desktop {
    display: block !important;
  }
}

/* 响应式文本对齐 */
@media (max-width: 767px) {
  .text-center-mobile {
    text-align: center;
  }

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

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

@media (min-width: 768px) {
  .text-center-desktop {
    text-align: center;
  }

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

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

/* 响应式间距工具类 */
@media (max-width: 767px) {
  .mt-sm-mobile {
    margin-top: var(--spacing-sm);
  }

  .mt-md-mobile {
    margin-top: var(--spacing-md);
  }

  .mt-lg-mobile {
    margin-top: var(--spacing-lg);
  }

  .mb-sm-mobile {
    margin-bottom: var(--spacing-sm);
  }

  .mb-md-mobile {
    margin-bottom: var(--spacing-md);
  }

  .mb-lg-mobile {
    margin-bottom: var(--spacing-lg);
  }

  .pt-sm-mobile {
    padding-top: var(--spacing-sm);
  }

  .pt-md-mobile {
    padding-top: var(--spacing-md);
  }

  .pt-lg-mobile {
    padding-top: var(--spacing-lg);
  }

  .pb-sm-mobile {
    padding-bottom: var(--spacing-sm);
  }

  .pb-md-mobile {
    padding-bottom: var(--spacing-md);
  }

  .pb-lg-mobile {
    padding-bottom: var(--spacing-lg);
  }
}

/* 响应式宽度工具类 */
.w-full {
  width: 100%;
}

.w-auto {
  width: auto;
}

.w-1\/2 {
  width: 50%;
}

.w-1\/3 {
  width: 33.333333%;
}

.w-2\/3 {
  width: 66.666667%;
}

.w-1\/4 {
  width: 25%;
}

.w-3\/4 {
  width: 75%;
}

@media (max-width: 767px) {
  .w-full-mobile {
    width: 100%;
  }

  .w-auto-mobile {
    width: auto;
  }
}

/* 响应式高度工具类 */
.h-auto {
  height: auto;
}

.h-full {
  height: 100%;
}

.h-screen {
  height: 100vh;
}

/* 现代CSS特性 */
.aspect-square {
  aspect-ratio: 1 / 1;
}

.aspect-video {
  aspect-ratio: 16 / 9;
}

.aspect-photo {
  aspect-ratio: 4 / 3;
}

/* 容器查询支持 */
@container (max-width: 400px) {
  .container-sm .card {
    padding: var(--spacing-md);
  }
}

/* 滚动行为 */
.scroll-smooth {
  scroll-behavior: smooth;
}

.scroll-auto {
  scroll-behavior: auto;
}

/* 现代布局工具 */
.place-center {
  place-items: center;
}

.place-start {
  place-items: start;
}

.place-end {
  place-items: end;
}

/* 溢出处理 */
.overflow-hidden {
  overflow: hidden;
}

.overflow-auto {
  overflow: auto;
}

.overflow-scroll {
  overflow: scroll;
}

.overflow-x-hidden {
  overflow-x: hidden;
}

.overflow-y-hidden {
  overflow-y: hidden;
}

.overflow-x-auto {
  overflow-x: auto;
}

.overflow-y-auto {
  overflow-y: auto;
}

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

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

/* Z-index 工具类 */
.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;
}

/* 高级动画系统 */
.fade-in {
  animation: fadeIn var(--transition-slow) ease-in-out;
}

.fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

.fade-in-down {
  animation: fadeInDown var(--transition-slow) ease-out;
}

.fade-in-left {
  animation: fadeInLeft var(--transition-slow) ease-out;
}

.fade-in-right {
  animation: fadeInRight var(--transition-slow) ease-out;
}

.slide-up {
  animation: slideUp var(--transition-base) ease-out;
}

.slide-down {
  animation: slideDown var(--transition-base) ease-out;
}

.zoom-in {
  animation: zoomIn var(--transition-base) ease-out;
}

.bounce-in {
  animation: bounceIn var(--transition-slow) ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

.float {
  animation: float 3s ease-in-out infinite;
}

/* 动画关键帧 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-30px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }

  50% {
    opacity: 1;
    transform: scale(1.05);
  }

  70% {
    transform: scale(0.9);
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* 动画延迟工具类 */
.delay-100 {
  animation-delay: 0.1s;
}

