/**
 * 良心云机场官方网站 - 全局核心样式
 * 方案 A · 云境光廊 (Corridor of Clouds)
 * 项目代号：LXY-CLOUD-A01
 */

@import url("./variables.css");

/* 1. 基础重置与无障碍基线 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-deep);
  color: var(--color-text-cloud);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 键盘无障碍跳过导航 */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-accent-cyan);
  color: var(--color-bg-darkest);
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 4px;
  z-index: 9999;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* 焦点指示器（可访问性规范） */
:focus-visible {
  outline: 2px solid var(--color-accent-glow);
  outline-offset: 3px;
}

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

a:hover {
  color: var(--color-accent-glow);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

.container-narrow {
  max-width: var(--container-narrow-width);
}

/* 2. 顶部导航 (半透明深蓝磨砂背景) */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: var(--z-header);
  transition: background var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  min-height: 44px;
}

.brand-link img {
  height: 38px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--color-text-cloud);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 4px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-cyan);
  transition: width var(--transition-normal);
}

.nav-link:hover {
  color: var(--color-text-pure);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* 导航 CTA 按钮 */
.header-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 汉堡菜单切换按钮 (移动端专用) */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border-subtle);
  border-radius: 6px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  justify-content: space-around;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-cloud);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* 按钮设计规范 (冰银色渐变，避免夸张霓虹) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--grad-corridor-btn);
  color: var(--color-bg-darkest);
  box-shadow: 0 4px 16px rgba(114, 215, 238, 0.25);
}

.btn-primary:hover {
  background: var(--grad-btn-hover);
  color: var(--color-bg-darkest);
  box-shadow: var(--glow-accent-cyan);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(16, 36, 58, 0.85);
  color: var(--color-text-cloud);
  border: 1px solid var(--color-border-subtle);
}

.btn-secondary:hover {
  background: var(--color-bg-elevated);
  color: var(--color-text-pure);
  border-color: var(--color-accent-cyan);
  transform: translateY(-1px);
}

.btn-large {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: 8px;
}

/* 待核验标注徽章 */
.badge-unverified {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(220, 231, 241, 0.1);
  color: var(--color-text-muted);
  border: 1px solid rgba(220, 231, 241, 0.2);
  margin-left: 8px;
  vertical-align: middle;
}

/* 3. 01 沉浸式全屏主视觉 (Hero) */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
  background-color: var(--color-bg-deep);
  overflow: hidden;
}

.hero-bg-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-bg-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  text-align: left;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent-cyan);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  background: rgba(16, 36, 58, 0.7);
  padding: 6px 16px;
  border-radius: 30px;
  border: 1px solid var(--color-border-subtle);
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-pure);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.85rem);
  font-weight: 500;
  color: var(--color-accent-cyan);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 32px;
}

.hero-disclaimer {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 4. 02 三段式纵向品牌叙事 (宽幅画卷滚动，拒绝小卡片) */
.narrative-section {
  padding: 110px 0;
  position: relative;
  border-top: 1px solid var(--color-border-subtle);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 70px auto;
}

.section-tag {
  color: var(--color-accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  font-weight: 700;
  color: var(--color-text-pure);
  line-height: 1.3;
  margin-bottom: 18px;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* 叙事段落 (宽幅画卷与不对称图文过渡) */
.narrative-block {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 60px;
  margin-bottom: 110px;
  background: var(--grad-card-flow);
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  padding: 48px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-corridor-sm);
}

.narrative-block.reverse {
  grid-template-columns: 0.85fr 1.15fr;
}

.narrative-block.reverse .narrative-visual {
  order: 2;
}

.narrative-visual {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(114, 215, 238, 0.15);
  box-shadow: var(--shadow-corridor-lg);
}

.narrative-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.narrative-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-accent-cyan);
  opacity: 0.85;
  line-height: 1;
}

.narrative-heading {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text-pure);
}

.narrative-body {
  font-size: 1.02rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.narrative-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.narrative-point-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text-cloud);
}

.narrative-point-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
}

/* 5. 03 使用场景展示 (不对称宽幅排版) */
.scenarios-section {
  padding: 110px 0;
  background: var(--color-bg-darkest);
  border-top: 1px solid var(--color-border-subtle);
}

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

.scenario-card {
  background: var(--color-bg-midnight);
  border: 1px solid var(--color-border-subtle);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.scenario-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-cyan);
}

.scenario-visual {
  height: 220px;
  overflow: hidden;
  background: #091523;
}

.scenario-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scenario-content {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.scenario-category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-cyan);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.scenario-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-pure);
  margin-bottom: 12px;
}

.scenario-desc {
  font-size: 0.96rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.scenario-meta {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(114, 215, 238, 0.1);
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

/* 6. 04 套餐选择 (纵向阶梯式宽幅信息带，拒绝均分小方块) */
.pricing-section {
  padding: 110px 0;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-deep);
}

.pricing-notice-box {
  background: rgba(16, 36, 58, 0.65);
  border-left: 4px solid var(--color-accent-cyan);
  padding: 18px 24px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 40px;
  font-size: 0.95rem;
  color: var(--color-text-cloud);
}

.pricing-tier-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pricing-tier-strip {
  background: var(--grad-card-flow);
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  padding: 32px 36px;
  display: grid;
  grid-template-columns: 240px 180px 1fr 220px;
  align-items: center;
  gap: 28px;
  transition: all var(--transition-normal);
}

.pricing-tier-strip:hover {
  border-color: var(--color-accent-cyan);
  box-shadow: var(--shadow-corridor-lg);
  transform: translateX(4px);
}

.tier-primary-info .tier-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-pure);
  margin-bottom: 6px;
}

.tier-primary-info .tier-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.tier-pricing-val .price-tag {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--color-accent-cyan);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.tier-pricing-val .price-currency {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-accent-cyan);
}

.tier-pricing-val .price-cycle {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  margin-top: 4px;
}

.tier-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tier-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-cloud);
}

.tier-feature-item svg {
  width: 16px;
  height: 16px;
}

.tier-action-wrap {
  text-align: right;
}

/* 7. 05 使用流程 (云中光路三步延伸) */
.steps-section {
  padding: 110px 0;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-darkest);
}

.steps-visual-track {
  margin-bottom: 40px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  background: var(--color-bg-midnight);
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  padding: 32px 28px;
  position: relative;
}

.step-number {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-accent-cyan);
  background: rgba(114, 215, 238, 0.12);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-pure);
  margin-bottom: 12px;
}

.step-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 8. 06 用户反馈与客观服务选型指导 (宽幅精选反馈区，拒绝普通小方卡) */
.feedback-section {
  padding: 110px 0;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-deep);
}

.feedback-strip-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 50px;
}

.feedback-strip-card {
  background: var(--grad-card-flow);
  border: 1px solid var(--color-border-subtle);
  border-radius: 14px;
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  align-items: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-corridor-sm);
  position: relative;
  overflow: hidden;
}

.feedback-strip-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-accent-cyan);
  opacity: 0.6;
}

.feedback-strip-card:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-corridor-lg);
}

.feedback-strip-card:hover::before {
  background: var(--color-accent-glow);
  opacity: 1;
}

.feedback-user-profile {
  display: flex;
  align-items: center;
  gap: 16px;
}

.feedback-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
}

.feedback-user-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.feedback-user-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-pure);
}

.feedback-user-scene {
  font-size: 0.85rem;
  color: var(--color-accent-cyan);
  font-weight: 600;
}

.feedback-user-tenure {
  font-size: 0.78rem;
  color: var(--color-text-dim);
}

.feedback-content-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feedback-quote-text {
  font-size: 1.05rem;
  color: var(--color-text-cloud);
  line-height: 1.8;
  position: relative;
}

.feedback-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  border-top: 1px solid rgba(114, 215, 238, 0.1);
  padding-top: 10px;
}

.feedback-source-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-muted);
}

.guidance-section {
  padding: 0 0 100px 0;
}

.guidance-banner {
  background: linear-gradient(135deg, rgba(16, 36, 58, 0.9) 0%, rgba(7, 14, 26, 0.95) 100%);
  border: 1px solid var(--color-border-subtle);
  border-radius: 16px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.guidance-col h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-pure);
  margin-bottom: 16px;
}

.guidance-col p {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* 9. 07 常见问题 FAQ (原生 details/summary，纵向编号式，默认展开) */
.faq-section {
  padding: 110px 0;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-deep);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: var(--color-bg-midnight);
  border: 1px solid var(--color-border-subtle);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover,
.faq-item[open] {
  border-color: var(--color-accent-cyan);
}

.faq-question {
  padding: 22px 28px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-pure);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  min-height: 44px;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question-text {
  display: flex;
  align-items: center;
  gap: 16px;
}

.faq-index {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-accent-cyan);
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item[open] .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 28px 24px 62px;
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(114, 215, 238, 0.08);
  padding-top: 16px;
}

/* 10. 08 底部品牌转化区与页脚 */
.bottom-cta-section {
  position: relative;
  padding: 130px 0 90px 0;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-darkest);
  overflow: hidden;
  text-align: center;
}

.bottom-cta-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.bottom-cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bottom-cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}

.site-footer {
  background: #02050A;
  border-top: 1px solid rgba(114, 215, 238, 0.12);
  padding: 48px 0 36px 0;
  margin-top: auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 28px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.footer-links a {
  color: var(--color-text-cloud);
  font-size: 0.92rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--color-accent-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  color: var(--color-text-dim);
}

/* 11. 响应式系统 (1920, 1440, 1024, 768, 390, 375, 360px 针对性适配) */
@media (max-width: 1024px) {
  .narrative-block,
  .narrative-block.reverse {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 36px;
  }
  .narrative-block.reverse .narrative-visual {
    order: 0;
  }
  .feedback-strip-card {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px;
  }
  .pricing-tier-strip {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .tier-action-wrap {
    grid-column: span 2;
    text-align: left;
  }
  .guidance-banner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-midnight);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--color-border-subtle);
    gap: 16px;
  }
  .site-nav.open {
    display: flex;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .header-cta-group .btn-secondary {
    display: none;
  }
  .scenarios-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .feedback-strip-card {
    padding: 22px;
  }
  .pricing-tier-strip {
    grid-template-columns: 1fr;
    padding: 24px;
  }
  .tier-action-wrap {
    grid-column: span 1;
  }
  .footer-top,
  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
  .faq-answer {
    padding-left: 28px;
  }
}

/* 动效偏好适配 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}