/* ==========================================================================
   红杏云机场 (Hongxingyun Airport) - Claymorphism (高质感粘土拟态) Stylesheet
   Design Core: Soft Macaron Palette, Chubby 3D Cards, Inflatable Elements, Gummy Buttons
   ========================================================================== */

:root {
  /* Macaron Color Palette */
  --bg-main: #FAF6EE;
  --bg-subtle: #F4EFE6;
  --card-bg: #FFFFFF;
  --card-alt-bg: #FFFDF9;
  
  --color-apricot: #FF7E67;
  --color-apricot-hover: #FF664B;
  --color-apricot-light: #FFF0ED;
  
  --color-blue: #4D96FF;
  --color-blue-light: #EEF5FF;
  
  --color-mint: #42C29D;
  --color-mint-light: #EBF9F5;
  
  --color-purple: #9A86FF;
  --color-purple-light: #F3F0FF;
  
  --color-yellow: #FFC048;
  --color-yellow-light: #FFF8E7;

  --text-primary: #2D3436;
  --text-secondary: #636E72;
  --text-muted: #95A5A6;
  
  --border-radius-xl: 36px;
  --border-radius-lg: 24px;
  --border-radius-md: 16px;
  --border-radius-pill: 9999px;

  /* Claymorphic Shadows */
  --clay-shadow-card: 0 16px 32px rgba(180, 160, 140, 0.12),
                      inset 3px 3px 6px rgba(255, 255, 255, 0.95),
                      inset -4px -4px 10px rgba(200, 180, 160, 0.18);

  --clay-shadow-hover: 0 22px 40px rgba(180, 160, 140, 0.18),
                       inset 4px 4px 8px rgba(255, 255, 255, 1),
                       inset -4px -4px 12px rgba(200, 180, 160, 0.22);

  --clay-shadow-button: 0 10px 22px rgba(255, 126, 103, 0.35),
                        inset 2px 2px 5px rgba(255, 255, 255, 0.6),
                        inset -2px -2px 6px rgba(180, 40, 20, 0.25);

  --clay-shadow-button-blue: 0 10px 22px rgba(77, 150, 255, 0.35),
                             inset 2px 2px 5px rgba(255, 255, 255, 0.6),
                             inset -2px -2px 6px rgba(20, 80, 180, 0.25);

  --clay-shadow-pressed: 0 4px 8px rgba(0, 0, 0, 0.1),
                         inset 2px 2px 5px rgba(0, 0, 0, 0.15),
                         inset -2px -2px 5px rgba(255, 255, 255, 0.5);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max-width: 1200px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

/* Header Navbar */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 24px rgba(180, 160, 140, 0.12);
}

.nav-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo-badge {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #FF9F89, #FF664B);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-size: 1.4rem;
  box-shadow: var(--clay-shadow-button);
}

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

.nav-links a {
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-secondary);
  transition: all 0.25s ease;
}

.nav-links a:hover {
  color: var(--color-apricot);
  transform: translateY(-1px);
}

.btn-gummy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--border-radius-pill);
  font-weight: 700;
  font-size: 1rem;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--color-apricot), var(--color-apricot-hover));
  box-shadow: var(--clay-shadow-button);
  border: 1px solid rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.btn-gummy:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 28px rgba(255, 126, 103, 0.45),
              inset 2px 2px 5px rgba(255, 255, 255, 0.8);
}

.btn-gummy:active {
  transform: translateY(2px) scale(0.98);
  box-shadow: var(--clay-shadow-pressed);
}

.btn-gummy-blue {
  background: linear-gradient(135deg, #6BCBEE, #4D96FF);
  box-shadow: var(--clay-shadow-button-blue);
}

.btn-gummy-blue:hover {
  box-shadow: 0 14px 28px rgba(77, 150, 255, 0.45),
              inset 2px 2px 5px rgba(255, 255, 255, 0.8);
}

/* Clay Cards */
.clay-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius-xl);
  padding: 36px;
  box-shadow: var(--clay-shadow-card);
  border: 2px solid rgba(255, 255, 255, 0.8);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.clay-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--clay-shadow-hover);
}

/* Hero Section */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background-color: var(--color-apricot-light);
  color: var(--color-apricot);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--border-radius-pill);
  box-shadow: inset 2px 2px 4px rgba(255, 255, 255, 0.8),
              inset -2px -2px 4px rgba(255, 126, 103, 0.15);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title span {
  color: var(--color-apricot);
  background: linear-gradient(135deg, var(--color-apricot), #FF4D4D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px dashed rgba(200, 180, 160, 0.3);
}

.stat-item h4 {
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--color-apricot);
}

