@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ==========================================
   一分机场 浅色霓虹设计系统
   ========================================== */

:root {
  /* HSL Neon Colors */
  --neon-indigo: 235, 96%, 62%;    /* #4f46e5 */
  --neon-cyan: 188, 90%, 50%;      /* #06b6d4 */
  --neon-pink: 325, 95%, 60%;      /* #ec4899 */
  --neon-purple: 271, 91%, 65%;    /* #a855f7 */
  
  /* Text and Grays */
  --text-dark: 222, 47%, 11%;      /* #0f172a */
  --text-muted: 215, 16%, 47%;     /* #64748b */
  --bg-main: 210, 40%, 98%;        /* #f8fafc */
  --bg-card: 0, 0%, 100%;          /* #ffffff */
  
  /* Shadows and Glows */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.08);
  --glow-cyan: 0 0 15px hsla(var(--neon-cyan), 0.35);
  --glow-indigo: 0 0 15px hsla(var(--neon-indigo), 0.3);
  --glow-pink: 0 0 15px hsla(var(--neon-pink), 0.3);
  
  /* Radii */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: hsl(var(--bg-main));
  color: hsl(var(--text-dark));
  line-height: 1.625;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Background Glowing Blurs */
body::before, body::after {
  content: "";
  position: absolute;
  width: 40vw;
  height: 40vw;
  border-radius: var(--radius-full);
  filter: blur(100px);
  z-index: -1;
  opacity: 0.5;
  pointer-events: none;
}

body::before {
  top: 10%;
  left: -10%;
  background: radial-gradient(circle, hsla(var(--neon-cyan), 0.18) 0%, transparent 70%);
}

body::after {
  top: 45%;
  right: -10%;
  background: radial-gradient(circle, hsla(var(--neon-pink), 0.15) 0%, transparent 70%);
}

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

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 6rem 0;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.text-gradient {
  background: linear-gradient(135deg, hsl(var(--neon-indigo)) 0%, hsl(var(--neon-pink)) 50%, hsl(var(--neon-cyan)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }

/* Buttons & Interactive Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(135deg, hsl(var(--neon-indigo)) 0%, hsl(var(--neon-purple)) 100%);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px hsla(var(--neon-indigo), 0.3), var(--glow-indigo);
}

.btn-secondary {
  background: hsl(var(--bg-card));
  color: hsl(var(--text-dark));
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: hsl(var(--neon-cyan));
  box-shadow: var(--glow-cyan);
}

.btn-neon {
  background: transparent;
  color: #ffffff;
  border: 1px solid hsl(var(--neon-cyan));
  box-shadow: var(--glow-cyan);
}

.btn-neon:hover {
  background: linear-gradient(135deg, hsla(var(--neon-cyan), 0.1) 0%, hsla(var(--neon-pink), 0.1) 100%);
  border-color: hsl(var(--neon-pink));
  box-shadow: var(--glow-pink);
  transform: translateY(-2px);
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
  z-index: 1000;
  transition: var(--transition-normal);
}

header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: hsl(var(--text-dark));
  letter-spacing: -0.03em;
}

.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: hsl(var(--neon-cyan));
  box-shadow: var(--glow-cyan);
  display: inline-block;
  animation: pulse-glow 2s infinite alternate;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: hsl(var(--text-muted));
}

.nav-links a:hover, .nav-links a.active {
  color: hsl(var(--neon-indigo));
  text-shadow: 0 0 10px hsla(var(--neon-indigo), 0.2);
}

.nav-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
}

/* Mobile Nav Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  border: none;
  background: none;
  padding: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: hsl(var(--text-dark));
  transition: var(--transition-fast);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 8rem 0 6rem 0;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: hsl(var(--neon-indigo));
  box-shadow: var(--glow-cyan);
  margin-bottom: 2rem;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-desc {
  max-width: 680px;
  margin: 0 auto 2.5rem auto;
  font-size: 1.125rem;
  color: hsl(var(--text-muted));
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3.5rem;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: hsl(var(--bg-card));
  border: 1px solid rgba(15, 23, 42, 0.04);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  padding: 1px;
  background: linear-gradient(135deg, transparent 70%, hsla(var(--neon-cyan), 0.3) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), 0 0 20px hsla(var(--neon-cyan), 0.08);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, hsla(var(--neon-indigo), 0.1) 0%, hsla(var(--neon-cyan), 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: hsl(var(--neon-indigo));
  margin-bottom: 1.5rem;
  box-shadow: 0 0 10px hsla(var(--neon-indigo), 0.05);
}

.feature-card:nth-child(2) .feature-icon {
  background: linear-gradient(135deg, hsla(var(--neon-pink), 0.1) 0%, hsla(var(--neon-purple), 0.1) 100%);
  color: hsl(var(--neon-pink));
}

.feature-card:nth-child(2):hover::before {
  background: linear-gradient(135deg, transparent 70%, hsla(var(--neon-pink), 0.3) 100%);
}

/* Pricing Section */
.pricing-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

.pricing-tabs {
  display: flex;
  background: rgba(15, 23, 42, 0.04);
  padding: 4px;
  border-radius: var(--radius-full);
  width: fit-content;
  margin: 0 auto 3rem auto;
  border: 1px solid rgba(15, 23, 42, 0.02);
}

.pricing-tab-btn {
  background: none;
  border: none;
  padding: 0.625rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: hsl(var(--text-muted));
  transition: all var(--transition-fast);
}

.pricing-tab-btn.active {
  background: hsl(var(--bg-card));
  color: hsl(var(--text-dark));
  box-shadow: var(--shadow-sm);
}

/* Pricing Grid Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.pricing-card {
  background: hsl(var(--bg-card));
  border: 1px solid rgba(15, 23, 42, 0.05);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.pricing-card.popular {
  border-color: hsl(var(--neon-indigo));
  box-shadow: var(--shadow-lg), 0 0 25px hsla(var(--neon-indigo), 0.08);
}

.pricing-card.popular::before {
  content: "推荐套餐";
  position: absolute;
  top: 1.5rem;
  right: -2.5rem;
  background: linear-gradient(135deg, hsl(var(--neon-pink)) 0%, hsl(var(--neon-purple)) 100%);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 2.5rem;
  transform: rotate(45deg);
  box-shadow: var(--glow-pink);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), 0 0 30px hsla(var(--neon-cyan), 0.12);
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.plan-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: hsla(var(--neon-cyan), 0.1);
  color: hsl(var(--neon-cyan));
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
  width: fit-content;
}

.pricing-card.popular .plan-badge {
  background: hsla(var(--neon-pink), 0.1);
  color: hsl(var(--neon-pink));
}

.plan-price-box {
  margin-bottom: 2rem;
  display: flex;
  align-items: baseline;
}

.price-symbol {
  font-size: 1.5rem;
  font-weight: 700;
}

.plan-price {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.price-period {
  font-size: 0.95rem;
  color: hsl(var(--text-muted));
  margin-left: 0.25rem;
}

.plan-features {
  list-style: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.plan-features li::before {
  content: "✓";
  color: hsl(var(--neon-cyan));
  font-weight: 800;
  font-size: 1.1rem;
}

.pricing-card.popular .plan-features li::before {
  color: hsl(var(--neon-pink));
}

/* Pricing Table CSS (As user uploaded the image) */
.pricing-table-wrapper {
  background: hsl(var(--bg-card));
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(15, 23, 42, 0.05);
  overflow-x: auto;
  margin-bottom: 3rem;
}

.pricing-table-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  text-align: center;
  letter-spacing: -0.02em;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
  min-width: 700px;
}

.pricing-table th, .pricing-table td {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

.pricing-table th {
  font-weight: 700;
  color: hsl(var(--text-dark));
  background: rgba(15, 23, 42, 0.02);
  border-bottom: 2px solid hsl(var(--text-dark));
  font-size: 1rem;
}

.pricing-table tr:hover td {
  background-color: hsla(var(--neon-cyan), 0.02);
}

.pricing-table td {
  font-weight: 500;
  color: hsl(var(--text-dark));
  transition: var(--transition-fast);
}

.pricing-table td.highlight {
  font-weight: 700;
  color: hsl(var(--neon-indigo));
}

