/* ===================================================================
   飞兔云 (FeiTuYun) - Cyberpunk Stealth Terminal Web UI
   “Follow the White Rabbit” 地下狡兔拓扑潜行穿透矩阵
   纯原生CSS · 零重型依赖 · 磷光翡翠绿 · CRT扫频线 · 极客等宽字体
   =================================================================== */

:root {
  /* 基础暗黑隐身色系 (Deep Stealth Pitch-Black - 核心主色调) */
  --bg-canvas: #050608;
  --bg-surface: #0a0d14;
  --bg-surface-elevated: #101522;
  --bg-surface-hover: #151c2d;
  --bg-panel: rgba(10, 13, 20, 0.85);

  /* 磷光荧光与战术色彩 */
  --phosphor-green: #00ff66;
  --phosphor-green-glow: rgba(0, 255, 102, 0.4);
  --phosphor-green-subtle: rgba(0, 255, 102, 0.12);
  --chalk-white: #ededed;
  --white-pure: #ffffff;
  --tactical-cyan: #00e5ff;
  --tactical-cyan-subtle: rgba(0, 229, 255, 0.12);
  --tactical-red: #ff334b;
  --tactical-red-glow: rgba(255, 51, 75, 0.4);
  --tactical-amber: #ffb800;

  /* 线框与边界 */
  --wireframe-border: rgba(0, 255, 102, 0.22);
  --wireframe-border-bright: rgba(0, 255, 102, 0.65);
  --wireframe-border-subtle: rgba(255, 255, 255, 0.08);

  /* 文字颜色 */
  --text-main: #ededed;
  --text-muted: #8492a6;
  --text-dim: #4d5b6e;
  --text-phosphor: #00ff66;

  /* 战术等宽字体体系 */
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* 阴影与辉光 */
  --glow-emerald: 0 0 16px rgba(0, 255, 102, 0.35);
  --glow-emerald-strong: 0 0 28px rgba(0, 255, 102, 0.7);
  --glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
  --glow-red: 0 0 20px rgba(255, 51, 75, 0.55);

  /* 圆角：微圆角线框（摒弃圆润卡片，强化工程线框感） */
  --radius-tactical: 4px;
  --radius-panel: 6px;

  /* 动画过渡 */
  --ease-terminal: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 战术浅色线框模式（Tactical Blueprint Light Mode） */
[data-theme="light"] {
  --bg-canvas: #f2f5f8;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #e8eef4;
  --bg-surface-hover: #dfe7ef;
  --bg-panel: rgba(255, 255, 255, 0.92);

  --phosphor-green: #00993d;
  --phosphor-green-glow: rgba(0, 153, 61, 0.25);
  --phosphor-green-subtle: rgba(0, 153, 61, 0.08);
  --chalk-white: #0a0d14;
  --tactical-cyan: #0284c7;
  --tactical-cyan-subtle: rgba(2, 132, 199, 0.08);
  --tactical-red: #e11d48;
  --tactical-red-glow: rgba(225, 29, 72, 0.3);

  --wireframe-border: rgba(0, 153, 61, 0.28);
  --wireframe-border-bright: rgba(0, 153, 61, 0.75);
  --wireframe-border-subtle: rgba(0, 0, 0, 0.12);

  --text-main: #0a0d14;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --text-phosphor: #008033;

  --glow-emerald: 0 0 10px rgba(0, 153, 61, 0.2);
  --glow-emerald-strong: 0 0 18px rgba(0, 153, 61, 0.35);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 15px;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.25s var(--ease-terminal), color 0.25s var(--ease-terminal);
}

/* ===================================================================
   CRT 阴极射线管 60FPS 扫频线滤镜 (CRT Cathode Scanline Effect)
   =================================================================== */
.crt-scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.25) 50%
  );
  background-size: 100% 4px;
  opacity: 0.7;
}

[data-theme="light"] .crt-scanlines {
  opacity: 0.15;
}

/* 垂直扫光动态束线 */
.crt-beam {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 255, 102, 0.04) 50%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 9998;
  animation: crtScan 7s linear infinite;
}

@keyframes crtScan {
  0% { transform: translateY(-120px); }
  100% { transform: translateY(100vh); }
}

/* 容器与辅助排版 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.mono-text {
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

/* ===================================================================
   顶部战术导航栏 (Tactical Header & Navigation)
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--wireframe-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--chalk-white);
}

