/* ===================================================================
   NEXITALLYVPN.CYOU - Nexitally 奶昔机场官方落地页与知识库样式表
   纯原生 CSS3 架构 | 零外部依赖 | 极致秒开 | GPU 硬件加速动态背景
   =================================================================== */

:root {
  --bg-primary: #060913;
  --bg-secondary: #0c1222;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 62, 0.9);
  --bg-card-featured: rgba(18, 28, 54, 0.92);
  --border-color: rgba(255, 255, 255, 0.09);
  --border-accent: rgba(0, 242, 254, 0.4);
  --border-featured: rgba(255, 0, 127, 0.55);
  
  --primary: #00f2fe;
  --primary-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #ff007f 100%);
  --secondary: #ff007f;
  --accent-purple: #7928ca;
  --accent-green: #10b981;
  --accent-gold: #f59e0b;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --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;
  
  --container-max: 1280px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 45px rgba(0, 0, 0, 0.55);
  --shadow-cyan: 0 0 30px rgba(0, 242, 254, 0.3);
  --shadow-pink: 0 0 35px rgba(255, 0, 127, 0.35);
  --shadow-purple: 0 0 30px rgba(121, 40, 202, 0.35);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--bg-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

img, svg {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

/* ===================================================================
   动态背景系统 (纯原生 CSS 硬件加速，零外部JS，极致流畅)
   =================================================================== */
.dynamic-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.cosmic-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
}

.aurora-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.32;
  will-change: transform;
}

.orb-1 {
  top: -10%;
  left: 15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #00f2fe 0%, rgba(0, 242, 254, 0) 70%);
  animation: floatOrb1 22s infinite ease-in-out alternate;
}

.orb-2 {
  top: 35%;
  right: -5%;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #ff007f 0%, rgba(255, 0, 127, 0) 70%);
  animation: floatOrb2 26s infinite ease-in-out alternate;
}

.orb-3 {
  bottom: -15%;
  left: 20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, #7928ca 0%, rgba(121, 40, 202, 0) 70%);
  animation: floatOrb3 30s infinite ease-in-out alternate;
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(120px, 80px, 0) scale(1.15); }
  100% { transform: translate3d(-80px, 140px, 0) scale(0.9); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-140px, -90px, 0) scale(1.1); }
  100% { transform: translate3d(-60px, 110px, 0) scale(0.95); }
}

@keyframes floatOrb3 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(150px, -120px, 0) scale(1.2); }
  100% { transform: translate3d(-100px, -60px, 0) scale(0.85); }
}

/* ===================================================================
   布局与容器
   =================================================================== */
.site-wrapper {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.section-title .text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================================================
   导航栏 Header
   =================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 19, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
  transition: all 0.3s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

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

/* ===================================================================
   按钮与 CTA 样式规范
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.55), 0 0 15px rgba(255, 0, 127, 0.4);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-pulse {
  position: relative;
}

.btn-pulse::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: inherit;
  background: var(--primary-gradient);
  opacity: 0.5;
  filter: blur(8px);
  z-index: -1;
  animation: pulseGlow 2.5s infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.04); }
}

/* ===================================================================
   Hero 头部首屏
   =================================================================== */
.hero-section {
  padding: 90px 0 70px 0;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.35);
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.hero-tag-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}

.hero-tag-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero-title .text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 820px;
  margin: 0 auto 40px auto;
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: var(--text-muted);
  font-size: 0.88rem;
  flex-wrap: wrap;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.guarantee-item svg {
  color: var(--accent-green);
}

/* 数据统计条 */
.hero-stats-banner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 60px;
  padding: 30px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat-card {
  text-align: center;
  padding: 10px;
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-sans);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===================================================================
   核心优势卡片网格
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-cyan);
}

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

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(0, 242, 254, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--primary);
}

.feature-title {
  font-size: 1.28rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.68;
}

/* ===================================================================
   价格同排展示区域 (所有价格同排核心规则)
   =================================================================== */
.pricing-section {
  position: relative;
}

/* 价格同排核心展示区：严格横向同排对比并列展示，永不折行 */
.pricing-grid-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 10px 0 20px;
}

