/* ==========================================================================
   超实惠机场 (cshjichang.homes)
   Industrial 1U Server Blade Console UI System
   Palette: Anodized Titanium Black (#07080a), Sandblasted Slate Grey, 
            Cobalt-Indigo status lines, Neon Hardware Emerald (#00ff88)
   ========================================================================== */

:root {
  /* 基础与亮色主题：精密拉丝铝合金工业感（默认白天模式） */
  --bg-main: #f0f3f7;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #e8ecf2;
  --bg-chassis: #dce2eb;
  --bg-glass: rgba(240, 243, 247, 0.92);

  /* 结构线条与螺栓金属质感 */
  --border-chassis: #cbd5e1;
  --border-bevel: #94a3b8;
  --border-highlight: rgba(255, 255, 255, 0.9);
  --bolt-color: #94a3b8;
  --bolt-shadow: rgba(0, 0, 0, 0.15);

  /* 文字配色 */
  --text-primary: #090d16;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;

  /* 工业级指示色系 */
  --status-emerald: #059669;
  --status-emerald-glow: rgba(5, 150, 105, 0.25);
  --status-amber: #d97706;
  --status-amber-glow: rgba(217, 119, 6, 0.25);
  --status-cobalt: #1d4ed8;
  --status-cobalt-light: #2563eb;
  --status-cobalt-glow: rgba(37, 99, 235, 0.28);

  /* 核心按键与机架光晕 */
  --brand-gradient: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
  --brand-pill-bg: #2563eb;
  --brand-pill-border: #1e40af;
  --brand-pill-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);

  /* 尺寸与圆角（机架微圆角） */
  --max-w: 1240px;
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  /* 过渡 */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* 夜间模式（Anodized Titanium Black 1U 刀片机柜风格） */
[data-theme="dark"] {
  --bg-main: #07080a;
  --bg-surface: #0e121a;
  --bg-surface-elevated: #151c27;
  --bg-chassis: #0b0f15;
  --bg-glass: rgba(7, 8, 10, 0.88);

  --border-chassis: #1e2634;
  --border-bevel: #283344;
  --border-highlight: rgba(255, 255, 255, 0.06);
  --bolt-color: #475569;
  --bolt-shadow: rgba(0, 0, 0, 0.8);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;

  --status-emerald: #00ff88;
  --status-emerald-glow: rgba(0, 255, 136, 0.45);
  --status-amber: #f59e0b;
  --status-amber-glow: rgba(245, 158, 11, 0.4);
  --status-cobalt: #3b82f6;
  --status-cobalt-light: #60a5fa;
  --status-cobalt-glow: rgba(59, 130, 246, 0.45);

  --brand-gradient: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  --brand-pill-bg: #2563eb;
  --brand-pill-border: #60a5fa;
  --brand-pill-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* 页面锚点平滑跳转抵消导航栏高度 */
section {
  scroll-margin-top: 5.5rem;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 工业级散热栅格纹理 (Heat Vents Texture) */
.heat-vents-pattern {
  background-image: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 8px,
    rgba(148, 163, 184, 0.12) 8px,
    rgba(148, 163, 184, 0.12) 10px
  );
}

/* 螺栓紧固件 (Fasteners / Bolts) */
.bolt-fastener {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #cbd5e1 0%, var(--bolt-color) 70%);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4), 0 1px 3px var(--bolt-shadow);
  border: 1px solid var(--border-bevel);
  z-index: 3;
}
.bolt-fastener::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 1px;
  background: rgba(0, 0, 0, 0.45);
  transform: translate(-50%, -50%) rotate(45deg);
}
.bolt-tl { top: 10px; left: 10px; }
.bolt-tr { top: 10px; right: 10px; }
.bolt-bl { bottom: 10px; left: 10px; }
.bolt-br { bottom: 10px; right: 10px; }

/* 硬件活动 LED 指示灯 */
.led-diode {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.led-emerald {
  background-color: var(--status-emerald);
  box-shadow: 0 0 8px var(--status-emerald-glow);
  animation: ledPulse 2s infinite ease-in-out;
}

.led-amber {
  background-color: var(--status-amber);
  box-shadow: 0 0 6px var(--status-amber-glow);
}

.led-cobalt {
  background-color: var(--status-cobalt-light);
  box-shadow: 0 0 8px var(--status-cobalt-glow);
}

.led-rapid-stream {
  animation: dataStreamBlink 0.35s infinite alternate ease-in-out;
}

@keyframes ledPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.9); }
}

@keyframes dataStreamBlink {
  0% { opacity: 0.2; }
  100% { opacity: 1; filter: drop-shadow(0 0 6px var(--status-emerald)); }
}

/* ==========================================================================
   导航栏 (1U Chassis Rack Header)
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-chassis);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.6rem;
}

.brand-blade-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo-img {
  height: 40px;
  width: auto;
  border-radius: var(--radius-sm);
  display: block;
  object-fit: contain;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.brand-blade-logo:hover .site-logo-img {
  transform: scale(1.03);
  box-shadow: 0 0 16px rgba(37, 99, 235, 0.35);
}

/* 导航目录 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.nav-item-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  position: relative;
}

.nav-item-link:hover {
  color: var(--status-cobalt);
  background-color: rgba(37, 99, 235, 0.08);
}

/* 推荐资讯特别徽章高亮 */
.nav-item-link.news-portal {
  color: var(--status-cobalt);
  font-weight: 700;
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: rgba(37, 99, 235, 0.06);
}
.nav-item-link.news-portal:hover {
  border-color: var(--status-cobalt);
  background: rgba(37, 99, 235, 0.12);
}
.news-hot-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #ef4444;
  box-shadow: 0 0 5px #ef4444;
}

/* 导航右侧硬件按键区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 工业精密昼夜切换按钮 (Milled-aluminum Blade Switch) */
.blade-theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bevel);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--text-mono);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 2px 4px rgba(0,0,0,0.1);
}

.blade-theme-toggle:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 2px 8px rgba(0,0,0,0.15);
}

.blade-theme-toggle svg {
  width: 17px;
  height: 17px;
}

[data-theme="light"] .theme-icon-sun { display: none; }
[data-theme="light"] .theme-icon-moon { display: block; color: var(--status-cobalt); }
[data-theme="dark"] .theme-icon-sun { display: block; color: var(--status-amber); }
[data-theme="dark"] .theme-icon-moon { display: none; }

/* 工业感纹理蓝色药丸按钮 (Textured Blue Pill) */
.btn-blade-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.68rem 1.45rem;
  border-radius: var(--radius-full);
  background: var(--brand-pill-bg);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  border: 1px solid var(--brand-pill-border);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.4), var(--brand-pill-shadow);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-spring);
  position: relative;
  overflow: hidden;
}

.btn-blade-pill::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, transparent 100%);
  pointer-events: none;
}

.btn-blade-pill:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5), 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-blade-pill:active {
  transform: translateY(2px) scale(0.99);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   主视觉区 (Hero 1U Server Blade Console)
   ========================================================================== */
.hero-chassis-section {
  padding: 4.5rem 0 4rem;
  position: relative;
}

.hero-console-blade {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-lg);
  position: relative;
  padding: 3rem 3rem 2.75rem;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 12px 36px rgba(0, 0, 0, 0.12);
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* 顶部机架状态面板条 */
.console-blade-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-chassis);
  padding-bottom: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* 左侧状态横幅: • 赠送独家EMBY影视库 */
.emby-status-banner {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.3);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--status-emerald);
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.12);
}

.blade-chassis-metrics {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--text-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.metric-pill {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.metric-pill strong {
  color: var(--text-primary);
}

/* 光纤LC接口插槽装饰槽 */
.lc-fiber-ports {
  display: flex;
  gap: 6px;
  background: var(--bg-surface-elevated);
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-bevel);
}
.lc-port-slot {
  width: 9px;
  height: 14px;
  background: #090d16;
  border-radius: 1px;
  border: 1px solid #334155;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.8);
  position: relative;
}
.lc-port-slot::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 3px;
  height: 3px;
  background: var(--status-emerald);
  box-shadow: 0 0 5px var(--status-emerald);
}