.pricing-table .disabled-cell {
  color: #ccc;
}

.pricing-table-cta {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

/* Audience (适合人群) */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.audience-card {
  background: hsl(var(--bg-card));
  border: 1px solid rgba(15, 23, 42, 0.04);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.audience-card:hover {
  transform: scale(1.02);
  border-color: hsl(var(--neon-pink));
  box-shadow: var(--glow-pink);
}

.audience-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  display: inline-block;
}

/* Tutorial Section */
.tutorial-wrapper {
  background: hsl(var(--bg-card));
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.tutorial-tabs {
  display: flex;
  gap: 1rem;
  border-bottom: 2px solid rgba(15, 23, 42, 0.05);
  margin-bottom: 2.5rem;
}

.tutorial-tab-btn {
  background: none;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: hsl(var(--text-muted));
  cursor: pointer;
  position: relative;
  transition: var(--transition-fast);
}

.tutorial-tab-btn::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: hsl(var(--neon-indigo));
  transform: scaleX(0);
  transition: var(--transition-fast);
}

.tutorial-tab-btn.active {
  color: hsl(var(--text-dark));
}

.tutorial-tab-btn.active::after {
  transform: scaleX(1);
}

.tutorial-content {
  display: none;
}

.tutorial-content.active {
  display: block;
  animation: fadeIn var(--transition-normal);
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.step-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
}

.step-num {
  width: 3.5rem;
  height: 3.5rem;
  background: linear-gradient(135deg, hsl(var(--neon-indigo)) 0%, hsl(var(--neon-purple)) 100%);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-indigo);
}

.step-info h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.code-box {
  background: #0f172a;
  color: #f8fafc;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.875rem;
  margin: 1rem 0;
  position: relative;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-box::before {
  content: "YAML";
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  font-weight: 700;
}

/* Reviews (用户评价) */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.review-card {
  background: hsl(var(--bg-card));
  padding: 2.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-text {
  font-size: 0.95rem;
  color: hsl(var(--text-dark));
  font-style: italic;
  margin-bottom: 1.5rem;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, hsl(var(--neon-pink)) 0%, hsl(var(--neon-purple)) 100%);
  color: white;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.review-user-info h5 {
  font-size: 0.9rem;
  font-weight: 700;
}

.review-user-info span {
  font-size: 0.8rem;
  color: hsl(var(--text-muted));
}

.rating {
  color: #fbbf24;
  margin-top: 0.25rem;
  font-size: 0.85rem;
}

/* Accordion FAQ (常见问题) */
.faq-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: hsl(var(--bg-card));
  border: 1px solid rgba(15, 23, 42, 0.04);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item:hover {
  border-color: hsla(var(--neon-cyan), 0.5);
  box-shadow: var(--glow-cyan);
}

.faq-question {
  padding: 1.5rem;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: hsl(var(--text-dark));
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-icon {
  font-size: 1.25rem;
  color: hsl(var(--text-muted));
  transition: transform var(--transition-normal);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out;
  padding: 0 1.5rem;
  color: hsl(var(--text-muted));
  font-size: 0.95rem;
}

.faq-answer p {
  padding-bottom: 1.5rem;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: hsl(var(--neon-indigo));
}

.faq-item.active .faq-answer {
  max-height: 200px;
  transition: max-height var(--transition-normal) ease-in;
}

/* Articles Section (文章目录) */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.article-card {
  background: hsl(var(--bg-card));
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: hsl(var(--neon-indigo));
  box-shadow: var(--glow-indigo);
}

.article-cover {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  background: linear-gradient(135deg, hsla(var(--neon-indigo), 0.1) 0%, hsla(var(--neon-pink), 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.article-body {
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8rem;
  color: hsl(var(--text-muted));
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1rem;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.4;
  color: hsl(var(--text-dark));
}

.article-desc {
  font-size: 0.9rem;
  color: hsl(var(--text-muted));
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.article-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: hsl(var(--neon-indigo));
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.article-link:hover {
  color: hsl(var(--neon-pink));
}

/* Footer (页脚) */
footer {
  background: #0b0f19;
  color: #94a3b8;
  padding: 5rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-logo {
  color: white;
  margin-bottom: 1.5rem;
}

