/* ==========================================================================
   掌中世界机场网 (zzsj.click) - 官方极速纯原生样式表
   特性：秒开级轻量纯 CSS、GPU 硬件加速动态背景、同排并列价格看板、响应式视口适配
   ========================================================================== */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  /* 品牌核心配色 - 科技青蓝至幻紫渐变 */
  --color-bg-deep: #080c16;
  --color-bg-card: rgba(15, 23, 42, 0.75);
  --color-bg-card-hover: rgba(22, 34, 61, 0.85);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-glow: rgba(5, 255, 161, 0.4);
  
  --color-primary: #05ffa1;
  --color-primary-dark: #00d287;
  --color-secondary: #00f0b5;
  --color-purple: #9d4edd;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-danger: #ef4444;
  
  --color-text-main: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px rgba(5, 255, 161, 0.28);
  --shadow-glow-purple: 0 0 30px rgba(157, 78, 221, 0.3);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg-deep);
  color: var(--color-text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ==========================================================================
   动态科技流光背景 (纯 CSS 动画，GPU 优化，零 JS 负担，瞬间渲染)
   ========================================================================== */
.dynamic-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at 50% 20%, #0d152a 0%, #080c16 75%, #04060b 100%);
}

.aurora-sphere {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  will-change: transform;
}

.aurora-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #05ffa1 0%, rgba(5, 255, 161, 0.2) 70%, transparent 100%);
  top: -150px;
  left: 10%;
  animation: floatOrb1 18s ease-in-out infinite alternate;
}

.aurora-2 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, #9d4edd 0%, rgba(114, 9, 183, 0.2) 70%, transparent 100%);
  bottom: -200px;
  right: 5%;
  animation: floatOrb2 22s ease-in-out infinite alternate;
}

.aurora-3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #05ffa1 0%, rgba(5, 255, 161, 0.15) 70%, transparent 100%);
  top: 40%;
  right: 25%;
  animation: floatOrb3 15s ease-in-out infinite alternate;
}

/* 科技网格纹理流动层 */
.cyber-grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  animation: gridDrift 60s linear infinite;
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(80px, 60px, 0) scale(1.15); }
  100% { transform: translate3d(-60px, 120px, 0) scale(0.9); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-90px, -70px, 0) scale(1.1); }
  100% { transform: translate3d(70px, -110px, 0) scale(0.95); }
}

@keyframes floatOrb3 {
  0% { transform: translate3d(0, 0, 0) scale(0.95); }
  100% { transform: translate3d(-70px, -50px, 0) scale(1.2); }
}

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

/* ==========================================================================
   动态背景：各种各样时尚服装与潮服漂浮动效 (纯 CSS 硬件加速，零 JS 极速渲染)
   ========================================================================== */
.floating-clothes-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.cloth-item {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  pointer-events: none;
  will-change: transform, opacity;
  opacity: 0.26;
  filter: drop-shadow(0 0 10px rgba(5, 255, 161, 0.45)) drop-shadow(0 0 20px rgba(157, 78, 221, 0.3));
  transition: opacity 0.3s;
}

.cloth-item:hover {
  opacity: 0.6;
}

.cloth-item span {
  display: inline-block;
  line-height: 1;
}

/* 各种服装位置分布与专属动效 */
.cloth-1  { top: 8%;  left: 6%;  font-size: 46px; animation: floatCloth1 17s ease-in-out infinite alternate; }
.cloth-2  { top: 22%; left: 88%; font-size: 50px; animation: floatCloth2 23s ease-in-out infinite alternate; }
.cloth-3  { top: 40%; left: 14%; font-size: 54px; animation: floatCloth3 19s ease-in-out infinite alternate; }
.cloth-4  { top: 62%; left: 82%; font-size: 46px; animation: floatCloth4 25s ease-in-out infinite alternate; }
.cloth-5  { top: 82%; left: 24%; font-size: 48px; animation: floatCloth1 21s ease-in-out infinite alternate; }
.cloth-6  { top: 14%; left: 42%; font-size: 40px; animation: floatCloth2 18s ease-in-out infinite alternate; }
.cloth-7  { top: 76%; left: 56%; font-size: 52px; animation: floatCloth3 26s ease-in-out infinite alternate; }
.cloth-8  { top: 32%; left: 68%; font-size: 44px; animation: floatCloth4 20s ease-in-out infinite alternate; }
.cloth-9  { top: 6%;  left: 74%; font-size: 42px; animation: floatCloth1 16s ease-in-out infinite alternate; }
.cloth-10 { top: 56%; left: 4%;  font-size: 48px; animation: floatCloth2 24s ease-in-out infinite alternate; }
.cloth-11 { top: 86%; left: 90%; font-size: 45px; animation: floatCloth3 22s ease-in-out infinite alternate; }
.cloth-12 { top: 28%; left: 28%; font-size: 42px; animation: floatCloth4 19s ease-in-out infinite alternate; }
.cloth-13 { top: 48%; left: 93%; font-size: 38px; animation: floatCloth1 22s ease-in-out infinite alternate; }
.cloth-14 { top: 90%; left: 10%; font-size: 44px; animation: floatCloth2 27s ease-in-out infinite alternate; }
.cloth-15 { top: 4%;  left: 22%; font-size: 46px; animation: floatCloth3 18s ease-in-out infinite alternate; }
.cloth-16 { top: 68%; left: 36%; font-size: 42px; animation: floatCloth4 23s ease-in-out infinite alternate; }
.cloth-17 { top: 84%; left: 72%; font-size: 48px; animation: floatCloth1 20s ease-in-out infinite alternate; }
.cloth-18 { top: 20%; left: 56%; font-size: 40px; animation: floatCloth2 25s ease-in-out infinite alternate; }
.cloth-19 { top: 48%; left: 48%; font-size: 46px; animation: floatCloth3 21s ease-in-out infinite alternate; }
.cloth-20 { top: 36%; left: 3%;  font-size: 42px; animation: floatCloth4 28s ease-in-out infinite alternate; }

@keyframes floatCloth1 {
  0% { transform: translate3d(0, 0, 0) rotate(0deg) scale(0.95); }
  50% { transform: translate3d(40px, -50px, 0) rotate(14deg) scale(1.12); }
  100% { transform: translate3d(-35px, 40px, 0) rotate(-12deg) scale(0.95); }
}

@keyframes floatCloth2 {
  0% { transform: translate3d(0, 0, 0) rotate(0deg) scale(1); }
  50% { transform: translate3d(-45px, 45px, 0) rotate(-16deg) scale(1.15); }
  100% { transform: translate3d(30px, -35px, 0) rotate(10deg) scale(0.9); }
}

@keyframes floatCloth3 {
  0% { transform: translate3d(0, 0, 0) rotate(-10deg) scale(0.92); }
  50% { transform: translate3d(50px, 40px, 0) rotate(18deg) scale(1.18); }
  100% { transform: translate3d(-30px, -45px, 0) rotate(-6deg) scale(1); }
}

@keyframes floatCloth4 {
  0% { transform: translate3d(0, 0, 0) rotate(8deg) scale(1.05); }
  50% { transform: translate3d(-40px, -40px, 0) rotate(-15deg) scale(0.92); }
  100% { transform: translate3d(35px, 50px, 0) rotate(12deg) scale(1.12); }
}

/* ==========================================================================
   排版与全局容器
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, #05ffa1 0%, #00f5a0 45%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-gold {
  background: linear-gradient(135deg, #f59e0b 0%, #fcd34d 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.nowrap-phrase {
  white-space: nowrap;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #64ffc8;
}

/* ==========================================================================
   按钮组件 (严格遵守规范：包含 nofollow 与 target="_blank" 支持)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #05ffa1 0%, #00d290 100%);
  color: #041812 !important;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(5, 255, 161, 0.38);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(5, 255, 161, 0.58);
  background: linear-gradient(135deg, #64ffc8 0%, #05ffa1 100%);
}

.btn-glow {
  background: linear-gradient(135deg, #05ffa1 0%, #00d290 45%, #9333ea 100%);
  color: #ffffff !important;
  font-weight: 700;
  box-shadow: 0 0 25px rgba(5, 255, 161, 0.45);
}
.btn-glow:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 35px rgba(147, 51, 234, 0.65), 0 0 22px rgba(5, 255, 161, 0.75);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-main) !important;
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary) !important;
  border: 1px solid rgba(5, 255, 161, 0.4);
}
.btn-outline:hover {
  background: rgba(5, 255, 161, 0.1);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.85rem;
}
.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
}
.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   顶部导航栏 (Navbar)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 12, 22, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-logo img {
  height: 48px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   Hero 首屏视觉区
   ========================================================================== */
.hero {
  padding: 85px 0 60px;
  text-align: center;
  position: relative;
}

.badge-notice {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(5, 255, 161, 0.08);
  border: 1px solid rgba(5, 255, 161, 0.28);
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-desc {
  max-width: 780px;
  margin: 0 auto 36px;
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}
.stat-item {
  text-align: center;
}
.stat-num {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-mono);
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   通配区块 (Section)
   ========================================================================== */
.section {
  padding: 85px 0;
  position: relative;
}
.section-alt {
  background: rgba(11, 18, 33, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 1.02rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   核心特性卡片网格
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}
.feature-card:hover {
  transform: translateY(-5px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-glow);
}
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  background: rgba(5, 255, 161, 0.12);
  border: 1px solid rgba(5, 255, 161, 0.25);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}
.feature-text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   价格区域：所有价格严格同排横向排列 (所有价格要同排)
   ========================================================================== */
.pricing-wrapper {
  width: 100%;
  overflow-x: auto;
  padding: 20px 0 35px;
  scrollbar-width: thin;
  scrollbar-color: rgba(5, 255, 161, 0.4) rgba(255, 255, 255, 0.05);
  -webkit-overflow-scrolling: touch;
}
.pricing-wrapper::-webkit-scrollbar {
  height: 8px;
}
.pricing-wrapper::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}
.pricing-wrapper::-webkit-scrollbar-thumb {
  background: rgba(5, 255, 161, 0.4);
  border-radius: 4px;
}

