:root {
  --primary-color: #FF6B00;
  --secondary-color: #FF8E33;
  --dark-bg: #0A0F1E;
  --light-bg: #F5F7FA;
  --text-main: #1F2937;
  --text-muted: #6B7280;
  --white: #FFFFFF;
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.2);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-main);
  background: var(--light-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--glass-border);
}

nav {
  height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 48px;
}

.logo span {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a:hover {
  color: var(--primary-color);
}

.btn-primary {
  background: var(--primary-color);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 4px 14px 0 rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(255, 142, 51, 0.4);
}

/* Hero Section */
.hero {
  padding: 200px 0 160px;
  background: linear-gradient(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.5)), url('../img/hero-bg2-mini.jpg') no-repeat center center;
  background-size: cover;
  text-align: left;
  position: relative;
}

.hero h1 {
  font-size: 56px;
  font-weight: 900;
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero p {
  font-size: 20px;
  color: var(--text-main);
  max-width: 800px;
  margin-bottom: 40px;
  /* margin: 0 auto 40px; */
}

/* Sections General */
section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 36px;
  margin-bottom: 16px;
}

.section-title p {
  color: var(--text-muted);
}

/* Feature Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--white);
  padding: 30px 40px;
  border-radius: 24px;
  transition: var(--transition);
  border: 1px solid #EDEDF2;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
  border-color: var(--primary-color);
}

.card .badge {
  position: absolute;
  top: 20px;
  right: -30px;
  background: var(--primary-color);
  color: white;
  padding: 5px 40px;
  transform: rotate(45deg);
  font-size: 12px;
  font-weight: 700;
}

.card .icon{
  width: 48px;
  height: 48px;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center center;
}

.grid .card:nth-of-type(1) .icon{
  background-image: url('../img/ruzhu1.png');
}
.grid .card:nth-of-type(2) .icon{
  background-image: url('../img/ruzhu2.png');
}
.grid .card:nth-of-type(3) .icon{
  background-image: url('../img/ruzhu3.png');
}
.grid .card:nth-of-type(4) .icon{
  background-image: url('../img/ruzhu4.png');
}
.grid .card:nth-of-type(5) .icon{
  background-image: url('../img/ruzhu5.png');
}
.grid .card:nth-of-type(6) .icon{
  background-image: url('../img/ruzhu6.png');
}

/* Stats Section */
.stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-5px);
}

.stat-icon {
  margin-bottom: 20px;
  color: var(--primary-color);
  display: flex;
  justify-content: center;
  opacity: 0.9;
  transition: var(--transition);
}

.stat-item:hover .stat-icon {
  transform: scale(1.1);
  opacity: 1;
  color: var(--secondary-color);
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
}

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

/* Comparison Section */
.comparison {
  display: flex;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.comp-card {
  flex: 1;
  min-width: 280px;
  padding: 30px;
  background: #F8FAFC;
  border-radius: 20px;
  border: 1px dashed #CBD5E1;
}

.comp-card.active {
  background: #FFF7ED;
  border: 1px solid var(--primary-color);
  border-style: solid;
}

.comp-card h4 {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.comp-card ul li {
  margin-bottom: 10px;
  color: var(--text-muted);
  font-size: 14px;
}

/* Footer */
footer {
  background: var(--dark-bg);
  color: var(--white);
  padding: 80px 0 40px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-logo span {
  font-size: 24px;
  font-weight: 700;
}

.footer-info {
  margin-top: 20px;
  color: #ABB1BB;
}

.footer-bottom {
  border-top: 1px solid #1E2536;
  padding-top: 40px;
  text-align: center;
  color: #6B7280;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links, .nav-action { display: none; }
  .hero { padding: 140px 0 80px; }
  .hero h1 { font-size: 32px; }
  .footer-content { grid-template-columns: 1fr; }
}