/* ========================================
   字体定义 (Fonts)
======================================== */
/* inter-300 - latin */
@font-face {
  font-display: swap;
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  src: url('../fonts/inter-v20-latin-300.woff2') format('woff2');
}
/* inter-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/inter-v20-latin-regular.woff2') format('woff2');
}
/* inter-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/inter-v20-latin-500.woff2') format('woff2');
}
/* inter-600 - latin */
@font-face {
  font-display: swap;
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/inter-v20-latin-600.woff2') format('woff2'); 
}
/* inter-700 - latin */
@font-face {
  font-display: swap;
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/inter-v20-latin-700.woff2') format('woff2');
}

/* playfair-display-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/playfair-display-v40-latin-regular.woff2') format('woff2');
}
/* playfair-display-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/playfair-display-v40-latin-500.woff2') format('woff2');
}
/* playfair-display-600 - latin */
@font-face {
  font-display: swap;
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/playfair-display-v40-latin-600.woff2') format('woff2');
}
/* playfair-display-700 - latin */
@font-face {
  font-display: swap;
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/playfair-display-v40-latin-700.woff2') format('woff2');
}

/* ========================================
   CSS 变量和重置
======================================== */
:root {
  /* 颜色 */
  --color-primary: #5c4a3d;
  --color-primary-dark: #4a3b30;
  --color-primary-light: #7d6b5d;
  --color-accent: #8b7355;
  --color-background: #fafaf9;
  --color-foreground: #1a1a1a;
  --color-muted: #6b6b6b;
  --color-border: #e5e5e5;
  --color-card: #ffffff;
  --color-overlay: rgba(0, 0, 0, 0.5);
  
  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* 过渡效果 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 容器 */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-foreground);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* 文本选择 */
::selection {
  background-color: rgba(92, 74, 61, 0.3);
  color: var(--color-foreground);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #bbb;
}

::-webkit-scrollbar-thumb:hover {
  background: #999;
}

/* ========================================
   工具类
======================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.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;
}

/* ========================================
   按钮样式
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-outline {
  background-color: transparent;
  color: #fff;
  border-color: #fff;
}

.btn-outline:hover {
  background-color: #fff;
  color: var(--color-foreground);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 0.9375rem;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.8125rem;
}

.btn-full {
  width: 100%;
}

/* ========================================
   区域样式
======================================== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.section-subtitle {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-foreground);
  margin-bottom: var(--spacing-md);
}

.section-description {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ========================================
   头部
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: all var(--transition-base);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.logo-image {
  height: 50px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--transition-base);
}

.header.scrolled .logo-image {
  opacity: 0.9;
}

.nav-desktop {
  display: none;
  gap: 3.5rem;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header.scrolled .nav-link {
  color: var(--color-foreground);
}

.header-cta {
  display: none;
}

.header.scrolled .header-cta {
  display: inline-flex;
}

/* 菜单切换按钮 */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
}

.menu-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}

.menu-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #fff;
  transition: all var(--transition-base);
}

.header.scrolled .menu-line {
  background-color: var(--color-foreground);
}

.menu-toggle.active .menu-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .menu-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-foreground);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: transparent;
  border: none;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-base);
  z-index: 1000;
}

.mobile-menu.active .mobile-menu-close {
  opacity: 1;
  transform: scale(1);
  transition-delay: 0.2s;
}

.mobile-menu-close:hover {
  opacity: 0.7;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.mobile-nav-link {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: #fff;
  padding: 0.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

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

.mobile-menu.active .mobile-nav-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-nav-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-nav-link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-nav-link:nth-child(4) { transition-delay: 0.25s; }

.mobile-nav-link:hover {
  color: var(--color-accent);
}

.mobile-cta {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
  transition-delay: 0.3s;
}

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

/* ========================================
   视频区域
======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.4) 0%,
    rgba(0, 0, 0, 0.3) 50%,
    rgba(0, 0, 0, 0.5) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  max-width: 1200px;
  padding: 0 var(--container-padding);
}

