/* ==========================================================================
   青云梯机场 (Qingyunti Airport) Design System
   Style: Song Dynasty Cyan Landscape & Ink (宋代青绿山水与现代微扁平排版)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Song Dynasty Cyan Landscape & Mineral Ink */
  --bg-paper: #F7F5EE;           /* 宣纸底色 Rice paper beige */
  --bg-paper-alt: #F2EFE6;       /* 深宣纸色 Warm paper background */
  --bg-card: #FAF8F3;            /* 卡片背景 */
  --bg-card-hover: #FFFFFF;      /* 卡片悬浮背景 */
  
  --shiqing: #1A535C;            /* 石青 Deep mineral cyan */
  --shiqing-light: #2A9D8F;      /* 浅石青 Vibrant cyan */
  --shilv: #2D6A4F;              /* 石绿 Mineral green */
  --shilv-light: #52B788;        /* 浅石绿 Mint green */
  
  --ink-black: #1C2526;          /* 浓墨 Single-pixel black border & primary text */
  --ink-gray: #4A5557;           /* 淡墨 Secondary text */
  --ink-muted: #7E8C8D;          /* 灰墨 Muted text */
  --ink-light: #E5E0D5;          /* 墨痕 Fine line border */
  
  --gold-accent: #C69C55;        /* 泥金/天梯光芒 Silk gold */
  --gold-glow: rgba(198, 156, 85, 0.15);
  
  /* Fonts */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', 'STSong', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Spacing & Layout */
  --max-width: 1240px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-paper);
  color: var(--ink-black);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(26, 83, 92, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 60%, rgba(45, 106, 79, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(198, 156, 85, 0.03) 0%, transparent 50%);
}

/* Background Ink Mist & Atmosphere */
.ink-atmosphere {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  opacity: 0.7;
}

.mist-blob {
  position: absolute;
  filter: blur(80px);
  border-radius: 50%;
  animation: mistFloat 20s ease-in-out infinite alternate;
}

.mist-1 {
  width: 600px;
  height: 600px;
  background: rgba(26, 83, 92, 0.06);
  top: -100px;
  left: -100px;
}

.mist-2 {
  width: 700px;
  height: 700px;
  background: rgba(45, 106, 79, 0.05);
  bottom: -200px;
  right: -150px;
  animation-delay: -7s;
}

.mist-3 {
  width: 500px;
  height: 500px;
  background: rgba(198, 156, 85, 0.04);
  top: 40%;
  left: 30%;
  animation-delay: -12s;
}

@keyframes mistFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-30px, 40px) scale(0.95); }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Typography */
h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  color: var(--ink-black);
  font-weight: 700;
  letter-spacing: 0.02em;
}

p {
  color: var(--ink-gray);
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--shiqing-light);
}

/* Mountain Sky Ladder Dividers (宋画远山线条) */
.mountain-divider {
  width: 100%;
  height: 48px;
  margin: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.mountain-divider svg {
  width: 100%;
  max-width: 600px;
  height: 36px;
  stroke: var(--shiqing);
  stroke-opacity: 0.25;
  fill: none;
}

.brush-line {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-light), var(--shiqing-light), var(--ink-light), transparent);
  margin: 3rem 0;
  position: relative;
}

.brush-line::after {
  content: "✦";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-paper);
  padding: 0 12px;
  color: var(--gold-accent);
  font-size: 0.75rem;
}

/* Header Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 238, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ink-light);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--ink-black);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--shiqing), var(--shilv));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(26, 83, 92, 0.25);
  border: 1px solid rgba(255,255,255,0.2);
}

.logo-badge {
  font-size: 0.75rem;
  font-family: var(--font-sans);
  font-weight: 500;
  padding: 2px 8px;
  background: rgba(45, 106, 79, 0.1);
  color: var(--shilv);
  border: 1px solid rgba(45, 106, 79, 0.2);
  border-radius: 12px;
  margin-left: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-black);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--shiqing), var(--shilv));
  transition: var(--transition);
}

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Primary Button with Qinglv Cyan Gradient & Brush Accent */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.75rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--shiqing) 0%, #0E3A43 100%);
  color: #FFFFFF !important;
  border: 1px solid var(--shiqing);
  box-shadow: 0 4px 15px rgba(26, 83, 92, 0.25);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: 0.6s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 83, 92, 0.35);
  color: #FFFFFF !important;
}

.btn-secondary {
  background: var(--bg-paper);
  color: var(--ink-black) !important;
  border: 1px solid var(--ink-black);
}