/* 6个套餐横向同一行排布 - 关键：同排展示 */
.pricing-row-container {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: flex-start;
  gap: 16px;
  min-width: 1380px; /* 保证6张卡片并列同一排，不换行，大屏等宽 */
}

@media (min-width: 1600px) {
  .pricing-row-container {
    min-width: 100%;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
  }
}

.price-card {
  flex: 1 1 0;
  min-width: 215px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}
.price-card:hover {
  transform: translateY(-6px);
  border-color: rgba(5, 255, 161, 0.5);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.price-card.featured {
  background: linear-gradient(180deg, rgba(22, 38, 70, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 30px rgba(5, 255, 161, 0.28);
  transform: scale(1.02);
  z-index: 2;
}
.price-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.ribbon-tag {
  position: absolute;
  top: -12px;
  right: 14px;
  background: linear-gradient(135deg, #05ffa1 0%, #00d290 100%);
  color: #041812;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 2px 10px rgba(5, 255, 161, 0.5);
}

.price-plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.price-plan-en {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.price-box {
  margin: 14px 0 10px;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}
.price-amount {
  font-size: 2.3rem;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  line-height: 1;
}
.price-period {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-left: 4px;
}

.price-traffic-badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: #05ffa1;
  background: rgba(5, 255, 161, 0.12);
  border: 1px solid rgba(5, 255, 161, 0.28);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  margin-bottom: 18px;
}

.price-features {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: 0.86rem;
  color: var(--color-text-muted);
}
.price-features li {
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.45;
}
.price-features li svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  margin-top: 2px;
}

.pricing-note {
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-top: 15px;
}

/* ==========================================================================
   客户端生态支持区域
   ========================================================================== */
.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.client-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: all var(--transition-normal);
}
.client-item:hover {
  transform: translateY(-4px);
  border-color: rgba(5, 255, 161, 0.4);
}
.client-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: block;
}
.client-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}
.client-software {
  font-size: 0.82rem;
  color: var(--color-primary);
}

/* ==========================================================================
   节点覆盖与网络拓扑看板
   ========================================================================== */
.node-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.node-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-fast);
}
.node-card:hover {
  border-color: rgba(5, 255, 161, 0.35);
  background: rgba(22, 34, 61, 0.6);
}
.node-flag {
  font-size: 2rem;
  line-height: 1;
}
.node-info {
  flex: 1;
}
.node-region {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}
.node-meta {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 2px;
}
.node-ping {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-success);
  font-family: var(--font-mono);
}

/* ==========================================================================
   博客文章展示区域 (Articles Section)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}
.article-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  text-decoration: none;
}
.article-card:hover {
  transform: translateY(-5px);
  border-color: rgba(5, 255, 161, 0.4);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}
.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(5, 255, 161, 0.12);
  border: 1px solid rgba(5, 255, 161, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 12px;
  align-self: flex-start;
}
.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 10px;
}
.article-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}
.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}
.read-more-link {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   用户口碑真实评价 (User Reviews)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}
@media (min-width: 992px) {
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.review-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(8px);
  transition: all var(--transition-normal);
}
.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(5, 255, 161, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 20px rgba(5, 255, 161, 0.15);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #05ffa1 0%, #9d4edd 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}
.review-author {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}
.review-identity {
  font-size: 0.78rem;
  color: var(--color-primary);
}
.review-stars {
  color: #fbbf24;
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.review-body {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 14px;
  font-style: italic;
}
.review-verified {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.faq-item:hover {
  border-color: rgba(5, 255, 161, 0.3);
}
.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  border: none;
  text-align: left;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-toggle-icon {
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}
.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 500px;
  transition: max-height 0.35s ease-in-out;
  padding: 0 24px 20px;
}

/* ==========================================================================
   权威外部链接与生态合作伙伴 (External Links)
   ========================================================================== */
.partners-section {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(4, 7, 14, 0.5);
}
.partners-title {
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.partners-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.partner-link {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-fast);
}
.partner-link:hover {
  color: var(--color-primary);
  border-color: rgba(5, 255, 161, 0.3);
  background: rgba(5, 255, 161, 0.05);
}

/* ==========================================================================
   底部页脚 (Footer)
   ========================================================================== */
.site-footer {
  background: #04070e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px;
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  color: var(--color-text-muted);
  margin-top: 14px;
  max-width: 320px;
  line-height: 1.65;
  font-size: 0.88rem;
}
.footer-col h4 {
  font-size: 0.95rem;
  color: #ffffff;
  margin-bottom: 18px;
  font-weight: 700;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 25px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-text-dim);
  font-size: 0.82rem;
}

/* ==========================================================================
   响应式媒体查询
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-sm {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .mobile-nav-active .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #080c16;
    border-bottom: 1px solid var(--color-border);
    padding: 24px;
    gap: 18px;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}