/* ========================================
   通维咨询官网 - 全新设计系统 v3.0
   设计理念：认知驱动、价值优先、移动优先
   主色调：#2ECC71（浅绿色系，保留用户满意度）
   ======================================== */

/* ========================================
   设计变量
   ======================================== */
:root {
  /* 主色调 - 绿色系（保留） */
  --primary: #2ECC71;
  --primary-dark: #27AE60;
  --primary-darker: #1E8449;
  --primary-light: #E8F8F0;
  --primary-lighter: #F4FCF7;
  --primary-gradient: linear-gradient(135deg, #2ECC71 0%, #27AE60 100%);
  --primary-gradient-soft: linear-gradient(135deg, #E8F8F0 0%, #F4FCF7 100%);

  /* 中性色 */
  --white: #FFFFFF;
  --off-white: #FAFBFC;
  --light-gray: #F3F4F6;
  --medium-gray: #E5E7EB;
  --dark-gray: #6B7280;
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #94A3B8;
  --text-inverse: #FFFFFF;

  /* 背景层级 */
  --bg-1: #FFFFFF;
  --bg-2: #FAFBFC;
  --bg-3: #F4FCF7;
  --bg-dark: #0F172A;

  /* 阴影 - 柔和现代 */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.12);
  --shadow-2xl: 0 32px 64px rgba(15, 23, 42, 0.16);
  --shadow-primary: 0 8px 24px rgba(46, 204, 113, 0.25);

  /* 圆角 */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* 间距系统 - 4px基础 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 动画 */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease);
  --transition-base: 300ms var(--ease);
  --transition-slow: 500ms var(--ease);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01';
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-1);
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ========================================
   容器
   ======================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-8); }
}

/* ========================================
   导航栏 - 现代毛玻璃
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  transition: var(--transition-base);
}

.header-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition-base);
}

.header.scrolled .header-backdrop {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: var(--medium-gray);
  box-shadow: var(--shadow-sm);
}

.nav {
  position: relative;
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 10;
}

.logo {
  height: 32px;
  width: auto;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  height: 100%;
}

.nav-menu > li {
  height: 100%;
  display: flex;
  align-items: center;
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-dark);
  background: var(--primary-light);
}

.nav-link.active {
  color: var(--primary-dark);
  background: var(--primary-light);
}

.dropdown-arrow {
  width: 14px;
  height: 14px;
  opacity: 0.6;
  transition: var(--transition-fast);
}

.nav-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
  opacity: 1;
}

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 320px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--medium-gray);
  padding: var(--space-3);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.dropdown-menu a:hover {
  background: var(--primary-lighter);
}

.dropdown-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  font-size: 20px;
  flex-shrink: 0;
}

.dropdown-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-content strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.dropdown-content span {
  font-size: 12px;
  color: var(--text-muted);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-5);
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-primary);
  transition: var(--transition-base);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(46, 204, 113, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-2);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* ========================================
   Hero - 全新设计
   ======================================== */
.hero-new {
  position: relative;
  min-height: calc(100vh - 72px);
  margin-top: 72px;
  padding: var(--space-20) 0 var(--space-16);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-3) 0%, var(--bg-1) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  opacity: 0.4;
  pointer-events: none;
}

.hero-cell {
  position: relative;
  background: radial-gradient(circle at center, rgba(46, 204, 113, 0.12) 0%, transparent 60%);
}

.hero-cell.c2 { background: radial-gradient(circle at center, rgba(46, 204, 113, 0.08) 0%, transparent 60%); }
.hero-cell.c3 { background: radial-gradient(circle at center, rgba(46, 204, 113, 0.06) 0%, transparent 60%); }
.hero-cell.c4 { background: radial-gradient(circle at center, rgba(46, 204, 113, 0.1) 0%, transparent 60%); }

.hero-content {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--space-6);
}

.hero-badge-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: 13px;
  font-weight: 500;
  color: var(--primary-darker);
  background: var(--white);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6.5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.hero-title .highlight {
  position: relative;
  color: var(--primary-dark);
  display: inline-block;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30%;
  background: var(--primary-light);
  z-index: -1;
  border-radius: var(--radius-sm);
}

.hero-subtitle {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto var(--space-10);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.hero-stat-row {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-8);
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

.hero-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--medium-gray);
}

/* ========================================
   按钮系统
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  color: var(--white);
  background: var(--primary-gradient);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(46, 204, 113, 0.4);
}

