/* ===================================================================
   鸭鸭未来城 Duck Cyber City (coco-duck.xyz) 核心样式表
   主题色彩：赛博深黑 (#070a13 / #0d1527), 鸭鸭霓虹黄 (#ffd000 / #ffde59),
            全息青蓝 (#00f2fe / #38bdf8), 霓虹紫/粉 (#ec4899 / #a855f7)
   =================================================================== */

:root {
  --bg-primary: #070a13;
  --bg-secondary: #0c1222;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 62, 0.9);
  --bg-billboard: #0e172a;
  
  --neon-yellow: #ffd000;
  --neon-yellow-glow: rgba(255, 208, 0, 0.35);
  --neon-yellow-light: #fffae0;

  --neon-cyan: #00f2fe;
  --neon-cyan-glow: rgba(0, 242, 254, 0.35);
  --neon-blue: #38bdf8;
  
  --neon-purple: #c084fc;
  --neon-magenta: #f43f5e;

  --border-dim: rgba(56, 189, 248, 0.15);
  --border-bright: rgba(0, 242, 254, 0.5);
  --border-yellow: rgba(255, 208, 0, 0.6);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-highlight: #38bdf8;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container-max: 1200px;
  --touch-target-min: 44px;
}

/* 全局重置与基础规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 242, 254, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(255, 208, 0, 0.05) 0%, transparent 40%),
    linear-gradient(to bottom, #070a13 0%, #0b1120 100%);
  background-attachment: fixed;
  padding-bottom: env(safe-area-inset-bottom);
}

/* 渐进增强背景网格画布 */
#cyber-city-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--neon-yellow);
  text-shadow: 0 0 8px var(--neon-yellow-glow);
}

/* 顶部导航栏 */
.cyber-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(7, 10, 19, 0.85);
  border-bottom: 1px solid var(--border-dim);
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.duck-icon-svg {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 0 6px var(--neon-yellow-glow));
}

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

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--neon-yellow);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.brand-city-tag {
  font-size: 0.72rem;
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  text-transform: uppercase;
}

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

.nav-links a {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 8px;
  min-height: var(--touch-target-min);
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

.nav-cta-btn {
  background: linear-gradient(135deg, var(--neon-yellow) 0%, #eab308 100%);
  color: #070a13 !important;
  font-weight: 700;
  padding: 8px 18px !important;
  border-radius: var(--radius-sm);
  border-bottom: none !important;
  box-shadow: 0 0 12px var(--neon-yellow-glow);
  min-height: var(--touch-target-min);
  display: inline-flex;
  align-items: center;
}

.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 18px var(--neon-yellow-glow);
  color: #000 !important;
}

/* 移动端汉堡菜单按钮 */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-dim);
  color: var(--neon-cyan);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* 页面主要内容容器 */
.cyber-main {
  flex: 1;
  position: relative;
  z-index: 1;
}

.content-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 30px 20px;
}

/* 城市 Hero 区域 */
.hero-cyber-city {
  padding: 50px 20px 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
}

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

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid var(--border-bright);
  padding: 6px 14px;
  border-radius: 20px;
  width: fit-content;
  font-size: 0.82rem;
  color: var(--neon-cyan);
  font-family: var(--font-mono);
}

.status-dot-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-yellow);
  box-shadow: 0 0 8px var(--neon-yellow);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-title .highlight-yellow {
  color: var(--neon-yellow);
  text-shadow: 0 0 16px var(--neon-yellow-glow);
}

.hero-title .highlight-cyan {
  color: var(--neon-cyan);
  text-shadow: 0 0 16px var(--neon-cyan-glow);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 10px;
}

.btn-primary-portal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--neon-yellow) 0%, #eab308 100%);
  color: #070a13;
  font-weight: 700;
  font-size: 1rem;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px var(--neon-yellow-glow);
  min-height: var(--touch-target-min);
  border: none;
  cursor: pointer;
}

.btn-primary-portal:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px var(--neon-yellow-glow);
  color: #000;
}

.btn-secondary-guide {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-bright);
  color: var(--neon-cyan);
  font-weight: 600;
  font-size: 1rem;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  min-height: var(--touch-target-min);
}

.btn-secondary-guide:hover {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--neon-cyan);
  color: #fff;
}

/* 全息信息牌与城市街区卡片 */
.hero-hologram-card {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.85) 0%, rgba(12, 18, 34, 0.95) 100%);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(0, 242, 254, 0.05);
  backdrop-filter: blur(8px);
}

.hologram-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.holo-label {
  font-size: 0.8rem;
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  letter-spacing: 1px;
}

.holo-date {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.holo-billboard-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.holo-billboard-item {
  background: rgba(2, 6, 23, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.holo-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.holo-text h4 {
  font-size: 0.92rem;
  color: var(--text-main);
  margin-bottom: 4px;
}

.holo-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 章节通用标题 */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 36px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--neon-yellow);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 软件与订阅关系剖析模块 */
.cyber-section {
  padding: 48px 0;
  border-top: 1px solid var(--border-dim);
}

.relation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.relation-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.relation-card.duck-brand {
  border-top: 3px solid var(--neon-yellow);
}

.relation-card.client-tool {
  border-top: 3px solid var(--neon-cyan);
}

.card-role-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  margin-bottom: 10px;
}

.duck-brand .card-role-badge {
  background: rgba(255, 208, 0, 0.15);
  color: var(--neon-yellow);
}

.client-tool .card-role-badge {
  background: rgba(0, 242, 254, 0.15);
  color: var(--neon-cyan);
}

.relation-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: #fff;
}

.relation-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.feature-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-checklist li {
  font-size: 0.88rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.check-icon {
  color: var(--neon-cyan);
  font-weight: bold;
}

.flow-bridge-box {
  background: rgba(14, 23, 42, 0.8);
  border: 1px dashed var(--border-bright);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: center;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.flow-bridge-box strong {
  color: var(--neon-yellow);
}

/* 实用功能：配置前兼容检查器 */
.checker-wrapper {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(9, 14, 26, 0.95) 100%);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.checker-form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.checker-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checker-field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--neon-cyan);
}

.cyber-select {
  background: #060913;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 10px 14px;
  font-size: 0.95rem;
  min-height: var(--touch-target-min);
  outline: none;
  cursor: pointer;
}

.cyber-select:focus {
  border-color: var(--neon-yellow);
  box-shadow: 0 0 10px var(--neon-yellow-glow);
}

.checker-result-box {
  background: rgba(2, 6, 23, 0.8);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all 0.3s ease;
}

.result-status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-dim);
}

.result-badge {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
}

.badge-verified {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid #10b981;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border: 1px solid #f59e0b;
}

.badge-unsupported {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border: 1px solid #ef4444;
}

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

.result-details-list li {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.result-details-list li strong {
  color: #fff;
}

/* 教程目录卡片网格 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: 240px;
}

.guide-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-bright);
  box-shadow: 0 10px 24px rgba(0, 242, 254, 0.15);
}

.guide-card-top {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guide-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--neon-cyan);
  font-weight: 700;
}

.guide-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.4;
}

.guide-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.guide-card-bottom {
  margin-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.read-more-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--neon-cyan);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: var(--touch-target-min);
}

.read-more-link:hover {
  color: var(--neon-yellow);
}

/* 套餐街区卡片网格 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.2s ease;
}

.pricing-card.popular {
  border-color: var(--neon-yellow);
  box-shadow: 0 0 24px rgba(255, 208, 0, 0.15);
  background: linear-gradient(180deg, rgba(22, 33, 62, 0.8) 0%, rgba(12, 18, 34, 0.9) 100%);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--neon-yellow);
  color: #070a13;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 0.5px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.plan-target {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  min-height: 40px;
}

.plan-price-box {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-dim);
}

.price-currency {
  font-size: 1.2rem;
  color: var(--neon-cyan);
  font-weight: 700;
}

.price-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.price-yearly-sub {
  font-size: 0.82rem;
  color: var(--neon-yellow);
  margin-top: 4px;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  flex: 1;
}

.plan-features li {
  font-size: 0.9rem;
  color: var(--text-main);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.plan-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 242, 254, 0.15);
  border: 1px solid var(--border-bright);
  color: var(--neon-cyan);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  min-height: var(--touch-target-min);
  cursor: pointer;
}

.pricing-card.popular .plan-btn {
  background: linear-gradient(135deg, var(--neon-yellow) 0%, #eab308 100%);
  color: #070a13;
  border: none;
  box-shadow: 0 0 16px var(--neon-yellow-glow);
}

.plan-btn:hover {
  transform: translateY(-2px);
  color: #fff;
}

.pricing-card.popular .plan-btn:hover {
  color: #000;
  box-shadow: 0 0 24px var(--neon-yellow-glow);
}

/* 评价真实空态模块 (遵循无授权评价不造假原则) */
.reviews-section {
  padding: 40px 0;
}

.empty-review-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px dashed var(--border-dim);
  border-radius: var(--radius-md);
  padding: 36px 20px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.empty-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.empty-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ 常见问题模块 */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  min-height: var(--touch-target-min);
}

.faq-question:hover {
  color: var(--neon-cyan);
}

.faq-arrow {
  font-size: 1.2rem;
  color: var(--neon-cyan);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 18px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 博客文章正文排版（富文本语义化） */
.article-header {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-dim);
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumbs a {
  color: var(--neon-cyan);
}

.article-main-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 14px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

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

.meta-highlight {
  color: var(--neon-yellow);
}

.article-body {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.8;
}

.article-h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-dim);
}

.article-h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--neon-cyan);
  margin: 28px 0 12px;
}

.article-h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--neon-yellow);
  margin: 20px 0 8px;
}

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

.article-list {
  margin: 0 0 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-list li {
  line-height: 1.6;
}

/* 响应式表格与外壳 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.7);
  -webkit-overflow-scrolling: touch;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  min-width: 580px;
}

.article-table th {
  background: rgba(2, 6, 23, 0.9);
  color: var(--neon-cyan);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-bright);
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-dim);
  color: var(--text-main);
  line-height: 1.5;
}

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

.article-table tr:hover td {
  background: rgba(0, 242, 254, 0.04);
}

/* 代码块 */
.code-block {
  background: #020617;
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  color: #38bdf8;
  margin: 20px 0;
}

.inline-code {
  background: rgba(56, 189, 248, 0.15);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: 4px;
}

/* 文章底部上下篇与选购卡片 */
.article-footer-cta {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(22, 33, 62, 0.9) 100%);
  border: 1px solid var(--border-yellow);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 40px 0 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-cta-text h4 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 6px;
}

.footer-cta-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.article-nav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 30px;
}

.nav-link-box {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: var(--touch-target-min);
}

.nav-link-box:hover {
  border-color: var(--neon-cyan);
}

.nav-label {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.nav-dest-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
}

/* 页脚区域 */
.cyber-footer {
  border-top: 1px solid var(--border-dim);
  background: #030712;
  padding: 48px 20px 30px;
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-col p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul a {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.footer-col ul a:hover {
  color: var(--neon-cyan);
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.footer-disclaimer {
  max-width: 800px;
  line-height: 1.5;
}

/* ===================================================================
   移动端与响应式断点适配 (768px, 430px, 390px, 360px)
   =================================================================== */

@media (max-width: 1024px) {
  .hero-cyber-city {
    grid-template-columns: 1fr;
  }
  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 60px;
  }
  .mobile-menu-toggle {
    display: inline-flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: #090e1a;
    border-bottom: 1px solid var(--border-bright);
    flex-direction: column;
    padding: 20px;
    gap: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.8);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .nav-cta-btn {
    width: 100%;
    justify-content: center;
  }

  .hero-title {
    font-size: 2rem;
  }

  .relation-grid {
    grid-template-columns: 1fr;
  }

  .checker-form-grid {
    grid-template-columns: 1fr;
  }

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

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

  .article-footer-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .article-footer-cta .btn-primary-portal {
    width: 100%;
  }

  .article-nav-links {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 430px) {
  .hero-title {
    font-size: 1.7rem;
  }
  .hero-desc {
    font-size: 0.98rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn-primary-portal,
  .btn-secondary-guide {
    width: 100%;
  }

  .checker-wrapper {
    padding: 20px 16px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .article-main-title {
    font-size: 1.65rem;
  }
}

/* 减少动画辅助设定 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  #cyber-city-canvas {
    display: none;
  }
}