.pricing-grid-same-row {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  min-width: 1060px; /* 保证桌面端与平板横屏下全部 4 方案严格处于同一水平排对比 */
  gap: 16px;
  align-items: stretch;
  margin-top: 15px;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-cyan);
}

.pricing-card.featured {
  background: var(--bg-card-featured);
  border-color: var(--border-featured);
  box-shadow: var(--shadow-pink);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-8px);
  box-shadow: 0 20px 50px rgba(255, 0, 127, 0.45);
}

.pricing-badge-popular {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ff007f, #7928ca);
  color: #ffffff;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 4px 15px rgba(255, 0, 127, 0.45);
  white-space: nowrap;
}

.plan-header {
  margin-bottom: 18px;
  text-align: center;
}

.plan-badge-mini {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.28);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.plan-name {
  font-size: 1.28rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.plan-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.45;
  min-height: 38px;
}

.plan-price-wrap {
  text-align: center;
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 18px;
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  vertical-align: top;
  margin-right: 2px;
}

.price-num {
  font-size: 2.85rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.price-period {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-left: 3px;
}

.billing-cycles-box {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 20px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.cycle-row {
  display: flex;
  justify-content: space-between;
  padding: 3px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
}

.cycle-row:last-child {
  border-bottom: none;
}

.cycle-highlight {
  color: var(--accent-green);
  font-weight: 600;
}

.plan-features-list {
  margin-bottom: 24px;
  flex-grow: 1;
  list-style: none;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.plan-feature-item svg {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-cta-wrap {
  margin-top: auto;
}

.plan-cta-wrap .btn {
  width: 100%;
  font-size: 0.92rem;
  padding: 11px 14px;
  font-weight: 700;
  text-align: center;
}

/* 价格底部官方保障与购买建议横幅 */
.pricing-notice-banner {
  margin-top: 26px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(0, 242, 254, 0.22);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  box-shadow: var(--shadow-sm);
}

.pricing-notice-banner .notice-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.pricing-notice-banner strong {
  color: var(--text-primary);
}

/* ===================================================================
   客户端与协议支持
   =================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  transition: all 0.25s ease;
}

.client-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.client-os-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px auto;
  color: var(--primary);
}

.client-os-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.client-apps-tag {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ===================================================================
   知识库文章专栏 (SEO 与内部跳转核心)
   =================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.article-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-cyan);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-category {
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.article-card:hover .article-card-title {
  color: var(--primary);
}

.article-card-excerpt {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.article-tag {
  font-size: 0.76rem;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
}

.article-read-more svg {
  transition: transform 0.2s ease;
}

.article-card:hover .article-read-more svg {
  transform: translateX(4px);
}

/* ===================================================================
   用户真实评价 Testimonials
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  position: relative;
  transition: all 0.25s ease;
}

.testimonial-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 16px;
}

.testimonial-quote {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
  font-style: italic;
}

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

.user-avatar-initial {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f2fe, #ff007f);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.user-info-name {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-primary);
}

.user-info-role {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===================================================================
   常见问题 FAQ
   =================================================================== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: all 0.25s ease;
}

.faq-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.faq-question {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.faq-q-badge {
  background: rgba(0, 242, 254, 0.15);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}

.faq-answer {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 36px;
}

/* ===================================================================
   权威外链与技术生态
   =================================================================== */
.outbound-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.outbound-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px;
  transition: all 0.2s ease;
}

.outbound-card:hover {
  background: rgba(22, 33, 62, 0.8);
  border-color: var(--primary);
  transform: translateY(-3px);
}

.outbound-card-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.outbound-card-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===================================================================
   底部全局 CTA 横幅
   =================================================================== */
.banner-cta {
  background: linear-gradient(135deg, rgba(13, 20, 36, 0.95), rgba(20, 10, 35, 0.95));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow-cyan);
  position: relative;
  overflow: hidden;
}

.banner-cta::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.banner-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.banner-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px auto;
}

/* ===================================================================
   页脚 Footer
   =================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: #04060c;
  padding: 60px 0 30px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand-desc {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links li {
  margin-bottom: 10px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===================================================================
   文章内页布局规范 (Article View)
   =================================================================== */
.article-header {
  padding: 60px 0 40px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 50px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
}