.btn-ghost {
  color: var(--text-primary);
  background: var(--white);
  border-color: var(--medium-gray);
}

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

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline-white {
  color: var(--white);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.8);
}

.btn-lg { padding: var(--space-4) var(--space-6); font-size: 15px; }
.btn-xl { padding: var(--space-4) var(--space-8); font-size: 16px; }
.btn-full { width: 100%; }

/* ========================================
   通用章节
   ======================================== */
.section-header-new {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-16);
}

.section-label {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-darker);
  background: var(--primary-light);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.section-title-new {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle-new {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ========================================
   信任背书区
   ======================================== */
.trust-section {
  padding: var(--space-20) 0;
  background: var(--bg-2);
}

.trust-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.trust-label {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-darker);
  background: var(--primary-light);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.trust-card {
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.trust-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-base);
}

.trust-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.trust-card:hover::before {
  transform: scaleX(1);
}

.trust-number {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  color: var(--primary-light);
  letter-spacing: -0.05em;
}

.trust-icon {
  font-size: 40px;
  margin-bottom: var(--space-4);
}

.trust-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.trust-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.trust-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.trust-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 14px;
  color: var(--text-secondary);
}

.trust-list li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   解决方案路径
   ======================================== */
.solutions-section {
  padding: var(--space-20) 0;
  background: var(--bg-1);
}

.solution-path {
  display: flex;
  align-items: stretch;
  gap: var(--space-4);
  max-width: 1100px;
  margin: 0 auto;
}

.path-step {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: var(--transition-base);
}

.path-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.path-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary-darker);
  font-weight: 800;
  font-size: 14px;
  border-radius: var(--radius-full);
}

.path-icon {
  font-size: 40px;
  margin-bottom: var(--space-4);
}

.path-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.path-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.path-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.path-list li {
  position: relative;
  padding-left: var(--space-5);
  font-size: 13px;
  color: var(--text-secondary);
}

.path-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

.path-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  transition: var(--transition-fast);
}

.path-link:hover {
  gap: var(--space-2);
  color: var(--primary-darker);
}

.path-arrow {
  display: flex;
  align-items: center;
  color: var(--primary);
  flex-shrink: 0;
}

.path-arrow svg {
  width: 24px;
  height: 24px;
}

/* ========================================
   行业案例
   ======================================== */
.cases-section-new {
  padding: var(--space-20) 0;
  background: var(--bg-2);
}

.case-cards-new {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.case-card-new {
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.case-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.case-tag {
  display: inline-block;
  padding: 4px var(--space-3);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-darker);
  background: var(--primary-light);
  border-radius: var(--radius-full);
}

.case-icon {
  font-size: 28px;
}

.case-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.case-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.case-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.case-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.case-metric-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  letter-spacing: -0.02em;
}

.case-metric-label {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.3;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-top: auto;
  transition: var(--transition-fast);
}

.case-link:hover {
  gap: var(--space-2);
}

/* ========================================
   客户证言
   ======================================== */
.testimonials-section-new {
  padding: var(--space-20) 0;
  background: var(--bg-1);
}

.testimonial-cards-new {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial-card-new {
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: var(--transition-base);
}

.testimonial-card-new:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.testimonial-quote-mark {
  position: absolute;
  top: var(--space-6);
  right: var(--space-8);
  font-size: 80px;
  line-height: 0.6;
  color: var(--primary-light);
  font-family: Georgia, serif;
}

.testimonial-text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  font-weight: 500;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--medium-gray);
}

.testimonial-author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.testimonial-author-role {
  font-size: 13px;
  color: var(--text-muted);
}

.testimonial-date {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========================================
   ROI 计算器
   ======================================== */
.roi-section {
  padding: var(--space-20) 0;
  background: var(--bg-2);
}

.roi-card {
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-2xl);
  padding: var(--space-12);
  box-shadow: var(--shadow-lg);
  max-width: 960px;
  margin: 0 auto;
}

.roi-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.roi-label {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-darker);
  background: var(--primary-light);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.roi-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.roi-calculator-simple {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.roi-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.roi-input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.roi-input-value {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary-dark);
}

.roi-calculator-simple input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--medium-gray);
  border-radius: var(--radius-full);
  outline: none;
}

.roi-calculator-simple input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-primary);
}

.roi-calculator-simple input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.roi-select {
  padding: var(--space-3) var(--space-4);
  font-size: 15px;
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--text-primary);
  cursor: pointer;
}