.delay-200 {
  animation-delay: 0.2s;
}

.delay-300 {
  animation-delay: 0.3s;
}

.delay-500 {
  animation-delay: 0.5s;
}

.delay-700 {
  animation-delay: 0.7s;
}

.delay-1000 {
  animation-delay: 1s;
}

/* 动画持续时间工具类 */
.duration-150 {
  animation-duration: 0.15s;
}

.duration-300 {
  animation-duration: 0.3s;
}

.duration-500 {
  animation-duration: 0.5s;
}

.duration-700 {
  animation-duration: 0.7s;
}

.duration-1000 {
  animation-duration: 1s;
}

/* 过渡效果工具类 */
.transition-all {
  transition: all var(--transition-base);
}

.transition-colors {
  transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.transition-opacity {
  transition: opacity var(--transition-base);
}

.transition-transform {
  transition: transform var(--transition-base);
}

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

.scale-95 {
  transform: scale(0.95);
}

.scale-100 {
  transform: scale(1);
}

.scale-105 {
  transform: scale(1.05);
}

.scale-110 {
  transform: scale(1.1);
}

.rotate-45 {
  transform: rotate(45deg);
}

.rotate-90 {
  transform: rotate(90deg);
}

.rotate-180 {
  transform: rotate(180deg);
}

/* 悬停效果 */
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(255, 107, 157, 0.3);
}

/* 焦点效果 */
.focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.3);
}

/* 滤镜效果 */
.blur-sm {
  filter: blur(4px);
}

.blur {
  filter: blur(8px);
}

.blur-lg {
  filter: blur(16px);
}

.grayscale {
  filter: grayscale(100%);
}

.sepia {
  filter: sepia(100%);
}

.brightness-50 {
  filter: brightness(0.5);
}

.brightness-75 {
  filter: brightness(0.75);
}

.brightness-125 {
  filter: brightness(1.25);
}

.brightness-150 {
  filter: brightness(1.5);
}

/* 背景效果 */
.bg-gradient-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.bg-gradient-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.bg-gradient-radial {
  background: radial-gradient(circle, var(--primary-color), var(--primary-dark));
}

/* 文本效果 */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.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, 0.2);
}

/* 基础页面布局 */
body {
  background-color: var(--background-primary);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* 页面区块基础样式 */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

section:nth-child(even) {
  background-color: var(--background-secondary);
}

/* 响应式区块间距 */
@media (max-width: 767px) {
  section {
    padding: var(--spacing-2xl) 0;
  }
}

/* Header 样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-light);
}

.nav {
  padding: var(--spacing-md) 0;
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand h1 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  color: var(--text-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* 移动端导航 */
@media (max-width: 767px) {
  .nav-menu {
    display: none;
  }

  .nav-brand h1 {
    font-size: var(--font-size-lg);
  }
}

/* Hero 区块样式 */
.hero {
  padding-top: calc(var(--spacing-4xl) + 80px);
  padding-bottom: var(--spacing-4xl);
  background: linear-gradient(135deg, var(--background-accent) 0%, var(--background-primary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ff6b9d" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-content h2 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.feature-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-light);
  transition: all var(--transition-base);
}

.feature-badge:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.badge-icon {
  font-size: var(--font-size-lg);
}

.badge-text {
  font-weight: 500;
  color: var(--text-primary);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

/* 响应式 Hero */
@media (max-width: 767px) {
  .hero {
    padding-top: calc(var(--spacing-3xl) + 60px);
    padding-bottom: var(--spacing-3xl);
  }

  .hero-content h2 {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-features {
    gap: var(--spacing-md);
  }

  .feature-badge {
    padding: var(--spacing-xs) var(--spacing-md);
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }
}

/* Section Header 样式 */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 767px) {
  .section-header h2 {
    font-size: var(--font-size-2xl);
  }

  .section-subtitle {
    font-size: var(--font-size-base);
  }
}

/* Features 区块样式 */
.features {
  background: var(--background-primary);
}

.features-grid {
  gap: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  display: block;
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  text-align: left;
  margin: 0;
  padding: 0;
}

.feature-list li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Screenshots 区块样式 */
.screenshots {
  background: var(--background-secondary);
}

.screenshots-grid {
  gap: var(--spacing-xl);
}

.screenshot-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow-light);
  transition: all var(--transition-base);
  cursor: pointer;
}

.screenshot-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
}

.screenshot-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 9 / 16;
  /* 手机屏幕比例 */
}

.screenshot-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  opacity: 0;
  transition: opacity 0.3s ease-in-out, transform var(--transition-slow);
}

.screenshot-img.loaded {
  opacity: 1;
}

background-size: 200% 100%;
animation: loading 1.5s infinite;
}

.screenshot-img.loaded {
  opacity: 1;
  animation: none;
  background: none;
}

.screenshot-img.error {
  opacity: 0.3;
  background: #f8f9fa;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

