/* ============================================
   Dreamind GEO GEO平台 - 主样式表
   ============================================ */

/* ---- CSS变量 ---- */
:root {
  --bg-primary:    #060B18;
  --bg-secondary:  #0A0E1A;
  --bg-card:       rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);

  --blue-primary:  #1677FF;
  --blue-dark:     #0052D9;
  --cyan:          #00D4FF;
  --purple:        #7B2FFF;
  --orange:        #FF6B00;
  --orange-light:  #FF9500;
  --green:         #52C41A;

  --text-primary:  #FFFFFF;
  --text-secondary:#94A3B8;
  --text-muted:    #4A5568;
  --border:        rgba(255,255,255,0.08);
  --border-hover:  rgba(22,119,255,0.4);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-blue: 0 8px 32px rgba(22,119,255,0.25);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);

  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
input, select, textarea, button { font-family: inherit; }

/* ---- 容器 ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(6,11,24,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(6,11,24,0.97);
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}
.logo-icon {
  font-size: 24px;
  background: linear-gradient(135deg, var(--cyan), var(--blue-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-text { color: var(--text-primary); }
.logo-text em {
  font-style: normal;
  background: linear-gradient(90deg, var(--cyan), var(--blue-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 15px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-icon-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: pointer;
  background: transparent;
}
.nav-icon-btn:hover {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
}
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-mobile-toggle span {
  width: 22px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
  display: block;
}
.nav-mobile { display: none; }

/* ============================================
   按钮
   ============================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(90deg, var(--blue-primary), var(--blue-dark));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-blue);
  filter: brightness(1.1);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  color: var(--blue-primary);
  border: 1px solid var(--blue-primary);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-outline:hover {
  background: rgba(22,119,255,0.1);
  transform: translateY(-1px);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-ghost:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.2); }
.btn-lg  { padding: 12px 32px; font-size: 16px; border-radius: var(--radius-md); }
.btn-xl  { padding: 16px 40px; font-size: 17px; border-radius: var(--radius-md); }
.w100    { width: 100%; justify-content: center; }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 64px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22,119,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22,119,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 8s ease-in-out infinite;
}
.glow1 { width: 600px; height: 600px; background: radial-gradient(circle, var(--blue-dark) 0%, transparent 70%); top: -10%; left: -10%; animation-delay: 0s; }
.glow2 { width: 400px; height: 400px; background: radial-gradient(circle, var(--purple) 0%, transparent 70%); top: 20%; right: -5%; animation-delay: 3s; }
.glow3 { width: 300px; height: 300px; background: radial-gradient(circle, var(--cyan) 0%, transparent 70%); bottom: 10%; left: 30%; animation-delay: 6s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 10px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 24px 40px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(22,119,255,0.12);
  border: 1px solid rgba(22,119,255,0.3);
  border-radius: 100px;
  font-size: 13px;
  color: var(--cyan);
  margin-bottom: 24px;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.gradient-text {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--blue-primary) 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero-trust {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
  font-size: 13px;
  color: var(--text-secondary);
}
.hero-trust span { display: flex; align-items: center; gap: 5px; }

/* 统计数据 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.stat-card {
  background: rgba(22,119,255,0.06);
  border: 1px solid rgba(22,119,255,0.15);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: left;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.stat-card:hover {
  border-color: rgba(22,119,255,0.4);
  background: rgba(22,119,255,0.1);
}
.stat-card.highlight {
  background: rgba(0,212,255,0.06);
  border-color: rgba(0,212,255,0.2);
}
.stat-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--cyan);
  font-feature-settings: "tnum";
  line-height: 1;
  margin-bottom: 6px;
}
.stat-value::after { content: attr(data-suffix); font-size: 16px; }
.stat-hot {
  display: inline-block;
  background: rgba(255,107,0,0.2);
  color: var(--orange);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}
.stat-query {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.4;
}
.stat-change { font-size: 12px; color: var(--green); }

