/* ===== 筋斗云加速器 - Main Styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Orbitron:wght@700;900&display=swap');

:root {
  --primary: #FF6B00;
  --primary-light: #FF8C35;
  --primary-dark: #CC5500;
  --secondary: #FFD700;
  --accent: #FF3A3A;
  --bg-dark: #0A0E1A;
  --bg-card: #111827;
  --bg-card2: #161D2E;
  --text-primary: #FFFFFF;
  --text-secondary: #A0AEC0;
  --text-muted: #718096;
  --border: rgba(255,107,0,0.2);
  --glow: 0 0 30px rgba(255,107,0,0.3);
  --glow-strong: 0 0 60px rgba(255,107,0,0.5);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Noto Sans SC', sans-serif;
  --font-display: 'Orbitron', sans-serif;
}

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

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

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

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== BACKGROUND PARTICLES ===== */
#particles-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 5%;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-primary) !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700 !important;
  box-shadow: 0 4px 15px rgba(255,107,0,0.35);
  transition: var(--transition) !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255,107,0,0.5) !important;
}

.nav-cta::after { display: none !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 5% 80px;
  overflow: hidden;
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,107,0,0.12) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 60%, rgba(255,215,0,0.06) 0%, transparent 60%),
              var(--bg-dark);
}

.hero-cloud {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.cloud-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  animation: pulse-ring 4s ease-in-out infinite;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.cloud-ring:nth-child(1) {
  width: 300px; height: 300px;
  border-color: rgba(255,107,0,0.15);
  animation-delay: 0s;
}
.cloud-ring:nth-child(2) {
  width: 500px; height: 500px;
  border-color: rgba(255,107,0,0.1);
  animation-delay: 0.8s;
}
.cloud-ring:nth-child(3) {
  width: 700px; height: 700px;
  border-color: rgba(255,107,0,0.06);
  animation-delay: 1.6s;
}
.cloud-ring:nth-child(4) {
  width: 900px; height: 900px;
  border-color: rgba(255,107,0,0.03);
  animation-delay: 2.4s;
}

@keyframes pulse-ring {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,0,0.15);
  border: 1px solid rgba(255,107,0,0.3);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.hero-title .brand {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-weight: 400;
  line-height: 1.5;
}

.hero-subtitle strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

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

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(255,107,0,0.4);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(255,107,0,0.55);
}

.btn-primary:hover::before { left: 100%; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--text-primary);
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255,107,0,0.05);
}

/* ===== SECTIONS COMMON ===== */
section {
  position: relative;
  z-index: 1;
  padding: 100px 5%;
}

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

.section-tag {
  display: inline-block;
  background: rgba(255,107,0,0.12);
  border: 1px solid rgba(255,107,0,0.25);
  color: var(--primary-light);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-title span {
  color: var(--primary);
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FEATURES SECTION ===== */
#features { background: var(--bg-dark); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,107,0,0.4);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4), var(--glow);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 56px; height: 56px;
  background: rgba(255,107,0,0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  border: 1px solid rgba(255,107,0,0.2);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ===== DOWNLOAD SECTION ===== */
#download {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card2) 50%, var(--bg-dark) 100%);
}

.download-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.tab-btn:hover,
.tab-btn.active {
  background: rgba(255,107,0,0.1);
  border-color: var(--primary);
  color: var(--primary);
}

.tab-btn i { font-size: 1rem; }

.download-panels { max-width: 900px; margin: 0 auto; }

.download-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  align-items: center;
  gap: 48px;
}

.download-visual {
  flex-shrink: 0;
  width: 140px; height: 140px;
  background: rgba(255,107,0,0.08);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  border: 1px solid rgba(255,107,0,0.2);
}

.download-info h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.download-info .version-tag {
  display: inline-block;
  background: rgba(255,107,0,0.12);
  color: var(--primary-light);
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 16px;
  font-weight: 600;
}

.download-info p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 24px;
}

.download-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.dl-feature {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.dl-feature i { color: var(--primary); font-size: 0.75rem; }

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 6px 25px rgba(255,107,0,0.35);
  transition: var(--transition);
  font-family: var(--font-main);
  position: relative;
  overflow: hidden;
}

.btn-download::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 35px rgba(255,107,0,0.5);
}

.btn-download:hover::before { left: 100%; }

/* ===== PLANS SECTION ===== */
#plans { background: var(--bg-dark); }

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.plan-card.popular {
  border-color: var(--primary);
  background: linear-gradient(180deg, rgba(255,107,0,0.08) 0%, var(--bg-card) 100%);
  box-shadow: var(--glow);
  transform: scale(1.04);
}

