:root {
  --bg-main: #060814;
  --bg-surface: #0b1126;
  --bg-card: #111b38;
  --text-main: #f0f4ff;
  --text-muted: #8e9bb8;
  --neon-cyan: #00f0ff;
  --neon-purple: #9d4edd;
  --neon-green: #00ff87;
  --neon-pink: #ff007f;
  --border-glow: rgba(0, 240, 255, 0.25);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --container-w: 1240px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(157, 78, 221, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 90% 60%, rgba(0, 240, 255, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(0, 255, 135, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
}
a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}
ul {
  list-style: none;
}
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 8, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-container img {
  height: 38px;
  width: auto;
  object-fit: contain;
}
.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-links li a {
  padding: 8px 14px;
  font-size: 0.92rem;
  color: var(--text-muted);
  border-radius: 6px;
  display: inline-block;
}
.nav-links li a:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--neon-cyan);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}
.btn-neon {
  background: linear-gradient(135deg, var(--neon-cyan), #0077fe);
  color: #030a1a;
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
}
.btn-neon:hover {
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.7);
  transform: translateY(-2px);
}
.btn-outline {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.05);
}
.btn-outline:hover {
  background: rgba(0, 240, 255, 0.15);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
}
.btn-purple {
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
  color: #fff;
  box-shadow: 0 0 16px rgba(157, 78, 221, 0.4);
}
.btn-purple:hover {
  box-shadow: 0 0 24px rgba(255, 0, 127, 0.6);
  transform: translateY(-2px);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Sections */
section {
  padding: 80px 0;
  position: relative;
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px auto;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 50px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Hero Section (No Image strictly) */
.hero-section {
  padding: 100px 0 80px 0;
  text-align: center;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(157, 78, 221, 0.15);
  border: 1px solid rgba(157, 78, 221, 0.4);
  border-radius: 30px;
  color: #e0aaff;
  font-size: 0.88rem;
  margin-bottom: 24px;
  box-shadow: 0 0 15px rgba(157, 78, 221, 0.2);
}
.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  color: #ffffff;
  text-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}
.hero-subtitle {
  max-width: 820px;
  margin: 0 auto 36px auto;
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.stat-card {
  background: rgba(17, 27, 56, 0.7);
  border: 1px solid var(--border-glow);
  padding: 24px 16px;
  border-radius: 12px;
  box-shadow: inset 0 0 20px rgba(0, 240, 255, 0.05);
  transition: transform 0.3s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-cyan);
}
.stat-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--neon-cyan);
  margin-bottom: 6px;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Grid & Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.12);
  transform: translateY(-3px);
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 240, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  font-size: 1.4rem;
  margin-bottom: 18px;
  border: 1px solid rgba(0, 240, 255, 0.2);
}
.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}
.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Platform tags */
.platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 30px;
}
.platform-badge {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: #cfd9ed;
  transition: all 0.2s ease;
}
.platform-badge:hover {
  border-color: var(--neon-green);
  color: var(--neon-green);
  background: rgba(0, 255, 135, 0.05);
}

/* Comparison Table */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  background: var(--bg-card);
}
table.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}
table.custom-table th, table.custom-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
table.custom-table th {
  background: rgba(0, 240, 255, 0.08);
  color: #ffffff;
  font-weight: 700;
}
table.custom-table tr.highlight {
  background: rgba(0, 240, 255, 0.04);
}
table.custom-table td.brand-col {
  color: var(--neon-cyan);
  font-weight: 700;
}

/* Score Panel */
.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(90deg, rgba(255,0,127,0.15), rgba(157,78,221,0.15));
  border: 1px solid var(--neon-pink);
  padding: 12px 24px;
  border-radius: 12px;
  margin-bottom: 24px;
}
.score-val {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--neon-pink);
}

/* Process Timeline */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
  position: relative;
}
.step-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: rgba(0, 240, 255, 0.3);
  margin-bottom: 12px;
}

/* Media Showcase */
.media-box {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}
.media-box img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}
.media-box:hover img {
  transform: scale(1.03);
}
.media-content {
  padding: 18px;
}

/* FAQ Accordion */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  background: var(--bg-surface);
  overflow: hidden;
  transition: border-color 0.25s ease;
}
.faq-item:hover {
  border-color: var(--border-glow);
}
.faq-question {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: #ffffff;
  user-select: none;
}
.faq-icon {
  color: var(--neon-cyan);
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  padding: 0 24px 20px 24px;
  max-height: 200px;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

/* Form Styles */
.form-container {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 40px;
  border-radius: 16px;
  border: 1px solid var(--border-glow);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #ffffff;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(6, 8, 20, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: #ffffff;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.25s ease;
}
.form-control:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}
textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

/* Contact & Info */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}
.contact-qr-box {
  text-align: center;
  background: var(--bg-surface);
  padding: 30px;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
}
.contact-qr-box img {
  max-width: 170px;
  border-radius: 8px;
  margin-bottom: 12px;
  border: 2px solid var(--neon-cyan);
}

/* Articles List */
.article-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}
.article-btn {
  padding: 8px 16px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.88rem;
}
.article-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

/* Footer */
footer.site-footer {
  background: #03050d;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px 0;
  color: #7b88a8;
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-title {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #7b88a8;
}
.footer-links a:hover {
  color: var(--neon-cyan);
}
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}
.friend-links a {
  color: #7b88a8;
  font-size: 0.85rem;
}
.friend-links a:hover {
  color: var(--neon-green);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: #556282;
}

/* Floating Tools */
.floating-kefu {
  position: fixed;
  bottom: 30px;
  right: 25px;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
}
.float-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #060814;
    flex-direction: column;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-glow);
  }
  .nav-links.active { display: flex; }
  .nav-toggle { display: block; }
  .form-container { padding: 24px 16px; }
}