/* =========================================
   速度网络服务中心 - 全局样式
   配色:深空蓝 + 科技青 + 中性灰
   ========================================= */

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

:root {
  --color-bg: #0a0e1a;
  --color-bg-2: #0f1424;
  --color-bg-3: #161c30;
  --color-card: #1a2138;
  --color-border: #2a3247;
  --color-text: #e6e9f2;
  --color-text-2: #a0a8be;
  --color-text-3: #6b7390;
  --color-primary: #00d4ff;
  --color-primary-2: #0099cc;
  --color-accent: #7c4dff;
  --color-success: #00e676;
  --color-warning: #ffb300;
  --color-danger: #ff5252;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c4dff 100%);
  --gradient-card: linear-gradient(135deg, rgba(0,212,255,0.05) 0%, rgba(124,77,255,0.05) 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 32px rgba(0,212,255,0.2);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-w: 1280px;
  --header-h: 72px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(circle at 20% 0%, rgba(0,212,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(124,77,255,0.08) 0%, transparent 50%);
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-2); }

ul, ol { list-style: none; }

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

/* ========== 导航栏 ========== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}
.header.scrolled { background: rgba(10, 14, 26, 0.95); box-shadow: var(--shadow-sm); }

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}
.logo:hover { color: var(--color-text); }
.logo-icon {
  width: 36px; height: 36px;
  background: var(--gradient-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  font-weight: 800;
  box-shadow: var(--shadow-glow);
}
.logo-text { font-size: 18px; }
.logo-text small { display: block; font-size: 11px; color: var(--color-text-3); font-weight: 400; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background: rgba(0,212,255,0.08);
}
.nav-link .arrow { font-size: 10px; transition: var(--transition); }
.nav-item:hover .arrow { transform: rotate(180deg); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 10px 14px;
  color: var(--color-text);
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-dropdown a:hover {
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  padding-left: 18px;
}

.nav-cta {
  margin-left: 12px;
  padding: 10px 20px !important;
  background: var(--gradient-primary);
  color: #fff !important;
  font-weight: 600;
  border-radius: var(--radius-sm);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }

/* 移动端汉堡菜单 */
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.menu-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ========== 主区 ========== */
main { margin-top: var(--header-h); }

.page-hero {
  position: relative;
  padding: 80px 0 60px;
  text-align: center;
  background: var(--gradient-card);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.page-hero.has-image {
  background: none;
  padding: 0;
  border-bottom: none;
}
.page-hero.has-image .container {
  position: relative;
  z-index: 2;
  padding: 100px 24px 80px;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.page-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,26,0.4) 0%, rgba(10,14,26,0.85) 70%, var(--color-bg) 100%);
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero p {
  font-size: 18px;
  color: var(--color-text-2);
  max-width: 700px;
  margin: 0 auto;
}
.page-breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-3);
}
.page-breadcrumb a { color: var(--color-text-2); }
.page-breadcrumb a:hover { color: var(--color-primary); }

section { padding: 80px 0; }

/* ========== Hero (首页) ========== */
.hero {
  position: relative;
  padding: 100px 0 80px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, rgba(124,77,255,0.1) 30%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: hero-glow 8s ease-in-out infinite;
}
@keyframes hero-glow {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.6; }
  50% { transform: translateX(-50%) scale(1.2); opacity: 1; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: 100px;
  font-size: 13px;
  color: var(--color-primary);
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-primary);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }

.hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, var(--color-primary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero h1 span { display: block; }

.hero p {
  font-size: 20px;
  color: var(--color-text-2);
  max-width: 720px;
  margin: 0 auto 40px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}
.hero-tag {
  padding: 8px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 14px;
  color: var(--color-text);
}

.hero-cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::before { left: 100%; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,212,255,0.4); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 100%;
  background: var(--color-primary);
  transition: width 0.3s ease;
  z-index: -1;
}
.btn-secondary:hover { border-color: var(--color-primary); color: #fff; transform: translateY(-2px); }
.btn-secondary:hover::before { width: 100%; }