.btn-secondary:hover {
  background: var(--ink-black);
  color: #FFFFFF !important;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--shiqing) !important;
  border: 1px dashed var(--shiqing);
}

.btn-outline:hover {
  background: rgba(26, 83, 92, 0.08);
  border-style: solid;
}

/* Mobile Menu Button */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink-light);
  padding: 8px 12px;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--ink-black);
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(26, 83, 92, 0.08);
  border: 1px solid rgba(26, 83, 92, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--shiqing);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  color: var(--ink-black);
}

.hero-title span {
  background: linear-gradient(135deg, var(--shiqing) 0%, var(--shilv) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--ink-gray);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px dashed var(--ink-light);
}

.stat-item h4 {
  font-size: 1.8rem;
  color: var(--shiqing);
  font-family: var(--font-serif);
  margin-bottom: 4px;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  padding: 8px;
  background: #FFF;
  border: 1px solid var(--ink-black);
  box-shadow: 12px 12px 0px rgba(26, 83, 92, 0.15);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink-light);
}

.floating-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: #FFF;
  border: 1px solid var(--ink-black);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  box-shadow: 4px 4px 0px var(--gold-accent);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
}

.floating-badge-icon {
  width: 36px;
  height: 36px;
  background: rgba(45, 106, 79, 0.1);
  color: var(--shilv);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

/* Section Header Component */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-subtitle {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--shiqing);
  margin-bottom: 0.5rem;
  display: inline-block;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

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

/* Features Grid */
.features-section {
  padding: 4rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-black);
  padding: 2.25rem;
  border-radius: var(--radius-sm);
  position: relative;
  transition: var(--transition);
  box-shadow: 4px 4px 0px rgba(28, 37, 38, 0.08);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 8px 8px 0px rgba(26, 83, 92, 0.2);
  border-color: var(--shiqing);
}

.feature-icon {
  width: 54px;
  height: 54px;
  background: rgba(26, 83, 92, 0.08);
  border: 1px dashed var(--shiqing);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--shiqing);
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--ink-gray);
  margin-bottom: 0;
}

/* Pricing Section (Exact Reference Pricing) */
.pricing-section {
  padding: 5rem 0;
  background: linear-gradient(180deg, transparent 0%, rgba(26, 83, 92, 0.03) 50%, transparent 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  background: #FFFFFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: 6px 6px 0px rgba(28, 37, 38, 0.08);
}

.pricing-card.featured {
  border: 2px solid var(--shiqing);
  box-shadow: 8px 8px 0px rgba(26, 83, 92, 0.25);
  transform: translateY(-8px);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--shiqing), var(--shilv));
  color: #FFF;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 12px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(26, 83, 92, 0.3);
}

.plan-header {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px dashed var(--ink-light);
  margin-bottom: 1.5rem;
}

.plan-name {
  font-size: 1.4rem;
  color: var(--ink-black);
  margin-bottom: 1rem;
}

.plan-price {
  font-size: 2.8rem;
  font-weight: 900;
  font-family: var(--font-serif);
  color: var(--shiqing);
  line-height: 1;
}

.plan-price span {
  font-size: 1.1rem;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--ink-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.plan-features li {
  font-size: 0.95rem;
  color: var(--ink-gray);
  padding: 0.65rem 0;
  border-bottom: 1px dotted var(--ink-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-features li span.label {
  color: var(--ink-muted);
}

.plan-features li span.val {
  font-weight: 600;
  color: var(--ink-black);
}

.pricing-card .btn {
  width: 100%;
}

/* Audience Section */
.audience-section {
  padding: 4rem 0;
}

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

.audience-item {
  background: var(--bg-card);
  border: 1px solid var(--ink-light);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  text-align: center;
  transition: var(--transition);
}

.audience-item:hover {
  border-color: var(--shiqing);
  background: #FFF;
  box-shadow: 4px 4px 0px rgba(26, 83, 92, 0.1);
}

.audience-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

/* Tutorial Section */
.tutorial-section {
  padding: 5rem 0;
  background: var(--bg-paper-alt);
  border-top: 1px solid var(--ink-light);
  border-bottom: 1px solid var(--ink-light);
}

.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.65rem 1.5rem;
  background: #FFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  color: var(--ink-black);
}

.tab-btn.active, .tab-btn:hover {
  background: var(--shiqing);
  color: #FFF;
  border-color: var(--shiqing);
  box-shadow: 3px 3px 0px var(--gold-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.tutorial-card {
  background: #FFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  padding: 2.5rem;
  box-shadow: 6px 6px 0px rgba(28, 37, 38, 0.08);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-item {
  background: var(--bg-paper);
  border: 1px dashed var(--ink-light);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  position: relative;
}

