/* ===================================================================
   CloudFox - Smoked-Quartz Optical-Prism Luxury UI Design
   Photon-Chamber Palette | Refractive Crystal Bento Architecture
   Pure Native CSS | Zero Dependencies | Blazing Fast Loading
   =================================================================== */

:root {
  /* Light Mode (Default) - Frosted Crystal Quartz */
  --bg-primary: #f6f8fc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(245, 248, 255, 0.95);
  --bg-slab: rgba(255, 255, 255, 0.82);
  --bg-glass: rgba(255, 255, 255, 0.88);
  --bg-badge: rgba(34, 197, 94, 0.08);

  --text-primary: #090d16;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-silver: #090d16;

  --border-color: rgba(226, 232, 240, 0.85);
  --border-slab: rgba(15, 23, 42, 0.08);
  --border-focus: #3b82f6;

  /* Chromatic Dispersion Palette */
  --emerald-green: #22c55e;
  --emerald-glow: rgba(34, 197, 94, 0.35);
  --cobalt-blue: #3b82f6;
  --cobalt-glow: rgba(59, 130, 246, 0.35);
  --prism-gradient: linear-gradient(135deg, #22c55e 0%, #3b82f6 50%, #8b5cf6 100%);
  --silver-gradient: linear-gradient(180deg, #090d16 0%, #334155 60%, #64748b 100%);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 12px 30px -6px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 48px -12px rgba(15, 23, 42, 0.12);
  --shadow-crystal: 0 20px 40px -10px rgba(15, 23, 42, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);

  --container-max: 1240px;
  --header-height: 74px;
}

[data-theme="dark"] {
  /* Dark Mode - Deep Photon-Chamber & Smoked-Quartz Architecture */
  --bg-primary: #050608;
  --bg-secondary: #0a0d14;
  --bg-card: rgba(14, 18, 28, 0.75);
  --bg-card-hover: rgba(20, 26, 40, 0.85);
  --bg-slab: rgba(12, 16, 25, 0.82);
  --bg-glass: rgba(5, 6, 8, 0.85);
  --bg-badge: rgba(34, 197, 94, 0.12);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-silver: #f1f5f9;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-slab: rgba(255, 255, 255, 0.1);
  --border-focus: #22c55e;

  --emerald-glow: rgba(34, 197, 94, 0.45);
  --cobalt-glow: rgba(59, 130, 246, 0.45);
  --silver-gradient: linear-gradient(180deg, #ffffff 0%, #e2e8f0 45%, #94a3b8 100%);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 16px 36px -8px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 30px 60px -15px rgba(0, 0, 0, 0.8);
  --shadow-crystal: 0 25px 50px -12px rgba(0, 0, 0, 0.7), inset 1px 1px 0 rgba(255, 255, 255, 0.12), inset -1px -1px 0 rgba(0, 0, 0, 0.6);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ================= Header & Navbar ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-base), border-color var(--transition-base);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo - Official CloudFox Bold Wordmark */
.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.brand-wordmark {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.035em;
  line-height: 1;
  user-select: none;
}

/* Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 550;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 8px 4px;
}

.nav-link:hover {
  color: var(--emerald-green);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--emerald-green);
  transition: width var(--transition-fast);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--emerald-green);
}

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

/* Highlight badge for "推荐资讯" */
.nav-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  margin-left: 4px;
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.4);
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Refined & Transparent Glassmorphic Theme Toggle */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  color: var(--emerald-green);
  border-color: var(--emerald-green);
  transform: translateY(-1px);
  box-shadow: 0 0 16px var(--emerald-glow);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-slow);
}

.theme-icon-sun {
  display: none;
}
.theme-icon-moon {
  display: block;
}

[data-theme="dark"] .theme-icon-sun {
  display: block;
}
[data-theme="dark"] .theme-icon-moon {
  display: none;
}

/* CTA Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* Emerald Luxury CTA Button */
.btn-emerald {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-emerald::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.btn-emerald:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(34, 197, 94, 0.5);
  filter: brightness(1.08);
}

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

/* Dark Smoked-Quartz Outline Button */
.btn-quartz {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}

.btn-quartz:hover {
  border-color: var(--emerald-green);
  color: var(--emerald-green);
  transform: translateY(-2px);
  box-shadow: 0 0 16px var(--emerald-glow);
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ================= Refractive Crystal-Bento Hero Section ================= */
.hero-section {
  position: relative;
  padding: 70px 0 60px;
  overflow: hidden;
}

/* Optical Prism Chamber Light Spots */
.hero-photon-bg {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, rgba(59, 130, 246, 0.08) 45%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .hero-photon-bg {
  background: radial-gradient(circle, rgba(34, 197, 94, 0.18) 0%, rgba(59, 130, 246, 0.12) 40%, transparent 70%);
}

.hero-main-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.hero-left-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-optical-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--bg-badge);
  border: 1px solid rgba(34, 197, 94, 0.3);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--emerald-green);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.pill-core-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--emerald-green);
  box-shadow: 0 0 10px var(--emerald-green);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
}

/* Monumental Silver Gradient Headline */
.hero-monumental-headline {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

.silver-gradient {
  background: var(--silver-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.chromatic-accent {
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-brief-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 34px;
  max-width: 580px;
}

.hero-cta-pills {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Top-Right 3D Holographic Orbital Ring System */
.hero-orbital-wrapper {
  position: relative;
  width: 100%;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbital-ring-container {
  position: relative;
  width: 320px;
  height: 320px;
  perspective: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbital-core {
  position: absolute;
  width: 76px;
  height: 76px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, #22c55e 0%, #3b82f6 70%, transparent 100%);
  box-shadow: 0 0 50px rgba(34, 197, 94, 0.7), 0 0 80px rgba(59, 130, 246, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  animation: core-breathe 4s ease-in-out infinite alternate;
}

@keyframes core-breathe {
  0% { transform: scale(0.92); filter: drop-shadow(0 0 20px rgba(34, 197, 94, 0.6)); }
  100% { transform: scale(1.08); filter: drop-shadow(0 0 35px rgba(59, 130, 246, 0.8)); }
}

.orbital-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid transparent;
  pointer-events: none;
}

.ring-1 {
  width: 280px;
  height: 280px;
  border-top: 2px solid var(--emerald-green);
  border-bottom: 2px solid var(--cobalt-blue);
  animation: rotate-ring-1 12s linear infinite;
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
}

.ring-2 {
  width: 220px;
  height: 220px;
  border-left: 2px solid #8b5cf6;
  border-right: 2px solid var(--emerald-green);
  animation: rotate-ring-2 9s linear infinite reverse;
}

.ring-3 {
  width: 170px;
  height: 170px;
  border: 1px dashed rgba(255, 255, 255, 0.3);
  animation: rotate-ring-3 18s linear infinite;
}

@keyframes rotate-ring-1 {
  0% { transform: rotateX(65deg) rotateY(15deg) rotateZ(0deg); }
  100% { transform: rotateX(65deg) rotateY(15deg) rotateZ(360deg); }
}

@keyframes rotate-ring-2 {
  0% { transform: rotateX(45deg) rotateY(-35deg) rotateZ(0deg); }
  100% { transform: rotateX(45deg) rotateY(-35deg) rotateZ(360deg); }
}

@keyframes rotate-ring-3 {
  0% { transform: rotateX(75deg) rotateY(40deg) rotateZ(0deg); }
  100% { transform: rotateX(75deg) rotateY(40deg) rotateZ(360deg); }
}

/* SVG Laser Beam Container (Connects Core to 35ms Readout on Hover) */
.laser-beam-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  overflow: visible;
}

.laser-path {
  stroke: var(--emerald-green);
  stroke-width: 2.5;
  stroke-linecap: round;
  fill: none;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  filter: drop-shadow(0 0 8px #22c55e) drop-shadow(0 0 16px #22c55e);
  transition: stroke-dashoffset 0.4s ease-out, opacity 0.3s ease;
  opacity: 0;
}

.laser-active .laser-path {
  stroke-dashoffset: 0;
  opacity: 1;
}

/* ================= Bottom Bento Modules (Smoked Quartz Slabs) ================= */
.hero-bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  position: relative;
  z-index: 3;
}

.crystal-slab {
  background: var(--bg-slab);
  border: 1px solid var(--border-slab);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-crystal);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  transform-style: preserve-3d;
}

/* Bevel-Cut Edge & Internal Snell's-law Caustic Highlight */
.crystal-slab::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--emerald-green), var(--cobalt-blue), transparent);
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.crystal-slab::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.crystal-slab:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 197, 94, 0.4);
  box-shadow: 0 28px 56px -12px rgba(0, 0, 0, 0.7), 0 0 24px var(--emerald-glow);
}

.crystal-slab:hover::before {
  opacity: 1;
}

.crystal-slab:hover::after {
  opacity: 1;
}

.slab-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.slab-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--emerald-green);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.slab-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.76rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.status-dot-active {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--emerald-green);
  box-shadow: 0 0 6px var(--emerald-green);
}

/* Sharp "35 ms" Readout Module */
.latency-readout-wrap {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
}

.latency-number {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  transition: color var(--transition-fast);
}