.roi-result {
  text-align: center;
  padding: var(--space-8);
  background: var(--primary-gradient-soft);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-lg);
}

.roi-result-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.roi-result-value {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--primary-darker);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.roi-result-note {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========================================
   FAQ
   ======================================== */
.faq-section-new {
  padding: var(--space-20) 0;
  background: var(--bg-1);
}

.faq-accordion-new {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item-new {
  background: var(--white);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
}

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

.faq-item-new.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-header-new {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  gap: var(--space-4);
}

.faq-title-new {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.faq-toggle-new {
  position: relative;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.faq-toggle-new span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  background: var(--primary);
  transform: translate(-50%, -50%);
  transition: var(--transition-base);
}

.faq-toggle-new .faq-minus {
  transform: translate(-50%, -50%) scaleX(0);
}

.faq-item-new.active .faq-toggle-new .faq-plus {
  transform: translate(-50%, -50%) scaleX(0);
}

.faq-item-new.active .faq-toggle-new .faq-minus {
  transform: translate(-50%, -50%) scaleX(1);
}

.faq-body-new {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease);
}

.faq-item-new.active .faq-body-new {
  max-height: 400px;
}

.faq-body-new p {
  padding: 0 var(--space-6) var(--space-5);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ========================================
   CTA
   ======================================== */
.cta-section-new {
  padding: var(--space-20) 0;
}

.cta-card-new {
  background: var(--primary-gradient);
  border-radius: var(--radius-2xl);
  padding: var(--space-16);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.cta-content-new {
  position: relative;
  z-index: 2;
  flex: 1;
  max-width: 640px;
}

.cta-label-new {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-darker);
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.cta-title-new {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: var(--space-4);
  letter-spacing: -0.025em;
}

.cta-desc-new {
  font-size: 17px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--space-6);
}

.cta-cta-group {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.cta-visual-new {
  position: relative;
  width: 280px;
  height: 280px;
  flex-shrink: 0;
}

.cta-visual-circle {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: pulse 4s ease-in-out infinite;
}

.cta-visual-circle.c1 {
  inset: 0;
  animation-delay: 0s;
}

.cta-visual-circle.c2 {
  inset: 20%;
  animation-delay: 1.3s;
}

.cta-visual-circle.c3 {
  inset: 40%;
  animation-delay: 2.6s;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 1; }
}

/* ========================================
   页脚
   ======================================== */
.footer-new {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--space-20) 0 var(--space-8);
}

.footer-grid-new {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand-new {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.footer-desc-new {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-5);
}

.footer-community {
  margin-top: var(--space-4);
}

.community-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 11px;
  font-weight: 500;
  color: var(--primary-light);
  background: rgba(46, 204, 113, 0.15);
  border: 1px solid rgba(46, 204, 113, 0.3);
  border-radius: var(--radius-sm);
}

.footer-heading-new {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-4);
}

.footer-links-list,
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links-list a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--primary-light);
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

.footer-contact-list svg {
  color: var(--primary);
  flex-shrink: 0;
}

.footer-bottom-new {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.copyright-new {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.beian-new {
  display: flex;
  gap: var(--space-4);
  font-size: 13px;
}

.beian-new a {
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition-fast);
}

.beian-new a:hover {
  color: var(--primary-light);
}

/* ========================================
   响应式 - 移动优先
   ======================================== */
@media (max-width: 1024px) {
  .trust-grid,
  .case-cards-new {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-path {
    flex-direction: column;
  }

  .path-arrow {
    transform: rotate(90deg);
    margin: var(--space-2) auto;
  }

  .testimonial-cards-new {
    grid-template-columns: 1fr;
  }

  .cta-card-new {
    flex-direction: column;
    text-align: center;
    padding: var(--space-10);
  }

  .cta-cta-group {
    justify-content: center;
  }

  .cta-visual-new {
    display: none;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--space-4);
    box-shadow: var(--shadow-xl);
    border-bottom: 1px solid var(--medium-gray);
    height: auto;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu > li {
    height: auto;
    width: 100%;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .trust-grid,
  .case-cards-new,
  .footer-grid-new {
    grid-template-columns: 1fr;
  }

  .hero-stat-row {
    flex-direction: column;
    gap: var(--space-4);
  }

  .hero-stat-divider {
    width: 32px;
    height: 1px;
  }

  .section-header-new {
    margin-bottom: var(--space-10);
  }

  .roi-card {
    padding: var(--space-6);
  }
}

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

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   工具类
   ======================================== */
.text-center { text-align: center; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }