/* ===================================================================
   梯子云 (Tiziyun) - 全球高速网络加速器
   设计风格：极简未来线性风 + AI 极客高级感 (Next-Gen AI & Linear Aesthetic)
   曜石深空质感 | 神经网络微网格 | 灵动光晕 | 纯原生极速秒开
   =================================================================== */

:root {
  /* 基础底色：极深曜石黑与钛金黑夜 */
  --bg-main: #06070a;
  --bg-subtle: #0b0d13;
  --bg-card: rgba(13, 16, 24, 0.72);
  --bg-card-hover: rgba(20, 25, 38, 0.88);
  --bg-elevated: #111420;
  
  /* AI 极客微发光边框与高光 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 255, 255, 0.18);
  --border-ai-glow: rgba(56, 189, 248, 0.4);
  --border-neural: rgba(168, 85, 247, 0.35);
  
  /* AI 调色系统：电光青蓝、神经极光紫、深邃太空蓝 */
  --primary: #38bdf8;
  --primary-light: #7dd3fc;
  --primary-glow: #0284c7;
  --accent-purple: #a855f7;
  --accent-pink: #f472b6;
  --accent-emerald: #10b981;
  --accent-gold: #fbbf24;
  
  /* AI 流光渐变体系 */
  --ai-gradient-text: linear-gradient(135deg, #38bdf8 0%, #818cf8 40%, #c084fc 75%, #f472b6 100%);
  --ai-aurora-glow: radial-gradient(ellipse at 50% 0%, rgba(56, 189, 248, 0.22) 0%, rgba(168, 85, 247, 0.12) 40%, transparent 70%);
  --btn-ai-gradient: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
  
  /* 文字层级系统 */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* 现代无衬线字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --code-font: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  
  /* 圆角规范 */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* 阴影规范 */
  --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 16px 48px -12px rgba(0, 0, 0, 0.7);
  --shadow-ai-glow: 0 0 35px rgba(56, 189, 248, 0.2);
  --shadow-neural: 0 0 40px rgba(168, 85, 247, 0.18);
  
  --container-max: 1180px;
  --header-height: 70px;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  letter-spacing: -0.015em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  
  /* 顶级 AI 科技感：微神经网络背景网格 (Grid Matrix) + 极光顶灯 (Aurora Ambient) */
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    radial-gradient(ellipse 90% 55% at 50% -8%, rgba(56, 189, 248, 0.2) 0%, rgba(168, 85, 247, 0.12) 45%, transparent 75%),
    radial-gradient(circle at 90% 40%, rgba(168, 85, 247, 0.09) 0%, transparent 50%),
    radial-gradient(circle at 10% 70%, rgba(56, 189, 248, 0.07) 0%, transparent 50%);
  background-size: 40px 40px, 40px 40px, auto, auto, auto;
  background-attachment: fixed;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}

/* 区段头部：克制、极简、大气留白 */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 750;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.035em;
  background: linear-gradient(180deg, #ffffff 40%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===================================================================
   导航栏 (Navbar) - AI 极光流线磨砂质感
   =================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  background: rgba(6, 7, 10, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(6, 7, 10, 0.82);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
}

.brand-icon-box {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2) 0%, rgba(168, 85, 247, 0.25) 100%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
  position: relative;
  overflow: hidden;
}

.brand-icon-box::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.brand-text {
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  position: relative;
  padding: 6px 4px;
}

.nav-links a:hover {
  color: #fff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--ai-gradient-text);
  transition: all 0.25s ease;
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

.nav-links a:hover::after {
  width: 100%;
}

.mobile-actions {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-nav-login {
  padding: 8px 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-radius: var(--radius-full);
  background: transparent;
  font-weight: 500;
  border: 1px solid transparent;
}

.btn-nav-login:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.btn-nav-cta {
  padding: 8px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #030812;
  background: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: 
    0 1px 2px rgba(0, 0, 0, 0.1),
    0 4px 16px rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.85);
  transition: all 0.25s ease;
}

.btn-nav-cta:hover {
  background: #f8fafc;
  box-shadow: 0 6px 22px rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
}

.hamburger-btn {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.03);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.hamburger-btn span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-main);
  transition: all 0.3s ease;
}