.hero-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  opacity: 0.9;
}

.hero-buttons {
  display: none;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.scroll-indicator:hover {
  opacity: 1;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid currentColor;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background-color: currentColor;
  border-radius: 2px;
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(6px); }
}

.scroll-text {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ========================================
   精选区域
======================================== */
.featured {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-card);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.featured-card {
  background-color: var(--color-background);
  overflow: hidden;
}

.featured-image-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.featured-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.featured-card:hover .featured-overlay {
  opacity: 1;
}

.featured-content {
  padding: var(--spacing-md);
}

.featured-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.featured-text {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ========================================
   体验区域
======================================== */
.experience {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-background);
}

.experience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.experience-card {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.experience-card:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.experience-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background-color: var(--color-background);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-base);
}

.experience-card:hover .experience-icon {
  background-color: var(--color-primary);
  color: #fff;
}

.experience-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.experience-text {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ========================================
   关于我们区域
======================================== */
.about {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-card);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.about-stats {
  position: absolute;
  bottom: -1.5rem;
  right: 1rem;
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  gap: var(--spacing-lg);
}

.stat-item {
  text-align: center;
  min-width: 120px;
}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 500;
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.9;
}

.stat-divider {
  width: 1px;
  background-color: rgba(255, 255, 255, 0.3);
}

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

.about-text {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.about-features {
  margin: var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
}

.about-feature svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ========================================
   作品集区域
======================================== */
.portfolio {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-background);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.portfolio-card {
  overflow: hidden;
}

.portfolio-image-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.portfolio-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-image {
  transform: scale(1.1);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.8) 0%,
    rgba(0, 0, 0, 0.2) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-info {
  color: #fff;
  margin-bottom: var(--spacing-sm);
}

.portfolio-category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}

.portfolio-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin: var(--spacing-xs) 0;
}

.portfolio-location {
  font-size: 0.875rem;
  opacity: 0.8;
}

.portfolio-cta {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* ========================================
   客户评价区域
======================================== */
.testimonials {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-primary);
  color: #fff;
}

.testimonials .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.testimonials .section-title {
  color: #fff;
}

.testimonials-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.testimonials-swiper {
  padding-bottom: 60px;
}

.testimonials-swiper .swiper-slide {
  height: auto;
}

.testimonial-content {
  text-align: center;
}

.quote-icon {
  color: rgba(255, 255, 255, 0.2);
  margin-bottom: var(--spacing-md);
}

.testimonial-text {
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  font-weight: 400;
  line-height: 1.7;
  font-style: italic;
  margin-bottom: var(--spacing-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.author-image {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

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

.author-name {
  display: block;
  font-weight: 600;
  font-size: 1rem;
}

.author-location {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Swiper 导航 */
.testimonials-swiper .swiper-pagination {
  position: relative;
  margin-top: var(--spacing-xl);
}

.testimonials-swiper .swiper-pagination-bullet {
  width: 10px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.3);
  opacity: 1;
  transition: all var(--transition-base);
}

.testimonials-swiper .swiper-pagination-bullet-active {
  background-color: #fff;
}

.testimonials-swiper .swiper-button-prev,
.testimonials-swiper .swiper-button-next {
  width: 44px;
  height: 44px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0;
  transition: all var(--transition-base);
}

.testimonials-swiper .swiper-button-prev:hover,
.testimonials-swiper .swiper-button-next:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.testimonials-swiper .swiper-button-prev::after,
.testimonials-swiper .swiper-button-next::after {
  font-size: 16px;
  font-weight: 700;
}

/* ========================================
   博客区域
======================================== */
.blog {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-card);
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.blog-card {
  background-color: var(--color-background);
  overflow: hidden;
}

.blog-image-wrapper {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.blog-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.blog-category {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background-color: var(--color-primary);
  color: #fff;
  padding: 0.375rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.blog-content {
  padding: var(--spacing-md);
}