.screenshot-item:hover .screenshot-img {
  transform: scale(1.05);
}

.screenshot-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: var(--spacing-xl);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.screenshot-item:hover .screenshot-overlay {
  transform: translateY(0);
}

.screenshot-overlay h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.screenshot-overlay p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin: 0;
}

/* 图片放大查看功能 */
.image-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.image-modal.active {
  opacity: 1;
  visibility: visible;
}

.image-modal-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-modal-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-heavy);
  transform: scale(0.8);
  transition: transform var(--transition-base);
}

.image-modal.active .image-modal-img {
  transform: scale(1);
}

.image-modal-close {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: var(--font-size-xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.image-modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.image-modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: var(--font-size-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.image-modal-nav:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

.image-modal-nav.prev {
  left: -80px;
}

.image-modal-nav.next {
  right: -80px;
}

.image-modal-info {
  position: absolute;
  bottom: -60px;
  left: 0;
  right: 0;
  text-align: center;
  color: white;
}

.image-modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.image-modal-description {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  margin: 0;
}

/* 响应式图片模态框 */
@media (max-width: 767px) {
  .image-modal-content {
    max-width: 95%;
    max-height: 85%;
  }

  .image-modal-close {
    top: -40px;
    right: -10px;
    width: 35px;
    height: 35px;
  }

  .image-modal-nav {
    width: 40px;
    height: 40px;
  }

  .image-modal-nav.prev {
    left: -60px;
  }

  .image-modal-nav.next {
    right: -60px;
  }

  .image-modal-info {
    bottom: -80px;
    padding: 0 var(--spacing-md);
  }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
  .image-modal-nav.prev {
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
  }

  .image-modal-nav.next {
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
  }

  .image-modal-close {
    top: 10px;
    right: 10px;
  }

  .image-modal-info {
    bottom: 10px;
    left: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
  }
}

/* 图片懒加载占位符 */
.image-placeholder {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: var(--font-size-lg);
  min-height: 200px;
}

.image-placeholder::before {
  content: '📷';
  font-size: 2rem;
  opacity: 0.5;
}

/* 图片加载状态 */
.image-loading {
  position: relative;
  overflow: hidden;
}

.image-loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }

  100% {
    left: 100%;
  }
}

/* 图片优化工具类 */
.img-optimized {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.img-smooth {
  image-rendering: auto;
}

/* 图片缩放效果 */
.img-zoom-hover {
  overflow: hidden;
}

.img-zoom-hover img {
  transition: transform var(--transition-slow);
}

.img-zoom-hover:hover img {
  transform: scale(1.1);
}

/* 图片滤镜效果 */
.img-filter-none {
  filter: none;
}

.img-filter-blur {
  filter: blur(4px);
}

.img-filter-brightness {
  filter: brightness(1.2);
}

.img-filter-contrast {
  filter: contrast(1.2);
}

.img-filter-grayscale {
  filter: grayscale(100%);
}

.img-filter-sepia {
  filter: sepia(100%);
}

.img-filter-vintage {
  filter: sepia(0.5) contrast(1.2) brightness(1.1);
}

/* 图片边框效果 */
.img-border-rounded {
  border-radius: var(--border-radius-md);
}

.img-border-circle {
  border-radius: 50%;
}

.img-border-shadow {
  box-shadow: var(--shadow-medium);
}

/* 图片网格布局优化 */
.image-grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.image-grid-masonry {
  columns: 3;
  column-gap: var(--spacing-md);
  break-inside: avoid;
}

@media (max-width: 991px) {
  .image-grid-masonry {
    columns: 2;
  }
}

@media (max-width: 767px) {
  .image-grid-masonry {
    columns: 1;
  }

  .image-grid {
    grid-template-columns: 1fr;
  }
}

/* Feature Highlight 特殊样式 */
.feature-highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

.highlight-content {
  text-align: center;
  padding: var(--spacing-xl);
}

.highlight-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.highlight-content h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.highlight-content p {
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.highlight-list {
  list-style: none;
  text-align: left;
}

.highlight-list li {
  padding: var(--spacing-xs) 0;
  position: relative;
  padding-left: var(--spacing-lg);
}

.highlight-list li::before {
  content: '★';
  position: absolute;
  left: 0;
  color: rgba(255, 255, 255, 0.8);
}

/* Tech Stack 区块样式 */
.tech-stack {
  background: var(--background-primary);
}

.tech-overview {
  margin-bottom: var(--spacing-3xl);
}

.architecture-diagram {
  background: var(--background-secondary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.architecture-diagram h3 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-2xl);
}

.arch-layers {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.arch-layer {
  background: white;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  border-left: 4px solid var(--primary-color);
}