.brand-glyph {
  width: 36px;
  height: 36px;
  border: 1px solid var(--phosphor-green);
  border-radius: var(--radius-tactical);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--phosphor-green-subtle);
  color: var(--phosphor-green);
  box-shadow: var(--glow-emerald);
  position: relative;
  overflow: hidden;
}

.brand-name {
  color: var(--chalk-white);
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-phosphor);
}

.brand-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-tactical);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.nav-link .nav-index {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-phosphor);
  border-color: var(--wireframe-border);
  background: var(--phosphor-green-subtle);
  box-shadow: var(--glow-emerald);
}

.nav-link:hover .nav-index,
.nav-link.active .nav-index {
  color: var(--text-phosphor);
}

/* 推荐资讯高亮徽标 */
.nav-link.nav-intel {
  color: var(--tactical-cyan);
  border-color: rgba(0, 229, 255, 0.3);
}

.nav-link.nav-intel:hover {
  background: var(--tactical-cyan-subtle);
  box-shadow: var(--glow-cyan);
}

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

/* ===================================================================
   战术级昼夜模式切换器 (Tactical Mode Toggle)
   =================================================================== */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-tactical);
  cursor: pointer;
  transition: all 0.25s var(--ease-terminal);
}

.theme-toggle-btn:hover {
  color: var(--text-phosphor);
  border-color: var(--phosphor-green);
  box-shadow: var(--glow-emerald);
}

.theme-toggle-btn svg {
  width: 16px;
  height: 16px;
}

.icon-sun { display: none; }
.icon-moon { display: block; color: var(--phosphor-green); }

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

/* 移动端汉堡菜单 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-tactical);
  border: 1px solid var(--wireframe-border);
  background: var(--bg-surface);
  padding: 8px;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--phosphor-green);
}

/* ===================================================================
   战术线框按钮 (Tactical Wireframe Buttons & CTA)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  border-radius: var(--radius-tactical);
  padding: 10px 22px;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.03em;
  transition: all 0.2s var(--ease-terminal);
  text-align: center;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--phosphor-green);
  color: #050608 !important;
  border: 1px solid var(--phosphor-green);
  box-shadow: var(--glow-emerald);
}

.btn-primary:hover {
  background: #26ff7b;
  box-shadow: var(--glow-emerald-strong);
  transform: translateY(-2px);
}

.btn-wireframe {
  background: var(--bg-surface);
  color: var(--text-phosphor) !important;
  border: 1px solid var(--wireframe-border-bright);
}

.btn-wireframe:hover {
  background: var(--phosphor-green-subtle);
  border-color: var(--phosphor-green);
  box-shadow: var(--glow-emerald);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
  height: 36px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.02rem;
  height: 52px;
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   主视觉区 (Subterranean Terminal Hero Section)
   =================================================================== */
.hero-matrix {
  position: relative;
  padding: 40px 0 50px;
  border-bottom: 1px solid var(--wireframe-border-subtle);
  overflow: hidden;
}

/* 顶部系统遥测条 */
.telemetry-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-tactical);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 12px;
}

.telemetry-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--phosphor-green);
  border-radius: 50%;
  box-shadow: var(--glow-emerald);
  animation: pulseNeon 1.5s infinite;
}

@keyframes pulseNeon {
  0% { box-shadow: 0 0 0 0 rgba(0, 255, 102, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(0, 255, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 255, 102, 0); }
}

/* 紧急熔断断网开关 (Tactical Kill-Switch) */
.kill-switch-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kill-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 51, 75, 0.12);
  border: 1px solid var(--tactical-red);
  color: var(--tactical-red);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-tactical);
  cursor: pointer;
  transition: all 0.2s ease;
}

.kill-switch-btn:hover {
  background: var(--tactical-red);
  color: #ffffff;
  box-shadow: var(--glow-red);
}

.kill-switch-btn.severed {
  background: var(--tactical-red);
  color: #ffffff;
  animation: alarmPulse 1s infinite;
}

@keyframes alarmPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* 主视觉区标题与简介 */
.hero-head-wrap {
  text-align: center;
  max-width: 900px;
  margin: 0 auto 36px;
}

.hero-classified-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-phosphor);
  background: var(--phosphor-green-subtle);
  border: 1px solid var(--wireframe-border);
  padding: 4px 14px;
  border-radius: var(--radius-tactical);
  margin-bottom: 20px;
  letter-spacing: 0.08em;
}

.hero-main-title {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  color: var(--chalk-white);
}

.hero-main-title .brand-highlight {
  color: var(--text-phosphor);
  text-shadow: var(--glow-emerald);
}

.hero-brief {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 760px;
  margin: 0 auto 32px;
}

.hero-action-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* ===================================================================
   地下狡兔拓扑管网交互主画布 (Subterranean Tunnel Vector Canvas)
   =================================================================== */
.tunnel-schematic-panel {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  margin: 40px auto 20px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.tunnel-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--wireframe-border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tunnel-canvas-box {
  position: relative;
  width: 100%;
  height: 480px;
  background: radial-gradient(circle at center, #090e18 0%, #050608 100%);
  cursor: crosshair;
}

[data-theme="light"] .tunnel-canvas-box {
  background: radial-gradient(circle at center, #edf4fa 0%, #f2f5f8 100%);
}

#tunnelCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* 画布上方 HUD 浮动指引 */
.canvas-hud-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-phosphor);
  background: rgba(5, 6, 8, 0.85);
  border: 1px solid var(--wireframe-border);
  padding: 8px 12px;
  border-radius: var(--radius-tactical);
  z-index: 10;
}

.canvas-lockon-notify {
  position: absolute;
  bottom: 18px;
  right: 18px;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--tactical-cyan);
  background: rgba(5, 6, 8, 0.9);
  border: 1px solid var(--tactical-cyan);
  padding: 10px 16px;
  border-radius: var(--radius-tactical);
  box-shadow: var(--glow-cyan);
  z-index: 10;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.canvas-lockon-notify.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 底部实时编译路由跃点日志流 (Live Monospace Terminal Code Stream) */
.terminal-stream-bar {
  background: #020305;
  border-top: 1px solid var(--wireframe-border-subtle);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
  white-space: nowrap;
}

.stream-label {
  color: var(--text-phosphor);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.stream-content {
  color: var(--chalk-white);
  overflow: hidden;
  text-overflow: ellipsis;
  animation: textFlicker 4s infinite alternate;
}

@keyframes textFlicker {
  0%, 100% { opacity: 1; }
  45% { opacity: 0.95; }
  50% { opacity: 0.75; }
}

/* ===================================================================
   板块通用线框排版 (Sections & Headers)
   =================================================================== */
.section {
  padding: 80px 0;
  position: relative;
  border-bottom: 1px solid var(--wireframe-border-subtle);
}

.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 52px;
}

.section-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-phosphor);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
}

.section-h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--chalk-white);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   产品核心优势介绍 (3个图文线框卡片)
   =================================================================== */
.cards-trio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.wireframe-card {
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  padding: 34px 28px;
  position: relative;
  transition: all 0.25s var(--ease-terminal);
  overflow: hidden;
}

.wireframe-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--phosphor-green), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.wireframe-card:hover {
  transform: translateY(-5px);
  border-color: var(--phosphor-green);
  box-shadow: var(--glow-emerald);
}

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

.card-tactical-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.card-vector-icon {
  width: 52px;
  height: 52px;
  border: 1px solid var(--wireframe-border-bright);
  border-radius: var(--radius-tactical);
  background: var(--phosphor-green-subtle);
  color: var(--text-phosphor);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-burrow-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  border: 1px solid var(--wireframe-border-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-tactical);
}

.card-h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 12px;
}

.card-body-text {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 22px;
}

.wireframe-specs-list {
  border-top: 1px dashed var(--wireframe-border-subtle);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.spec-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.spec-line svg {
  width: 14px;
  height: 14px;
  color: var(--text-phosphor);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体 & AI 支持特色图卡 (Subterranean Media & AI Bypass)
   =================================================================== */
.showcase-dual-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.bypass-card {
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.25s var(--ease-terminal);
}

.bypass-card:hover {
  transform: translateY(-4px);
  border-color: var(--tactical-cyan);
  box-shadow: var(--glow-cyan);
}

.bypass-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-tactical);
  margin-bottom: 18px;
  width: fit-content;
}

.bypass-streaming .bypass-badge {
  background: rgba(255, 51, 75, 0.12);
  border: 1px solid var(--tactical-red);
  color: var(--tactical-red);
}

.bypass-ai .bypass-badge {
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid var(--tactical-cyan);
  color: var(--tactical-cyan);
}

.bypass-h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 12px;
}

.bypass-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.tactical-pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tactical-pill {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-tactical);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--wireframe-border-subtle);
  color: var(--chalk-white);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.tactical-pill:hover {
  border-color: var(--phosphor-green);
  color: var(--text-phosphor);
}