/* 主视觉内容网格 */
.hero-content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

/* 高对比大标题与简介 */
.hero-high-contrast-headline {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.brand-callout-text {
  color: var(--status-cobalt);
  display: inline-block;
  position: relative;
}

.hero-sub-title-industrial {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.35;
}

.hero-brief-intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2.25rem;
}

.hero-cta-wrapper {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* 右侧 1U 实时监控刀片面板 */
.server-blade-hud {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bevel);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: relative;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 8px 24px rgba(0, 0, 0, 0.08);
}

.hud-top-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-chassis);
  padding-bottom: 0.85rem;
  margin-bottom: 1.25rem;
  font-family: var(--text-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hud-items-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hud-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-sm);
}

.hud-label {
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hud-val {
  font-family: var(--text-mono);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--status-cobalt);
}

.hud-val.emerald {
  color: var(--status-emerald);
}

/* ==========================================================================
   板块通用工业结构 (Core Sections)
   ========================================================================== */
.section-padding {
  padding: 4.5rem 0;
}

.section-header-blade {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.25rem;
  position: relative;
}

.blade-header-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--text-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--status-cobalt);
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-xs);
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.blade-section-title {
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.blade-section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   产品核心优势介绍 (3个图文卡片 - 工业 1U 刀片服务器模块)
   Micro-interactions: Hover draws sharp reflective cobalt halos around edges
   ========================================================================== */
.features-blade-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.server-blade-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.85rem;
  position: relative;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 4px 12px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  cursor: default;
}

/* 锐利反射钴蓝光晕微交互 (Sharp Reflective Cobalt Halo) */
.server-blade-card:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 10px 30px var(--status-cobalt-glow);
  transform: translateY(-4px);
}

.blade-card-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.blade-slot-id {
  font-family: var(--text-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-surface-elevated);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-chassis);
}

.blade-icon-chassis {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bevel);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--status-cobalt);
  margin-bottom: 1.25rem;
  box-shadow: inset 0 1px 0 var(--border-highlight);
}

.server-blade-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.server-blade-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.68;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.blade-spec-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.spec-pill {
  font-family: var(--text-mono);
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
}

/* ==========================================================================
   流媒体图卡 & AI 支持图卡 (Showcase Blades)
   ========================================================================== */
.showcase-blade-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.showcase-blade {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  position: relative;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 6px 18px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.showcase-blade:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 12px 32px var(--status-cobalt-glow);
  transform: translateY(-4px);
}

.showcase-blade-top {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.showcase-blade-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.showcase-blade-icon.media {
  background: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
  color: #fff;
}

.showcase-blade-icon.ai {
  background: linear-gradient(135deg, #059669 0%, #0d9488 100%);
  color: #fff;
}

.showcase-blade h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}

.showcase-tagline {
  font-family: var(--text-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--status-cobalt);
}

.showcase-blade p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.media-tags-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.media-tag-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  font-weight: 600;
}

.media-tag-item svg {
  width: 17px;
  height: 17px;
}

.showcase-bottom-telemetry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-chassis);
  text-align: center;
  margin-top: auto;
}

.telemetry-num {
  font-family: var(--text-mono);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--status-cobalt);
}

.telemetry-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ==========================================================================
   套餐价格对比表 (Pricing Blade Rack)
   参考网上真实机场/代理套餐规格与定价
   Micro-interactions:
   Pressing subscription card modules simulates analog mechanical lock-down
   (sliding down 2px with spring-loaded feedback while live activity LED diodes
    switch from dim amber to rapid-blinking emerald data streams).
   ========================================================================== */
.pricing-blade-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-blade-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2rem 2.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 6px 18px rgba(0, 0, 0, 0.05);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-spring);
  cursor: pointer;
  user-select: none;
}