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

.article-main-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.article-publish-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-container-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 50px;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-content h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 30px 0 14px 0;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-content ul li {
  list-style-type: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style-type: decimal;
  margin-bottom: 8px;
}

.article-content strong {
  color: #ffffff;
  font-weight: 700;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-content a:hover {
  color: #ffffff;
}

.article-alert-box {
  background: rgba(0, 242, 254, 0.08);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 30px 0;
  font-size: 0.96rem;
  color: var(--text-secondary);
}

.article-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-links li {
  margin-bottom: 12px;
}

.sidebar-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: block;
}

.sidebar-links a:hover {
  color: var(--primary);
}

.related-articles-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

/* ===================================================================
   响应式媒体查询
   =================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .features-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid-same-row {
    gap: 16px;
  }
  .pricing-card {
    padding: 30px 20px;
  }
  .price-num {
    font-size: 2.8rem;
  }
  .clients-grid, .outbound-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-container-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .hero-stats-banner {
    grid-template-columns: repeat(2, 1fr);
    padding: 20px;
  }
  .section {
    padding: 60px 0;
  }
  /* 移动端保证全部价格同排横向滑动展示，绝不纵向堆叠 */
  .pricing-grid-wrapper {
    overflow-x: auto;
    padding-bottom: 24px;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
  }
  .pricing-grid-same-row {
    display: flex !important;
    flex-wrap: nowrap !important;
    min-width: unset;
    gap: 16px;
  }
  .pricing-card {
    flex: 0 0 85%;
    max-width: 320px;
    scroll-snap-align: center;
    padding: 28px 18px;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .features-grid, .testimonials-grid, .faq-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .nav-links {
    display: none; /* 移动端精简秒开 */
  }
  .sweet-item {
    transform: scale(0.65);
    opacity: 0.36 !important;
  }
  .star-item {
    transform: scale(0.7);
    opacity: 0.45 !important;
  }
}


/* ===================================================================
   棒棒糖与冰淇淋漂浮动画 (纯 CSS 硬件加速，零外部JS)
   =================================================================== */
.sweet-item {
  position: absolute;
  pointer-events: none;
  filter: drop-shadow(0 8px 26px rgba(0, 242, 254, 0.42)) drop-shadow(0 14px 36px rgba(255, 0, 127, 0.36));
  will-change: transform;
  transition: opacity 0.3s ease;
  user-select: none;
}

.float-track-1 {
  animation: floatSweet1 16s ease-in-out infinite alternate;
}
.float-track-2 {
  animation: floatSweet2 20s ease-in-out infinite alternate;
}
.float-track-3 {
  animation: floatSweet3 24s ease-in-out infinite alternate;
}
.float-track-4 {
  animation: floatSweet4 18s ease-in-out infinite alternate;
}
.float-track-5 {
  animation: floatSweet5 22s ease-in-out infinite alternate;
}
.float-track-6 {
  animation: floatSweet6 26s ease-in-out infinite alternate;
}

@keyframes floatSweet1 {
  0% { transform: translate3d(0, 0, 0) rotate(8deg) scale(1); }
  50% { transform: translate3d(30px, -45px, 0) rotate(-12deg) scale(1.08); }
  100% { transform: translate3d(-25px, -90px, 0) rotate(16deg) scale(0.95); }
}

@keyframes floatSweet2 {
  0% { transform: translate3d(0, 0, 0) rotate(-14deg) scale(0.96); }
  50% { transform: translate3d(-35px, -55px, 0) rotate(10deg) scale(1.1); }
  100% { transform: translate3d(22px, -100px, 0) rotate(-8deg) scale(1); }
}

@keyframes floatSweet3 {
  0% { transform: translate3d(0, 0, 0) rotate(16deg) scale(1); }
  50% { transform: translate3d(38px, -40px, 0) rotate(-6deg) scale(1.06); }
  100% { transform: translate3d(-18px, -80px, 0) rotate(22deg) scale(0.94); }
}

@keyframes floatSweet4 {
  0% { transform: translate3d(0, 0, 0) rotate(-10deg) scale(1.05); }
  50% { transform: translate3d(-28px, 45px, 0) rotate(15deg) scale(0.96); }
  100% { transform: translate3d(30px, 90px, 0) rotate(-18deg) scale(1.08); }
}

