/* ==========================================================================
   XSUS Cloud (XSUS 云机场) - Soaring Sky & Cyber Rocket Design System
   Domain: xsusvpn.cyou
   Theme: Atmospheric Deep Sky Twilight with High-Speed Rocket Launch Aesthetics
   ========================================================================== */

:root {
  --bg-sky-top: #030714;
  --bg-sky-mid: #081630;
  --bg-sky-bottom: #0f2854;
  
  --bg-card: rgba(12, 22, 45, 0.7);
  --bg-card-hover: rgba(18, 34, 68, 0.88);
  
  --border-cyan: rgba(0, 229, 255, 0.2);
  --border-cyan-bright: rgba(0, 229, 255, 0.6);
  --border-flame: rgba(255, 102, 0, 0.5);
  
  --cyan-bright: #00e5ff;
  --blue-sky: #0088ff;
  --orange-flame: #ff6600;
  --yellow-flame: #ffcc00;
  
  --gradient-primary: linear-gradient(135deg, #00e5ff 0%, #0088ff 100%);
  --gradient-rocket: linear-gradient(135deg, #00e5ff 0%, #7000ff 50%, #ff0055 100%);
  --gradient-flame: linear-gradient(180deg, #ffff00 0%, #ff6600 50%, #ff0044 100%);
  
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #64748b;
  
  --container-width: 1240px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-sky-top);
  color: var(--text-primary);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--bg-sky-top) 0%, var(--bg-sky-mid) 40%, var(--bg-sky-bottom) 100%);
}

/* Atmospheric Sky Clouds & Stars Backdrop */
.stars-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.star {
  position: absolute;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
  animation: pulseStar var(--duration) infinite ease-in-out;
}

@keyframes pulseStar {
  0%, 100% { opacity: 0.2; transform: scale(0.7); }
  50% { opacity: 0.9; transform: scale(1.3); }
}

/* Drifting Sky Clouds */
.sky-cloud {
  position: absolute;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.06) 0%, rgba(0, 136, 255, 0.03) 50%, transparent 70%);
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
  animation: floatCloud 25s infinite ease-in-out alternate;
}

@keyframes floatCloud {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, -30px) scale(1.15); }
}

/* Layout Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(3, 7, 20, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 229, 255, 0.12);
  padding: 18px 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: 0 0 16px var(--cyan-bright);
  object-fit: cover;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--cyan-bright);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 26px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #030714;
  box-shadow: 0 4px 24px rgba(0, 229, 255, 0.45);
}

.btn-primary:hover {
  box-shadow: 0 6px 36px rgba(0, 229, 255, 0.75);
  transform: translateY(-2px);
}

.btn-rocket {
  background: linear-gradient(135deg, #ff6600 0%, #ff0055 100%);
  color: #fff;
  box-shadow: 0 4px 24px rgba(255, 102, 0, 0.45);
}

.btn-rocket:hover {
  box-shadow: 0 6px 36px rgba(255, 102, 0, 0.75);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--cyan-bright);
  color: #fff;
}

.btn-outline-cyan {
  background: rgba(0, 229, 255, 0.08);
  color: var(--cyan-bright);
  border: 1px solid var(--border-cyan-bright);
}

.btn-outline-cyan:hover {
  background: rgba(0, 229, 255, 0.2);
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.08rem;
  border-radius: var(--radius-md);
}

/* Hero Section with Soaring Rocket */
.hero {
  padding: 175px 0 120px;
  display: flex;
  align-items: center;
  min-height: 88vh;
  position: relative;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-cyan-bright);
  border-radius: 30px;
  color: var(--cyan-bright);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 22px;
  letter-spacing: 0.5px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff6600;
  box-shadow: 0 0 10px #ff6600;
  animation: pulseDot 1.5s infinite alternate;
}

@keyframes pulseDot {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.3); opacity: 1; }
}

.hero-content h1 {
  font-size: 3.8rem;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.12;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--cyan-bright);
  letter-spacing: 3px;
  margin-bottom: 32px;
  text-shadow: 0 0 24px rgba(0, 229, 255, 0.5);
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: nowrap;
}