/* AI平台滚动 */
.ai-platforms {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 20px 0;
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.platform-track {
  display: flex;
  gap: 48px;
  animation: scroll-x 20s linear infinite;
  width: max-content;
}
.platform-track span {
  font-size: 14px;
  color: var(--text-muted);
  white-space: nowrap;
  font-weight: 600;
  letter-spacing: 0.05em;
}
@keyframes scroll-x {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   通用Section头
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(22,119,255,0.12);
  border: 1px solid rgba(22,119,255,0.25);
  border-radius: 100px;
  font-size: 13px;
  color: var(--cyan);
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   痛点区
   ============================================ */
.pain-section {
  padding: 96px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.pain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}
.pain-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}
.pain-card.featured {
  border-color: rgba(22,119,255,0.35);
  background: linear-gradient(135deg, rgba(22,119,255,0.08), rgba(0,212,255,0.04));
}
.pain-icon { font-size: 32px; margin-bottom: 16px; }
.pain-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}
.pain-card ul {
  list-style: none;
  margin-bottom: 20px;
}
.pain-card ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
}
.pain-card ul li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--blue-primary);
}
.pain-stat {
  font-size: 13px;
  color: var(--text-secondary);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.stat-num {
  font-size: 24px;
  font-weight: 800;
  margin-right: 4px;
}
.danger-text { color: #FF4D4F; }
.primary-text { color: var(--blue-primary); }
.success-text { color: var(--green); }

/* ============================================
   功能区
   ============================================ */
.features-section {
  padding: 96px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue-primary), var(--purple));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(22,119,255,0.12);
}
.feature-card:hover::before { opacity: 1; }
.feature-num {
  position: absolute;
  top: 28px; right: 28px;
  font-size: 48px;
  font-weight: 800;
  color: rgba(255,255,255,0.04);
  font-feature-settings: "tnum";
  line-height: 1;
}
.feature-icon { margin-bottom: 20px; }
.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card > p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}
.feature-list {
  list-style: none;
  margin-bottom: 24px;
}
.feature-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0;
  padding-left: 18px;
  position: relative;
}
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
}
.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(22,119,255,0.1);
  border: 1px solid rgba(22,119,255,0.2);
  border-radius: 100px;
  font-size: 12px;
  color: var(--cyan);
}
.features-cta { text-align: center; }

/* ============================================
   数据背书
   ============================================ */
.data-section {
  padding: 64px 0;
  background: linear-gradient(90deg, rgba(22,119,255,0.05) 0%, rgba(0,212,255,0.03) 50%, rgba(123,47,255,0.05) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.data-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.data-item {
  flex: 1;
  min-width: 180px;
  text-align: center;
  padding: 24px;
}
.data-value {
  font-size: 52px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--blue-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}
.data-value span { font-size: 28px; }
.data-label { font-size: 14px; color: var(--text-secondary); }
.data-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
  flex-shrink: 0;
}

/* ============================================
   定价区
   ============================================ */
.pricing-section {
  padding: 96px 0;
  background: var(--bg-secondary);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 32px;
  max-width: 880px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  transition: var(--transition);
}
.pricing-card:hover {
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}
.pricing-card.featured {
  background: linear-gradient(135deg, rgba(22,119,255,0.1), rgba(123,47,255,0.06));
  border-color: rgba(22,119,255,0.4);
  box-shadow: 0 0 60px rgba(22,119,255,0.1);
}
.pricing-recommend {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--orange), var(--orange-light));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 20px;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing-header { margin-bottom: 28px; }
.pricing-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
}
.pricing-badge.tool {
  background: rgba(22,119,255,0.15);
  color: var(--blue-primary);
}
.pricing-badge.service {
  background: rgba(0,212,255,0.15);
  color: var(--cyan);
}
.pricing-header h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.pricing-header p  { font-size: 13px; color: var(--text-secondary); }
.pricing-features { margin-bottom: 28px; }
.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.pricing-feature:last-child { border-bottom: none; }
.pricing-feature.disabled { opacity: 0.35; }
.pricing-feature strong { color: var(--text-primary); }
.pricing-feature svg { flex-shrink: 0; margin-top: 2px; }