.laser-active .latency-number {
  color: var(--emerald-green);
  text-shadow: 0 0 20px var(--emerald-green);
}

.latency-unit {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--emerald-green);
}

.latency-chart-svg {
  width: 100%;
  height: 48px;
  margin-bottom: 14px;
  overflow: visible;
}

.slab-metrics-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.metric-val {
  font-weight: 700;
  color: var(--text-primary);
}

/* Floating Media Badges */
.floating-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.floating-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.floating-badge:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cobalt-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.badge-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ================= Shared Sections ================= */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--emerald-green);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 850;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 14px;
  line-height: 1.28;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ================= 3 Core Advantages Cards ================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--prism-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(34, 197, 94, 0.35);
}

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

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.12) 0%, rgba(59, 130, 246, 0.12) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--emerald-green);
  margin-bottom: 24px;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 750;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-top: 1px dashed var(--border-color);
  padding-top: 20px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-list svg {
  color: var(--emerald-green);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ================= Showcase: Streaming & AI Support ================= */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.showcase-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.badge-streaming {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.badge-ai {
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
}

.showcase-title {
  font-size: 1.65rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.showcase-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.app-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.app-pill:hover {
  border-color: var(--emerald-green);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.app-pill-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.showcase-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.showcase-metric {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--text-primary);
}

.showcase-metric svg {
  color: var(--emerald-green);
}

/* ================= Realistic Pricing Table ================= */
.pricing-section {
  background: linear-gradient(180deg, transparent 0%, rgba(34, 197, 94, 0.02) 50%, transparent 100%);
}

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

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--emerald-green);
  box-shadow: 0 12px 36px -6px rgba(34, 197, 94, 0.25);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
  text-transform: uppercase;
}

.pricing-header {
  margin-bottom: 20px;
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  min-height: 40px;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.pricing-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--emerald-green);
}

.pricing-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-period span {
  font-size: 0.8rem;
  color: var(--emerald-green);
  margin-left: 6px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.pricing-feature-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--emerald-green);
}

.pricing-feature-item.disabled {
  color: var(--text-muted);
  opacity: 0.55;
}

.pricing-feature-item.disabled svg {
  color: var(--text-muted);
}

.pricing-action {
  margin-top: auto;
}

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

.pricing-guarantee {
  margin-top: 36px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* ================= Reviews ================= */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
  backdrop-filter: blur(16px);
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(34, 197, 94, 0.3);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: #fbbf24;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.68;
  margin-bottom: 24px;
  flex-grow: 1;
  font-style: italic;
}

.reviewer-info {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.reviewer-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.reviewer-role {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ================= FAQ Accordion ================= */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: rgba(34, 197, 94, 0.35);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  cursor: pointer;
  user-select: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 260px;
  padding: 0 24px 22px;
}

/* ================= CTA Bottom Banner ================= */
.cta-banner-section {
  padding: 60px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(14, 18, 28, 0.9) 0%, rgba(10, 13, 20, 0.95) 100%);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.6), 0 0 30px rgba(34, 197, 94, 0.15);
}

.cta-banner h2 {
  font-size: 2.3rem;
  font-weight: 850;
  margin-bottom: 14px;
}

.cta-banner p {
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 32px;
  opacity: 0.9;
  color: #cbd5e1;
}

/* ================= Footer ================= */
/* User requirement: "页脚只保留这四个标题，内容打开新的页面展示。"
   Four titles: 网站地图, 关于我们, 服务条款, 隐私政策 */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 36px;
  margin-top: auto;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.footer-link:hover {
  color: var(--emerald-green);
  background-color: var(--bg-badge);
}

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

/* ================= Insights / Articles Grid Styling ================= */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 32px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 197, 94, 0.4);
  box-shadow: var(--shadow-md), 0 0 20px var(--emerald-glow);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-category {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-badge);
  color: var(--emerald-green);
  font-weight: 700;
}

.article-title {
  font-size: 1.28rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-snippet {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-link {
  font-weight: 600;
  color: var(--emerald-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-link:hover {
  text-decoration: underline;
}

/* ================= Inner Page Layout ================= */
.page-container {
  max-width: 880px;
  margin: 40px auto 80px;
  padding: 0 24px;
}

.page-header-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.page-header-box .badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--emerald-green);
  background: var(--bg-badge);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.page-header-box h1 {
  font-size: 2.3rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.page-header-box p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
  box-shadow: var(--shadow-sm);
  line-height: 1.8;
  color: var(--text-secondary);
}

.content-card h2 {
  font-size: 1.45rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.content-card h2:first-of-type {
  margin-top: 0;
}

