/* ===================================================
   博妍美业装修 - 简洁专业主样式表
   域名：www.boyanyl.com
   定位：杭州美容院装修 | 简洁 · 专业 · 有质感
   配色：暖金 + 纯白 + 冷灰
   =================================================== */

/* ===== CSS 变量 ===== */
:root {
  --color-primary: #a07d50;
  --color-primary-dark: #8a6a3e;
  --color-primary-deeper: #6e5330;
  --color-primary-light: #e8dcc8;
  --color-primary-bg: #faf6ef;

  --color-dark: #1f2937;
  --color-dark-soft: #374151;

  --color-text: #374151;
  --color-text-light: #9ca3af;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-bg: #ffffff;
  --color-bg-light: #f9fafb;
  --color-bg-gray: #f3f4f6;

  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'PingFang SC', 'Noto Sans SC', var(--font-sans);

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);

  --container-max: 1200px;

  --transition: all 0.3s ease;
  --transition-fast: all 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

::selection {
  background: var(--color-primary-light);
  color: var(--color-dark);
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-align: center;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.5;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.8);
  color: #fff;
}

.btn-lg { padding: 16px 40px; font-size: 1rem; }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }

/* ===== 区块标题 ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}
.section-header .badge {
  display: inline-block;
  padding: 4px 16px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 12px;
  line-height: 1.4;
  letter-spacing: 0.5px;
}
.section-header p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  font-family: var(--font-display);
  letter-spacing: 1px;
}

.navbar-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.navbar-brand span {
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

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

.nav-menu a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
}

.nav-phone svg { width: 16px; height: 16px; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}
.menu-toggle:hover { background: var(--color-bg-light); }
.menu-toggle span {
  width: 22px; height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-dark);
  overflow: hidden;
}

.hero-banner .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, #1f2937 0%, #374151 50%, #1f2937 100%);
}

.hero-banner .hero-bg::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(160,125,80,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-banner .hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.hero-content {
  max-width: 680px;
  color: #fff;
}

.hero-tag {
  display: inline-block;
  background: rgba(160,125,80,0.15);
  border: 1px solid rgba(160,125,80,0.3);
  color: var(--color-primary-light);
  font-size: 0.82rem;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 4px;
  margin-bottom: 28px;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--color-primary-light);
  position: relative;
}

.hero-content h1 em::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-primary);
  opacity: 0.4;
  border-radius: 2px;
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.65);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stats .stat { text-align: center; }
.hero-stats .stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-light);
  line-height: 1.2;
}
.hero-stats .stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.3);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-align: center;
}
.hero-scroll-hint .scroll-arrow {
  display: block;
  margin-top: 4px;
  animation: scrollArrow 2s ease-in-out infinite;
}
@keyframes scrollArrow {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.section-alt {
  background: var(--color-bg-light);
}

/* ===== 案例卡片 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.cc-image {
  width: 100%;
  height: 220px;
  background: var(--color-bg-gray);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cc-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .cc-image img {
  transform: scale(1.05);
}

.cc-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 12px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  letter-spacing: 0.3px;
}

.cc-info {
  padding: 20px;
}

.cc-info h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
  line-height: 1.5;
}

.cc-meta {
  display: flex;
  gap: 16px;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
}

/* ===== 优势区块 ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.adv-item {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.adv-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.adv-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.4rem;
  transition: var(--transition-fast);
}

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

.adv-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.adv-item p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ===== 文章卡片 ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

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

.ac-image {
  width: 100%;
  height: 180px;
  background: var(--color-bg-gray);
  overflow: hidden;
}

.ac-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.article-card:hover .ac-image img {
  transform: scale(1.05);
}

.ac-content {
  padding: 20px;
}

.ac-cat {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.ac-content h3 {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}

.ac-date {
  color: var(--color-text-light);
  font-size: 0.82rem;
}

/* ===== 服务卡片 ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-primary);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.service-card:hover::before { opacity: 1; }

.service-card .icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
  transition: var(--transition-fast);
}

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

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: var(--color-dark);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(160,125,80,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
  position: relative;
}

.cta-section p {
  font-size: 1rem;
  opacity: 0.7;
  margin-bottom: 36px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
  position: relative;
}

.cta-section .btn {
  position: relative;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}
.cta-section .btn:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* ===== 页脚 ===== */
.footer {
  background: #111827;
  color: rgba(255, 255, 255, 0.65);
  padding: var(--spacing-2xl) 0 0;
}

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

.footer-brand h3 {
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.footer-brand h3 span {
  color: var(--color-primary);
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 18px;
  color: rgba(255,255,255,0.5);
}

.footer-brand .contact-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-brand .contact-info a {
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  transition: var(--transition-fast);
}
.footer-brand .contact-info a:hover {
  color: var(--color-primary-light);
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 18px;
  padding-bottom: 10px;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

.footer-col ul li { margin-bottom: 8px; }

.footer-col ul li a {
  color: rgba(255,255,255,0.5);
  font-size: 0.88rem;
  transition: var(--transition-fast);
}
.footer-col ul li a:hover {
  color: var(--color-primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 18px 0;
  margin-top: var(--spacing-xl);
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 16px 0;
  background: var(--color-bg-light);
  margin-top: 72px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}

