/* ===================================
   丹玫科技官网 - 全局样式
   科技蓝 + 深灰 + 白色商务风
   =================================== */

:root {
  --primary: #2B5FE5;
  --primary-dark: #1A4FCC;
  --primary-light: #E8F0FF;
  --primary-gradient: linear-gradient(135deg, #2B5FE5 0%, #4A7AFC 100%);
  --secondary: #0F172A;
  --gray-900: #1e293b;
  --gray-700: #475569;
  --gray-500: #94a3b8;
  --gray-300: #e2e8f0;
  --gray-100: #f8fafc;
  --gray-50: #f1f5f9;
  --white: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-primary: 0 8px 30px rgba(43,95,229,0.25);
  --container: 1200px;
  --header-h: 64px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; transition: var(--transition); }
input, textarea, select { font-family: inherit; outline: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-gray { background: var(--gray-50); }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}
.section-title p {
  font-size: 16px;
  color: var(--gray-500);
}
.section-title .line {
  width: 48px;
  height: 4px;
  background: var(--primary-gradient);
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}
.header-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  white-space: nowrap;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: 700;
}
.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}
.footer-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  vertical-align: middle;
  display: inline-block;
}
.admin-login-box .logo-img,
.admin-sidebar-header .logo-img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  position: relative;
}
.nav a:hover { color: var(--primary); background: var(--primary-light); }
.nav a.active { color: var(--primary); font-weight: 600; }
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.header-cta {
  background: var(--primary-gradient);
  color: white !important;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  margin-left: 8px;
}
.header-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-primary); }
.mobile-menu-btn { display: none; background: none; font-size: 24px; color: var(--gray-700); }

/* ========== Hero Banner ========== */
.hero {
  margin-top: var(--header-h);
  min-height: 560px;
  background: var(--secondary);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(43,95,229,0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(74,122,252,0.2) 0%, transparent 50%),
    radial-gradient(circle at 60% 80%, rgba(99,102,241,0.15) 0%, transparent 50%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  padding: 80px 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(43,95,229,0.2);
  border: 1px solid rgba(43,95,229,0.4);
  color: #93c5fd;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  background: linear-gradient(to bottom, #fff, #e0e7ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero h1 span {
  background: linear-gradient(135deg, #60a5fa, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 18px;
  color: #cbd5e1;
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center; /* 按钮/表单文字一律居中 */
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(43,95,229,0.35); color: white; }
.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover { background: rgba(255,255,255,0.15); color: white; }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: white; }
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-sm { padding: 6px 16px; font-size: 13px; }

/* ========== Advantages ========== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--gray-300);
  transition: var(--transition);
}
.advantage-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.advantage-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: var(--primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 24px;
}
.advantage-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 10px;
}
.advantage-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ========== Quick Entry ========== */
.quick-entries {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.quick-entry {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--gray-300);
  transition: var(--transition);
}
.quick-entry:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.quick-entry-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  flex-shrink: 0;
}
.quick-entry-info h4 { font-size: 16px; font-weight: 600; color: var(--secondary); margin-bottom: 4px; }
.quick-entry-info p { font-size: 13px; color: var(--gray-500); }

/* ========== Industries ========== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 16px;
}
.industry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 12px;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
}
.industry-item:hover {
  background: var(--primary-light);
  transform: translateY(-4px);
}
.industry-icon {
  width: 56px;
  height: 56px;
  background: white;
  border: 2px solid var(--gray-300);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 22px;
  transition: var(--transition);
}
.industry-item:hover .industry-icon {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
}
.industry-item span { font-size: 14px; font-weight: 500; color: var(--gray-700); }

/* ========== Page Header ========== */
.page-header {
  margin-top: var(--header-h);
  padding: 80px 0 60px;
  background: var(--secondary);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(43,95,229,0.2) 0%, transparent 60%);
}
.page-header h1 {
  position: relative;
  font-size: 36px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}
.page-header p {
  position: relative;
  font-size: 16px;
  color: #94a3b8;
}
.breadcrumb {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 16px;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--gray-300); }

