/* ==========================================================================
   FSCloud 极速终端网络加速服务 - 原生轻量 CSS 样式表
   风格：极简黑客终端 (Cyberpunk Terminal / Dev Console)
   配色：#0d1117 (终端深黑), #00ff66 / #39d353 (终端荧光绿), #58a6ff (命令蓝), #8b949e (注释灰)
   特性：秒开级加载、零外部依赖、响应式栅格、CRT 扫描纹理
   ========================================================================== */

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --border-highlight: #39d353;
  --text-main: #c9d1d9;
  --text-muted: #8b949e;
  --term-green: #39d353;
  --term-cyan: #58a6ff;
  --term-amber: #d29922;
  --term-purple: #bc8cff;
  --term-red: #f85149;
  --font-mono: "JetBrains Mono", Consolas, "Fira Code", Monaco, Menlo, "Courier New", Courier, monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
}

body {
  font-family: var(--font-mono);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* CRT 扫描线微妙背景效果 */
body::before {
  content: " ";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
  z-index: 999;
  background-size: 100% 3px, 6px 100%;
  pointer-events: none;
  opacity: 0.7;
}

/* 链接全局重置 */
a {
  color: var(--term-green);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: #7ee787;
  text-decoration: underline;
}

/* 容器限制 */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==================== 顶部导航 ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(13, 17, 23, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
}

.brand-prompt {
  color: var(--term-green);
  user-select: none;
}

.glitch-text {
  position: relative;
  display: inline-block;
  color: #ffffff;
}

.glitch-text:hover {
  text-shadow: 2px 0 var(--term-cyan), -2px 0 var(--term-green);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 22px;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 6px 8px;
  border-radius: 4px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--term-green);
  text-decoration: none;
  background-color: var(--bg-tertiary);
}

.nav-badge {
  background-color: rgba(210, 153, 34, 0.15);
  color: var(--term-amber);
  border: 1px solid rgba(210, 153, 34, 0.3);
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 4px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==================== 按钮通用设计 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  min-height: 44px;
  text-align: center;
}

.btn-primary {
  background-color: #238636;
  border-color: rgba(240, 246, 252, 0.1);
  color: #ffffff;
  box-shadow: 0 0 10px rgba(46, 160, 67, 0.25);
}

.btn-primary:hover {
  background-color: #2ea043;
  color: #ffffff;
  text-decoration: none;
  box-shadow: 0 0 16px rgba(46, 160, 67, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--term-cyan);
}

.btn-outline:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--term-cyan);
  color: #79c0ff;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-pbn {
  background-color: rgba(88, 166, 255, 0.1);
  border: 1px solid var(--term-cyan);
  color: var(--term-cyan);
}

.btn-pbn:hover {
  background-color: rgba(88, 166, 255, 0.2);
  color: #ffffff;
  text-decoration: none;
  box-shadow: 0 0 14px rgba(88, 166, 255, 0.35);
  transform: translateY(-1px);
}

/* ==================== Hero 主视觉区 ==================== */
.hero-section {
  padding: 56px 0 36px 0;
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 36px;
  align-items: center;
}

.hero-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--term-green);
  background-color: rgba(57, 211, 83, 0.1);
  border: 1px solid rgba(57, 211, 83, 0.25);
  padding: 4px 10px;
  border-radius: 4px;
  width: fit-content;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--term-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--term-green);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px var(--term-green); }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 2.45rem;
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-title .highlight {
  color: var(--term-green);
  text-shadow: 0 0 12px rgba(57, 211, 83, 0.35);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--term-cyan);
  font-weight: 500;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.hero-meta-tips {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-meta-tips span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==================== 仿真终端交互窗口 ==================== */
.terminal-window {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 160, 67, 0.08);
}

.terminal-header {
  background-color: var(--bg-tertiary);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 7px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.terminal-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.terminal-status-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 3px;
  background-color: rgba(57, 211, 83, 0.15);
  color: var(--term-green);
  border: 1px solid rgba(57, 211, 83, 0.3);
}

.terminal-status-badge.protected {
  background-color: rgba(57, 211, 83, 0.25);
  color: #7ee787;
  font-weight: 700;
  box-shadow: 0 0 10px rgba(57, 211, 83, 0.4);
}

.terminal-body {
  padding: 16px;
  font-size: 0.88rem;
  min-height: 290px;
  max-height: 380px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.terminal-log {
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

.log-cmd {
  color: var(--text-main);
}

.log-cmd .prompt {
  color: var(--term-green);
  margin-right: 6px;
  font-weight: 700;
}

.log-res-success {
  color: var(--term-green);
}

.log-res-info {
  color: var(--term-cyan);
}

.log-res-muted {
  color: var(--text-muted);
}

.log-res-warn {
  color: var(--term-amber);
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.terminal-input {
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #ffffff;
  flex: 1;
}

.cursor-blink {
  display: inline-block;
  width: 8px;
  height: 15px;
  background-color: var(--term-green);
  animation: cursorBlink 1s infinite;
  vertical-align: middle;
}

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

/* ==================== 统一板块通用头 ==================== */
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-title-wrap {
  margin-bottom: 36px;
}

.section-comment {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.85rem;
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title .prefix {
  color: var(--term-green);
}

