/* ========================================
   MESOFT - AI Low-Code Platform
   Global Styles - Dark Theme with AI Aesthetic
   ======================================== */

/* CSS Variables */
:root {
  --primary-blue: #2563eb;
  --primary-purple: #7c3aed;
  --primary-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #22d3ee;
  --dark-bg: #0a0e1a;
  --dark-bg-2: #0f1429;
  --dark-bg-3: #141a36;
  --dark-card: #1a2040;
  --dark-card-hover: #1e2550;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-main: linear-gradient(135deg, var(--primary-blue), var(--primary-purple), var(--primary-cyan));
  --gradient-blue-purple: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  --gradient-purple-cyan: linear-gradient(135deg, var(--primary-purple), var(--primary-cyan));
  --gradient-glow: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(124,58,237,0.3), rgba(6,182,212,0.3));
  --content-width: 1600px;
  --header-height: 80px;
}

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

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

body {
  font-family: 'Microsoft YaHei', '微软雅黑', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s;
}

ul, ol {
  list-style: none;
}

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

/* Container */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background 0.3s, box-shadow 0.3s;
}

.header.scrolled {
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--glass-border);
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}

.header-logo img {
    height: 25px !important;
    width: auto !important;
    display: block;
    object-fit: contain; /* 不变形 */
}

.header-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-main);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
}

.header-logo .logo-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-item {
  position: relative;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.3s;
  border-radius: 8px;
}

.nav-item:hover,
.nav-item.active {
  color: var(--text-primary);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}

/* Dropdown */
.dd-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  cursor: pointer;
}

.nav-item.has-dropdown .dropdown-arrow {
  display: inline-block;
  margin-left: 4px;
  transition: transform 0.3s;
  font-size: 10px;
}

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

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 240px;
  background: rgba(20, 26, 54, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.nav-item.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.dropdown-menu a:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.dropdown-menu a .dd-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.dropdown-menu a .dd-icon.blue { background: rgba(37, 99, 235, 0.2); color: var(--accent-blue); }
.dropdown-menu a .dd-icon.purple { background: rgba(124, 58, 237, 0.2); color: var(--accent-purple); }
.dropdown-menu a .dd-icon.cyan { background: rgba(6, 182, 212, 0.2); color: var(--accent-cyan); }
.dropdown-menu a .dd-icon.green { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.dropdown-menu a .dd-icon.orange { background: rgba(249, 115, 22, 0.2); color: #fb923c; }

/* Header right side */
.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.header-phone svg {
  width: 18px;
  height: 18px;
  fill: var(--accent-cyan);
  flex-shrink: 0;
}

.btn-get-started {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 22px;
  background: var(--gradient-main);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.25);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  user-select: none;
  flex-shrink: 0;
}

.lang-switch .lang-option {
  color: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: color 0.3s;
  padding: 2px 4px;
  border-radius: 4px;
  line-height: 1;
}

.lang-switch .lang-option:hover {
  color: rgba(255, 255, 255, 0.7);
}

.lang-switch .lang-option.active {
  background: var(--gradient-main);
  color: #fff;
  -webkit-background-clip: text;
  background-clip: text;
  position: relative;
}

.lang-switch .lang-option.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 1px;
}

.lang-switch .lang-divider {
  color: rgba(255, 255, 255, 0.2);
  font-weight: 400;
  font-size: 12px;
}

.btn-get-started:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.4);
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ========================================
   HERO / BANNER
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgb(10 14 26 / 96%) 0%, rgb(10 14 26 / 55%) 40%, rgb(10 14 26 / 77%) 70%, rgb(10 14 26) 100%)
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 1200px;
  padding: 60px 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 14px;
  color: var(--accent-cyan);
  margin-bottom: 30px;
  backdrop-filter: blur(10px);
}

.hero-badge .badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero h1 .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
  border-radius: 8px;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 17px;
  border-radius: 14px;
}

/* ========================================
   ADVANTAGE BAR (Core Advantages Strip)
   ======================================== */
.advantage-strip {
  position: relative;
  z-index: 2;
  margin-top: -60px;
  padding: 0 40px;
  margin-bottom: 80px;
}

.advantage-strip .container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.advantage-card {
  background: rgba(20, 26, 54, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 28px 22px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity 0.3s;
}

.advantage-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.15);
}

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

.advantage-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.advantage-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--accent-blue); }
.advantage-icon.purple { background: rgba(124, 58, 237, 0.15); color: var(--accent-purple); }
.advantage-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.advantage-icon.green { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.advantage-icon.orange { background: rgba(249, 115, 22, 0.15); color: #fb923c; }