/* ========== About Page ========== */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
}
.about-text p {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: 16px;
  white-space: pre-wrap; /* 保留段落内的空格缩进与换行排版 */
}
.about-visual {
  height: 400px;
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.1), transparent 50%);
}
.about-visual-content {
  text-align: center;
  color: white;
  position: relative;
}
.about-visual-content .number { font-size: 56px; font-weight: 800; }
.about-visual-content .label { font-size: 16px; opacity: 0.9; }
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.about-stat {
  text-align: center;
  padding: 24px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--gray-300);
}
.about-stat .num { font-size: 36px; font-weight: 800; color: var(--primary); }
.about-stat .desc { font-size: 14px; color: var(--gray-500); margin-top: 4px; }

.service-guarantee {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.guarantee-item {
  padding: 32px 24px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--gray-300);
  background: white;
  transition: var(--transition);
}
.guarantee-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-4px); }
.guarantee-item .icon {
  width: 52px; height: 52px; margin: 0 auto 16px;
  background: var(--primary-light); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 22px;
}
.guarantee-item h4 { font-size: 16px; font-weight: 600; color: var(--secondary); margin-bottom: 8px; }
.guarantee-item p { font-size: 13px; color: var(--gray-500); line-height: 1.7; }

.vision-box {
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.vision-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.1), transparent 60%);
}
.vision-box h2 { font-size: 28px; font-weight: 700; margin-bottom: 16px; position: relative; }
.vision-box p { font-size: 18px; opacity: 0.95; max-width: 600px; margin: 0 auto; position: relative; }

/* ========== Services Page ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--gray-300);
  padding: 32px;
  transition: var(--transition);
}
.service-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.service-card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 22px;
  margin-bottom: 20px;
}
.service-card h3 { font-size: 18px; font-weight: 600; color: var(--secondary); margin-bottom: 10px; }
.service-card > p { font-size: 14px; color: var(--gray-500); line-height: 1.7; margin-bottom: 16px; }
.service-features { list-style: none; }
.service-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-700);
  padding: 4px 0;
}
.service-features li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
}

/* ========== Project Cases ========== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--gray-300);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.case-card-header {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 40px;
  position: relative;
  overflow: hidden;
}
.case-card-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2), transparent 50%);
}
.case-card-header i { position: relative; z-index: 1; }
.case-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
  align-self: flex-start;
}
.case-card-body h3 { font-size: 17px; font-weight: 600; color: var(--secondary); margin-bottom: 8px; }
.case-card-body .desc { font-size: 13px; color: var(--gray-500); line-height: 1.6; margin-bottom: 16px; flex: 1; }
.case-card-footer {
  display: flex;
  gap: 8px;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--gray-300);
}
.case-card-footer .btn { flex: 1; text-align: center; }

.case-filter {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 20px;
  background: white;
  border: 1px solid var(--gray-300);
  font-size: 14px;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* ========== Case Detail ========== */
.case-detail-header {
  margin-top: var(--header-h);
  padding: 60px 0 40px;
  color: white;
  position: relative;
}
.case-detail-info { position: relative; z-index: 1; }
.case-detail-info .tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 16px;
}
.case-detail-info h1 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.case-detail-info .sub { font-size: 15px; opacity: 0.85; }

.detail-section { margin-bottom: 48px; }
.detail-section h2 { font-size: 22px; font-weight: 600; color: var(--secondary); margin-bottom: 20px; padding-left: 12px; border-left: 4px solid var(--primary); }
.pain-box {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: var(--radius);
  padding: 24px;
}
.pain-box p { font-size: 15px; color: var(--gray-700); line-height: 1.8; }

.highlight-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
}
.highlight-item .check {
  width: 24px; height: 24px; flex-shrink: 0;
  background: var(--success); color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.highlight-item span { font-size: 14px; color: var(--gray-700); font-weight: 500; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature-item {
  padding: 24px;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  transition: var(--transition);
}
.feature-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.feature-item h4 { font-size: 16px; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
.feature-item p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