/* ========== 区块标题 ========== */
.section-header { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
}
.section-tag::before,
.section-tag::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}
.section-tag::before { right: 100%; margin-right: 8px; }
.section-tag::after { left: 100%; margin-left: 8px; }
.section-header h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, #b8c5d6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-header p { font-size: 17px; color: var(--color-text-2); }

/* ========== 服务亮点 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 32px 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(0,212,255,0.3); box-shadow: var(--shadow-md); }
.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 56px; height: 56px;
  background: rgba(0,212,255,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  color: var(--color-primary);
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; color: var(--color-text); }
.feature-card p { font-size: 14px; color: var(--color-text-2); line-height: 1.6; }

/* ========== 套餐卡片 ========== */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.plan-card {
  padding: 36px 28px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.plan-card.featured {
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(124,77,255,0.08) 100%);
  border-color: rgba(0,212,255,0.4);
  transform: scale(1.02);
}
.plan-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.plan-card.featured:hover { transform: scale(1.02) translateY(-6px); }

.plan-badge {
  position: absolute;
  top: -12px; right: 20px;
  padding: 4px 12px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 100px;
}
.plan-name { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.plan-desc { font-size: 14px; color: var(--color-text-2); margin-bottom: 24px; min-height: 42px; }
.plan-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}
.plan-price .currency { font-size: 20px; color: var(--color-primary); }
.plan-price .amount { font-size: 40px; font-weight: 800; color: var(--color-primary); }
.plan-price .period { font-size: 14px; color: var(--color-text-3); }
.plan-price-note { font-size: 12px; color: var(--color-text-3); margin-top: 4px; }

.plan-features { flex: 1; margin-bottom: 28px; }
.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-text);
}
.plan-features .check {
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.plan-features .cross { color: var(--color-text-3); flex-shrink: 0; margin-top: 2px; }
.plan-features li.disabled { color: var(--color-text-3); }

.plan-card .btn { width: 100%; justify-content: center; }

/* 报价请咨询 样式 */
.plan-price-quote {
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: 18px 0;
}
.quote-label {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1px;
}
.quote-sub {
  font-size: 12px;
  color: var(--color-text-3);
  font-weight: 400;
}

/* 服务卡片(用于服务概览区) */
.service-card {
  text-decoration: none;
  color: inherit;
  position: relative;
  display: block;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(0,212,255,0.05) 0%, rgba(124,77,255,0.05) 100%);
  transition: left 0.5s ease;
  z-index: 0;
}
.service-card:hover::before { left: 0; }
.service-card > * { position: relative; z-index: 1; }
.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.15);
}
.service-num {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 48px;
  font-weight: 800;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  background: linear-gradient(135deg, rgba(0,212,255,0.15) 0%, rgba(124,77,255,0.15) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  z-index: 0;
  transition: var(--transition);
}
.service-card:hover .service-num {
  transform: scale(1.1) rotate(-3deg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.card-link {
  display: inline-block;
  margin-top: 16px;
  padding: 8px 16px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}
.service-card:hover .card-link {
  background: var(--color-primary);
  color: #fff;
  transform: translateX(4px);
}

/* 客户案例 hover 提升 */
.case-card {
  position: relative;
  overflow: hidden;
}
.case-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition);
}
.case-card:hover::before { opacity: 1; }
.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3), 0 0 0 1px rgba(0,212,255,0.2);
}
.case-card .case-logo {
  transition: var(--transition);
}
.case-card:hover .case-logo {
  transform: scale(1.1) rotate(-5deg);
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.4);
}