.content-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 20px 0 10px;
}

.content-card p {
  margin-bottom: 16px;
}

.content-card ul, .content-card ol {
  padding-left: 22px;
  margin-bottom: 20px;
}

.content-card li {
  margin-bottom: 8px;
}

.callout-box {
  background: var(--bg-badge);
  border-left: 4px solid var(--emerald-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.sitemap-group {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sitemap-group h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sitemap-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sitemap-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition-fast);
}

.sitemap-list a:hover {
  color: var(--emerald-green);
}

/* ================= Long-form SEO Article & Reader Styling ================= */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--emerald-green);
}

.breadcrumbs .sep {
  opacity: 0.5;
}

.article-container {
  max-width: 1200px;
  margin: 30px auto 80px;
  padding: 0 24px;
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

.article-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
}

.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 28px;
  margin-bottom: 32px;
}

.article-post-title {
  font-size: 2.25rem;
  font-weight: 850;
  line-height: 1.32;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: -0.025em;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.meta-author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.meta-author-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, #22c55e, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.72rem;
  font-weight: bold;
}

/* Sidebar Table of Contents (Sticky) */
.article-toc-sidebar {
  position: sticky;
  top: 96px;
}

.toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
}

.toc-title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.toc-list li {
  line-height: 1.45;
}

.toc-list a {
  color: var(--text-secondary);
  display: block;
  padding: 4px 0 4px 10px;
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
}

.toc-list a:hover {
  color: var(--emerald-green);
  border-left-color: var(--emerald-green);
  transform: translateX(3px);
}

.toc-cta-mini {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px dashed var(--border-color);
  text-align: center;
}

.toc-cta-mini .btn {
  width: 100%;
}

/* Article Body Typography */
.article-body {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.82;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  scroll-margin-top: 90px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--emerald-green);
  border-radius: 2px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 28px 0 14px;
  scroll-margin-top: 90px;
}

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

.article-body ul, .article-body ol {
  padding-left: 24px;
  margin-bottom: 24px;
}

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

.article-body strong {
  color: var(--text-primary);
}

.article-body a {
  color: var(--emerald-green);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 550;
}

.article-body a:hover {
  filter: brightness(1.15);
}

/* Callouts & Key takeaways */
.article-callout {
  background: var(--bg-badge);
  border-left: 4px solid var(--emerald-green);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 28px 0;
  color: var(--text-primary);
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-highlight-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 28px 0;
}

/* Comparison Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.data-table th {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 14px 18px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: var(--bg-card-hover);
}

/* In-Article Optical CTA Slab */
.in-article-cta {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(59, 130, 246, 0.08) 100%);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  margin: 40px 0;
  text-align: center;
  box-shadow: 0 10px 30px -8px rgba(34, 197, 94, 0.15);
}

.in-article-cta h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.in-article-cta p {
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 22px;
  font-size: 0.96rem;
}

/* Article FAQ Section */
.article-faq-wrap {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.article-faq-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Related Reading Grid */
.related-section {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.related-section h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  border-color: var(--emerald-green);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.related-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.related-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 12px;
  flex-grow: 1;
}

.related-card .read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--emerald-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ================= Responsive Styles (@media) ================= */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-toc-sidebar {
    position: static;
    margin-bottom: 30px;
  }

  .hero-main-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-left-col {
    align-items: center;
  }

  .hero-orbital-wrapper {
    height: 300px;
  }

  .orbital-ring-container {
    width: 260px;
    height: 260px;
  }

  .features-grid,
  .pricing-grid,
  .reviews-grid,
  .insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: translateY(-6px);
  }

  .hero-monumental-headline {
    font-size: 2.9rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .header-actions .btn-header-cta {
    display: none;
  }

  .hero-section {
    padding: 40px 0 30px;
  }

  .hero-monumental-headline {
    font-size: 2.3rem;
  }

  .hero-brief-desc {
    font-size: 1.02rem;
  }

  .hero-bento-grid,
  .features-grid,
  .showcase-grid,
  .pricing-grid,
  .reviews-grid,
  .insights-grid,
  .sitemap-grid {
    grid-template-columns: 1fr;
  }

  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 55px 0;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .cta-banner {
    padding: 40px 20px;
  }

  .cta-banner h2 {
    font-size: 1.75rem;
  }

  .footer-nav {
    gap: 18px;
  }
}

@media (max-width: 480px) {
  .hero-monumental-headline {
    font-size: 1.95rem;
  }

  .hero-cta-pills {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-pills .btn {
    width: 100%;
  }

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

  .page-header-box,
  .content-card {
    padding: 24px 18px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
}

/* Accessible Screen Reader / SEO Semantic Only Helper */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}