.demo-box {
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: white;
  text-align: center;
}
.demo-box h3 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.demo-info {
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(255,255,255,0.1);
  padding: 24px 40px;
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.demo-info-row { display: flex; align-items: center; gap: 12px; font-size: 15px; }
.demo-info-row .label { opacity: 0.7; min-width: 60px; text-align: right; }
.demo-info-row .val { font-weight: 600; font-family: monospace; }
.demo-box .btn { background: white; color: var(--primary); }
.demo-box .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ========== Quote System ========== */
.quote-form {
  max-width: 720px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}
.form-group label .req { color: var(--danger); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-900);
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43,95,229,0.1);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
}
.checkbox-item:hover { border-color: var(--primary); }
.checkbox-item input { width: auto; }
.checkbox-item.checked { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

.radio-group { display: flex; flex-wrap: wrap; gap: 12px; }
.radio-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
}
.radio-item:hover { border-color: var(--primary); }
.radio-item.active { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.radio-item input { width: auto; }

.quote-result {
  display: none;
  margin-top: 32px;
  padding: 32px;
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  color: white;
  text-align: center;
}
.quote-result.show { display: block; animation: fadeUp 0.5s ease; }
.quote-result h3 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.quote-range {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 8px;
}
.quote-duration { font-size: 16px; opacity: 0.9; margin-bottom: 24px; }
.quote-summary {
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
  margin-bottom: 24px;
}
.quote-summary h4 { font-size: 15px; margin-bottom: 12px; opacity: 0.9; }
.quote-summary ul { list-style: none; }
.quote-summary li { font-size: 14px; padding: 4px 0; opacity: 0.95; display: flex; gap: 8px; }
.quote-summary li::before { content: '✓'; }

.quote-breakdown {
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
  margin-bottom: 24px;
}
.quote-breakdown h4 { font-size: 15px; margin-bottom: 12px; opacity: 0.9; }
.quote-breakdown-inner ul { margin-left: 16px; }
.quote-breakdown-inner li { font-size: 13px; padding: 2px 0; }

/* Form row 3 column */
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 768px) { .form-row-3 { grid-template-columns: 1fr; } }

/* ========== News ========== */
.news-list { max-width: 800px; margin: 0 auto; }
.news-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  margin-bottom: 16px;
  transition: var(--transition);
  cursor: pointer;
}
.news-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateX(4px); }
.news-date {
  flex-shrink: 0;
  text-align: center;
  width: 80px;
}
.news-date .day { font-size: 28px; font-weight: 700; color: var(--primary); }
.news-date .month { font-size: 13px; color: var(--gray-500); }
.news-item.active { border-left: 4px solid var(--primary); }
.news-content { flex: 1; }
.news-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  margin-bottom: 8px;
}
.news-content h3 { font-size: 17px; font-weight: 600; color: var(--secondary); margin-bottom: 8px; }
.news-content p { font-size: 14px; color: var(--gray-500); line-height: 1.6; }

.news-detail { max-width: 800px; margin: 0 auto; }
.news-detail h1 { font-size: 28px; font-weight: 700; color: var(--secondary); margin-bottom: 12px; }
.news-meta { display: flex; gap: 16px; font-size: 14px; color: var(--gray-500); margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--gray-300); }
.news-detail-content { font-size: 15px; line-height: 1.9; color: var(--gray-700); white-space: pre-wrap; }

/* ========== Contact ========== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-card {
  background: var(--secondary);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: white;
}
.contact-info-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 24px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}
.contact-info-item .icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-info-item .info h4 { font-size: 14px; opacity: 0.7; margin-bottom: 4px; }
.contact-info-item .info p { font-size: 16px; font-weight: 500; }
.qr-placeholder {
  width: 160px; height: 160px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin: 24px auto 0;
  font-size: 13px;
  opacity: 0.7;
  text-align: center;
  border: 2px dashed rgba(255,255,255,0.2);
}
.contact-form-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.contact-form-card h3 { font-size: 20px; font-weight: 600; color: var(--secondary); margin-bottom: 24px; }

/* ========== Footer ========== */
.footer {
  background: var(--secondary);
  color: #94a3b8;
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand h3 { font-size: 20px; font-weight: 700; color: white; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: white; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; padding: 4px 0; color: #94a3b8; }
.footer-col a:hover { color: white; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 13px;
}

