/* X云 Network Accelerator - Minimal Monochrome Brutalist & Paper Texture + Rainbow Tints */

:root {
  --bg-paper: #f4f3ef;
  --bg-card: #ffffff;
  --bg-card-hover: #faf9f6;
  --border-black: #000000;
  --border-muted: #d0cecb;

  --text-main: #0a0a0a;
  --text-muted: #4a4a4a;
  --text-dim: #717171;

  --accent-black: #000000;
  --accent-white: #ffffff;

  /* Vibrant Rainbow Tint Gradients */
  --rainbow-gradient: linear-gradient(90deg, #ff4545, #ff9f1c, #ffe600, #2ec4b6, #3a86ff, #8338ec);
  --rainbow-gradient-vertical: linear-gradient(180deg, #ff4545, #ff9f1c, #2ec4b6, #3a86ff, #8338ec);
  --rainbow-subtle: linear-gradient(135deg, rgba(255, 69, 69, 0.1), rgba(255, 159, 28, 0.1), rgba(46, 196, 182, 0.1), rgba(58, 134, 255, 0.1), rgba(131, 56, 236, 0.1));

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  --max-width: 1200px;
  
  /* Brutalist Geometry */
  --radius-none: 0px;
  --shadow-brutal: 4px 4px 0px #000000;
  --shadow-brutal-hover: 6px 6px 0px #000000;
  --shadow-brutal-sm: 2px 2px 0px #000000;
  --shadow-rainbow-hover: 5px 5px 0px #000000, 0 0 15px rgba(255, 69, 69, 0.35);
  
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-paper);
  /* Dot Grain Paper Texture Overlay */
  background-image: radial-gradient(rgba(0, 0, 0, 0.12) 0.8px, transparent 0.8px);
  background-size: 18px 18px;
  color: var(--text-main);
  font-family: var(--font-sans);
  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;
}

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

.section {
  padding: 5rem 0;
  position: relative;
}

/* Rainbow Tinted Text Highlight */
.text-gradient {
  background: var(--rainbow-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  position: relative;
}

.text-gradient::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

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

.section-tag {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  background: #000000;
  color: #ffffff;
  border-radius: var(--radius-none);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  position: relative;
  box-shadow: 3px 3px 0px #000000;
}

.section-tag::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  height: 3px;
  background: var(--rainbow-gradient);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  font-weight: 500;
}

/* Square Brutalist Buttons with Rainbow Hover Tints */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 800;
  border-radius: var(--radius-none);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid var(--border-black);
  white-space: nowrap;
  letter-spacing: 0.5px;
  position: relative;
}

.btn-primary {
  background: #000000;
  color: #ffffff;
  box-shadow: var(--shadow-brutal);
}

.btn-primary:hover {
  background: #ffffff;
  color: #000000;
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-rainbow-hover);
  border-image: var(--rainbow-gradient) 1;
}

.btn-secondary {
  background: #ffffff;
  color: #000000;
  box-shadow: var(--shadow-brutal);
}

.btn-secondary:hover {
  background: #000000;
  color: #ffffff;
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-rainbow-hover);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-paper);
  border-bottom: 2px solid var(--border-black);
  transition: var(--transition);
}

.header::after {
  content: "";
  display: block;
  height: 3px;
  width: 100%;
  background: var(--rainbow-gradient);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -1px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: #000000;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 900;
  font-size: 1.1rem;
  position: relative;
  overflow: hidden;
}

.brand-icon::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--rainbow-gradient);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 700;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  text-decoration: none;
}

.nav-link:hover::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--rainbow-gradient);
}

.mobile-toggle {
  display: none;
  background: #ffffff;
  border: 2px solid var(--border-black);
  color: var(--text-main);
  font-size: 1.4rem;
  font-weight: 900;
  cursor: pointer;
  padding: 0.2rem 0.6rem;
  box-shadow: var(--shadow-brutal-sm);
}

/* Hero Section */
.hero {
  padding-top: 8.5rem;
  padding-bottom: 5rem;
  overflow: hidden;
}

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

.hero-content h1 {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -1.5px;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.hero-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  list-style: none;
  padding-top: 1.5rem;
  border-top: 2px solid var(--border-black);
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero-feature-item svg {
  color: #000000;
  stroke-width: 3;
}

/* Monochrome Brutalist Network Dashboard + Rainbow Accents */
.dashboard-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 1.75rem;
  box-shadow: var(--shadow-brutal);
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 2px solid var(--border-black);
}