/* ===================================================================
   清晰的套餐价格对比表 (参考网上真实机场/网络专线套餐)
   =================================================================== */
.pricing-matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.pricing-wire-card {
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  padding: 38px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s var(--ease-terminal);
}

.pricing-wire-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glow-emerald);
}

.pricing-wire-card.recommended {
  border: 2px solid var(--phosphor-green);
  box-shadow: var(--glow-emerald-strong);
  background: linear-gradient(180deg, rgba(0, 255, 102, 0.05) 0%, var(--bg-surface) 100%);
}

.rec-banner {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--phosphor-green);
  color: #050608;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 900;
  padding: 3px 14px;
  border-radius: var(--radius-tactical);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.pricing-plan-head {
  text-align: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--wireframe-border-subtle);
  margin-bottom: 24px;
}

.plan-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 6px;
}

.plan-summary {
  font-size: 0.86rem;
  color: var(--text-muted);
  min-height: 42px;
}

.plan-price-tag {
  margin: 16px 0 6px;
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.price-currency {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-phosphor);
}

.price-val {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--chalk-white);
  line-height: 1;
}

.price-term {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-left: 4px;
}

.plan-pill-discount {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-phosphor);
  background: var(--phosphor-green-subtle);
  border: 1px solid var(--wireframe-border);
  padding: 2px 10px;
  border-radius: var(--radius-tactical);
}

.plan-specs {
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-bottom: 30px;
  flex-grow: 1;
}

.spec-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-main);
}

.spec-row svg {
  width: 16px;
  height: 16px;
  color: var(--text-phosphor);
  flex-shrink: 0;
  margin-top: 3px;
}

.spec-row.disabled {
  color: var(--text-dim);
  text-decoration: line-through;
}

.spec-row.disabled svg {
  color: var(--text-dim);
}

/* ===================================================================
   用户评价 (User Reviews)
   =================================================================== */
.reviews-tactical-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-wire-card {
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s var(--ease-terminal);
}

.review-wire-card:hover {
  border-color: var(--phosphor-green);
  transform: translateY(-4px);
  box-shadow: var(--glow-emerald);
}

.review-cipher-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.review-quote {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.review-author-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--wireframe-border-subtle);
  padding-top: 16px;
}

.avatar-callsign {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-tactical);
  background: var(--phosphor-green-subtle);
  border: 1px solid var(--wireframe-border);
  color: var(--text-phosphor);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.9rem;
}

.author-meta-box {
  display: flex;
  flex-direction: column;
}

.author-callsign-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--chalk-white);
}

.author-tactical-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ===================================================================
   常见问题解答 (FAQ Accordion)
   =================================================================== */
.faq-wire-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-wire-item {
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-tactical);
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-wire-item:hover {
  border-color: var(--phosphor-green);
}

.faq-wire-btn {
  width: 100%;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--chalk-white);
  background: transparent;
  cursor: pointer;
}

.faq-wire-btn:hover {
  color: var(--text-phosphor);
}

.faq-toggle-icon {
  width: 18px;
  height: 18px;
  color: var(--text-phosphor);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-wire-item.active .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-wire-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease-terminal);
  padding: 0 22px;
}

.faq-wire-item.active .faq-wire-drawer {
  max-height: 280px;
  padding-bottom: 20px;
}

.faq-wire-drawer p {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===================================================================
   页脚 (Footer) - 严格只保留四个专用标题
   =================================================================== */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--wireframe-border);
  padding: 48px 0 32px;
  margin-top: 60px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 6px 14px;
  border: 1px solid var(--wireframe-border-subtle);
  border-radius: var(--radius-tactical);
  transition: all 0.2s ease;
}

.footer-link:hover {
  color: var(--text-phosphor);
  border-color: var(--phosphor-green);
  background: var(--phosphor-green-subtle);
  box-shadow: var(--glow-emerald);
}

.footer-bottom {
  text-align: center;
  border-top: 1px dashed var(--wireframe-border-subtle);
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.footer-domain {
  color: var(--text-phosphor);
}

/* ===================================================================
   独立内容页（关于我们、服务条款、隐私政策、网站地图、推荐资讯）通用样式
   =================================================================== */
.article-tactical-container {
  max-width: 900px;
  margin: 40px auto 80px;
  background: var(--bg-surface);
  border: 1px solid var(--wireframe-border);
  border-radius: var(--radius-panel);
  padding: 44px 38px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.article-hero {
  padding: 50px 0 30px;
  text-align: center;
  border-bottom: 1px solid var(--wireframe-border-subtle);
}