/* ===================================================================
   首屏横幅区 (Hero Section) - AI 神经网络与微光浮动
   =================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 84px);
  padding-bottom: 110px;
  position: relative;
  text-align: center;
}

.hero-content {
  max-width: 920px;
  margin: 0 auto;
}

/* AI 科技感灵动微光徽章 */
.hero-promo-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 20px;
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.08) 0%, rgba(168, 85, 247, 0.12) 50%, rgba(244, 114, 182, 0.08) 100%);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: var(--radius-full);
  color: #f1f5f9;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 34px;
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.15);
  animation: badgeNeuralPulse 4s infinite alternate ease-in-out;
}

@keyframes badgeNeuralPulse {
  0% {
    border-color: rgba(56, 189, 248, 0.25);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.1);
  }
  100% {
    border-color: rgba(168, 85, 247, 0.45);
    box-shadow: 0 0 30px rgba(168, 85, 247, 0.25);
  }
}

.hero-promo-badge svg {
  color: #38bdf8;
  filter: drop-shadow(0 0 6px #38bdf8);
}

.hero-title {
  font-size: 3.9rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 28px;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #ffffff 30%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 动态 AI 极光流光品牌词 */
.hero-title .brand-highlight {
  background: var(--ai-gradient-text);
  background-size: 250% 250%;
  animation: aiGradientShift 6s ease infinite alternate;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

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

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 760px;
  margin: 0 auto 46px auto;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

/* OpenAI / Apple 顶级 AI 质感光波主按钮 */
.btn-primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 44px;
  font-size: 1.1rem;
  font-weight: 650;
  color: #030712;
  background: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: 
    0 0 0 1px rgba(255, 255, 255, 0.9),
    0 0 30px rgba(56, 189, 248, 0.4),
    0 12px 36px -4px rgba(0, 0, 0, 0.6);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  border: none;
}

/* 按钮微光闪耀光扫动画 */
.btn-primary-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 38%,
    rgba(255, 255, 255, 0.8) 50%,
    transparent 62%
  );
  transform: rotate(30deg) translateY(-100%);
  transition: transform 0.8s ease;
}

.btn-primary-cta:hover::after {
  transform: rotate(30deg) translateY(100%);
}

.btn-primary-cta:hover {
  transform: translateY(-2px);
  background: #f8fafc;
  box-shadow: 
    0 0 0 1px rgba(255, 255, 255, 1),
    0 0 45px rgba(56, 189, 248, 0.65),
    0 16px 45px -4px rgba(0, 0, 0, 0.7);
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.hero-stats-row::before {
  content: '';
  position: absolute;
  top: 0;
  left: 25%;
  right: 25%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.4), transparent);
}

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

.stat-num {
  font-size: 1.85rem;
  font-weight: 750;
  color: #fff;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ===================================================================
   核心优势图卡区 (Dynamic Cards Section)
   =================================================================== */
.cards-section {
  padding: 90px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: all 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card), 0 0 35px rgba(56, 189, 248, 0.16);
}

.feature-card:hover::before {
  left: 10%;
  right: 10%;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.7), transparent);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary);
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-wrapper {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.35);
  color: #fff;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
  letter-spacing: -0.02em;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   流媒体与 AI 超算中心大卡片 (AI Neural Hub & Streaming Card)
   =================================================================== */
.support-banner-card {
  background: linear-gradient(180deg, rgba(16, 21, 34, 0.8) 0%, rgba(10, 13, 20, 0.8) 100%);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-lg);
  padding: 44px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card), 0 0 45px rgba(56, 189, 248, 0.1);
  backdrop-filter: blur(24px);
}

.support-banner-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #38bdf8 30%, #a855f7 70%, transparent);
}

.support-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.support-title-group h3 {
  font-size: 1.6rem;
  font-weight: 750;
  color: #fff;
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}

.support-title-group p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.support-badge-vip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.35);
  color: #c084fc;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.2);
}

.support-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.showcase-block {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
  position: relative;
}

.showcase-block-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 650;
  margin-bottom: 18px;
  color: #f1f5f9;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: #e2e8f0;
  font-weight: 500;
  transition: all 0.2s ease;
}