.pricing-blade-card:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 12px 32px var(--status-cobalt-glow);
}

/* 模拟机械按压锁定微交互 (Mechanical Lock-Down on Press) */
.pricing-blade-card:active {
  transform: translateY(2px);
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.3), 0 2px 8px rgba(0,0,0,0.2);
}

/* 机械按下激活时，LED 由低功耗琥珀转为高速闪烁翡翠流 */
.pricing-blade-card:active .diode-status-node {
  background-color: var(--status-emerald);
  box-shadow: 0 0 10px var(--status-emerald);
  animation: dataStreamBlink 0.15s infinite alternate;
}

/* 旗舰高性价比推荐高亮 */
.pricing-blade-card.featured-blade {
  border: 2px solid var(--status-cobalt);
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 0 0 1px var(--status-cobalt), 0 14px 40px var(--status-cobalt-glow);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-blade-card.featured-blade:active {
  transform: scale(1.02) translateY(2px);
}

.rack-server-flag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-pill-bg);
  border: 1px solid var(--brand-pill-border);
  color: #fff;
  font-family: var(--text-mono);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.3rem 1.1rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
  white-space: nowrap;
}

.pricing-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.blade-tier-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.pricing-subtext {
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 2.8rem;
}

.price-display-chassis {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 1.5rem 0 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-chassis);
}

.currency-mark {
  font-family: var(--text-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--status-cobalt);
}

.price-number {
  font-family: var(--text-mono);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.billing-cycle {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pricing-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  margin-bottom: 2.25rem;
  flex-grow: 1;
}

.pricing-spec-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.pricing-spec-row svg {
  width: 17px;
  height: 17px;
  color: var(--status-emerald);
  flex-shrink: 0;
}

.emby-bonus-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.35);
  color: var(--status-emerald);
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
}

/* ==========================================================================
   用户评价 (Testimonial Blades)
   ========================================================================== */
.reviews-blade-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.review-blade-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.85rem;
  box-shadow: inset 0 1px 0 var(--border-highlight), 0 4px 12px rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.review-blade-card:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 8px 24px var(--status-cobalt-glow);
  transform: translateY(-3px);
}

.review-blade-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.review-rating-diodes {
  display: flex;
  gap: 0.25rem;
  color: var(--status-amber);
}
.review-rating-diodes svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.review-blade-text {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.reviewer-console-bio {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-chassis);
}

.reviewer-avatar-hex {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bevel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--status-cobalt);
}

.reviewer-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.reviewer-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   常见问题 (FAQ 1U Rack System)
   ========================================================================== */
.faq-chassis-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.faq-blade-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: inset 0 1px 0 var(--border-highlight);
  transition: all var(--transition-fast);
}

.faq-blade-item[open] {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 4px 16px var(--status-cobalt-glow);
}

.faq-blade-summary {
  padding: 1.35rem 1.65rem;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
  color: var(--text-primary);
}

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

.faq-arrow {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-blade-item[open] .faq-arrow {
  transform: rotate(180deg);
  color: var(--status-cobalt);
}

.faq-blade-answer {
  padding: 0 1.65rem 1.5rem;
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

/* ==========================================================================
   页脚 (Footer) - 严格保留 4 个标题，并在新窗口打开
   ========================================================================== */
.footer-chassis {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-chassis);
  padding: 3.5rem 0 2.5rem;
  position: relative;
}

.footer-four-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.footer-terminal-link {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-terminal-link:hover {
  color: var(--status-cobalt);
}

.footer-bottom-copy {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-chassis);
  font-size: 0.88rem;
  color: var(--text-muted);
  font-family: var(--text-mono);
}

/* ==========================================================================
   资讯/文章页专属样式 (Recommended Insights / Blog Layout)
   ========================================================================== */
.articles-rack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.article-blade-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.85rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: inset 0 1px 0 var(--border-highlight);
  position: relative;
}

.article-blade-card:hover {
  border-color: var(--status-cobalt);
  box-shadow: 0 0 0 1px var(--status-cobalt), 0 10px 28px var(--status-cobalt-glow);
  transform: translateY(-4px);
}

