/* ==========================================================================
   龙猫云 (Longmaoyun.cfd) - 拓扑绝缘体与量子边界态视觉系统
   Topological Insulator Spec: #080B10, #F59E0B (Amber Gold), #06B6D4 (Electric Cyan)
   ========================================================================== */

:root {
  --bg-dark: #080b10;
  --bg-card: #0d121c;
  --bg-card-hover: #131b2a;
  --bg-insulate: #0a0e16;
  --border-cyan: #06b6d4;
  --border-amber: #f59e0b;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-highlight: #ffffff;
  --accent-cyan-glow: rgba(6, 182, 212, 0.4);
  --accent-amber-glow: rgba(245, 158, 11, 0.4);
  --gradient-spin: linear-gradient(135deg, #06b6d4 0%, #f59e0b 100%);
  --gradient-card: linear-gradient(180deg, rgba(13, 18, 28, 0.8) 0%, rgba(8, 11, 16, 0.95) 100%);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-quantum: 0 10px 30px -10px rgba(6, 182, 212, 0.15), 0 0 20px 0 rgba(245, 158, 11, 0.08);
}

/* 基础重置 & Cursor 尾翼初始化 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 40%),
    url("data:image/svg+xml,%3Csvg width='60' height='103.923' viewBox='0 0 60 103.923' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0 L60 17.32 L60 51.96 L30 69.28 L0 51.96 L0 17.32 Z M30 103.923 L60 86.602 L60 51.96 L30 69.28 L0 51.96 L0 86.602 Z' fill='none' stroke='rgba(6,182,212,0.03)' stroke-width='1'/%3E%3C/svg%3E");
  min-height: 100vh;
  position: relative;
}

/* 鼠标尾翼画布 */
#cursor-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
}

/* 布局类 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 拓扑卡片基质 (Insulator Card with Spin Momentum Flowing Border) */
.topo-card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 2rem;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.topo-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  padding: 1.5px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.6), transparent 40%, transparent 60%, rgba(245, 158, 11, 0.6));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.6;
  transition: opacity 0.4s ease;
}

.topo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-quantum);
}

.topo-card:hover::before {
  opacity: 1;
}

/* 按钮样式 - 自旋微光按钮 */
.btn-spin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  color: #ffffff;
  background: linear-gradient(135deg, #06b6d4 0%, #0284c7 50%, #f59e0b 100%);
  background-size: 200% 200%;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
  animation: spinGlow 4s infinite linear;
}

@keyframes spinGlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-spin:hover {
  transform: scale(1.04);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.7), 0 0 15px rgba(245, 158, 11, 0.5);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  color: var(--border-cyan);
  background: transparent;
  border: 1px solid var(--border-cyan);
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: rgba(6, 182, 212, 0.1);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
  color: #fff;
}

/* 导航栏 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 11, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(6, 182, 212, 0.15);
  padding: 1rem 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-highlight);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--border-cyan), var(--border-amber));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #080b10;
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.5);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

/* Hero 区域 */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
  text-align: center;
}

.badge-quantum {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--border-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
}

.badge-quantum span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-amber);
  box-shadow: 0 0 8px var(--border-amber);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  color: #ffffff;
  margin-bottom: 1.25rem;
  letter-spacing: -1px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #06b6d4 0%, #38bdf8 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-features-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-pill {
  background: rgba(13, 18, 28, 0.7);
  border: 1px solid rgba(6, 182, 212, 0.15);
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  text-align: left;
}

.feature-pill-icon {
  font-size: 1.4rem;
  color: var(--border-amber);
}

.feature-pill-text h4 {
  font-size: 0.95rem;
  color: #fff;
}

.feature-pill-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 节点延迟矩阵与拓扑能带图 */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.5rem;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1rem;
}

.node-matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.node-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  background: var(--bg-insulate);
  border: 1px solid rgba(6, 182, 212, 0.12);
  border-radius: var(--radius-sm);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

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

.node-name {
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
}

.node-spec {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.node-latency {
  text-align: right;
}

.latency-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #10b981;
  font-size: 1.1rem;
}

.latency-bar {
  width: 60px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.latency-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: 2px;
}

/* 价格套餐区 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
  margin-bottom: 5rem;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.price-card.popular::before {
  opacity: 1;
  background: linear-gradient(135deg, var(--border-cyan), var(--border-amber));
}

.badge-popular {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(135deg, var(--border-amber), #ea580c);
  color: #080b10;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  text-transform: uppercase;
}

.price-header {
  margin-bottom: 1.5rem;
}

.price-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--border-cyan);
  font-family: var(--font-mono);
}

.price-amount span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.price-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.price-features li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.price-features li i {
  color: #10b981;
}

/* 客户端一键订阅区 */
.client-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.6rem 1.4rem;
  background: rgba(13, 18, 28, 0.8);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--text-muted);
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.tab-btn.active, .tab-btn:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--border-cyan);
  color: #fff;
}

