/* ==========================================================================
   尼尔云 (NierCloud) 官网落地页 - Modern Skeuomorphism Design System
   Domain: nieryun.homes
   Style inspired by realistic tactile UI: soft gradients, 3D buttons, bevels, depth
   ========================================================================== */

:root {
  --primary: #4338ca;
  --primary-light: #6366f1;
  --primary-dark: #3730a3;
  --primary-gradient: linear-gradient(180deg, #5356e3 0%, #4338ca 100%);
  --accent-blue: #2563eb;
  --accent-blue-gradient: linear-gradient(180deg, #3b82f6 0%, #2563eb 60%, #1d4ed8 100%);
  --accent-green: #10b981;
  --accent-cyan: #06b6d4;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  /* Surfaces & Skeuomorphic Depth */
  --bg-page: #f1f4f9;
  --bg-page-gradient: radial-gradient(circle at 50% 0%, #fbfcfe 0%, #f1f4f9 100%);
  --surface-card: #ffffff;
  --surface-muted: #f8fafc;
  --surface-inset: #eef2f6;

  /* Text & Borders */
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-light: rgba(226, 232, 240, 0.9);
  --border-subtle: rgba(148, 163, 184, 0.2);

  /* Skeuomorphic Shadows & Insets */
  --shadow-skeuo-card: 
    0 1px 1px rgba(0, 0, 0, 0.04),
    0 4px 8px rgba(0, 0, 0, 0.04),
    0 16px 32px -8px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  --shadow-skeuo-card-hover: 
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 12px 24px -4px rgba(15, 23, 42, 0.12),
    0 24px 48px -12px rgba(99, 102, 241, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 1);

  --shadow-skeuo-button: 
    inset 0 1px 1px rgba(255, 255, 255, 0.45),
    inset 0 -1px 2px rgba(0, 0, 0, 0.2),
    0 4px 12px -2px rgba(37, 99, 235, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.06);

  --shadow-skeuo-button-pressed:
    inset 0 2px 5px rgba(0, 0, 0, 0.35),
    inset 0 -1px 1px rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.1);

  --shadow-skeuo-button-secondary:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    inset 0 -1px 1px rgba(0, 0, 0, 0.05),
    0 2px 6px rgba(15, 23, 42, 0.06),
    0 1px 2px rgba(0, 0, 0, 0.04);

  --shadow-inset-well:
    inset 0 2px 4px rgba(15, 23, 42, 0.06),
    inset 0 1px 2px rgba(0, 0, 0, 0.04),
    0 1px 0 rgba(255, 255, 255, 0.8);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-family);
  background: var(--bg-page-gradient);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Background Dynamic Floating Orbs */
.bg-ambient-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #818cf8, #c7d2fe);
  top: -100px;
  right: -50px;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #93c5fd, #e0e7ff);
  top: 40%;
  left: -150px;
  animation-duration: 22s;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #a7f3d0, #bfdbfe);
  bottom: 5%;
  right: 5%;
  animation-duration: 20s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 40px) scale(1.08); }
  100% { transform: translate(-25px, -30px) scale(0.95); }
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--primary);
}

/* Top Navigation Bar - Tactile Glass Header */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.04);
  transition: var(--transition-smooth);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--accent-blue-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  box-shadow: var(--shadow-skeuo-button);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

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

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
}

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

/* Tactile Buttons (Inspired by 图1) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: none;
  outline: none;
  user-select: none;
  transition: var(--transition-smooth);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-blue-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-skeuo-button);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
  box-shadow: 
    inset 0 1px 1px rgba(255, 255, 255, 0.5),
    0 8px 20px -2px rgba(37, 99, 235, 0.5),
    0 4px 6px rgba(0, 0, 0, 0.08);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-skeuo-button-pressed);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid rgba(203, 213, 225, 0.8);
  box-shadow: var(--shadow-skeuo-button-secondary);
}

.btn-secondary:hover {
  background: #f8fafc;
  color: var(--primary);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.btn-secondary:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn-pill {
  border-radius: var(--radius-pill);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-main);
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 70px 0 50px;
  text-align: center;
  position: relative;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px;
  background: #ffffff;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-skeuo-button-secondary);
  border: 1px solid rgba(226, 232, 240, 0.8);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 52px;
  font-weight: 850;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #0f172a;
}