.advantage-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.advantage-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--dark-bg-2);
}

.section-darker {
  background: var(--dark-bg);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px;
}

.section-header .label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 20px;
}

.section-header h2 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-header h2 .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   FEATURE GRID
   ======================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.feature-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.feature-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 36px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-4px);
  background: var(--glass-bg-hover);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-card .card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.feature-card .card-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--accent-blue); }
.feature-card .card-icon.purple { background: rgba(124, 58, 237, 0.15); color: var(--accent-purple); }
.feature-card .card-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.feature-card .card-icon.green { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.feature-card .card-icon.orange { background: rgba(249, 115, 22, 0.15); color: #fb923c; }

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ========================================
   STATS SECTION
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: all 0.3s;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ========================================
   DUAL COLUMN LAYOUT
   ======================================== */
.dual-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.dual-column.reverse {
  direction: rtl;
}

.dual-column.reverse > * {
  direction: ltr;
}

.dual-column .text-content h2 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.dual-column .text-content h2 .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dual-column .text-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.dual-column .visual-content {
  position: relative;
}

.glass-panel {
  background: rgba(20, 26, 54, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(37, 99, 235, 0.08), transparent 50%),
              radial-gradient(circle at 70% 70%, rgba(124, 58, 237, 0.08), transparent 50%);
  pointer-events: none;
}

/* ========================================
   PROCESS / STEPS
   ======================================== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple), var(--primary-cyan));
  opacity: 0.3;
}

.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--dark-bg-2);
  border: 2px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.step-number::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  padding: 2px;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.step-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   PARTNER LOGOS
   ======================================== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.partner-logo-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}

.partner-logo-card:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-2px);
}

.partner-logo-card span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ========================================
   TIMELINE
   ======================================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-blue), var(--primary-purple), var(--primary-cyan));
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient-main);
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
}

.timeline-item h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-item .year {
  font-size: 14px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   CERTIFICATION BADGES
   ======================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cert-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.cert-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: rgba(37, 99, 235, 0.1);
}

.cert-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.cert-card p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
  position: relative;
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--dark-bg);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
}

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

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

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand .logo img {
    height: 25px !important;
    width: auto !important;
    display: block;
    object-fit: contain; /* 不变形 */
}

.footer-brand .logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-main);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 900;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-col h5 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px 0;
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--gradient-main);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.5);
}

/* ========================================
   SUB NAV (Lowcode page sections)
   ======================================== */
.sub-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 100;
  background: rgba(15, 20, 41, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0;
}

.sub-nav .container {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.sub-nav .container::-webkit-scrollbar {
  display: none;
}

.sub-nav a {
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}

.sub-nav a:hover,
.sub-nav a.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-blue);
}

/* ========================================
   HIGHLIGHT BOX
   ======================================== */
.highlight-box {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

.highlight-box .big-number {
  font-size: 56px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-box .big-label {
  font-size: 16px;
  color: var(--text-primary);
  font-weight: 600;
  margin-top: 4px;
}

.highlight-box .big-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ========================================
   SCENARIO TABS (Lowcode page)
   ======================================== */
.tab-container {
  display: flex;
  gap: 24px;
}

.tab-list {
  flex-shrink: 0;
  width: 280px;
}

.tab-item {
  padding: 20px 24px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s;
  margin-bottom: 8px;
  border: 1px solid transparent;
}

.tab-item:hover {
  background: var(--glass-bg);
}

.tab-item.active {
  background: var(--glass-bg);
  border-color: rgba(37, 99, 235, 0.3);
}

.tab-item h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.tab-item p {
  font-size: 13px;
  color: var(--text-muted);
}

.tab-content {
  flex: 1;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 40px;
  min-height: 400px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Glow effects */
.glow-blue {
  box-shadow: 0 0 30px rgba(37, 99, 235, 0.15);
}

.glow-purple {
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.15);
}

.glow-cyan {
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.15);
}

/* Floating particles animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1200px) {
  .advantage-strip .container {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (max-width: 1024px) {
  .hero h1 {
    font-size: 48px;
  }
  
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dual-column {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps::before {
    display: none;
  }
  
  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .header {
    overflow: visible;
  }

  .header .container {
    overflow: visible;
    gap: 0;
  }

  .header-logo {
    margin-right: auto;
  }

	.header-logo img {
    height: 20px !important;
    width: auto !important;
    }
	
  .nav {
    display: none;
  }
  .footer-brand .logo img {
    height: 20px !important;
    width: auto !important;
    display: block;
    object-fit: contain;
}
  .header-right {
    order: 3;
    margin-right: 0;
    margin-left: auto;
    gap: 0;
  }