.client-content {
  display: none;
  background: var(--bg-insulate);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(6, 182, 212, 0.15);
}

.client-content.active {
  display: block;
}

.step-list {
  list-style: none;
  counter-reset: step-counter;
}

.step-list li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 3rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.step-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--border-cyan), var(--border-amber));
  color: #080b10;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
}

/* 80%+ 大白话用户评价区 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 5rem;
}

.review-card {
  background: var(--bg-insulate);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b, #334155);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--border-cyan);
}

.author-info h4 {
  color: #fff;
  font-size: 0.95rem;
}

.author-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.review-stars {
  color: var(--border-amber);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.review-text {
  color: var(--text-main);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* 常见问题 FAQ (Accordion) */
.faq-list {
  max-width: 860px;
  margin: 0 auto 5rem;
}

.faq-item {
  background: var(--bg-insulate);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-question i {
  color: var(--border-amber);
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.5rem 1.25rem;
  transition: max-height 0.3s ease-in-out;
}

/* SEO 文章精选网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-bottom: 5rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--border-cyan);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

.article-card h3 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.article-card h3 a:hover {
  color: var(--border-cyan);
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-link {
  color: var(--border-amber);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.article-link:hover {
  text-decoration: underline;
}

/* SEO 文章详情页专用样式 */
.article-detail-container {
  max-width: 860px;
  margin: 3rem auto 5rem;
  padding: 0 1.5rem;
}

.article-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid rgba(6, 182, 212, 0.2);
  padding-bottom: 2rem;
}

.article-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
  line-height: 1.25;
}

.article-body {
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.6rem;
  color: #fff;
  margin: 2rem 0 1rem;
  border-left: 4px solid var(--border-cyan);
  padding-left: 0.75rem;
}

.article-body h3 {
  font-size: 1.25rem;
  color: var(--border-amber);
  margin: 1.5rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(245, 158, 11, 0.1));
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  margin: 3rem 0;
}

.article-cta-box h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.article-cta-box p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   页脚 PBN 权重精准输血管道 (Footer Friend Links Network)
   ========================================================================== */
footer.pbn-footer {
  background: #05070a;
  border-top: 1px solid rgba(6, 182, 212, 0.15);
  padding: 3rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.pbn-link-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  background: rgba(10, 14, 22, 0.6);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.pbn-link-grid a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s ease;
  font-size: 0.8rem;
}

.pbn-link-grid a:hover {
  color: var(--border-cyan);
  text-decoration: underline;
}

.footer-copy {
  color: #475569;
  font-size: 0.78rem;
}

/* 响应式调整 (Mobile Responsive) */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .nav-links {
    display: none; /* 移动端导航精简 */
  }
  
  .topo-card {
    padding: 1.25rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

  .hero-ctas .btn-spin, .hero-ctas .btn-outline {
    width: 100%;
  }
}

/* ==========================================================================
   客户端下载弹窗 (Client Download Modal)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 11, 16, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1.5rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-card);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(6, 182, 212, 0.2);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem 2.2rem;
  position: relative;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: rgba(6, 182, 212, 0.2);
  color: var(--border-cyan);
  border-color: var(--border-cyan);
  transform: rotate(90deg);
}

.modal-header {
  text-align: center;
  margin-bottom: 1.75rem;
  padding-right: 1rem;
}

.modal-header h3 {
  font-size: 1.45rem;
  color: var(--text-highlight);
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-header p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.modal-download-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.btn-platform-download {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 1.25rem;
  background: rgba(13, 18, 28, 0.9);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-main);
  transition: all 0.25s ease;
}

.btn-platform-download:hover {
  border-color: var(--border-cyan);
  background: rgba(6, 182, 212, 0.12);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
  transform: translateY(-2px);
}

.btn-platform-download.btn-ios:hover {
  border-color: var(--border-amber);
  background: rgba(245, 158, 11, 0.12);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.btn-platform-download .platform-icon {
  font-size: 2rem;
  color: var(--border-cyan);
  width: 44px;
  height: 44px;
  background: rgba(6, 182, 212, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-platform-download.btn-ios .platform-icon {
  color: var(--border-amber);
  background: rgba(245, 158, 11, 0.1);
}

.btn-platform-download .platform-text {
  flex: 1;
}

.btn-platform-download .platform-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-highlight);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-platform-download .platform-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.btn-platform-download .platform-action-arrow {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: transform 0.2s ease;
}

.btn-platform-download:hover .platform-action-arrow {
  transform: translateX(4px);
  color: var(--text-highlight);
}

.modal-guide-box {
  background: rgba(10, 14, 22, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.modal-guide-box h4 {
  color: var(--border-cyan);
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.modal-guide-box ol {
  padding-left: 1.2rem;
  line-height: 1.6;
}