.blog-date {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}

.blog-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-base);
}

.blog-card:hover .blog-title {
  color: var(--color-primary);
}

.blog-excerpt {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: gap var(--transition-base);
}

.blog-link:hover {
  gap: 0.75rem;
}

/* ========================================
   联系区域
======================================== */
.contact {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-background);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

.contact-description {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-card {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background);
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-card-title {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-card-text {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.5;
}

/* 联系表单 */
.contact-form-wrapper {
  background-color: var(--color-card);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.form-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-background);
  color: var(--color-foreground);
  transition: border-color var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b6b6b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: #e74c3c;
}

.form-textarea {
  resize: none;
}

.btn.success {
  background-color: #27ae60;
  border-color: #27ae60;
}

/* ========================================
   页脚
======================================== */
.footer {
  background-color: var(--color-foreground);
  color: #fff;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-logo .logo-image {
  filter: brightness(0) invert(1);
}

.footer-description {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin: var(--spacing-md) 0;
  max-width: 300px;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: all var(--transition-base);
}

.social-link:hover {
  background-color: var(--color-primary);
}

.footer-title {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-list a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

.footer-list a:hover {
  color: #fff;
}

.footer-contact li {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  text-align: center;
}

.copyright {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

.footer-legal a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-base);
}

.footer-legal a:hover {
  color: #fff;
}

/* ========================================
   动画
======================================== */
.animate-fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 滚动动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   媒体查询
======================================== */

/* 平板设备 (768px+) */
@media (min-width: 768px) {
  .hero-buttons {
    display: flex;
    flex-direction: row;
  }
  
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .experience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-stats {
    bottom: 2rem;
    right: -2rem;
  }
  
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* 桌面设备 (1024px+) */
@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
  
  .nav-desktop {
    display: flex;
  }
  
  .header-cta {
    display: inline-flex;
  }
  
  .header:not(.scrolled) .header-cta {
    background-color: transparent;
    border-color: #fff;
    color: #fff;
  }
  
  .header:not(.scrolled) .header-cta:hover {
    background-color: #fff;
    color: var(--color-foreground);
  }
  
  .featured-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .experience-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  
  .contact-form-wrapper {
    padding: var(--spacing-xl);
  }
}

/* 大屏桌面 (1280px+) */
@media (min-width: 1280px) {
  :root {
    --container-padding: 2rem;
  }
  
  .about-stats {
    right: -3rem;
    padding: var(--spacing-lg) var(--spacing-xl);
  }
  
  .stat-number {
    font-size: 3rem;
  }
}

/* 超大屏桌面 (1920px+) */
@media (min-width: 1920px) {
  :root {
    --container-max: 1600px;
    --container-padding: 3rem;
    --spacing-3xl: 8rem;
  }
  
  .section-title {
    font-size: clamp(2.5rem, 4vw, 4rem);
  }
  
  .hero-title {
    font-size: clamp(3rem, 6vw, 6rem);
  }
  
  .featured-grid,
  .portfolio-grid {
    gap: var(--spacing-xl);
  }
  
  .experience-grid {
    gap: var(--spacing-xl);
  }
}

/* 超宽屏 (2560px+) */
@media (min-width: 2560px) {
  :root {
    --container-max: 1800px;
    --container-padding: 4rem;
  }
  
  .section-title {
    font-size: clamp(3rem, 3.5vw, 4.5rem);
  }
  
  .hero-title {
    font-size: clamp(4rem, 5vw, 7rem);
  }
}

/* 4K 屏幕 (3840px+) */
@media (min-width: 3840px) {
  :root {
    --container-max: 2000px;
    --container-padding: 5rem;
    font-size: 18px;
  }
  
  .section-title {
    font-size: clamp(3.5rem, 3vw, 5rem);
  }
  
  .hero-title {
    font-size: clamp(5rem, 4vw, 8rem);
  }
  
  .section-description,
  .about-text,
  .contact-description {
    font-size: 1.25rem;
  }
}