  .header-phone {
    gap: 5px;
    margin-right: 8px;
  }

  .header-phone span {
    display: inline;
    font-size: 12px;
  }

  .header-phone svg {
    width: 16px;
    height: 16px;
  }
  
  .btn-get-started {
    display: none;
  }

  .lang-switch {
    order: 3;
    font-size: 12px;
    gap: 2px;
  }

  .lang-switch .lang-option {
    padding: 2px 3px;
  }
  
  .mobile-toggle {
    display: flex;
    order: 4;
  }
  
  .nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 1000;
  }
  
  .nav.mobile-open .nav-item {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 10px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .nav.mobile-open .nav-item.has-dropdown {
    flex-direction: column;
    align-items: stretch;
  }

  .nav.mobile-open .dd-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  
  .nav.mobile-open .nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
  }
  
  .nav.mobile-open .has-dropdown .dropdown-menu,
  .nav.mobile-open .has-dropdown:hover .dropdown-menu,
  .nav.mobile-open .has-dropdown.mobile-sub-open .dropdown-menu {
    position: relative;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    left: auto;
    min-width: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 6px 0;
    margin-top: 8px;
    box-shadow: none;
    transition: none !important;
    display: none;
  }
  
  .nav.mobile-open .has-dropdown.mobile-sub-open .dropdown-menu {
    display: flex !important;
    flex-direction: column;
    gap: 2px;
  }
  
  .nav.mobile-open .dropdown-menu a,
  .nav.mobile-open .has-dropdown:hover .dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85) !important;
    white-space: nowrap;
    border-radius: 6px;
    text-decoration: none;
  }
  
  .nav.mobile-open .dropdown-menu a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
  }
  
  .nav.mobile-open .dropdown-menu a .dd-icon {
    width: 28px;
    height: 28px;
    font-size: 13px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  
  .nav.mobile-open .has-dropdown.mobile-sub-open .dropdown-arrow {
    transform: rotate(180deg);
  }
  
  .mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .advantage-strip .container {
    grid-template-columns: 1fr;
  }
  
  .feature-grid,
  .feature-grid.cols-2,
  .feature-grid.cols-4 {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .cert-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header h2 {
    font-size: 32px;
  }
  
  .tab-container {
    flex-direction: column;
  }
  
  .tab-list {
    width: 100%;
    display: flex;
    overflow-x: auto;
    gap: 8px;
  }
  
  .tab-item {
    flex-shrink: 0;
    margin-bottom: 0;
  }
}

/* ========================================
   PAGE-SPECIFIC: LOWCODE SUB-SECTION HEROES
   ======================================== */
.page-hero {
  padding-top: 120px;
  padding-bottom: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.15), transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* Architecture diagram placeholder */
.arch-diagram {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  position: relative;
}

.arch-layer {
  background: var(--dark-bg-2);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  text-align: center;
  transition: all 0.3s;
}

.arch-layer:hover {
  border-color: rgba(37, 99, 235, 0.3);
  background: rgba(20, 26, 54, 0.8);
}

.arch-layer h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.arch-layer .arch-tags {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.arch-tag {
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.arch-tag.blue { background: rgba(37, 99, 235, 0.15); color: var(--accent-blue); }
.arch-tag.purple { background: rgba(124, 58, 237, 0.15); color: var(--accent-purple); }
.arch-tag.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.arch-tag.green { background: rgba(34, 197, 94, 0.15); color: #4ade80; }

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

.tier-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 36px 28px;
  transition: all 0.3s;
  position: relative;
}

.tier-card.featured {
  border-color: rgba(37, 99, 235, 0.4);
  background: rgba(37, 99, 235, 0.05);
}

.tier-card.featured::before {
  content: 'RECOMMENDED';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--gradient-main);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
}

.tier-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
}

.tier-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tier-card .tier-price {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.tier-card ul {
  margin-bottom: 24px;
}

.tier-card li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tier-card li::before {
  content: '✓';
  color: var(--accent-cyan);
  font-weight: 700;
  flex-shrink: 0;
}

/* Comparison table */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 24px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--glass-border);
}

.comparison-table th {
  background: var(--dark-bg-2);
  font-weight: 700;
  color: var(--text-primary);
  font-size: 14px;
}

.comparison-table td {
  color: var(--text-secondary);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

/* Icon helpers */
.icon-svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Contact Info Cards */
.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.contact-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.contact-icon svg {
  width: 28px;
  height: 28px;
}

.contact-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.contact-primary {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

@media (max-width: 768px) {
  .contact-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
.tier-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
  }
}