/* ========== AI Chat Widget ========== */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
}
.chat-toggle {
  width: 56px; height: 56px;
  background: var(--primary-gradient);
  border-radius: 50%;
  box-shadow: var(--shadow-primary);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 24px;
  cursor: pointer;
  transition: var(--transition);
}
.chat-toggle:hover { transform: scale(1.05); }
.chat-toggle .badge {
  position: absolute;
  top: -2px; right: -2px;
  width: 16px; height: 16px;
  background: var(--danger);
  border-radius: 50%;
  font-size: 10px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid white;
}
.chat-panel {
  position: absolute;
  bottom: 72px; right: 0;
  width: 380px; height: 560px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.chat-panel.show { display: flex; animation: chatOpen 0.3s ease; }
@keyframes chatOpen { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.chat-header {
  background: var(--primary-gradient);
  color: white;
  padding: 16px 20px;
  display: flex; align-items: center;
  justify-content: space-between;
}
.chat-header-info { display: flex; align-items: center; gap: 12px; }
.chat-header-info .avatar {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.chat-header-info h4 { font-size: 15px; font-weight: 600; }
.chat-header-info .status { font-size: 12px; opacity: 0.8; display: flex; align-items: center; gap: 4px; }
.chat-header-info .status::before { content: ''; width: 6px; height: 6px; background: #4ade80; border-radius: 50%; }
.chat-close { background: none; color: white; font-size: 20px; padding: 4px 8px; }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  background: var(--gray-50);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
}
.chat-msg.bot {
  background: white;
  border: 1px solid var(--gray-300);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.chat-msg.user {
  background: var(--primary);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-quick {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 12px 16px;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-300);
}
.chat-quick-btn {
  padding: 6px 12px;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: 16px;
  font-size: 12px;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}
.chat-quick-btn:hover { border-color: var(--primary); color: var(--primary); }
.chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--gray-300);
  display: flex;
  gap: 8px;
  background: white;
}
.chat-input-area input {
  flex: 1;
  padding: 8px 14px;
  border: 1px solid var(--gray-300);
  border-radius: 20px;
  font-size: 14px;
}
.chat-input-area input:focus { border-color: var(--primary); }
/* AI客服打字机效果（移植自曹卤记） */
.chat-typing { display: flex; gap: 4px; padding: 4px 2px; align-items: center; }
.chat-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--gray-400); animation: chatTyping 1.2s infinite; }
.chat-typing span:nth-child(2) { animation-delay: .2s; }
.chat-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes chatTyping { 0%, 60%, 100% { opacity: .3; } 30% { opacity: 1; } }
.chat-msg { white-space: pre-wrap; word-break: break-word; }
.chat-msg.bot { box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.chat-send-btn {
  width: 36px; height: 36px;
  background: var(--primary-gradient);
  color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

/* ========== Modal ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}
.modal-overlay.show { display: flex; animation: fadeIn 0.2s ease; }
.modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-300);
}
.modal-header h3 { font-size: 18px; font-weight: 600; }
.modal-close { background: none; font-size: 22px; color: var(--gray-500); padding: 4px 8px; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--gray-300); display: flex; justify-content: flex-end; gap: 12px; }

/* ========== Toast ========== */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--gray-900);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ========== Animations ========== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { animation: fadeUp 0.6s ease; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  :root { --header-h: 56px; }
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .section-title h2 { font-size: 24px; }
  .hero { min-height: 420px; }
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 80%; justify-content: center; }

  .nav { display: none; }
  .mobile-menu-btn { display: block; }
  .nav.mobile-show {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: white;
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow);
    gap: 0;
  }
  .nav.mobile-show a { padding: 12px 16px; border-radius: 0; }
  .header-cta { display: none; }

  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-entries { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .about-hero { grid-template-columns: 1fr; gap: 30px; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .service-guarantee { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .highlight-list, .feature-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 24px; }
  .quote-form, .contact-info-card, .contact-form-card { padding: 24px; }

  .chat-panel { width: calc(100vw - 32px); height: calc(100vh - 120px); right: -8px; bottom: 64px; }
  .chat-widget { bottom: 16px; right: 16px; }

  .news-item { flex-direction: column; gap: 12px; }
  .news-date { display: flex; gap: 8px; align-items: baseline; width: auto; }
  .news-date .day { font-size: 20px; }
}