.arch-layer h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.tech-tag {
  background: var(--background-accent);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.tech-grid {
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.tech-category {
  text-align: center;
}

.tech-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.tech-category h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.tech-list {
  list-style: none;
  text-align: left;
}

.tech-list li {
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.tech-list li:last-child {
  border-bottom: none;
}

.tech-list strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Tech Highlights */
.tech-highlights {
  background: var(--background-secondary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
}

.tech-highlights h3 {
  text-align: center;
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xl);
}

.highlights-grid {
  gap: var(--spacing-lg);
}

.highlight-item {
  text-align: center;
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-light);
}

.highlight-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.highlight-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Footer 样式 */
.footer {
  background: var(--text-primary);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  color: var(--primary-color);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

.footer-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.footer-badges .badge {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-color);
}

.contact-info p {
  margin-bottom: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-copyright p,
.footer-tech p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Back to Top 按钮 */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: bold;
  box-shadow: var(--shadow-medium);
  transition: all var(--transition-base);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-heavy);
}

/* 响应式调整 */
@media (max-width: 767px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .back-to-top {
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 45px;
    height: 45px;
  }
}

/* 标题样式 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

/* 响应式标题 */
@media (max-width: 767px) {
  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }
}

/* 段落样式 */
p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

/* 链接样式 */
a {
  color: var(--primary-color);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* 基础表单样式 */
input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.1);
}

/* 高级CSS Grid布局模式 */
.grid-layout-hero {
  display: grid;
  grid-template-areas:
    "content content"
    "image image";
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 768px) {
  .grid-layout-hero {
    grid-template-areas: "content image";
    grid-template-columns: 1fr 1fr;
  }
}

.grid-layout-feature {
  display: grid;
  grid-template-areas:
    "icon"
    "title"
    "description"
    "list";
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .grid-layout-feature {
    grid-template-areas:
      "icon title"
      "description description"
      "list list";
    grid-template-columns: auto 1fr;
  }
}

/* CSS Grid区域工具类 */
.grid-area-content {
  grid-area: content;
}

.grid-area-image {
  grid-area: image;
}

.grid-area-icon {
  grid-area: icon;
}

.grid-area-title {
  grid-area: title;
}

.grid-area-description {
  grid-area: description;
}

.grid-area-list {
  grid-area: list;
}

/* 现代卡片布局 */
.card-modern {
  background: var(--background-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.card-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.card-modern:hover::before {
  transform: scaleX(1);
}

.card-modern:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--primary-color);
}

/* 玻璃态效果 */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-lg);
}

.glass-dark {
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
}

/* 新拟态效果 */
.neumorphism {
  background: var(--background-secondary);
  border-radius: var(--border-radius-lg);
  box-shadow:
    8px 8px 16px rgba(0, 0, 0, 0.1),
    -8px -8px 16px rgba(255, 255, 255, 0.8);
}

.neumorphism-inset {
  background: var(--background-secondary);
  border-radius: var(--border-radius-lg);
  box-shadow:
    inset 8px 8px 16px rgba(0, 0, 0, 0.1),
    inset -8px -8px 16px rgba(255, 255, 255, 0.8);
}

/* 高级按钮样式 */
.btn-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn-gradient:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--primary-color);
  transition: width var(--transition-base);
  z-index: -1;
}

.btn-outline:hover {
  color: white;
}

.btn-outline:hover::before {
  width: 100%;
}

/* 响应式字体大小 */
.text-responsive-xs {
  font-size: clamp(0.75rem, 2vw, 0.875rem);
}

.text-responsive-sm {
  font-size: clamp(0.875rem, 2.5vw, 1rem);
}

.text-responsive-base {
  font-size: clamp(1rem, 3vw, 1.125rem);
}

.text-responsive-lg {
  font-size: clamp(1.125rem, 3.5vw, 1.25rem);
}

.text-responsive-xl {
  font-size: clamp(1.25rem, 4vw, 1.5rem);
}

.text-responsive-2xl {
  font-size: clamp(1.5rem, 5vw, 2rem);
}

.text-responsive-3xl {
  font-size: clamp(1.875rem, 6vw, 2.5rem);
}

.text-responsive-4xl {
  font-size: clamp(2.25rem, 7vw, 3rem);
}

.text-responsive-5xl {
  font-size: clamp(3rem, 8vw, 4rem);
}

/* 响应式间距 */
.spacing-responsive-sm {
  padding: clamp(0.5rem, 2vw, 1rem);
}

.spacing-responsive-md {
  padding: clamp(1rem, 3vw, 2rem);
}

.spacing-responsive-lg {
  padding: clamp(1.5rem, 4vw, 3rem);
}

.spacing-responsive-xl {
  padding: clamp(2rem, 5vw, 4rem);
}

/* 现代滚动条样式 */
.custom-scrollbar::-webkit-scrollbar {
  width: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: var(--background-secondary);
  border-radius: var(--border-radius-sm);
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--border-radius-sm);
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* 选择文本样式 */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}

