/* ========================================
   企业官网 - 暖阳 · 高级商务风格
   全局样式表
   （暖白底 + 琥珀金点缀 + 深咖深色块）
   ======================================== */

/* === CSS 变量 === */
:root {
  /* 主色调（暖色系） */
  --color-primary: #2b2320;        /* 深咖 - 主文字/标题 */
  --color-accent: #c8853a;         /* 琥珀金 - 强调色 */
  --color-accent-hover: #a9681f;   /* 深金 - 悬停 */
  --color-accent-light: #f6ecd9;   /* 浅金 - 强调浅色背景 */

  /* 中性色 */
  --color-bg: #fbf9f6;             /* 暖白 - 页面背景 */
  --color-bg-alt: #f4efe8;         /* 米色 - 交替区块背景 */
  --color-bg-dark: #2b2320;        /* 深咖 - 页脚/Hero 深色块 */
  --color-text: #2c2826;           /* 深暖灰 - 正文 */
  --color-text-light: #6f655c;     /* 暖灰 - 次要文字 */
  --color-text-muted: #a89c8e;     /* 浅暖灰 - 弱化文字 */
  --color-border: #e6ddd1;         /* 暖边框 */
  --color-border-light: #f0e9df;   /* 浅暖边框 */

  /* 功能色 */
  --color-success: #5b8c5a;
  --color-warning: #d19a3d;
  --color-error: #c0503a;

  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", "STSong", serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* 圆角（更大、更柔和） */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* 阴影（柔和暖调） */
  --shadow-sm: 0 1px 2px rgba(43, 35, 32, 0.04);
  --shadow-md: 0 6px 16px -4px rgba(43, 35, 32, 0.1), 0 2px 6px -2px rgba(43, 35, 32, 0.05);
  --shadow-lg: 0 16px 32px -8px rgba(43, 35, 32, 0.16), 0 4px 10px -3px rgba(43, 35, 32, 0.08);
  --shadow-xl: 0 24px 48px -12px rgba(43, 35, 32, 0.2), 0 8px 16px -6px rgba(43, 35, 32, 0.1);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* 容器宽度 */
  --container-max: 1200px;
  --container-narrow: 900px;

  /* 导航高度 */
  --nav-height: 76px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

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

ul, ol {
  list-style: none;
}

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

.container-narrow {
  max-width: var(--container-narrow);
}

/* === 导航栏 === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(251, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(251, 249, 246, 0.98);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.navbar-brand:hover {
  color: var(--color-accent);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.navbar-links a {
  font-size: 0.938rem;
  font-weight: 500;
  color: var(--color-text-light);
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--color-primary);
}

.navbar-links a.active::after,
.navbar-links a:hover::after {
  width: 100%;
}

/* 汉堡菜单 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1001;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === 主内容区 === */
.main-content {
  flex: 1;
  margin-top: var(--nav-height);
}

/* === 页面标题区 === */
.page-hero {
  position: relative;
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  background: linear-gradient(160deg, #f6ecd9 0%, var(--color-bg-alt) 60%, var(--color-bg) 100%);
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -40%;
  width: 180%;
  height: 220%;
  background: radial-gradient(ellipse at 30% 40%, rgba(200, 133, 58, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.page-hero p {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* === 首页 Hero === */
.home-hero {
  position: relative;
  padding: var(--spacing-4xl) 0;
  background: linear-gradient(155deg, #2b2320 0%, #3d322b 55%, #4a3d33 100%);
  color: #fdfaf4;
  text-align: center;
  overflow: hidden;
  min-height: 86vh;
  display: flex;
  align-items: center;
}

.home-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 22% 50%, rgba(200, 133, 58, 0.28) 0%, transparent 50%),
    radial-gradient(ellipse at 82% 22%, rgba(200, 133, 58, 0.16) 0%, transparent 42%),
    radial-gradient(ellipse at 50% 85%, rgba(209, 154, 61, 0.1) 0%, transparent 42%);
  pointer-events: none;
}

.home-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--color-bg), transparent);
}