.breadcrumb-list a { color: var(--color-text-secondary); }
.breadcrumb-list a:hover { color: var(--color-primary); }
.breadcrumb-list .separator { color: var(--color-border); }
.breadcrumb-list .current { color: var(--color-primary); font-weight: 600; }

/* ===== 文章详情 ===== */
.article-detail { padding: var(--spacing-xl) 0 var(--spacing-2xl); }

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

.article-header .category-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.article-header h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 18px;
  line-height: 1.4;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--color-text-light);
  font-size: 0.88rem;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text);
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 32px 0 14px;
}

.article-body p { margin-bottom: 18px; }

.article-body img {
  border-radius: var(--radius-md);
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.article-body ul, .article-body ol {
  padding-left: 24px;
  margin-bottom: 18px;
}
.article-body li { margin-bottom: 8px; list-style: disc; }

.article-body blockquote {
  border-left: 3px solid var(--color-primary);
  padding: 16px 20px;
  background: var(--color-primary-bg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 28px 0;
  color: var(--color-text);
  font-style: italic;
}

/* ===== 案例详情 ===== */
.case-detail { padding: var(--spacing-xl) 0 var(--spacing-2xl); }

.case-hero { margin-bottom: var(--spacing-xl); }
.case-hero h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 14px;
}

.case-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: var(--spacing-xl);
}

.case-info-item {
  background: var(--color-bg-light);
  padding: 20px 16px;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--color-border);
}

.case-info-item .label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.case-info-item .value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-dark);
}

.case-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: var(--spacing-xl);
}

.case-gallery img {
  border-radius: var(--radius-md);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: var(--spacing-xl);
}

.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.pagination a {
  background: #fff;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.pagination a:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.pagination .active {
  background: var(--color-primary);
  color: #fff;
  border: 1px solid var(--color-primary);
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  background: #fff;
  transition: var(--transition-fast);
}

.faq-item:hover { border-color: var(--color-primary-light); }

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-dark);
  background: #fff;
  transition: var(--transition-fast);
  font-size: 0.95rem;
}

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

.faq-question .arrow {
  transition: transform 0.3s ease;
  font-size: 0.75rem;
  color: var(--color-primary);
}

.faq-item.active .faq-question .arrow { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-size: 0.92rem;
}

.faq-item.active .faq-answer { display: block; }

/* ===== 联系页面 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form .form-group { margin-bottom: 18px; }

.contact-form label {
  display: block;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-family: var(--font-sans);
  transition: var(--transition-fast);
  background: #fff;
  color: var(--color-text);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(160,125,80,0.1);
}

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

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  z-index: 999;
}

.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 后台样式 ===== */
.admin-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-bg) 100%);
}

.login-card {
  background: #fff;
  padding: 40px 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  text-align: center;
  color: var(--color-dark);
  margin-bottom: 28px;
  font-family: var(--font-display);
  letter-spacing: 1px;
}

.admin-layout { display: flex; min-height: 100vh; }

.admin-sidebar {
  width: 240px;
  background: var(--color-dark);
  color: #fff;
  padding: 28px 0;
}

.admin-sidebar .brand {
  padding: 0 20px;
  margin-bottom: 36px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.admin-sidebar .brand span {
  color: var(--color-primary);
}

.admin-sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition-fast);
  font-size: 0.9rem;
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
  background: rgba(160,125,80,0.15);
  color: var(--color-primary-light);
}

.admin-main {
  flex: 1;
  background: var(--color-bg-light);
  padding: 20px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  background: #fff;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.admin-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 18px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.admin-table th {
  background: var(--color-bg-light);
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.85rem;
}

.admin-table td { font-size: 0.88rem; }

.admin-table .status {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.admin-table .status.published { background: #e8f5e9; color: #2e7d32; }
.admin-table .status.draft { background: #fff3e0; color: #e65100; }

.alert {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  font-size: 0.88rem;
}
.alert-success { background: #e8f5e9; color: #2e7d32; }
.alert-error { background: #ffebee; color: #c62828; }
.alert-warning { background: #fff3e0; color: #e65100; }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(160,125,80,0.1);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-banner .hero-inner {
    max-width: 100%;
  }

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

  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .case-info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-menu, .nav-phone { display: none; }
  .menu-toggle { display: flex; }

  .hero-content h1 { font-size: 1.8rem; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: flex-start; }
  .hero-stats .stat { text-align: left; }

  .section-header h2 { font-size: 1.6rem; }

  .service-grid,
  .case-grid,
  .article-grid { grid-template-columns: 1fr; }

  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .case-gallery { grid-template-columns: 1fr; }
  .case-info-grid { grid-template-columns: 1fr; }

  .cta-section h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-content h1 { font-size: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .btn-lg { width: 100%; text-align: center; }
  .advantage-grid { grid-template-columns: 1fr; }
}