.footer-info p {
  line-height: 1.75;
}

.footer-links-box h4 {
  color: white;
  font-size: 1rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer-links a:hover {
  color: hsl(var(--neon-cyan));
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.8rem;
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

/* Float CTA button (右下角悬浮流光购买按钮) */
.floating-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, hsl(var(--neon-indigo)) 0%, hsl(var(--neon-pink)) 50%, hsl(var(--neon-cyan)) 100%);
  color: white;
  font-weight: 700;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg), 0 0 20px hsla(var(--neon-pink), 0.3);
  animation: pulse-float 3s infinite;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.floating-cta:hover {
  transform: scale(1.05) translateY(-3px);
  box-shadow: var(--shadow-lg), 0 0 30px hsla(var(--neon-pink), 0.5);
}

.floating-cta span {
  display: inline-block;
  margin-left: 0.5rem;
}

/* Article Page Custom Styles (为了知识库文章美观) */
.article-page-header {
  padding: 6rem 0 3rem 0;
  text-align: center;
  background: linear-gradient(180deg, hsla(var(--neon-indigo), 0.05) 0%, transparent 100%);
}

.article-page-meta {
  color: hsl(var(--text-muted));
  font-size: 0.9rem;
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.article-content {
  background: hsl(var(--bg-card));
  padding: 3rem 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.article-content p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #334155;
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 2.5rem 0 1.25rem 0;
  border-bottom: 2px solid hsla(var(--neon-cyan), 0.2);
  padding-bottom: 0.5rem;
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 2rem 0 1rem 0;
  color: hsl(var(--neon-indigo));
}

.article-content ul, .article-content ol {
  margin: 1rem 0 2rem 2rem;
  font-size: 1.05rem;
  line-height: 1.75;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content blockquote {
  border-left: 4px solid hsl(var(--neon-pink));
  background: hsla(var(--neon-pink), 0.03);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  font-size: 1rem;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.article-content th, .article-content td {
  padding: 1rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  text-align: left;
}

.article-content th {
  background: rgba(15, 23, 42, 0.02);
  font-weight: 700;
}

.article-content td {
  color: #334155;
}

.article-content tr:nth-child(even) td {
  background: rgba(15, 23, 42, 0.01);
}

.article-footer {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

.related-articles {
  margin-top: 4rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.related-card {
  background: hsl(var(--bg-card));
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.04);
  transition: all var(--transition-normal);
}

.related-card:hover {
  transform: translateY(-3px);
  border-color: hsl(var(--neon-cyan));
  box-shadow: var(--glow-cyan);
}

.related-card h4 {
  font-size: 1rem;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.breadcrumb {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: hsl(var(--text-muted));
  margin-bottom: 2rem;
  justify-content: center;
}

.breadcrumb li+li::before {
  content: "/";
  margin-right: 0.5rem;
  color: #cbd5e1;
}

.breadcrumb a:hover {
  color: hsl(var(--neon-indigo));
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); box-shadow: 0 0 10px hsla(var(--neon-cyan), 0.3); }
  100% { transform: scale(1.1); box-shadow: 0 0 20px hsla(var(--neon-cyan), 0.7); }
}

@keyframes pulse-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .hero-desc { font-size: 1rem; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-ctas .btn { width: 100%; max-width: 320px; }
  .nav-links { display: none; } /* In actual implementation, we'll make a toggle menu or vertical drawer */
  .menu-toggle { display: flex; }
  .header-container { position: relative; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 4.5rem;
    left: -1.5rem;
    right: -1.5rem;
    background: hsl(var(--bg-card));
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    gap: 1.5rem;
    align-items: center;
  }
  .pricing-table-wrapper { padding: 1.5rem 1rem; }
  .pricing-table th, .pricing-table td { padding: 1rem 0.5rem; font-size: 0.9rem; }
  .tutorial-wrapper { padding: 2rem 1.5rem; }
  .step-item { grid-template-columns: 1fr; gap: 0.75rem; text-align: center; justify-items: center; }
  .step-num { margin-bottom: 0.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
  .footer-info { display: flex; flex-direction: column; align-items: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-content { padding: 2rem 1.5rem; }
  .article-content h2 { font-size: 1.4rem; }
  .article-content p { font-size: 1rem; }
}