.popular-badge {
  position: absolute;
  top: 0; right: 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 6px 20px;
  border-radius: 0 var(--radius) 0 var(--radius-sm);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.plan-duration {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.plan-price {
  margin-bottom: 8px;
}

.plan-price .currency {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  vertical-align: super;
}

.plan-price .amount {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.plan-price .period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-total {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.plan-total del { color: rgba(160,174,192,0.5); }

.plan-divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  text-align: left;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  padding: 6px 0;
}

.plan-features li i {
  color: var(--primary);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.btn-plan {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  font-family: var(--font-main);
  transition: var(--transition);
  text-decoration: none;
}

.plan-card:not(.popular) .btn-plan {
  background: rgba(255,107,0,0.1);
  color: var(--primary);
  border: 1px solid rgba(255,107,0,0.3);
}

.plan-card:not(.popular) .btn-plan:hover {
  background: rgba(255,107,0,0.2);
  transform: translateY(-2px);
}

.plan-card.popular .btn-plan {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 6px 20px rgba(255,107,0,0.4);
}

.plan-card.popular .btn-plan:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255,107,0,0.55);
}

/* ===== TESTIMONIALS ===== */
#testimonials {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card2) 100%);
}

.swiper-testimonials {
  padding-bottom: 60px !important;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  height: auto;
}

.stars {
  color: var(--secondary);
  font-size: 0.85rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-card blockquote {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,107,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}

.author-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.author-location {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.swiper-pagination-bullet {
  background: var(--text-muted) !important;
  opacity: 1 !important;
}

.swiper-pagination-bullet-active {
  background: var(--primary) !important;
  width: 24px !important;
  border-radius: 4px !important;
}

/* ===== GLOBAL NODES ===== */
#nodes { background: var(--bg-dark); }

.nodes-map {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}

.nodes-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.node-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,107,0,0.06);
  border: 1px solid rgba(255,107,0,0.15);
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  transition: var(--transition);
  cursor: default;
}

.node-item:hover {
  background: rgba(255,107,0,0.12);
  border-color: rgba(255,107,0,0.3);
  transform: translateY(-2px);
}

.node-flag { font-size: 1.5rem; }

.node-info { text-align: left; }

.node-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.node-status {
  font-size: 0.75rem;
  color: #4ADE80;
  display: flex;
  align-items: center;
  gap: 4px;
}

.node-status::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  background: #4ADE80;
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

.nodes-note {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== FAQ SECTION ===== */
#faq {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card2) 100%);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(255,107,0,0.3); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-main);
  transition: var(--transition);
}

.faq-question:hover { color: var(--primary); }

.faq-question i {
  flex-shrink: 0;
  color: var(--primary);
  transition: transform 0.3s ease;
  font-size: 0.8rem;
}

.faq-item.open .faq-question i { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer { max-height: 300px; }

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===== FOOTER ===== */
footer {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  padding: 60px 5% 30px;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand .logo { margin-bottom: 16px; }

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

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

.social-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.85rem;
}

.social-btn:hover {
  background: rgba(255,107,0,0.1);
  border-color: var(--primary);
  color: var(--primary);
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-sites {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-sites span {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.site-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  transition: var(--transition);
}

.site-badge:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px; left: 0; right: 0;
  background: rgba(10,14,26,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 24px 5%;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}

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

.mobile-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}

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

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== NOTICE BANNER ===== */
.notice-banner {
  background: linear-gradient(135deg, rgba(255,107,0,0.15), rgba(255,215,0,0.08));
  border-bottom: 1px solid rgba(255,107,0,0.2);
  padding: 10px 5%;
  text-align: center;
  font-size: 0.85rem;
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  z-index: 999;
}

.notice-banner i { font-size: 0.85rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .download-card { flex-direction: column; gap: 24px; }
  .download-card .download-visual { width: 100px; height: 100px; font-size: 3rem; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 32px; }
  .plan-card.popular { transform: scale(1); }
}

@media (max-width: 600px) {
  section { padding: 70px 5%; }
  .hero { padding: 100px 5% 60px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .download-tabs { gap: 6px; }
  .tab-btn { padding: 10px 16px; font-size: 0.82rem; }
  .download-card { padding: 28px 24px; }
  .plans-grid { grid-template-columns: 1fr; }
  .nodes-grid { gap: 8px; }
  .node-item { padding: 8px 14px; }
}