.hero-title-gradient {
  background: linear-gradient(135deg, #1e293b 0%, #4338ca 50%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 48px;
}

.hero-tags-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 50px;
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.tag-badge svg {
  color: var(--accent-blue);
}

/* Skeuomorphic Demo Card (Reference 图1) */
.hero-mockup-wrapper {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.hero-skeuo-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 36px;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.8);
  position: relative;
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 18px;
  margin-bottom: 24px;
}

.mockup-dots {
  display: flex;
  gap: 8px;
}

.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.mockup-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.server-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.server-item {
  background: var(--surface-inset);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: left;
  box-shadow: var(--shadow-inset-well);
  border: 1px solid rgba(255, 255, 255, 0.6);
  position: relative;
  transition: var(--transition-smooth);
}

.server-item:hover {
  transform: translateY(-2px);
  background: #fff;
  box-shadow: 0 8px 16px -4px rgba(15, 23, 42, 0.08);
}

.server-flag {
  font-size: 20px;
  margin-bottom: 6px;
}

.server-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.server-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

.server-ping {
  color: var(--accent-green);
  font-weight: 700;
}

/* Core Features & Advantages */
.section-wrap {
  padding: 90px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 16px;
  color: #0f172a;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.9);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-skeuo-card-hover);
}

.feature-icon-well {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: var(--surface-inset);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-inset-well);
  border: 1px solid rgba(255, 255, 255, 0.7);
  margin-bottom: 22px;
}

.feature-icon-well svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-desc {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Pricing Section - Exactly matching 图2 */
.pricing-section {
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.4) 0%, rgba(224, 231, 255, 0.25) 100%);
  padding: 90px 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
  max-width: 1100px;
  margin: 0 auto;
}

/* Pricing Card styling based on 图2 */
.pricing-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 42px 32px 36px;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 0 1px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
}

/* Featured / Pro Card (Blue/Purple border & "最受欢迎" badge on top) */
.pricing-card.featured {
  border: 2px solid #6366f1;
  box-shadow: 0 16px 36px -10px rgba(99, 102, 241, 0.22);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: #4f46e5;
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.35);
  letter-spacing: 0.5px;
}

.plan-title {
  font-size: 18px;
  font-weight: 700;
  color: #475569;
  text-align: center;
  margin-bottom: 18px;
}

.plan-price-wrap {
  text-align: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f1f5f9;
}

.plan-currency {
  font-size: 26px;
  font-weight: 800;
  color: #0f172a;
  margin-right: 2px;
}

.plan-amount {
  font-size: 48px;
  font-weight: 900;
  color: #0f172a;
  letter-spacing: -1px;
}

.plan-cycle {
  font-size: 15px;
  color: #64748b;
  font-weight: 600;
}

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

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 14.5px;
  color: #334155;
  font-weight: 500;
  border-bottom: 1px dashed #f1f5f9;
}

.plan-feature-item:last-child {
  border-bottom: none;
}

.feature-check-icon {
  width: 18px;
  height: 18px;
  color: #10b981;
  flex-shrink: 0;
}

.pricing-btn-wrap {
  margin-top: auto;
}

.pricing-card .btn {
  width: 100%;
  padding: 14px 20px;
  font-size: 15px;
  border-radius: 12px;
}

.pricing-card.featured .btn {
  background: #4f46e5;
  color: #ffffff;
  box-shadow: 0 6px 16px -2px rgba(79, 70, 229, 0.45);
}

.pricing-card.featured .btn:hover {
  background: #4338ca;
}

.pricing-card:not(.featured) .btn {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #cbd5e1;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.pricing-card:not(.featured) .btn:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

/* Speed Test Simulator Section */
.speed-sim-section {
  padding: 70px 0;
}

.speed-sim-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 40px;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.9);
}

.sim-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.sim-metric-box {
  background: var(--surface-inset);
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-inset-well);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.sim-metric-val {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 4px;
}

.sim-metric-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

/* Knowledge Base / Articles Grid */
.articles-section {
  padding: 90px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-skeuo-card-hover);
}

.article-card-cover {
  height: 180px;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4338ca 100%);
  position: relative;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  backdrop-filter: blur(8px);
}

.article-cover-meta {
  color: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-card-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-title {
  font-size: 18px;
  font-weight: 750;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-main);
}