/* 信任徽章区 */
.trust-section {
  padding: 60px 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  min-height: 120px;
}
.trust-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: var(--transition);
}
.trust-item:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.trust-item:hover::before { transform: scaleY(1); }
.trust-item .trust-icon {
  flex-shrink: 0;
  transition: var(--transition);
}
.trust-item:hover .trust-icon {
  background: var(--gradient-primary);
  color: #fff;
  transform: scale(1.1) rotate(-5deg);
}
.trust-content { flex: 1; min-width: 0; }
.trust-content h4 { font-size: 16px; margin-bottom: 4px; color: var(--color-text); }
.trust-content p { font-size: 13px; color: var(--color-text-2); line-height: 1.6; }
.trust-icon {
  width: 56px; height: 56px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}
.trust-content h4 { font-size: 17px; margin-bottom: 4px; color: var(--color-text); }
.trust-content p { font-size: 13px; color: var(--color-text-2); }

/* 套餐对比表 - 询价单元格 */
.compare-table .quote-cell {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 14px;
}

/* ========== 套餐对比表 ========== */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card);
  position: relative;
}
.table-wrap::-webkit-scrollbar { height: 8px; }
.table-wrap::-webkit-scrollbar-track { background: var(--color-bg-3); }
.table-wrap::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
.table-wrap::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14px;
}
.compare-table th, .compare-table td {
  padding: 16px 12px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}
.compare-table th {
  background: var(--color-bg-3);
  font-weight: 600;
  color: var(--color-text);
  position: sticky;
  top: 0;
}
.compare-table th:first-child, .compare-table td:first-child {
  text-align: left;
  font-weight: 500;
  background: var(--color-bg-2);
  position: sticky;
  left: 0;
  z-index: 2;
}
.compare-table th:first-child { z-index: 3; }
.compare-table tr:hover td { background: rgba(0,212,255,0.03); }
.compare-table .yes { color: var(--color-success); font-size: 18px; font-weight: 700; }
.compare-table .no { color: var(--color-text-3); font-size: 18px; }

.table-scroll-hint {
  display: none;
  text-align: center;
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-text-3);
}

/* ========== 客户案例 ========== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.case-card {
  padding: 24px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); border-color: var(--color-primary); }
.case-logo {
  width: 64px; height: 64px;
  margin: 0 auto 14px;
  background: var(--gradient-card);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}
.case-name { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.case-industry { font-size: 12px; color: var(--color-text-3); margin-bottom: 8px; }
.case-service { font-size: 12px; color: var(--color-primary); }

/* ========== CTA ========== */
.cta-section {
  background: var(--gradient-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 60%);
  pointer-events: none;
  animation: hero-glow 10s ease-in-out infinite;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,77,255,0.1) 0%, transparent 60%);
  pointer-events: none;
  animation: hero-glow 12s ease-in-out infinite reverse;
}
.cta-section > .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 36px; margin-bottom: 16px; }
.cta-section p { font-size: 17px; color: var(--color-text-2); margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ========== 服务详情页 ========== */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}
.service-detail-grid.reverse { direction: rtl; }
.service-detail-grid.reverse > * { direction: ltr; }

.service-detail-img {
  aspect-ratio: 4/3;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 96px;
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.service-detail-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(0,212,255,0.15) 0%, transparent 60%);
}

.service-content h2 { font-size: 32px; margin-bottom: 16px; }
.service-content > p { font-size: 16px; color: var(--color-text-2); margin-bottom: 24px; line-height: 1.8; }
.service-list { margin-bottom: 24px; }
.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--color-text);
}
.service-list .ico {
  width: 24px; height: 24px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario-card {
  padding: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.scenario-card:hover { border-color: var(--color-primary); transform: translateY(-4px); }
.scenario-emoji { font-size: 32px; margin-bottom: 12px; }
.scenario-card h4 { font-size: 16px; margin-bottom: 8px; }
.scenario-card p { font-size: 13px; color: var(--color-text-2); }

/* ========== 关于我们 ========== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-intro h2 { font-size: 32px; margin-bottom: 20px; }
.about-intro p { color: var(--color-text-2); margin-bottom: 16px; line-height: 1.8; }