.stat-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
}

.hero-image-box {
  position: relative;
  text-align: center;
}

.hero-image-box img {
  border-radius: var(--border-radius-xl);
  filter: drop-shadow(0 20px 30px rgba(180, 160, 140, 0.25));
  animation: floatBounce 4s ease-in-out infinite;
}

@keyframes floatBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Section Title Header */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: var(--color-blue-light);
  color: var(--color-blue);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--border-radius-pill);
  margin-bottom: 12px;
  box-shadow: inset 1px 1px 3px rgba(255,255,255,0.9);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 14px;
}

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

/* Core Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  margin-bottom: 80px;
}

.adv-card {
  text-align: left;
}

.adv-icon {
  width: 64px;
  height: 64px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  box-shadow: inset 2px 2px 5px rgba(255, 255, 255, 0.9),
              inset -2px -2px 6px rgba(0, 0, 0, 0.08);
}

.adv-icon.icon-apricot { background: var(--color-apricot-light); color: var(--color-apricot); }
.adv-icon.icon-blue { background: var(--color-blue-light); color: var(--color-blue); }
.adv-icon.icon-mint { background: var(--color-mint-light); color: var(--color-mint); }
.adv-icon.icon-purple { background: var(--color-purple-light); color: var(--color-purple); }

.adv-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.adv-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Pricing Section */
.pricing-section {
  padding: 40px 0 80px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card.popular {
  background: linear-gradient(180deg, #FFFFFF 0%, #FFF8F5 100%);
  border: 3px solid var(--color-apricot);
  transform: translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--color-apricot);
  color: #FFF;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--border-radius-pill);
  box-shadow: var(--clay-shadow-button);
}

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

.plan-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-apricot);
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price span {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
}

.plan-features li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px dashed rgba(0,0,0,0.05);
}

.plan-features li i {
  color: var(--color-mint);
  font-weight: 900;
}

/* Audience Section */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 80px;
}

.audience-card {
  padding: 30px;
}

.audience-tag {
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  display: inline-block;
  margin-bottom: 14px;
}

/* Setup Tutorial Steps */
.tutorial-section {
  padding: 40px 0 80px;
}

.tutorial-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-apricot);
  color: #FFF;
  font-weight: 900;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--clay-shadow-button);
}

.step-content h4 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-bottom: 80px;
}

.user-avatar-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
}

.avatar-clay {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-blue-light);
  color: var(--color-blue);
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 2px 2px 4px rgba(255,255,255,0.9);
}

/* FAQ Accordion */
.faq-container {
  max-width: 860px;
  margin: 0 auto 80px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  cursor: pointer;
  transition: all 0.25s ease;
}

.faq-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  transition: transform 0.3s ease;
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease;
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--color-apricot-light);
  color: var(--color-apricot);
}

.faq-item.active .faq-body {
  max-height: 300px;
  padding-top: 14px;
}

/* Articles Directory Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-bottom: 80px;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.article-card-title:hover {
  color: var(--color-apricot);
}

.article-card-excerpt {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Footer */
.footer {
  background: #F4ECE1;
  padding: 60px 0 30px;
  border-top: 3px solid rgba(255, 255, 255, 0.8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin: 14px 0 20px;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--text-primary);
}

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* SEO Article Page Styles */
.article-header {
  padding: 40px 0 30px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--color-apricot);
  font-weight: 600;
}

.article-h1 {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-content {
  background: var(--card-bg);
  border-radius: var(--border-radius-xl);
  padding: 42px;
  box-shadow: var(--clay-shadow-card);
  margin-bottom: 50px;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 900;
  margin: 32px 0 16px;
  padding-left: 14px;
  border-left: 5px solid var(--color-apricot);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 24px 0 12px;
  color: var(--color-apricot);
}

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

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

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

.article-content code {
  background: var(--bg-subtle);
  padding: 3px 8px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--color-apricot);
}

.article-callout {
  background: var(--color-apricot-light);
  border-radius: var(--border-radius-lg);
  padding: 22px 28px;
  margin: 24px 0;
  border: 2px dashed var(--color-apricot);
}

.related-box {
  background: var(--bg-subtle);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  margin-top: 40px;
}

.related-box h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 14px;
}

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

.related-list a {
  color: var(--color-blue);
  font-weight: 600;
}

.related-list a:hover {
  text-decoration: underline;
}

/* Mobile Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .tutorial-wrapper {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .nav-links {
    display: none;
  }

  .pricing-card.popular {
    transform: none;
  }

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

  .article-content {
    padding: 24px;
  }

  .article-h1 {
    font-size: 1.8rem;
  }
}