/* 占位符样式 */
::placeholder {
  color: var(--text-light);
  opacity: 1;
}

::-webkit-input-placeholder {
  color: var(--text-light);
}

::-moz-placeholder {
  color: var(--text-light);
  opacity: 1;
}

:-ms-input-placeholder {
  color: var(--text-light);
}

/* 打印样式 */
@media print {
  .no-print {
    display: none !important;
  }

  .print-only {
    display: block !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .card {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
  :root {
    --text-primary: #000000;
    --text-secondary: #333333;
    --background-primary: #ffffff;
    --background-secondary: #f0f0f0;
    --border-color: #000000;
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-light: #999999;
    --background-primary: #1a1a1a;
    --background-secondary: #2d2d2d;
    --background-accent: #2a1f1f;
    --border-color: #404040;
  }

  .card {
    background: var(--background-secondary);
    border-color: var(--border-color);
  }

  .glass {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
  }
}

/* 性能优化 */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

.will-change-scroll {
  will-change: scroll-position;
}

/* GPU加速 */
.gpu-accelerated {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}

/* 内容可见性优化 */
.content-visibility-auto {
  content-visibility: auto;
  contain-intrinsic-size: 0 500px;
}

/* 现代CSS特性检测 */
@supports (backdrop-filter: blur(10px)) {
  .supports-backdrop-blur {
    backdrop-filter: blur(10px);
  }
}

@supports (display: grid) {
  .supports-grid {
    display: grid;
  }
}

@supports (gap: 1rem) {
  .supports-gap {
    gap: 1rem;
  }
}

/* 辅助功能增强 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.focus-visible:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* 跳过链接 */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* 
图片性能优化 */
.screenshot-img {
  /* 启用硬件加速 */
  transform: translateZ(0);
  will-change: transform, opacity;

  /* 图片渲染优化 */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* 图片加载状态指示器 */
.image-loading-indicator {
  position: absolute;
  top: 50%;
  left: 50n: spin 1s linear infinite;
  z-index: 10;
}

@keyframes spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }

  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* 图片错误状态 */
.screenshot-img.error {
  background: var(--background-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.screenshot-img.error::before {
  content: '图片加载失败';
}

/* 图片预加载优化 */
.preload-image {
  position: absolute;
  top: -9999px;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* 图片容器优化 */
.screenshot-wrapper {
  /* 防止布局偏移 */
  contain: layout style paint;

  /* 优化重绘性能 */
  isolation: isolate;
}

/* 图片模态框性能优化 */
.image-modal {
  /* 启用硬件加速 */
  transform: translateZ(0);
  will-change: opacity, visibility;

  /* 优化模糊效果性能 */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.image-modal-img {
  /* 启用硬件加速 */
  transform: translateZ(0);
  will-change: transform;

  /* 图片平滑缩放 */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: auto;
}

/* 减少动画期间的重绘 */
.screenshot-item:hover {
  will-change: transform, box-shadow;
}

.screenshot-item:not(:hover) {
  will-change: auto;
}

/* 图片网格性能优化 */
.screenshots-grid {
  /* 启用GPU加速 */
  transform: translateZ(0);

  /* 优化网格布局性能 */
  contain: layout style;
}

/* 响应式图片优化 */
@media (max-width: 767px) {
  .screenshot-wrapper {
    /* 移动端优化宽高比 */
    aspect-ratio: 9 / 16;
  }

  .screenshot-img {
    /* 移动端图片渲染优化 */
    image-rendering: auto;
  }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
  .screenshot-img {
    /* 高分辨率屏幕图片渲染优化 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
  .image-modal {
    background: rgba(0, 0, 0, 0.95);
  }

  .image-loading-indicator {
    border-color: #444;
    border-top-color: var(--primary-color);
  }
}

/* 减少动画偏好设置支持 */
@media (prefers-reduced-motion: reduce) {

  .screenshot-img,
  .screenshot-item,
  .image-modal,
  .image-modal-img {
    transition: none;
    animation: none;
  }

  .lazy-loading {
    animation: none;
  }
}

/* 打印样式优化 */
@media print {
  .image-modal {
    display: none;
  }

  .screenshot-img {
    max-width: 100%;
    height: auto;
    page-break-inside: avoid;
  }
}

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animatio border-radius: 50 transform: tra