.home-hero .container {
  position: relative;
  z-index: 1;
}

.home-hero h1 {
  font-family: var(--font-serif);
  font-size: 3.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  animation: fadeInUp 0.8s ease;
}

.home-hero p {
  font-size: 1.25rem;
  opacity: 0.88;
  max-width: 660px;
  margin: 0 auto var(--spacing-2xl);
  line-height: 1.85;
  animation: fadeInUp 0.8s ease 0.15s both;
}

.home-hero .btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.8rem 1.85rem;
  font-size: 0.938rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -6px rgba(169, 104, 31, 0.5);
}

.btn-outline {
  background: transparent;
  color: #fdfaf4;
  border-color: rgba(253, 250, 244, 0.45);
}

.btn-outline:hover {
  background: rgba(253, 250, 244, 0.12);
  border-color: rgba(253, 250, 244, 0.75);
  color: #ffffff;
}

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

.btn-outline-dark:hover {
  background: var(--color-primary);
  color: #fdfaf4;
  border-color: var(--color-primary);
}

.btn-sm {
  padding: 0.55rem 1.3rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1.05rem 2.4rem;
  font-size: 1rem;
}

/* === 通用区块 === */
.section {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.section-header p {
  font-size: 1.063rem;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* === 特性卡片 === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: 0.938rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

/* === 关于我们 === */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-alt);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.about-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-light), #efe5d2);
  color: var(--color-accent);
  font-size: 3rem;
}

.about-text h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.01em;
}

.about-text p {
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: var(--spacing-md);
  font-size: 0.969rem;
}

/* === 时间线 === */
.timeline {
  position: relative;
  padding-left: var(--spacing-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--spacing-2xl) + 3px);
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-stage {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 0.938rem;
}

/* === 产品/服务卡片 === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.product-image {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-text-muted);
}

.product-body {
  padding: var(--spacing-xl);
}

.product-body h3 {
  font-size: 1.188rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.product-body p {
  font-size: 0.938rem;
  color: var(--color-text-light);
  line-height: 1.75;
  margin-bottom: var(--spacing-lg);
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.product-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.28rem 0.8rem;
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
  border-radius: var(--radius-full);
}

/* === 主营业务网格 (首页) === */
.main-business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.business-item {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.business-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.business-item-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--spacing-lg);
  font-size: 1.5rem;
}

.business-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.business-item span {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-3xl);
}

.contact-info h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.01em;
}

.contact-info > p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.8;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  font-size: 1.125rem;
  flex-shrink: 0;
}

.contact-item-text h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 2px;
}

.contact-item-text span {
  font-size: 1rem;
  color: var(--color-primary);
  font-weight: 500;
}

.contact-info-solo {
  max-width: 680px;
  margin: 0 auto;
}

.contact-info-solo h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.01em;
  text-align: center;
}

.contact-info-solo > p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.8;
  text-align: center;
}

.contact-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

/* === 联系表单 === */
.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.contact-form h3 {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 0.938rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 133, 58, 0.15);
  background: var(--color-bg);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  width: 100%;
}

/* === 页脚 === */
.footer {
  background: var(--color-bg-dark);
  color: rgba(253, 250, 244, 0.72);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fdfaf4;
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.75;
  opacity: 0.82;
}

.footer-links h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fdfaf4;
  margin-bottom: var(--spacing-md);
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: rgba(253, 250, 244, 0.62);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(253, 250, 244, 0.12);
  padding-top: var(--spacing-xl);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.813rem;
}

.footer-bottom a {
  color: rgba(253, 250, 244, 0.62);
}

.footer-bottom a:hover {
  color: #fdfaf4;
}

/* === 统计数据（保留兼容，默认不再使用） === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item h3 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.stat-item p {
  font-size: 0.938rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

/* === CTA 区块 === */
.cta-section {
  background: linear-gradient(140deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #ffffff;
  text-align: center;
  padding: var(--spacing-4xl) 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.14) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.cta-section p {
  font-size: 1.063rem;
  opacity: 0.94;
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  position: relative;
}

