/* ====================================================================
   CyberGuard机场 (cyberguard.living) — 全站核心视觉规范与样式系统 (style.css)
   世界观：雪国温泉旅馆 (Snow Country Ryokan)
   画风：蓝图线稿 (Blueprint Line Art)
   版式原型：游戏 HUD (Gaming Heads-Up Display Telemetry)
   配色方案：主色相 43° 暖金琥珀 (#e5a91e) + 互补色 223° 幽夜深雪靛蓝 (#0b1325)
   招牌动效：信号波纹 (Signal Ripple) / 辅助动效：严格无
   ==================================================================== */

:root {
  --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  /* 配色系统 (主色相 43° 互补色) */
  --bg-deep: #0b1325;
  --bg-canvas: #0f1a30;
  --bg-surface: #111d35;
  --bg-surface-elevated: #162442;
  --bg-glass: rgba(17, 29, 53, 0.85);

  --text-main: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #8494ab;

  --accent-gold: #e5a91e;
  --accent-gold-hover: #f5b935;
  --accent-gold-glow: rgba(229, 169, 30, 0.25);
  --accent-cyan: #38bdf8;
  --accent-badge-bg: rgba(229, 169, 30, 0.12);

  --border-subtle: #1c2d4f;
  --border-blueprint: rgba(56, 189, 248, 0.2);
  --border-gold: rgba(229, 169, 30, 0.4);

  --container-width: 1140px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
}

/* 基础重置与蓝图底纹 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-deep);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-deep);
  /* 蓝图技术网格底纹 */
  background-image: 
    linear-gradient(to right, rgba(28, 45, 79, 0.25) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 45, 79, 0.25) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--text-main);
  position: relative;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-gold-hover);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 招牌动效：信号波纹 (Signal Ripple) */
@keyframes signalRipple {
  0% {
    transform: scale(0.9);
    opacity: 0.9;
  }
  50% {
    transform: scale(1.6);
    opacity: 0.35;
  }
  100% {
    transform: scale(2.4);
    opacity: 0;
  }
}

.ripple-node {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
}

.ripple-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-gold);
  border-radius: 50%;
  z-index: 2;
}

.ripple-wave {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-gold);
  animation: signalRipple 2.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
  z-index: 1;
}

/* HUD 风格顶部导航 Header */
.site-header {
  background-color: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-blueprint);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.brand-logo:hover {
  text-decoration: none;
}

.logo-hud-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-gold);
  background-color: rgba(229, 169, 30, 0.08);
  color: var(--accent-gold);
  font-family: monospace;
  font-weight: bold;
  font-size: 0.95rem;
  position: relative;
}

.logo-hud-box::after {
  content: "";
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 4px;
  height: 4px;
  background-color: var(--accent-gold);
}

.brand-tag {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--accent-cyan);
  background-color: rgba(56, 189, 248, 0.1);
  padding: 1px 6px;
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-left: 6px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 20px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 6px;
  display: inline-block;
  min-height: 44px;
  line-height: 28px;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
  text-decoration: none;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 6px;
  right: 6px;
  height: 2px;
  background-color: var(--accent-gold);
}

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

/* 按钮规范 (HUD 蓝图线框切角风格) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 22px;
  min-height: 44px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  position: relative;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-gold);
  color: #0b1325;
  border-color: var(--accent-gold);
  font-weight: 700;
}

.btn-primary:hover {
  background-color: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
  color: #0b1325;
}

.btn-secondary {
  background-color: rgba(17, 29, 53, 0.6);
  color: var(--text-main);
  border-color: var(--border-blueprint);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.btn-sm {
  font-size: 0.88rem;
  padding: 6px 16px;
  min-height: 38px;
}

.btn-lg {
  font-size: 1.05rem;
  padding: 12px 30px;
  min-height: 48px;
}

.btn-block {
  width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-blueprint);
  color: var(--text-main);
  padding: 8px 12px;
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
  font-size: 1.1rem;
}

.mobile-nav-panel {
  display: none;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-blueprint);
  padding: 16px 20px;
}

.mobile-nav-panel.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-nav-list a {
  display: block;
  font-size: 1rem;
  color: var(--text-secondary);
  padding: 8px 0;
  min-height: 44px;
  line-height: 28px;
}

/* 主内容区与模块间距 */
.site-main {
  flex: 1;
}

.section-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.section-head {
  margin-bottom: 44px;
  max-width: 720px;
}

.section-tag {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--accent-gold);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: inline-block;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Hero Section (雪国温泉旅馆 × HUD 蓝图线稿) */
.hero-block {
  padding: 80px 0 68px;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, rgba(15, 26, 48, 0.7) 0%, rgba(11, 19, 37, 0.95) 100%);
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 44px;
  align-items: center;
}

.hero-content {
  max-width: 640px;
}

.hero-meta-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

.hero-headline {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 20px;
}

.hero-subline {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero-notes {
  display: flex;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.hero-note-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Hero HUD 遥测框 (雪国天线 + 旅人剪影 + 蓝图线稿) */
.hero-telemetry-hud {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-blueprint);
  padding: 24px;
  position: relative;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

/* HUD 四角标饰线 */
.hero-telemetry-hud::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--accent-gold);
  border-left: 2px solid var(--accent-gold);
}

.hero-telemetry-hud::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 12px;
  height: 12px;
  border-bottom: 2px solid var(--accent-gold);
  border-right: 2px solid var(--accent-gold);
}

.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--border-subtle);
  font-family: monospace;
  font-size: 0.85rem;
}

.hud-title-text {
  color: var(--text-main);
  font-weight: 600;
}

.hud-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-gold);
}

.hud-illustration {
  margin-bottom: 18px;
  background-color: #0b1325;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 160px;
  position: relative;
  overflow: hidden;
}

.hud-data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  font-family: monospace;
  font-size: 0.85rem;
}

.hud-data-item {
  background-color: rgba(11, 19, 37, 0.6);
  border: 1px solid var(--border-subtle);
  padding: 10px 12px;
}

.hud-data-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-bottom: 4px;
}

.hud-data-val {
  color: var(--text-main);
  font-weight: 600;
}

.val-gold {
  color: var(--accent-gold);
}

.val-cyan {
  color: var(--accent-cyan);
}

/* FAQ 模块：双列手风琴 (2-Column Accordion) */
.faq-grid-twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  height: fit-content;
}

.faq-toggle {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  min-height: 54px;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.faq-toggle:hover {
  background-color: var(--bg-surface-elevated);
}

.faq-icon-hud {
  font-family: monospace;
  color: var(--accent-gold);
  font-size: 1.1rem;
  font-weight: 400;
}

.faq-body {
  display: none;
  padding: 0 20px 20px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  border-top: 1px dashed var(--border-subtle);
  padding-top: 16px;
}

.faq-item.active {
  border-color: var(--border-blueprint);
}

.faq-item.active .faq-body {
  display: block;
}

/* 特性模块：图文左右交错形态 (Alternating Zig-Zag) */
.features-alternating-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 36px;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 32px;
}

.feature-row.reverse {
  grid-template-columns: 1.25fr 1fr;
}

.feature-row.reverse .feature-visual {
  order: 2;
}

.feature-row.reverse .feature-info {
  order: 1;
}

.feature-visual {
  background-color: var(--bg-deep);
  border: 1px solid var(--border-blueprint);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  position: relative;
}

.feature-number-hud {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--accent-gold);
  border: 1px solid rgba(229, 169, 30, 0.3);
  padding: 2px 6px;
}

.feature-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.feature-info p {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 定价模块：并列卡片 (4-Column Pricing Grid) */
.pricing-grid-four {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pricing-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--accent-gold);
  background-color: var(--bg-surface-elevated);
  box-shadow: 0 8px 24px rgba(229, 169, 30, 0.12);
}

.pricing-ribbon-hud {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-gold);
  color: #0b1325;
  font-size: 0.75rem;
  font-family: monospace;
  font-weight: 700;
  padding: 2px 10px;
  letter-spacing: 0.05em;
}

.pricing-plan-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pricing-target-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  min-height: 38px;
}

.pricing-price-wrap {
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--border-subtle);
}

.price-currency {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
}

.price-amount {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: monospace;
}

.price-unit {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  flex: 1;
}

.pricing-features-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.pricing-features-list li::before {
  content: "»";
  color: var(--accent-gold);
  font-weight: bold;
}

/* 使用场景模块：3 张卡片形态 */
.scenarios-grid-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.scenario-hud-tag {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.scenario-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.scenario-devices {
  font-size: 0.85rem;
  color: var(--accent-gold);
  background-color: rgba(229, 169, 30, 0.08);
  padding: 4px 8px;
  display: inline-block;
  margin-bottom: 14px;
  border: 1px solid rgba(229, 169, 30, 0.2);
  width: fit-content;
}

.scenario-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 流媒体支持模块 (纯文字与线性图标) */
.streaming-support-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 32px;
}

.streaming-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.streaming-subtext {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.streaming-tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.streaming-linear-tag {
  background-color: var(--bg-deep);
  border: 1px solid var(--border-blueprint);
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Final CTA */
.cta-banner {
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-elevated) 100%);
  border: 1px solid var(--border-gold);
  padding: 48px;
  text-align: center;
  margin: 64px 0;
  position: relative;
}

.cta-banner-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.cta-banner-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 28px;
}

/* 页脚 Footer (严格仅放导航、版权与法定披露句，不放文章列表) */
.site-footer {
  background-color: #070e1c;
  border-top: 1px solid var(--border-subtle);
  padding: 44px 0 28px;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  min-height: 44px;
  line-height: 44px;
}

.footer-nav a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}

/* 移动端吸底 CTA */
.sticky-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--accent-gold);
  padding: 10px 16px;
  box-shadow: 0 -8px 20px rgba(0, 0, 0, 0.4);
  z-index: 99;
}

.sticky-bottom-bar .btn {
  width: 100%;
}

/* 指南页与文章页样式 */
.page-header {
  padding: 44px 0 32px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(15, 26, 48, 0.6);
  margin-bottom: 40px;
}

.breadcrumbs {
  font-size: 0.86rem;
  font-family: monospace;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

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

.breadcrumbs a:hover {
  color: var(--accent-gold);
}

.page-title {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 12px;
}

.page-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-family: monospace;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.content-wrapper {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 40px;
  margin-bottom: 48px;
  position: relative;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

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

.article-body blockquote {
  border-left: 3px solid var(--accent-gold);
  background-color: rgba(11, 19, 37, 0.7);
  padding: 14px 20px;
  margin-bottom: 20px;
  color: var(--text-main);
}

.article-cta-box {
  background-color: rgba(229, 169, 30, 0.06);
  border: 1px solid var(--border-gold);
  padding: 28px;
  margin: 36px 0;
  text-align: center;
}

.article-cta-box p {
  font-size: 1rem;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 16px;
}

.internal-links-box {
  border: 1px solid var(--border-subtle);
  background-color: #0b1325;
  padding: 24px;
  margin-top: 36px;
}

.internal-links-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 14px;
  font-family: monospace;
}

.internal-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.internal-links-list a {
  font-size: 0.94rem;
  color: var(--text-main);
  display: inline-block;
  min-height: 36px;
  line-height: 36px;
}

.internal-links-list a:hover {
  color: var(--accent-gold);
}

/* 指南卡片网格 (guides.html) */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.guide-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.guide-thumb-blueprint {
  background-color: #0b1325;
  border: 1px solid var(--border-blueprint);
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-gold);
}

.guide-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.guide-title a {
  color: var(--text-main);
}

.guide-title a:hover {
  color: var(--accent-gold);
}

.guide-excerpt {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.guide-meta-hud {
  font-family: monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
}

/* 响应式断点优化 */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .pricing-grid-four {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-alternating-list .feature-row,
  .features-alternating-list .feature-row.reverse {
    grid-template-columns: 1fr;
  }

  .features-alternating-list .feature-row.reverse .feature-visual {
    order: 1;
  }

  .features-alternating-list .feature-row.reverse .feature-info {
    order: 2;
  }

  .scenarios-grid-three {
    grid-template-columns: 1fr;
  }

  .faq-grid-twocol,
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero-headline {
    font-size: 1.95rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .pricing-grid-four {
    grid-template-columns: 1fr;
  }

  .sticky-bottom-bar {
    display: block;
  }

  body {
    padding-bottom: 64px;
  }

  .content-wrapper {
    padding: 24px 18px;
  }
}