.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 12px; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px; top: 6px;
  width: 14px; height: 14px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 3px var(--color-primary);
}
.timeline-year { font-size: 14px; color: var(--color-primary); font-weight: 700; margin-bottom: 4px; }
.timeline-title { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.timeline-desc { font-size: 14px; color: var(--color-text-2); }

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  padding: 28px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.team-card:hover { transform: translateY(-4px); border-color: var(--color-primary); }
.team-avatar {
  width: 88px; height: 88px;
  margin: 0 auto 16px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: #fff;
}
.team-name { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.team-role { font-size: 13px; color: var(--color-primary); margin-bottom: 10px; }
.team-bio { font-size: 13px; color: var(--color-text-2); }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cert-card {
  padding: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.cert-card:hover { transform: translateY(-4px); border-color: var(--color-primary); }
.cert-icon { font-size: 40px; margin-bottom: 12px; color: var(--color-warning); }
.cert-name { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.cert-desc { font-size: 13px; color: var(--color-text-2); }

/* ========== 联系我们 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
}

.contact-form {
  padding: 40px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text);
}
.form-group label .req { color: var(--color-danger); }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group .error-msg {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-danger);
  min-height: 18px;
}
.form-group.has-error input, .form-group.has-error textarea { border-color: var(--color-danger); }

.form-submit { width: 100%; justify-content: center; padding: 16px; font-size: 16px; }

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.show { display: block; }
.form-success .ok-icon {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  background: rgba(0,230,118,0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}
.form-success h3 { font-size: 22px; margin-bottom: 10px; }
.form-success p { color: var(--color-text-2); margin-bottom: 20px; }

.contact-info { padding: 20px 0; }
.contact-info h3 { font-size: 22px; margin-bottom: 24px; }
.info-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}
.info-item:last-child { border-bottom: none; }
.info-icon {
  width: 44px; height: 44px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.info-content { flex: 1; }
.info-label { font-size: 13px; color: var(--color-text-3); margin-bottom: 4px; }
.info-value { font-size: 15px; color: var(--color-text); font-weight: 500; }

.map-placeholder {
  margin-top: 24px;
  aspect-ratio: 16/10;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  color: var(--color-text-3);
  font-size: 14px;
}
.map-placeholder .map-icon { font-size: 40px; }

/* ========== 网站地图页 ========== */
.sitemap-tree { max-width: 800px; margin: 0 auto; }
.sitemap-section {
  margin-bottom: 32px;
  padding: 24px 28px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.sitemap-section h3 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sitemap-section h3::before {
  content: '📁';
  font-size: 20px;
}
.sitemap-list { padding-left: 8px; }
.sitemap-list li {
  padding: 6px 0;
  position: relative;
  padding-left: 20px;
}
.sitemap-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}
.sitemap-list a { font-size: 15px; }
.sitemap-list .desc { font-size: 13px; color: var(--color-text-3); margin-left: 8px; }

/* ========== 社交分享 ========== */
.social-share {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 8px;
  background: rgba(26, 33, 56, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  box-shadow: var(--shadow-md);
}
.social-share-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--color-text);
  font-size: 18px;
}
.social-share-btn:hover { transform: scale(1.1); }
.social-share-btn.wechat:hover { background: #07c160; color: #fff; border-color: #07c160; }
.social-share-btn.weibo:hover { background: #e6162d; color: #fff; border-color: #e6162d; }
.social-share-btn.qq:hover { background: #12b7f5; color: #fff; border-color: #12b7f5; }
.social-share-btn.copy:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* 分享弹窗 */
.share-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}
.share-modal.show { display: flex; }
.share-modal-content {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 400px;
  width: 100%;
  text-align: center;
}
.share-modal-content h3 { margin-bottom: 20px; }
.share-modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  cursor: pointer;
  color: var(--color-text);
}
.share-qr {
  width: 200px; height: 200px;
  margin: 0 auto 20px;
  background: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}
.share-tip { font-size: 13px; color: var(--color-text-3); margin-top: 8px; }

