/* ===== CSS VARIABLES ===== */
:root {
  --primary: #0057FF;
  --primary-dark: #003FCC;
  --primary-light: #3D7FFF;
  --accent: #00C2FF;
  --dark: #0A0E1A;
  --dark-2: #111827;
  --dark-3: #1F2937;
  --gray: #6B7280;
  --gray-light: #9CA3AF;
  --border: #E5E7EB;
  --bg-light: #F8FAFC;
  --white: #FFFFFF;
  --text: #1F2937;
  --text-light: #6B7280;
  --font-zh: 'Noto Sans TC', sans-serif;
  --font-en: 'Inter', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-zh);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

/* ===== LAYOUT ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 80px 0; }
.bg-dark { background: var(--dark); color: var(--white); }
.bg-light { background: var(--bg-light); }

/* ===== SECTION HEADER ===== */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { margin: 12px 0 16px; }
.section-header p { color: var(--text-light); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
.section-header.light h2 { color: var(--white); }
.section-header.light p { color: rgba(255,255,255,0.7); }
.section-tag {
  display: inline-block;
  background: rgba(0,87,255,0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.bg-dark .section-tag { background: rgba(0,194,255,0.15); color: var(--accent); }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,87,255,0.3); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--primary);
  transition: var(--transition);
}
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid rgba(255,255,255,0.5);
  transition: var(--transition);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10,14,26,0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.logo-img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; }
.logo-text { display: flex; flex-direction: column; }
.logo-zh { font-size: 1rem; font-weight: 700; color: var(--white); line-height: 1.2; }
.logo-en { font-size: 0.7rem; color: rgba(255,255,255,0.6); font-family: var(--font-en); }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a {
  color: rgba(255,255,255,0.8);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--white); background: rgba(255,255,255,0.1); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang-toggle {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}
.lang-toggle:hover { background: rgba(255,255,255,0.2); }
.nav-cta { padding: 10px 22px; font-size: 0.9rem; }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,14,26,0.85) 0%, rgba(0,57,160,0.6) 50%, rgba(10,14,26,0.7) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  max-width: 720px;
  padding-left: 48px;
}
.hero-badge {
  display: inline-block;
  background: rgba(0,194,255,0.15);
  border: 1px solid rgba(0,194,255,0.3);
  color: var(--accent);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-title {
  color: var(--white);
  margin-bottom: 24px;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.2;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--accent), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 560px;
  line-height: 1.8;
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
}
.stat-item { display: flex; flex-direction: column; }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--accent); font-family: var(--font-en); line-height: 1; }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
}
.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg);
  animation: scrollBounce 1.5s infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 12px; color: var(--text); }
.feature-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }

/* ===== HOW IT WORKS ===== */
.steps-grid {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}
.step-card {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
}
.step-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.step-num {
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-en);
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}
.step-card h3 { color: var(--white); margin-bottom: 12px; }
.step-card p { color: rgba(255,255,255,0.65); font-size: 0.95rem; line-height: 1.7; }
.step-arrow {
  font-size: 2rem;
  color: rgba(255,255,255,0.3);
  padding-top: 60px;
  flex-shrink: 0;
}

/* ===== PRODUCT SHOWCASE ===== */
.showcase-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.showcase-img img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
}
.showcase-content .section-tag { margin-bottom: 16px; }
.showcase-content h2 { margin-bottom: 20px; }
.showcase-content p { color: var(--text-light); margin-bottom: 24px; line-height: 1.8; }
.showcase-list { margin-bottom: 32px; }
.showcase-list li {
  padding: 8px 0;
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
}
.showcase-list li:last-child { border-bottom: none; }

/* ===== MARKETS ===== */
.markets-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.market-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.market-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.market-flag { font-size: 3rem; margin-bottom: 16px; }
.market-card h3 { margin-bottom: 10px; }
.market-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }

/* ===== PRICING TEASER ===== */
.pricing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card.featured { border-color: var(--primary); }
.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  padding: 4px 20px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
}
.pricing-icon { font-size: 2.5rem; margin-bottom: 16px; }
.pricing-card h3 { margin-bottom: 16px; font-size: 1.3rem; }
.pricing-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; margin-bottom: 28px; }