.dashboard-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.6rem;
  background: #000000;
  color: #ffffff;
  border: 1px solid var(--border-black);
  border-radius: var(--radius-none);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  position: relative;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--rainbow-gradient);
  border-radius: 50%;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { opacity: 0.3; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.1); }
  100% { opacity: 0.3; transform: scale(0.9); }
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  transition: var(--transition);
  position: relative;
}

.node-item:hover {
  background: #000000;
  color: #ffffff;
  border-left: 5px solid;
  border-image: var(--rainbow-gradient-vertical) 1;
}

.node-item:hover .node-protocol,
.node-item:hover .node-ping {
  color: #ffffff;
}

.node-item:hover .node-bar {
  background: rgba(255, 255, 255, 0.3);
}

.node-item:hover .node-bar-fill {
  background: var(--rainbow-gradient);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.node-flag {
  font-size: 1.2rem;
}

.node-name {
  font-size: 0.9rem;
  font-weight: 800;
}

.node-protocol {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.node-stats {
  text-align: right;
}

.node-ping {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--text-main);
}

.node-bar {
  width: 65px;
  height: 5px;
  background: #e0ded8;
  border: 1px solid var(--border-black);
  margin-top: 4px;
}

.node-bar-fill {
  height: 100%;
  background: var(--rainbow-gradient);
}

.dashboard-footer {
  margin-top: 1.25rem;
  padding-top: 0.85rem;
  border-top: 2px solid var(--border-black);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  font-weight: 700;
}

/* Bento Grid Cards + Rainbow Border Top on Hover */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.bento-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 2.25rem 1.75rem;
  transition: var(--transition);
  box-shadow: var(--shadow-brutal);
  position: relative;
}

.bento-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-rainbow-hover);
}

.bento-card:hover::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  height: 4px;
  background: var(--rainbow-gradient);
}

.bento-icon {
  width: 48px;
  height: 48px;
  background: #000000;
  color: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  position: relative;
}

.bento-icon::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--rainbow-gradient);
}

.bento-title {
  font-size: 1.3rem;
  font-weight: 900;
  margin-bottom: 0.75rem;
}

.bento-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Global Nodes Section */
.nodes-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.node-stat-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 1.75rem 1rem;
  text-align: center;
  box-shadow: var(--shadow-brutal);
  position: relative;
  transition: var(--transition);
}

.node-stat-card:hover {
  box-shadow: var(--shadow-rainbow-hover);
  transform: translate(-2px, -2px);
}

.node-stat-num {
  font-size: 2.25rem;
  font-weight: 900;
  font-family: var(--font-mono);
  background: var(--rainbow-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
}

.node-stat-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* AI & Streaming Section */
.feature-tabs-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.feature-box {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 2.25rem;
  box-shadow: var(--shadow-brutal);
  position: relative;
}

.feature-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

.feature-box-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.feature-box-header svg {
  stroke: #000000 !important;
  stroke-width: 2.5;
}

.feature-box-title {
  font-size: 1.35rem;
  font-weight: 900;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.service-tag {
  padding: 0.45rem 0.85rem;
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.service-tag:hover {
  background: #000000;
  color: #ffffff;
  border-color: #000000;
}

.service-tag span {
  width: 7px;
  height: 7px;
  border-radius: 0%;
  background: var(--rainbow-gradient);
}

/* SaaS Pricing Section with Rainbow Featured Badge & Accents */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-brutal);
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-rainbow-hover);
}

.pricing-card.featured {
  background: #000000;
  color: #ffffff;
  border: 3px solid var(--border-black);
  box-shadow: 6px 6px 0px #000000, 0 0 20px rgba(255, 69, 69, 0.25);
}

.pricing-card.featured::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: var(--rainbow-gradient);
}

.pricing-card.featured .pricing-plan-desc,
.pricing-card.featured .pricing-price span,
.pricing-card.featured .pricing-feature-item {
  color: #d0d0d0;
}

.pricing-card.featured .pricing-price {
  color: #ffffff;
}

.pricing-card.featured .btn-primary {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.pricing-card.featured .btn-primary:hover {
  background: var(--rainbow-gradient);
  color: #ffffff;
  border-color: #000000;
}

.featured-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--rainbow-gradient);
  color: #000000;
  border: 2px solid #000000;
  padding: 0.25rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
  box-shadow: 2px 2px 0px #000000;
}

.pricing-plan-name {
  font-size: 1.4rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.pricing-plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.pricing-price {
  font-size: 2.75rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--text-main);
  margin-bottom: 1.75rem;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