@keyframes floatSweet5 {
  0% { transform: translate3d(0, 0, 0) rotate(12deg) scale(0.95); }
  50% { transform: translate3d(32px, 50px, 0) rotate(-14deg) scale(1.07); }
  100% { transform: translate3d(-30px, 95px, 0) rotate(10deg) scale(1); }
}

@keyframes floatSweet6 {
  0% { transform: translate3d(0, 0, 0) rotate(-16deg) scale(1); }
  50% { transform: translate3d(-40px, -35px, 0) rotate(12deg) scale(1.06); }
  100% { transform: translate3d(25px, -75px, 0) rotate(-20deg) scale(0.94); }
}

/* ===================================================================
   璀璨小星星闪烁与漂浮动效 (梦幻氛围星尘)
   =================================================================== */
.star-item {
  position: absolute;
  pointer-events: none;
  will-change: transform, opacity;
  user-select: none;
  filter: drop-shadow(0 0 8px rgba(250, 204, 21, 0.8)) drop-shadow(0 0 16px rgba(0, 242, 254, 0.5));
}

.star-twinkle-1 {
  animation: starTwinkle1 3.2s ease-in-out infinite alternate;
}
.star-twinkle-2 {
  animation: starTwinkle2 4.6s ease-in-out infinite alternate;
}
.star-twinkle-3 {
  animation: starTwinkle3 2.8s ease-in-out infinite alternate;
}
.star-twinkle-4 {
  animation: starTwinkle4 5.2s ease-in-out infinite alternate;
}
.star-twinkle-5 {
  animation: starTwinkle5 3.8s ease-in-out infinite alternate;
}

@keyframes starTwinkle1 {
  0% { transform: scale(0.8) rotate(0deg) translate3d(0, 0, 0); opacity: 0.35; }
  50% { transform: scale(1.22) rotate(45deg) translate3d(6px, -8px, 0); opacity: 1; filter: drop-shadow(0 0 14px rgba(250, 204, 21, 0.95)) drop-shadow(0 0 24px rgba(255, 0, 127, 0.6)); }
  100% { transform: scale(0.85) rotate(90deg) translate3d(-4px, 6px, 0); opacity: 0.4; }
}

@keyframes starTwinkle2 {
  0% { transform: scale(1.15) rotate(0deg) translate3d(0, 0, 0); opacity: 0.9; filter: drop-shadow(0 0 16px rgba(0, 242, 254, 0.9)); }
  50% { transform: scale(0.78) rotate(-35deg) translate3d(-8px, 10px, 0); opacity: 0.3; }
  100% { transform: scale(1.2) rotate(-70deg) translate3d(4px, -6px, 0); opacity: 0.95; }
}

@keyframes starTwinkle3 {
  0% { transform: scale(0.75) rotate(0deg) translate3d(0, 0, 0); opacity: 0.3; }
  50% { transform: scale(1.3) rotate(30deg) translate3d(8px, -12px, 0); opacity: 1; filter: drop-shadow(0 0 18px rgba(255, 0, 127, 0.9)) drop-shadow(0 0 24px rgba(250, 204, 21, 0.7)); }
  100% { transform: scale(0.82) rotate(60deg) translate3d(-6px, 4px, 0); opacity: 0.35; }
}

@keyframes starTwinkle4 {
  0% { transform: scale(0.9) rotate(0deg) translate3d(0, 0, 0); opacity: 0.45; }
  50% { transform: scale(1.18) rotate(-45deg) translate3d(-6px, -10px, 0); opacity: 0.98; filter: drop-shadow(0 0 15px rgba(192, 132, 252, 0.9)); }
  100% { transform: scale(0.85) rotate(-90deg) translate3d(8px, 6px, 0); opacity: 0.4; }
}

@keyframes starTwinkle5 {
  0% { transform: scale(1.1) rotate(0deg) translate3d(0, 0, 0); opacity: 0.85; }
  50% { transform: scale(0.8) rotate(40deg) translate3d(10px, 8px, 0); opacity: 0.3; }
  100% { transform: scale(1.25) rotate(80deg) translate3d(-5px, -10px, 0); opacity: 1; filter: drop-shadow(0 0 16px rgba(0, 242, 254, 0.95)); }
}