.cta-section .btn {
  position: relative;
}

.cta-section .btn-outline {
  border-color: rgba(255, 255, 255, 0.55);
}

.cta-section .btn-outline:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.85);
}

/* === 动画 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* === 提示消息 === */
.toast {
  position: fixed;
  top: calc(var(--nav-height) + var(--spacing-md));
  right: var(--spacing-xl);
  background: var(--color-primary);
  color: #fdfaf4;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
  transform: translateX(calc(100% + 2rem));
  transition: transform var(--transition-base);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  background: var(--color-success);
}

.toast.error {
  background: var(--color-error);
}

/* ========================================
   管理后台样式
   ======================================== */
.admin-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.admin-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.admin-header h1 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.admin-header p {
  color: var(--color-text-light);
  font-size: 0.938rem;
}

.admin-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.admin-card h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.csv-import textarea {
  width: 100%;
  min-height: 80px;
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  resize: vertical;
  outline: none;
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.csv-import textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 133, 58, 0.15);
}

.csv-help {
  font-size: 0.813rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
}

.csv-help code {
  background: var(--color-border-light);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.813rem;
}

.csv-import .btn {
  width: 100%;
}

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

.config-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--spacing-md);
  align-items: start;
}

.config-row label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  padding-top: 0.75rem;
}

.config-row input,
.config-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.938rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.config-row input:focus,
.config-row textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 133, 58, 0.15);
  background: var(--color-bg);
}

.config-row textarea {
  resize: vertical;
  min-height: 60px;
}

.admin-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ========================================
   响应式布局
   ======================================== */

/* 平板 (≤1024px) */
@media (max-width: 1024px) {
  .features-grid,
  .products-grid,
  .main-business-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .home-hero h1 {
    font-size: 2.6rem;
  }

  .page-hero h1 {
    font-size: 2.25rem;
  }
}

/* 手机 (≤768px) */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  /* 导航 */
  .navbar-toggle {
    display: flex;
  }

  .navbar-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    padding: calc(var(--nav-height) + var(--spacing-2xl)) var(--spacing-xl) var(--spacing-xl);
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 1000;
  }

  .navbar-links.open {
    right: 0;
  }

  .navbar-links a {
    font-size: 1.063rem;
    padding: var(--spacing-sm) 0;
  }

  /* Hero */
  .home-hero {
    min-height: 72vh;
    padding: var(--spacing-3xl) 0;
  }

  .home-hero h1 {
    font-size: 2.1rem;
  }

  .home-hero p {
    font-size: 1.063rem;
  }

  .page-hero {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  }

  .page-hero h1 {
    font-size: 1.8rem;
  }

  /* 网格 */
  .features-grid,
  .products-grid,
  .main-business-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .stat-item h3 {
    font-size: 1.75rem;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  /* 关于 */
  .about-text h2 {
    font-size: 1.5rem;
  }

  /* 联系 */
  .contact-form {
    padding: var(--spacing-xl);
  }

  .contact-info h2,
  .contact-info-solo h2 {
    font-size: 1.5rem;
  }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

  /* 管理后台 */
  .config-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }

  .config-row label {
    padding-top: 0;
  }

  .admin-actions {
    flex-direction: column;
  }

  .admin-actions .btn {
    width: 100%;
  }
}

/* 小手机 (≤480px) */
@media (max-width: 480px) {
  .home-hero h1 {
    font-size: 1.7rem;
  }

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

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

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

/* === SEO 增强（同步自 company-site）=== */
.footer-links span.footer-address { display: block; font-size: 0.875rem; padding: var(--spacing-xs) 0; line-height: 1.6; }
.footer-copyright { font-size: 0.813rem; }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-lg); }
.privacy-content h2 { font-size: 1.15rem; font-weight: 700; margin: var(--spacing-xl) 0 var(--spacing-sm); }
.privacy-content h2:first-of-type { margin-top: 0; }
.privacy-content p { font-size: 0.938rem; line-height: 1.8; margin-bottom: var(--spacing-md); }
.privacy-content a { color: var(--color-accent); }