/* 
  Juziyun Premium Design System
  Theme: Dark & Orange (桔子)
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&family=Outfit:wght@400;700&display=swap');

:root {
  --bg: #0a0a0b;
  --surface: #161618;
  --surface-accent: #1f1f22;
  --primary: #ff5d22;
  --primary-hover: #ff7d4d;
  --text: #ffffff;
  --text-dim: #a0a0a5;
  --border: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
}

header {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 32px;
}

nav a {
  color: var(--text);
  text-decoration: none;
  margin-left: 30px;
  font-weight: 500;
  transition: var(--transition);
  font-size: 0.9rem;
}

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

.hero {
  padding: 180px 5% 100px;
  text-align: center;
  background: radial-gradient(circle at top, rgba(255, 93, 34, 0.15) 0%, transparent 50%);
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, #a0a0a5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-dim);
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 40px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  background-color: var(--primary);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
}

.btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 93, 34, 0.3);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border);
  margin-left: 15px;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.pricing-card:hover {
  border-color: var(--primary);
}

.pricing-card.recommended {
  border-color: var(--primary);
  transform: scale(1.02);
}

.pricing-card .plan-name {
  color: var(--text-dim);
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 15px;
}

.pricing-card .price {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
}

.pricing-card .price span {
  font-size: 1.5rem;
  margin-right: 5px;
}

.pricing-card .price .period {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-left: 5px;
}

.pricing-card ul {
  list-style: none;
  margin: 30px 0;
  flex-grow: 1;
}

.pricing-card li {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.pricing-card li::before {
  content: '✓';
  color: var(--primary);
  margin-right: 12px;
  font-weight: 900;
}

.pricing-card .buy-btn {
  padding: 15px;
  text-align: center;
  border: 2px solid var(--primary);
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pricing-card.recommended .buy-btn {
  background: var(--primary);
  color: white;
}

.pricing-card:hover .buy-btn {
  background: var(--primary);
  color: white;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin: 100px 0;
}

.feature-item h3 {
  margin-bottom: 10px;
  color: var(--primary);
}

.feature-item p {
  color: var(--text-dim);
}

/* Articles Section */
.articles-section {
  padding: 100px 0;
  background: rgba(255, 255, 255, 0.02);
}

.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.article-card {
  background: var(--surface);
  padding: 25px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.article-card:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
}

.article-card h4 {
  margin-bottom: 10px;
}

.article-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

footer {
  padding: 80px 5% 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}

footer .footer-links {
  margin-bottom: 30px;
}

footer a {
  color: var(--text-dim);
  text-decoration: none;
  margin: 0 15px;
  font-size: 0.9rem;
}

footer a:hover {
  color: var(--primary);
}

.geo-info {
  display: none; /* For SEO/Geotargeting tags presence only */
}

@media (max-width: 768px) {
  nav { display: none; }
  .hero h1 { font-size: 3rem; }
}