/* ==================== 核心优势卡片 (3个图文卡片) ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--term-green);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 16px rgba(57, 211, 83, 0.12);
}

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

.feature-icon-box {
  width: 44px;
  height: 44px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--term-green);
}

.feature-code-tag {
  font-size: 0.72rem;
  color: var(--term-cyan);
  background-color: rgba(88, 166, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

.feature-card h3 {
  font-size: 1.15rem;
  color: #ffffff;
  font-weight: 600;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.feature-meta-list {
  list-style: none;
  font-size: 0.82rem;
  color: var(--term-green);
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--border-color);
}

.feature-meta-list li::before {
  content: "✔ ";
  color: var(--term-green);
}

/* ==================== 流媒体与 AI 支持图卡 ==================== */
.unlock-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.unlock-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
}

.unlock-box h3 {
  font-size: 1.15rem;
  color: #ffffff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.service-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.service-pill:hover {
  border-color: var(--term-cyan);
  background-color: rgba(88, 166, 255, 0.12);
  color: #ffffff;
}

.pill-dot {
  width: 6px;
  height: 6px;
  background-color: var(--term-green);
  border-radius: 50%;
}

/* ==================== 定价表格 (终端表格设计) ==================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.pricing-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.pricing-card.popular {
  border-color: var(--term-green);
  box-shadow: 0 0 20px rgba(57, 211, 83, 0.15);
}

.popular-ribbon {
  position: absolute;
  top: 14px;
  right: 14px;
  background-color: var(--term-green);
  color: #0d1117;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 3px;
}

.plan-header {
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 18px;
  margin-bottom: 18px;
}

.plan-tag {
  color: var(--term-cyan);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.plan-name {
  font-size: 1.35rem;
  color: #ffffff;
  margin: 4px 0 10px 0;
}

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

.plan-price .currency {
  font-size: 1.2rem;
  color: var(--term-green);
}

.plan-price .amount {
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
}

.plan-price .cycle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  font-size: 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  flex: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.plan-features li span.check {
  color: var(--term-green);
}

.pricing-card .btn {
  width: 100%;
}

/* ==================== 用户真实评价 ==================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.reviewer-id {
  font-size: 0.85rem;
  color: var(--term-cyan);
}

.review-stars {
  color: var(--term-amber);
  font-size: 0.85rem;
}

.review-body {
  font-size: 0.88rem;
  color: var(--text-main);
  line-height: 1.6;
}

.review-footer {
  margin-top: auto;
  font-size: 0.76rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
  display: flex;
  justify-content: space-between;
}

/* ==================== 常见问题解答 (FAQ) ==================== */
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.faq-question {
  padding: 16px 20px;
  font-size: 0.98rem;
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question:hover {
  background-color: var(--bg-tertiary);
  color: var(--term-green);
}

.faq-answer {
  padding: 0 20px 16px 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==================== 页脚规范 (只保留四个特定标题) ==================== */
.site-footer {
  background-color: #090d13;
  border-top: 1px solid var(--border-color);
  padding: 40px 0 30px 0;
  margin-top: 40px;
}

.footer-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
  gap: 36px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-nav-list a {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.footer-nav-list a:hover {
  color: var(--term-green);
  background-color: var(--bg-tertiary);
  text-decoration: none;
}

.footer-copyright {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(48, 54, 61, 0.4);
  padding-top: 20px;
}

.footer-domain {
  color: var(--term-cyan);
}

/* ==================== 资讯文章页面专用样式 ==================== */
.article-header {
  padding: 40px 0 24px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 30px;
}

.article-breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-breadcrumb a {
  color: var(--term-cyan);
}

.article-title {
  font-size: 2.1rem;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.article-content {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-main);
  max-width: 860px;
}

.article-content h2 {
  font-size: 1.45rem;
  color: #ffffff;
  margin: 32px 0 14px 0;
  border-left: 3px solid var(--term-green);
  padding-left: 12px;
}

.article-content h3 {
  font-size: 1.2rem;
  color: #e6edf3;
  margin: 24px 0 10px 0;
}

.article-content p {
  margin-bottom: 16px;
}

.article-content ul, .article-content ol {
  margin: 0 0 18px 24px;
}

.article-content li {
  margin-bottom: 6px;
}

.article-content blockquote {
  border-left: 3px solid var(--term-cyan);
  background-color: var(--bg-secondary);
  padding: 14px 18px;
  margin: 20px 0;
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
}

.article-content a {
  font-weight: 600;
  text-decoration: underline;
}

.article-cta-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--term-green);
  border-radius: 8px;
  padding: 24px;
  margin: 36px 0;
  text-align: center;
}

/* ==================== 响应式设计 (媒体查询 @media) ==================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .unlock-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 10px 0;
  }
  .nav-wrap {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .nav-links {
    flex-wrap: wrap;
    gap: 10px;
    width: 100%;
  }
  .header-cta {
    width: 100%;
    margin-top: 4px;
  }
  .header-cta .btn {
    width: 100%;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section-title {
    font-size: 1.45rem;
  }
  .footer-nav-list {
    flex-direction: column;
    gap: 14px;
    align-items: center;
  }
  .terminal-body {
    min-height: 240px;
  }
}