/* ==========================================================================
   Soaring Rocket Graphic & Atmosphere Sky Motion
   ========================================================================== */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  height: 420px;
}

.rocket-sky-stage {
  position: relative;
  width: 360px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Speed Motion Lines moving down */
.speed-lines {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.speed-line {
  position: absolute;
  width: 2px;
  background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.6), transparent);
  border-radius: 2px;
  animation: speedPass 1.2s infinite linear;
}

.sl-1 { left: 20%; height: 80px; animation-delay: 0s; }
.sl-2 { left: 55%; height: 120px; animation-delay: 0.4s; }
.sl-3 { left: 80%; height: 60px; animation-delay: 0.8s; }

@keyframes speedPass {
  0% { transform: translateY(-100px); opacity: 0; }
  50% { opacity: 0.8; }
  100% { transform: translateY(400px); opacity: 0; }
}

/* Rocket Main Vessel (Angled Soaring Skyward) */
.rocket-vessel {
  position: relative;
  width: 140px;
  height: 240px;
  transform: rotate(35deg);
  animation: rocketHover 3.5s ease-in-out infinite alternate;
  z-index: 3;
}

@keyframes rocketHover {
  0% { transform: rotate(35deg) translate(0, 0); }
  100% { transform: rotate(35deg) translate(8px, -14px); }
}

/* Rocket SVG Body Styling */
.rocket-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 20px rgba(0, 229, 255, 0.6));
}

/* Dynamic Flame & Energy Plume */
.rocket-flame-plume {
  position: absolute;
  bottom: -90px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 110px;
  background: var(--gradient-flame);
  border-radius: 50% 50% 20% 20%;
  filter: blur(4px);
  box-shadow: 
    0 0 30px #ff6600,
    0 0 60px #ff0044;
  animation: flameThrust 0.15s infinite alternate ease-in-out;
  z-index: 1;
}

.rocket-flame-core {
  position: absolute;
  bottom: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 60px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 20px #ffffff;
  z-index: 2;
}

@keyframes flameThrust {
  0% { height: 100px; transform: translateX(-50%) scaleX(0.95); }
  100% { height: 125px; transform: translateX(-50%) scaleX(1.1); }
}

/* Thruster Smoke Clouds */
.thruster-cloud {
  position: absolute;
  bottom: -60px;
  width: 70px;
  height: 70px;
  background: radial-gradient(circle, rgba(255, 102, 0, 0.4) 0%, rgba(0, 229, 255, 0.2) 60%, transparent 80%);
  border-radius: 50%;
  filter: blur(15px);
  animation: smokeDisperse 1.8s infinite ease-out;
}

.tc-1 { left: 10px; animation-delay: 0s; }
.tc-2 { right: 10px; animation-delay: 0.6s; }

@keyframes smokeDisperse {
  0% { transform: translateY(0) scale(0.6); opacity: 0.8; }
  100% { transform: translateY(80px) scale(1.6); opacity: 0; }
}

/* Floating Trajectory Badges */
.stat-pill {
  position: absolute;
  padding: 10px 20px;
  background: rgba(8, 22, 48, 0.85);
  border: 1px solid var(--border-cyan-bright);
  border-radius: 30px;
  backdrop-filter: blur(14px);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 10;
}

.pill-1 { top: 10px; left: -30px; animation: floatPill 5s ease-in-out infinite; }
.pill-2 { bottom: 20px; right: -25px; animation: floatPill 6s ease-in-out infinite 1.2s; }

@keyframes floatPill {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border-cyan-bright);
  border-radius: 20px;
  color: var(--cyan-bright);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.08rem;
}

/* Features Section */
.features-section {
  padding: 90px 0;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: var(--transition);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-cyan-bright);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 229, 255, 0.2);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-cyan-bright);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-bright);
  font-size: 1.6rem;
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: #fff;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.96rem;
}

/* Pricing Section */
.pricing-section {
  padding: 100px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  backdrop-filter: blur(16px);
}

.pricing-card:hover {
  border-color: var(--border-cyan-bright);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.pricing-card.popular {
  border: 2px solid var(--cyan-bright);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
  background: rgba(14, 30, 62, 0.88);
}