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

.pricing-features {
  list-style: none;
  margin-bottom: 2.25rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
}

.pricing-feature-item svg {
  color: #000000;
  stroke-width: 3;
  flex-shrink: 0;
}

.pricing-card.featured .pricing-feature-item svg {
  color: #ffffff;
}

/* SEO Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.article-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-brutal);
  transition: var(--transition);
  position: relative;
}

.article-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-rainbow-hover);
}

.article-card:hover::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  height: 4px;
  background: var(--rainbow-gradient);
}

.article-category {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: #000000;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.6rem;
  display: inline-block;
}

.article-card-title {
  font-size: 1.2rem;
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.article-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  padding-top: 1rem;
  border-top: 2px solid var(--border-black);
}

.read-more-link {
  color: #000000;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.read-more-link:hover {
  gap: 0.5rem;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.testimonial-card {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 2rem;
  box-shadow: var(--shadow-brutal);
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 500;
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-none);
  background: #000000;
  border: 2px solid var(--border-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  color: #ffffff;
  position: relative;
}

.user-avatar::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--rainbow-gradient);
}

.user-info h4 {
  font-size: 0.95rem;
  font-weight: 800;
}

.user-info p {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* FAQ Accordion */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-item {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-brutal-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-rainbow-hover);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.4rem;
  font-weight: 900;
  transition: transform 0.2s ease;
  color: #000000;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  padding: 0 1.75rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.75rem 1.5rem 1.75rem;
  border-top: 1px solid var(--border-muted);
}

/* Article Detail Page Layout */
.article-detail-container {
  max-width: 860px;
  margin: 8.5rem auto 4rem auto;
  padding: 0 1.5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.breadcrumb a {
  color: var(--text-main);
  font-weight: 700;
  text-decoration: underline;
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--border-black);
  position: relative;
}

.article-header::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

.article-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.5px;
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-weight: 600;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 900;
  color: var(--text-main);
  margin: 2.75rem 0 1.25rem 0;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border-black);
  position: relative;
}

.article-content h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 4px;
  background: var(--rainbow-gradient);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 2rem 0 1rem 0;
}

.article-content p {
  margin-bottom: 1.35rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.35rem;
  padding-left: 1.75rem;
}

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.92rem;
  background: #ffffff;
  border: 2px solid var(--border-black);
  box-shadow: var(--shadow-brutal-sm);
}

.article-content th, .article-content td {
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--border-black);
  text-align: left;
}

.article-content th {
  background: #000000;
  color: #ffffff;
  font-weight: 800;
}

.article-cta-box {
  background: #ffffff;
  border: 2px solid var(--border-black);
  border-radius: var(--radius-none);
  padding: 2.5rem;
  text-align: center;
  margin: 3.5rem 0;
  box-shadow: var(--shadow-brutal);
  position: relative;
}

.article-cta-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

.article-cta-box h3 {
  margin-top: 0;
  font-size: 1.5rem;
  font-weight: 900;
}

.related-articles {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 2px solid var(--border-black);
}

/* Footer */
.footer {
  background: var(--bg-paper);
  border-top: 2px solid var(--border-black);
  padding: 4.5rem 0 2.5rem 0;
  margin-top: 4.5rem;
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--rainbow-gradient);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 1.25rem;
  max-width: 340px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #000000;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 2px solid var(--border-black);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-weight: 600;
}

.footer-friendly-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-friendly-links span {
  color: var(--text-dim);
}

.footer-friendly-links a {
  color: var(--text-main);
  font-weight: 700;
  text-decoration: underline;
  transition: var(--transition);
}

.footer-friendly-links a:hover {
  background: var(--rainbow-gradient);
  color: #ffffff;
  padding: 0.1rem 0.4rem;
}

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

  .bento-grid, .pricing-grid, .articles-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .feature-tabs-content {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .nav-links {
    position: fixed;
    top: 4.5rem;
    left: 0;
    width: 100%;
    background: var(--bg-paper);
    flex-direction: column;
    padding: 2.5rem 1.5rem;
    gap: 1.5rem;
    border-bottom: 2px solid var(--border-black);
    transform: translateY(-150%);
    transition: transform 0.3s ease-in-out;
    box-shadow: var(--shadow-brutal);
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .mobile-toggle {
    display: block;
  }

  .bento-grid, .pricing-grid, .articles-grid, .testimonials-grid, .nodes-overview {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .article-title {
    font-size: 1.9rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .pricing-price {
    font-size: 2.2rem;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}