/* ===== CTA SECTION ===== */
.cta-inner { text-align: center; max-width: 600px; margin: 0 auto; }
.cta-inner h2 { color: var(--white); margin-bottom: 16px; }
.cta-inner p { color: rgba(255,255,255,0.7); margin-bottom: 36px; font-size: 1.05rem; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer { background: var(--dark-2); color: var(--white); padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.7; margin-top: 16px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.logo-img-sm { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.footer-logo-zh { font-size: 0.95rem; font-weight: 700; }
.footer-logo-en { font-size: 0.7rem; color: rgba(255,255,255,0.5); font-family: var(--font-en); }
.footer-links h4, .footer-contact h4 { color: var(--white); margin-bottom: 20px; font-size: 0.95rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-bottom: 10px; line-height: 1.6; }
.footer-contact a { color: rgba(255,255,255,0.6); }
.footer-contact a:hover { color: var(--accent); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 140px 0 80px;
  text-align: center;
  color: var(--white);
}
.page-hero h1 { margin-bottom: 16px; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 560px; margin: 0 auto; }

/* ===== ABOUT PAGE ===== */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-intro img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.about-intro-content h2 { margin-bottom: 20px; }
.about-intro-content p { color: var(--text-light); line-height: 1.8; margin-bottom: 16px; }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.value-card { text-align: center; padding: 32px 24px; background: var(--bg-light); border-radius: var(--radius-lg); }
.value-icon { font-size: 2.5rem; margin-bottom: 16px; }
.value-card h3 { margin-bottom: 10px; }
.value-card p { color: var(--text-light); font-size: 0.9rem; }

/* ===== PRODUCTS PAGE ===== */
.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card-icon { font-size: 2.5rem; margin-bottom: 16px; }
.product-card h3 { margin-bottom: 12px; }
.product-card p { color: var(--text-light); line-height: 1.7; margin-bottom: 20px; }
.product-specs { background: var(--bg-light); border-radius: var(--radius); padding: 16px; }
.product-specs table { width: 100%; font-size: 0.88rem; }
.product-specs td { padding: 6px 0; color: var(--text-light); }
.product-specs td:first-child { color: var(--text); font-weight: 500; width: 45%; }

/* ===== PRICING PAGE ===== */
.pricing-full-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pricing-full-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
  transition: var(--transition);
}
.pricing-full-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-full-card.featured { border-color: var(--primary); }
.pricing-full-card .badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: var(--white);
  padding: 4px 20px; border-radius: 100px; font-size: 0.8rem; font-weight: 700;
}
.pricing-full-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.pricing-full-card .price { font-size: 2rem; font-weight: 800; color: var(--primary); margin: 16px 0; font-family: var(--font-en); }
.pricing-full-card .price span { font-size: 1rem; font-weight: 400; color: var(--text-light); }
.pricing-full-card .desc { color: var(--text-light); font-size: 0.9rem; margin-bottom: 24px; }
.pricing-features { margin-bottom: 32px; }
.pricing-features li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; color: var(--text); }
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li::before { content: '✓ '; color: var(--primary); font-weight: 700; }

/* ===== CONTACT PAGE ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; }
.contact-info h2 { margin-bottom: 20px; }
.contact-info p { color: var(--text-light); line-height: 1.8; margin-bottom: 32px; }
.contact-detail { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-item-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.contact-item-text h4 { margin-bottom: 4px; font-size: 0.95rem; }
.contact-item-text p, .contact-item-text a { color: var(--text-light); font-size: 0.9rem; }
.contact-item-text a:hover { color: var(--primary); }
.contact-form { background: var(--bg-light); border-radius: var(--radius-lg); padding: 40px; }
.contact-form h3 { margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 8px; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,87,255,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== LEGAL PAGES ===== */
.legal-content { max-width: 800px; margin: 0 auto; }
.legal-content h2 { margin: 40px 0 16px; font-size: 1.3rem; }
.legal-content h3 { margin: 28px 0 12px; font-size: 1.1rem; }
.legal-content p { color: var(--text-light); line-height: 1.8; margin-bottom: 16px; }
.legal-content ul { padding-left: 24px; margin-bottom: 16px; }
.legal-content li { color: var(--text-light); line-height: 1.8; margin-bottom: 8px; list-style: disc; }
.legal-date { color: var(--text-light); font-size: 0.9rem; margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .markets-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pricing-full-grid { grid-template-columns: 1fr 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section-pad { padding: 56px 0; }
  .nav-links { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--dark); flex-direction: column; justify-content: center; align-items: center; gap: 8px; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.2rem; padding: 12px 24px; }
  .hamburger { display: flex; z-index: 1001; }
  .hero-content { padding: 100px 24px 60px; }
  .hero-stats { gap: 24px; }
  .stat-num { font-size: 1.4rem; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); padding-top: 0; align-self: center; }
  .showcase-inner { grid-template-columns: 1fr; }
  .markets-grid { grid-template-columns: 1fr 1fr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .pricing-full-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .about-values { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .cta-btns { flex-direction: column; align-items: center; }
}

/* ===== 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-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }