/* 云图机场 - 平流层气象等高云图与烈焰琥珀卫星风格 (Stratosphere Isobar Cloud-Map & Solar Amber Satellite) */
:root {
  --bg-main: #0F172A;
  --bg-alt: #162038;
  --bg-card: #1E293B;
  --text-heading: #F8FAFC;
  --text-body: #CBD5E1;
  --text-muted: #94A3B8;
  --accent-primary: #F97316;
  --accent-secondary: #14B8A6;
  --accent-soft: rgba(249, 115, 22, 0.16);
  --border-color: #334155;
  --header-bg: rgba(15, 23, 42, 0.96);
  --footer-bg: #0B1120;
  --btn-text: #0F172A;
  --shadow-card: 0 16px 36px -8px rgba(2, 6, 23, 0.55);
  --radius-lg: 18px;
  --radius-md: 12px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.78;
  overflow-x: hidden;
}

/* 超链接采用与网站配色协调的醒目色调，访问前后颜色完全一致，绝不使用默认蓝紫色 */
a,
a:link,
a:visited {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

a:hover,
a:active {
  color: var(--accent-primary);
  text-decoration: underline;
  opacity: 0.88;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
}

.brand-link,
.brand-link:link,
.brand-link:visited {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-heading);
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: none;
  opacity: 0.92;
}

.brand-logo-svg {
  flex-shrink: 0;
}

.brand-text {
  font-size: 1.42rem;
  font-weight: 900;
  letter-spacing: 0.03em;
  color: var(--text-heading);
}

.brand-tag {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
  padding: 2px 9px;
  border-radius: 999px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 14px;
  flex-wrap: wrap;
}

.nav-item,
.nav-item:link,
.nav-item:visited {
  color: var(--text-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 11px;
  border-radius: 8px;
  text-decoration: none;
}

.nav-item:hover,
.nav-item.active-nav {
  color: var(--accent-primary);
  background: var(--accent-soft);
  text-decoration: none;
}

.nav-cta-btn,
.nav-cta-btn:link,
.nav-cta-btn:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-primary);
  color: var(--btn-text);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.14);
}

.nav-cta-btn:hover {
  color: var(--btn-text);
  text-decoration: none;
  opacity: 0.92;
}

/* Hero Section */
.hero-section {
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 42px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: pulseGlow 2s infinite ease-in-out;
}

.hero-title {
  font-size: 2.65rem;
  line-height: 1.24;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 18px;
}

.hero-highlight {
  color: var(--accent-primary);
}

.hero-subtitle {
  font-size: 1.06rem;
  color: var(--text-body);
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.btn-primary-cta,
.btn-primary-cta:link,
.btn-primary-cta:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-primary);
  color: var(--btn-text);
  font-size: 1.02rem;
  font-weight: 800;
  padding: 14px 28px;
  border-radius: 12px;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

.btn-primary-cta:hover {
  color: var(--btn-text);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary-rank,
.btn-secondary-rank:link,
.btn-secondary-rank:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
  font-size: 1.02rem;
  font-weight: 800;
  padding: 12px 24px;
  border-radius: 12px;
  text-decoration: none;
}

.btn-secondary-rank:hover {
  background: var(--accent-soft);
  color: var(--accent-primary);
  text-decoration: none;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid var(--border-color);
}

.metric-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-val {
  font-size: 1.38rem;
  font-weight: 900;
  color: var(--accent-primary);
}

.metric-lbl {
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* Hero Animated Illustration Stage */
.hero-visual-stage {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.stage-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-heading);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.stage-status-pill {
  background: var(--accent-soft);
  color: var(--accent-primary);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
}

.hero-atlas-svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

.stage-bottom-notes {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 12px;
  margin-top: 12px;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Keyframe Animations for Cloud Atlas SVG */
@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.25); opacity: 0.45; }
}

@keyframes cloudDriftSlow {
  0%, 100% { transform: translateX(0px); }
  50% { transform: translateX(14px); }
}

@keyframes cloudDriftReverse {
  0%, 100% { transform: translateX(0px); }
  50% { transform: translateX(-14px); }
}

@keyframes dashFlow {
  to { stroke-dashoffset: -48; }
}

.anim-cloud-slow {
  animation: cloudDriftSlow 6s infinite ease-in-out;
}

.anim-cloud-rev {
  animation: cloudDriftReverse 7s infinite ease-in-out;
}

.anim-route-dash {
  stroke-dasharray: 6 6;
  animation: dashFlow 2.6s infinite linear;
}

/* Section Blocks */
.section-block {
  padding: 68px 0;
}

.section-block.alt-bg {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 44px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--accent-primary);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2rem;
  line-height: 1.3;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 12px;
}

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

/* Feature Cards Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-icon-wrap {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.94rem;
  color: var(--text-body);
  margin-bottom: 16px;
}

.feature-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  padding-top: 10px;
  border-top: 1px dashed var(--border-color);
}

/* Scenarios Matrix */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.scene-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.scene-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scene-content h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.scene-content p {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 14px;
}

.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scene-tag {
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent-primary);
  padding: 3px 10px;
  border-radius: 999px;
}

/* Pricing Plans */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.price-card.featured-plan {
  border: 2px solid var(--accent-primary);
  transform: translateY(-6px);
}

.plan-ribbon {
  position: absolute;
  top: -13px;
  right: 22px;
  background: var(--accent-primary);
  color: var(--btn-text);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 999px;
}

.plan-name {
  font-size: 1.32rem;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.plan-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

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

.price-num {
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--accent-primary);
}

.price-unit {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-body);
}

.plan-bullet-svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.plan-btn,
.plan-btn:link,
.plan-btn:visited {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--accent-primary);
  color: var(--btn-text);
  font-weight: 800;
  padding: 13px 20px;
  border-radius: 12px;
  text-decoration: none;
}

.plan-btn:hover {
  color: var(--btn-text);
  text-decoration: none;
  opacity: 0.92;
}

/* FAQ & Voices */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
}

.faq-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}

.faq-card p {
  font-size: 0.94rem;
  color: var(--text-body);
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.voice-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.voice-quote {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 18px;
}

.voice-author {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.author-name {
  font-weight: 800;
  color: var(--text-heading);
  font-size: 0.94rem;
}

.author-role {
  font-size: 0.82rem;
  color: var(--accent-primary);
  font-weight: 700;
}

/* Hub & Article Pages */
.page-hero-banner {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border-color);
  padding: 50px 0 38px;
  text-align: center;
}

.page-hero-banner h1 {
  font-size: 2.2rem;
  color: var(--text-heading);
  font-weight: 900;
  margin-bottom: 12px;
}

.page-hero-banner p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--text-body);
  font-size: 1.02rem;
}

.hub-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 48px 0;
}

.hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hub-card-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-primary);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.hub-card h2 {
  font-size: 1.18rem;
  line-height: 1.45;
  margin-bottom: 12px;
}

.hub-card h2 a,
.hub-card h2 a:link,
.hub-card h2 a:visited {
  color: var(--text-heading);
}

.hub-card h2 a:hover {
  color: var(--accent-primary);
}

.hub-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.hub-read-more {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--accent-primary);
}

.article-outer-card {
  max-width: 860px;
  margin: 44px auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 42px 46px;
  box-shadow: var(--shadow-card);
}

.article-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.article-wrap h1 {
  font-size: 1.92rem;
  line-height: 1.35;
  color: var(--text-heading);
  font-weight: 900;
  margin-bottom: 18px;
}

.article-wrap h2 {
  font-size: 1.38rem;
  color: var(--text-heading);
  font-weight: 800;
  margin: 28px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--accent-primary);
}

.article-wrap h3 {
  font-size: 1.14rem;
  color: var(--accent-primary);
  font-weight: 800;
  margin: 20px 0 10px;
}

.article-wrap p {
  font-size: 1.01rem;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.85;
}

.article-cta-box {
  margin-top: 32px;
  padding: 24px;
  background: var(--accent-soft);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
}

.article-cta-box h3 {
  color: var(--text-heading);
  margin-bottom: 8px;
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border-color);
  padding: 38px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-brand-name {
  font-size: 1.18rem;
  font-weight: 900;
  color: var(--text-heading);
}

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

.footer-links {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a,
.footer-links a:link,
.footer-links a:visited {
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.footer-copy {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Responsive Layout & Rule 7 Mobile Navigation Visibility */
@media (max-width: 960px) {
  .hero-grid,
  .features-grid,
  .scene-grid,
  .pricing-grid,
  .faq-grid,
  .voice-grid,
  .hub-cards-grid {
    grid-template-columns: 1fr;
  }
  .price-card.featured-plan {
    transform: none;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .main-nav {
    width: 100%;
    display: flex !important;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
  }
  .nav-list {
    display: flex !important;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
  }
  .nav-item {
    font-size: 0.88rem;
    padding: 5px 9px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
  }
  .nav-cta-btn {
    width: 100%;
    text-align: center;
    padding: 10px 16px;
  }
  .hero-title {
    font-size: 1.95rem;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
  }
  .article-outer-card {
    padding: 24px 18px;
    margin: 20px 12px;
  }
}