@media (max-width: 480px) {
  .advantages-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .service-guarantee { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ========== Admin ========== */
.admin-layout { display: flex; min-height: 100vh; background: var(--gray-50); }
.admin-sidebar {
  width: 240px;
  background: var(--secondary);
  color: white;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 100;
}
.admin-sidebar-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; gap: 10px;
}
.admin-sidebar-header .logo-icon {
  width: 32px; height: 32px; font-size: 16px;
}
.admin-sidebar-header span { font-size: 16px; font-weight: 700; }
.admin-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.admin-nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 24px;
  font-size: 14px;
  color: #94a3b8;
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.admin-nav-item:hover { background: rgba(255,255,255,0.05); color: white; }
.admin-nav-item.active { background: rgba(43,95,229,0.15); color: white; border-left-color: var(--primary); }
.admin-nav-item .icon { font-size: 18px; width: 20px; text-align: center; }
.admin-main {
  flex: 1;
  margin-left: 240px;
  padding: 24px;
  min-height: 100vh;
}
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.admin-header h2 { font-size: 22px; font-weight: 600; color: var(--secondary); }
.admin-card {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--gray-300); font-size: 14px; }
.admin-table th { font-weight: 600; color: var(--gray-700); background: var(--gray-50); white-space: nowrap; }
.admin-table tr:hover td { background: var(--gray-50); }
.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.status-badge.pending { background: #fef3c7; color: #92400e; }
.status-badge.success { background: #d1fae5; color: #065f46; }
.status-badge.danger { background: #fee2e2; color: #991b1b; }
.status-badge.info { background: #dbeafe; color: #1e40af; }
.admin-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.admin-login {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0F172A 0%, #1e293b 50%, #1e3a5f 100%);
  position: relative;
  overflow: hidden;
}
.admin-login::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,95,229,0.15) 0%, transparent 70%);
  top: -200px; right: -100px;
}
.admin-login::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
  bottom: -100px; left: -100px;
}
.admin-login-box {
  position: relative;
  z-index: 1;
  width: 380px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  padding: 48px 40px 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  text-align: center;
}
.admin-login-box .logo-icon {
  width: 56px; height: 56px; font-size: 28px;
  margin: 0 auto 20px;
  box-shadow: 0 8px 24px rgba(43,95,229,0.3);
}
.admin-login-box h2 { font-size: 22px; font-weight: 700; color: var(--secondary); margin-bottom: 8px; }
.admin-login-box .subtitle { font-size: 14px; color: var(--gray-500); margin-bottom: 32px; }
.admin-login-box .form-group { text-align: center; margin-bottom: 20px; }
.admin-login-box .form-group label { font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 8px; display: block; }
.admin-login-box .form-group input {
  width: 100%; padding: 12px 16px; border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm); font-size: 15px;
  transition: var(--transition);
}
.admin-login-box .form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(43,95,229,0.1);
}
.admin-login-box .btn-primary { width: 100%; padding: 13px; font-size: 15px; font-weight: 600; }
.admin-login-box .login-hint {
  margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--gray-300);
  font-size: 13px; color: var(--gray-500);
}
.admin-login-box .login-hint code {
  background: var(--gray-100); padding: 2px 8px; border-radius: 4px;
  font-size: 13px; color: var(--primary); font-weight: 600;
}
.admin-login-box .back-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 12px; font-size: 13px; color: var(--gray-500);
  transition: var(--transition);
}
.admin-login-box .back-link:hover { color: var(--primary); }
.admin-content { display: none; }
.admin-content.active { display: block; }

.admin-stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 24px; }
.admin-stat-card {
  background: white; border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow-sm);
}
.admin-stat-card .label { font-size: 13px; color: var(--gray-500); margin-bottom: 8px; }
.admin-stat-card .value { font-size: 28px; font-weight: 700; color: var(--secondary); }
.admin-stat-card .icon { float: right; font-size: 24px; color: var(--primary); opacity: 0.3; }

@media (max-width: 768px) {
  .admin-sidebar { transform: translateX(-100%); transition: var(--transition); }
  .admin-sidebar.mobile-show { transform: translateX(0); }
  .admin-main { margin-left: 0; padding: 16px; }
  .admin-stat-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-table { font-size: 12px; }
  .admin-table th, .admin-table td { padding: 8px; }
}