/* ============================================
   解决方案
   ============================================ */
.solutions-section {
  padding: 96px 0;
}
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  cursor: pointer;
  transition: var(--transition);
  display: block;
}
.solution-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}
.solution-icon { font-size: 32px; margin-bottom: 12px; }
.solution-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.solution-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.solutions-cta { text-align: center; }

/* ============================================
   案例
   ============================================ */
.cases-section {
  padding: 96px 0;
  background: var(--bg-secondary);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.case-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}
.case-logo {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.case-result {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}
.result-num {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--blue-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.result-label { font-size: 13px; color: var(--text-secondary); }
.case-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}
.case-tags { display: flex; gap: 8px; }
.case-tags span {
  padding: 3px 10px;
  background: rgba(22,119,255,0.1);
  border: 1px solid rgba(22,119,255,0.2);
  border-radius: 4px;
  font-size: 11px;
  color: var(--blue-primary);
}
.cases-cta { text-align: center; }

/* ============================================
   底部CTA
   ============================================ */
.cta-section {
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.cta-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(22,119,255,0.2) 0%, transparent 70%);
  filter: blur(40px);
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
}
.cta-content h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}
.cta-content p strong { color: var(--cyan); }
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.cta-promise {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ============================================
   页脚
   ============================================ */
.footer {
  padding: 64px 0 32px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 12px;
  margin-bottom: 20px;
  line-height: 1.7;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-social a:hover { border-color: var(--blue-primary); color: var(--blue-primary); }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--blue-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================
   弹窗
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: #0D1528;
  border: 1px solid rgba(22,119,255,0.3);
  border-radius: var(--radius-xl);
  padding: 40px;
  width: 90%;
  max-width: 480px;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06);
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }
.modal-header { text-align: center; margin-bottom: 32px; }
.modal-icon { font-size: 40px; margin-bottom: 12px; }
.modal-header h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.modal-header p { font-size: 14px; color: var(--text-secondary); }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-secondary);
}
.required { color: #FF4D4F; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-primary);
  background: rgba(22,119,255,0.05);
}
.form-group select option { background: #0D1528; }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-tip {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
}
.form-success {
  text-align: center;
  padding: 20px 0;
}
.success-icon { font-size: 48px; margin-bottom: 16px; }
.form-success h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }
.form-success p strong { color: var(--cyan); }

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: var(--blue-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { background: var(--blue-dark); transform: translateY(-2px); }

/* ============================================
   动画
   ============================================ */
.animate-fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.7s ease forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero-stats { grid-template-columns: repeat(2,1fr); }
  .pain-grid  { grid-template-columns: repeat(1,1fr); }
  .features-grid { grid-template-columns: repeat(1,1fr); }
  .solutions-grid { grid-template-columns: repeat(2,1fr); }
  .cases-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links  { display: none; }
  .nav-actions { gap: 8px; }
  .nav-actions .btn-ghost { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-mobile {
    display: none;
    padding: 16px 24px 20px;
    border-top: 1px solid var(--border);
    flex-direction: column;
    gap: 4px;
  }
  .nav-mobile.open { display: flex; }
  .nav-mobile a {
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 15px;
  }
  .nav-mobile a:hover { background: var(--bg-card); color: var(--text-primary); }
  .hero-content { padding: 60px 16px 32px; }
  .hero-stats { grid-template-columns: repeat(2,1fr); }
  .hero-trust { gap: 12px; }
  .pain-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .data-grid { flex-direction: column; gap: 24px; }
  .data-divider { width: 60px; height: 1px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-promise { gap: 16px; flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .modal { padding: 28px 20px; }
}