.article-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--chalk-white);
  margin-bottom: 12px;
}

.article-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
}

.tactical-section-block {
  margin-bottom: 36px;
}

.tactical-section-block:last-child {
  margin-bottom: 0;
}

.tactical-h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--wireframe-border-subtle);
}

.tactical-h2 svg {
  width: 20px;
  height: 20px;
  color: var(--text-phosphor);
}

.tactical-p {
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.tactical-ul {
  list-style: none;
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tactical-ul li {
  position: relative;
  padding-left: 20px;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.tactical-ul li::before {
  content: '>';
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  color: var(--text-phosphor);
  font-weight: 800;
}

.alert-terminal-box {
  background: var(--phosphor-green-subtle);
  border: 1px solid var(--wireframe-border);
  padding: 16px 20px;
  border-radius: var(--radius-tactical);
  margin: 20px 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-main);
}

.alert-terminal-box.warning {
  background: rgba(255, 51, 75, 0.08);
  border-color: var(--tactical-red);
  color: var(--chalk-white);
}

/* 资讯专栏特有排版 */
.intel-article-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--wireframe-border-subtle);
  border-radius: var(--radius-tactical);
  padding: 24px;
  margin-bottom: 24px;
  transition: all 0.2s ease;
}

.intel-article-card:hover {
  border-color: var(--tactical-cyan);
  box-shadow: var(--glow-cyan);
}

.intel-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--tactical-cyan);
  margin-bottom: 10px;
}

.intel-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 10px;
}

.intel-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 资讯与文章长篇深度排版 (In-depth Long-form Article Styles) */
.article-toc {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--wireframe-border);
  border-left: 3px solid var(--phosphor-green);
  border-radius: var(--radius-tactical);
  padding: 20px 24px;
  margin: 28px 0 36px;
}

.article-toc-title {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-phosphor);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-toc-item a {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.article-toc-item a:hover {
  color: var(--text-phosphor);
  transform: translateX(4px);
}

.article-toc-num {
  color: var(--text-dim);
  font-size: 0.78rem;
}

.related-reads-box {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px dashed var(--wireframe-border-subtle);
}

.related-reads-title {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--chalk-white);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-reads-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-read-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--wireframe-border-subtle);
  border-radius: var(--radius-tactical);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  transition: all 0.2s ease;
}

.related-read-item:hover {
  border-color: var(--phosphor-green);
  box-shadow: var(--glow-emerald);
  transform: translateY(-2px);
}

.related-read-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--chalk-white);
  line-height: 1.5;
}

.related-read-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-phosphor);
}

.intext-link {
  color: var(--text-phosphor);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 700;
  transition: all 0.2s ease;
}

.intext-link:hover {
  color: #26ff7b;
  text-shadow: var(--glow-emerald);
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.88rem;
  font-family: var(--font-mono);
}

.tech-table th, .tech-table td {
  border: 1px solid var(--wireframe-border-subtle);
  padding: 10px 14px;
  text-align: left;
}

.tech-table th {
  background: var(--bg-surface-elevated);
  color: var(--text-phosphor);
  font-weight: 800;
}

.tech-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

/* ===================================================================
   响应式媒体查询 (@media queries) - 移动端完美单栏适配
   =================================================================== */
@media (max-width: 1024px) {
  .hero-main-title {
    font-size: 2.4rem;
  }
  .cards-trio-grid,
  .pricing-matrix-grid,
  .reviews-tactical-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .nav-inner {
    height: 60px;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--wireframe-border);
    flex-direction: column;
    padding: 20px;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease-terminal), opacity 0.3s ease;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-matrix {
    padding: 30px 0 40px;
  }

  .hero-main-title {
    font-size: 1.9rem;
  }

  .hero-brief {
    font-size: 0.98rem;
  }

  .tunnel-canvas-box {
    height: 360px;
  }

  .cards-trio-grid,
  .showcase-dual-grid,
  .pricing-matrix-grid,
  .reviews-tactical-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .wireframe-card,
  .bypass-card,
  .pricing-wire-card,
  .review-wire-card {
    padding: 26px 20px;
  }

  .btn {
    width: 100%;
    height: 48px;
    font-size: 0.95rem;
  }

  .hero-action-row {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }

  .article-tactical-container {
    padding: 24px 18px;
    margin: 20px auto 50px;
  }
}