.service-tag:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.4);
  color: #fff;
  transform: translateY(-1px);
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* ===================================================================
   定价卡片区 (Pricing Section)
   =================================================================== */
.pricing-section {
  padding: 90px 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 42px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(20px);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-card);
}

/* VIP2 推荐高亮卡片 - AI 极光全景 */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(22, 28, 44, 0.9) 0%, rgba(13, 17, 27, 0.9) 100%);
  border: 1px solid rgba(56, 189, 248, 0.45);
  box-shadow: 0 20px 50px -10px rgba(56, 189, 248, 0.25);
}

.pricing-card.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #38bdf8, transparent);
}

.recommend-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: #ffffff;
  color: #030812;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.3);
}

.plan-header {
  margin-bottom: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-subtle);
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.plan-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 18px 0;
}

.currency {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-main);
}

.price-num {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  letter-spacing: -0.04em;
}

.period {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.traffic-highlight {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
}

.plan-features {
  margin: 24px 0 36px 0;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  color: #cbd5e1;
  margin-bottom: 14px;
}

.plan-features li svg {
  flex-shrink: 0;
  color: #38bdf8;
}

.btn-pricing-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 13px 24px;
  font-size: 0.96rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-highlight);
  color: #fff;
  transition: all 0.25s ease;
}

.btn-pricing-cta:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.pricing-card.featured .btn-pricing-cta {
  background: #ffffff;
  border-color: #ffffff;
  color: #030812;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.25);
}

.pricing-card.featured .btn-pricing-cta:hover {
  background: #f1f5f9;
  box-shadow: 0 6px 26px rgba(255, 255, 255, 0.4);
}

/* ===================================================================
   深度特性解析区 (Why Choose Section)
   =================================================================== */
.why-section {
  padding: 90px 0;
}

.why-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 88px;
}

.why-row:last-child {
  margin-bottom: 0;
}

.why-text h3 {
  font-size: 2.1rem;
  font-weight: 750;
  color: #fff;
  margin-bottom: 18px;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.why-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 24px;
}

.why-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.why-point-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: #cbd5e1;
}

.why-point-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

/* 视觉化动态数据面板 (AI Supercomputing Node Telemetry) */
.data-panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card), 0 0 35px rgba(56, 189, 248, 0.08);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(24px);
}

.data-panel-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.5), transparent);
}

.panel-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: #10b981;
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: liveBlink 2s infinite ease-in-out;
}

@keyframes liveBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.node-metric-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.node-metric-item {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.node-flag {
  font-size: 1.25rem;
}

.node-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #f1f5f9;
}

.node-tag {
  font-size: 0.75rem;
  color: var(--primary);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  margin-left: 6px;
}

.node-stats {
  display: flex;
  align-items: center;
  gap: 20px;
}

.metric-badge {
  text-align: right;
}

.metric-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: #10b981;
  font-family: var(--code-font);
}

.metric-lbl {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.bandwidth-meter-box {
  margin-top: 20px;
  background: rgba(0, 0, 0, 0.28);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid var(--border-subtle);
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.meter-header span:last-child {
  color: var(--primary);
  font-weight: 600;
}

.meter-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.meter-fill {
  width: 98.4%;
  height: 100%;
  background: linear-gradient(90deg, #38bdf8 0%, #10b981 100%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

/* 终端代码块：macOS 极客密码学审计风格 */
.terminal-card {
  background: #080a0f;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  font-family: var(--code-font);
}

.terminal-header {
  background: rgba(255, 255, 255, 0.025);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: rgba(239, 68, 68, 0.85); }
.dot-yellow { background: rgba(245, 158, 11, 0.85); }
.dot-green { background: rgba(16, 185, 129, 0.85); }

.terminal-title {
  margin-left: auto;
  margin-right: auto;
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 500;
}

.terminal-body {
  padding: 24px;
  font-size: 0.86rem;
  line-height: 1.8;
  color: #e2e8f0;
}

.term-line {
  margin-bottom: 4px;
}

.term-prompt {
  color: var(--primary);
  font-weight: 600;
}

.term-cmd {
  color: #f8fafc;
}

.term-comment {
  color: #64748b;
}

.term-success {
  color: #10b981;
}

.term-cyan {
  color: #38bdf8;
}

.term-warn {
  color: #fbbf24;
}

.cursor-blink {
  display: inline-block;
  width: 7px;
  height: 15px;
  background: var(--primary);
  vertical-align: middle;
  margin-left: 4px;
  animation: cursorBlink 1s infinite;
}