.popular-badge {
  position: absolute;
  top: -15px;
  right: 28px;
  background: linear-gradient(135deg, #00e5ff 0%, #0088ff 100%);
  color: #030714;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 16px;
  border-radius: 14px;
  text-transform: uppercase;
}

.pricing-header h3 {
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 8px;
}

.pricing-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.price {
  font-size: 3rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 28px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.pricing-features li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-size: 0.96rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.pricing-features li svg {
  color: var(--cyan-bright);
  flex-shrink: 0;
}

/* Articles Grid Section */
.articles-section {
  padding: 100px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 30px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card:hover {
  border-color: var(--border-cyan-bright);
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.article-meta {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--cyan-bright);
  margin-bottom: 14px;
  font-weight: 600;
}

.article-card h3 {
  font-size: 1.2rem;
  margin-bottom: 14px;
  line-height: 1.45;
}

.article-card h3 a {
  color: #fff;
  text-decoration: none;
  transition: var(--transition);
}

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

.article-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.6;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.read-more {
  color: var(--cyan-bright);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.read-more:hover {
  gap: 10px;
  color: #fff;
}

/* User Reviews Section */
.reviews-section {
  padding: 90px 0;
  background: rgba(5, 14, 32, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 32px;
}

.stars {
  color: #ffd700;
  margin-bottom: 16px;
  font-size: 1.15rem;
  letter-spacing: 2px;
}

.review-text {
  color: var(--text-primary);
  font-size: 0.98rem;
  font-style: italic;
  margin-bottom: 24px;
  line-height: 1.65;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00e5ff, #7000ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
}

.user-info h4 {
  font-size: 0.98rem;
  color: #fff;
}

.user-info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* FAQ Section */
.faq-section {
  padding: 100px 0;
}

.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 22px 28px;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question:hover {
  color: var(--cyan-bright);
}

.faq-answer {
  padding: 0 28px 22px;
  color: var(--text-secondary);
  font-size: 0.98rem;
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 4px;
  padding-top: 18px;
  line-height: 1.7;
}

.faq-item.active {
  border-color: var(--border-cyan-bright);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--cyan-bright);
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

/* Article Page Styling */
.article-page {
  padding: 150px 0 90px;
}

.breadcrumb {
  display: flex;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--cyan-bright);
  text-decoration: none;
}

.article-header {
  margin-bottom: 44px;
}

.article-header h1 {
  font-size: 2.35rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.32;
  margin-bottom: 18px;
}

.article-body {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(16px);
  color: #e2e8f0;
  font-size: 1.08rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.65rem;
  color: #fff;
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-cyan);
}

.article-body h3 {
  font-size: 1.35rem;
  color: var(--cyan-bright);
  margin: 30px 0 14px;
}

.article-body p {
  margin-bottom: 22px;
}

.article-body ul, .article-body ol {
  margin-bottom: 28px;
  padding-left: 28px;
}

.article-body li {
  margin-bottom: 10px;
}

.article-body a {
  color: var(--cyan-bright);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-body a:hover {
  color: #fff;
}

.article-cta {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15) 0%, rgba(255, 102, 0, 0.15) 100%);
  border: 1px solid var(--border-cyan-bright);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  margin: 44px 0;
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.18);
}

/* Footer & PBN Links (Core Task 2) */
footer {
  background: #02050f;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 44px 0;
  text-align: center;
  position: relative;
  z-index: 2;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-friend-links {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 10px;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.footer-friend-links span {
  opacity: 0.5;
}

.footer-friend-links a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-friend-links a:hover {
  color: var(--cyan-bright);
  text-decoration: underline;
}

/* Mobile Breakpoints */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.8rem;
  }
  
  .hero-buttons {
    flex-wrap: wrap;
    justify-content: center;
  }

  .rocket-sky-stage {
    width: 300px;
    height: 340px;
    margin-top: 20px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-content h1 {
    font-size: 2.3rem;
  }
  
  .hero-subtitle {
    font-size: 1.4rem;
  }
  
  .article-body {
    padding: 26px;
  }
}