/* ===================================================================
   网际快车 FlashGet - 核心极速样式表 (Native Pure CSS)
   风格：科技暗色 #050807, 荧光薄荷绿 #59f7d6, 琥珀色 #f59e0b
   =================================================================== */

:root {
  --bg-primary: #050807;
  --bg-secondary: #0a110e;
  --bg-card: rgba(13, 24, 20, 0.72);
  --bg-card-hover: rgba(18, 36, 30, 0.88);
  --border-color: rgba(89, 247, 214, 0.16);
  --border-glow: rgba(89, 247, 214, 0.45);
  --accent-mint: #59f7d6;
  --accent-mint-dim: rgba(89, 247, 214, 0.15);
  --accent-amber: #f59e0b;
  --text-primary: #f0fdf9;
  --text-secondary: #94a8a0;
  --text-muted: #5e746b;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, Monaco, "Courier New", monospace;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-primary);
  min-height: 100vh;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

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

/* ===================================================================
   页眉导航 (Navbar)
   =================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(5, 8, 7, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(89, 247, 214, 0.2), rgba(89, 247, 214, 0.05));
  border: 1px solid var(--accent-mint);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(89, 247, 214, 0.25);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--accent-mint);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-sub {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--accent-mint);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  background: rgba(89, 247, 214, 0.08);
  border: 1px solid rgba(89, 247, 214, 0.3);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-mint);
  margin-left: 8px;
}

.live-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-mint);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-mint);
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.6; box-shadow: 0 0 4px var(--accent-mint); }
  50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 14px var(--accent-mint); }
  100% { transform: scale(0.9); opacity: 0.6; box-shadow: 0 0 4px var(--accent-mint); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-mint);
}

.nav-link.highlight {
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link.highlight::after {
  content: "HOT";
  font-size: 0.6rem;
  padding: 1px 4px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid var(--accent-amber);
  border-radius: 4px;
  color: var(--accent-amber);
  font-family: var(--font-mono);
}

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

/* ===================================================================
   按钮组件 (Buttons)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--accent-mint);
  color: #03140e;
  border: 1px solid var(--accent-mint);
  box-shadow: 0 0 20px rgba(89, 247, 214, 0.35);
}

.btn-primary:hover {
  background: #73f9dc;
  box-shadow: 0 0 32px rgba(89, 247, 214, 0.6);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(89, 247, 214, 0.4);
}

.btn-outline:hover {
  border-color: var(--accent-mint);
  color: var(--accent-mint);
  background: rgba(89, 247, 214, 0.08);
  box-shadow: 0 0 22px rgba(89, 247, 214, 0.25);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 15px 36px;
  font-size: 1.05rem;
}

/* 移动端菜单切换 */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--accent-mint);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
}

/* ===================================================================
   主视觉区 (Hero + Canvas)
   =================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 80px;
  padding-bottom: 60px;
}

#dataStreamCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: auto;
}

.hero-vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(5, 8, 7, 0.2) 0%, rgba(5, 8, 7, 0.85) 75%, var(--bg-primary) 100%),
              linear-gradient(to bottom, rgba(5, 8, 7, 0.3) 0%, transparent 20%, transparent 80%, var(--bg-primary) 100%);
}

.hero-content {
  position: relative;
  z-index: 5;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  pointer-events: none;
}

.hero-content a,
.hero-content button,
.hud-wrapper a,
.hud-wrapper button {
  pointer-events: auto;
}

.hero-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-mint);
  border: 1px solid rgba(89, 247, 214, 0.4);
  padding: 6px 16px;
  border-radius: 4px;
  background: rgba(89, 247, 214, 0.05);
  margin-bottom: 24px;
  box-shadow: 0 0 15px rgba(89, 247, 214, 0.15);
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 22px;
  color: #ffffff;
  text-shadow: 0 0 30px rgba(89, 247, 214, 0.2);
}

.hero-title .highlight-text {
  color: var(--accent-mint);
  text-shadow: 0 0 35px rgba(89, 247, 214, 0.6);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.interaction-hint {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.interaction-hint svg {
  width: 14px;
  height: 14px;
  fill: var(--accent-mint);
}

/* ===================================================================
   HUD 仪表盘 (速度监控 & 分片日志)
   =================================================================== */
.hud-speedometer {
  position: absolute;
  bottom: 28px;
  left: 28px;
  z-index: 10;
  background: rgba(5, 12, 10, 0.85);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  padding: 14px 20px;
  border-radius: 8px;
  font-family: var(--font-mono);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

.hud-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.hud-val-wrap {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.hud-speed-val {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-mint);
  text-shadow: 0 0 16px rgba(89, 247, 214, 0.5);
  min-width: 100px;
}

.hud-unit {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.hud-bar-bg {
  width: 160px;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 8px;
}

.hud-bar-fill {
  height: 100%;
  width: 78%;
  background: linear-gradient(90deg, var(--accent-mint), #38ef7d);
  box-shadow: 0 0 10px var(--accent-mint);
  transition: width 0.15s ease-out;
}

.hud-log-stream {
  position: absolute;
  bottom: 28px;
  right: 28px;
  z-index: 10;
  width: 320px;
  max-height: 120px;
  background: rgba(5, 12, 10, 0.85);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  padding: 12px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  pointer-events: none;
}

.hud-log-header {
  font-size: 0.65rem;
  color: var(--accent-amber);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed rgba(245, 158, 11, 0.25);
  padding-bottom: 4px;
}

.hud-log-list {
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
}

.hud-log-item {
  color: var(--text-secondary);
  white-space: nowrap;
  animation: fadeInLog 0.3s ease;
}

.hud-log-item .status-ok {
  color: var(--accent-mint);
  font-weight: 700;
}

.hud-log-item .status-amber {
  color: var(--accent-amber);
}

@keyframes fadeInLog {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===================================================================
   通用区块排版
   =================================================================== */
.section {
  padding: 100px 0;
  position: relative;
  z-index: 2;
}

.section-alt {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-mint);
  background: var(--accent-mint-dim);
  border: 1px solid var(--border-color);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================================================
   产品核心优势 (3个图文卡片)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 36px 30px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

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

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 25px rgba(89, 247, 214, 0.12);
}

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

.feature-icon-box {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: rgba(89, 247, 214, 0.08);
  border: 1px solid rgba(89, 247, 214, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.feature-icon-box svg {
  width: 30px;
  height: 30px;
  fill: var(--accent-mint);
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.feature-list {
  margin-top: 18px;
  list-style: none;
}

.feature-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.feature-list li svg {
  width: 14px;
  height: 14px;
  fill: var(--accent-mint);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体与AI支持卡片
   =================================================================== */
.unlock-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.unlock-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  position: relative;
  transition: all var(--transition-smooth);
}

.unlock-box:hover {
  border-color: var(--border-glow);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.unlock-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.unlock-badge.streaming {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber);
}

.unlock-badge.ai {
  background: rgba(89, 247, 214, 0.15);
  border: 1px solid rgba(89, 247, 214, 0.4);
  color: var(--accent-mint);
}

.unlock-box h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.unlock-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.service-tag:hover {
  background: rgba(89, 247, 214, 0.12);
  border-color: var(--accent-mint);
  color: var(--accent-mint);
}

.service-tag svg {
  width: 16px;
  height: 16px;
}

/* ===================================================================
   价格套餐表 (Pricing Table)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5), 0 0 30px rgba(89, 247, 214, 0.12);
}

.pricing-card.featured {
  border-color: var(--accent-mint);
  background: linear-gradient(180deg, rgba(89, 247, 214, 0.1) 0%, rgba(10, 22, 18, 0.8) 100%);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(89, 247, 214, 0.2);
}

.featured-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-mint);
  color: #03140e;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.pricing-tier-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.pricing-tier-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  min-height: 38px;
}

.pricing-price-wrap {
  margin: 24px 0 20px 0;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.currency {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-mint);
  vertical-align: super;
}

.price-number {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-primary);
  font-family: var(--font-mono);
  letter-spacing: -1px;
}

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

.pricing-specs {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-specs li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.pricing-specs li svg {
  width: 16px;
  height: 16px;
  fill: var(--accent-mint);
  flex-shrink: 0;
}

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

/* ===================================================================
   用户评价 (Testimonials)
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 30px;
  transition: all var(--transition-smooth);
}

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

.testimonial-stars {
  color: #ffb800;
  margin-bottom: 14px;
  letter-spacing: 2px;
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

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

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(89, 247, 214, 0.3), rgba(245, 158, 11, 0.3));
  border: 1px solid var(--accent-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.user-meta-name {
  font-size: 0.95rem;
  font-weight: 700;
}

.user-meta-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===================================================================
   常见问题解答 (FAQ)
   =================================================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(89, 247, 214, 0.3);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  outline: none;
}

.faq-icon {
  font-size: 1.2rem;
  color: var(--accent-mint);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 22px;
}

/* ===================================================================
   页脚 (Footer) - 严格只保留 4 个链接并新窗口打开
   =================================================================== */
.site-footer {
  background: #020403;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 40px 0;
  position: relative;
  z-index: 2;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 32px;
}

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

.footer-link {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-mint);
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ===================================================================
   资讯列表与内容页公共样式
   =================================================================== */
.page-hero {
  padding-top: 130px;
  padding-bottom: 50px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(180deg, rgba(89, 247, 214, 0.05) 0%, transparent 100%);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-smooth);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(89, 247, 214, 0.1);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-mint);
  margin-bottom: 12px;
}

.article-title-link {
  font-size: 1.28rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: block;
}

.article-title-link:hover {
  color: var(--accent-mint);
}

.article-excerpt {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.article-readmore {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--accent-mint);
}

.article-readmore:hover {
  text-decoration: underline;
}

/* 资讯正文排版 */
.article-detail-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 0 100px 0;
}

.article-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 30px;
}

.article-header h1 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.article-body {
  color: #cfdcd5;
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.6rem;
  color: var(--text-primary);
  margin: 48px 0 20px 0;
  border-left: 4px solid var(--accent-mint);
  padding-left: 14px;
}

.article-body h3 {
  font-size: 1.3rem;
  color: var(--accent-mint);
  margin: 32px 0 16px 0;
}

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

.article-body ul, .article-body ol {
  margin: 16px 0 24px 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body blockquote {
  border-left: 3px solid var(--accent-amber);
  background: rgba(245, 158, 11, 0.08);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  font-style: normal;
  color: #e2e8f0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.92rem;
}

.article-body th, .article-body td {
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-body th {
  background: rgba(89, 247, 214, 0.1);
  color: var(--accent-mint);
}

.article-cta-box {
  margin-top: 60px;
  background: linear-gradient(135deg, rgba(89, 247, 214, 0.12), rgba(10, 22, 18, 0.95));
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

/* ===================================================================
   响应式断点适配 (@media)
   =================================================================== */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(5, 8, 7, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    align-items: flex-start;
  }
  .nav-links.open {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .header-cta .btn {
    padding: 8px 14px;
    font-size: 0.8rem;
  }
  .unlock-wrapper {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .hud-speedometer {
    bottom: 16px;
    left: 16px;
    padding: 10px 14px;
  }
  .hud-speed-val {
    font-size: 1.4rem;
  }
  .hud-log-stream {
    display: none; /* 移动端精简 HUD 空间 */
  }
  .footer-links {
    flex-direction: column;
    gap: 16px;
  }
}