@keyframes cursorBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* ===================================================================
   底部转化区 (CTA Section)
   =================================================================== */
.bottom-cta-section {
  padding: 100px 0;
  position: relative;
}

.bottom-cta-box {
  background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(56, 189, 248, 0.12) 0%, rgba(168, 85, 247, 0.05) 50%, rgba(13, 16, 24, 0.95) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 72px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card), 0 0 50px rgba(56, 189, 248, 0.12);
}

.bottom-cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.5), transparent);
}

.bottom-cta-title {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -0.035em;
}

.bottom-cta-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px auto;
  line-height: 1.75;
}

.btn-large-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 17px 48px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #030812;
  background: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: 
    0 0 0 1px rgba(255, 255, 255, 0.9),
    0 0 35px rgba(56, 189, 248, 0.45),
    0 12px 35px rgba(0, 0, 0, 0.5);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
}

.btn-large-cta:hover {
  transform: translateY(-2px) scale(1.01);
  background: #f8fafc;
  box-shadow: 
    0 0 0 1px rgba(255, 255, 255, 1),
    0 0 50px rgba(56, 189, 248, 0.7),
    0 16px 45px rgba(0, 0, 0, 0.6);
}

.cta-guarantee-note {
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ===================================================================
   用户评价跑马灯区 (Testimonials Marquee Section)
   =================================================================== */
.testimonials-section {
  padding: 90px 0;
  overflow: hidden;
}

.marquee-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: marqueeScroll 40s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 12px)); }
}

.testimonial-card {
  width: 350px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
  flex-shrink: 0;
  backdrop-filter: blur(20px);
  transition: all 0.25s ease;
}

.testimonial-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.avatar-initial {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.user-info h4 {
  font-size: 0.98rem;
  font-weight: 600;
  color: #f8fafc;
}

.user-info span {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.star-rating {
  color: #fbbf24;
  margin-bottom: 12px;
  display: flex;
  gap: 3px;
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.65;
}

/* ===================================================================
   常见问题解答区 (FAQ Section)
   =================================================================== */
.faq-section {
  padding: 90px 0;
}

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item[open] {
  border-color: var(--border-highlight);
  background: rgba(20, 24, 36, 0.8);
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.02rem;
  font-weight: 600;
  color: #f1f5f9;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon-toggle {
  width: 20px;
  height: 20px;
  color: var(--text-dim);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-icon-toggle {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  padding: 0 24px 22px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
}

/* ===================================================================
   页脚 (Footer)
   =================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #050608;
  padding: 64px 0 36px 0;
  margin-top: 60px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-links-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-links-nav a {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.footer-links-nav a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

/* ===================================================================
   子页面通用样式 (about.html, terms.html, privacy.html, sitemap.html)
   =================================================================== */
.subpage-hero {
  padding: calc(var(--header-height) + 50px) 0 40px 0;
  text-align: center;
}

.subpage-container {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 24px 80px 24px;
}

.subpage-article {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(20px);
  color: #cbd5e1;
  box-shadow: var(--shadow-card);
}

.subpage-article h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin: 36px 0 16px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.02em;
}

.subpage-article h2:first-of-type {
  margin-top: 0;
}

.subpage-article h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 24px 0 12px 0;
}

.subpage-article p {
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.subpage-article ul, .subpage-article ol {
  margin-bottom: 20px;
  padding-left: 20px;
}

.subpage-article ul li {
  list-style: disc;
  margin-bottom: 10px;
  line-height: 1.7;
}

.subpage-article ol li {
  list-style: decimal;
  margin-bottom: 10px;
  line-height: 1.7;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.sitemap-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sitemap-card h3 {
  font-size: 1.1rem;
  color: #fff;
  margin-top: 0;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 8px;
}

.sitemap-card ul {
  padding-left: 0;
  margin-bottom: 0;
}

.sitemap-card ul li {
  list-style: none;
  margin-bottom: 10px;
}

.sitemap-card a {
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sitemap-card a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ===================================================================
   推荐资讯与 SEO 深度长文页面样式
   =================================================================== */
.news-page-header {
  padding: calc(var(--header-height) + 50px) 0 40px 0;
  text-align: center;
}

