/* ============================================
   鱼米OPC官网 - 全局样式
   Professional Enterprise Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --bg-primary: #0b111e;
  --bg-secondary: #101827;
  --bg-tertiary: #182032;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.065);
  --bg-glass: rgba(255, 255, 255, 0.05);

  --color-primary: #3b82f6;
  --color-primary-light: #60a5fa;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #06b6d4;
  --color-accent: #f59e0b;
  --color-accent2: #ef4444;
  --color-success: #10b981;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --gradient-hero: linear-gradient(160deg, #0b111e 0%, #111d32 40%, #0e1726 100%);
  --gradient-blue: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
  --gradient-purple: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-warm: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  --gradient-green: linear-gradient(135deg, #059669 0%, #10b981 100%);
  --gradient-red: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  --gradient-cyan: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);

  --border-color: rgba(148, 163, 184, 0.1);
  --border-hover: rgba(59, 130, 246, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.1);

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

  --nav-height: 72px;
  --container-width: 1200px;

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-secondary);
}

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

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

.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary-light);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  padding: 6px 20px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 38px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.2px;
}

.btn-primary {
  background: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(29, 78, 216, 0.3);
  border: 1px solid rgba(96, 165, 250, 0.2);
}

.btn-primary:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29, 78, 216, 0.4);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(11, 17, 30, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--text-primary);
}

.nav-brand .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-blue);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  margin-left: 16px;
}

.nav-cta .btn {
  padding: 9px 22px;
  font-size: 13px;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.hero-bg .grid-lines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  animation: orbFloat 12s ease-in-out infinite;
}

.hero-bg .orb-1 {
  width: 600px;
  height: 600px;
  background: rgba(29, 78, 216, 0.12);
  top: -15%;
  right: -10%;
  animation-delay: 0s;
}

.hero-bg .orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.08);
  bottom: -10%;
  left: -8%;
  animation-delay: -4s;
}

.hero-bg .orb-3 {
  width: 300px;
  height: 300px;
  background: rgba(6, 182, 212, 0.06);
  top: 50%;
  left: 40%;
  animation-delay: -8s;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.03); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.15);
  padding: 7px 18px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: 54px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.1s both;
  letter-spacing: -1px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 56px;
  justify-content: center;
  margin-top: 72px;
  animation: fadeInUp 0.8s ease 0.4s both;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.hero-stat {
  text-align: center;
}

.hero-stat .stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.hero-stat .stat-number .accent {
  color: var(--color-primary-light);
}

.hero-stat .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ---------- Section Illustration ---------- */
.section-illustration {
  display: flex;
  justify-content: center;
  margin-bottom: 48px;
}

.section-illustration svg {
  max-width: 100%;
  height: auto;
}

/* ---------- Features / Advantages ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:nth-child(1)::before { background: var(--gradient-blue); }
.feature-card:nth-child(2)::before { background: var(--gradient-purple); }
.feature-card:nth-child(3)::before { background: var(--gradient-cyan); }
.feature-card:nth-child(4)::before { background: var(--gradient-warm); }
.feature-card:nth-child(5)::before { background: var(--gradient-green); }
.feature-card:nth-child(6)::before { background: var(--gradient-blue); }

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  border-color: var(--border-hover);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  color: #fff;
}

.feature-card:nth-child(1) .feature-icon { background: var(--gradient-blue); }
.feature-card:nth-child(2) .feature-icon { background: var(--gradient-purple); }
.feature-card:nth-child(3) .feature-icon { background: var(--gradient-cyan); }
.feature-card:nth-child(4) .feature-icon { background: var(--gradient-warm); }
.feature-card:nth-child(5) .feature-icon { background: var(--gradient-green); }
.feature-card:nth-child(6) .feature-icon { background: var(--gradient-blue); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- Solutions ---------- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  gap: 20px;
  transition: all var(--transition-base);
}

.solution-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.solution-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.solution-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.solution-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.solution-card .learn-more {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-light);
  transition: gap var(--transition-fast);
}

.solution-card:hover .learn-more {
  gap: 8px;
}

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.service-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  border-color: var(--border-hover);
}

.service-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: rgba(59, 130, 246, 0.08);
  color: var(--color-primary-light);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon {
  background: var(--gradient-blue);
  color: #fff;
  transform: scale(1.05);
}

.service-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---------- Architecture Showcase ---------- */
.architecture-section {
  background: var(--bg-secondary);
}

.architecture-visual {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-top: 40px;
}

.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.arch-level {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.arch-node {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 24px;
  text-align: center;
  transition: all var(--transition-base);
  min-width: 130px;
}

.arch-node:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.arch-node.primary {
  background: var(--gradient-blue);
  border: none;
  color: #fff;
}

.arch-node.primary .arch-role {
  color: rgba(255,255,255,0.75);
}

.arch-node .arch-emoji {
  font-size: 24px;
  margin-bottom: 4px;
}

.arch-node .arch-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.arch-node .arch-role {
  font-size: 12px;
  color: var(--text-muted);
}

.arch-connector {
  display: flex;
  justify-content: center;
}

.arch-connector svg {
  color: var(--color-primary);
  opacity: 0.3;
}

/* ---------- Stats / Numbers ---------- */
.stats-section {
  background: var(--bg-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.stat-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------- CTA Section ---------- */
.cta-section {
  text-align: center;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 120%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.cta-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

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

/* ---------- Integrations ---------- */
.integrations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.integration-group {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.integration-category {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.integration-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.integration-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.integration-item svg {
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.integration-item:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.06);
}

.integration-item:hover svg {
  color: var(--color-primary-light);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .nav-brand {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-col ul a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--border-hover);
  color: var(--color-primary-light);
}

/* ---------- Page Hero (Inner Pages) ---------- */
.page-hero {
  padding: 160px 0 80px;
  text-align: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}

.page-hero h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  position: relative;
  letter-spacing: -0.5px;
}

.page-hero p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
  position: relative;
}

/* ---------- Content Cards (Inner Pages) ---------- */
.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 20px;
  transition: all var(--transition-base);
}

.content-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.content-card h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.content-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.content-card p, .content-card li {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 15px;
}

.content-card ul {
  padding-left: 20px;
  margin: 12px 0;
}

.content-card ul li {
  margin-bottom: 6px;
}

/* ---------- Process / Timeline ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.process-step {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all var(--transition-base);
}

.process-step:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--gradient-blue);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- Pricing / Plans ---------- */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

.plan-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.1);
}

.plan-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-blue);
  color: #fff;
  padding: 3px 18px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.plan-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
}

.plan-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.plan-price {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -1px;
}

.plan-price span {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin: 20px 0;
  text-align: left;
}

.plan-features li {
  padding: 9px 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  font-size: 13px;
}

/* ---------- Contact Form ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-info-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary-light);
  flex-shrink: 0;
}

.contact-info-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact-info-card p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .plans-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .integrations-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 34px; }
  .hero .hero-desc { font-size: 16px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 26px; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 17, 30, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 2px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 18px;
    font-size: 16px;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .features-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat .stat-number { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: center; }

  .stat-number { font-size: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .page-hero { padding: 120px 0 60px; }
  .page-hero h1 { font-size: 30px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
}