/* ========== 页脚 ========== */
.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 24px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--color-text);
}
.footer-brand p { color: var(--color-text-2); font-size: 14px; line-height: 1.7; margin-top: 12px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--color-text-2); font-size: 14px; }
.footer-links a:hover { color: var(--color-primary); }
.footer-contact-item { font-size: 14px; color: var(--color-text-2); margin-bottom: 8px; }
.footer-contact-item strong { color: var(--color-text); display: block; margin-bottom: 2px; font-size: 13px; font-weight: 500; }

.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  font-size: 16px;
}
.footer-social a:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-3);
}
.footer-bottom a { color: var(--color-text-2); margin: 0 8px; }

/* ========== Toast 提示 ========== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 14px 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: var(--transition);
  z-index: 3000;
  display: flex;
  align-items: center;
  gap: 10px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { border-color: var(--color-success); color: var(--color-success); }
.toast.error { border-color: var(--color-danger); color: var(--color-danger); }
.toast.info { border-color: var(--color-primary); color: var(--color-primary); }

/* ========== 联系我们页 v2 ========== */
.contact-main-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.contact-main-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 32px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.contact-main-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: var(--transition);
}
.contact-main-card:hover { transform: translateY(-4px); border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.contact-main-card:hover::before { opacity: 1; }
.contact-main-card > * { position: relative; z-index: 1; }
.contact-main-icon {
  font-size: 48px;
  margin-bottom: 16px;
  width: 72px; height: 72px;
  background: rgba(0,212,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.contact-main-card-phone .contact-main-icon {
  background: linear-gradient(135deg, #00d4ff 0%, #7c4dff 100%);
  color: #fff;
}
.contact-main-card:hover .contact-main-icon { transform: scale(1.1); }
.contact-main-label {
  font-size: 14px;
  color: var(--color-text-3);
  margin-bottom: 8px;
  font-weight: 500;
}
.contact-main-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  word-break: break-all;
}
.contact-main-action {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
}

.contact-section-title {
  font-size: 24px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.contact-detail-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: default;
}
.contact-detail-item[onclick] { cursor: pointer; }
.contact-detail-item:hover { border-color: var(--color-primary); transform: translateX(4px); }
.contact-detail-icon {
  width: 48px; height: 48px;
  background: rgba(0,212,255,0.1);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.contact-detail-body { flex: 1; min-width: 0; }
.contact-detail-label {
  font-size: 13px;
  color: var(--color-text-3);
  margin-bottom: 4px;
}
.contact-detail-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  word-break: break-all;
  margin-bottom: 4px;
}
.contact-detail-note {
  font-size: 12px;
  color: var(--color-text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.qr-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  margin-bottom: 20px;
  transition: var(--transition);
}
.qr-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.qr-real {
  width: 220px; height: 220px;
  margin: 0 auto 16px;
  padding: 10px;
  background: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}
.qr-real img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.qr-account {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
}
.qr-tip {
  margin-top: 10px;
  font-size: 12px;
  color: var(--color-text-3);
}

.address-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.address-card:hover { border-color: var(--color-primary); }
.address-icon {
  width: 48px; height: 48px;
  background: rgba(124,77,255,0.1);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.address-content { flex: 1; }
.address-label {
  font-size: 13px;
  color: var(--color-text-3);
  margin-bottom: 6px;
}
.address-value {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 12px;
}
.address-copy {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--color-primary);
  cursor: pointer;
  font-weight: 500;
}
.address-copy:hover { text-decoration: underline; }

.qualifications-section {
  padding: 80px 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.qual-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.qual-card {
  padding: 28px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.qual-card:hover { transform: translateY(-4px); border-color: var(--color-primary); }
.qual-icon {
  font-size: 36px;
  margin-bottom: 12px;
  color: var(--color-primary);
}
.qual-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}
.qual-value {
  font-size: 14px;
  color: var(--color-text-2);
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  margin-bottom: 14px;
  word-break: break-all;
}
.qual-link {
  display: inline-block;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
}
.qual-link:hover { text-decoration: underline; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item:hover { border-color: var(--color-primary); }
.faq-item[open] { border-color: var(--color-primary); }
.faq-item summary {
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--color-primary);
  font-weight: 300;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 22px 20px;
  color: var(--color-text-2);
  line-height: 1.8;
  font-size: 15px;
}
.faq-answer strong { color: var(--color-primary); }