.article-card-title a {
  color: inherit;
}

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

.article-card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.article-read-link {
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-read-link:hover {
  gap: 8px;
}

/* FAQ Accordion Section */
.faq-section {
  padding: 90px 0;
  background: rgba(248, 250, 252, 0.6);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.03);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item.active {
  box-shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.08);
  border-color: rgba(99, 102, 241, 0.3);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  text-align: left;
  background: none;
  border: none;
  outline: none;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}

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

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 380px;
  padding: 0 28px 24px;
}

/* User Reviews / Testimonials */
.reviews-section {
  padding: 90px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--surface-inset);
  box-shadow: var(--shadow-inset-well);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--primary);
  font-size: 17px;
}

.review-user-info {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.review-verified {
  color: var(--accent-blue);
  font-size: 12px;
}

.review-role {
  font-size: 12px;
  color: var(--text-muted);
}

.review-stars {
  color: #fbbf24;
  margin-bottom: 12px;
  font-size: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex-grow: 1;
}

.review-date {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 14px;
  text-align: right;
}

/* CTA Banner Section */
.cta-banner-section {
  padding: 70px 0;
}

.cta-banner-card {
  background: linear-gradient(135deg, #1e1b4b 0%, #3730a3 50%, #1e40af 100%);
  border-radius: 32px;
  padding: 60px 48px;
  text-align: center;
  color: #ffffff;
  box-shadow: 0 20px 40px -10px rgba(30, 27, 75, 0.4);
  position: relative;
  overflow: hidden;
}

.cta-banner-card h2 {
  font-size: 38px;
  font-weight: 850;
  margin-bottom: 16px;
  color: #ffffff;
}

.cta-banner-card p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
  margin: 0 auto 36px;
}

.cta-banner-card .btn-primary {
  background: #ffffff;
  color: #1e1b4b;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  border: none;
}

.cta-banner-card .btn-primary:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  color: var(--primary);
}

/* Article Template Specific Styles */
.article-page-wrap {
  padding: 40px 0 80px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a {
  color: var(--text-muted);
}

.breadcrumb-nav a:hover {
  color: var(--primary);
}

.article-container {
  max-width: 900px;
  margin: 0 auto;
}

.article-main-card {
  background: #ffffff;
  border-radius: 28px;
  padding: 48px 56px;
  box-shadow: var(--shadow-skeuo-card);
  border: 1px solid rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}

.article-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 28px;
  margin-bottom: 36px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 16px;
}

.article-meta-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body {
  font-size: 16.5px;
  line-height: 1.85;
  color: #334155;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 800;
  color: #0f172a;
  margin: 44px 0 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid #eef2f6;
  position: relative;
}

.article-body h2::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--primary);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 750;
  color: #1e293b;
  margin: 28px 0 14px;
}

.article-body p {
  margin-bottom: 20px;
  text-align: justify;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 28px;
}

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

.article-body strong {
  color: #0f172a;
}

.article-callout {
  background: #f8fafc;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 28px 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.article-callout p {
  margin-bottom: 0;
  font-size: 15px;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.article-table th, .article-table td {
  padding: 14px 18px;
  border: 1px solid #e2e8f0;
  text-align: left;
}

.article-table th {
  background: #f1f5f9;
  font-weight: 700;
  color: #0f172a;
}

.article-table tr:hover {
  background: #f8fafc;
}

/* Article Internal Links Box */
.internal-links-box {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 36px 0;
  border: 1px solid #e2e8f0;
}

.internal-links-title {
  font-size: 16px;
  font-weight: 750;
  color: #0f172a;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.internal-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.internal-link-item {
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
}

.internal-link-item:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background: #ffffff;
  border-top: 1px solid rgba(226, 232, 240, 0.8);
  padding: 70px 0 35px;
  position: relative;
  z-index: 10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 14px;
  max-width: 320px;
}

.footer-title {
  font-size: 15px;
  font-weight: 750;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

/* Floating Registration Bar */
.floating-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 99;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translate(-50%, 100px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.floating-bar-text {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.floating-bar-text span {
  color: #38bdf8;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title { font-size: 42px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .sim-metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .server-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .internal-links-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .article-main-card { padding: 28px 20px; }
  .floating-bar { width: 92%; justify-content: space-between; padding: 10px 16px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
}