.news-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  align-items: start;
  padding-bottom: 80px;
}

.news-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-subtle);
}

.news-sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-item a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
  padding: 8px 10px;
  border-radius: var(--radius-xs);
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}

.toc-item a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.03);
  border-left-color: var(--primary);
  transform: translateX(2px);
}

.news-articles-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.seo-article {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(20px);
  scroll-margin-top: calc(var(--header-height) + 24px);
  transition: border-color 0.25s ease;
  box-shadow: var(--shadow-subtle);
}

.seo-article:hover {
  border-color: var(--border-highlight);
}

.article-header {
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-badge-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.article-badge {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  color: var(--primary);
  border: 1px solid var(--border-subtle);
}

.article-badge.gold {
  background: rgba(251, 191, 36, 0.08);
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.25);
}

.article-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body {
  font-size: 1rem;
  color: #cbd5e1;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin: 32px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.02em;
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin: 24px 0 12px 0;
}

.article-body p {
  margin-bottom: 16px;
  color: #cbd5e1;
}

.article-body strong {
  color: #fff;
}

.article-body ul, .article-body ol {
  margin-bottom: 20px;
  padding-left: 22px;
}

.article-body ul li {
  list-style: disc;
  margin-bottom: 10px;
  line-height: 1.7;
}

.article-body ol li {
  list-style: decimal;
  margin-bottom: 10px;
  line-height: 1.7;
}

.article-body blockquote {
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
  color: #94a3b8;
  font-style: italic;
}

.article-body code {
  font-family: var(--code-font);
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-size: 0.9em;
  color: #38bdf8;
}

.article-body pre {
  font-family: var(--code-font);
  background: #06080d;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 20px 0;
  color: #e2e8f0;
}

.seo-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

.seo-table th {
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  font-weight: 600;
}

.seo-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  color: #cbd5e1;
}

.seo-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.015);
}

.internal-link {
  color: var(--primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.internal-link:hover {
  color: #fff;
}

.article-cta-box {
  margin-top: 32px;
  padding: 22px 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.article-cta-box p {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: #e2e8f0;
}

/* ===================================================================
   响应式适配 (Responsive Media Queries)
   =================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .why-row {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .support-showcase-grid {
    grid-template-columns: 1fr;
  }
  
  .news-layout {
    grid-template-columns: 1fr;
  }
  
  .news-sidebar {
    position: static;
    margin-bottom: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  
  .navbar .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(6, 7, 10, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 32px 24px;
    gap: 18px;
    align-items: flex-start;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
  }
  
  .navbar .nav-links.active {
    transform: translateX(0);
  }
  
  .navbar .nav-links a {
    font-size: 1.1rem;
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-subtle);
  }
  
  .navbar .nav-actions {
    display: none;
  }
  
  .navbar .nav-links .mobile-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 12px;
    margin-top: 20px;
  }
  
  .navbar .nav-links .mobile-actions .btn-nav-login,
  .navbar .nav-links .mobile-actions .btn-nav-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px;
    font-size: 1rem;
  }
  
  .hamburger-btn {
    display: flex;
  }
  
  .hamburger-btn.active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }
  
  .hamburger-btn.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger-btn.active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }
  
  .hero-title {
    font-size: 2.3rem;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-primary-cta {
    width: 100%;
    padding: 15px 24px;
  }
  
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 20px;
  }
  
  .section-title {
    font-size: 1.9rem;
  }
  
  .why-text h3 {
    font-size: 1.65rem;
  }
  
  .node-stats {
    gap: 10px;
  }
  
  .bottom-cta-box {
    padding: 44px 20px;
  }
  
  .bottom-cta-title {
    font-size: 1.95rem;
  }
  
  .btn-large-cta {
    width: 100%;
    padding: 16px 24px;
    font-size: 1.05rem;
  }
  
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .footer-links-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    width: 100%;
  }
  
  .subpage-article {
    padding: 28px 20px;
  }
  
  .seo-article {
    padding: 28px 20px;
  }
  
  .article-title {
    font-size: 1.35rem;
  }
  
  .sitemap-grid {
    grid-template-columns: 1fr;
  }
}