/* ========== 合作伙伴 ========== */
.partners-section {
  padding: 80px 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.partner-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  min-height: 88px;
}
.partner-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--partner-color, var(--color-primary));
  transition: width 0.3s ease;
}
.partner-card:hover {
  transform: translateY(-4px);
  border-color: var(--partner-color, var(--color-primary));
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.partner-card:hover::before { width: 6px; }
.partner-logo {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  transition: var(--transition);
}
.partner-logo img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.partner-card:hover .partner-logo {
  transform: scale(1.1) rotate(-3deg);
}
.partner-info { flex: 1; min-width: 0; }
.partner-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
  line-height: 1.3;
}
.partner-tag {
  font-size: 12px;
  color: var(--partner-color, var(--color-primary));
  font-weight: 500;
}

/* ========== 痛点+解决方案区 ========== */
.problems-section {
  padding: 80px 0;
  background: var(--color-bg);
  position: relative;
}
.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.problem-card {
  padding: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--color-danger) 0%, var(--color-primary) 50%, var(--color-success) 100%);
}
.problem-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* 痛点区:横排,emoji + 文字 */
.problem-pain {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.problem-emoji {
  font-size: 32px;
  width: 48px; height: 48px;
  background: rgba(255, 82, 82, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
}
.problem-pain-text {
  flex: 1;
  min-width: 0;
}
.problem-tag {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(255, 82, 82, 0.15);
  color: #ff6b6b;
  font-size: 11px;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.problem-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 6px;
}
.problem-text {
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* 分隔箭头 */
.problem-divider {
  text-align: center;
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
  position: relative;
  padding: 4px 0;
}
.problem-divider::before,
.problem-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--color-border);
}
.problem-divider::before { left: 0; }
.problem-divider::after { right: 0; }

/* 解决区:横排,✓ + 文字 */
.problem-solution {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.solution-emoji {
  width: 32px; height: 32px;
  background: var(--color-success);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 230, 118, 0.3);
  line-height: 1;
}
.solution-content {
  flex: 1;
  min-width: 0;
}
.solution-tag {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(0, 230, 118, 0.15);
  color: var(--color-success);
  font-size: 11px;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.solution-text {
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.7;
}
.solution-text strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 48px; }
  .section-header h2 { font-size: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .service-detail-grid, .about-intro, .contact-grid, .contact-detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .service-detail-grid.reverse { direction: ltr; }
  .plan-card.featured { transform: none; }
  .plan-card.featured:hover { transform: translateY(-6px); }

  /* 网格降级:4列→2列,3列→2列 */
  .features-grid,
  .partners-grid,
  .problems-grid,
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid,
  .team-grid,
  .cert-grid,
  .qual-grid,
  .trust-grid,
  .contact-main-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  section { padding: 60px 0; }
  .hero { padding: 60px 0; }
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 16px; }

  /* 网格降级:全部 1 列 */
  .features-grid,
  .partners-grid,
  .problems-grid,
  .scenario-grid,
  .cases-grid,
  .team-grid,
  .cert-grid,
  .qual-grid,
  .trust-grid,
  .contact-main-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 60px 0 40px; }
  .page-hero h1 { font-size: 32px; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 26px; }

  .menu-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    transform: translateY(-110%);
    transition: var(--transition);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { padding: 12px 16px; }
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0 0 0 16px;
  }
  .nav-cta { margin: 8px 0 0; text-align: center; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .social-share { right: 10px; padding: 8px 6px; }
  .social-share-btn { width: 36px; height: 36px; font-size: 16px; }
  .table-scroll-hint { display: block; }
}

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