.step-num {
  position: absolute;
  top: -12px;
  left: 16px;
  background: var(--shiqing);
  color: #FFF;
  font-size: 0.75rem;
  font-weight: 700;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-item h4 {
  font-size: 1.1rem;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--ink-gray);
  margin: 0;
}

/* Reviews Section */
.reviews-section {
  padding: 5rem 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.review-card {
  background: #FFF;
  border: 1px solid var(--ink-black);
  padding: 2rem;
  border-radius: var(--radius-sm);
  box-shadow: 4px 4px 0px rgba(28, 37, 38, 0.06);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.review-user h4 {
  font-size: 1.05rem;
  margin: 0;
}

.review-user p {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin: 0;
}

.stars {
  color: var(--gold-accent);
}

/* FAQ Accordion Section */
.faq-section {
  padding: 4rem 0 5rem;
}

.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #FFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: 3px 3px 0px rgba(28, 37, 38, 0.05);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.75rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink-black);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--shiqing);
  background: rgba(26, 83, 92, 0.02);
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.75rem;
  border-top: 1px dashed transparent;
}

.faq-item.open .faq-answer {
  max-height: 800px;
  padding: 1rem 1.75rem 1.5rem;
  border-top-color: var(--ink-light);
  transition: max-height 0.4s ease-in-out;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--ink-gray);
  margin-bottom: 0.75rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* Articles Directory Grid */
.articles-section {
  padding: 5rem 0;
  background: var(--bg-paper-alt);
  border-top: 1px solid var(--ink-light);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.article-card {
  background: #FFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: 4px 4px 0px rgba(28, 37, 38, 0.08);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--shiqing);
  box-shadow: 8px 8px 0px rgba(26, 83, 92, 0.2);
}

.article-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--shiqing);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.article-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--ink-black);
}

.article-card h3 a:hover {
  color: var(--shiqing);
}

.article-card p {
  font-size: 0.9rem;
  color: var(--ink-gray);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-muted);
  border-top: 1px dashed var(--ink-light);
  padding-top: 0.75rem;
}

/* Article Page Details */
.article-page {
  padding: 3rem 0 5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: 2rem;
}

.breadcrumb a {
  color: var(--ink-gray);
}

.article-wrapper {
  max-width: 880px;
  margin: 0 auto;
  background: #FFF;
  border: 1px solid var(--ink-black);
  border-radius: var(--radius-sm);
  padding: 3.5rem 3rem;
  box-shadow: 8px 8px 0px rgba(28, 37, 38, 0.08);
}

.article-header {
  border-bottom: 1px dashed var(--ink-light);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.article-title {
  font-size: 2.4rem;
  line-height: 1.3;
  margin-bottom: 1.25rem;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #2C3539;
}

.article-content h2 {
  font-size: 1.65rem;
  margin: 2.5rem 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--ink-light);
  color: var(--shiqing);
  position: relative;
}

.article-content h2::before {
  content: "▌";
  color: var(--gold-accent);
  margin-right: 8px;
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 2rem 0 1rem;
  color: var(--ink-black);
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

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

.article-cta-box {
  background: linear-gradient(135deg, rgba(26, 83, 92, 0.06), rgba(45, 106, 79, 0.06));
  border: 1px solid var(--shiqing);
  border-radius: var(--radius-sm);
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
}

.article-cta-box h4 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--shiqing);
}

.article-cta-box p {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.related-articles {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px dashed var(--ink-light);
}

/* Footer Section */
.site-footer {
  background: #182223;
  color: #A9B7B7;
  padding: 4rem 0 2rem;
  border-top: 2px solid var(--shiqing);
}

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

.footer-brand h3 {
  color: #FFF;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: #8A9A9A;
  font-size: 0.9rem;
}

.footer-col h4 {
  color: #FFF;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  position: relative;
}

.footer-col h4::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--shiqing-light);
  margin-top: 6px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #8A9A9A;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #FFF;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #6C7C7C;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.footer-legal-links a {
  color: #6C7C7C;
}

.footer-legal-links a:hover {
  color: #FFF;
}

/* Responsive Breakdown */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-stats {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 450px;
    margin: 0 auto;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .article-wrapper {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #FAF8F3;
    border-bottom: 1px solid var(--ink-black);
    padding: 1.5rem;
    gap: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}