.article-meta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--text-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

.article-blade-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
}

.article-blade-card p {
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.68;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.article-action-link {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--status-cobalt);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
}

/* 长篇深度科普文章专用容器 (Article Detail Layout) */
.article-detail-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.article-breadcrumbs {
  font-family: var(--text-mono);
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.article-breadcrumbs a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.article-breadcrumbs a:hover {
  color: var(--status-cobalt);
}

.article-header-box {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-chassis);
  padding-bottom: 2rem;
}

.article-h1-title {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.28;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--text-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* 目录卡片 (Table of Contents / TOC) */
.article-toc-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-bevel);
  border-left: 4px solid var(--status-cobalt);
  border-radius: var(--radius-sm);
  padding: 1.75rem 2rem;
  margin: 2rem 0 3rem;
  position: relative;
}

.toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.toc-list li {
  font-size: 0.95rem;
}

.toc-list a {
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.toc-list a:hover {
  color: var(--status-cobalt);
  padding-left: 4px;
}

/* 文章正文排版 */
.article-body-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 3rem 0 1.25rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border-chassis);
  scroll-margin-top: 5.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.article-body-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 1rem;
  scroll-margin-top: 5.5rem;
}

.article-body-content p {
  margin-bottom: 1.5rem;
}

.article-body-content ul, .article-body-content ol {
  padding-left: 1.75rem;
  margin-bottom: 1.75rem;
}

.article-body-content li {
  margin-bottom: 0.6rem;
}

.article-body-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body-content a {
  color: var(--status-cobalt);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body-content a:hover {
  color: var(--status-cobalt-light);
}

/* 提示与高亮框 */
.article-callout {
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.98rem;
  line-height: 1.7;
}

.article-callout.success {
  background: rgba(0, 255, 136, 0.06);
  border-color: rgba(0, 255, 136, 0.3);
}

/* 数据对比表格 */
.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-chassis);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  background: var(--bg-surface);
}

.article-table th {
  background: var(--bg-surface-elevated);
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-chassis);
  white-space: nowrap;
}

.article-table td {
  padding: 0.95rem 1.25rem;
  border-bottom: 1px solid var(--border-chassis);
  color: var(--text-secondary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

/* 代码与配置块 */
.code-config-block {
  background: #090d16;
  color: #e2e8f0;
  font-family: var(--text-mono);
  font-size: 0.88rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  margin: 1.75rem 0;
  overflow-x: auto;
  border: 1px solid var(--border-bevel);
  line-height: 1.6;
}

/* 文章专属 FAQ 与 相关阅读 */
.article-faq-section {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 2px dashed var(--border-chassis);
}

.related-articles-section {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-chassis);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.related-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-chassis);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  border-color: var(--status-cobalt);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--status-cobalt-glow);
}

.related-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.related-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.related-card span {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--status-cobalt);
}

/* ==========================================================================
   响应式设计 (@media) - 手机端单栏与高触控面积适配
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-content-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .features-blade-grid,
  .pricing-blade-grid,
  .reviews-blade-grid,
  .articles-rack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-blade-card.featured-blade {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* 移动端隐藏横向菜单以保整洁 */
  }

  .hero-console-blade {
    padding: 2rem 1.5rem;
  }

  .hero-high-contrast-headline {
    font-size: 2.15rem;
  }

  .hero-sub-title-industrial {
    font-size: 1.35rem;
  }

  .features-blade-grid,
  .showcase-blade-grid,
  .pricing-blade-grid,
  .reviews-blade-grid,
  .articles-rack-grid {
    grid-template-columns: 1fr; /* 手机端单栏显示 */
    gap: 1.5rem;
  }

  .footer-four-nav {
    flex-direction: column;
    gap: 1.25rem;
  }

  .btn-blade-pill {
    min-height: 48px; /* 触控手指良好适配 */
    width: 100%;
  }

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

  .console-blade-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .blade-chassis-metrics {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
}